JP3225284U - Pipe clamp - Google Patents

Abstract

An object of the present invention is to provide a pipe clamp used for assembling a temporary work scaffold at a construction site.
In a pipe clamp including a receiving member, a holding member, and bolts and nuts for fastening, a bottom plate in a wide region of the receiving member and left and right side plate portions on both sides thereof. The groove between the outer surface of the bottom plate portion 9 and the outer surfaces of the left and right side plate portions 10a and 10b is formed integrally at the corner between them, and between the wide region and the fastening bolt shaft support portion 13. The bent side plates 16, 17 of the left and right side plate portions 10a, 10b formed between the wide region portion and the holding member shaft support portion 14 and the concave groove portion 18 are, in side view, a bottom plate portion of a flat region portion. 9 are not inclined at right angles, but are all inclined at the same angle in the direction approaching the side where the fastening bolt shaft support 13 is located as the distance from the bottom plate 9 increases.
[Selection diagram] Fig. 1

Description

  The present invention relates to a pipe clamp used for assembling a temporary work scaffold at a construction site.

  As shown in Patent Document 1, this type of pipe clamp is provided with a receiving member, a holding member that is pivotally supported at one end of the receiving member so as to be openable and closable, and a pivotally supported pivotally at the other end of the receiving member. A fastening bolt, comprising a fastening nut screwed into the fastening bolt, and tightening the fastening nut in a state where the fastening bolt is fitted into a recess provided at the free end of the holding member. By pressing the pressing member toward the receiving member side, the steel pipe sandwiched between the two can be clamped and fixed, and generally, the same two pipe clamps are used. The steel pipes to be clamped and fixed can be connected and integrated with the receiving members back to back in a direction orthogonal to each other, or, as described in Patent Document 1, the steel pipes to be clamped and fixed can be connected at an arbitrary angle. Sea urchin, are used in the same state of being relatively rotatably connected by a shaft in which two of the pipe clamp receiving member to each other to a center of rotation at a back-to-back state.

JP 2014-201774 A

  In the pipe clamp as described above, the receiving member and the pressing member are integrally formed into a U-shaped cross section with the inside opened by pressing a metal plate. In spite of trying to reduce the cost, the left and right side plates in the U-shaped cross-section structure were buckled and deformed by the reaction force tightened from the steel pipe, and this was not realized in practical use.

The present invention proposes a pipe clamp that can solve the conventional problems as described above, and the pipe clamp according to the present invention is intended to make it easier to understand the relationship with the embodiment described later. When the reference numerals used in the description of the embodiment are attached in parentheses and shown, a receiving member (2), a pressing member (4) pivotally supported at one end of the receiving member (2) so as to be openable and closable, The holding member (4) is composed of a fastening bolt (6) rotatably supported at the other end of the receiving member (2) and a fastening nut (7) screwed into the fastening bolt (6). ) By tightening the fastening nut (7) in a state where the fastening bolt (6) is fitted in the notch recess (8) provided at the free end of the holding member (4). It is configured such that the steel pipe (Pa) sandwiched between these can be clamped and fixed by pressing toward the receiving member (2) side, and the receiving member (2) is The bottom plate portion (9) and the left and right side plate portions (10a, 10b) integrally bent and provided inward from both left and right sides of the bottom plate portion (9) are formed in a U-shaped cross section, A flat region (11) on the side supporting the fastening bolt (6) and an oblique rising region (12) on the side supporting the pressing member (4) are formed in a bent shape in side view. At the free end of the flat region portion (11) of the receiving member (2), a fastening bolt shaft support portion (13) in which the interval between the left and right side plate portions (10a, 10b) is reduced is formed, and At the free end of the oblique rising region (12), a holding member shaft support (14) in which the distance between the left and right side plate portions (10a, 10b) is narrowed is formed, and the fastening bolt shaft support (13) and the holding member shaft are formed. In the pipe clamp in which the wide area portion (15) is formed between the support and the support (14),
At the corner between the bottom plate portion (9) and the left and right side plate portions (10a, 10b) on both sides of the wide area portion (15), the outer surface of the bottom plate portion (9) and the left and right side plate portions (10a, A concave groove (18) for connecting the outer surface of 10b) diagonally is integrally molded, and is formed between the wide area (15) and the fastening bolt shaft support (13) and the wide area (15). The bent side plate portions (16, 17) of the left and right side plate portions (10a, 10b) formed between the holding member shaft support portion (14), and the concave groove portion (18) are the flat regions in a side view. Not in a direction perpendicular to the bottom plate (9) of the portion (15), but inclining by the same angle in a direction approaching the side where the fastening bolt shaft support (13) is located, as the distance from the bottom plate (9) increases. It is configured to be oriented in different directions.

