JP2006063653A - Cap for pin bearing nut for temporary work support - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cap which is rotatably connected to an upper peripheral edge of a pin bearing nut for a temporary work support, wherein the pin is prevented from moving in a pin hole or from slipping out of the pin hole. <P>SOLUTION: The cap for the pin bearing nut has leg plates 24, guide holes 25, and curved holding portions 27. Each leg plate 24 has an insertion recess 23 and radially protrudes from a bottom outer peripheral surface of a cylindrical body 22 thereof. Each guide hole 25 has almost the same diameter as that of a pin hole 7, and is bored in an area astride an upper surface of the leg plate 24 and a lower surface of the cylindrical body 22. Each curved holding portion 27 is formed in the upper portion of the leg plate 24 and in the lower surface of the cylindrical body 22, and has a notch 26, for holding a lower outer peripheral surface of a pin 6 inserted into the pin hole 7 and the guide hole 25. Further each guide hole 25 has a plurality of inverted triangular projections 28 formed on an upper inner peripheral wall thereof, for engaging in an upper outer peripheral surface of the pin 6. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

The present invention relates to a cap for a pin receiving nut of a temporary work support capable of finely adjusting the total length of the temporary work support in the temporary work support.

Conventionally, for example, an annular nut disclosed in Japanese Patent Application Laid-Open No. 11-107546 is known as a pin receiving nut capable of finely adjusting the total length of the temporary work support.

JP-A-11-107546

The pin receiving nut in the temporary work support disclosed in Patent Document 1 is indicated by reference numeral “16” in FIGS. 4 (A) and 4 (B) of Patent Document 1, but the pin 3 is a pin hole. 15, when the pin receiving nut 16 is screwed and rotated in the screw shaft portion 17 to move up and down, the pin 3 moves each time the pin receiving nut 16 moves up and down, Alternatively, there is a problem that the pin hole 15 falls off.

The present invention has been made in order to solve the above-mentioned problems. By connecting the cap so as to be rotatable at the upper peripheral edge of the pin receiving nut, the pin moves in the pin hole, or the pin It is an object of the present invention to provide a cap for a pin receiving nut of a support for temporary work that does not fall out of a hole.

The present invention inserts a small-diameter upper pipe having a receiving plate at its upper end into a large-diameter lower pipe having a base plate at its lower end so as to be movable up and down, and a pin that penetrates the upper pipe in a diametrical direction. A plurality of holes are drilled at predetermined intervals in the length direction, and an appropriate length of male screw is provided around the outer periphery of the upper portion of the lower pipe. A cap that is rotatably connected to a pin receiving nut that is screwed into a male screw of a temporary work support formed by drilling long holes parallel to the direction,
Each of the caps has two leg plates each provided with a insertion recess that fits into a flange provided around an upper peripheral edge of the threaded portion of the pin receiving nut in the diameter direction of the outer peripheral surface of the bottom of the cylindrical body. In addition to projecting, guide holes having substantially the same diameter as the pin holes are formed in the diametrical direction across the upper surface portion of each leg plate and the lower surface portion of the cylindrical body, and further, the upper portion of each leg plate and the cylinder Provided on the lower surface of the body is a curved holding portion having a notch portion for holding the pin hole and the lower outer peripheral surface portion of the pin inserted through the guide hole, and the upper outer peripheral surface portion of the pin on the upper inner peripheral wall surface of the guide hole A plurality of inverted triangular projections that bite into the cap, and further, insertion recesses of the leg plates of the cap are fitted into flanges of the pin receiving nut, and the cap is placed on the pin receiving nut. Adopting a means to connect to the Accordingly, the above-mentioned problems are eliminated.

The cap of the present invention is rotatably connected to the peripheral edge of the upper end of the pin receiving nut, and the pin receiving nut is screwed into the male screw portion of the large-diameter lower pipe so that the upper pipe is connected to the lower pipe. The pin hole of the predetermined height and the guide hole of the cap are aligned with each other, and the pin is inserted into the pin hole and the guide hole. Are held by the U-shaped curved holding portion, and the sharp portions of the inverted triangular protrusions bite into the upper outer peripheral surface portion of the pin so that the pin moves in the pin hole or falls out of the pin hole. There is nothing.

Embodiments of the present invention will be described in detail with reference to the drawings. In the embodiment of the present invention, the description will be made assuming that the cap of the present invention is attached to the pin receiving nut in the temporary work support of Japanese Patent Application No. 2003-131158 according to the applicant's application. The cap of the present invention can also be used in the constructed support.

FIG. 1 is a perspective view of an entire cap mounting of a pin receiving nut of a support for temporary construction shown by connecting the cap of the present invention to the peripheral edge of the upper end of the pin receiving nut so as to be freely rotatable. FIG. FIG. 3 is an exploded perspective view of the same. That is, the temporary work support 1 is inserted into a large-diameter lower pipe 3 having a base plate 2 at its lower end so that a small-diameter upper pipe 5 having a receiving plate 4 at its upper end can be raised and lowered. In the diameter direction, a plurality of pin holes 7 penetrating the pins 6 for adjusting the support length are formed at predetermined intervals in the length direction, and further downward from the outer peripheral upper edge of the lower pipe 3. A male screw 8 is provided in a suitable length in the direction, and long holes 9 parallel to the length direction are formed on both sides in the diameter direction of the male screw 8, and a pin receiving nut is provided in the male screw 8. 10 is screwed together.

