JP2005278895A - Fall prevention device and soccer goal with the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fall prevention device that operates only when a fall is anticipated and is not obstructive normally and is sensitive enough to support a gentle fall due to wind or the like, and a safe soccer goal that is prevented from falling down. <P>SOLUTION: The fall prevention device includes a body provided at the bottom portion of an object to be prevented from falling down and comprised of rod leg members and an oblong storage case to longitudinally slidably store the leg members, an urging means to always urge the leg members in the direction of projecting from the storage case, an engagement means to restrain the leg members from projecting out of the storage case. The engagement means has a stopper, the bottom portion of the stopper contacts an installation surface, the head portion is engaged with an engagement portion provided in the leg members and restrains the leg members from sliding normally. When the body inclines and the rear portion of the body rises, the head of the stopper is disengaged from the engagement portion and projects from the front end of the storage case. A soccer goal is provided with the fall prevention device. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a soccer goal, a furniture, an electric appliance such as a television, a device for preventing a fall caused by a wind or an earthquake such as a locker, and a soccer goal that is difficult to fall.

  One effective measure to prevent falls caused by wind or earthquake is to increase the substantial floor area so that it can sufficiently cope with the movement of the center of gravity due to rolling. For example, it is very useful for preventing a fall to attach a leg projecting laterally from the main body along the floor surface. However, such a leg tends to be caught on the leg and cause it to fall, so it is not preferable that the leg is always overhanging.

  In view of this, some ideas have been proposed so that the legs can be freely inserted and removed, and are extended only when necessary, such as an earthquake. For example (see Patent Document 1), as shown in FIG. 8, the fall prevention device 54 is attached to the bottom of the furniture 50, and the two rod-like leg members 52 are required from the fall prevention device 54. Only when it is overhanging forward.

  The proposed fall prevention device 54 is configured as follows. That is, as illustrated in FIG. 9, the leg member 52 pushed by the coil spring 64 is accommodated in the case 66, but normally, the leg member 52 is attached to the claw-like engagement portion 60 that hangs down from above. The protrusion-shaped engaging part 62 provided on the upper part of the engagement is engaged. For this reason, even if it is urged by the coil spring 64, the leg member 52 is prevented from sliding and remains in the case 66. The claw-like engaging portion 60 is connected to the bottom of a box-like rocking body 56 installed substantially horizontally, and the rocking body 56 is rotatable around a shaft body 70. In addition, a spherical rolling element 58 is accommodated in the oscillating body 56 in a recess 68 on the claw-like engagement portion 60 side from the shaft body 70.

  Then, if the rolling element 58 rolls in response to vibrations such as an earthquake and moves beyond the shaft body 70 from the claw-like engagement portion 60 side, the rolling element 58 swings due to the weight of the rolling element 58 as shown in FIG. The moving body 56 rotates and tilts, and the claw-like engaging portion 60 is pulled up. For this reason, the engagement with the projecting engagement portion 62 is released, and the leg member 52 starts to slide and moves until it protrudes from the front end outlet (not shown) of the case 66. As shown in FIG. 8, if the fall prevention device 54 is attached to the bottom of the furniture 50, the leg member 52 can be automatically projected forward when an earthquake or the like occurs.

  According to the present proposal, when an earthquake or the like occurs, the leg member 52 can be overhanged to prevent the fall, and the leg member 52 is normally housed in the fall prevention device 54 so that it does not get in the way. It is very convenient. However, the fall prevention device 54 is sensitive to relatively strong and rapid vibration such as an earthquake, but is insensitive to the case of falling slowly due to wind or the like, and the extension of the leg member 52 is delayed. There was a fear. In order for the rolling element 58 to jump out of the recess 68, the rolling element 58 must be swayed considerably violently or the oscillating body 56 must be tilted considerably. In addition, the time required for the rolling element 58 to move within the oscillating body 56 and the time required for the oscillating body 56 to sufficiently tilt are required.

  In another proposal described in FIG. 11 (see Patent Document 2), a pendulum 72 is used for releasing the engagement between the claw-like engaging portion 60 and the protrusion-like engaging portion 62. The claw-shaped engaging portion 60 is formed at one end of an inverted U-shaped arm 74, and the arm 74 is suspended by a pin 84 so as to be rotatable. When the pendulum 72 arranged alongside the arm 74 swings due to an earthquake or the like and hits the side of the arm 74, the arm 74 rotates around the pin 84. Then, the claw-like engagement part 60 is pulled up, the engagement with the protrusion-like engagement part 62 is released, and the leg member 52 starts to slide.

  The proposed fall prevention device 55 is also very convenient. However, in order for the pendulum 72 to swing sufficiently, it must still be swayed quite violently, and the sensitivity to blunt falls caused by wind or the like is low and cannot be an appropriate preventive measure.

  On the other hand, the occurrence of an accident due to the fall of a soccer goal has become a major problem in recent years, and an effective prevention measure is awaited. A soccer goal has a high center of gravity and is biased toward the front (ground side), so it can easily fall over if it receives a strong wind from behind. In addition, it is very heavy, so it is very dangerous if you lay it on the floor.

  Conventionally, in order to prevent a soccer goal from falling, a weight such as a sand bag was placed on the pipe at the bottom, or a pile was hit to stop. However, in order to use the athletic ground for multiple purposes, it is often necessary to move the soccer goal temporarily, and it is cumbersome to carry out these measures each time, and it tends to be forgotten and not thoroughly enforced. there were. In addition, as a measure against pile driving, there was a problem that the piles were easily struck out because the piles were always hit at the same position while repeatedly moving and restoring the soccer goal.

  Therefore, a soccer goal has been proposed (Patent Document 3) in which a fall prevention tool (leg) projects forward. As shown in FIG. 12, two rod-shaped tipping prevention tools 92 are projected and fixed from both sides of the bottom 90 of the soccer goal 88 toward the front. And the fall prevention tool 92 is bent gently and the tip part is buried in the ground.

This soccer goal 88 is very effective in preventing the vehicle from falling forward. However, if the fall prevention tool 92 is not sufficiently embedded, the player may be exposed during the intense movement of the player, possibly causing injury. On the contrary, if it is buried deeply, it must be dug up or buried every time the soccer goal 88 is moved, which is very inconvenient and may damage the ground.
JP 09-023946 A JP 09-075159 A Japanese Utility Model Publication No. 55-075358

  SUMMARY OF THE INVENTION In view of the above-described problems of the prior art, the present invention provides a fall prevention device that can quickly respond to a gradual fall caused by a wind or a mild earthquake, and prevents a fall safely and reliably. The goal is to provide a soccer goal that can be used.

  The fall prevention device of the present invention is used by being provided at the bottom of an object to be prevented from falling, and is composed of a rod-like leg member and a horizontally long housing case that slidably accommodates the leg member in the longitudinal direction. And an urging means for constantly urging the leg member in a direction protruding from the housing case, and a locking means for preventing the leg member from sliding and protruding from the housing case. The stop means detects the floating of the rear part of the main body due to the tilting of the main body and releases the inhibition of the slide. By this release, the leg member slides until it protrudes from the front end of the housing case.

  In particular, the locking means in the above-described overturn prevention device includes a stopper disposed below the rear part of the main body, the bottom of the stopper is in contact with the installation surface, and the head of the stopper normally contacts the leg member. When the main body is tilted and the rear part of the main body rises, the head of the stopper is engaged with the engaging part. The leg member is free to slide by being detached.

  Alternatively, another fall-preventing device of the present invention is used by being provided at the bottom of the fall-preventing target object, and is a horizontally long housing that slidably accommodates a rod-shaped leg member and the leg member in the longitudinal direction. When the accommodation case installed substantially horizontally is tilted and one end thereof floats, the leg member slides inside the accommodation case by its own weight and protrudes from the other end.

  Alternatively, another fall-preventing device of the present invention is used by being provided at the bottom of the fall-preventing target object, and is a horizontally long housing that slidably accommodates a rod-shaped leg member and the leg member in the longitudinal direction. A main body composed of a case, an urging means for urging the leg member in a direction protruding from the housing case, and a detection means for detecting the floating of the rear of the main body due to the main body tilting. The urging means is actuated when the tilting of the rear part of the main body is detected and the leg member slides until it protrudes from the front end of the housing case.

  In particular, these fall prevention devices are characterized in that a roller for assisting the slide of the leg member is mounted on the leg member or disposed in the housing case.

  In addition, the soccer goal of the present invention is characterized in that any one of the above-mentioned several fall prevention devices is provided on the bottom pipes on the left and right sides.

  According to the fall prevention device of the present invention provided to be used at the bottom of the fall prevention target object, when the fall prevention target object is tilted forward and falls due to an earthquake or strong wind, the rising of the rear part is detected. Since the leg member is quickly advanced forward, the fall can be prevented in advance. In addition, since the leg member is always drawn into the housing case, it is convenient for practical use without being in the way.

  The fall prevention device of the present invention according to claim 1 is a mechanism in which the slide of the leg member that is constantly biased is restrained by the locking means, and this restraint is released when the floating of the rear part of the main body is detected. Detecting the floating of the rear part of the main body is more accurate and easier than detecting vibration and tilt angle. For this reason, even if it falls gently by wind etc., a leg member can be drawn out in the very early stage, and it can prevent falling reliably. Further, the locking means and the detection means can be freely selected and combined in accordance with the shape and application of the fall prevention target object.

  In particular, according to the overturn prevention device according to claim 2, the locking means includes a stopper disposed below the rear part of the main body, and the stopper directly detects the floating of the rear part of the main body and immediately releases the inhibition. Therefore, the structure is simple, there are few malfunctions, the sensitivity is good, and it is possible to prevent the fall.

  In addition, since the fall prevention device according to claim 3 has a simple structure consisting only of the leg member and the housing case, it can be reduced in size and weight, and can be effectively used to prevent the fall of a relatively small fall prevention target object.

  Further, the fall prevention device according to claim 4 is a mechanism for operating the slide biasing means of the leg member when the floating of the rear portion of the main body is detected. It is more accurate and easier than detecting. For this reason, even if it falls gently by wind etc., a leg member can be drawn out in the very early stage, and it can prevent falling reliably. Further, since the locking means for suppressing the slide of the leg member is omitted, the configuration becomes simpler and the size can be easily reduced. Further, by adopting an electrically actuating biasing means, not only the leg member can be extended but also retracted and accommodated.

  Furthermore, in these fall prevention devices, by employing a roller for assisting the slide of the leg member, the roller can be fed out more quickly, and the fall prevention effect can be further enhanced.

  In addition, according to the soccer goal of the present invention, a fall prevention device that can sufficiently cope with a gentle fall due to wind or the like is provided, and even when it is slightly tilted forward, the leg members are quickly drawn forward from both sides of the bottom. As a result, the fall due to earthquakes and strong winds is surely prevented. In addition, since the leg member is normally drawn into the housing case and is not exposed, the leg member is not stumbled and injured, and a game or practice can be performed safely.

  DESCRIPTION OF EMBODIMENTS Embodiments of a fall prevention device according to the present invention will be described in detail with reference to the drawings.

  In FIG. 1, an example of the preferable embodiment of the fall prevention apparatus 10 of this invention is shown. The fall prevention device 10 always urges the main body 16 including a rod-like leg member 12 and a horizontally long housing case 14 that slidably accommodates the leg member 12 in the longitudinal direction, and the slide of the leg member 12 forward. Coil spring 18 (biasing means 20) and a stopper 22 (locking means 21) that is disposed below the rear part of the main body and prevents the leg member 12 from sliding forward. . The front in the present invention means the direction D in which the leg member slides and protrudes from the housing case 14, and the fall prevention device 10 is a fall prevention object (not shown in the figure) with the expected fall direction as the front. ) Is used in preparation.

  In addition, the rod-like leg member in the present invention means a leg member that is long in one direction, and may be a hollow pipe. The cross-sectional shape is not particularly limited, and may be various polygons such as a circle, an ellipse, and a rectangle, an L shape, an H shape, and the like, and an appropriate shape is selected according to the application. The entire leg member may be housed in the housing case, or may be housed while leaving a part exposed.

  The coil spring 18 is sandwiched between a hook-shaped protrusion 19 provided in the middle of the leg member 12 and a coil spring locking portion 27 locked in the rear portion 142 of the housing case 14. FIG. 4A shows a state in which the coil spring 18 is compressed rearward and the rear end 122 of the leg member 12 is locked by the stopper 22, and FIG. Shows a state in which the leg member 12 is slid until it protrudes from the front end 141 of the housing case 14 through the protrusion 19.

  FIG. 2 corresponds to FIG. 1 (a) and shows the vicinity of the stopper 22 in a normal state, but the bottom 222 of the straight rod-like stopper 22 is formed in a trapezoidal shape and is in contact with the installation surface 24, and the round head 221 is It is engaged with an engaging portion 26 provided on the leg member 12. For this reason, the slide of the leg member 12 biased by the compressed coil spring 18 is suppressed.

  The stopper 22 is accommodated in a stopper housing 28 provided below the rear portion 162 of the main body 16, but is not fixed to the stopper housing 28. Further, an insertion hole 40 through which the bottom portion 222 of the stopper 22 can go up and down is provided at the bottom portion of the stopper housing 28. Therefore, even if the rear portion 162 of the main body 16 is lifted and the stopper housing 28 is lifted, the stopper 22 remains on the installation surface 24 and comes out from the insertion hole 40 downward.

  On the other hand, a hook-shaped protrusion 32 is provided on the abdomen of the stopper 22, and a ring-shaped drop-preventing frame 34 sized so that the straight bar-shaped portion of the stopper 22 is inserted but the protrusion 32 is caught is provided below the protrusion 22. 16 is suspended from 16. For this reason, the above-described movement of the stopper 22 trying to come out of the insertion hole 40 is allowed only until the protrusion 32 is caught by the fall prevention frame 34. In addition, a coil spring 30 that holds the stopper 22 and is compressed between the housing case 14 and the protrusion 32 is disposed. The restoring force of the coil spring 30 is used to urge the stopper 22 to come out and to reliably release the engagement between the engaging portion 26 of the leg member 12 and the head portion 221 of the stopper 22. . However, the coil spring 30 is not necessarily required for the present invention. Even if the coil spring 30 is omitted, it is possible to get out of the insertion hole 40 only by the gravity drop due to the weight of the stopper 22 itself. What prevents the lowering of the stopper 22 is the restoring force of the coil spring 18 acting from the side through the engagement with the engagement portion 26. For this reason, the descent of the stopper 22 can be performed more smoothly by devising the ease of slipping with respect to the force from the side, such as forming the inclined surface by tapering the head portion 221 of the stopper 22.

  FIG. 3 shows a state in which the rear portion 162 of the main body 16 is lifted, the stopper housing 28 is lifted by Δh from the installation surface 24, and the stopper 22 is pulled out downward until the hook-shaped protrusion 32 comes into contact with the fall prevention frame 34. At this time, since the head 221 of the stopper 22 is completely detached from the engaging portion 26 of the leg member 12, the leg member 12 biased by the coil spring 18 starts to slide forward, and FIG. As shown in FIG. 9, the housing case 14 moves until it protrudes from the front end 141.

  That is, when the toppling prevention target object tilts forward due to strong wind or the like and the main body rear portion 162 rises by Δh, this is promptly detected, and the slide restraining of the leg member 12 is released and the leg member 12 is urged and slid. And can be protruded from the front end of the housing case 14. For this reason, the leg member 12 can be projected ahead of the fall prevention target object at the very initial stage of the fall, and the fall can be surely prevented. The stopper 22 detects the floating of the rear portion 162 of the main body by falling out of the insertion hole 40 of the stopper housing 28, and at the same time, disengages the head portion 221 and the engaging portion 26 to prevent the leg member 12 from sliding. It is a thing to cancel. Since the detection and the cancellation of the suppression are executed simultaneously in one operation, it is possible to avoid the occurrence of a malfunction due to a detection result transmission trouble or the like that is likely to occur when a separate detection unit is provided.