  In this type of pipe clamp, in order to stably hold and fix the steel pipe, it is necessary to increase the interval between the left and right side plate portions of the receiving member and to increase the length of the inner edge of the left and right side plate portion contacting the steel pipe. desired. According to this configuration, the area of the flat bottom plate portion of the receiving member is increased, and there is also obtained an advantage that it is easy to adopt various connecting structures when connecting and integrating the pipe clamps back to back. At both ends of the receiving member, a fastening bolt supporting portion and a holding member supporting portion in which the interval between the left and right side plate portions is narrowed must be formed. The bent side plate must be formed at the bottom. Unlike the bent side plate portion close to the fastening bolt shaft support portion, the bent side plate portion close to the holding member shaft support portion must be formed on the left and right side plate portions in the diagonally rising region that rises diagonally outward. Therefore, if the bent side plate portion is formed to be perpendicular to the bottom plate portion at that position, the bent side plate portion near the holding member shaft support portion and the bent side plate portion near the fastening bolt shaft support portion are not parallel to each other. This causes a problem in press molding of the receiving member.

  However, according to the configuration of the present invention described above, the left and right side plate portions of the receiving member are sufficiently connected to the front and rear two bent side plate portions with the fastening bolt shaft support portion and the holding member shaft support portion in order to obtain the above-described effect. Even if the distance between the two bent side plates is increased to the maximum in the front-rear direction (direction along the left and right side plate portions), the presence of the groove located in the middle between the two bent side plate portions allows the left and right side plates with respect to the bottom plate portion. The bending (self-standing) strength of the part is increased, and there is no danger that the left and right side plates between the two front and rear bent side plates will buckle and deform against the bottom plate due to the reaction force tightened from the steel pipe. Can be used as a high pipe clamp. In addition, since the two bent side plate portions and the concave groove portions formed on the left and right side plate portions are all inclined at the same angle in the same direction, the receiving member can be easily and easily formed by one press working. I can do it. Further, since the inclination directions of the two bent side plate portions and the concave groove portions formed on each of the left and right side plate portions are such that the more the distance from the bottom plate portion to the upper side, the more the side is inclined to the side where the fastening bolt shaft support portion is located, the holding member is provided. The bent side plate portion closer to the shaft support portion can also be formed without difficulty between the bottom plate portion and the inner edges of the left and right side plate portions in the oblique rising region. Since the above-described effects can be expected, according to the configuration of the present invention, it is possible to reduce the thickness of the metal plate on which the receiving member is formed, and it is possible to reduce the weight and cost.

FIG. 1 is a front view showing the first embodiment. FIG. 2 is a right side view of the embodiment. FIG. 3 is a plan view of the embodiment. FIG. 4 is a longitudinal sectional side view showing a receiving member of one pipe clamp. FIG. 5 is a bottom view of the receiving member. FIG. 6 is a view of the receiving member as viewed from the direction indicated by the arrow A in FIG. 4. FIG. 7 is a sectional view of the receiving member taken along line XX in FIG. 4. FIG. 8 is a right side view of the receiving member. FIG. 9 is a left side view of the receiving member. FIG. 10 is a right side view showing the second embodiment.

  Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. 1 to 9. In this embodiment, two pipe clamps 1 </ b> A and 1 </ b> B are arranged so that steel pipes Pa and Pb which are respectively clamped and fixed are perpendicular to each other. It is connected and integrated as it is. Since the two pipe clamps 1A and 1B have exactly the same structure, the structure and operation will be described below using the pipe clamp 1A on one side as an example.

  The pipe clamp 1A includes a receiving member 2, a holding member 4 pivotally supported at one end of the receiving member 2 by a supporting shaft 3 so as to be freely opened and closed, and a supporting shaft in a direction parallel to the supporting shaft 3 at the other end of the receiving member 2. 5, a fastening nut 6 screwed to the fastening bolt 6 and supported on the free end of the holding member 6. The fastening bolt is provided in a cutout recess 8 provided at the free end of the holding member 4. By tightening the fastening nut 7 in a state in which the steel pipe 6 is fitted, the pressing member 4 is pressed against the receiving member 2 side, so that the steel pipe Pa sandwiched therebetween can be clamped and fixed. .

