JPH0413003Y2 - - Google Patents

Description

[Detailed explanation of the invention] (1) Field of industrial application This invention relates to a foldable net for ball practice equipment such as golf, tennis, and baseball. It can also be used for tents by covering it with waterproof cloth.

(2) Conventional technology Foldable ball game practice equipment for golf and other games used in relatively narrow open spaces such as courtyards and building rooftops usually have left and right pairs of quadrilateral side frames on the edges of a rectangular back frame with hinges, etc. A net was removably attached to a post that was attached via a.

(3) Problems to be solved by the invention However, although the left and right side frames can be folded over the back frame when not in use, such collapsible net props are quite large and bulky. However, it was difficult to store it in a small storage space, and it was difficult to carry it and move it easily.

(4) Means for solving the problem This invention consists of a pair of triangular side frames (see reference numeral 7 in Figure 1), which are made up of three straight frames rotatably connected via joint members; It consists of an upper frame and a lower frame (see reference numerals 8 and 9 in FIG. 1) forming a rear frame rotatably installed at the apex and rear bottom corners of both side frames via the joint members, and Each vertical frame, upper frame, and lower frame are provided with a joint member approximately in the center to make them flexible, and when each of these frames is folded from the joint member and the joint member, it becomes a bundle (Fig. 8, This is a folding support for a ball game practice equipment net (see Figure 9).

(5) Function This folding support for ball game practice equipment net has three pairs at one end when each straight frame, upper frame, and lower frame of both side frames are bent and folded from the joint member, and then folded in half from the joint member. It can be folded into a bundle with four pairs of joint members assembled at one end and four pairs of joint members assembled at the other end without using tools, and can be easily restored, and can be placed on the ground without using stakes or ropes. However, it becomes very stable.

(6) Embodiment FIG. 1 is a perspective view showing an embodiment of this invention. This foldable support for a ball game practice equipment net consists of three straight frames 1, 2, and 3 made of thin rectangular cylinders, each having a first joint member 4, a second joint member 5, and a third joint member each having a different shape. a pair of left and right substantially equilateral triangular side frames 7 rotatably connected via a member 6;
An upper frame 8 and a lower frame 9 made of the same material as the straight frame are rotatably constructed at the top and rear bottom corners of the both side frames 7 via a second joint member 5 and a third joint member 6, respectively. Consisting of The upper frame 8 and the lower frame 9 form a back frame.

each of the straight frames 1, 2, 3 and the upper frame 8 of the side frame 7;
The lower frame 9 is provided with a joint member 10 at its center and is bendable and can be folded in half, and each frame piece can be assembled into a bundle from each joint member and each joint member 10 without using tools while remaining connected. (See Figures 8 and 9)
It can be folded up and can be carried, for example, in a bag.

Furthermore, a slanted bracing 12 is installed near the corner of the connecting portion between the straight frame 3 and the lower frame 9. The upper end of the force bone 12 is rotatably connected to the straight frame 3, and the lower end is hook-shaped (not shown) so that it can be engaged with a protrusion (not shown) of the lower frame 9. This strong bone 1
2 is useful for preventing and reinforcing the side frame from collapsing.

As shown in FIG. 2, when the folding support is used, for example, as a golf practice tool, the folding support has a quadrilateral side frame net 13 excluding the corner portion of the third joint member 6 at the rear end, and the left and right side surfaces thereof. A rectangular back frame net 14 hanging down from the upper frame 8 extending between the frame nets 13 in the middle of the back part is hooked onto hooks (not shown) attached to each frame and attached. Further, a ball receiving hanging net 15 is attached slightly below the upper frame 8 of the back frame net 14.

Next, each joint member and joint member will be explained. The first joint member 4 is, as shown in FIG. 19 protrudes in the right angle direction, and a horizontally elongated hole 20 is provided at the lower end of the front half of the channel member 17. The tip of the straight frame 1 is fixed with rivets in the rear half of the channel member 17, and the lower end of the straight frame 2 is connected to the notch 16.
It is rotatably supported by one shaft part of an L-shaped shaft member 21 inserted into a long hole 20 in the inside, and is prevented from coming off by fixing a ring 22.

The other shaft portion of the shaft member 21 is inserted into a bearing 23 welded to the outer surface of the channel member 17, and a compression coil spring 24 is attached thereto. This first joint member 4
The straight frame 2 is rotatable about the shaft member 21 as a fulcrum, and the elongated hole 2 is provided to facilitate this rotational movement.
It will start sliding in 0. Incidentally, during assembly, the straight frame 2 abuts against the top plate 25 connected to the notch 16, so that the required angle is stably maintained.

The second joint member 5, as shown in FIG.
Although it has the same shape as the first joint member 4, the anchor hole 18, elongated hole 20, and shaft member 21 are omitted. The upper end of the straight frame 2 is rotatably connected by a shaft 26 in the notch 16, the upper end of the straight frame 3 is fixed with rivets inside the top plate 25, and the right end of the upper frame 8 is connected to the straight plate 19. They are rotatably connected by a shaft 26.