  The shape of the engaging portion 26 is not particularly limited as long as the head portion 221 of the stopper 22 is hooked on the protruding portion and the urged slide of the leg member 12 is suppressed. For example, a protrusion such as a pin may be simply provided on the side surface of the leg member 12, and the stopper 22 may be hooked on the side of the protrusion to prevent the leg member 12 from sliding. Further, the height of the protruding portion of the engaging portion 26 is made larger than the gap width between the coil spring 18 and the inner wall of the housing case 14. Although different depending on the length and thickness of the leg member 12, in general, the engaging portion 26 can be designed with a height of several mm as a lower limit. If the length of the fall prevention device is 1 m, the height of the protruding portion of the engaging portion 26 is 5 mm, and the leg member 12 is extended when the main body rear portion 162 floats 5 mm, the inclination angle at that time is about 0. .2 °. Compared with the conventional fall prevention device that operates by detecting the tilt angle and vibration, the sensitivity is exceptionally good.

  The extended leg member 12 must be accommodated in the accommodating case 14 again after the cause of the fall such as an earthquake or a strong wind has been reduced. In the fall prevention device 10 of this example, the leg member 12 is pushed rearward while lifting the main body rear part 162 and lowering the position of the stopper 22, and the main body rear part 162 is lowered as it is, so that the head part 221 of the leg member 12 is engaged with the engaging part 26. Can return to the engaged normal state. However, it is possible to add a lever for lowering the stopper 22 in order to save the lifting of the rear portion 162 of the main body.

  If the fall prevention target object to which the fall prevention device 10 is attached is moved carelessly and the leg member 12 pops out, there is a risk of causing some accident. Covering the tip 121 of the leg member 12 with a cushioning material is one countermeasure, but it is practically very important to have a function that prevents the leg member 12 from popping out when it is unnecessary.

  As shown in FIG. 2, a handle 36 is attached to the stopper 22, and a plate-like protrusion 38 is provided on the back surface 35 of the stopper housing 28. The handle 36 can freely rotate together with the stopper 22, but normally, as shown in FIG. 5A, the tip 361 faces the rear of the tipping prevention device 10 and comes into contact with the plate-like protrusion 38. And can move up and down freely with the stopper 22. Then, when the fall prevention target object is moved, as shown in FIG. 5B, the handle 36 is rotated by 90 ° and the tip 361 thereof is placed on the plate-like projection 38 toward the back surface 35 side. Then, since the lowering of the stopper 22 is prevented, the sliding of the leg member 12 remains inhibited, and the leg member 12 does not jump out of the tip 141 of the housing case 14.

  The toppling prevention device 10 is provided with two substantially groove-shaped mounting portions 25 at two locations. The attachment portion 25 on the rear side also serves as the stopper housing 28, but each attachment portion 25 is provided with a long hole 23 on its back surface 35.

  FIG. 4 shows a state where the fall prevention device 10 is mounted on the bottom 46 of the soccer goal. That is, as shown in FIG. 2A, the fall prevention device 10 is mounted on the outer sides of the left and right pipes 461 and 462 of the bottom portion 46 of the soccer goal. The mounting direction is such that the front D of the fall prevention device 10 is in the direction with respect to the ground.

  FIG. 5B shows the periphery of the attachment portion 25 in an enlarged manner, but the pipes 461 are arranged on the back surface 35 side of the attachment portion 25, and the long hole 23 of the attachment portion 25 and the through hole 41 provided in the pipe 461 are arranged. Both of them are connected by a bolt 42 and a nut 44. In order for the stopper 22 to operate normally, at least the bottom of the mounting portion 25 that also serves as the stopper housing 28 must be connected so as to contact the installation surface 24. Therefore, if the thickness of the pipe 461 is different, the connection height on the attachment portion 25 side must be adjusted correspondingly, but this adjustment can be performed smoothly by using the long hole 23.

  FIG. 5 shows another embodiment of the overturn prevention device according to the present invention. In this example, the coil spring 18 is not a compression coil spring but a tension coil spring. The front end 181 of the coil spring 18 is locked to the front end 141 of the housing case 14, and the rear end 182 is locked to the rear end 122 of the leg member 12. FIG. 2A shows the normal fall prevention device 11 in which the leg member 12 is retracted, but the slide of the leg member 12 urged by the restoring force of the stretched coil spring 18 to be shortened. Shows a state in which the stopper 22 is restrained.

  When the fall prevention target object (not shown) to which the fall prevention device 11 is mounted is tilted due to wind, earthquake, or the like and the rear part of the fall prevention device 11 rises by Δh, as shown in FIG. Comes out of the storage case 14, the slide restraining of the leg member 12 is released, and the leg member 12 slides until it protrudes from the tip 141 of the storage case 14. In addition, it is possible to prevent a fall due to a wind or an earthquake.

  The leg member 12 shown in FIG. 6 and FIG. 7 shows another embodiment of the present invention, and the workability of returning the leg member 12 once projected forward into the housing case 14 (not shown) is improved. In the fall prevention device 10 shown in FIG. 1, as described above, the leg member 12 had to be pushed backward while the main body rear portion 162 was lifted and the position of the stopper 22 was lowered in order to pull back the leg member 12.

  On the other hand, the engaging portion 13 of the leg member 12 of this example is provided with a connecting rod 131 projecting rearward from the rear end 122 of the leg member 12 and the leading end of the connecting rod 131, and the long axis of the leg member 12. It is comprised from the engagement board 132 which spreads in fan shape centering on A. FIG. In the normal state, as shown in FIG. 6, the engagement plate 132 of the engagement portion 13 faces downward, and the head 221 of the stopper 22 is engaged with the downward engagement plate 132 to slide the leg member 12. Is suppressed.

  When the leg member 12 that has once protruded is pulled back again, the leg member 12 is rotated around its long axis A so that the engagement plate 132 faces upward as shown in FIG. Thus, the engagement plate 132 is not caught on the head portion 221 of the stopper 22, and the leg member 12 can be sufficiently pushed into the rear portion of the housing case 14 (not shown). Then, the leg member 12 is rotated again, the engagement plate 132 is turned downward, the engagement portion 13 and the head portion 221 of the stopper 22 are engaged, and the normal slide suppression state can be restored. It is not necessary to lift the main body rear portion 162 by a simple operation of simply rotating the leg member 12. Therefore, the fall prevention device provided with the leg member 12 of this example is particularly convenient when it is provided on a relatively heavy fall prevention target object such as a soccer goal. The protrusion 15 provided at the distal end 121 of the leg member 12 is a mark for knowing whether the engagement plate 132 of the engagement portion 13 is upward or downward, and the rotation operation of the leg member 12 is performed based on this mark.

  The locking means for suppressing the constantly biased slide of the leg member 12 is not limited to the stopper 22 employed in the above-described fall prevention device 10 or the fall prevention device 11. Apart from the deterring means for deterring the slide and the detecting means for detecting the floating of the rear part 162 of the main body, both may be configured.

  For example, an electrically operated deterring means such as an electromagnetic valve may be combined with a detecting means such as a measurement of flying height using a differential transformer or a measurement of installation pressure using a piezoelectric element. it can. Although a power source is required, there is an advantage that the suppression means and the detection means can be downsized, and the attachment position of the suppression means is not limited and can be freely selected.

  Further, another fall prevention device according to the present invention includes a main body composed of a leg member and a housing case, an urging means for urging the slide of the leg member, and a detecting means for detecting the floating of the rear part of the main body. The Although the urging means is always stopped, the urging means is actuated when the detection means detects the floating of the rear portion of the main body, and the leg member slides to protrude from the front end of the housing case.

  An actuator using a gas pressure or a motor can be used as the biasing means. As the detection means, measurement of the flying height using a differential transformer or the like, measurement of installation pressure using a piezoelectric element, and the like can be employed. Since the locking device for preventing the slide is omitted, the configuration of the fall prevention device is simplified. Further, by selecting an urging means that can also urge backward, it becomes possible to electrically retract and retract the leg member that has been drawn out once.

  The most simplified fall prevention device of the present invention comprises only leg members and a storage case. When the accommodation case installed substantially horizontally is inclined and its one end is lifted, it slides until it protrudes from the other end due to the weight of the leg member itself. Since the slide urging means and the locking means are omitted, it is possible to reduce the size and weight, and it is suitable for a relatively small object to prevent overturning.

