JPH10141344A - Combined body of rotating nut and support frame - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a nut from falling from arms of a frame body when the nut is rotated in the state of being supported by the arms of the frame body or moved being drawn to a screw. SOLUTION: A combined body is composed of a nut 4 of square pillar shape with a rotating shaft protruded from two opposed side faces with an internal thread l placed in between and with an inclined face 3 at one end, and a frame body 9 with guide grooves 8 piercingly provided in the longitudinal direction of two arm parts 7, 7' with a screw insertthrough hole 5 and wider than the diameter of the rotating shaft 2 of the nut 4. The rotating shaft 2 of the nut 4 has diameter enlarged parts 10, 10' protruded in collar shape in the longitudinal direction of the nut 4 in a position where the tip of the rotating shaft 2 of the nut 4 is protruded from the arm 7 (7') of the frame body 9 and having space, larger than the thickness of the arm 7 (7'), between the back face and the side face of the nut 4, and the rotating shaft 2 is fitted into the guide grooves 8 of the frame body 9.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a nut body which is used by inserting a hole into an inaccessible hollow member on the inner surface and inserting the same from the outside. The present invention relates to a combination of a long prism-shaped rotating nut and a frame for rotatably supporting the nut.

[0002]

2. Description of the Related Art A prismatic nut having a rotating shaft protruding from two opposing side surfaces, and a frame having a guide groove formed in two arm portions, and the rotating shaft of the nut is fitted into the guide groove of the frame. 2. Description of the Related Art There is known a combined body that can be freely rotated and moved. Such a combination can be found in, for example, Japanese Utility Model Publication No. 3556/1982 and Japanese Utility Model Publication No. 25772/1982.

[0003]

In such a conventional combination, when the nut rotates while being supported by the arm of the frame, or when an excessive force is applied when the nut is moved by being attracted to the screw, the nut may fail. There is a problem that it falls off from the arm of the frame. One of the problems is that when inserting the screw, the tip of the nut pushes the rear part of the nut firmly and tries to turn it 90 degrees, and the nut falls off. After turning the nut 90 degrees, the screw turns and pulls the nut. At that time, a twisting motion occurs and drops off.

[0004] In order to prevent such drop-off, it is common to use a solution in which the rotating shaft of the nut is protruded from the arm of the frame and its tip is expanded by means such as caulking. Things. However, in such caulking processing, if excessive pressing is performed, the expanded part may press the arm of the frame body strongly against the nut, and it will not be possible to rotate or move the nut, and the cost will increase due to an increase in the number of processing steps There was a problem that.

[0005] As another method, as shown in Fig. 6 of Japanese Utility Model Application Publication No. 24969/1990, at the tip of the shaft, at least one direction is larger than the minimum diameter of the shaft. Has been proposed. However, according to the configuration shown in the figure, the second problem described above cannot be solved. That is, in the process in which the nut is rotated by 90 ° and pulled, the key-shaped enlarged portion at the tip of the shaft cannot be caught by the arm of the frame, and the nut is dropped by the twisting motion.

[0006]

A female screw penetrating substantially in the center has a rectangular column shape elongated in a direction perpendicular to the female screw axis, and a rotating shaft is projected on two opposite side surfaces with the female screw interposed therebetween, so that the member can be fixed to the member. A prism-shaped nut having an inclined surface at one end serving as a rear portion at the time of insertion, and a guide groove which is wider than a rotation shaft diameter of the nut and penetrates in a longitudinal direction of two arm portions extending from a base having a screw insertion hole. In a combined body comprising a frame body provided and a nut rotating shaft fitted into a guide groove of the frame body and freely moving, before the combination, the tip of the nut rotating shaft is moved from the arm of the frame body. Rotation of a nut having a diameter-enlarged portion that protrudes from the rotation axis of the nut at the protruding position in a longitudinal direction of the nut in a longitudinal direction of the nut and has a space between the back surface and the side surface of the nut that is larger than the thickness of the arm. Axis Combinations thereof, characterized in that fitted to the body of the guide groove.

[0007]

When the equipment is to be fixed to a hollow member or the like by using the combination of the prismatic nut and the frame of the present invention, the combination of the present invention is inserted into the insertion hole provided in the hollow member in advance in the longitudinal direction of the nut. Insert from the nut side so that the frames are aligned. After inserting the equipment, insert the screw and press the tip firmly against the inclined rear part of the nut.
Rotate 0 °. At this time, since the tip of the rotating shaft protruding from the frame is enlarged in both longitudinal directions of the nut, one of the forward-facing flanges is hooked on the frame at the tip of the groove of the arm of the frame, and the nut is not fixed. Prevent shedding. Because it is engaged so strongly that it is pushed strongly, it does not fall off easily.

[0008] When the nut is pushed by the screw and starts to rotate, the collar whose diameter has been expanded in both longitudinal directions becomes caught on the arm of the frame body, and it is possible to prevent the nut from falling off in the subsequent screw tightening process. it can.

