JPH0620799U - Folding structure of tent frame - Google Patents

Abstract

(57) [Abstract] [Purpose] To make girders of tent frames with truss shape foldable. [Structure] Two truss-shaped girder members 10 and 11 having upper chord members 12 and 13 and lower chord members 14 and 15 are arranged so as to abut each other. Rotating shafts 25 and 26 are provided at the abutting ends of the beam members 10 and 11 at substantially right angles to the upper chord members 12 and 13 and the lower chord members 14 and 15, respectively. These rotating shafts 25,
Cylindrical bearings 27 and 28 for enclosing 26 are provided. Both bearings 27, 28 are connected by a connecting member 30 made of a plate-shaped body.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a folding structure for a frame of a large tent used for a simulated store or an event.

[0002]

[Prior art]

 As a conventional folding structure for a tent frame, in a relatively small tent, two pipe members are butted against each other, and one pipe member is provided with a receiving portion for receiving one end of the other pipe member, and this receiving portion is provided with the other pipe member. It was constructed by pivoting one end of the. However, there is no folding type large truss-shaped frame with upper and lower chord members, and two truss-shaped frames are connected using separate joints to connect the girder members. Etc., and one long truss-shaped skeleton having the required length was used to form the girder material. For example, FIG. 3 is an explanatory view showing an example of connection of a conventional girder member, in which a separate joint 40 is used, and fitting receiving portions 41 and 42 are provided above and below the joint 40. The ends of the upper chord members 12 and 13 and the lower chord members 14 and 15 of the girder members 10 and 11 were fitted and fixed to the fitting receiving portions 41 and 42 from both sides.

[0003]

[Problems to be solved by the device]

 In the conventional truss-shaped frame, when one long one is used, there is a problem that it is very inconvenient to handle due to its long length. Had a problem that its assembly and fixing were troublesome. Therefore, in order to solve these problems, the present invention aims to make two truss-shaped frames foldable.

[0004]

[Means for Solving the Problems]

 In order to solve the above problems, the present invention arranges two truss-shaped girder members 10 and 11 having upper chord members 12 and 13 and lower chord members 14 and 15 so as to abut each other. Rotating shafts 25 and 26 are arranged at substantially right angles to the upper chord members 12 and 13 and the lower chord members 14 and 15, respectively, at the butt ends of the rotating shafts 11 and 11, and bearings 27 and 28 that receive these rotating shafts 25 and 26, respectively. And a connecting member 30 for connecting the two bearings 27, 28 to each other.

[0005]

[Action]

 In the folding structure according to the present invention, both truss-shaped frames can be folded into two by rotating them about 90 degrees about each other about the rotating shafts. It can be easily extended.

[0006]

【Example】

 An embodiment will be described below with reference to FIGS. 1 is a front view of a main part of a folding structure of a tent frame according to the present invention, and FIG. 2 is a bottom view of FIG. Reference numerals 10 and 11 denote girder members of the tent frame, and each girder member 10, 11 is composed of upper chord members 12, 13 and lower chord members 14, 15 and a plurality of diagonal members 16, 17. ing.

Near the abutting ends of the two girder members 10 and 11, the base plates 20 and 21 are welded to the upper and lower chord members 12 and 13 and the lower chord members 14 and 15 at substantially right angles to the girder members 10 and 11, respectively. Arms 22, 22 and 23, 23 for fixing the rotating shaft are planted on these substrates 20, 21. The rotation shafts 25 and 26 are welded to the arms 22 and 22 so as to be suspended. Cylindrical bearings 27 and 28 are arranged so as to enclose the rotating shafts 25 and 26 inside, and these bearings 27 and 28 are connected by a plate-shaped connecting member 30. With this configuration, the rotating shafts 25 and 26 rotate within the bearings 27 and 28, so that the girder members 10 and 11 can be folded as shown by the arrows in FIG.

When the girder members 10 and 11 are butted to each other, the interval between the upper chord members 10 and 11 is made larger than the interval between the lower chord members 14 and 15. As a result, when the girder members 10 and 11 are linearly extended, the abutting portion with the girder members 10 and 11 is slightly sharpened upward. As a result, when this folded structure is actually assembled as a tent frame and used as a girder material, the girder materials 10 and 11 are held horizontally. If the upper chord members 12 and 13 of the girder members 10 and 11 and the lower chord members 14 and 15 of the lower chord members 14 and 15 are brought into contact with each other without a gap without such a structure, the girder members are not held horizontally. , It will hang down at the connecting part of both. The above structure was adopted to eliminate this problem. In addition, in the butting of the girder members 10 and 11, the upper chord members 12 and 13 and the lower chord members 14 and 15 may be abutted with each other so that a gap is provided in the upper portion. .

