JPH11299544A - Power source connecting structure of heating cart - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the power source connecting structure of a heating cart which first eliminates the risk of overheat, or the like not only in connection between e.g. new types for 3.15 kW but also in connection between e.g. old types for 2.1 kW to improve safety and acturizes to obtain such a cart simply and easily. SOLUTION: In this power source connecting structure, an AC power source circuit is formed by dividing it into two systems concerning a connector E on the side of a power source of the compartment 26 side of a galley 25 and a connector F on the side of the cart side of a heating cart 13, and the power of e.g. 3.15 kW is supplied by dividing it into a prescribed rate. Namely, the connector E is provided with a first connector terminal group G and a second connector terminal group H, and the connector F is provided with a corresponding first connector terminal group J which can be connected with the group G and a corresponding second connector terminal group K which can be connected with the group H.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a power supply connection structure for a heating cart. That is, the present invention relates to a power supply connection structure of a heating cart provided for an in-flight service in an aircraft, for example.

[0002]

2. Description of the Related Art For example, a heating cart used for in-flight services such as a service of providing meals to passengers in an aircraft is provided with a large number of heaters as electrical components, for example. And when such a heating cart is stored in the galley compartment in the cabin,
A cart-side connector attached to the heating cart is connected to a power-supply-side connector attached to the galley compartment side, so that electric power is supplied to the heater of the heating cart. FIG.
FIG. 1 is a circuit diagram of a power connection structure of a service cart according to a conventional example of this type. As shown in the figure, a power supply side connector A is attached to the compartment side of the galley in the machine, and a cart side connector B is attached to the heating cart side correspondingly. When the cart-side connector B is connected to the power-side connector A, power is supplied to the heater consuming 2.1 kW of power.

The power supply connection structure of such a conventional heating cart will be described in more detail. First, a three-layer, four-wire AC power supply circuit is used as a power supply circuit in the machine, and a conventional power supply side connector A forming such a power supply circuit has a connector terminal group C, The connector terminal group C has connector terminals 1, 2, 3, and 3 for a three-layer AC power supply of 115 V and 400 Hz, and a connector terminal 4 for neutral. Correspondingly,
The cart side connector B has a corresponding connector terminal group D that forms a three-layer four-wire AC power supply circuit. The corresponding connector terminal group D is a corresponding connector terminal for a three-layer AC power supply of 115 V and 400 Hz. 1 ', 2', 3 'and a neutral connector terminal 4'. Therefore,
The corresponding connector terminal group D of the cart side connector B is connected to the connector terminal group C of the power supply side connector A, so that the corresponding connector terminals 1 ′, 2 ′,
3 'and 4' are connected to each other so that the power consumption of the heater on the heating cart side is 2.1.
Electric power commensurate with KW was supplied.

In the figures, reference numerals 5 and 6 denote grounding connector terminals provided on the power supply side connector A, 5 'and 6'.
Is provided in the cart side connector B correspondingly,
This is a ground connector terminal. In the figure, reference numerals 7 and 8 denote connector terminals for a DC control circuit provided on the power supply side connector A, and reference numerals 7 'and 8' denote DC control circuits provided on the cart side connector B correspondingly. Connector terminal for circuit. L is a door switch provided in the DC control circuit.

[0005]

The following problems have been pointed out in such a conventional example. That is, the power consumption of the electrical components used in the heating cart, for example, the heater, depends on various circumstances.
Recently, it has increased from KW to 3.15 KW, which is 1.5 times. That is, in the heating cart for aircraft, the conventional one has a heater having a power consumption of 2.1 KW inside, whereas the recent one has a power consumption of 3.1 KW.
A 5 KW heater is provided inside. Therefore, the electric power supplied from the compartment side of the galley in the aircraft cannot be handled by the conventional 2.1 kW,
Recently, countermeasures are being taken to reach 3.15 KW. And the current usage status is that the power consumption is 2.1K
A conventional heating cart equipped with a W heater and a modern heating cart equipped with a heater consuming 3.15 KW are used together and are simultaneously loaded in the same aircraft. There is even. In addition, the galley compartment side in the machine that supplies power to the heating cart also has a countermeasure to supply 2.1 kW of power as before and a countermeasure to supply the latest 3.15 kW of power. Are present and mixed.

As described above, at present, there are heating carts of both the old and new types (conventional and recent types) of power connection structure, and the power connection structure of the galley compartment side for supplying power to the heating cart is also required. There are both new and old types (untreated and treated). And
As a matter of course, first, if the old type heating cart is supplied with power from the old type of unmeasured heating cart, and furthermore, the new type heating cart is treated with the new type of countermeasure. If power is supplied from, it is as expected and there is no room for problems.
Also, when supplying power to the old heating cart from the new one that has been treated, there is no particular problem, although not as expected. On the other hand, it has been pointed out that if a new type of heating cart is supplied with electric power from an untreated old type, it is extremely dangerous.

The case where the connection is not performed as expected will be described in more detail with reference to FIG. First, a new type of galley compartment, ie, 3.15 KW of power, can be supplied to an old type of heating cart, that is, a conventional heating cart with a heater that consumes 2.1 KW. There is no particular problem when power is supplied from the compartment side. That is, FIG.
On the side of the figure, the old type shown, 2.1 KW of the conventional example
The corresponding connector terminal group D of the cart side connector B is not the old type shown in the drawing, the connector terminal group C of the conventional 2.1 KW power supply side connector A for the 2.1 KW, but is a new type which is not shown and has recently been treated. There is no problem when connected to the connector terminal group of the power supply side connector for supplying 3.15 KW of power.

On the other hand, if a new type of heating cart, that is, a recent heating cart with a heater consuming 3.15 KW, a galley compartment of the old type, that is, 2.1 KW of electric power is used. If electric power is supplied from the compartment where the countermeasure is not taken as compared with the conventional countermeasure, a problem occurs in safety. That is, in the example of FIG. 4, a new type not shown, a recent 3.15 KW cart-side connector, not shown, is not the corresponding connector terminal group D of the conventional 2.1 KW cart-side connector B shown in the figure. The corresponding connector terminal group is a connector terminal group C of a conventional power supply side connector A for 2.1 kW, which is an old type shown in the figure.
In addition, if the connection is erroneously made due to a human error or the like, a problem arises in safety.

That is, in this case, the new type of heating cart consumes 3.15 KW of power and the new type of 3.15 KW cart-side connector has a corresponding connector terminal group and an old type of heating cart. 2.1K
Via the connector terminal group C of the power supply side connector A for W,
A situation occurs in which electric power corresponding to the power consumption is supplied from the galley compartment side. That is, a power supply for supplying power of 2.1 KW for the old type, and a 2.1 KW power supply from this power supply to the connector terminal group C of the power supply side connector A.
2. The capacity is exceeded by wiring for power supply of W, etc.
Power supply of 15 KW is performed. Therefore, such power sources and wirings are heated and overheated, and there is a risk of fire. For example, it has been pointed out that there is a problem in safety such as a very dangerous situation for an aircraft.

The present invention has been made in view of such circumstances, and has been made to solve the above-described problems of the conventional example. In the case of a new type power supply connector for 3.15 KW or a cart connector, for example, The power supply circuit is divided into two systems, and a large amount of power is divided and supplied at a predetermined ratio. First, for example, not only the connection between the new types for 3.15 KW, for example, but also, for example, Secondly, it is an object of the present invention to propose a power connection structure of a heating cart, which can be connected to an old type for a KW without any problem in safety, and which can be realized easily and easily. .

[0011]

The technical means of the present invention for solving such a problem is as follows. That is, the power supply connection structure of the heating cart relates to a power supply connection structure of a service heating cart that can be stored in the galley compartment and has electrical components. And, for the power supply side connector attached to the compartment side of the galley, the cart side connector attached to the heating cart side and leading to the electric component,
Connectable. The power supply side connector is set to supply power divided at a predetermined ratio,
It has a first connector terminal group and a second connector terminal group, and forms an AC power supply circuit divided into two systems. Correspondingly, the cart-side connector includes a corresponding first connector terminal group connectable to the first connector terminal group, the corresponding first connector terminal group being set to supply the same predetermined power as described above, and the second connector terminal. And a corresponding second connector terminal group connectable to the group, and an AC power supply circuit divided into two systems is formed.

As described above, the cart side connector is connected to the power supply side connector, whereby the corresponding first connector terminal group is connected to the first connector terminal group, and the second connector terminal is connected to the first connector terminal group. When the corresponding second connector terminal group is connected to the group, the total of the two systems is set so that electric power corresponding to the power consumption is supplied to the electrical components of the heating cart. ing. On the other hand, the case where the cart side connector is connected to another power source side connector instead of the above power source side connector is as follows. That is, in order to supply only the same power as the power supplied by the first connector terminal group of the power supply side connector, the connector terminal group has only the connector terminal group forming one AC power supply circuit. When the cart-side connector is connected to another set power-supply-side connector and the corresponding first connector terminal group is connected to the connector terminal group, the electrical components of the heating cart are , And is set so that only a predetermined percentage of power less than the power consumption is supplied.

The power supply connection structure of the present invention is configured as described above, and is as follows. In this new type of power supply connection structure according to the present invention, the AC power supply circuit is divided into two systems for the power supply side connector and the cart side connector,
For example, 3.15 kW of electric power can be divided and supplied at a predetermined rate.

Therefore, as expected, the case where a heating cart having a new type of power supply connection structure is stored in the compartment of this new type of power supply connection structure is as follows. In this case, the corresponding first connector terminal group of the new type cart side connector is connected to the first connector terminal group of the new type power source side connector, and the second connector terminal group of the new type power source side connector is connected to the first type. The corresponding second connector terminal group of the new type of cart-side connector is connected. Thus, the two types of AC power supply circuits connected and formed in this way provide a total of power corresponding to the power consumption of a new type of heating cart to, for example, 3.15 kW of electric components. Is done.

[0015] Regardless of this, the case where the heating cart of the new type power supply connection structure is stored in another compartment of the old type power supply connection structure is as follows. In this case, the corresponding first connector terminal group of the new type cart side connector is connected to the connector terminal group of another old type power supply side connector, and the corresponding second connector terminal group of the new type cart side connector is It is not connected to the old type power connector. Therefore, the power consumption of the new type of heating cart is reduced to, for example, 3.15 by the one-system AC power supply circuit thus connected and formed.
Electric power of KW, for example, 2.1 KW of power, which is less than the power consumption, is only partially supplied.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings. 1, 2, 3, and the like are provided for describing an embodiment of the present invention. FIG. 1 is a circuit diagram in the case where connection is performed as expected. 2 and 3 are circuit diagrams when different connections are made. FIG. 2 shows one example, and FIG. 3 shows another example. FIG. 5 is a perspective view of the heating cart, and FIG. 6 is a plan view of the tray.

First, the outline of the heating cart 13 will be described with reference to FIGS. The heating cart 13 is used when an occupant provides a service such as a meal providing service to a passenger in a seat, for example, in an airplane or a Shinkansen vehicle. The heating cart 13 has a box shape including a rectangular top plate 14, a floor plate 15, left and right side plates 16 of substantially square shape, front and rear doors 17 of a vertically long rectangle, and casters 18 at four corners below the floor plate 15. It is attached and moved by hand. A panel made of a heat insulating material is used for the top plate 14, the floor plate 15, the side plate 16, the door 17, and the like, and these are made of aluminum or other light metal and arranged as a frame vertically, horizontally, horizontally, and so on. It is assembled to the corner section.

On the inner surface of the left and right side plates 16 of such a heating cart 13, guide rails 19 are fixedly provided in multiple vertical stages while aligning the height levels on the left and right sides and facing the left and right sides. Between the left and right guide rails 19, a plurality of plate-like trays 20 shown in FIG.
On top of this, food and its dishes are placed. A planar heater 22 as an electrical component is provided in the heater pad 21 of the tray 20, so that the placed tableware, food, and the like are heated and cooked.

The side of the tray 20 has contact terminals 23
The contact terminal 23 is connected to the heater 22 via the wiring 24 and connected to the corresponding contact terminal having a substantially pantograph structure provided opposite the guide rail 19 described above. Has become. Therefore,
The heater 22 of each tray 20 is provided with such wires 24,
They are connected to the cart side connector F via contact terminals 23, corresponding contact terminals, and furthermore, wiring and the like which are passed through the inside of the side plate 16 (not shown). The cart side connector F is attached near the front and rear ends of the top plate 14 of the heating cart 13, so that the front side of the heating cart 13
It is located on the front side, the rear side, and the rear side (either or both).

The heating cart 13 can be stored in a compartment 26 of a galley 25 provided in an aircraft, for example. Compartment 2
Reference numeral 6 denotes a substantially box-shaped front surface which is open as a door for the heating cart 13, and a power supply side connector E is provided on the front side / entrance side or the rear side / rear side (one or both sides) of the ceiling. It is attached. Then, the heating cart 13 is housed in the compartment 26, and the cart-side connector F is connected to the power-supply-side connector E, so that 3.15 KW of power is supplied to the heater 22 of the tray 20 in the heating cart 13. When the heater 22 is energized and heated, the food and the like on the tray 20 are cooked. The heating cart 13 is roughly like this.

Hereinafter, the power supply connection structure of the present invention will be described with reference to FIG. As described above, this power supply connection structure relates to the power supply connection structure of the service heating cart 13 which can be stored in the compartment 26 of the galley 25 and includes the heater 22 as an electrical component. The cart-side connector F attached to the heating cart 13 and reaching the heater 22 can be connected to the power-supply-side connector E attached to the compartment 26 of the galley 25.

