JP2851608B2 - Pipe connector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe connector used to connect pipes constituting a temporary scaffold.

[0002]

2. Description of the Related Art Conventionally, a pipe connector 100 shown in FIG. 9 has been used as means for connecting pipes constituting a temporary scaffold.
The pipe connector 100 is formed by attaching columnar engaging portions 101 and 102 near both ends of a metal plate having a predetermined width, and then bending the plate into a V shape. To connect the pipes with the pipe connector 50, as shown in FIG. 10, the pipe connector 100 is inserted in advance into the joint 104 of one of the pipes 103, and the through holes 106 and 107 of the joint 104 are inserted. The locking portions 101 and 102 projecting from the through holes 106 and 10
7, the other pipe 108 is externally fitted to the joint portion 104 while the finger is pushed into the joint portion 104, and the locking portions 101 and 102 are inserted into the through holes 106 and 107 of the joint portion 104 and the other pipe 1
This is performed by inserting the through holes 110 and 111 into the through holes 08.

However, when the pipes are connected by the pipe connecting tool 100, the other pipes 108 are connected to the joints 104 while pushing the engaging portions 101, 102 protruding from the through holes 106, 107 of the joints 108 with fingers. There is a problem that the connecting operation is complicated since the pipes have to be externally fitted. Similarly, when the pipes are separated from each other, the through holes 103 and 104 of the other pipe 108 are used.
There is a problem that the work is complicated because the other pipe 108 has to be removed from the joint 104 while pushing the locking portions 101 and 102 protruding from the joint with the finger.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide a pipe connector which can easily connect or separate pipes. The pipe connector according to claim 1, wherein the pipe member is formed by bending a single plate material, and the plate material projects on both side portions near both ends of the band-shaped plate material in a width direction of the plate material. The overhanging portion is formed at the portion where the portions provided on the same side face each other, and the oblique side is formed so that the width of the overhanging portion increases toward the end portion. The plate is bent at the center in the longitudinal direction, the overhanging portion is bent outward, and the oblique side of the overhanging portion is positioned on the outer surface of the plate, and a pair is provided near each end of the plate. Inclination It is characterized by forming the engaging portion having a surface.

[0005] The pipe connector according to claim 2 is
A pipe connector formed by bending a single plate material, wherein the plate material is on both side portions near both end portions of the band-shaped plate material,
A protruding portion is formed in the width direction of the plate material, and the protruding portion is provided on the opposite side of a portion provided on the same side and opposite to each other, and the width of the protruding portion is directed toward the end. The oblique side is formed so as to decrease, and the plate material is bent at the central portion in the longitudinal direction, the overhanging portion is bent outward, and the oblique side of the overhanging portion is formed on the outer surface of the plate material. It is also possible to form a locking portion having a pair of inclined surfaces near both ends of the plate material.

According to a third aspect of the present invention, in the pipe coupler, the width of the central portion in the longitudinal direction of the plate is formed to be wider than the width of the plate to form the plate spring portion, and the plate spring portion is formed. A second protruding portion that protrudes in the width direction of the plate material is formed between the second protruding portion and the locking portion, and the second protruding portion is bent inward to form a reinforcing portion.

According to a fourth aspect of the present invention, there is provided a pipe connecting device according to the first, second, or third aspect of the present invention, in which a projecting portion constituting an engaging portion of the pipe connecting device is directed in a direction in which the projecting portion extends. Therefore, it is formed so that its width is increased, and the locking portion is formed with a slanted retaining upper end portion and an inclined retaining lower end portion, and the locking portion is formed in a state in which a pipe coupler is used. The plate material portion is bent inward in the vicinity of both ends of the plate material so that the plate material portion adheres to the inner surface of the joint portion of the pipe.

According to a fifth aspect of the present invention, there is provided a pipe connector for connecting ends of two pipes arranged in a straight line, wherein the pipe connector is a single band-shaped member made of an elastic member. The band-shaped member has a locking portion in the vicinity of both ends, and the locking portion comprises a pair of protruding portions that form a part of the band-shaped member and protrude from a long edge of the band-shaped member. The overhanging portion extends substantially vertically from the long edge of the band-shaped member, and extends substantially vertically from the long edge of the band-shaped member similarly to the first edge; A peripheral edge is formed by a second edge shorter than the first edge, and a third edge connecting the first edge and the tip of the second edge. Of the first edge and the first edge at each overhang. The first edge and the third edge are close to each other at the corner where the edge intersects with the other, and the other overhanging portion that forms a pair with the corner, and the band-shaped member has the one surface facing the outside. It is characterized by being bent into a U-shape or a V-shape.

