JP2011240892A - Device and method of ensuring safety of cart - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve an issue in which, although sudden and large shaking of a vehicle, such as an airplane, may cause a cart that being moved for food service and merchandise sales to suddenly turn into a weapon against people, very few measures are taken regarding the cart for such instances and people are exposed to a rare, but great, danger.SOLUTION: On an undersurface of the cart, a needle plate in which a plurality of needles are planted and integrated such that the needle points face a lateral direction is provided in a mechanism for piercing the needles at will into a loop carpet adhered to a floor surface. In the cart used in the vehicle, such as the airplane, the mechanism is instantaneously operated, manually or automatically, and the cart is fixed to the floor surface before shaking increases and becomes a threat, thereby preventing injury caused by shaking, such as turbulence.

Description

  The present invention relates to a risk that includes a movement such as when a cart used by moving on a floor surface of a vehicle that carries passengers such as passenger planes, passenger ships, buses, etc., moves up when the vehicle shakes greatly. The present invention relates to a fixing device for fixing a carriage to a carpet on a floor and a method for the same.

  Various methods for fixing the mobile carriage have been published. There is a method in which a claw is attached in the direction of rotation of the rotary shaft, this is rotated, the claw is inserted into the tatami mat, and the furniture is fixed to the floor.

Also, it has a protrusion on the lower surface of the moving carriage so that it can run well on the carpet and still prevent falling. When the moving carriage is lifted, the wheels do not rotate on the outer surface of the moving carriage. There are many things that try to fix the mobile carriage to prevent it from moving or falling over, such as those that have a fall prevention stopper that can be stored in the mobile carriage.

  There is also a method of inflating the tube laterally with compressed air to fix the moving carriage on the swaying vehicle bed, which may be used with the seat on which the passenger sits as a support wall. Another way of thinking is to lay rails on the floor and slide the guides inside to prevent them from vibrating.

  There is also an idea to use magnets for changing the trajectory on which the carriage runs, here is an excellent method based on the idea of using magnets for the carriage, and if this is developed, there is a possibility of approaching a solution is there.

  There is an example that seems to be able to be deployed in a cart, where the wheels are wound around a belt and fixed. This is to push the wheels of the vehicle loaded on the carriage with a belt. This is greatly conscious of the vertical vibration.

  There is an idea to fix the carriage to the floor by stepping on the swinging stopper pipe, and to fix the carriage by pressing the ground friction member against the floor. Furthermore, the idea of moving the carriage with a guide rail placed on the floor and biting into the guide rail results in the function of fixing the carriage from vibration.

  There is also an idea of using a carpet in which a fixing device using a hook-like engagement element is adsorbed on the floor on which the carpet is laid, and a rope or net is hung to prevent collapse of the load.

  In order to protect the dolly or furniture from vibration, there is also an idea to plant the needles diagonally on the board and insert them into the carpet, and these are all excellent and have sufficient functions for each purpose. It was.

  However, in any of the inventions, when the floor of a vehicle that carries passengers such as passenger planes, passenger ships, trains, and buses shakes greatly in the vertical and horizontal directions, dangerous movement such as lifting the carriage from the floor In order to prevent damage to the floor carpet, there is no other example, and in that case, there is little consideration for safety when the needle that is hidden under the carriage is exposed, Others were inadequate in fixing function.

  Services for transporting food and drinks to passengers' seats that are used to move passengers play an important role in making travel enjoyable, and their importance is increasing ing. On the other hand, however, these vehicles always have the potential to suddenly encounter major shakes during service.

  Taking a passenger aircraft as an example, there are unexpected unexpected turbulences, sudden rises and falls to avoid near misses, and unavoidable sudden driving operations to avoid contact with other cars even on the bus Sudden braking, riding on falling objects on the road, passing through uneven parts of the road, etc. are the causes of large shaking. In a ship, when the car shakes in bad weather, the cart may fall over or run on its own.

  Passenger aircraft are becoming larger and larger, but in the case of large aircraft, the width of shaking increases even when encountering the same turbulence. In addition, since the length of the airframe is increased, the distance from the center of gravity that is the center of shaking is increased as a whole, so that the vertical movement is increased depending on the position. Furthermore, because the ceiling is high and wide, the distance traveled by people and objects when they bounce up increases, which also increases the damage.

  Turbulence may be predicted from barometric arrangements and satellite images, and may be based on information from other airplanes flying on the same route, but turbulence of dry air in clear sky with no clouds ( (Hereinafter referred to as turbulence) cannot be seen in satellite images, and currently it cannot be seen in aircraft radar. Also, since the position of the turbulent airflow moves over time even on the same route, the information on the preceding aircraft may not be useful. There is always a small low pressure that does not appear in the weather map, a vortex that can be at the boundary of the front and jet stream, and unless there is information from other aircraft flying immediately before the same route, turbulence can not be reliably predicted is there.

  A device called a wind profiler has been developed to detect the wind direction and speed of the sky by emitting radio waves, but this can only be understood around the land where it is installed. The research and development of Doppler rider, who knows the movement by seeing the reflection of dust in the air with a laser and knows the turbulent air in the clear sky, has been successful, but it is said that the practical application to become the weight on the aircraft will be 10 years later. The distance that can be detected is said to be 10 km. This 10 km distance is about 40 seconds in a jet aircraft, and even if a Doppler rider is equipped on an aircraft and it is found just before 40 seconds of turbulence, there remains a question as to whether this is in time for countermeasures.

  In the midst of such problems, the aircraft itself is developing into larger size and higher technology, and at the same time, efforts are always made to predict the movement of air that causes this great shaking. However, it has not yet been possible to completely avoid the sudden large shakes encountered without being foreseeable, and the service cart (hereinafter referred to as the cart), which is a hand cart for laying, can be pre-stored in the storage yard There is still a big hurdle in the early turbulence discovery that can lead to the behavior of being stored in the galley.

When there is a big shake, the person who doesn't wear the belt floats up and jumps up to the ceiling, leading to a severe fracture of the cervical spine, but the damage at that time is limited to that person alone. The belt can be easily worn in a short time. On the other hand, the trolley cart that is not yet stored in the galley in the plane jumps up, moves up and down, and falls, causing damage to many people. Although there is a recognition that the cart can be a weapon for people like this, from the common recognition that it is impossible to fix the problem on the side of the cart and solve the problem, I was praised to think.

  At present, the partial turbulence on the sea in fine weather is not reflected in the radar, there is no information from the ground, and it is impossible to predict completely even if other methods are added. Large unpredictable tremors occur in a form that is inevitable but less frequent. When crossing the Pacific Ocean on a great circle course, there is a high possibility of crossing the jet stream, and it is said that the vortex at the border will always encounter a few times on the Great Circle course.

  If you look carefully at the information, damage caused by sudden tremors occurs about once every month on the Pacific Ocean. But not as much as a big accident like a crash. Therefore, despite the fact that it is a problem that must be taken seriously from all aspects when considering the overall magnitude of the damage, at present, efforts are being made to improve the prediction technology, and there are expectations for this. At the same time, measures should be taken on the cart side, but there was no focus on it, and no measures were taken on the cart.

  In an example of an accident, United Airlines' Boeing 747 aircraft (374 passengers, 19 crew members) encountered turbulence over the Pacific Ocean at midnight on December 28, 1997, and a flying cart broke through the ceiling. Passengers fell down on the cart that broke through the ceiling and fell down.

  Reprint part of the story. “The people who finished the dessert were blossoming in the story of their trip. Then the aircraft suddenly started to shake little by little. The shaking gradually increased and the aircraft suddenly drove down rapidly. A cup or plate splattered from the stewardess who was collecting the dishes.The whole body floated in the air as if everyone were descending on a roller coaster.A person sitting on the other side of the aisle I jumped down the aisle and fell down on the document, blood turned red with blood.The cart that was carrying the dishes floated in the air and bounced back from the ceiling, and the customer was lying underneath and fell down. The woman sitting in the seat did not move while being thrown into the aisle.When an ophthalmologist from Chiba rushed to the non-moving customer, she was bleeding from the ears and nose and continued artificial respiration and heart massage, but no reaction No, I had already died because of an intracranial hemorrhage when I hit my head against the ceiling. ”One person died in this accident, 129 severely injured, 10 hospitalized, and 2 of them were paralyzed in the extremities due to a clash on the ceiling. It became an inability to walk.