The power-supply-side connector E is provided with a first power supply set to supply electric power divided at a predetermined ratio.
A connector terminal group G and a second connector terminal group H;
An AC power supply circuit divided into systems is formed. Correspondingly, the cart-side connector F includes a corresponding first connector terminal group J connectable to the first connector terminal group G, each of which is set to supply the same predetermined ratio of power as described above;
A corresponding second connector terminal group K connectable to the second connector terminal group H is provided, and an AC power supply circuit divided into two systems is formed.

The power supply side connector E and the cart side connector F will be described in more detail below. First, a three-layer, four-wire AC power supply circuit is used as a power supply circuit in the aircraft, and a generator (not shown) using the drive of an aircraft engine is used as the power supply. The power supply side connector E first has a first connector terminal group G and a second connector terminal group H. First
The connector terminal group G includes connector terminals 1, 2, 3 (pins 1, 2, and 3) for a three-layer AC power supply of 115 V and 400 Hz, and a neutral connector terminal 4 for maintaining a balance therebetween. (4th pin).
Similarly, the second connector terminal group H is 115 V and 400 Hz.
Connector terminals 9, 10, and 11 (9th, 10th, and 11th pins) for a three-layer AC power supply and a neutral connector terminal 12 (12th pin for adjusting and maintaining the load balance generated between the three wires). Number pin).

As described above, the AC power supply circuit of the power supply side connector E includes the first connector terminal group G and the second connector terminal group H
, And the required power is divided and supplied at a predetermined ratio. In the illustrated example, for the power of 3.15 KW required for each heater 22 as the electrical component, the first connector terminal group G
Side can supply 2/3 of that power and the second
The connector terminal group H can supply 1/3 of the power. The first connector terminal group G and the second connector terminal group H, which are set so as to supply a predetermined ratio of electric power, are connected to the above-described power source generator through wires and the like. . 5 and 6 (5th and 6th pins) are power supply side connectors E
, A connector terminal for grounding. 7, 7 and 8 (7th and 8th pins) are connector terminals for the 28 V DC control circuit Y provided on the power supply side connector E. The power supply side connector E is configured as described above.

In correspondence with such a power supply side connector E,
The cart-side connector F first has a corresponding first connector terminal group J and a corresponding second connector terminal group K. Then, the corresponding first connector terminal group J is 115 V and 400 H
z, connector terminals 1 ', 2', 3 'for three-layer AC power supply
(1 'pin, 2' pin, 3 'pin) and a neutral connector terminal 4' for maintaining the balance therebetween.
(4'th pin). The corresponding second connector terminal group K also has connector terminals 9 ', 10', 11 '(pins 9', 10 ') for a three-layer AC power supply of 115 V and 400 Hz.
And a neutral connector terminal 1 for adjusting and maintaining the load balance generated between the three wires.
2 '(12th pin).

The AC power supply circuit of the cart side connector F also corresponds to the power supply side connector E described above, and is divided into two systems as described above. It is supposed to. In the illustrated example, for the required power of 3.15 KW,
The corresponding first connector terminal group J can supply 2/3 of the power, and the corresponding second connector terminal group K can
One third of the power can be supplied. Then, the corresponding first connector terminal group J and the corresponding second connector terminal group K, which are set so as to be able to supply a predetermined ratio of electric power,
Each is connected to the heater 22 of each tray 20 described above via wiring or the like. That is, the corresponding first connector terminal group J is connected to に 対 し of the total number of the trays 20 and the heaters 22, that is, to the number of trays 20 and the heaters 22 corresponding to a predetermined ratio of the power,
The corresponding second connector terminal group K is connected to one third of the total number of the trays 20 and the heaters 22, that is, to the number of trays 20 and the heaters 22 corresponding to a predetermined ratio of power. In the figure, 5 'and 6' (5 'and 6' pins) are connector terminals for grounding.
In the figure, 7 ′ and 8 ′ (7th and 8 ′ pins) are connector terminals for the DC control circuit Y, and the DC control circuit Y is provided with a door switch L. The cart side connector F is configured as described above.

