JP3872328B2 - Branch mounting fastener - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a branch pipe mounting fastener capable of suitably temporarily fixing the branch pipe to the main pipe when the branch pipe is bonded and attached to the main pipe of the water pipe, particularly a sewer pipe, and the same. It relates to the temporary fixing method used.
[0002]
[Related technologies]
In order to connect each household and the main water supply pipe (distribution pipe or sewer pipe, etc.), a branch pipe for connecting each household and the main pipe is attached to the main pipe. This is done via a branch pipe.
[0003]
Conventionally, as a method of attaching such a branch pipe to the main pipe, the main pipe having an insertion hole with a hole is applied to the main pipe by applying an adhesive to the collar of the branch pipe having a collar. The method of adhering to is performed.
[0004]
By the way, in the operation of bonding the above-mentioned branch pipe to the main pipe, it is necessary to perform so-called temporary fixing until the adhesive is cured. As a temporary fixing method, for example, a temporary fixing method using a wire or the like is used. Known (FIG. 4).
[0005]
However, since the above-mentioned main pipe is buried in the ground, when performing such a temporary fixing method using a wire or the like, it is necessary to dig up the entire surrounding area around the branch pipe mounting position of the main pipe. The construction could not be carried out and it was very troublesome.
[0006]
Further, if the entire surrounding area is dug up for each main pipe around the branch pipe mounting position of the main pipe as described above, it takes a lot of work and as a result, the construction period is extended. Along with this, construction costs will increase.
[0007]
In view of the recent automobile society, waterworks have a serious impact on traffic congestion on roads. The longer the waterworks work, the worse the level of traffic congestion. Therefore, it was a social urgent task to shorten the construction period by performing construction as quickly as possible.
[0008]
In addition, the extension of the construction period is not economically preferable, and it is possible to temporarily fix the branch pipe to the main pipe quickly and at low cost in the operation of bonding the branch pipe to the main pipe in waterworks, particularly sewerage work. Jigs and construction methods have long been desired.
[0009]
[Problems to be solved by the invention]
The present invention has been made in view of the above-described conventional problems. When a branch pipe is bonded and attached to a main pipe of a water pipe, particularly a sewer pipe, the branch pipe is simply temporarily fixed to the main pipe. It is an object of the present invention to provide a branch pipe mounting fastener that can be used.
[0010]
[Means for Solving the Problems]
In order to solve the above-described problems, a branch pipe mounting fastener according to the present invention is provided in a branch pipe body having an internal through-hole communicating with a front end opening and a rear end opening, and in the periphery of the front end opening. A branch pipe mounting fastener used when a branch pipe having a curved flange is attached to a branch pipe mounting hole of a main pipe, and (a) a lower end portion of an upper screw rod and an upper end portion of a lower support rod are connected to the upper portion A long rod connected via joint means that does not transmit the rotational movement of the screw rod; (b) a tightening member that is screwably attached to the upper screw rod; and (c) a lower end portion of the lower support rod. a locking member pivotally mounted to, Tona is, the locking member is pivotable in a vertical mounting portion of the lower end of the lower support rod as a fulcrum, and the one end portion There is a weight difference in the longitudinal direction so that it always inclines downward Characterized in that that.
[0011]
Further, the locking member can be turned up and down with the attachment portion at the lower end of the lower support rod as a fulcrum, and a weight difference is provided in the longitudinal direction so that one end always inclines downward. More preferably.
[0012]
More preferably, a plurality of fitting step portions having different diameters corresponding to the diameter of the rear end opening of the branch pipe are provided on the lower surface of the tightening member, corresponding to the branch pipe mounting holes of various diameters. It can be so. If comprised in this way, it will become possible to respond | correspond to all kinds of pipes if there is one said clamping tool for branch pipe attachment, and work efficiency will improve very much and it is economical.