From this story, you can read the change in G caused by up and down shaking. G, which is close to 0G, which is weightless, and minus G are frequently applied, and at least once approaches minus 1G. This agrees well with the content of FIG. 30, which is a graph showing changes in G in other accident examples. Here, it begins to oscillate at reference numeral 70, and oscillates up and down at intervals of about 2 minutes. At reference numeral 71 after about 20 minutes, there is a large decrease in G, which exceeds 0G. Further, the code 72 after 6 minutes exceeds 0G. There are about 10 values close to 0G. In this case, it seems that the rear of the aircraft was a large negative G. In the case of a negative G, people and objects are jumped up toward the ceiling, in other words, the ceiling is down and falls.

  The route and altitude are specified to prevent accidents between aircraft. On the other hand, the movement of air is free. This is the reason why it increases the chances of encountering turbulence, but in spite of the possibility of encountering unexpected turbulence, it cannot be completely avoided with current technology.

  The rise of a person in a story can be prevented by wearing a belt at all times. However, there is still no technology to prevent the cart from rising.

  Measures against sudden turbulence encounters are more focused on the accuracy of the prediction, and what happens when the cart cannot be fixed when a sudden large shake occurs is the overall vehicle possessed by an aircraft. It seems that one of the risks is currently accepted. For this reason, it is considered that there is no interest in the cart measures.

  On the other hand, buses and other vehicles are also increasing in size and improving service. In this case, sudden braking suddenly occurs unpredictably, so the need for countermeasures is the same.

  In a ship's passenger ship, shaking caused by bad weather is easy to predict but unavoidable, and the problem here is that normal service is performed even in that state.

There are many cases where passengers and crew are injured when passenger planes encounter unpredictable turbulence. In order to understand the size of the problem, the following examples are given.

First, on March 5, 1966, British Airways Flight 911 encountered a mountain wave on Mt. Fuji and decomposed in the air, crashed near Tarobo on the hillside of Mt. Fuji, and killed 124 people. Because this is in the clear sky without clouds, the mountain wave that is the vortex of the air that can be formed after the air flow hits the mountain is not visible, it can not be predicted and it can not be predicted in the turbulent air flow It is a rush. Although the existence of mountain waves is now well known, there are still examples of encounters.

  Even if it does not lead to a crash after that, there are no examples of sudden turbulence. December 28, 1997 Late midnight United Airlines encountered turbulence over the North Pacific, and one injured 129 people were hit by the ceiling and died. This has already been mentioned as an example of an accident.

There are many records of accidents that can be obtained. Of the accidents that encountered turbulence that could not have been foreseen, just listing a part of the records of arrivals and departures in Japan or damage to Japanese people is as follows. become. Since these are related to Japan, many are on the Pacific Ocean, but this frequency is an amount that cannot be even more indifferent to the world.

  Record part of the accident. July 9, 1998 Turkish Airlines Flight 1022 encountered turbulence and six passengers hit their heads on the ceiling and were seriously injured. August 22, 1998 Continental Micronesia Airlines Flight 967 was injured by turbulence while distributing in-flight meals over 600km north of Guam. September 11, 1998 China Airlines was injured by turbulent airflow over Hawaii. September 27, 1998 Japan Airlines Flight 56 to Honolulu was injured by turbulent airflow over the Pacific Ocean.

On November 14, 1998, Japan Transocean Air Flight 022 suddenly descended over Niijima due to a near miss, five people were seriously injured, and there was no sign of wearing a belt. January 10, 1999 United Airlines flight 883 was turbulent over the Pacific Ocean and two people sprained their necks. January 21, 1999 US Continental Airlines Flight 910 was injured 22 people by turbulence at an altitude of 11,000 meters between Narita and Honolulu. On October 17, 1999, China Southern Airlines met turbulence between Dawn and Hong Kong, and 45 people hit their heads against the ceiling.

On October 21, 2002, Japan Airlines Flight 356 met turbulence at 11500 meters southeast of Nagoya at 11500 meters, and 17 people were injured. Two of them had lumbar fractures, clavicle fractures, no signs of wearing seat belts, and unpredictable turbulence. It was.

February 23, 2004 United Airlines in Narita Hawaii suffered turbulence at an altitude of 4200 meters and three people were injured. Nine people were injured in China Eastern Airlines on the same day due to turbulence. March 18, 2005 Northwest Airlines Narita departs Saipan for an altitude of 4500 meters and suffered turbulence. Six passengers were injured from their seats to their heads and necks. On September 7, 2005, Jal Express flight 2210 suffered turbulence at 6000 meters above Suruga Bay, and two cabin attendants hit their heads on the ceiling and were injured. The shaking at that time was 15 seconds.

On February 28, 2006, JALWAYS Flight 71 suffered turbulence at an altitude of 8400 meters one hour after taking off from Honolulu, and two people hit their heads and were injured. On September 2, 2007, Korean Air Flight 733 encountered sudden turbulence during in-flight service at an altitude of 10,700 meters between Jeju Island and Kansai Airport, and five passengers and six out of seven flight attendants were injured. There was a sudden drop of 200 meters.

On October 1st, 2008, ANA 121 was injured by turbulence at an altitude of 11000 meters off Kochi. A typhoon was approaching, but it was altitude and there was no influence, so there was no sign of wearing a belt. Suddenly there was a big shake. October 7, 2008 Qantas flight 72 was injured by turbulence over the Indian Ocean and 36 injured. On February 20, 2009, Northwest Airlines suffered turbulence at 9200 meters near Miyakejima, and 47 passengers were injured. Immediately after the sign of wearing a seat belt came out.
April 24, 2009 Canadian Airlines suffered turbulence 100 miles south of Honolulu and injured 22 people.

  It is surprising that there are many cases just by arranging records of turbulent accidents. Most of these have no signs of wearing a belt and are being laid out, that is, turbulence that the Captain could not have predicted. Many of these accidents have caused people and objects to jump up to the ceiling. The example of the cart destroying the ceiling is shown in the beginning, but there are many accidents caused by the cart.

  Sunny turbulence, especially turbulence over the ocean, cannot be seen from the ground, from satellites, or from the radar of the aircraft. It suddenly encounters without prediction in an unpredictable way.

  Passengers can wear seat belts even when they are calm to prevent their bodies from floating when encountering turbulence. However, it is impossible to prevent the flight attendant who is moving the cart and the cart from rising.

  According to the records of the accident, there was a large up and down movement after a small vibration when there was no sign of belt wearing. At this time, the aircraft is piercing the invisible front, the vortex created by the boundary of the jet stream, or the polar updraft or downdraft larger than the plane.

  When the aircraft enters an ascending or descending airflow region that is larger than the aircraft, the aircraft greatly changes its altitude at that border, and at the same time, the maneuver reacts and changes its attitude to maintain the altitude. Many are autopilot reactions. When the altitude falls, the nose is raised to return to the original altitude. When the altitude goes up, the reaction is reversed. This change in posture affects the expansion of the shaking in addition to the shaking caused by a sudden change in altitude, causing the front and rear to move up and down around the center of gravity of the aircraft.

  When entering the downdraft, the aircraft moves upwards and changes its attitude, so the rear of the aircraft moves further downward than the aircraft falls, and the G reduction is greater than the G reduction received by the center of gravity of the aircraft. Minus G. The expansion of the movement is larger as the distance from the center of gravity is further away. The cabin behind the center of gravity is longer than the front, which means that there is greater vertical movement than the vertical movement felt by the Captain. This is larger the farther from the center of gravity. When the air enters the updraft, the movement is the opposite, but the movement expands depending on the position in the cabin.

  FIG. 30 is an example of the records of the G sensor remaining on the fly and the recorder in the accident, which makes it possible to better understand the situation where a large shake suddenly comes after a small vibration. This is an example in which the shaking time is particularly long, but when viewed here, there are about 10 drops that show a value close to 0 G in 30 minutes.

  This value close to 0G is that of the place where the instrument is placed, and that place is in the cockpit, which is the front part of the aircraft, and the rear passenger room located farther from the center of gravity is farther than the front part of the aircraft. Since it shakes greatly, when the value is close to 0G in the record of FIG. 30, it becomes G on the minus side which moves the object upward in the rearmost guest room, and at this time, it seems that people and objects have fallen toward the ceiling.

  The “cart that falls toward the ceiling”, that is, the cart that has jumped up and the cabin crew that was moving by pushing the cart, will fall onto the passenger next when minus G disappears. To make it worse, this is repeated. In this case, even if the passenger wears a belt, it is inevitable that a square metal box close to 50 kg will fall at the place.

