JPH0111892Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a device for holding a foldable connecting pipe for a tent in an extended state.

[Conventional technology]

When assembling a tent using a foldable connecting pipe for tents, if the extended pipe bends or comes off at the connection, the tent may collapse and fall, which is dangerous, so make sure that the extended state is secure. must be retained.

For this reason, for example, Japanese Utility Model Application Publication No. 56-150426 discloses an extended state holding device that reliably maintains the extended state. This extended state holding device will be explained with reference to FIG.

FIG. 5 shows a state in which both pipes 21a and 21b are connected in an extended state, and the extended state holding device 22
is a scissor-shaped spring that forms a nested joint at the ends of both pipes 21a and 21b, and locks the expanded tip so that it bites into the inner wall of the pipe when a tensile force is applied to the inside of each pipe in the direction of the end of the pipe. A connecting member 26 consisting of an elastic strip 24 and a flexible strip 25 is provided between the locking member 23.
Furthermore, a protrusion 27 is formed at the tip of the locking member 23, and both pipes 21a,
Holes 28 and 29 are formed in the nested joint portion of 21b, and the projections 27 are made to protrude outward from the holes 28 and 29. When folding this device, the protrusion 27 is pushed down, the pipes 21a and 21b are pulled in the removal direction, and the removed pipe 21b is folded into the other pipe 21b.

[The problem that the idea attempts to solve]

However, the elongated state holding device 2 as described above
2, the nested joint part prevents bending, and the fitting between the protrusion 27 and the hole prevents it from coming off, but it is not strong enough, and the pipe must be pulled and inserted each time it is connected or folded. The work involved is complicated, and the structure is also complicated.Furthermore, when folded, both pipes are not fixed, making it unstable and unsuitable for transportation.

Therefore, the present invention has sufficient strength to withstand disconnection and bending, allows reliable and strong connection, is easy to work with, and has a simple structure.Moreover, when folded, both pipes are fixed, making it easy to transport. It is an object of the present invention to provide a device for holding a foldable connecting pipe for a tent in an extended state, which is most suitable for use in a tent.

[Means to solve the problem]

In order to achieve the above object, the present invention connects both ends of the pipes, which are connected by butting their opposing surfaces, to a semicircular part having an inner surface of approximately the same arc as the outer periphery of the pipe, and connected to both sides of the semicircular part. one pipe is fixed to the pipe cover by disposing it along the inner surface of the semicircular part of a pipe cover having a U-shaped cross section and a flat part;
The other pipe is rotatably connected via a hinge to a through shaft installed between bearing parts formed at positions outside the outer periphery of the pipe on both flat parts of the pipe cover, and A pin hole is passed through the side wall and the pipe cover on the outside thereof, a pin is provided at the tip of a spring provided inside the other pipe for the pin hole, and a flat surface is provided on the inner surface of the pipe cover along the pin path when the pipe turns. The present invention is characterized in that a groove-shaped guide surface is formed from the edge of the portion toward the pin hole.

[Effect]

To extend and connect both pipes using the foldable connecting pipe for a tent according to the present invention, the other pipe is turned to a position where it butts against one pipe. At this time, the pin installed inside the other pipe is
Initially, it protrudes outward from the pin hole, but is pushed down and comes into contact with a guide surface formed on the inner surface of the pipe cover, and further rotates to slide on the guide surface and is guided to the pin hole of the pipe cover, It protrudes outward from the pin hole due to the bias of the spring. Both of the connected pipes are protected from bending or coming off by connection with the through-shaft of the pipe cover that covers the connection portion, and fitting between the pins and the pin holes, and are securely connected.

Furthermore, when folding, the tips of the pins are pushed down and turned toward one pipe. The pin slides on the guide surface of the pipe cover, and when it reaches the outside of the pipe cover, it protrudes to its normal state due to the bias of the spring. Furthermore, the other pipe and one pipe are folded by the rotation, and the other pipe is fixed as long as the rotation about the through axis is restricted.

〔Example〕

Hereinafter, the present invention will be explained with reference to an embodiment shown in the drawings. FIG. 1 is a front view of the device, FIG. 2 is a partially cutaway view of the device and seen in the direction of arrow A in FIG. 1, and FIG. The figure is a right side view of the pipe in a bent state, and FIG. 4 is a cutaway side view of the pin portion, the structure of which is as follows.

The pipes 1a and 1b are inserted along the inner surface of the pipe cover 2, which has a U-shaped cross section, with their opposing ends facing each other, and one pipe 1a is inserted into the pipe cover 2.
Fixed.