  As shown in FIGS. 4 to 9, the receiving member 2 has a cross section formed by a bottom plate 9 and left and right side plates 10 a and 10 b which are integrally bent from the left and right sides to the inside. And a flat region 11 on the side supporting the fastening bolt 6 and an oblique rising region 12 on the side supporting the holding member 4 are formed in a bent shape in a side view. At the free end of the flat region portion 11 of the receiving member 2, a fastening bolt shaft support portion 13 in which the interval between the left and right side plate portions 10a and 10b is narrow is formed, and at the free end of the oblique rising region portion 12, both right and left sides are formed. A holding member shaft support portion 14 in which the interval between the plate portions 10a and 10b is narrow is formed, and a wide area portion 15 is formed between the fastening bolt shaft support portion 13 and the holding member shaft support portion 14. The inner edge 2a between the fastening bolt shaft support 13 and the pressing member shaft support 14 of the left and right side plate portions 10a, 10b of the receiving member 2 is formed in an arc shape along the outer peripheral surface of the steel pipe Pa to be clamped. I have.

  The space between the left and right side plates 10a and 10b is fastened between the wide area 15 of the receiving member 2 and the bolt supporting portion 13 for fastening and between the wide area 15 and the supporting portion 14 of the pressing member. The left and right side plate portions 10a, 10b are formed with bent side plate portions 16, 17 in order to change the side of the bolt support portion 13 and the holding member support portion 14 so as to be narrower. Has a concave groove portion 18 formed therein. The concave groove portion 18 is formed at the corner between the bottom plate portion 9 and the left and right side plate portions 10a and 10b on both sides of the wide region portion 15 at the outer surface of the bottom plate portion 9 and the outer surface of the left and right side plate portions 10a and 10b. And are integrally molded to connect diagonally. As shown in FIG. 4, the center lines 16a, 17a, and 18a of the flat region portion 11 with respect to the bottom plate portion 9 are aligned with the flat region portion 11 in a side view. It is formed so as to be inclined not at a right angle to the bottom plate portion 9 but at the same angle in a direction approaching the side where the fastening bolt shaft support portion 13 is located, as the distance from the bottom plate portion 9 increases. . The width of the bent side plate portions 16 and 17 is constant in the length direction, but the concave groove portion 18 has a mountain shape in a side view in which the width becomes wider toward the bottom plate portion 15 side.

  As shown in FIGS. 1 to 3, the pressing member 4 includes a top plate 19 and right and left side plate portions 20 a and 20 b that are bent inward from both left and right sides of the top plate 19. It is formed in a U-shape, and its one end base 4a is openably and closably supported by the support shaft 3 in a state fitted between the left and right side plate portions 10a and 10b of the holding member support 14 of the receiving member 2. Have been. At the free end of the holding member 4, a bent free end 4 b that is bent obliquely upward is provided, the notch recess 8 is provided from the tip of the top plate 19 at the bent free end 4 b, and the receiving member 2 is provided. The fastening bolt 6 pivotally supported on the side is raised and fitted into the notch recess 8 in the bending free end 4b of the holding member 4, and the fastening nut 7 is fitted to the bending free end 4b of the holding member 4. Is pressed down, and the pressing member 4 is pressed toward the receiving member 2 side, whereby the steel pipe Pa sandwiched between the receiving member 2 and the pressing member 4 can be pinched and fixed. Therefore, the inner edges 4c of the left and right side plate portions 20a and 20b between the one end base portion 4a and the bent play end portion 4b of the holding member 4 are formed in an arc shape along the outer peripheral surface of the steel pipe Pa to be clamped.

  Further, as shown in FIGS. 4 to 9, the bottom plate portion 9 in the flat region portion 11 of the receiving member 2 has two sides in the left and right width direction within a wide region inside the fastening bolt shaft support portion 13. Four connecting through-holes 22 located at four corners of the virtual square along the direction, and two positioning small diameters located at the center of one of two parallel two sides of the virtual square. A through hole 23 and two positioning projections 24 located at the center position of the other of the two parallel sides of the virtual square are provided. The two positioning projections 24 are formed in a spherical shape by press working so as to protrude outward from the bottom plate portion 9, and have a size that can be fitted into the small-diameter positioning through-holes 23. It is.

