JPS60255574A - Folding sleigh - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a bag that can be folded in a simple manner and is suitable for transportation and storage.

The sleds known in the prior art are virtually disassembleable, and even if they can be disassembled, the process is labor intensive and time consuming.

In the disclosure of inventions prior to the present invention by the same inventor, a collapsible sled has been suggested, which is constructed from two identical frames made of cheap, preferably aluminum tubes. It was something like that. These seven frames were connected by two degree rivets so that they could be opened by rotating the frames about an axis passing through the rivets.

A piece of fabric was slid over the two frames, which served as a seat and as a device to limit the opening of the sled. Although this method improved the efficiency of disassembly and assembly, it did not have sufficient stiffness because it had no reinforcing elements, and it required the use of expensive materials. . Furthermore, the above-mentioned seat had the same width as the sitting part and the sliding part, which resulted in insufficient stability. The main disadvantage of this known folding seat is that it is not possible to fold the seat while driving (particularly while jumping) and that the seat part may be moved forward and backward. Ta.

Problem to be Solved by the Invention The object of the present invention is to provide a collapsible product which can be folded into a suitable size for transportation and storage in a simple process, and which has a high degree of stability and rigid structure. The goal is to provide the following. At the same time, the sash is prevented from undesired folding, the fabric is prevented from moving forwards and backwards, and the structure is also suitable for the use of inexpensive materials, such as wood.

Means for Solving the Problems The foldable sled of the present invention will be explained in detail through one embodiment with reference to the drawings.

The foldable frame of the invention consists of two identical frames R and R', in this embodiment made of wood, having a curved part 1 and a straight part 2. Frames R and R' are connected by rivets z and 2' arranged on a common axis parallel to the longitudinal axis of the sash.

The holes for the rivets z and Z' are drilled in the upper parts of the frames R and R' very close together, so that when the rivets are widened the distance between the upper parts of these frames is smaller than the distance between the lower parts of the frame, making it more stable. These frames are made by bending square cross-section timber or by laminating thin sheets.

In both cases, one end of the lower part of this frame is machined in such a way that when the sash is unfolded there is one flat surface above the ground (section line A-A in Figures 4a and b). . The sliding parts of the frame are protected by rust-proof steel strips.

Parts 1 and 2 are connected on the front side with regular wood screws and on the back side with double wood screws. The ends of parts 1 and 2 are protected by tin caps with holes for these screws. Said screw passes through the washer 4 of the reinforcing rod 5 and forms a rotatable connection between this rod 5 and the frames R and R'.

These reinforcing rods, placed in the rear part of the sash, carry a metal rod 6 with a notch into which the cog of the lever 7, biased by the spring 8, can fall. It consists of a wooden tube 5 with an interior. The lever 7 has a ball on its outer end and is rotatable around the pin 9. The washer 4 is made in one piece with a protective metal cap or is connected to this cap by welding. The lower part of the reinforcing rod is protected 9 by a metal cap 10 with a hole for the rod 6. The reinforcing rod 5 placed in the front part of the rod is the same as the rod placed in the rear part, except that there is no lever 7, no spring, and no notch for locking pin and rod 6. They are different. Alternatively, a spring 11 is arranged at the upper end inside the wooden tube 5, which spring is compressed during insertion over the entire length of the rod and helps to extend the entire reinforcing rod 5 when the locking mechanism is released, i.e. This will help fold the paper.

The rod 6 has at its lower end a groove that accommodates a special screw 130 and a plate element, which plate element is used to rotatably connect the rod 6 and the bolt 13 by means of a rivet 12. The bolt 13 passes upwardly from the bottom of the frames R and R' and at the same time serves as a base for the rust-free steel strip 3 and the lower end of the reinforcing rod 5 when the slat is unfolded, i.e. in use. The plate 14 that is connected is connected.

A fabric is slidably fitted over the parts 2 of the frames R and R' and serves as a seat. The width of the fabric seat is such that the fabric is fully stretched when the sash is fully unrolled.

This rearward and forward movement of the seat is prevented by rods 5 for reinforcement and for connection of the frames R and R'.

The reinforcing rod 5 connects the upper part of the frame R and the lower part of the frame R', and vice versa.

When the rod is folded, the reinforcing rod 5 has its maximum length, i.e. the rod 6 is pulled out of the wooden tube 5 to the maximum extent, and the rod 6 is long enough so that it cannot be pulled out of the tube. have. In preparation for use, on the other hand, the user pushes aside the upper parts of the frames R and R', and this movement opens the ribs and shortens the reinforcing rod 5, i.e. the rod 6 enters the tube φ. When the user fully unfolds the sash, the sash locks at the moment it is fully opened. Even if the user neglects to operate the seat 5, the self-locking mechanism will activate the moment the user sits on the seat.