According to a sixth aspect of the present invention, there is provided a pipe connector according to the fifth aspect, wherein the second edge of the pipe connector is connected to a long edge of the band-shaped member on the side opposite to the first edge. It is characterized by forming an acute angle between them.

[0010] According to a seventh aspect of the present invention, the first edge of the pipe connector according to the fifth or sixth aspect is as follows.
On the opposite side of the second edge, an acute angle is formed between the second edge and the long edge of the band-shaped member.

[0011] The pipe connector according to claim 8 may be a first edge of the pipe connector according to claim 5 or the second edge.
Is characterized in that at least one of the edges is formed in an arch shape toward the inside of the protruding portion.

[0012]

[Action]

(I) When connecting pipes When connecting pipes, a pipe connector is inserted into the joint of one pipe. The inserted pipe coupler is fixed to the inside of the joint by the urging force of the plate in a state in which the locking portion protrudes from the through hole of the joint. At this time, the pipe connector is connected to the oblique side of the locking portion (third side).
Is inserted into the joint portion such that the edge portion of the joint portion faces the connection-side end of the joint portion. Next, when the other pipe is externally fitted to the joint, the end of the other pipe comes into contact with the oblique side of the engaging portion of the pipe connector, and the engaging portion is pushed into the through hole of the joint. Subsequently, the other pipe is externally fitted to the joint portion, and when the through hole of the other pipe and the through hole of the joint portion communicate with each other, the locking portion is biased by the plate material to allow the other pipe to pass through the through hole of the other pipe. Project from the through hole of the pipe. In this way, one pipe and the other pipe are connected.

(Ii) Separating Pipes When separating pipes, when one of the pipes or the other pipe is twisted in one of the left and right directions, the edge of the through hole of the other pipe is engaged with the pipe connecting member. The stopper comes into contact with the inclined surface (projected portion) of the stopper, and the stopper is pushed into the through hole of the other pipe. When the through-hole of the other pipe and the through-hole of the joint are in a non-communication state, the one pipe and the other pipe are separated by removing the other pipe from the joint of the one pipe.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a pipe connector according to the present invention will be described below with reference to the accompanying drawings. The pipe connector 1 according to the first embodiment shown in FIG. 1 is used for connecting pipes constituting a temporary scaffold, and cuts a single steel plate having a spring property into a predetermined shape. After that, it is formed by bending. See Figure 2 for details.
As shown in the figure, the steel sheet is cut into a strip-shaped plate material 2,
A long edge 2a of the plate 2 is provided on both sides near the both ends.
Portions protruding from 2b, that is, portions 3, 4, 5, and 6 protruding in the width direction of the plate material 2 are formed.

The overhanging portion 3 has a first edge 3a extending vertically from the long edge 2a of the plate 2 and a vertical edge extending from the long edge 2a of the plate 2 similarly to the first edge 3a. A second edge 3b shorter than the first edge 3a and a hypotenuse (third edge) 7 connecting the ends of the first edge 3a and the second edge 3b are surrounded by a second edge 3b. An edge is formed. Similarly, each of the overhanging portions 4, 5 and 6 is
A first edge 4a, 5a and 6a and a second edge 4b, 5a
A peripheral edge is formed by b and 6b and the hypotenuses (third edge) 8, 9 and 10.

The plate member 2 is bent in a V-shape at a central portion in the longitudinal direction, and then the protruding portions 3, 4, 5, and 6 are bent.
Are bent toward the outer surface of the plate member 2 to form a corner 3c of the overhanging portion 3 and a corner 4c of the overhanging portion 4.
And the corner 5c of the overhanging portion 5 and the corner 6c of the overhanging portion 6 are similarly approached. In this manner, the locking portions 15 and 16 having the pair of inclined surfaces 11 and 12 and 13 and 14 are formed near both ends of the plate 2.

The upper and lower ends of the locking portion 15
Retaining upper end portion 18 composed of second edges 3b and 4b
, Lower end 1 comprising first edges 3a and 4a
9 are formed. Similarly, the retaining upper end 21 composed of the second edges 5b and 6b and the retaining lower end 22 composed of the first edges 5a and 6a are also provided at the upper end and the lower end of the locking portion 16. It is formed.