As shown in FIG. 3, the pin receiving nut 10 is provided with a female screw 12 that is threadedly engaged with the male screw 8 of the lower pipe 3 on the inner peripheral surface of the annular screwing portion 11. On the outer peripheral surface in the diametrical direction of the threaded portion 11, two rotating bracket receivers 14 are provided so as to project and mount the rotating bracket 13 for rotating the pin receiving nut 10. The rotating bracket receiver 14 has an upright piece 15 projecting from an outer end thereof, and the rotating bracket 13 of the pin receiving nut 10 is inserted between the upstanding piece 15 and the screwing portion 11 and latched. An insertion recess 16 is provided to form an L shape.

Although not particularly limited, it is preferable that a protrusion 17 for preventing the rotation of the rotary fitting 13 is provided on the peripheral wall of the screwing portion 11 facing the upright piece 15. In the figure, reference numeral 18 denotes a flange that is provided around the outer peripheral edge of the upper end of the screwing portion 11, and each leg plate 24 that protrudes from the lower end of a cap 21 described later is fitted into the flange 18. It is formed as follows.

A cap 21 for preventing the pin 6 from moving in the pin hole 7 or coming off from the pin hole 7 is rotatably connected to the peripheral edge of the upper end of the pin receiving nut 10. In other words, the cap 21 is connected to the upper end of the threaded portion 11 of the pin receiving nut 10 in the diameter direction of the outer peripheral surface of the bottom portion of the cylindrical body 22 formed to have a diameter substantially equal to the diameter of the pin receiving nut 10. It is provided with a loading recess 23 that is inserted into a flange 18 provided around the outer peripheral edge and can be rotatably connected without being detached, and has a length of about one-fourth of the circumferential length. Two leg plates 24 each having a U-shaped cross section are projected, and a guide hole 25 having substantially the same diameter as the pin hole 7 is formed across the upper surface portion of each leg plate 24 and the lower surface portion of the cylindrical body 22. Each of the guide holes 25 is formed so that the pin 6 can be inserted therethrough.

Then, the cap 21 is inserted into the pin receiving nut 10 by inserting the insertion recesses 23 of the leg plates 24 into the flanges 18 provided around the upper peripheral edge of the threaded portion 11 of the pin receiving nut 10. It is connected so that it can rotate freely.

In addition, in order to make it easier to press-fit each leg plate 24 of the cap 21 into the flange 18 from above the pin receiving nut 10 on the lower surface of the bent piece 24a below each leg plate 24 of the cap 21, an inclined surface inclined upward. 24b is provided. By providing the inclined surface 24b, the inclined surface 24b is in sliding contact with the outer peripheral surface of the flange 18 to serve as a guide, and the insertion recess 23 is easily fitted into the flange 18 so that the cap 21 is pin-received. It will not detach from the nut 10.

Further, the upper portion of the leg plate 24 and the lower surface portion of the cylindrical body 22 constituting each guide hole 25 drilled across the upper surface portion of each leg plate 24 and the lower surface portion in the diameter direction of the cylindrical body 22 are inserted into the insertion portion. A U-shaped curved holding portion 27 having a notch portion 26 for holding the lower outer peripheral surface portion of the pin 6 is formed, and the upper inner peripheral wall surface of the guide hole 25 is formed on the upper outer peripheral surface portion of the pin 6. Plural (six in the embodiment) inverted triangular projections 28 that bite are provided.

When the pin 6 is inserted into the pin hole 7 and the guide hole 25, the lower bottom portion of the pin 6 is in sliding contact with the upper peripheral surface of the screwed portion 11 that is partially exposed at the notch portion 26. The lower outer peripheral surface portion of the pin 6 is held by the U-shaped curved holding portion 27, and the sharp portion 28a at the tip of each inverted triangular protrusion 28 bites into the upper outer peripheral surface portion of the pin 6. The pin 6 is inserted between the pin receiving nut 10 and the cap 21 without being moved in the pin hole 7 and the guide hole 25, or coming off from the pin hole 7 and the guide hole 25. .

The operation of the cap in the pin receiving nut of the temporary support according to the present invention having the above-described structure will be described. After the screwing portion 11 of the pin receiving nut 10 is screwed into the male screw 8 of the lower pipe 3, the cap 21 The insertion recesses 23 of the leg plates 24 are fitted into flanges 18 that are provided around the upper peripheral edge of the threaded portion 11 of the pin receiving nut 10 so that the cap 21 can be rotated on the pin receiving nut 10. On the other hand, a small-diameter upper pipe 5 is inserted into the large-diameter lower pipe 3, and the upper pipe 5 is appropriately raised and lowered with respect to the lower pipe 3, so that the total length of the support 1 is about the height of the place of use. Adjust roughly.