[0013]
Tacking method that uses the branch pipe mounting fasteners of the present invention described above, an adhesive is applied to the lower surface of the flange portion of (a) the branch pipe and said branch pipe mounting hole (b) and the tip opening (C) The locking member is inserted into the main pipe through the rear end opening, the front end opening, and the branch pipe mounting hole. (D) the fastening member is screwed down along the upper screw rod to bring the fastening member into contact with the rear end opening edge of the branch pipe, and the locking member is attached to the peripheral edge of the mounting hole inside the main pipe. (E) Finally, the upper screw rod is rotated, and (f) the fastening member and the locking member are brought close to each other to attach the rear end opening edge of the branch pipe and the inside of the main pipe. By tightening the branch pipe and the main pipe via the peripheral edge of the hole, the hook and the book contacting the hook And an outer peripheral surface brought into firm contact, Ru der which the branch pipe and adapted to temporarily fixed to the main pipe.
[0014]
Note that after the temporary fixing method described above is performed, the adhesive is cured by leaving it for a predetermined time.
[0015]
If the above-described temporary fixing method is performed using the branch pipe mounting fastener configured as described above, the fastening member and the locking member are brought close to each other, and the rear end opening edge of the branch pipe and the main pipe Since the branch pipe and the main pipe can be tightened via the peripheral edge of the mounting hole inside the pipe, the flange of the branch pipe and the outer peripheral surface of the main pipe in contact with the flange are firmly brought into contact with each other. Therefore, the branch pipe can be easily temporarily fixed.
[0016]
Further, if the locking member rotatably attached to the lower end portion of the lower support rod is configured such that one end portion always inclines downward, the locking member is moved to the rear end opening portion. It becomes easy to insert into the main pipe through the tip opening and the branch pipe mounting hole.
[0017]
Therefore, the locking member can be turned up and down with the mounting portion at the lower end of the lower support rod as a fulcrum, and is provided with a weight difference in the longitudinal direction so that one end is always inclined downward. It is more preferable. As a means for providing a weight difference, for example, a configuration in which a notch is provided at one end of the locking member and the one end is lighter than the other end, or one of the locking members is provided. Examples include a configuration in which a heavy stone is provided at the end, and the one end is heavier than the other end. In the embodiments of the present invention to be described later, an example in which the former means is used has been shown.
[0018]
In addition, when the branch pipe is bonded to the main pipe, the adhesive applied to the lower surface of the buttock of the branch pipe is cured by performing the above-described temporary fixing method using the branch pipe mounting fastener described above. If temporary fixing is performed until then, it is not necessary to dig up the entire surrounding area around the branch pipe mounting position of the main pipe, which leads to a significant shortening of the construction period and reduction of construction costs.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below in detail with reference to the accompanying drawings, but it goes without saying that various modifications or changes other than the illustrated examples are possible without departing from the technical idea of the present invention. .
[0020]
FIG. 1 is a schematic partial cross-sectional front view showing an embodiment of a branch pipe mounting fastener of the present invention, and FIG. 2 is a temporary fixing of the branch pipe using the branch pipe mounting fastener of the present invention. FIG. 3 is a schematic front view showing one embodiment, FIG. 3 is a cross-sectional view taken along the line III-III of FIG. 2, and FIG. 4 is a schematic perspective explanatory view showing a conventional temporary fixing method for a branch pipe.
[0021]
In FIG. 1, a branch tube mounting fastener 10 according to the present invention connects a lower end portion of an upper screw rod 12 and an upper end portion of a lower support rod 14 through joint means 16 that does not transmit the rotational motion of the upper screw rod 12. A long rod 18, a tightening member 20 that is rotatably attached to the upper screw rod 12, and a locking member 22 that is rotatably attached to the lower end portion of the lower support rod 14. ing. In the illustrated example, the joint means 16 includes an annular joint member cover 62 and an annular joint member 64.