  The present invention can include a roller for assisting the sliding of the leg member. By using the roller, it is possible to reduce the burden on the urging means, and it is possible to increase the speed of the slide and speed up the forward extension of the leg member. The roller may be mounted directly on the leg member or indirectly via an attachment member fixed to the leg member, or may be disposed inside the housing case. If it is attached to the tip protrusion of the leg member, it functions as a caster.

  The soccer goal according to the present invention is provided with any one of the above-described various fall prevention devices in the bottom pipes on the left and right sides. When a fall prevention device is added to an existing soccer goal, it is attached to the outside of the bottom pipe. Alternatively, a soccer goal in which a part of the bottom pipe is also used as a storage case can be newly produced. The anti-tip device is directed forward to the ground. Soccer goals include general, junior, futsal, mini-soccer, and mini-games.

  The soccer goal has a center of gravity on the front side, so it is easy to fall forward due to wind from the back. However, in this soccer goal, if the wind from the back side tilts forward, the rear part of the fall prevention device will rise, so The member is immediately paid out. For this reason, before it falls greatly and it falls, a leg member is projected ahead and can prevent a fall beforehand. Since the rear ascent of the fall prevention device can be detected with high sensitivity, it can quickly respond to sudden falls caused by earthquakes and strong winds. In addition, it is very convenient because it does not require any special installation surface or electrical wiring.

  As described above, the fall prevention device and the soccer goal of the present invention have been described in detail. However, the present invention is not limited to the above-described examples and citations, and the material and shape of the leg member and the housing case, the type and structure of the stopper, and the biasing means. The types of the locking means and the detecting means, the method of mounting the fall prevention device, etc. are implemented in a mode with various improvements, corrections and modifications based on the knowledge of those skilled in the art without departing from the spirit of the invention. Is.

Example 1
A soccer goal fall prevention device 10 similar to that shown in FIGS. 1 and 2 was produced. The leg member 12 is a round bar having a diameter of 22 mm and a length of 990 mm, the housing case 14 is a pipe having an outer diameter of 34 mm and a length of 960 mm, and the coil spring 18 has a wire diameter of 2.3 mm, a center diameter of 25.7 mm, and a length of 950 mm. . Further, the length of the coil spring 18 at the time of compression at the time of compression was 450 mm, and the protruding length of the leg member 12 was 40 mm. The height of the stopper 22 is 70 mm, and the height of the protruding portion of the engaging portion 26 is 5 mm. When the rear portion 162 of the main body 16 is lifted by about 5 mm, the leg member 12 starts to slide from the tip 141 of the housing case 14. About 500 mm protruded and stopped.

  The fall prevention device of the present invention is characterized in that the leg member protrudes forward only when the fall is predicted, but usually the leg member is pulled in and the workability on the front side is not impaired. Therefore, it is easy to fall down and is effective for all the people who go in and out and work on the front side. For example, furniture, electric equipment such as a TV, a refrigerator, and a washing machine, a locker, a vending machine, and the like can be given.

  In addition, the fall prevention device of the present invention is sensitive to a gentle fall caused by wind or the like, and does not require a building such as a ceiling or a wall or electrical wiring. For this reason, it is particularly effective in preventing the fall of an outdoor installation, especially various exercise equipment, especially a soccer goal that is very easy to fall.

  The fall prevention device of the present invention can be attached to an existing fall prevention object as a retrofit, or can be attached at the same time when the fall prevention object is manufactured. Or you may be provided so that it may serve as a part of fall prevention target object.