As shown in FIG. 1, the third joint member 6 has a relatively long vertical L-shape from the front, and the rear end of the straight frame 1 is fixed with rivets to the lower end of this vertical plate. The lower end of the frame 3 is rotatably connected, and the end of the lower frame 9 is rotatably connected to the horizontal plate portion. Note that the space between the connected straight frames 1 and 3 is the first when folded.
It has a length such that the joint member 4 and the second joint member 5 enter side by side (see FIG. 8).

As shown in FIG. 5, the joint member 10 is a substantially U-shaped cross-sectional groove-shaped member consisting of a back plate 27 and both side plates 28, and a pair of small semicircular recesses 29 are provided at the front edges of the side plates 28.
is provided. For example, at the center of the straight frame 1, the front end of the rear straight frame portion 1a is the joint member 10.
The rear end of the first half straight frame part 1b is inserted into the front part and connected to the front part so as to be rotatable upward by 180 degrees by a shaft 30.

At the rear end of the rotatable front half frame portion 1b of the straight frame 1,
A protrusion 32 having a horizontal hole 31 is arranged in series on the upper surface, and a T-shaped stopper 33 is attached to the front of the protrusion 32 by a stop band 34 so as to be slidable in the front and rear directions. When this stopper 33 is fitted into the recess 29 of the side plate 28, the rotation of the front half frame portion 1b is prevented, the rear half frame portion 1a and the front half frame portion 1b can be held in a straight line, and the stopper 33 is pulled forward to recess the front half frame portion 1b. When removed from location 29, the front half frame portion 1b can be rotated upwards by 180 degrees,
When it is rotated 180 degrees, it will overlap exactly with the rear frame portion 1b.

Each joint member 4, 5, in the folding strut
6 and the frame piece connected to the joint member 10 are shown in the direction of the arrow in FIG.

It is important to determine the orientation of the back plate 27 of the joint member 10 according to the bending direction of each frame (arrow direction in FIG. 1).

When the folding strut for the net is to be folded from each joint member and joint member 10, as shown in FIG.
While pulling it toward you and bending it, the second joint member 5 at the top corner is bent close to the third joint member 6 and folded.

Next, as shown in FIG. 7, the front first joint member 4 is bent close to the third joint member 6, arranged below the second joint member 5 (see FIG. 8), and the side frame 7 is The three joint members 10 of the straight frames 1, 2, and 3 to be formed are brought together at the opposite end, and each straight frame is folded in half. Furthermore, the upper frame 8 and the lower frame 9 are connected to the joint member 10.
When it is folded in half and the respective joint members are gathered at the right end, it is assembled into a bundle of rectangular prism-like bodies as shown in FIGS. 8 and 9.

This folded column is conversely connected to each joint member 4, 5,
6 and each joint member 10, it can be restored very easily.

FIG. 10 and FIG. 11 are a front view showing the state of use of another embodiment of this invention and a perspective view showing the joint member of the same. Fastener 41 to joint member 10 with 3
is detachably attached, the straight frame 2 and the straight frame 3 are fixed in a dogleg shape, and a roof-shaped waterproof cloth 43 having an entrance 42 is covered to serve as a house-shaped tent or a greenhouse. be. The fastener 41 consists of a receiving plate 44 bent at a required angle and a hook 45 fixed thereto.The hook 45 is hung in the recess 29 of the side plate 28 to support the upper half straight frame portion 3b. Be sure to remove it when folding.

Furthermore, this foldable support can be made of light aluminum alloy material to make it lightweight and portable, and can also be used for greenhouses by covering the roof with a transparent film, and for tents by covering the roof with waterproof fabric. be able to. In the case of a tent, an anchor can be driven into the anchor hole 18 of the first joint member 4 and fixed to the ground.

(7) Effects As described above, the prop for a ball game practice equipment net according to this invention consists of a pair of triangular side frames and a back frame that connects them, and each frame is rotatable from the joint member at the end. In addition, each frame can be folded in half from the joint member in the center, and when not in use, it can be folded into a prismatic bundle extremely easily and quickly without any tools, and can be stored in a bag. It is extremely convenient because it can be carried around, easily restored and reassembled, and can be erected stably without the need for ropes. When folded, it has a very low volume and can be placed in a small storage room or the trunk of a car, making it easy to store and move.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of this invention;
Fig. 2 is a perspective view showing the same state of use as above, Figs. 3 and 4 are exploded perspective views showing the first joint member and the second joint member, Fig. 5 is an exploded perspective view showing the joint member, and Fig. 6 is an exploded perspective view showing the joint member. 7 and 7 are explanatory diagrams showing the folding procedure, FIGS. 8 and 9 are plan views and side views showing the folded state, and FIGS. 10 and 11 are views of the use of other embodiments of this invention. It is a front view which shows a state, and a perspective view which shows a joint member same as the above. 1, 2, 3... Straight frame, 4... First joint member, 5
...Second joint member, 6...Third joint member, 7...
Side frame, 8... Upper frame, 9... Lower frame, 10... Joint member.

Claims (1)

[Scope of utility model registration request] A pair of triangular side frames formed by three straight frames rotatably connected via a joint member, and rotatably constructed at the apex and rear bottom corners of both side frames via the joint member. Each straight frame of the side frame, the upper frame, and the lower frame are each provided with a joint member approximately in the center so as to be flexible, and each of these frames is separated from the joint member and the joint member. A folding support for ball game practice equipment that becomes a bundle when folded.