[0022]
Further, the locking member 22 is provided with a notch 24, and can be turned up and down with the mounting portion 74 at the lower end of the lower support rod 14 as a fulcrum, and one end is always inclined downward. Thus, since the weight difference is provided in the longitudinal direction, the main pipe 26 can be easily inserted into the interior 44. Further, in the illustrated example, the upper screw rod 12 is provided with a handle 28 for rotating the upper screw rod 12.
[0023]
Then, the branch pipe 30 having a branch pipe body 70 having an internal through hole 68 that communicates the front end opening 36 and the rear end opening 42, and a curved flange 32 provided at the periphery of the front end opening 36. Adhesive 34 is applied to the lower surface of the flange 32, and the flange 32 of the branch pipe 30 is placed on the outer peripheral surface 40 of the main pipe 26 so that the tip opening 36 of the branch 30 and the branch mounting hole 38 coincide. The locking member 22 is inserted into the inside 44 of the main pipe 26 through the rear end opening 42, the front end opening 36 and the branch pipe mounting hole 38 of the branch pipe 30.
[0024]
In addition, the lower surface 72 of the fastening member 20 is provided with a plurality of fitting step portions 46 a and 46 b having different diameters corresponding to the diameter of the rear end opening 42. If constituted in this way, it becomes possible to cope with various tube types, and the working efficiency becomes very good and economical. In the illustrated example, an example in which the two fitting step portions 46a and 46b are provided is shown, but a configuration in which more fitting step portions are provided may be employed. Moreover, it can also be set as the structure which does not provide this fitting step part 46a, 46b.
[0025]
Further, the locking member 22 having the above-described notch portion 24 may be configured to be rotatably attached to the lower end portion of the lower support rod 14. In the illustrated example, an example in which the bolt 50 and the nut 52 are rotatably attached to the lower end portion of the lower support rod 14 is shown.
[0026]
Then, as indicated by phantom lines in FIG. 1, the locking member 22 is arranged in parallel with the main pipe 26 inside the main pipe 44.
[0027]
Next, the fastening member 20 is screwed down along the upper screw rod 12 to bring the fastening member 20 into contact with the rear end opening edge 54 of the rear end opening 42 of the branch pipe 30 and the engagement. The locking member 22 is locked to the mounting hole peripheral portion 56 of the branch pipe mounting hole 38 in the main pipe interior 44, and finally the upper screw rod 12 is rotated to bring the fastening member 20 and the locking member 22 close to each other. By tightening the branch pipe 30 and the main pipe 26 via the rear end opening edge 54 of the branch pipe 30 and the mounting hole peripheral part 56 of the main pipe interior 44, the flange 32 and the flange 32 of the branch pipe 30 are As shown in FIG. 2, the branch pipe 30 is temporarily fixed to the main pipe 26 by bringing the main pipe outer peripheral surface 40 into contact therewith firmly.
[0028]
If the adhesive 34 is cured for a predetermined period of time after being temporarily fixed in this manner, the adhesive 34 is cured, thereby realizing strong adhesion between the branch pipe 30 and the main pipe 26.
[0029]
3 is a cross-sectional view taken along the line III-III in FIG. 2, but the upper screw rod 12, the lower support rod 14, the screw member 58, the bolt 50, and the nut 52 are not shown in cross section. As shown well in the figure, the fastening member 20 screwed down along the upper screw rod 12 and brought into contact with the rear end opening edge 54 of the rear end opening 42 of the branch pipe 30 and the inside of the main pipe The locking member 22 locked to the mounting hole peripheral portion 56 of the branch pipe mounting hole 44 is brought closer to each other by finally rotating the upper screw rod 12, and the rear end opening of the branch pipe 30 is opened. By tightening the branch pipe 30 and the main pipe 26 via the edge portion 54 and the peripheral edge portion 56 of the main hole 44 in the main pipe 44, the flange portion 32 of the branch pipe 30 and the main pipe outer peripheral surface 40 in contact with the flange portion 32 Are in strong contact.
[0030]
As well shown in FIG. 3, the lower end portion of the upper screw rod 12 and the upper end portion of the lower support rod 14 are constituted by joint means 16 so as not to transmit the rotational motion of the upper screw rod 12.
