JPH0221990Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to the structure of a crimp pole that is used across walls, between walls and objects, between ceilings and floors, etc.

Conventionally, in this type of crimp pole, for example, a small diameter pipe is inserted into a large diameter pipe, and a coil spring that expands and contracts in the length direction of the pipe is provided in the large diameter pipe, and the coil spring causes the small diameter pipe to connect to the large diameter pipe. There are some things that have been made to stand out from the crowd.

However, in such conventional devices, the small-diameter pipe is made to protrude from the large-diameter pipe simply by the repulsive force of the coil spring, so even if it is passed between walls, etc., the pressure of the pole against the wall is strong. There is a drawback that it is difficult to obtain a predetermined pressure bonding force because the pressure cannot be adjusted.

In view of these conventional drawbacks, the present inventor has made extensive efforts to provide a crimp pole structure that eliminates the above-mentioned drawbacks.

The present invention will be described below with reference to the drawings.

In the drawings, reference numeral 1 denotes a tube body made of metal, synthetic resin-coated metal, or the like. The tubular body 1 has an appropriate cross-sectional shape such as circular, oval, rectangular, polygonal, etc.

Reference numeral 2 denotes a support cylinder, which is made of synthetic resin, metal, or the like. The support tube 2 has an inner diameter approximately equal to the outer diameter of the tube 1, and is externally fitted and fixed to the end of the tube 1. The cross-sectional outer shape of the support tube 2 is circular, and the end of the support tube 2 on the end surface side of the tube body 1 is opened so as to cover the end surface of the tube body 1, and the outer periphery of the opposite end is provided with a collar-shaped stopper. 21 are provided. Further, on the outer surface of the support tube 2, as shown in FIG. 2, an indication 22 indicating the compression dimension or compression force of the coil spring 5, which will be described later, is usually provided along the length direction.

3 is a cylindrical nut made of synthetic resin, metal, or the like. The cylindrical nut 3 is inserted into the open end of the support tube 2 so as to be slidable in the length direction of the tube body 1, and is not rotatable with respect to the support tube 2. As a method for making it unrotatable, the cross-sectional outer shape of the cylindrical nut 3 and the inner shape of the open end of the support tube 2 are similar to each other other than a circular shape, such as a rectangular, oval, polygonal, or other irregular shape. The shape of the convex portion and the concave portion fit together so that both cannot rotate. Further, a retaining portion 31 is provided protruding from the end of the cylindrical nut 3 inside the tube body 1.

4 is a sliding tube made of synthetic resin, metal, or the like. The sliding tube 4 is shaped like a cap and has an inner diameter that is approximately equal to or slightly larger than the outer diameter of the support tube 2, and is slidably placed over the end of the tube body 1 onto which the support tube 2 is fitted. A shaft 42 extends from the closed head 41 of the sliding tube 4 in the axial direction of the sliding tube 4 . The shaft 42 has a male threaded portion, is screwed into the cylindrical nut 3, and has a retaining portion 43 protruding from its end.

Reference numeral 5 denotes a coil spring, which is provided between the end of the support cylinder 2 and the head 41 of the sliding cylinder 4 so as to be fitted over the shaft 42 and the cylindrical nut 3. The coil spring 5 is configured to expand and contract in the length direction of the tube body 1, and the repulsive elasticity of the coil spring 5 causes the sliding tube 4 to always protrude outward from the end of the tube body 1. There is.

6 is an elastic body made of rubber or synthetic resin,
It is attached to the outer surface of the head 41 of the sliding tube 4. The elastic body 6 is attached to the sliding tube 4 via a pedestal 61 as shown in FIGS. 5 and 6, and if the pedestal 61 is rotatable, the elastic body 6 is in contact with a wall surface, etc. The compressive force of the coil spring 5 can be adjusted by easily rotating the sliding tube 4 in the same state.