After the adjustment, the cap 21 is appropriately rotated on the pin receiving nut 10 so that each predetermined pin hole 7 located in the long hole 9 and each guide hole 25 of the cap 21 are aligned, The pin 6 is inserted into each pin hole 7 and each guide hole 25. The pin 6 inserted into the pin hole 7 and each guide hole 25 is held at the lower outer peripheral surface portion by the U-shaped curved holding portion 27 and the sharp portion at the tip of each inverted triangular projection 28 on the upper outer peripheral surface portion. 28a bites into the pin 6 so that the pin 6 is prevented from moving and falling off and fixed.

After the pins 6 are inserted into the pin holes 7 and the guide holes 25, the pins 6 are inserted into the insertion recesses 16 of the rotary fitting receiver 14 protruding from the pin receiving nut 10. For example, a bar, a screwdriver, a steel bar, or the like having a diameter that can be hooked is loaded as a rotating metal fitting 13 (bar is shown in FIG. 1) and hooked. The pin receiving nut 10 is rotated in the forward direction.

When the pin receiving nut 10 is rotated in the forward direction, the upper peripheral surface of the threaded portion 11 is brought into sliding contact with the lower bottom portion of the pin 6 at the cutout portion 26 of the cap 21, and the frictional resistance is reduced. The receiving nut 10 smoothly rotates along the male screw 8 of the lower pipe 3, but the cap 21 is pressed by the pin receiving nut 10 without rotating while the pin 6 is inserted into the guide hole 25. As the pin receiving nut 10 and the cap 21 are also raised, the pin 6 is gradually pushed upward, and the upper pipe 5 is raised together with the pin 6 so that the overall length of the entire support 1 can be finely adjusted. It is. Then, when the upper pipe 5 rises to a predetermined position, the rotation of the pin receiving nut 10 is stopped to complete the adjustment of the entire length of the support 1.

Further, when the pin receiving nut 10 is rotated in the reverse direction while holding the rotating fitting 13, the pin receiving nut 10 and the cap 21 are lowered, so that the upper pipe 5 is its own weight, and the pin 6 is the pin. The support 1 is lowered while being sandwiched between the receiving nut 10 and the cap 21, and the entire length of the support 1 can be finely adjusted.

In FIG. 1, two rotating bracket receivers 14 project from the outer peripheral surface of the screwing portion 11. However, although not shown, the purpose can be achieved even if the number of the rotating bracket receivers 14 is one, or three or more. When two or more rotating bracket receivers 14 are provided on the outer peripheral surface of the screwing portion 11, the rotating bracket 13 is inserted into one of the rotating bracket receivers 14 and used.

It is a perspective view of the whole support which attached the cap in the pin receiving nut of the support for temporary construction of this invention. It is the longitudinal cross-sectional view. It is an assembly exploded perspective view of the support which uses the cap in the pin receiving nut of the support for temporary work of the present invention. It is a front view of the cap in the pin receiving nut of the support for temporary construction of the present invention. It is the same side view. It is the same top view. It is AA sectional drawing of FIG. It is BB sectional drawing of FIG. It is the perspective view which connected this invention cap to the pin receiving nut of this invention temporary work support. It is CC sectional drawing of FIG. It is DD sectional drawing of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Temporary construction support 3 Lower pipe 5 Upper pipe 6 Pin 7 Pin hole 8 Male screw 9 Long hole 10 Pin receiving nut 11 Screwing part 18 Flange 21 Cap 22 Cylindrical body 23 Insertion recessed part 24 Leg plate 25 Guide hole 26 Notch part 27 Curved holding portion 28 Inverted triangular projection

Claims (1)

A large-diameter lower pipe with a base plate at the lower end is fitted into a small-diameter upper pipe with a receiving plate at the upper end so that it can be raised and lowered, and a pin hole that penetrates the pin in the diametrical direction is lengthened in the upper pipe. A plurality of perforations having a predetermined interval in the direction are provided, and male screws of an appropriate length are provided on the outer periphery of the upper portion of the lower pipe, and both the diametrical sides of the male screws are parallel to the length direction. A cap that is rotatably connected to a pin receiving nut that is screwed into a male screw of a temporary work support formed by drilling long holes,
Each of the caps has two leg plates each provided with a insertion recess that fits into a flange provided around an upper peripheral edge of the threaded portion of the pin receiving nut in the diameter direction of the outer peripheral surface of the bottom of the cylindrical body. In addition to projecting, guide holes having substantially the same diameter as the pin holes are formed in the diametrical direction across the upper surface portion of each leg plate and the lower surface portion of the cylindrical body, and further, the upper portion of each leg plate and the cylinder Provided on the lower surface of the body is a curved holding portion having a notch portion for holding the pin hole and the lower outer peripheral surface portion of the pin inserted through the guide hole, and the upper outer peripheral surface portion of the pin on the upper inner peripheral wall surface of the guide hole A plurality of inverted triangular projections that bite into the cap, and further, insertion recesses of the leg plates of the cap are fitted into flanges of the pin receiving nut, and the cap is placed on the pin receiving nut. It is characterized in that it can be freely connected to Cap in the pin receiving nut of temporary construction for the support that.

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