  In addition to turbulence, sudden large shakes can occur due to unavoidable sudden maneuvers. A passenger aircraft usually flies at the altitude of the route determined by the rules of instrument flight. This means that the westward route is the following integer times 1000 ft, ie 2, 4, 6, 8, 10, 12, 14 16, 18, 20, 22, 24, 26, 28, 31, 35, 39, 43, 47 1,000 ft, the eastward route is determined as 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 33, 37, 41, 45,000 ft Then, the altitude is specified in the flight according to the control instructions. This altitude is a value indicated by the barometric altimeter regardless of changes in barometric pressure. Therefore, all passenger planes are flying in a corridor made up of several layers above and below the same route, which is safe.

  But there are exceptions. Until it rises to this predetermined altitude, the passenger plane must cross the altitude of the other route. This is an unavoidable nature of the aircraft. For this reason, the control is controlled by detailed instructions, but near errors due to human error or the like can occur when making complex intersections. At that time, a sudden maneuvering must occur.

  As with the attitude control when encountering turbulence, ascent and descent in the near miss is performed by changing the angle of the aircraft by raising or lowering the nose around the center of gravity, the change in G in the cabin increases Or larger than the change in G of the aircraft that occurs during the descent. In particular, in a large aircraft having a long body, many guest rooms are far away from the center of gravity, so that the value of G for many guest rooms is larger than the G of the aircraft rising or descending. Therefore, a minus G such that the cart penetrates the ceiling easily occurs.

  An aircraft is a moving object that floats in the atmosphere, and the objects in it and passengers in it are riding on the floor with a downward 1G and moving at a constant speed in the atmosphere. . The atmosphere is not always calm, and if the aircraft body moves up and down due to atmospheric influences, the movement of the object and the aircraft moving together in it will be different, changing the contact pressure with each other, or You will leave and touch. There is a problem that this atmospheric movement cannot be completely predicted by current technology. As such, there are still problems in the immediate vicinity of aircraft, and passenger aircraft are now operating with small risks at all times.

  This issue is being addressed seriously by aviation officials, but it focuses on how to predict turbulence and prevent near misses. Even so, improving the cart and improving safety as a countermeasure against the effects of a major shake as a possible accident is completely overlooked. This is thought to be due to the fact that there was no means.

JP-A-62-109507 JP-A-9-52501 JP 2007-331561 A JP 2003-218544 A Japanese Utility Model Publication No. 6-13969 Special table 2003-522862 gazette Japanese Patent Laid-Open No. 6-24548 WO96 / 05981 Publication JP 2003-137102 A Japanese Utility Model Publication No. 5-80935 JP 2004-98704 A Japanese Utility Model Publication No. 5-70314 Japanese Patent Application No. 2009-181212

Abandoned by Kanichiro Kato, publisher Kodansha Near Miss, Kanichiro Kato, Kodansha

  In these patent documents, the instability of the moving cart is fixed to casters, to contact objects with large friction with the floor, to rails and chairs that cannot be placed on the floor of the cabin. It is an invention that has a function against the danger of a normal carriage, because it is dangerous if there is a person's foot or hand there when it is pressed, and it is attempted to fix it with the chair by inflating the tube etc. However, no consideration has been given to providing passengers with comfort and security and securing them safely.

  In the case of unpublished Patent Document 13, an infinite number of needles are obliquely planted on a plate, and when an abnormal G is applied, the diagonal needles are inserted into the carpet on the floor to prevent movement. However, there was a problem that a new danger would arise if the needles were not managed.

  Non-Patent Documents 1 to 3 show many dangers that passenger aircraft are potentially possessed.

  The problem to be solved by the present invention is that in a vehicle on which a passenger rides, when the cabin crew performs a catering service, the cart is moved in anticipation of shaking, but sometimes the vertical movement more than expected cannot be predicted. When you suddenly encounter an abnormal G or feel a danger, you want to fix the cart on the floor on the spot, but you can't. There are times when you want to fix the cart to the floor even on buses and passenger ships. Also, to do these things, you can't do it with equipment that doesn't make people feel uneasy at first glance. Also, there are times when you want to fix the cart anywhere, but there is no way.

  The present invention begins by recognizing this problem with aircraft. When a passenger plane encounters a large shake, the cart is usually stored in the galley in advance. However, if you encounter a large unpredictable shaking while the cart is moving, you will have difficulty moving to the galley, and you will be in danger until the storage is complete, but you will need to return to the galley and store it in the meantime. There is no safe way.

  There are times when you want to fix the carriage to the floor even on buses and passenger ships.

  When an aircraft encounters sudden turbulence, it is in great danger until the cart is stored in the galley. In such a case, I would like to fix the cart once in the place where the shake became large and it became dangerous or felt dangerous, but the shake stopped, but this is not possible Even if it was thought that it was necessary, it was given up and it was not considered.

  Furthermore, there is currently no way to deal with a sudden swing that cannot be predicted and suddenly occurs. Furthermore, even if it is not a big shake, the cabin crew may feel anxious about the expansion of the shake, but I would like to have a safe measure at this time.

  Not only instantaneous response to sudden large shaking, but also operation in combination with the brake in advance when the swing is predicted, and also operation to fix to the floor using the brake when stopping the cart normally If it can be performed, the safety level is further increased.

  In addition, a G sensor is attached to the cart, and it operates automatically when there is an abnormal G, or the cart is equipped with a wireless receiver and a device that operates in response to commands, and a fixed G sensor is installed. There is also a method of issuing commands to all carts and operating them when it is judged dangerous by analyzing the shaking.

  The present inventor has experience of falling 2000 meters by encountering a turbulent flow of mountain waves by his control. While the aircraft was falling, I saw everything that was not fixed in the plane floating and moving around. Also, while boarding a passenger aircraft as a passenger, there was a sudden shaking, and the cabin crew who was in the vicinity was unable to move the cart and helped to panic.

  This experience made me focus on this problem. In the process of that consideration, research was carried out by embedding rails under the floor, laying a thin iron plate under the carpet, attaching a magnet to the cart, fixing it to the legs of the chair, and using strings and wires. However, there was a problem with both.

  Passengers in the cabin must be easy for passengers to walk. The idea of using rails is that foreign objects are present in the passage, making it difficult for passengers to walk, and floors made of honeycomb for weight reduction are not suitable for embedding and laying rails. In addition, the cart that fits the guide has a reduced degree of freedom of movement, and the passengers also feel uncomfortable with walking.

  In the method of using a fixed magnet under the cart, an iron plate must be laid under the carpet, resulting in a problem of increasing the weight of the aircraft, and magnetic force on the passenger's body and property. I was worried about the impact.

  We also considered how to attach an air bag to the side of the seat of the cart and inflate it when necessary to secure the cart to the seat, but the seat width can be changed by removing the seat and moving it to change the position. In addition, when the airbag spreads out, it was impossible to implement it because of the danger of passengers' feet and hands on the outer surface of the seat.

  The biggest problem was that putting a special feature on the cart that made it stand out made the passengers feel uneasy. In other words, it is not conspicuous and is required to operate instantaneously at any time and anytime.

The invention of Patent Document 13 has solved these problems in consideration of these problems, but has a problem that it becomes complicated in actual operation.

In the invention of Patent Document 13, a plate (hereinafter referred to as a needle plate) in which a number of thin needles or thick needles (hereinafter referred to as needle bodies) are obliquely planted with the same height of the needle body from the substrate. ) And move it sideways and sew a pile yarn knitted in a loop shape (hereinafter referred to as loop yarn) on a floor surface and sew it into a fabric such as hemp. The loop pile carpet (hereinafter referred to as "loop carpet") uses the strength of the loop yarn to fix the cart, and the loop yarn fixes the cart to the floor with sufficient force. .

On the other hand, the needle body of the needle plate is usually hidden behind the cart and is not a problem. In the unlikely event that the loop carpet fails to be fixed to the floor and falls or jumps up, the exposed needle body becomes dangerous to humans. In Patent Document 13, there is an example that takes this problem into consideration, and this is re-recorded in FIG. 16, but a new technique is required for the mechanism for taking the needle body into and out of the plate with a hole. The complexity remains.

  The cart is common to all aircraft models, but once pulled out from the galley at the arrival point, taken down from the fuselage and transported to a catering contractor, where it was washed and arranged for the next time. Take the process of being delivered to the aircraft. Ensuring the safety of the needle plate in this process is also an important issue.

For this reason, in the invention of Patent Document 13, in order to prevent danger in this catering process, it is preferable to fit a cover plate on the needle plate, or to provide a movable cover plate on the bottom and use it by moving it. However, the next time it is stored again in the galley, if the user forgets to remove the cover plate, the function of the needle plate is completely invalidated, which increases the burden on the cabin crew.

As another measure, the area of the needle plate is made smaller than the area of the bottom surface of the cart, and usually there is a covering plate on the lower surface of the needle plate, and this moves back just before the needle plate goes down and contacts the carpet. , How to contact the needle plate with the loop carpet. Further, there is a method of making the cover plate a flexible material and winding it instantaneously, but there is a problem that if the mechanism is defective, the function of the needle plate cannot be exhibited at all.

The present invention has been studied in order to eliminate or reduce the problems of Patent Document 13 in order to solve these problems and make them even better. That is, near the needle tip of the surface created by the tip of the needle body planted at the same height (hereinafter referred to as the needle tip), near the surface created by the needle tip, parallel to the direction in which the needle bodies are arranged Alternatively, a convex portion that protrudes from the surface and protects the needle tip (hereinafter referred to as a protective convex portion) is provided.

Thereby, safety is remarkably improved whether or not the shielding plate is provided.

The upper surface of the loop carpet used in the passenger plane is a convex portion (hereinafter referred to as the loop top) made of loop yarn, as shown in the structural diagram of FIG. 32, the photograph of FIG. 33, and the photograph of FIG. When a part of the surface of this loop carpet is pushed from the top with a thin protruding protective convex part, it is recessed and recessed, and the part that is not pressed protrudes relatively Yes. The present invention uses this property of the loop to dent a portion of the loop carpet and hook the needle onto the loop yarn on the remaining surface to secure the cart.

A part of the surface of the loop carpet is pushed in temporarily by the protective convex part, and a large number of needle bodies in the surface made by the protective convex part of the needle plate are adjacent to the surface of the loop carpet surface. Is moved into the surface formed by the top of the loop and then moved sideways, or moved sideways while being inserted, and the needle body is hooked on the loop. This not only prevents the bottom of the cart from being fixed to the floor surface of the loop carpet and prevents it from moving upward, but also when the needle body of the needle plate is not in contact with the loop thread of the loop carpet in the machine. The protective convex part safely hides the tip of the needle body around the needle body.

This protective convex part may be a hook-like structure integrated with the base of the needle plate, or may be formed solely with a U-shaped wire, or the L-shaped needle body and its base bent part may be used. It is good also as a protection convex part.

It is desirable that the movement of the throat plate to secure the needle body by inserting the protective convex part into the surface of the loop carpet and inserting the needle tip into the loop thread, move it sideways. It does not matter, you can move it sideways while lowering, even with a linear movement that pushes down diagonally, or even with an arcuate movement, the needle tip pierces the loop thread while sunk into the surface of the loop carpet created by the loop thread It goes. FIG. 13 illustrates the movement.

Further, when using an L-shaped needle body, if it is exposed and a force is applied from the outside, the entire needle body is pushed and bent, and as a result, the tip of the needle body is a convex portion of the needle plate. It sinks further into the surface it makes, and the result is even safer. Even when the other protective convex portion is configured separately from the needle body, the needle body is pushed and bent toward the retracting side, so that safety is improved.

If the tip of the needle body is slightly bent inside the surface formed by the convex portion of the needle plate, the safety becomes more effective.

The tip of the needle body may be parallel to the surface of the needle plate, may be bent inward to enhance safety, or may be bent outward to improve the piercing property to the loop carpet. It is desirable to determine this according to the characteristics of each loop carpet and the required performance.

As shown in the structural diagram of FIG. 32, the loop carpet is a loop yarn rolled into a loop of reference numeral 74. When viewed from the top, the loop yarn forms the top of the loop as indicated by reference numeral 74 in the photograph of FIG. Is used.

  The floor of the passenger plane is made of a lightweight material such as a honeycomb, and the carpet is laid on top for the purpose of protecting it from local loads such as sharp heels. The carpet is a loop carpet in which a large number of yarns are bundled and rolled into a loop shape as shown in the structural diagram of FIG. The use of the loop carpet comes from the necessity of serving a cart caster to make it easier to roll, and the present invention uses this. In the structure diagram of FIG. 32, there are three yarns. However, in the actual case, as shown in the photographs of FIGS. 33 and 34, more than 100 yarns are twisted. Power to have is strong.

In some cases, the loop top portion is partially cut to produce a cut surface of the yarn, and this portion is patterned. In this case as well, there is a loop portion. Although the fixing force is inferior, the function of the loop top is the same, and the loop top can be used for fixing purposes. Accordingly, both a loop carpet with a full loop and a loop and pile carpet with a pattern meet the object of the present invention and are included in the loop carpet in the present invention.

The use of the loop carpet by the passenger plane is due to the necessity of reducing the rolling of the car when the cart is moved, and the loop carpet is used in the aircraft in principle. The use of this loop carpet in an airframe is the beginning of the present invention. Loop carpet is the best in the current technology, but in the future, when flooring superior to loop carpet was born as a carpet due to rolling ability and needle holding power, it can also be used for that flooring. To do.

  The needle body pierces the loop top, the side surface of the loop yarn and the entangled yarn, and the needle is caught by several percent of the bundled yarn of the loop carpet. In the case of a certain loop carpet, there are 16 loop tops per 1 cm 2, and 140 loop yarns forming one loop top are bundled, and these loop yarns form a loop to form the loop top.

The strength of one loop of the loop yarn bundled to a diameter of about 1 mm is about 3 kg, and there are about 1600 pieces in 100 cm 2. Therefore, the strength supported by all loop yarns is about 5000 kg. On the other hand, the folding strength of the needle exceeds 4 kg with one 1.0 mm diameter futon needle.

When 70 of these needles are planted on a 100 cm2 board, all of these needles are strong enough to hold about 280 kg, with 30 percent of these 70 needles hanging on 20 percent of the carpet loop yarn. It will support 60kg of weight. When a pattern is made by partially cutting the top of the loop, the loop yarn portion that is in the loop shape functions. Since this holding strength is 100 cm 2, it is possible to increase the area of the needle plate within the size of the bottom surface of the cart, and further increase the holding strength for fixing the cart.

  Normally, an aircraft is strong against positive G and weak against negative G. The negative acceleration resistance of a passenger aircraft is 1.5 or less depending on the model. That is, there is no need to consider the danger caused by the cart when the aircraft is destroyed G. Since the weight of the cart varies depending on the amount of items contained therein, for example, even if it is 50 kg, it is sufficient if it can withstand 75 kg even when considering the case of 1.5 G that the aircraft can withstand. That is, the needle plate has a sufficient holding force for practical use.

Normally, the direction of the loop of the carpet on the floor of the passenger plane is that the entire floor of the fuselage is aligned in the same direction, but the direction of the loop yarn at the top of the loop is not necessarily uniform as shown in the photograph of FIG. The direction in which the needle is hooked is desirably aligned in a direction in which it is easy to be inserted into the loop. If you select the direction that is easy to make in the mechanism and move it, the fixed function will be demonstrated.

  The loop yarns are shown as parallel yarns in the structural diagram of FIG. 32, but are actually twisted, and the piles are tightly sewn in the same direction on a fabric such as hemp as shown in the photograph of FIG. However, since the fibers are twisted, the loop is twisted and the direction of the top of the loop becomes random as shown in the photograph of FIG. Since the direction of the fiber at the top of the loop is not fixed in this way, the needle pierced in a certain direction catches any fiber in the loop. It also functions effectively between fibers and tight gaps.

  Adhesion between the carpet and the honeycomb floor is often a double-sided adhesive tape, but its vertical peel strength is about 35 kg / 100 cm2, which is also the area of the throat plate making use of the area of the bottom of the cart. Considering that, it has enough strength. It is desirable to increase the area of the adhesive tape for bonding between the carpet and the honeycomb floor, and the strength of fixing can be increased by increasing the number of needles to enlarge the needle plate and piercing the large area of the carpet. Carpets that are not bonded to the floor substrate with adhesive tape can also serve as bridges when force is applied.

  With this strength in the background, when it is necessary to fix the cart to the floor surface due to abnormal vibration, the protective convex part and the needle body are formed on the surface formed by the loop top where the fibers of the loop-shaped yarns that make up the carpet are dense. First squeeze in, then move sideways toward the tip of the needle body, or move in the needle tip direction while squeezing, and hook the needle body from either direction onto the loop thread and the top of the loop. This completes the method of fixing the cart to the floor.

  Although there are various surface conditions of the carpet, it is effective to make the needle piercing direction orthogonal to the fiber direction of the loop top when the directions of the loop top are aligned. There are also two-way or multi-way methods. Normally, the loop yarn is twisted so that the direction of the loop is not aligned correctly, but the slanted needle is also good at catching and fixing the loop yarn and the top of the loop.

The needle can be a 1.0 mm diameter futon needle, a thick 1.8 mm sail difference needle (trade name), or any other needle shape, but it is much stronger than the loop carpet loop strength. There is no need. However, the shape of the tip of the needle body is desirably a sharp and smooth shape that is difficult to damage the carpet when a force is repeatedly applied to the carpet. The shape of the tip differs depending on whether the tip is used frequently or if it is considered effective if the most dangerous swing occurs once.

  Furthermore, in the present invention, there is an example where the needle body is bent in accordance with the purpose, and the needle plate is fixed to the substrate regardless of the bent shape. The purpose of the practitioner is to determine whether the needle thickness and tip shape should be less damaging to the loop carpet even when used frequently, or whether it will affect the loop yarn of the loop carpet after repeated use. Choose by.

  In the case of usage with high frequency of piercing the carpet, a method of reducing the friction of the needle to reduce the damage to the carpet caused by the piercing of the needle, a method of applying no force even when pierced, aramid fiber (product) It is conceivable to mix high-strength fibers such as the name) into the carpet.

An example of a needle plate planted in parallel with the surface of the needle plate as shown in FIG. 2 is shown in the photograph with the needle body in FIG.
As shown in FIG. 2, the needle body of reference numeral 2 is planted on the substrate of reference numeral 1 and fixed with the resin of reference numeral 3, but the needle body may be inserted into the substrate and fixed to form a needle plate. They may be lined up and integrally molded by resin injection molding. 3, 4, 5, 6, 7, 8, and 9 show the needle plate as a schematic diagram with needle bodies of various shapes.

FIG. 9 shows a situation in which the base bent portion of the L-shaped needle body is a protective convex portion. FIG. 10 shows an example in which the needle body and the protective convex portion are separated from each other. The U-shaped wire 4 is pressed against the loop top of the loop carpet, and the needle 2 is inserted. In FIG. 11, the protective convex portion has a hook shape. Here, the hook indicated by reference numeral 5 integrated with the substrate presses the top of the loop. The needle tip is hidden in the surface that the heel creates. Reference numeral 5b indicates that the ridges are made uneven so that the protective projections are recessed.

FIG. 12 shows an example of a structure in which a needle plate provided with needle bodies of these various shapes is provided on the bottom surface of the cart. When the lock that supports the needle plate 9 is released by pulling the start wire 8, the slide guide rail that supports the needle plate 11 is pushed down by the force of the spring 10. It is. As a result, the throat plate is pressed against the carpet, and at the same time, the protective convex portion and the needle body are sunk into the carpet. Is removed. As a result, the needle plate of reference numeral 1 is pulled by the spring of reference numeral 14, the roller of the slide block of reference numeral 15 rolls in the rail, and the needle body of reference numeral 2 pierces the loop carpet.

To release this, the needle 16 is pulled out of the loop carpet by pulling the release wire 16 and returned to the original position by pulling the pulling wire 17 and the locks 13 and 9 are locked.

The cart presses the outer periphery of the car and stops it as a brake. At the same time as stopping with this brake, the needle is inserted into the loop carpet. No force is applied to the loop yarn, and the loop yarn is minimally damaged. Therefore, if you feel uneasy about shaking even if there is no shaking, it is a safe and secure measure to insert the needle by operating the device. This is an advantage over the manual case. When it is safe, release it manually and move the cart.

In the case of automatic operation, when the data change of G sensor predicts danger, the operation command of the device is issued, and if it returns to normal, it will be released. During this operation, the cart cannot be moved and the flight attendant To avoid danger. Therefore, it is preferable to use a mechanism that also applies the brake. Since the present invention is an invention of a mechanism for fixing a cart to a floor surface using a needle body, in order to do this, the apparatus is operated by predicting danger by analyzing directly from a G meter signal or entering a computer. The description of the electric circuit and software is omitted.

  If the operation of the device is delayed due to vibration and the cart is already lifted even if it is slightly lifted, the needle piercing will be lost. In this case, should the device be restarted promptly the next time it touches the floor? Continue to operate repeatedly. However, the basics are to ensure that the device is activated before the cart is lifted and should be made and operated as such.

When the needle plate is placed on the bottom of the cart with the needle body down and away from the top surface of the carpet, when a large shake occurs, when you feel a danger by predicting the shake, when you stop further, The needle plate is pushed down to the carpet surface, the protective convex portion and the needle tip are inserted into the top of the loop, and the needle plate is shifted laterally in the needle tip direction. This hooks the needle body onto the carpet loop. The movement of the needle is indicated by reference sign b in FIG. Further, the moving needle plate and the bottom surface of the cart are structured so as not to release the cart upward when the cart is lifted upward. For example, a protrusion such as 18 in FIG.

Basically, the needle plate is pushed down and then shifted in the direction of the needle tip. However, the movement is omitted, and various movements such as a movement of pushing down the top of the loop while being pierced are possible as shown in FIGS.

More importantly, it is a mechanism that quickly and completely unlocks. This is because it is necessary to quickly remove the cart and release the passage after the shaking has settled. The method of the needle plate and the needle body has come true.

There are various shapes of the needle plate to be inserted into the carpet as shown in FIG. A pair of needle plates are used so that the directions of the needle bodies are reversed, and are sandwiched from opposite directions as indicated by reference symbol a, spread in opposite directions as indicated by reference symbols b and d, or arranged side by side as indicated by reference symbols c and f. is there. Alternatively, the lateral movement of the needle plate is set to one direction, and the needle body of one needle plate is made vertical or a holding plate having no needle body, and the needle body is inclined only from one direction as indicated by reference numerals g, h, i. Alternatively, the needle body may be punctured, or the needle body may be planted in a concentric sequence of concentric circles with the needle tip directed in the direction of the concentric circle, and the needle body may be rotated and inserted.

In the case of a method that stops movement by only one direction, not a pair of reverse movements, and only one of them moves by braking or up and down, when the lift is completely stopped, the fixed function can be demonstrated. it can. It becomes mechanically advantageous.

FIG. 2 shows an example of a method for implanting a needle body on a substrate and one shape of the needle body. Reference numeral 2 in FIG. 2 is a standard needle body shape, but various features as shown in FIGS. You can choose a shape with. Also, the mechanism for moving the needle plate has an optimum shape in relation to the movement obtained thereby. It can also be chosen rather than the desired safety. For example, FIG. 7 shows that the needle tip of the needle body is lower than the base bent part that is the protective convex part and does not go outside the surface formed by the protective convex part, and is highly safe, and FIG. 8 is easy to enter deep inside the loop. It is.

  FIG. 15 shows a method of making a needle plate by a method different from the method of inserting the needle body into the substrate. The steel plate is cut into the shape of reference numeral 6 with a laser, then the needle body is molded to smooth the surface, and this is applied to the substrate. Install and produce. At first, this needle was processed by utilizing the established manufacturing techniques for sewing needles such as cotton needles, futon needles and sail difference needles, but it is only necessary to select a method suitable for the purpose.

The needle plate is usually exposed on the bottom of the cart that is not touched by people who are not visible to the human eye, but is exposed when it falls or floats in the air if it fails to be fixed. It is dangerous against. This is the case where you should not wake up failing to fix. It may also be exposed in the process passed to the caterer. Although the present invention takes these safetys into consideration, the needle tip may be rounded as shown in FIG. The loop carpet is sufficiently stuck in the loop carpet with the tip shape of the needle body.

  Reference sign c in FIG. 16 is a safety measure presented in Patent Document 13, and reference numeral 7 is a needle cover.

In addition, a cover plate for the needle tip may be prepared separately for insertion, or may be built in the bottom of the cart.

There are two types of loop carpets: Wilson carpets that pass pile yarn from below into hemp fabrics, and patquet carpets that are stabbed from above. In either case, the loop yarn is connected at the beginning, and the upper surface is connected in a loop shape. Generally, the back of this fabric is coated with glue to fix the loop yarn. This fixing makes the loop yarn independent for each loop, which is preferable for the present invention.

  In the loop carpet, when the needle body is not inserted into all the adjacent loops, one loop is pulled, and the pile thread of the adjacent loop connected to the thread is shifted and dragged, and the pulled loop is In order not to stretch, it is desirable to fix the pile yarn by applying glue on the backside of the fabric.

  As described above, the passenger aircraft with the most significant problem has been described as a means for solving the problem. This means is common to all. A cart that is moved on a moving vehicle is operated when there is a risk of shaking, and the main feature is that the cart is fixed to the loop carpet on the floor at any time during the movement.

  A cart equipped with a needle plate to which a large number of needle bodies are fixed according to the present invention is fixed to the floor surface by inserting the needle body of the needle plate into a carpet loop or dense fiber when subjected to abnormal vibration. Has been. This prevents the cart from moving up and down or sideways and prevents the cart from becoming a weapon and harming people. Furthermore, considering the shape of the needle tip, there is a great advantage that the person who handles it can use it with peace of mind during use in the cabin, in the car, on the ship, or during preparations in the catering department.

A photograph of a needle plate that has a bent base at the futon needle and uses this as a protective projection Structural diagram of an example of a needle plate Diagram of the needle plate with the needle body parallel to the bottom of the needle plate Illustration of the needle plate with the needle tip of the needle body bent inward Diagram of a needle plate with the needle tip parallel to the bottom of the needle plate and a protective projection here Diagram of the needle plate with the needle body parallel to the bottom surface of the needle plate and advantageous for force Illustration of a needle shape with the needle body parallel to the bottom of the needle plate and the needle tip within the protective projection Diagram of a needle plate that has a bent base at the needle body and uses this as a protective convex part, and the needle tip has an outward shape that is easy to hang from the loop. A needle plate with a bent base at the needle body to form a protective convex part, and a needle body with the needle tip positioned lower than the protective convex part. Diagram of throat plate with protective convex part separate from needle body Diagram of a throat plate with a protective projection and a heel that is integral with the throat plate It is a structure schematic diagram of the fixture by a slide rail. Diagram showing various movements of the needle plate It is the figure which showed various forms and movement of a needle plate It is a figure of the method of manufacturing a needle plate from a steel plate. The figure of patent document 13 which considered the safety | security of the needle body It is a structural schematic diagram of the mechanism which stabs a needle body into a carpet by rotational movement. It is a structure schematic diagram of the fixture which moves a needle plate using a rack and pinion. It is a structure schematic diagram of the fixture which moves a needle plate using an oil cylinder. It is a structural schematic diagram of the mechanism which pierces a needle body into a carpet by circular motion. It is a structure schematic diagram of the fixture performed by the mechanism which slides diagonally. It is a structure schematic diagram of the fixture performed by the mechanism which slides diagonally. It is a structure schematic diagram of the fixture performed with a sliding mechanism. The data of the G sensor of the accident aircraft It is a picture of the internal situation of the accident aircraft that encountered turbulence It is a structural diagram of a loop carpet A cross-sectional photograph of a loop carpet It is a picture of the surface that the loop top of the loop carpet makes

A cart used on the floor that is predicted to have large vibrations in the vertical or horizontal direction, and is expected to detect or detect abnormal movement before the large vibrations are attached to the cart. The needle body of the needle plate is inserted into the loop carpet immediately before. The mechanism is simple, the needle plate with the needle body protected by the protective convex part is pressed against the loop carpet, the protective convex part and the needle body are pushed into the loop carpet, and moved sideways in the needle tip direction. Then, securely insert the needle body into the loop thread to secure the cart safely.

The embodiment shown in FIG. 1 is a photograph of an embodiment of a needle plate that is the basis of the device of the present invention, and FIG. 2 is a cross-sectional view showing this structure. The needle used for this was a futon needle having a diameter of 1.0 mm, which was bent into two needles at two locations and quenched. The reason why it is bent into a Z shape at two locations as shown in the drawing is to fix the direction of the needle tip at the root. In this way, 153 needles are inserted into a 100 × 200 mm aluminum plate substrate with reference numeral 1, the position is solidified, and an epoxy resin with reference numeral 3 is poured onto the substrate and solidified. The needle body is apparently flat, and the needle tip is safe when touched normally. Moreover, when a thing hits from the outside and applies a strong force, the needle body in that part bends the safety inside.

This needle plate is prepared with a needle body that has been bent and quenched in advance. It suffices if a large number of needle bodies are provided in parallel, and a number of holes may be formed in the substrate, and needles may be inserted and fixed thereto.In addition, an injection mold is provided with a large number of needle holes. After inserting a large number of needles, a molten resin may be poured and integrally molded. A hole may be formed in the metal plate, and a needle body formed in an L shape may be inserted into the hole, and then fixed by brazing on the back surface. The needle shape is selected according to the required performance.

FIG. 3 shows the shape of the needle body, and the interval, width and shifting method of planting the needle plate are determined in accordance with the purpose of protecting the needle tip by the protective convex portion.

In FIG. 4, the needle tip of the needle body is bent inward to make it difficult for the needle tip to come out.

FIG. 5 shows a needle body shape that aims to further advance the fixation of the throat plate and the loop carpet affixed to the floor surface when the needle tip is inserted into the loop thread and then moved and inserted. is there.

FIG. 6 shows the shape of a needle body that takes into account the strengthening of the resistance to the force that tries to lift the needle plate upward from the loop carpet.

FIG. 7 shows the shape of a needle body in which the needle tip of the needle body is hidden behind the apparent surface formed by the protective projection and the needle body goes straight in the loop carpet.

FIG. 8 shows a needle body shape in consideration of the strong force of fixing the loop carpet as the needle plate advances in the needle tip direction, and the great function of protecting the needle tip at the root bent portion.

FIG. 9 is an arrangement shape of the needle body showing a desirable example in which the positions of the needle tip and the bent portion take into account the function of protecting the needle tip.

In the embodiment shown in FIG. 10, a protective convex portion is separately formed with a wire and arranged at a planar position where the function of protecting the needle tip of the planted needle body is enhanced.

FIG. 11 shows a protective projection formed integrally with a needle plate in the shape of a hook, and a needle body is planted on the needle plate. Further, reference numeral 5b designates an unevenness on the hook and protects the needle tip of the needle body at the same time. This is intended to increase the embedding function.

The embodiment shown in FIG. 12 is a mechanism for attaching a needle plate to the bottom surface of the cart. This embodiment basically has a structure in which the rail of the slide guide 11 is placed horizontally and the needle plate is moved laterally by the roller of the slide block 15. The up and down movement is performed along the 18 slide bar supporting the slide guide,
It is always pushed downward by a spring 10. The slide bar has a stopper 19, which can resist the force that lifts the cart upward after the loop carpet and throat plate are fixed. There is also a method in which a spring function is added to this stopper, and a mechanism for loosening the spring of reference numeral 10 is added after the needle plate is fixed to further strengthen the fixing.

It is the lock | rock of the code | symbol 9 that is supported on the upper part so that a needle plate may not touch a floor surface. This lock is released when the starting wire 8 is pulled, the slide guide rail is lowered, and the needle plate is pressed against the floor surface. When the rail of the slide guide is lowered, the tip of the needle plate fixing slide pin 12 is pushed up by touching the floor surface, and the needle plate fixing lock 13 is released.

If the needle plate fixing lock is released when the protective convex portion and the needle body are indented into the loop carpet while the needle plate is pressed against the floor surface, the needle plate pulled by the spring 14 is The body is moved in the direction of inserting into the loop carpet, and the fixation between the bottom surface of the cart and the floor surface is completed. According to the prototype, this movement was completed in less than a second.

When the shaking has settled down and it is safe, or when the shaking has settled while there is some trouble with a passenger who is not wearing a belt, it is necessary to quickly remove the cart from the aisle. For releasing the fixation, when the release wire 16 is pulled, the needle plate is moved in the direction of pulling out the needle body, and the needle plate fixing lock is applied. Next, the pulling wire is pulled to raise the needle plate, and the lock that supports the needle plate on top is applied.

In order to perform this series of operations, the state of performing with a wire is illustrated as an example, but it may be performed with a coaxial cable, or with electric power or hydraulic pressure, and here, through a simple manual mechanism. The working principle is shown.

In the embodiment shown in FIG. 17, two needle plates arranged in parallel move in opposite directions so as to be different from each other, so that the needle body sandwiches the loop carpet, and an arc such as symbol f or symbol g in FIG. 13. It is a mechanism that inserts the needle body into the loop carpet by the movement of.

A rotating plate 20 is moved, and is normally lifted by a spring 21. When the stepping petal of reference numeral 22 is stepped on, the needle plate is pushed down by the movement of the arc, and is stopped at a necessary position by the ratchet of reference numeral 23. It is characterized by the feeling of the person who operates it to this fixed degree.

If you step on it when you feel anxious, the tip of the needle is first stuck in the loop of the loop carpet. If you step further, the needle will go deeper, and the strength of fixing the bottom of the cart to the floor will increase.

When the release wire 24 is pulled, the ratchet is released and returned to the normal position according to the movement of the spring.

The embodiment shown in FIG. 18 is a structural diagram of a mechanism using a rack and pinion. There is a feature that the needle plate moves as indicated by reference numeral c in FIG. 17 and can take a desired movement similar to this movement. Reference numeral 25 is a groove cam plate, and the needle plate is lowered and moved laterally according to the shape of the groove cam of reference numeral 26 cut out here.

The rotational lever 27 is connected to the pinion gear 28. When the rack gear 29 is moved to the right in the figure, the two left pinion gears rotate clockwise, and the needle plate moves down to the left along the shape of the groove cam. Since the right two pinion gears are connected via a rack gear and an intermediate gear 30, the right two pinion gears rotate counterclockwise and the needle plate moves downward and moves to the right.

In this way, the two needle plates are simultaneously lowered and then moved in the opposite direction. As a result, the needle plate is lowered and moved in the direction of the needle tip of the needle body, and the shape of this movement can be freely made by the shape of the groove cam.

The embodiment shown in FIG. 19 has a needle plate shape indicated by reference numeral c in FIG. 14, and has a mechanism for piercing the loop carpet by the movement indicated by reference numeral b in FIG. In this embodiment, the needle plate hollow bar 31 is formed in a square shape, and the needle plate hollow bar 32 slides while maintaining the same surface. It has a structure in which the needle sticking direction on the bar is reversed, is suspended on the bottom of the cart in a freely moving state, is placed on the top with a spring of reference numeral 33, and a needle plate hollow bar with a hydraulic cylinder of reference numeral 34 when necessary Then, the needle plate hollow bars 31 and 32 are slid in the directions 36 and 37 with the hydraulic cylinder 35.

This hydraulic pressure is sent by a hydraulic pump with a stepping petal 38. In FIG. 19, the reference numerals 39 attached to the cylinders indicate the connecting portions of the oil pipes, and the pipes are omitted. This movement can be performed not only by hydraulic pressure but also by a combination of a coaxial wire and a spring or by electric drive.

  The embodiment of FIG. 20 is a method of rotating the needle plate. Even if the aircraft is moving up and down and the cart is lifted up, if the loop carpet is missed by the needle plate, it can continue to rotate until it touches the loop carpet and grabs the loop yarn.

  As a command for operation, the coaxial wire 40 is loosened and the slip motor 41 is switched on at the same time. The support bar of reference numeral 43 pulled downward by the spring of reference numeral 42 is lowered, and the circular needle plate of reference numeral 46 starts to rotate clockwise by the gears of reference numerals 44 and 45. Then, the rotation causes the spring of reference numeral 47 to rotate. Thus, the needle plate is lowered until the needle body presses against the loop carpet, and in the pressed state, the needle body rotates until the needle plate meshes with the loop thread and stops the rotation of the needle plate. When the lifted cart comes into contact with the floor and the needle plate 46 is engaged with the carpet, the slip motor stops the rotation of the needle plate, and the cart is fixed to the carpet.

When the airframe has finished shaking, it is necessary to immediately release the cart and return to the galley for storage. For quick release, the slip motor is reversely rotated at the same time that the coaxial wire 40 is pulled. When the needle plate 46 is disengaged from the loop carpet and is pulled up by the support bar 43 and separated from the loop carpet, the rotation becomes light and stops as a sensor. At this time, the needle plate is at the uppermost position, and in this state, the original shape is awaited for the next operation instruction.

The embodiment shown in FIGS. 21 and 22 has a needle plate shape indicated by reference sign a in FIG. 14 and has a mechanism for piercing the carpet by the movement indicated by reference sign d in FIG. This will be described with reference to FIG. Reference numerals are omitted for the same parts in FIG.

In this embodiment, the same as the needle plate and the slide rail of reference numeral 50 fixed to the bottom plate or bottom mounting plate of the reference numeral 48 with a fixture having a triangular or trapezoidal side shape of reference numeral 49 with an inclination. The needle is inserted by a slider of reference numeral 52 fixed by a fixing tool of reference numeral 51 that is inclined. In other words, the needle plate moves by inserting the needle into the loop carpet by a parallel movement.

The needle plate of FIG. 22 has a hook-shaped protective convex part integral with the needle plate as shown in FIG. 11, and a straight needle body that is not bent is buried between the hook and the hook of reference numeral 53. Suitable for movement of d. The throat plate of FIG. 21 has an L-shaped needle body, but in the case of the movement of d of FIG.

  In the case of FIG. 22, the inclination of the slide rail of reference numeral 50 is generally the same angle as the inclination of the needle body of reference numeral 54 in the needle plate of reference numeral 55. However, the surface condition of the loop carpet and the caster It may be preferable to change the angle depending on conditions. In the case of FIG. 21, the angle suitable for piercing is smaller than in the case of FIG.

  The needle plate 55 is always pulled up to the stopper in the direction in which the needle is pulled out by the spring 56. When the toggle clamp denoted by reference numeral 57 is tilted, the needle plate denoted by reference numeral 55 is pulled by the wire denoted by reference numeral 58 via the pulley, and moves downward in the direction of insertion. During normal movement, the needle must not touch the loop carpet. Since the needle is inserted from the high position, the length of the slide rail is large so that the slider moves on the slide rail.

  In the case of the prototype, the length of the needle is 20 mm, the height of the ridge of the protective projection is 6 mm, the inclination of the needle body is 20 degrees, the angle of the slide rail is 20 degrees, and the moving distance of the slider is 30 mm. The vertical movement is 12 mm, the distance between the tip of the needle and the loop carpet when not in operation is 9 mm, the depth of penetration of the needle into the loop carpet is about 2 mm, and the loop carpet is not in contact with the loop carpet during normal operation. The fixation of was good.

If the position of the toggle clamp in FIG. 22 is extended to the top of the cart by extending the wire, it can be used in a normal cart. Instead of a toggle clamp, a special ratchet mechanism petal may be placed next to a normal stepping brake petal. In addition, there is also a method of automatically performing the release manually. In any case, whether it is manual operation, stepping operation or automatic depends on how it is used, and it is better to choose it accordingly.

  The embodiment shown in FIG. 23 has a needle plate shape indicated by reference numeral f in FIG. 14, and has a mechanism for piercing the loop carpet by the movement indicated by reference numeral g in FIG. In this embodiment, the movement of the arc created by the reference crank is used, and the needle moves down along the arc produced by the reference numeral 59.

The needle plate 55 is raised approximately 45 degrees by the spring 60, and when it is stepped on the petal 61, it is pulled down by the wire 62. In this case, a ratchet is provided on the shaft denoted by reference numeral 63, and the needle is stopped in accordance with the situation where the loop carpet is captured. Reference numeral 64 denotes a ratchet release string.

Using a needle plate that is embedded and integrated with many needles in one direction, and the needle body is inserted into the loop carpet in the direction of the needle tip, the cart holding the needle plate is fixed to the floor surface. And protected from large vibrations. If this mechanism is attached to a cart used in a passenger aircraft and operated in response to the shaking, it will be much safer against accidents caused by severe shaking caused by turbulence. Although it is a blind spot of the current technology and there is no specific requirement, the potential demand greatly contributes to safety. It leads to industrially effective results.

DESCRIPTION OF SYMBOLS 1 Substrate board 2 Needle body 3 Resin which fixes needle body 4 Protective convex part comprised solely of wire 5 Protective convex part formed integrally with throat plate 5b Protective convex part with unevenness integrally formed with throat plate 6 Cutting line when making a needle with a laser 7 Safety plate that hides the needle tip 8 Start-up wire 9 Lock that supports the needle plate at the top 10 Spring 11 Slide guide rail 12 Needle plate fixing slide pin 13 Needle plate fixing lock 14 Spring 15 Roller 16 Release wire 17 Lifting wire 18 Slide bar 19 Stopper 20 Rotating plate 21 Spring 22 Foot petal 23 Ratchet 24 Release wire 25 Groove cam plate 26 Groove cam 27 Rotating lever
28 Pinion gear 29 Rack gear 30 Intermediate gear 31 Needle plate hollow rod 32 Needle plate hollow rod 33 Spring 34 Hydraulic cylinder 35 Hydraulic cylinder 36 Sliding direction 37 Sliding direction 38 Hydraulic pump foot petal 39 Oil pipe connection 40 Coaxial wire 41 Slip motor 42 Spring 43 Support bar 44 Gear 45 Gear 46 Circular needle plate 47 Spring 48 Cart bottom plate 49 Trapezoidal fixture 50 Slide rail 51 Fixture 52 Slider 53 体 54 Needle body 55 Needle plate 56 Spring 57 Toggle clamp 58 Wire 59 Crank rotation plate 60 Spring 61 Petal 62 Wire 63 Ratchet shaft 64 Ratchet release string 70 Start of shaking recorded in G data 71 0G recorded in G data
Minus G recorded in 72 G data
73 Broken ceiling 74 Loop top

In an example of an accident, United Airlines Boeing 747 aircraft (374 passengers, 19 crew members) encountered turbulence over the Pacific Ocean at midnight on December 28, 1997, and a jumped cart broke through the ceiling ( FIG. 25) . Passengers fell down on the cart that broke through the ceiling and fell down.