In the case of FIG. 1, it is a crimp pole used as a clothesline pole, etc., in which a cap is placed on one end of the pipe body 1 and the structure of the present invention is provided on the other end. By rotating the slide tube 4, the sliding tube 4 is slid in the length direction of the tube body 1 as shown in FIG. 3, and then the elastic body 6 is pressed against the wall surface 7 as shown in FIG. The other end of the body 1 is brought into contact with the other wall (not shown), and the crimping pole is passed between the walls. Also, when rotating the sliding tube 4 and sliding it in the length direction of the tube body 1, the display 22 on the outer surface of the support tube 2 as shown in FIG.
The compression dimension or compression force of the coil spring 5 may be adjusted by rotating the sliding tube 4 while referring to the following. After passing the crimping pole between the walls, if the crimping force of the crimping pole against the wall is too strong or too weak, rotate the sliding tube 4 in that state and tighten the coil spring 5. Just adjust the compression force.

In the case of FIG. 7, a small-diameter tube 1 is slidably and stopably inserted into a large-diameter tube 1', and the crimp pole is provided with the groove structure of the present invention at the end of the small-diameter tube 1. In the case of FIG. 3, a smaller diameter tube 1 is slidably and stopably inserted into the other end of the large diameter tube 1' of FIG. 7, which is a crimping pole. Furthermore, the case shown in FIG. 9 is a case where the structure of the present invention is provided at the end of the crimping pole constituting the column.

As described in detail above, in the structure of the present invention, a cylindrical nut that slides in the length direction of the tube is inserted into the open end of a support tube fitted externally on the end of the tube, and the nut slides on the cylindrical nut. The shaft of the tube is screwed into the tube, and a coil spring that expands and contracts in the length direction of the tube is provided between the end of the support tube and the head of the sliding tube, so the sliding tube rotates with the shaft and slides. By moving the sliding tube, the degree of protrusion of the sliding tube from the end of the tube body, that is, the compression force of the coil spring can be easily adjusted, and the pressing force of the pressing pole against the wall surface etc. can be easily adjusted. Moreover, the crimping force can be adjusted even after the crimping pole is passed across the wall.

In addition, since the compression dimension or compression force of the coil spring is indicated along the length direction on the outer surface of the support tube, rotate the sliding tube while referring to this display and rotate the slide tube in the length direction of the tube. By sliding, the crimping force of the crimping pole can be easily adjusted and a predetermined crimping force can be easily obtained.

[Brief explanation of drawings]

Fig. 1 is a front view showing an embodiment of the crimp pole having the structure of the present invention, Fig. 2 is an enlarged front view of section A in Fig. 1, and Fig. 3 shows the state of the coil spring of the structure of the present invention before compression. 4 is a sectional view showing the state of the coil spring of the invention structure when it is compressed, FIGS. 5-6 are sectional views showing other embodiments of the invention structure, and FIGS. 7-9 are FIG. 3 is a front view showing an embodiment of a crimp pole or shelf each having the structure of the present invention. DESCRIPTION OF SYMBOLS 1...Tube body, 2...Support cylinder, 21...Abutment stop part, 22...Display, 3...Cylindrical nut, 31...
Retaining part, 4...Sliding tube, 41...Head, 42
... shaft, 43 ... retaining part, 5 ... coil spring, 6 ... elastic body, 61 ... pedestal, 7 ... wall surface.

Claims (1)

[Claims for Utility Model Registration] 1. A support tube 2 is fitted onto the end of the tube 1, and a cylindrical nut 3 that slides in the length direction of the tube 1 is rotated at the open end of the support tube 2. A retaining portion 31 is provided in a protruding manner at the end of the cylindrical nut 3 inside the tube body 1, and a cap-shaped sliding tube 4 is placed over the end of the tube body 1. A shaft 42 extending in the axial direction of the sliding tube 4 from the head 41 of the shaft 4 is screwed into the cylindrical nut 3, and a retaining portion 4 is attached to the end of the shaft 42.
3 is provided protrudingly, and connects the end of the support tube 2 and the sliding tube 4.
A crimped ball structure in which a coil spring 5 that expands and contracts in the length direction of the tube body 1 is inserted between the head 41 of the shaft 42 and the cylindrical nut 3. 2. The structure of the crimped ball according to claim 1, in which an indication 22 of the compression dimension or compression force of the coil spring 5 is provided on the outer surface of the support cylinder 2 along the length direction.