Next, a procedure for connecting pipes using the pipe connecting tool 1 will be described. As shown in FIG. 3, before connecting the pipes, the pipe connecting tool 1
One of the pipes 30 is inserted into a joint 31 attached to an end of the pipe 30. The pipe connector 1 is fixed in the joint part 31 by the urging force of the plate 2 with the locking parts 15 and 16 inserted into the pair of through holes 33 and 34 formed in the diameter direction of the joint part 30. Note that the pipe connector 1 is provided with oblique sides 7, 8, 9, and 10 of the locking portions 15, 16.
Is inserted into the joint portion 31 so as to face the end of the joint portion 31 (the side connecting the other pipe 36). In addition, from the through holes 33 and 34 of the joint portion 31, the oblique sides 7, 8, 9 and 10 of the locking portions 15 and 16,
Only a part of the retaining lower end portions 19 and 22 protrudes, and the retaining upper end portions 18 and 21 do not protrude. When the other pipe 36 is externally fitted to the joint portion 31, the retaining portions 15 and 16 are engaged. Can be pushed into the through holes 33 and 34 of the joint portion 31.

The other pipe 36 is connected to the joint 31.
Is fitted to the end, the end 37 of the other pipe 36 is connected to the oblique sides 7, 8, 9, and 10 of the locking portions 15, 16 of the pipe connector 1.
The engaging portions 15 and 16 are pushed into the through holes 33 and 34 of the joint portion 31. Subsequently, the other pipe 36 is externally fitted to the joint portion 31 until the distal end portion 37 of the other pipe 36 comes into contact with the distal end portion 38 of the one pipe 30.
0 and 41 communicate with the through holes 33 and 34 of the joint portion 31. When the through holes 33 and 40 and the through holes 34 and 41 communicate with each other in this manner, the through holes 3
The oblique sides 7, 8, 9, and 10 of the locking portions 15, 16 which have been pushed into the holes 3, 3, and a part of the lower end portions 19, 22 of the retaining holes are formed in the through holes of the other pipe 36 by the urging force of the plate material. 40 and 41 are inserted. Thus, one pipe 30 and the other pipe 36 are connected.

When the other pipe 36 is to be pulled out from the joint portion 31 in the state of being connected as described above, the retaining lower end portions 19 and 22 of the engaging portions 15 and 16 are prevented.
Cannot contact with the through holes 40 and 41 of the other pipe 36, respectively, and the stopper upper end portions 18 and 21 respectively contact the through holes 33 and 34 of the joint portion 31.

Next, the procedure for separating the pipes will be described. In order to separate one pipe 30 and the other pipe 36, one pipe 30 or the other pipe 36 is
The inclined surfaces 11 and 14 of the locking portions 15 and 16 located in the direction in which the edges of the through holes 40 and 41 of the other pipe 36 are twisted in one of right and left directions in a direction orthogonal to the connection direction.
Or contact 12 and 13. Thereby, the through hole 4
Since the edges of 0 and 41 pass over the inclined surfaces 11 and 14 or the upper portions of 12 and 13, respectively, the engaging portions 15 and 16 are pushed into the through holes 40 and 41 of the other pipe 36. In addition,
Each of the inclined surfaces 11, 12, 13, and 14 has a through hole 4
Since it is inclined toward the center of 0, 41,
The edges of 0, 41 are inclined surfaces 11, 12, 13, as described above.
14 can pass through.

Thus, when the through holes 40 and 41 of the other pipe 36 and the through holes 33 and 34 of the joint portion 31 are not in communication with each other, the other pipe 3
6 is pulled out from the joint part 31 and one pipe 30
And the other pipe 36 are separated. Also, when the pipes are separated from each other, the pipe connector 1 remains inserted into the joint portion 31, so that the pipe connector 1 is not lost.

In addition, the pipe connecting tool 1 uses the plate 2
Although it is formed by bending into a shape, the plate material 2 may be formed into any shape as long as it can provide an urging force, and for example, may be bent into a U shape or the like. Further, in the pipe connector 1, as described above, the width of the protruding portions 3, 4, 5, and 6 increases toward the end portion, but the second embodiment shown in FIG. Like the pipe connector 45 according to the embodiment, the oblique sides 7, 8, 9, and 10 are located on the end side of the plate member 2,
The width of the projecting portions 3, 4, 5, and 6 may be reduced toward the end.

Next, a pipe connector 50 according to a third embodiment will be described with reference to FIGS. The same components of the pipe connector 50 as those of the pipe connector 1 are denoted by the same reference numerals, and description thereof will be omitted. A leaf spring portion 51 is formed on the pipe connector 50 to increase the urging force. The leaf spring portion 51 is formed by changing the width 52 of the central portion in the longitudinal direction of the plate 2 to the width 53 of the plate 2.
5, the edges 51a and 51b of the leaf spring portion 51 are formed by curved lines, as shown in FIG.