The pipe cover 2 consists of a semicircular part 2a having an inner surface of approximately the same arc as the outer periphery of the pipes 1a and 1b, and flat parts 2b and 2c connected to both sides of the semicircular part 2a. , 2c pipes 1a, 1b
Bearing parts 3, 3 are formed at positions outside the outer periphery, and a through shaft 4 is installed between the bearing parts 3, 3,
A pipe 1b is connected to the through shaft 4 via a hinge 5, and the pipe 1b is turned about 180 degrees from the state shown by the solid line in FIG. 1 to the state shown by the chain line in FIG. It can be bent and extended freely.

The base of a spring 7 having a pin 6 with a rounded end surface is fixed in the pipe 1b, and the pin 6 is in contact with the side surface of the pipe cover 2.
The pipe 1b is elastically supported toward the wall surface, and a pin 6 is provided on the side surface of the pipe cover 2 that contacts the wall surface and the outside of the pipe 1b corresponding to the pin 6 at the position shown by the solid line in FIG. 1 where the pipe 1b is linearly connected to the pipe 1a. There are pin holes 8 and 9 into which the pipe cover 2 is fitted, and a groove is provided on the inner surface of the pipe cover 2 from the edge of the flat part 2b toward the pin hole 9 along the path of the pin 6, on which the pin 6 slides when the pipe 1b turns. A shaped guide surface 10 is formed.

With the above-mentioned configuration, when the pipe 1b is butted against the turned pipe 1a and is in a straight state, the pin 6 is fitted into the pin holes 8 and 9 by the force of the spring 7 and does not escape unnecessarily. The pipe 1b is maintained in a straight connected state. When the pipe 1b turns as described above, the pins 6 protruding outside the side surface slide smoothly on the guide surface 10 provided on the inner surface of the pipe cover 2 and easily fit into the pin holes 8 and 9. Conversely, when bending the pipe 1b, press the tip of the pin 6 and insert it into the pin hole 9. Since the tip of the pin is rounded, it will slide and will not hinder the turning of the pipe 1b.
The pipe 1b can be turned and folded up to the pipe 1a.

[Effect of idea]

In the present invention, the ends of both pipes, which are connected with their opposing surfaces facing each other, are arranged along the inner surface of the semicircular part of the pipe cover, one pipe is fixed to the pipe cover, and the other pipe is fixed to the pipe cover. A pin hole is rotatably connected via a hinge to a through shaft installed between the bearing parts, and a pin hole is passed through the side wall of the other pipe and the pipe cover on the outside thereof, and a pin hole is provided inside the other pipe with respect to the pin hole. Since a pin is provided at the tip of the spring and a guide surface is formed on the inner surface of the pipe cover along the pin path when the pipe is turned, both pipes can be connected by a pipe cover that covers the connecting portion. The connection with the through-shaft and the fitting of the pin with the pin hole provide a secure and strong connection that is protected from bending or coming off.Also, on the work surface, when connecting by extension, the other pipe can be butted against one pipe. When folding, all you have to do is push down the pin on the other pipe and then turn it in the direction of one pipe, which is simple, easy, and efficient. Since the structure is extremely simple, it is easy to manufacture, and when it is folded, it can be fixed in the folded state as long as the rotation of the other pipe is controlled, making it suitable for transportation, making it extremely useful. It is.

[Brief explanation of drawings]

The drawings show an example of the implementation of the present invention. Fig. 1 is a front view of the device, Fig. 2 is a partially cutaway view of the device and seen in the direction of arrow A in Fig. 1, and Fig. 3 is a front view of the device. FIG. 4 is a right side view of the pipe in a bent state, FIG. 4 is a cutaway side view of the pin portion, and FIG. 5 is a sectional view showing an example of a conventional elongated state holding device. 1a, 1b...pipe, 2...pipe cover,
2a...Semicircular part, 2b, 2c...Plane part, 3...
Bearing portion, 4... Penetration shaft, 5... Hinge, 6... Pin, 7... Spring, 8, 9... Pin hole, 10... Guide surface.

Claims (1)

[Scope of utility model registration request] The ends of both pipes, which are connected with their opposing surfaces facing each other, are formed into a U-shaped cross section consisting of a semicircular part having an inner surface of approximately the same arc as the outer periphery of the pipe, and a flat part continuous to both sides of the semicircular part. Bearings arranged along the inner surface of the semicircular part of the pipe cover to fix one pipe to the pipe cover, and fixing the other pipe at positions outside the outer periphery of the pipe on both flat parts of the pipe cover. A pin hole is rotatably connected via a hinge to a through shaft installed between the parts, and a pin hole is passed through the side wall of the other pipe and the pipe cover on the outside thereof, and a spring is provided inside the other pipe with respect to the pin hole. A folding tent for a tent, characterized in that a pin is provided at the tip of the pipe cover, and a groove-shaped guide surface is formed on the inner surface of the pipe cover from the edge of the flat part toward the pin hole along the pin path when the pipe turns. A device to maintain the extended state of the connecting pipe.