JPH0647381B2 - Aircraft car restraint system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Industrial field of use" The present invention relates to a restraint device for an aircraft cart.

"Prior art", "Problems to be solved by the invention" In an aircraft, for example, a cart used for servicing food and drink to passengers is stored in a storage space provided inside the aircraft when not in use. Has been done. Therefore, the stored cart is fixed by a restraint device in order to prevent accidents such as the cart going out of control due to a sudden tilt of the aircraft during flight and damage to the inside of the aircraft.

However, in the conventional restraint system, the cart is restrained and unconstrained by engaging and disengaging the engaging plate, the stopper, and the like that constitute the restraint device provided on the lower surface of the cart with the restraint metal fitting projecting on the floor of the storage room. Since all the carts are configured to operate, it is necessary to provide all the carts with such a complicated structure. Therefore, the carts are expensive, there are many failures, maintenance is troublesome, and weight is increased. In addition, it has the drawback that the floor of the containment must be reinforced in order to attach the restraint.

"Means for Solving the Problem" The present invention has been made in view of the above circumstances to solve the above problems of the prior art. It is used when storing in an in-cabin storage, and includes an engaging portion and an operation petal arranged on the cart main body side, and a restraint metal fitting arranged on the storage side and comprising a main body portion and a bracket portion. To have. First, the concave engaging portion is provided on at least one end of the lower surface of the cart main body, and the upper and lower ends of the lower surface of the cart main body can be pivoted in the vertical direction in cooperation with each other. The operation petals thus constructed are arranged to face each other. Both operation petals are connected by a connecting rod via a bell crank that is horizontally rotatably provided on the lower surface of the cart body, and are in a normal state by the urging force of a spring interposed between the operation body and the cart body. When one of the operation petals is rotated downward from the normal state against the urging force of the spring, the other operation petal is also rotated downward, and either one of the operation petals is rotated downward. When the operation petal of (1) is returned to the upper normal state, the other operation petal is also interlocked to return to the upper normal state.

Further, in the restraint fitting, an engaging arm having an engaging protrusion that is configured to be disengageable from the engaging portion, and the tips of the engaging arm are spaced below each other by a predetermined distance. The main body portion having a release arm positioned therein is pivotally attached to the bracket portion so as to be vertically rotatable. The bracket portion is fixed to a back wall surface in the storage, and is interposed between the main body portion and a spring for urging the main body portion upward,
The engaging protrusion of the engaging arm of the main body portion biased upward is provided with a stopper that restricts the rotation of the engaging arm so as to always maintain the engageable position with respect to the engaging portion.

At the same time, the engagement protrusion provided on the engagement arm of the main body of the restraint fitting can abut the lower end of the cart main body that has advanced into the storage, and this abutment resists the urging force of the spring. However, there is a relationship of being rotated downward from the engageable position, and when the cart body further advances into the storage,
The cart can be opposed to the engaging portion of the cart body, is returned to the engageable position by the urging force of the spring, engages with the engaging portion, and can restrain the cart. Further, one of the operation petals has a positional relationship which normally faces between the engagement arm and the release arm of the main body portion of the restraint fitting in the restrained state of the cart, and the other one of the operation petals. When rotated downward from the normal state in conjunction with the operation petal, the engagement arm and the engagement protrusion are rotated downward from the engageable position against the biasing force of the spring through the release arm. It is set, and it is possible to release the engagement between the engagement protrusion and the engagement portion and release the restrained state of the cart.

[Operation] When the cart is constrained, the cart positioned so that the end of the engaging portion is on the front side corresponds to the engaging portion and the restraint metal fitting provided on the inner wall surface of the storage. The lower end of the cart body that abuts on the engaging protrusion of the engaging arm that can be engaged with and disengaged from the engaging portion, forces the engaging arm by the lower end. When the engaging arm and the engaging projection are in a positional relationship where the engaging portion and the engaging protrusion face each other, the engaging arm returns to the position where the engaging state is maintained, and the engaging portion The engaging projection engages to restrain the cart. In this restrained state, the tip of the operating petal in the non-actuated state is located between the engaging arm and the release arm of the restraint fitting.

Next, when releasing the restraint state of the cart in the restraint state, in the retracted state, the operation petal located between the engagement arm and the release arm is lowered by depressing the operation petal located in the front. Rotate in the direction. Therefore,
With the rotation of the operation petal, the engagement arm also rotates downward, the engagement state between the engagement portion and the engagement projection is released, and the restrained state of the cart is released.

