JP2603773Y2 - Tent frame folding structure - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a folding structure of a tent frame, and more particularly to a structure in which a linear frame portion can be folded in two, and is used for a leg portion of a tent frame and a reinforcing frame member.

[0002]

2. Description of the Related Art A conventional folding structure is disclosed, for example, in Japanese Utility Model Application Laid-Open No. 4-1961 filed by the present applicant. In this invention, both bone members are rotatable at hinge portions. When the two bone members are extended linearly, the ends of the two bone members abut each other to maintain the two bone members in a linear shape, and further, the linearized both bone members are bent. The lock mechanism is provided separately from the hinge.

[0003]

In the conventional folding structure of a tent frame, since the locking mechanism is formed separately from the hinge, both bone members are locked after being extended linearly. Therefore, two steps of a bone member extension operation and a lock operation are required. Therefore, the present invention improves the conventional two-stage operation,
It is an object of the present invention to provide a structure in which both bone members can be fixed and locked while simultaneously extending both bone members linearly.

[0004]

In order to solve the above-mentioned problems, according to the present invention, one end of one bone member 13 is provided with a receiving portion 21 for receiving one end of the other bone member 17, and this receiving portion is provided. One end of the other bone member 17 is rotatably mounted on a shaft 21, and a locking pin 24 is slidably attached to the other bone member 17 in the vicinity of the shaft mounting portion in the longitudinal direction of the bone member 17. And a biasing means 25 for constantly biasing the locking pin 24 in the direction of the shaft attachment portion, and a notch for engaging the locking pin 24 when the two bone members 13 and 17 are linearly extended. A receiving portion 28 is provided on the receiving portion 21.

[0005]

A locking pin is provided on a cut receiving portion formed in a receiving portion of one bone member so as to be slidable on the other bone member and urged in a direction of a shaft attachment portion. In engagement, the two bone members 13, 17 are perfectly fixed in a straight line.

[0006]

Embodiments will be described below with reference to the accompanying drawings. 1 and 2 of the accompanying drawings illustrate an embodiment of the present invention.

FIG. 1 is an explanatory perspective view of an embodiment of the present invention, and FIG. 2 is a front view thereof. A receiving portion 21 having a U-shaped cross section is welded to the lower end of the bone member 13 in the drawing. The left end in the figure of the other bone member 17 is axially attached to an appropriate position of the receiving portion 21. A guide frame 22 having a substantially U-shaped cross section is provided in the vicinity of the shaft attachment portion of the bone member 17. Elongated holes 23 are provided in the upright portions of the guide frame 22, respectively. These long holes 23, 2
A locking pin 24 having a length longer than the interval of 3 is spanned between the elongated holes 23, 23, and a coil spring 25 is provided as a biasing means for biasing the locking pin 24 toward the shaft attachment portion.
The locking pin 24 is always drawn toward the shaft attachment portion by the coil spring 25. When the bone member 17 is rotated in the direction of arrow E to make the two bone members 13 and 17 linear,
A cut receiving portion 28 is provided at a position of the receiving portion 21 corresponding to the locking pin 24. A catch portion 30 is formed in the cut receiving portion 28 so that the locking pin 24 does not come off. When the locking pin 24 is to be removed from the cut receiving portion 28, the locking pin 24 can be removed by pulling the locking pin 24 downward by hand and removing the locking pin 24 from the hook portion 30.

[0008] Figure 3 is a structure different from the embodiment of the present invention
FIG. 4 is a front explanatory view showing a folding structure composed of
This figure shows a state in which the folded structure is used as a reinforcing brace for connecting the leg 10 and the cross beam 11. Cross beam 1
1 can be folded in the direction of the leg 10, and accordingly, this folding structure can also be folded in the direction of arrow D in the figure. A guide 14 having a U-shaped cross section is welded to one end of the bone member 13. The upper surface of the guide 14 serves as a stopper 15. The other bone member 17 is attached to the tip of the guide 14.
Is pivotally mounted by the pin 18. The connection of the bone member 13 to the cross beam 11 and the connection of the bone member 17 to the leg 10 are also rotatable.

FIG. 4 is a perspective view of the main components of the folding structure shown in FIG. 3 , wherein FIG.
(B) illustrates the bone member 17. A guide 14 having a U-shaped cross section is welded to the left end of the bone member 13 in the drawing. The upper surface of the guide 14 serves as a stopper 15. The other bone member 1
A bulging portion 20 is formed in a portion near the shaft attachment portion of No. 7. When the two bone members 13 and 17 extend linearly, the bulging portion 2
0 engages and is fixed with the upright portions 16, 16 of the guide 14 facing downward. This fixing is surely performed by frictional resistance between the guide 14 and the bulging portion 20. like this
3 and 4 show an embodiment of the present invention and FIG.
However, as in the present invention, both bone members 13, 17 are extended.
At the same time, both bone members are fixed with one touch
Things.

Although the embodiments and the like have been described above, the bone member may be either a plate material or a pipe material, and various cross-sectional shapes such as a circle and a square can be used. The receiving part may not be of a U-shaped cross section,
Any shape may be used as long as it can receive one end of the other bone member. In the above embodiment, the locking pin is slid in the long hole of the guide frame.
Instead of providing the guide frame, a long hole may be directly formed in the bone member, and the locking pin may be slid in the long hole to urge in the direction of the shaft attachment portion. As the urging means, a coil spring is used, but other various elastic members may be used.

[0011]

According to the present invention having the above-described structure, the tent frame can be linearly extended and, at the same time, fixed in a straight line with one touch, and can be very easily maintained in the extended state. Therefore, the folding structure of the present invention can be assembled and locked at the same time as the other tent framework is assembled. The folding structure of the present invention can be used in various places such as legs and braces of a tent frame, and its application is wide. As described above, the present invention has a great effect.

[Brief description of the drawings]

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

FIG. 2 is an explanatory front view of a main part of the embodiment of the present invention.

FIG. 3 shows a front view of a folding structure having a configuration different from that of the present invention .
FIG .

FIG. 4 shows the main components of the folding structure shown in FIG .
It is a perspective view .

[Explanation of symbols]

 13, 17 Bone member 21 Receiving part 22 Guide frame 23 Long hole part 24 Locking pin 25 Coil spring 28 Cut receiving part 30 Hook part

Claims (1)

(57) [Scope of request for utility model registration] An end of one bone member (13) is connected to the other bone member.
A receiving portion (21) for receiving one end of (14) is provided.
One end of the other bone member (17) is rotatably mounted on (21),
The other bone member (17) has a locking pin near its shaft attachment.
(24) is provided slidably in the longitudinal direction of the bone member (17), and furthermore, biasing means for constantly biasing the locking pin (24) in the direction of the shaft attachment portion.
(25) was provided, and when the two bone members (13) and (17) were linearly extended, a cut receiving portion (28) with which the locking pin (24) was engaged was provided in the receiving portion (21). A folding structure of a tent frame, characterized in that: