JPS6322332Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a bending and fixing mechanism for a tube material, a bar material, etc., which is attached to a connecting portion between members and can bend the members and firmly fix the members.

It is common practice to make the joints of members such as tubes and rods bendable so that they can be changed into shapes or folded depending on the intended use. An object of the present invention is to provide a bending and fixing mechanism that can bend such a member and fix it more firmly.

An embodiment of the present invention will be described below with reference to FIGS. 1 to 4.

Each open end of the base material 1 and the bending material 2 is fixed to the end of a member such as a tube material or a bar material to form a connecting portion of the member.

At the tip of this base material 1, there is a pivot shaft 2a of the bending material 2.
The bending member 2 is pivotally attached to the base member 1 from below and is rotatable relative to the base member 1. Furthermore, a stopper 3 that slides in the longitudinal direction is attached to the bending member 2.
The function is to press the bending material 2 and fixing the bending material 2 to the base material 1. For this reason, the stopper 3 is
A spring 4 is provided so as to be always biased toward the substrate 1. Unless the spring 4 is stretched by an external force, it biases the stopper 3, so that the stopper 3 presses the bending member 2 and abuts against the front end surface of the base member 1. The spring 4 may be connected to the upper end of the pivot shaft 2a of the bending member 2, or may be connected to a base 4a rotatably attached to the lower surface of the substrate 1 as shown in FIG. In this way, by connecting the bending material 2
A tensile force can be applied depending on the bending state of the

A rotatable actuating piece 5 is provided on the upper surface of the bending member 2, and the intermediate portion of the actuating piece 5 and the stopper 3 are connected by a connecting wire. This connecting line 6
The stopper 3 may be formed of a spring with a smaller spring constant and weaker resiliency than the spring 4 that urges the base material in one direction, or may be formed of a simple wire. Furthermore, a wedge member 7 that is biased toward the stopper 3 is connected to the tip of the actuating piece 5 . When the stopper 3 collides with the base material 1, this wedge member 7 bites into the stopper 3 by a spring 8 connecting the wedge member 7 and the stopper 3, thereby further strengthening the fixing force of the stopper 3.

In order to facilitate this action, the upper surface of the bending member 2 is provided with a long groove 2e or rail in which the wedge member 7 slides in the longitudinal direction, and a wedge member 7-shaped groove is provided on the outer wall of the rear end of the stopper 3. A recessed portion 3d is provided. The rear end of the wedge member 7 is connected to the tip of the actuating piece 5 by a connecting line 9, and when the actuating piece 5 rotates backward, the wedge member 7
is detached from the concave portion 3d, and the wedge effect can be released.

The operation of this embodiment configured in this way is as follows:
As shown in the figure, when the actuating piece 5 is rotated backward using a hook rod, a hook string, etc. (not shown), or by hand, the connecting line 9 provided at the tip of the actuating piece 5 is first pulled. The wedge member 7 is detached, and the connecting wire 6 connected to the middle part of the actuating piece 5 is then pulled, so that the stopper 3 slides backward against the spring 4 that biases it in the direction of the base material 1. , base material 1 and bending material 2
The bending member 2 is now free to rotate relative to the base member 1. In this state, when the bending member 2 is rotated and bent relative to the base material 1, and then the external force is released, the stopper 3 is pulled in the direction of the base member 1 by the spring 4, and the bending member 2 is bent again. 2 is pressed to come into contact with another end surface of the base material 1, and the wedge member 7 is fitted to further strengthen the pressing and fixing.

Therefore, according to the embodiment, the connecting portions of members such as tubes and rods can be bent and stretched as desired, and the operation is simple because it is only necessary to apply force to the actuating piece. Furthermore, the fixation after bending and distraction is made strong because both the force from the stopper and the force from the wedge member are used together.

FIG. 5 shows another embodiment of this invention, in which the bending member 2 has a wide head 2c with a tapered portion 2b formed at the tip thereof, and this tapered portion 2b is connected to the stopper 3. Since they collide, they can be more firmly fixed to the base material 1. Therefore, when the bending member 2 is aligned with the base member 1 or rotates, the tapered portion 2b is exposed outward from the end surface of the base member 1, and as shown in FIG. The stopper 3 forms a narrow tapered surface 3b on the inner wall facing toward the back from the flat surface 3a at the tip, and the inclination angle of this tapered surface 3b is formed to be the same as the inclination angle of the tapered part 2b of the bending member 2. Then, a bending member 2 is placed further inside this tapered surface 3b.
A sliding surface 3c into which is inserted is formed.

FIG. 6 shows still another embodiment of this invention, in which a curved portion 3d is formed at the tip of the stopper 3, uneven teeth 3e are formed on the front surface of this curved portion 3d, and the lower surface of the base material 1 is formed. In this example, an engaging member 1b is provided between the bending member 2 and the bending member 2. This interlocking material 1
b is disk-shaped so as to fit into the curved end portion 3d of the stopper 3, and uneven teeth 1c that mesh with the uneven teeth 3e of the stopper 3 are formed on the side end surface of this disk. Therefore, in this embodiment, the bending member 2 can be bent at a desired angle with respect to the base material 1.

Furthermore, in the present invention, as shown in FIG. It becomes possible to give a rhythm to the bending action of the material 2.

Furthermore, it is also possible to cover the entire joint between the base material 1 and the bending material 2 with rubber, plastic, etc., thereby making the mechanism of the present invention highly durable.

As described above, the present invention has the advantage that it is possible to provide a bending and fixing mechanism that can bend members such as tubes and rods, and can also firmly fix them.

[Brief explanation of the drawing]

Fig. 1 is a perspective view from above of an embodiment of this invention, Fig. 2 is a perspective view from below, Fig. 3 is a side view thereof, and Figs. 5 shows another embodiment of this invention, A is a perspective view thereof, B is a sectional view taken along the line V-V of A, and FIG. 6 shows yet another embodiment, A is a bottom view. Figures 1 and 2 are side views, and Figure 7 is a bottom view showing still another embodiment. 1...Base material, 1b...Interlocking material, 2...Bending material,
2b... Taper part, 3... Stopper, 3d...
Curved portion, 1c, 3e... uneven teeth, 4... spring,
5... Operating piece, 6... Connecting wire, 7... Wedge member, 8... Spring, 9... Connecting line, 10... Steel plate.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A bending member rotatably attached to a base material, a stopper slidably provided on the bending member and fixing the bending member to the base material, and a stopper that is attached to the base material. a spring biased in the direction of the bending material; an actuating piece rotatably provided on the bending material and connected to the stopper by a connecting wire; A bending fixing mechanism for a pipe material, a bar material, etc., which is a wedge member inserted between a stopper and a bending material. (2) The pipe material and rod according to claim 1 of the utility model registration claim, characterized in that a tapered part is formed at the tip of the bending member, and the stopper is fixed by abutting against this tapered part. Mechanism for bending and fixing materials, etc. (3) The front surface of the stopper is a curved part, and a mating material that fits into this curved part is formed on the base material, and unevenness is carved on the curved part and the mating material so that they mesh with each other. A bending and fixing mechanism for pipes, rods, etc. as set forth in claim 1 of the utility model registration claim. (4) A mechanism for bending and fixing a pipe material, a bar material, etc. according to claims 1 and 2 of the utility model registration claim, characterized in that the base material is provided with a steel plate that comes into contact with the tip end surface of the bending material.