By the way, in the restraint system of this aircraft mounting cart,
On the cart side, only a slightly concave engaging portion and operating petal are arranged. In other words, like this type of conventional example,
It is no longer necessary to provide the main constituent members of the restraint system that require strength, have a complicated structure, and have a large number of parts, for all carts. In the present invention, the restraint fittings are collectively provided on the side of the storage place. Therefore, the cost of each cart is reduced accordingly, superposition is reduced, failures are reduced, and maintenance is facilitated. Further, in this restraint device for an aircraft mounting cart, restraint metal fittings such as a main body portion and a bracket portion, which are main constituent members, are provided on a back wall surface where a frame and the like in the storage are present. Therefore, as compared to the case where it was necessary to project these on the floor surface of the containment and to reinforce the floor surface which is generally weak as in the conventional example of this kind, such reinforcement becomes unnecessary, From this aspect, the cost is excellent.

[Examples] Hereinafter, the present invention will be described based on examples shown in the drawings.

1 to 4, reference numeral 1 is a cart for mounting on an aircraft, 2 is a main body of the cart 1, and a concave engaging portion is provided in a central portion of an end portion of the lower surface of the main body 2 opposite to the door 4. 3 is formed. Reference numerals 5 and 5 denote operation petals formed by bending the rear end mounting portion 5c upward and having a substantially <shape on the side surface.
Each of the shafts 6 has a bent portion 5b horizontally mounted on the main body 2 so that the tip petal portion 5a is located slightly below the lower surface of the main body 2.
It is pivotally attached to the upper and lower parts in a freely rotatable manner. Reference numeral 7 denotes a bell crank provided in the central portion of the lower surface of the main body 2 so as to be rotatable in the horizontal direction. The both ends of the bell crank 7 and the ends of the mounting portions 5c of the operation petals 5, 5 are connected to each other by a connecting rod. 8, 8
The operation petals 5 and 5 are rotatably connected to each other via a coil spring 9 interposed between one end of the bell crank 7 and the main body 2 so that the petal portions 5a and 5a are always connected. It is configured to maintain an upper normal state which is a substantially horizontal position. Therefore, when the operation petals 5 and 5 are depressed by depressing one of the operation petals 5, the other operation petal is also rotated downward, and by releasing the foot from the operation petal 5, the operation petals 5 and 5 are returned to the normal state. Has become.

Reference numeral 10 is a restraint fitting, and the restraint fitting 10 is configured as follows. That is, the main body 11 is composed of the main body 11 and the bracket 12, and the main body 11 has a slide surface 14a that descends and inclines on the outer surface of the distal end, and an engaging protrusion 14 having a width for engaging with the engaging portion 3 is hung on the upper end of the distal end. Engagement arm 13 provided
And a substantially arcuate shape that is formed in such a manner that the tips of the engaging arms 13 are bifurcated from the middle of the engaging arms 13 so that their tips are located below each other at a predetermined interval, and that the side surfaces warp upward. The release arm 15 of FIG.
The bracket portion 12 is provided on the base plate 12a with both side plates 12b standing upright with a gap wider than the width of the body portion 11 in the width direction.
, 12b and a reinforcing plate 12c erected on the base plate 12a so as to cover the upper open ends of the side plates 12b, 12b. The mounting shaft 16 is provided at the center of the side plates 12b, 12b.
Is horizontally installed, and the main body 11 is rotatable with respect to the bracket 12 by inserting the mounting shaft 16 into a mounting hole (not shown) formed in the widthwise direction of the base end of the main body 11. Is pivotally attached to. Reference numerals 18 and 18 denote torsion springs. These torsion springs 18 have their coil portions 18a attached to the side plates 12b.
The main body 11 is fitted with and supported by a mounting shaft 16 located between the arm 18b and the main body 11. One arm 18b is provided in a locking hole 19 formed in the side plate 12b, and the other arm 18c is provided in the main body 11. The main body 11 is locked to the lower surface, and is constantly rotated upward by the biasing force of the torsion spring 18.
Reference numeral 20 denotes a stopper that is erected on the inner side surface of the side plate 12b in order to regulate upward rotation of the body portion 11 due to the urging force of the torsion spring 18, and the body portion 11 locked by this stopper 20 is The engagement arm 13 is configured to always maintain a substantially horizontal normal state, and the engagement protrusion 14 is configured to always maintain an engageable position with respect to the engagement portion 3.
When the cart 1 is restrained, the restraint fitting 10 engages the engagement projection 14 of the engagement arm 13 with the engagement portion 3 of the cart 1, and the tip of the petal portion 5a is between the engagement arm 13 and the release arm 15. The base plate 12a is fixed to the wall surface 30a at the inner part of the storage 30 by a proper means in a positional relationship of facing the above.