The pipe connecting member 50 has second projecting portions 55, 5 projecting in a rectangular shape in the width direction of the plate member 2 between the leaf spring portion 51 and the locking portions 15, 16.
6, 57 and 58 are formed, and the second overhanging portions 55, 56, 57 and 58 are bent inward to form reinforcement portions 60 and 61.

Further, the locking portion 15 of the pipe connector 50,
The overhanging portions 3, 4, 5, and 6 that constitute 16 are formed so that their widths increase in the overhanging direction, and the width 62 of the hypotenuses 7, 8, 9, and 10 is the base end portion. 6
3 is wider than the width 64. In this way, the first edges 3a, 4a, 5a and 6a and the long edges 2a
Or 2b, and the angle 66 formed by the second edges 3b, 4b, 5b and 6b and the long edge 2a or 2b are formed at acute angles.
Retaining upper ends 18, 21 and retaining lower ends 19, 22
Are inclined toward the base end 63.

The pipe connecting member 50 is connected to the second edge 3.
b and 4b are bent inward at a predetermined angle at a portion 78 of the plate 2 where the second edge portions 5b and 6b are formed and a portion 79 of the plate 2 where the second edges 5b and 6b are formed. Plate portions 80, 8 on which the locking portions 15, 16 are formed
1 is in close contact with the joint portion 31 of the pipe 30.

The pipe connector 50 is used in the same manner as the pipe connector 1 as shown in FIG. 7, but compared with the pipe connector 1 because the leaf spring portion 51 is formed as described above. And the reinforcing force is increased
0, 61 are formed, so that the leaf spring portion 51 and the locking portion 1
The bending strength of the plate material 2 between 5 and 16 is improved. Therefore, the pipe connector 50 can firmly connect the pipes 30 and 36.

Further, as described above, the locking portions 15, 1
The plate material portions 80 and 81 where the 6 is formed are in close contact with the joint portion 31 of the pipe 30, and the retaining upper end portions 18 and 21 and the retaining lower end portions 19 and 22 of the locking portions 15 and 16 are connected to the base end portion 63. The other pipe 3
6 is attempted to be pulled out of the joint portion 31 without twisting, the retaining upper end portions 18 and 21 of the locking portions 15 and 16 are removed.
Are provided in the through holes 33 and 34 of the joint portion 31, and the retaining lower end portions 19 and 22 are provided in the through holes 40 and 4 of the other pipe 36.
1 and the locking portions 15 and 16 are pulled out from the through holes 40 and 41 of the other pipe 36 (arrow 9).
(0, 91 directions) is applied, so that the pipes 30 and 36 are more reliably prevented from separating.

The first edges 3a, 4a, 5a and 6
The above effect can also be obtained by forming at least one of the second edge portions 3a, 2b, 4b, 5b and 6b in an arch shape (see FIG. 8). Further, the material of the pipe couplers 1, 45 and 50 is not limited to a steel plate requiring rust prevention treatment, but may be a stainless steel plate or the like which does not require rust prevention treatment. Further, the pipe couplers 1, 45 and 50 may be integrally formed of a resin material such as engineering plastic.

[0031]

As is apparent from the above description, in the pipe connector according to the present invention, the pipe connector is inserted into the joint of one pipe in advance, so that the joint of one pipe is inserted into the joint of the other pipe. The pipes can be connected only by fitting the pipes outside. Also, if one of the connected pipes is twisted in one direction, left or right,
One pipe and the other pipe can be separated.
As described above, by using the pipe connecting device according to the present invention, the work of connecting or separating pipes can be performed very easily, so that the workability when assembling or disassembling the temporary scaffold can be improved. Can be.

Further, since the pipe connector according to the present invention is formed by bending a single plate material processed into a predetermined shape, it can be manufactured at low cost.

Further, since the pipe connecting member having the plate spring portion and the reinforcing portion formed therein has an improved urging force and the bending strength of the plate material between the plate spring portion and the locking portion, one of the pipes is provided. And the other pipe can be firmly connected.

Further, the locking portion is formed with an inclined retaining upper end portion and an inclined retaining lower end portion, and in a state where the pipe connecting member is used, the plate material portion on which the locking portion is formed is formed of a pipe. In the case of a pipe connector in which the vicinity of both ends of the plate is bent inward so as to be in intimate contact with the inner surface of the joint portion, when the other pipe to be fitted is to be pulled out without twisting, the plate is formed with a locking portion The part is in close contact with the inner surface of the joint part of the pipe, and the retaining upper end and the retaining lower end of the locking part abut the through hole of the joint part and the through hole of the pipe fitted externally, respectively. In addition, since a force is applied to the locking portion in a direction of being pulled out from the through hole of the pipe to be externally fitted, separation of one pipe and the other pipe is reliably prevented.