From this story, you can read the change in G caused by up and down shaking. G, which is close to 0G, which is weightless, and minus G are frequently applied, and at least once approaches minus 1G. This agrees well with the content of FIG. 24 , which is a graph showing changes in G in other accident examples. Here, it begins to oscillate at reference numeral 70, and oscillates up and down at intervals of about 2 minutes. At reference numeral 71 after about 20 minutes, there is a large decrease in G, which exceeds 0G. Further, the code 72 after 6 minutes exceeds 0G. There are about 10 values close to 0G. In this case, it seems that the rear of the aircraft was a large negative G. In the case of a negative G, people and objects are jumped up toward the ceiling, in other words, the ceiling is down and falls.

FIG. 24 is an example of the G sensor records that remained in the fly and the recorder in the accident, which makes it possible to better understand the situation where a large shake suddenly comes after a small vibration. This is an example in which the shaking time is particularly long, but when viewed here, there are about 10 drops that show a value close to 0 G in 30 minutes.

This value close to 0G is that of the place where the instrument is placed, and that place is in the cockpit, which is the front part of the aircraft, and the rear passenger room located farther from the center of gravity is farther than the front part of the aircraft. Since it shakes greatly, when the value is close to 0G in the record of FIG. 24 , it becomes G on the minus side that moves the object upward in the rearmost guest room, and at this time, it seems that people and objects have fallen toward the ceiling.

The upper surface of the loop carpet used in the passenger plane is a small convex portion with loop yarn (hereinafter referred to as the top of the loop) as shown in the structural diagram of FIG. 26 , the photograph of FIG . 27 , and the photograph of FIG. When a part of the surface of this loop carpet is pushed from the top with a thin protruding protective convex part, it is recessed and recessed, and the part that is not pressed protrudes relatively Yes. The present invention uses this property of the loop to dent a portion of the loop carpet and hook the needle onto the loop yarn on the remaining surface to secure the cart.

As shown in the structural diagram of FIG. 26 , the loop carpet is a loop yarn rolled into a loop of reference numeral 74. When viewed from above, the loop yarn forms the top of the loop as indicated by reference numeral 74 in the photograph of FIG. Is used.

The floor of the passenger plane is made of a lightweight material such as a honeycomb, and the carpet is laid on top for the purpose of protecting it from local loads such as sharp heels. Its carpets, bundled many yarns as the structure of FIG 26, a loop carpet is rounded in a loop. The use of the loop carpet comes from the necessity of serving a cart caster to make it easier to roll, and the present invention uses this. In the structure diagram of FIG. 26 , there are three yarns. However, in the actual case, as shown in the photographs of FIGS . 27 and 28 , more than 100 yarns are twisted. Power to have is strong.

Normally, the loop direction of the carpet loop on the floor of the passenger aircraft is such that the entire floor of the fuselage is aligned in the same direction, but the direction of the loop yarn at the top of the loop is not necessarily uniform as shown in the photograph of FIG . The direction in which the needle is hooked is desirably aligned in a direction in which it is easy to be inserted into the loop, but it is not necessarily a necessary condition, and may be one of the front and rear, the lateral direction, or the diagonal direction, and the required amount of thread in the top of the loop. If you select the direction that is easy to make in the mechanism and move it, the fixed function will be demonstrated.

Although the loop yarn is shown as a parallel yarn in the structural diagram of FIG. 26 , it is actually twisted, and the pile is closely sewn in the same direction on a fabric such as hemp as shown in the photograph of FIG. However, since the fibers are twisted, the loop is twisted and the direction of the top of the loop becomes random as shown in the photograph of FIG. Since the direction of the fiber at the top of the loop is not fixed in this way, the needle pierced in a certain direction catches any fiber in the loop. It also functions effectively between fibers and tight gaps.

A photograph of a needle plate that has a bent base at the futon needle and uses this as a protective projection Structural diagram of an example of a needle plate Diagram of the needle plate with the needle body parallel to the bottom of the needle plate Illustration of the needle plate with the needle tip of the needle body bent inward Diagram of a needle plate with the needle tip parallel to the bottom of the needle plate and a protective projection here Diagram of the needle plate with the needle body parallel to the bottom surface of the needle plate and advantageous for force Illustration of a needle shape with the needle body parallel to the bottom of the needle plate and the needle tip within the protective projection Diagram of a needle plate that has a bent base at the needle body and uses this as a protective convex part, and the needle tip has an outward shape that is easy to hang from the loop. A needle plate with a bent base at the needle body to form a protective convex part, and a needle body with the needle tip positioned lower than the protective convex part. Diagram of throat plate with protective convex part separate from needle body Diagram of a throat plate with a protective projection and a heel that is integral with the throat plate It is a structure schematic diagram of the fixture by a slide rail. Diagram showing various movements of the needle plate It is the figure which showed various forms and movement of a needle plate It is a figure of the method of manufacturing a needle plate from a steel plate. The figure of patent document 13 which considered the safety | security of the needle body It is a structural schematic diagram of the mechanism which stabs a needle body into a carpet by rotational movement. It is a structure schematic diagram of the fixture which moves a needle plate using a rack and pinion. It is a structure schematic diagram of the fixture which moves a needle plate using an oil cylinder. It is a structural schematic diagram of the mechanism which pierces a needle body into a carpet by circular motion. It is a structure schematic diagram of the fixture performed by the mechanism which slides diagonally. It is a structure schematic diagram of the fixture performed by the mechanism which slides diagonally. It is a structure schematic diagram of the fixture performed with a sliding mechanism. The data of the G sensor of the accident aircraft It is a picture of the internal situation of the accident aircraft that encountered turbulence It is a structural diagram of a loop carpet A cross-sectional photograph of a loop carpet It is a picture of the surface that the loop top of the loop carpet makes

Claims (6)

The bottom of a cart with casters has a large number of needles planted in parallel at the same height. It has a thin protective convex part and is equipped with a needle plate that is integrated in the same direction as the needle body. The protective convex part of the loop carpet is pressed against or while pressing the needle plate against the loop carpet. It has a mechanism that sinks the needle body into the loop thread and moves it in the direction of the needle tip. This mechanism activates the needle body into the loop carpet and the needle plate into the loop carpet. The cart with casters is fixed to the floor surface on which the loop carpet is laid, and the cart is fixed to the floor surface when strong vibration occurs in the vehicle. , The vehicle experiences abnormal shaking Equipment to ensure the cart of safety when. The safety of the cart when the vehicle encounters abnormal shaking according to claim 1, characterized in that the shape of the needle body is L-shaped and the base bent portion of the needle body is a protective convex portion. To ensure the equipment. The vehicle according to claim 1, wherein the vehicle has an abnormal shaking, wherein the vehicle has a thin parallel heel, and the needle body is planted in parallel with the heel using the heel as a protective convex portion to form a needle plate. A device that ensures the safety of the cart. 2. The safety of the cart when the vehicle encounters abnormal shaking according to claim 1, characterized in that it is provided with a protective projection with a wire equal to or slightly higher than the height of the needle tip in the vicinity of the needle body. Device to do. Loop the loop carpet by making it into a needle plate arranged in multiple rows so that the sliding direction of the needle point of the needle body and the protective convex part is in the circumferential direction of the concentric circle, and pressing it downward and rotating it in the needle tip direction. A device for ensuring the safety of a cart when encountering abnormal shaking according to claim 1, characterized in that a needle body is inserted into the needle. The bottom of the cart is equipped with a needle plate that integrates a needle body that can be inserted into the loop carpet and a convex portion that protects the needle tip. When necessary, the needle plate is lowered and moved in the needle tip direction. A mechanism is attached, and this mechanism normally fixes the needle plate at a position away from the floor surface.When vibration occurs, the needle plate is lowered and moved in the direction of the needle tip. The vehicle is characterized in that the needle body is inserted into the loop thread of the loop carpet, and the cart is fixed to the floor surface by this operation, and when the fixation is unnecessary, it is released and returned to the original position. A way to ensure the safety of your cart when you encounter unusual shaking.

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