The engaging projection 14 provided on the engaging arm 13 of the main body 11 of the restraint fitting 10 can come into contact with the lower end of the cart main body 2 that has advanced into the storage 30. When the cart main body 2 is further advanced into the storage 30 by the downward rotation from the engageable position against the biasing force of the torsion spring 18, the engaging portion 3 of the cart main body 2 The cart 1 is in a planar positional relationship so that it can face each other, is returned to the engageable position by the urging force of the torsion spring 18, and engages with the concave engagement portion 3 to restrain the cart 1. or,
One of the operation petals 5 is in a normal positional relationship between the engagement arm 13 and the release arm 15 of the body 11 of the restraint fitting 10 in the restrained state of the cart 1, and When it is rotated downward from the normal state in conjunction with the other operation petal 5, the engaging arm 13 and the engaging projection 14 are mediated by the contacting release arm 15.
Is set so as to rotate downward from the engageable position against the urging force of the torsion spring 18.
The engaging state of the cart 1 can be released by releasing the engagement between the engaging portion 3 and the engaging portion 3.

Now, when restraining the cart 1 to the restraint fitting 10 configured as described above, the main body 2 is positioned with the side of the door 4 facing forward, and the side of the engaging portion 3 is positioned forward, so that the engaging portion 3 and the restraint fitting 10 are separated from each other. The lower end of the main body 2 comes into contact with the slide surface 14a of the engaging projection 14 by advancing the cart 1 into the storage 30 so that the lower end of the main body 2 pushes down the slide surface 14a. When the engaging arm 13 is forced to rotate downward when the engaging portion 3 and the engaging protrusion 14 face each other, the engaging arm 13 is forced by the torsion spring 18 into a normal state, that is, an engaging state. After returning to the mating position, the engagement projection 14 engages with the engagement portion 3, and the cart 1 is restrained. Next, to release the restraint state,
Since the operation petal 5 located between the engagement arm 13 and the release arm 15 in the restrained state is rotated downward by depressing the operation petal 5 located on the front side (door 4 side) in the storage restrained state, With the rotation of the operation petal, the engagement arm 13 is rotated downward, the engagement state of the engagement portion 3 and the engagement projection 14 is released, and the restrained state of the cart 1 is released.

Now, in the restraint device for the aircraft mounting cart 1 according to the present invention, the engagement portion 3 having a slightly concave shape on the cart 1 side.
And the operation petal 5 is only arranged. That is, unlike the above-described conventional example of this type, it is not necessary to provide the main constituent members of the restraint device for each cart 1 that require strength and have a complicated structure and a large number of parts. Main body 11 and bracket 1 which are the main constituent members
In the present invention, the restraint fittings 10 such as 2 are collectively provided on the side of the storage place 30. Therefore, the cost of each cart 1 is reduced, the weight is reduced, the breakdown is reduced, and the storage management is facilitated. Further, in the restraint device for the aircraft mounting cart 1, the restraint fittings 10 such as the main body portion 11 and the bracket portion 12 which are such main constituent members are provided in the inner portion where the frame in the storage 30 exists. It is provided on the wall surface 30a. Therefore, as in the above-described conventional example of this kind, since these are projectingly provided on the floor surface of the storage place 30, it is necessary to reinforce the floor surface, which is generally weak, as compared with the case where such a reinforcement is required. Is unnecessary, and this is also excellent in cost.

FIG. 5 shows another embodiment of the engaging portion 3. In this embodiment, the engaging portions 3 are provided at both ends of the main body 2. Therefore, when storing the cart 1,
Although it is stored with the door 4 side facing you, according to this configuration,
For example, in the case of the cart 1 having doors at both ends of the main body 2, it is not necessary to check the engaging portion 3 each time when the cart 1 is stowed, and the cart 1 can be restrained regardless of which door side is stowed forward. .