  As shown in FIGS. 1 to 3, the two pipe clamps 1A and 1B having the same structure and the same size configured as described above have steel pipes Pa and Pb clamped and fixed by the respective pipe clamps 1A and 1B in directions perpendicular to each other. Then, the bottom plate portions 9 in the flat region portion 11 of the receiving members 2 of the two pipe clamps 1A and 1B are overlapped with each other, and are joined and integrated by four rivets 25 passing through the respective connection through holes 22. This joining operation can be performed without any problem without the positioning small-diameter through-holes 23 and positioning projections 24 provided on the bottom plate 9 in the flat region 11 of the receiving member 2 of each of the pipe clamps 1A and 1B. When the small-diameter through hole 23 and the positioning projection 24 are provided as described above, the bottom plate portions 9 in the flat region 11 of the receiving member 2 of both pipe clamps 1A and 1B are turned 90 degrees and overlap each other. When the two pipe clamps 1A and 1B are oriented at 90 degrees with each other by fitting the two positioning projections 24 of the other pipe clamp 1B into the two small diameter through holes 23 of the other pipe clamp 1A. Since the four connection through holes 22 of the two pipe clamps 1A and 1B are positioned concentrically with each other, they are positioned in different states. Combining work can be performed easily by Tsu door 25

  In the second embodiment shown in FIG. 10, the receiving members 2 of the two pipe clamps 1A and 1B are integrally connected to each other by a shaft 26 in a back-to-back state. Therefore, the bottom plate 9 in the flat region 11 of the receiving member 2 of each of the pipe clamps 1A and 1B is provided with a large-diameter through hole 27 at the center position of the virtual rectangle described in the previous embodiment. The body 26 is formed by expanding both ends of a cylindrical body 26a penetrating through the through holes 27 of the two pipe clamps 1A and 1B concentrically with each other inside the bottom plate 9 to form flange-shaped heads 26b and 26c. As the shaft body 26, a well-known shaft body having a head at one end, or a cylinder integrally formed from a bottom plate portion of a receiving member of one pipe clamp as described in Patent Document 1 Various shafts, such as a shaft, can be used. Further, the pipe clamp according to the present invention can be used not only in combination with the same pipe clamp as described above, but also in combination with a conventionally known U-shaped clamp or the like. In some cases, it is also possible to use by attaching to a structure different from the clamp.

  The pipe clamp of the present invention can be used for assembling a temporary work scaffold at a construction site.

DESCRIPTION OF SYMBOLS 1A, 1B Pipe clamp Pa, Pb Steel pipe 2 Receiving member 2a Inner edge 3,5 Support shaft 4 Holding member 4a One end base 4b Bending free end 4c Inner edge 6 Fastening bolt 7 Fastening nut 8 Notch recess 9 Bottom plate 10a Left and right side plate portions of receiving member 11 Flat region portion 12 Oblique rising region portion 13 Fastening bolt shaft support portion 14 Holding member shaft support portion 15 Wide region portion 16, 17 Bend side plate portion 18 Depressed groove portion 19 Top plate portion 20a, 20b Left and right side plate portions 22 of the holding member 22 Connecting through hole 23 Positioning small diameter through hole 24 Positioning projection 25 Rivet 26 Shaft 26a Cylindrical body 26b, 26c Flange head 27 Large diameter through hole

Claims (1)

A receiving member, a pressing member rotatably supported at one end of the receiving member, a fastening bolt rotatably supported at the other end of the receiving member, and a fastening nut screwed onto the fastening bolt. And by tightening the fastening nut in a state where the fastening bolt is fitted in the notch recess provided at the free end of the holding member, thereby pressing the holding member toward the receiving member. The receiving member is formed of a bottom plate portion and left and right side plate portions integrally bent and inwardly provided from both left and right sides to the inside of the bottom plate portion. It is formed in a U-shape in cross section, and is formed in a side view bent shape including a flat region portion on the side supporting the fastening bolt and an oblique rising region portion on the side supporting the pressing member. The flat region portion of the receiving member At the free end, a fastening bolt shaft support portion having a narrower interval between the left and right side plate portions is formed, and at a free end of the oblique rising region portion, a holding member shaft support portion having a narrower interval between the left and right side plate portions is formed. In a pipe clamp in which a wide region is formed between the fastening bolt shaft support and the holding member shaft support,
At the corner between the bottom plate portion and the left and right side plate portions on both sides thereof in the wide area portion, a concave groove portion obliquely connecting the outer surface of the bottom plate portion and the outer surface of the left and right side plate portions is integrally molded, The bent side plate portions of the left and right side plate portions formed between the wide region portion and the fastening bolt shaft support portion and between the wide region region and the holding member shaft support portion, and the concave groove portion, in a side view, The pipe is formed not in a direction perpendicular to the bottom plate portion of the flat region portion, but in a direction inclined all by the same angle in a direction approaching a side where the fastening bolt shaft support portion is located upward from the bottom plate portion. Clamp.

Images