It is a front view which shows typically an example of the fall prevention apparatus of this invention, the figure (a) is normal time, and the figure (b) is an action | operation. It is related with the fall prevention apparatus of this invention, It is an enlarged view of the stopper vicinity of Fig.1 (a), The figure (a) is a front view, The figure (b) is AA sectional drawing. It is a front view which relates to the fall prevention device of this invention, and expands and shows the stopper vicinity of FIG.1 (b). FIG. 1 shows an example of mounting of the fall prevention device shown in FIG. 1, which is related to the fall prevention device of the present invention, wherein FIG. 1 (a) is a top view showing a mounting state of the soccer goal bottom pipe, and FIG. It is sectional drawing which shows the stopping method. It is a front view which shows typically another example of the fall prevention apparatus of this invention, the figure (a) is normal time, and the figure (b) is an action | operation. Another example of the leg member according to the present invention is shown in a normal state, in which FIG. (A) is a front view, and (b) is a side view from the rear. FIG. 6 shows another state of the leg member shown in FIG. 6 according to the present invention, wherein FIG. 6 (a) is a front view and FIG. 6 (b) is a side view from the rear. It is a perspective view which concerns on a prior art and shows an example of furniture with a fall prevention apparatus. It is sectional drawing which concerns on a prior art and shows a part of fall prevention apparatus shown by FIG. It is sectional drawing which concerns on a prior art and shows a part of fall prevention apparatus shown by FIG. It is sectional drawing which concerns on a prior art and shows another example of the fall prevention apparatus. It is a perspective view which shows an example of the soccer goal with which the fall prevention device was mounted | worn with the prior art.

Explanation of symbols

10, 11, 54, 55 Fall prevention device 12, 52 Leg member 121 Leg member tip 122 Leg member rear end 13 Engaging portion 131 Connecting rod 132 Engaging plate 14 Housing case 141 Housing case front end 142 Housing case rear portion 15 , 19, 32 Protrusions 16 Main body 161 Main body front end 162 Main body rear portion 18, 30, 64 Coil spring 181 Coil spring front end 182 Coil spring rear end 20 Energizing means 21 Locking means 22 Stopper 221 Stopper head 222 Stopper head Bottom 23 Long hole 24 Installation surface 25 Mounting portion 26 Engagement portion 27 Coil spring locking portion 28 Stopper housing 34 Fall prevention frame 35 Back surface 36 Handle 361 Handle tip 38 Plate-like protrusion 40 Insertion hole 41 Through hole 42 Bolt 44 Nut 46 90 Bottom 461 Left pipe 462 Right pipe 50 Furniture 56 The long axis of the projection direction A leg member body 58 rolling element 60 claw-shaped engaging portion 62 protruding engaging portion 66 casing 68 recess 70 the shaft 72 pendulum 74 arm 82 the frame 84 pins 88 soccer goal 92 fall arrester D leg member

Claims (6)

A fall prevention device that is provided at the bottom of the fall prevention object and prevents the fall prevention object from falling down,
A main body comprising a rod-shaped leg member and a horizontally long housing case that slidably houses the leg member in the longitudinal direction;
A biasing means for constantly biasing the leg member in a direction protruding from the housing case;
A locking means for preventing the leg member from protruding from the housing case, and the locking means detects the floating of the rear part of the main body due to the tilting of the main body and releases the suppression of the locking means. Fall prevention device. The locking means includes a stopper disposed below the rear portion of the main body, the bottom of the stopper is in contact with the installation surface, and the head of the stopper is normally engaged with the engaging portion provided on the leg member. When the main body is tilted and the rear part of the main body floats up, the head part of the stopper is disengaged from the engaging part, and the leg member slides. The fall prevention device according to claim 1, wherein A fall prevention device that is provided at the bottom of the fall prevention object and prevents the fall prevention object from falling down,
A rod-shaped leg member and a horizontally long housing case that slidably accommodates the leg member in the longitudinal direction. When the housing case installed substantially horizontally is inclined and one end of the housing case floats, the leg member A fall prevention device that slides inside the housing case by its own weight and protrudes from the other end. A fall prevention device that is provided at the bottom of the fall prevention object and prevents the fall prevention object from falling down,
A main body comprising a rod-shaped leg member and a horizontally long housing case that slidably houses the leg member in the longitudinal direction;
Biasing means for biasing the leg member in a direction protruding from the housing case;
Detecting means for detecting the floating of the rear part of the main body due to the inclination of the main body, and when the main body is inclined and the floating of the rear part of the main body is detected, the urging means is operated until the leg member protrudes from the front end of the housing case Fall prevention device designed to slide. The fall prevention device according to any one of claims 1 to 4, wherein a roller for assisting the slide of the leg member is mounted on the leg member or disposed in the housing case. The soccer goal with which the fall prevention device in any one of Claims 1-5 was equipped in the bottom part pipe | tube on either side.

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