Further, the configuration of the operation petal 5 is not limited to that of the embodiment, and, for example, in a cart having petals for brake operation of the casters 31, the restraint release operation is performed by these petals. Good.

[Advantages of the Invention] As described above in detail, according to the restraint device for an aircraft-mounted cart according to the present invention, it is not necessary to provide a special restraint device on the cart, so that the cost and weight of the cart can be reduced. It is also possible to reduce the number of breakdowns, which facilitates maintenance and management. Furthermore, since it is not necessary to provide restraint fittings on the floor surface of the storage room, there is no need to reinforce the floor. In the past, the problems that the restraint device of this type of cart had in the past have been eliminated, and the effects that it has are remarkable and great.

[Brief description of drawings]

The drawings show the embodiments of the present invention. FIG. 1 is an overall explanatory view showing a restrained state, FIG. 2 is a detailed explanatory view of a part of a main portion of FIG. 1, and FIG. 3 is a bottom view of a cart. FIG. 4 is a perspective view of the restraint fitting, and FIG. 5 is a partially cutaway explanatory view of a main portion showing another embodiment of the engaging portion. In the figure, 1 is a cart, 2 is a main body, 3 is an engaging portion, 4 is a door, 5 is an operation petal, 6 is a shaft, 7 is a bell crank, 8 is a connecting rod,
Reference numeral 9 is a coil spring, 10 is a restraint fitting, 11 is a main body portion, 12 is a bracket portion, 13 is an engaging arm, 14 is an engaging protrusion, 14a is a sliding surface, 15 is a release arm,
16 is a mounting shaft, 18 is a torsion spring, 19 is a locking hole, 20
Is a stopper, 30 is a storage place, 30a is a wall surface, and 31 is a caster.

Claims (1)

[Claims] 1. A restraint device used for storing an aircraft-mounted cart in a stowage in the cabin when not in use, comprising:
It has an engaging portion and an operation petal arranged on the cart main body side, and a restraint metal fitting arranged on the storage side and comprising a main body portion and a bracket portion. First, at least one end portion on the lower surface of the cart main body The concave engaging portion is provided on the lower surface of the cart body, and the operation petals configured to be rotatable in the vertical direction in conjunction with each other are disposed opposite to each other at positions slightly lower than both end portions of the lower surface of the cart body. The operation petal is connected by a connecting rod via a bell crank that is horizontally rotatably provided on the lower surface of the cart body, and is normally held by the urging force of a spring interposed between the operation petal and the cart body. When one of the operation petals is rotated downward from the normal state against the biasing force of the spring, the other operation petal is also rotated downward in conjunction with the operation petal. Petal is always above When it is returned to the position, the other operation petal is also interlocked to return to the upper normal state, and, in the case of the restraint fitting, the engaging portion that is configured to be engageable with and disengageable from the engaging portion. The main body portion having an engagement arm provided with a protrusion and a release arm whose tips are located below the engagement arm at a predetermined interval is pivotally attached to the bracket portion so as to be vertically rotatable. The bracket portion is fixed to the inner wall surface in the storage, and is interposed between the bracket portion and the main body portion to urge the main body portion upward, and the main body urged upward. The engaging protrusion of the engaging arm of the portion is provided with a stopper that restricts the rotation of the engaging arm so as to always hold the engageable position with respect to the engaging portion. The engaging protrusion on the arm is used for the cart It is capable of abutting against the lower end of the body, and due to this abutment, it is in a relationship of being rotated downward from the engageable position against the biasing force of the spring, and when the cart body further advances into the storage. ,
It is in a relationship of being able to face the engaging portion of the cart main body, is returned to the engageable position by the urging force of the spring, engages with the engaging portion, and the cart can be restrained. The operation petal has a positional relationship in which it is in the normal state between the engagement arm and the release arm of the main body portion of the restraint fitting in such a restrained state of the cart, and is linked to the other operation petal. When rotated downward from the normal state, the engagement arm and the engagement protrusion are set to rotate downward from the engageable position against the urging force of the spring via the release arm.
A restraint device for an aircraft mounting cart, wherein the restraint state of the cart can be released by releasing the engagement between the engaging protrusion and the engaging portion.