[0009]

FIG. 1 shows an embodiment of the present invention. A prism having a female screw 1 penetrating substantially at the center and having a long prism shape in a direction orthogonal to the female screw axis (a prism having a curved surface or a tapered surface at a corner portion;
A prismatic nut 4 including a trapezoidal prism, a rotating shaft 2 protruding from two opposite side surfaces with a female screw 1 interposed therebetween, and an inclined surface 3 at one end serving as a rear portion when inserted into a member;
A frame body 9 having a guide groove 8 which is wider than the diameter of the rotating shaft in the longitudinal direction of the two arm portions 7 and 7 'extending from the base portion 6 having the screw insertion holes 5, and which has a penetrating guide groove 8; In the combination body in which the rotation shaft 2 of the nut is fitted into the guide groove 8 of the nut and is freely movable, before the combination, the tip of the rotation shaft 2 of the nut protrudes from the arm 7 of the frame body. The enlarged diameter portion 1 which protrudes in the longitudinal direction of the nut from the rotation shaft 2 in a brim-like shape and has a space larger than the thickness of the arm 7 between the back surface and the side surface of the nut.
This is a combination body characterized in that the rotation shaft 2 of the nut having 0, 10 'is fitted into the guide groove 8 of the frame. The enlarged diameter portions 10 and 10 ′ are at least prismatic nuts 4.
And the enlarged diameter portion may be provided on the rotating shaft on one of the two side surfaces of the nut.

In the embodiment, the enlarged diameter portion 10 is provided on the side surface of the nut 4 forward from the tip of the arm 7 when assembled.
A protrusion 11 for preventing excessive rotation of the nut is provided at a position at a distance equal to or slightly longer than the protrusion length of the nut, and a claw 12 protruding from the tip of the arm of the frame so as to abut the protrusion 11. Have been. By providing a protrusion 11 on the side surface of the nut 4 at a distance L2 equal to or slightly longer than the protrusion length L1 of the enlarged diameter portion 10 forward from the tip of the arm 7, the rotation shaft 2 of the nut having the protrusion 10 is provided. When fitting into the guide groove 8 of the frame body, the fitting becomes possible.

[00011]

According to the combination of the prismatic nut and the frame body of the present invention, the enlarged diameter portions 10 and 1 of the rotary shaft are inserted at the time of screw insertion, the 90 ° rotation process of the nut and the pulling of the nut.
0 ′ becomes hooked on the arm 7 of the frame, and when the nut moves while being supported by the arm of the frame, the nut falls off from the arm of the frame, that is, one inserts a screw, If the tip of the nut pushes the rear part of the nut strongly and tries to rotate it 90 degrees, it will fall off. In the second case, the screw turns and then pulls the nut after turning the nut 90 degrees. Can solve the problem.

If the nut comes off in the process of turning the screw and pulling the nut, according to the prior art, the nut may "co-rotate" with the screw, making it impossible to tighten the screw. After tightening was completed, there was also a problem that when the screw was reversed and the screw was about to be pulled out, the nut and the screw "co-rotated" and it became impossible to pull out,
According to the combination of the present invention, many of those problems can be solved.

When the nut 4 is assembled, the enlarged diameter portions 10 and 10 'of the rotation axis of the nut are formed in the longitudinal direction of the rotation axis of the nut in a brim-like shape.
The enlarged diameter portion of the rotating shaft can be inserted into the groove of the arm by inserting between the arms 7, 7 'and aligning the directions so that the arms 7, 7' of the frame body and the nut 4 coincide with each other. It should be noted that the combination of the present invention can be combined or separated only in this positional relationship, and no external force is applied to the nut 4 in this positional relationship. The external force during the mounting work is applied to the nut 4 for the first time when the screw is pressed against the inclined surface 3 through the insertion hole 5 of the frame 9, and the pressing force causes the nut 4 to immediately advance the screw. Pushed forward in the direction, the enlarged diameter portion 10 is caught by the arm 7 and does not come off. FIG. 1 shows that the nut 4 is pushed forward,
The state where the enlarged diameter portion 10 is hooked on the arm 7 is shown.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a partially enlarged view showing a relationship between a nut and an arm according to the embodiment of the present invention.

FIG. 3 is a drawing disclosed in a conventional example, Japanese Utility Model Publication No. 3556/1982.

FIG. 4 is a drawing disclosed in a conventional example, Japanese Utility Model Publication No. 24969.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 female screw 2 rotating shaft 3 inclined surface 4 prismatic nut 5 screw insertion hole 6 base 7, 7 'arm 8 guide groove 9 frame 10, 10' enlarged diameter

Claims (2)

[Claims] 1. A female screw penetrating substantially in the center and having a prismatic shape elongated in a direction perpendicular to the female screw axis, and having two opposite side surfaces sandwiching the female screw, a rotating shaft protruding therefrom. A frame having a prismatic nut having an inclined surface at one end thereof, and a guide groove which is wider than the rotation axis diameter of the nut and extends in the longitudinal direction of two arm portions extending from a base having a screw insertion hole. In a combination body in which the rotation axis of the nut is fitted into the guide groove of the frame body and is freely movable, before the combination, at a position where the tip of the rotation axis of the nut protrudes from the arm of the frame body. A nut body having a diameter-enlarged portion protruding from the nut rotation axis in a brim-like shape in the longitudinal direction of the nut and having a space larger than the thickness of the arm between the back surface and the side surface of the nut. In the guide groove Combinations thereof, wherein the combined order. 2. A projection for preventing excessive rotation of the nut at a position on the side surface of the nut at a position at a distance equal to or slightly longer than the projection length of the enlarged diameter portion forward from the tip of the arm when combined, and a frame. 2. The combination according to claim 1, wherein the projection is provided with a claw projecting from an end of an arm of the frame so as to hit the projection.