[0031]
Therefore, as described above, even if the upper screw rod 12 is rotated, the rotational motion of the upper screw rod 12 is not transmitted to the lower support rod 14. With this configuration, the rotational movement of the upper screw rod 12 causes the tightening member 20 and the main pipe interior 44 that are brought into contact with the rear end opening edge 54 of the rear end opening 42 of the branch pipe 30 to each other. The movement is made into a movement in which the locking member 22 locked to the mounting hole peripheral portion 56 of the branch pipe mounting hole 38 is brought close to each other, and the rear end opening edge 54 of the branch pipe 30 and the main pipe interior 44 are mounted. By tightening the branch pipe 30 and the main pipe 26 via the hole peripheral part 56, the flange part 32 of the branch pipe 30 and the main pipe outer peripheral surface 40 contacting the flange part 32 are brought into firm contact.
[0032]
The joint means 16 may be configured not to transmit the rotational motion of the upper screw rod 12 between the lower end portion of the upper screw rod 12 and the upper end portion of the lower support rod 14. In the illustrated example, the joint means 16 is configured by screwing the annular joint member cover 62 and the annular joint member 64 with the screw member 58. Therefore, in the figure, even if the upper screw rod 12 is rotated, the rotational motion is not transmitted to the lower support rod 14, so that the upper screw rod 12 only rotates and the lower support rod 14 does not rotate.
[0033]
【The invention's effect】
As described above, according to the present invention, it is possible to temporarily fix the branch pipe to the main pipe quickly and at a low cost in the work of adhering the branch pipe to the main pipe in waterworks, particularly sewerage work, and extremely easily and temporarily. The outstanding effect that it can stop can be show | played.
[Brief description of the drawings]
FIG. 1 is a schematic partial cross-sectional front view showing one embodiment of a branch pipe mounting fastener of the present invention.
FIG. 2 is a schematic front view showing one embodiment in which a branch pipe is temporarily fixed using the branch pipe mounting fastener of the present invention.
3 is a cross-sectional view taken along line III-III in FIG.
FIG. 4 is a schematic perspective view showing a conventional temporary fixing method for a branch pipe.
[Explanation of symbols]
10: Branch pipe mounting fastener, 12: Upper screw rod, 14: Lower support rod, 16: Joint means, 18: Long rod, 20: Fastening member, 22: Locking member, 24: Notch, 26 : Main pipe, 28: Handle, 30: Branch pipe, 32: Curved collar part, 34: Adhesive, 36: Tip opening, 38: Branch pipe mounting hole, 40: Main pipe outer peripheral surface, 42: Rear end opening, 44: main pipe interior, 46a, 46b: fitting step, 50: bolt, 52: nut, 54: rear end opening edge, 56: peripheral edge of mounting hole, 58: screw member, 62: annular joint member cover, 64: annular joint member, 66: wire, 68: internal through hole, 70: branch pipe body, 72: lower surface, 74: mounting portion.

Claims (2)

When attaching a branch pipe having an internal through hole communicating with the front end opening and the rear end opening and a curved flange provided around the front end opening to the main pipe branch mounting hole. A branch pipe mounting fastener to be used, comprising: (a) a long rod in which a lower end portion of an upper screw rod and an upper end portion of a lower support rod are connected via joint means that does not transmit the rotational motion of the upper screw rod If, (b) said upper threaded rod to threadedly attached freely mounted clamping member, Ri Do and a locking member pivotally mounted to the lower end of (c) said lower support rod, the locking The member is rotatable up and down with the attachment portion at the lower end of the lower support rod as a fulcrum, and a weight difference is provided in the longitudinal direction so that one end always inclines downward. A branch mounting fastener.   2. The branch pipe mounting fastener according to claim 1, wherein a plurality of fitting step portions having different diameters corresponding to the diameter of the rear end opening are provided on the lower surface of the fastening member. .

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