JPH0622774Y2 - Folding pipe - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Industrial Field of the Invention The present invention relates to a folding pipe adapted to be used, for example, as a support for a tent.

2. Description of the Related Art Folding pipes of this type are, for example, as disclosed in Japanese Utility Model Publication No. Sho 57-31805, one pipe and the other pipe are hinged at one end of both ends to be foldable, and one pipe is At the end of the pipe, a connection holding piece having a semicircular cross section that is superposed on the other side surface of the end of the other pipe is integrally extended, while a sleeve that can be moved in and out of the end is slidably slid the other. There is a structure in which two pipes are fitted to each other in the extension direction by being fitted in the end portion of the pipe.

Problems to be Solved by the Invention In the conventional folding pipe, the sliding operation rod is passed through the sleeve, and both ends of the folding pipe are fitted into a pair of vertically long holes provided opposite to both side surfaces of the pipe end, The sleeve is made to advance and retreat by fitting a hooking tool having a ring formed at both ends to the outer ends of the slide operating rods protruding from both side surfaces of the pipe. Therefore, according to this conventional product, the slide operation rod must be passed through the sleeve,
The fact that a pair of vertically elongated holes must be provided on both sides of the pipe, and that hooks with rings at both ends must be provided separately make the cost high and inconvenient to use. Therefore, it has been required to improve a folding pipe of this kind so as to have a simple structure and be easy to operate.

Means for Solving the Problems In the present invention, therefore, a bearing having an axis line orthogonal to the pipes is integrally provided on one side of one end of one of the two pipes to be folded, and the other end is A hinge shaft through which the bearing is inserted is integrally provided, and a connection holding piece having a semicircular cross section, which is superposed on the other side surface of one pipe, is integrally extended from the end portion of the other pipe, while inside the end portion. A foldable pipe in which a sleeve which can be freely moved in and out is slidably fitted into an end portion of the other pipe so as to connect the two pipes in an extension direction, and a vertically elongated hole is formed on one side of the pipe. Provided is a folding pipe characterized in that a slide operation rod projecting from one side of the sleeve is slidably fitted in the vertically elongated hole, and an outer end of the slide operation rod is formed as a knob. Is.

According to the present invention configured as described above, the slide operation rod is projected to one side of the sleeve, and the slide operation rod is slidably fitted in the vertically elongated hole provided on the one side of the pipe to pick the outer end thereof. Since it is formed as described above, it is possible to obtain a folding pipe having a simple structure and easy to operate by eliminating various drawbacks of the conventional product.

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

In the figure, A and B are two pipes to be folded, 1 is a bearing provided on one side of an end portion a of one pipe A, and a bearing having an axis line orthogonal to the pipe, 2 is a bearing penetrating the bearing 1. By crimping both ends thereof to the connection holding piece 3, the hinge shaft integrally provided at the end b of the other pipe B, the connection holding piece 3 is connected to one pipe A as shown in FIGS. It has a semicircular cross section that is superposed on the other side surface of the end a of the pipe B and is integrally extended from the end b of the pipe B in the extension direction. Reference numeral 4 denotes a sleeve slidably fitted in the end portion b of the one pipe A so as to move in and out from the end portion b of the pipe B. The slide operating rod 6 projecting only to one side is fitted with the pipe B so that the sliding operating rod 5 can be slidably fitted.
The vertical hole 5'provided on one side of the end b of the slide handle 5'is a knob for operation formed on the outer end of the slide operating rod 5, and 7 is a hook-shaped handle provided at the end of the vertical hole 6 for attaching the slide operating rod 5. A hooking portion 8 hooked in each of the forward movement position and the backward movement position, 8 has a fixed end in the middle of the pipe B, and is fitted in the end portion b of the pipe B,
As shown in FIG. 2, the slide operating rod 5 is brought into contact with the slide operating rod 5,
The push spring 8 always biases the sleeve 4 in the projecting direction.
In some cases, the sleeve 4 may be lowered by its own weight from the end b of the pipe B located above.

In the folding pipe configured as described above, when the extension pipe is connected as shown in FIGS. 1 and 2, the connection holding piece 3 is placed on the other side surface of the end portion a of the lower pipe A, and the lower end of the sleeve 4 is attached. The two springs A and B are firmly connected by pushing them into the lower end A of the pipe A by the pressing spring 8 and hooking the slide operating rod 5 on the hooking portion 7 at the lower end of the vertically elongated hole 6. There is. When folding, hold the knob 5'to release the hook of the slide operating rod 5 and to resist the pressing spring 8 and the sleeve 4
When the pipe A is retracted to escape from the end a of the lower pipe A, the two pipes A and B can be folded in two via the bearing 1 and the hinge shaft 2 as shown in FIG. The sleeve 4 is held in the retracted position by hooking the slide operating rod 5 on the hook portion 7 at the other end of the vertically elongated hole 6.

Effect of the Invention As described above, according to the present invention, one pipe and the other pipe are hinged at one end of both ends to be foldable and the other side is provided with a connection holding piece having a semicircular cross section. Then, in the folding pipe in which the sleeve that fits into the end is fitted to the end of one pipe, a vertically elongated hole is provided in one side of the pipe into which the sleeve is fitted, and the vertically elongated hole is formed from one side of the sleeve. Since the protruding slide operation rod is slidably fitted and the outer end of the slide operation rod is formed as a knob for operation, compared with the conventional product in which a vertically elongated hole and a slide operation rod are provided on both sides. The structure is simplified and the restrictions on the installation position are reduced, so that the cost can be reduced. In addition, according to the present invention, the use of the hooking device can be omitted, so that there is a practical effect that the folding operation is easy.

[Brief description of drawings]

1 is a partially cutaway perspective view showing an embodiment of the present invention, FIG. 2 is a partially cutaway side view, and FIG. 3 is a partially cutaway side view showing a folded state. A, B ... Pipe, a, b ... End, 1 ... Bearing, 2 ... Hinge shaft, 3 ... Connection holding piece, 4 ... Sleeve, 5 ... Sliding rod, 5 '... Pick , 6 ... Vertically elongated hole, 7 ... Hook, 8 ... Push spring.

Claims (3)

[Scope of utility model registration request] 1. A bearing 1 having an axis perpendicular to the pipe is integrally provided on one side of an end a of one of the two pipes A and B to be folded, and the end b of the other B is Bearing 1 above
Is integrally provided with a hinge shaft 2 through which the connection holding piece 3 having a semicircular cross section is superposed on the other side surface of the end portion a of the one pipe A, and integrally extends from the end portion b of the other pipe B. On the other hand, the sleeve 4 which can be inserted into and removed from the end portion a is slidably fitted into the end portion b of the other pipe B to couple the two pipes A and B in the extension direction. In the folding pipe thus configured, a vertically elongated hole 6 is provided on one side of the pipe B, and a slide operation rod 5 protruding from one side of the sleeve 4 is slidably fitted in the vertically elongated hole 6 and the slide is performed. A folding pipe characterized in that the outer end of the operating rod 5 is formed into an operating knob 5 '. 2. The utility model registration claim characterized in that the sleeve is fitted from the end portion b of the other pipe B located above into the end portion a of the one pipe A by its own weight. Folding pipe according to claim 1. 3. A utility model registration claim 1 according to claim 1, characterized in that a latching portion (7) capable of latching the slide operating rod (5) is provided at one or both ends of the vertically elongated hole (6). Folding pipe.