[0009] Furthermore, when the two girder members 10, 11 are extended, in order to hold and fix the girder members 10, 11 in a straight line, a fixing plate 33 made of a substantially rectangular plate-like body is used. The girder material 10 is welded to the side opposite to the side where the rotary shaft 25 is provided. As shown in FIG. 2, this fixing plate 33 is also extended to the side of the end portion of the girder member 11, and when the girder members 10 and 11 are extended, the end portion of the girder member 11 is fixed. It is possible to hold both girder members 10 and 11 in a linear shape by fixing them to the column with bolts and nuts. Further, in the above configuration, the girder members 10 and 11 were butted in a state of being pointed slightly upward, but in order to synchronize with this, a mounting made of a square pipe for mounting the upper chord member 12 thereon. The member 34 is provided on the fixed plate 33, and the fixed plate 33 is provided with a guide member 35 formed of a rectangular pipe that guides the lower chord member 14 so as to contact the lower chord member 14. Therefore, the placement member 34 and the guide member 35 are slightly raised to the right. Symmetrically to this, a mounting member 36 made of a square pipe for mounting the upper chord member 13 of the other girder member 11 is provided on the fixed plate 33, and contact is made along the upper surface of the lower chord member 15. A guide member 37 composed of a rectangular pipe is provided to guide the user. Therefore, the upper surface of the mounting member 36 and the lower surface of the guide member 37 are slightly lowered to the right. With this configuration, when the girder members 10 and 11 are extended, both girder members 10 and 11 can be held more horizontally. In this embodiment, the inclinations of the upper surface of the mounting member and the lower surface of the guide member are set to 2/100, respectively. This inclination can be appropriately set according to the weight of the girder material and the like. Here, the fixing plate 33 provided with the placing members 34 and 36 and the guide members 35 and 37 was welded to the girder material 10, but both girder materials 10 and 11 were extended as a separate body from the girder material 10. It is completely free to fix the fixing plate 33 to these with bolts, nuts or the like.

Although one embodiment has been described above, the substrates 20 and 21 do not necessarily have to be provided, and the arm portions 22 and 23 are directly attached to the upper chord members 12 and 13 and the lower chord members 14 and 15 of the girder members 10 and 11, respectively. May be planted. The arm portions 22 and 22 and the rotary shaft 25, and the arm portions 23 and 23 and the rotary shaft 26 are integrally formed into a substantially U-shape, and both ends thereof are upper chord members 10 and 11 and lower chord member 14, It may be welded to 15. The connecting member 30 for connecting the bearings 27, 28 is also one plate-shaped member, but may be connected by a plurality of arms. The bearings 27 and 28 are also provided so as to cover almost all of the rotating shafts 25 and 26, but it is not always necessary to provide them all over the rotating shafts 25 and 26. It may be provided.

[0011]

[Effect of device]

 Although the embodiments have been described above, the present invention makes it easy to assemble the truss-shaped tent frame by making it foldable, and it is easy to put away after disassembling it without taking up space. It is very convenient to handle. As described above, the present invention has a great effect.

[Brief description of drawings]

FIG. 1 is a front view of an essential part of the present invention.

FIG. 2 is a bottom view of FIG.

FIG. 3 is an explanatory diagram of a conventional girder material for a tent frame.

[Explanation of symbols]

 10, 11 Girder material 12, 13 Upper chord material 14, 15 Lower chord material 16, 17 Diagonal material 20, 21 Substrate 22, 23 Arm portion 25, 26 Rotating shaft 27, 28 Bearing 30 Connecting member

Claims (1)

[Scope of utility model registration request] 1. Two truss-shaped girder members (10) (11) having upper chord members (12) (13) and lower chord members (14) (15) are arranged so as to abut each other, and these girder members ( The pivot shafts (25) and (26) are attached to the butt ends of (10) and (11), respectively, to the upper chord member (12) (13) and the lower chord member (1).
4) The bearings (27) and (28), which are arranged substantially at right angles to the rotating shafts (25) and (26) and which respectively receive the rotating shafts (25) and (26), are provided respectively.
7) A tent frame folding structure in which (28) are connected by a connecting member (30).