[Brief description of the drawings]

FIG. 1 is a perspective view of a pipe connector according to a first embodiment.

FIG. 2 is an exploded view of the pipe coupler according to the first embodiment.

FIG. 3 is an explanatory diagram illustrating a use state of the pipe coupler according to the first embodiment.

FIG. 4 is an explanatory diagram showing a use state of another pipe connector according to the second embodiment.

FIG. 5 is a perspective view of a pipe connector according to a third embodiment.

FIG. 6 is a development view of a pipe coupler according to a third embodiment.

FIG. 7 is an explanatory diagram showing a use state of a pipe connector according to a third embodiment.

FIG. 8 is a partially enlarged view showing a modification of the locking portion of the pipe coupler according to the third embodiment.

FIG. 9 is a perspective view of a conventional pipe connector.

FIG. 10 is an explanatory view showing a use state of a conventional pipe connector.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Pipe connection tool, 2 ... Plate material, 3-6 ... Overhanging part, 7-10 ... Oblique side, 11-14 ... Slope, 30 ... One pipe, 31 ... Joint part, 36 ... The other pipe.

Claims (8)

(57) [Claims] 1. A pipe connector formed by bending a single plate material, wherein the plate material has portions protruding in the width direction of the plate material formed on both side portions near both ends of the band-shaped plate material, The overhanging portion has a hypotenuse formed at a portion where the members provided on the same side face each other so that the width of the overhanging portion increases toward the end portion. While bending at the part,
The overhanging portion was bent outward, the oblique side of the overhanging portion was positioned on the outer surface of the plate, and a locking portion having a pair of inclined surfaces near both ends of the plate was formed. A pipe connector characterized by the above-mentioned. 2. A pipe connector formed by bending a single plate material, wherein the plate material has portions protruding in the width direction of the plate material formed on both side portions near both ends of the band-shaped plate material, The projecting portion has a hypotenuse formed at a portion opposite to a portion provided on the same side so that the width of the projecting portion decreases toward the end. While bending the plate at the center in the longitudinal direction,
The overhanging portion was bent outward, the oblique side of the overhanging portion was positioned on the outer surface of the plate, and a locking portion having a pair of inclined surfaces near both ends of the plate was formed. A pipe connector characterized by the above-mentioned. 3. The width of a central portion in the longitudinal direction of the plate material is
Forming a leaf spring portion wider than the width of the plate material to form a leaf spring portion, and forming a second projecting portion projecting in the width direction of the plate material between the leaf spring portion and the locking portion, 3. The pipe connector according to claim 1, wherein the second protruding portion is bent inward to form a reinforcing portion. 4. An overhanging portion forming the locking portion is formed so that its width increases as it goes in the direction in which the locking portion protrudes. While forming the lower end with the stopper, and using the pipe connector, bend the vicinity of both ends of the plate inward so that the plate portion where the locking portion is formed is in close contact with the inner surface of the joint portion of the pipe. The pipe connector according to claim 1, 2 or 3, wherein: 5. A pipe connector for connecting the ends of two pipes arranged on a straight line, wherein said pipe connector comprises a single band-shaped member made of an elastic member, and said band-shaped member comprises both end portions. Each has a locking portion in the vicinity, the locking portion comprises a pair of overhanging portions that form a part of the band-shaped member and protrude from a long edge of the band-shaped member, and the overhanging portion is a portion of the band-shaped member. A first edge extending substantially perpendicularly from the long edge, and a second edge extending substantially vertically from the long edge of the strip like the first edge and shorter than the first edge; And a third edge connecting the tips of the first edge and the second edge to form a peripheral edge, and the overhanging portions are each bent toward one surface of the band-shaped member. A corner where the first edge and the third edge intersect at each overhanging portion; The first edge portion and the third edge portion are close to each other at the other protruding portion forming a pair, and the band-shaped member is bent into a U shape or a V shape so that the one surface is outside. Is a pipe connector. 6. The pipe connector according to claim 5, wherein the second edge forms an acute angle with a long edge of the band-shaped member on a side opposite to the first edge. 7. The pipe connection according to claim 5, wherein the first edge forms an acute angle with a long edge of the band-shaped member on a side opposite to the second edge. Utensils. 8. The method according to claim 5, wherein at least one of the first edge and the second edge is formed in an arch shape toward the inside of the protruding portion. The pipe coupler as described.