The self-locking mechanism operates in the following manner. The rod 6 is inserted into the wooden tube 5 until the lower end of the tube 5 is located above the plate 14. At this moment, the cog of the lever 7 is biased by the spring 8 and fits into the notch of the rod 6. The sled is now locked and cannot be folded back again before the lever 7 is pulled out, which is why it has a ball at its outer end. So,! When 7 is unfolded and the locking mechanism is activated, a spring 11 located in the front part within the reinforcing rod is compressed. When folding the sheet again, the balls of the levers 7 of both reinforcing rods 5 must be pulled, and the springs 11 pull out the rods 6'i 2.3 cm. This is sufficient to deactivate the locking mechanism, so that the folding operation can then be completed manually.

In the embodiments described above, the collapsible sash of the invention is made of wood. But there are many other options.

For example, the sash can be made of aluminum tubing, in which case only a pair of reinforcing rods is sufficient. These rods are a combination of the front rod and rear rod described above. In that case, the connection between the frame and the upper part of the rod passes through the fabric and prevents it from moving backwards and forwards. It is therefore clear that the embodiments described above are merely for illustrative purposes only and are not intended to limit the scope of the invention in any way.

[Brief explanation of drawings]

Figure 1 is an overall view of the sled of the present invention in use, Figure 2a is a top view of the sled of the present invention, - Figure 2b is a side view of the same, Figure 2c is a front view of the same, and Figure 2d is a sliding view of the same. Fig. 3 is an overall view of the slat when folded; Fig. 4a is a diagram showing one of the seven frames of the folding sash; Fig. 4b is the sliding part. FIG. 5 is an overall view of the reinforcing rods arranged on the rear part of the slats, and FIG. Overall view of the reinforcing rods in place, Figure 7 is a similar view to Figure 6 when the rod is folded (the reinforcing rod is extended), and Figure 8a is the reinforcement rod fixed. the lower part of the sash where the bolt is located,
Overall view, Figure 8b is a sectional view of the same part, Figure 9a is an overall view of the reinforcing rod placed in the rear part of the sled, Figure 9b is a vertical sectional view of the same rod, Figure 10 is the front of the sled. FIG. 3 is an axial cross-sectional view of a reinforcing rod arranged in the section; 1... Curved part 2... Straight part R, R/-... Frame 2, 2/... Rivet 4.
...Washer 5...Wooden tube 6, "Oyde" 7...Lever 8...Spring 9...Pin 11...Spring 12...Rivet 13...
Bolt Patent Applicant Georges Labatik Patent Attorney Akira Aoki Patent Attorney Kazuyuki Nishidate Patent Attorney Kyosuke Nakayama Patent Attorney Akira Yamaguchi Masaya Nishiyama

Claims (1)

Claims: 1. A fabric rotatably connected by rivets (z) and (Z') located on a common axis, which is the longitudinal axis of the sash, and slid onto it to form a seat. In a collapsible sled consisting of two identical frames (R) and (R') with
R/) consists of a curved part (1) and a flat part (2), and these parts are the washer (4) of the reinforcing rod (5).
This reinforcing rod forms a rotatable connection between this rod (5) and the upper part of the frames (R) and (R'), and this reinforcing rod (5) ) is an inset extendable frame (
A folding sled characterized in that the upper part of the frame (R) and the lower part of the frame (R') are connected, and the upper part of the frame (R/) and the lower part of the frame (R) are connected. 2. A reinforcing rod (5) is attached to the tube (5) with a rod (6) therein, rotatably mounted in the tube (5) by a pin (9) and secured by a spring (8). The tube (5) has a notch in the vicinity of its inner end corresponding to the cam of the lever (7) against which the rod (6) is pushed and is pulled by hand to release the rod (6). It has a part of the lever (7) projecting outwards, the upper end of the tube (5) is closed by a cap with a washer (4) at right angles to it, and the lower end of the rod (6) has a special screw thread. It has a groove into which the plate element (13) is inserted, and this plate element has a rivet (12).
Claim 1, characterized in that the special screw (13) passes through the lower part of each of the seven frames (R) and (R').
Folded miso soup as described in the section. 3. There is another pair of reinforcing rods (5) consisting of a tube (5) and a rod (6) inside, this is a special screw (13)
is connected to the lower part of the frame by a groove in which a plate element enters, which plate element is connected by a rivet (12);
The tube (5) is connected to the upper part of the frame by a cap with a right angle washer (4) on it and a screw passing through it, and a spring (11) is attached to the upper part of the tube (5).
3. The folding miso according to claim 2, wherein the spring is compressed when the reinforcing rod (5) has a minimum length.