Next, the connection relationship between the power supply side connector E and the cart side connector F will be described. First,
The first for the three-layer four-wire AC power supply circuit of the power supply side connector E
The corresponding first connector terminal group J for the three-layer, four-wire AC power supply circuit of the cart-side connector F can be connected to the connector terminal group G. That is, the connector terminals 1 ', 2', 3 ', 4' of the corresponding first connector terminal group J can be connected to the connector terminals 1, 2, 3, 4 of the first connector terminal group G, respectively. . At the same time, the power supply side connector E
Connector group H for three-layer four-wire AC power supply circuit
A corresponding second connector terminal group K for a three-layer four-wire AC power supply circuit of the cart-side connector F is connectable. That is, the connector terminals 9 of the second connector terminal group H,
The connector terminals 9 ', 10', 11 ', 12' of the corresponding second connector terminal group K can be connected to 10, 11, 12 respectively.

Further, the grounding connector terminals 5 and 6 of the power supply side connector E can be connected to the grounding connector terminals 5 'and 6' of the cart side connector F. or,
The connector terminals 7, 8 for the DC control circuit Y of the power supply side connector E can be connected to the connector terminals 7 ', 8' for the DC control circuit Y of the cart side connector F. Then, as expected, the cart-side connector F is connected to the power-side connector E, so that the corresponding first connector terminal group J is connected to the first connector terminal group G, and the second connector terminal group H is connected. When the second connector terminal group K is connected, the power corresponding to the power consumption of, for example, 3.15 KW is supplied to the heater 22 of each tray 20 of the heating cart 13 by the total of the two systems. Will be supplied. The connection relationship between the new type power supply side connector E and the cart side connector F according to the present invention is as described above.

Next, the new type power supply side connector E and the cart side connector F shown in FIG. 1 according to the present invention and the old type power supply side connector A and the cart shown in FIG. The connection relationship with the side connector B will be described. First, as shown in FIG. 2, the new type power supply side connector E and the old type cart side connector B can be connected as follows. That is, the first connector terminal group G for the three-layer four-wire AC power supply circuit of the new type power supply side connector E is connected to the corresponding connector for the three-layer four-wire AC power supply circuit of the old type cart side connector B. Terminal group D is connectable. In other words, the connector terminals 1, 2, 3, and 4 of the first connector terminal group G are added to the corresponding connector terminal group D.
Connector terminals 1 ', 2', 3 ', 4' can be connected.

On the other hand, at this time, the second connector terminal group H for the three-layer four-wire AC power supply circuit of the new type power supply side connector E is not connected to the old type cart side connector B. That is, the connector terminals 9, 10, 11, and 12 of the second connector terminal group H are connected to the new type power supply side connector E.
Even if the old-type cart-side connector B is connected to the cart, there is no connection target and the connection is cut off and the cart-side connector B is not connected. The grounding connector terminals 5 and 6 of the new type power supply side connector E are connected to the grounding connector terminals 5 of the old type cart side connector B.
'And 6'. Also, the connector terminal 7 for the DC control circuit Y of the new type power supply side connector E,
8 is also a DC control circuit Y of the old type cart side connector B.
Connector terminals 7 'and 8' for connection. The new type power supply side connector E and the old type cart side connector B can be connected as shown in FIG.

Next, as shown in FIG. 3, the old type power supply side connector A and the new type cart side connector F can be connected as follows. That is, the new type cart side connector F is added to the connector terminal group C for the three-layer four-wire AC power supply circuit of the old type power source side connector A.
The corresponding first connector terminal group J for the three-layer four-wire AC power supply circuit is connectable. That is, the connector terminals 1 ', 2', 3 ', 4' of the corresponding first connector terminal group J correspond to the connector terminals 1, 2, 3, 4 of the connector terminal group C, respectively.
Each can be connected.

On the other hand, the corresponding second connector terminal group K for the three-layer four-wire AC power supply circuit of the new type cart side connector F is not connected to the old type power supply side connector A. That is, the connector terminals 9 ′, 10 ′, 11 ′, and 12 ′ of the corresponding second connector terminal group K may be such that the new type cart side connector F is connected to the old type power supply side connector A. Are also disconnected because there is no connection object, and are not connected to the power supply side. In addition,
The ground connector terminals 5 and 6 of the old type power supply side connector A can be connected to the ground type connector terminals 5 ′ and 6 ′ of the new type cart side connector F. or,
The connector terminals 7 and 8 for the DC control circuit Y of the old type power supply side connector A can also be connected to the connector terminals 7 'and 8' for the DC control circuit Y of the new type cart side connector F. .

As described above, when the new-type cart-side connector F is connected to the old-type power-side connector A instead of the new-type power-side connector E, the following occurs. That is, it has only a connector terminal group C that forms one system of AC power supply circuit, and this connector terminal group C supplies the first connector terminal group G of the new type power supply side connector E, for example, 2. The new type cart side connector F is connected to the old type power supply side connector A set to supply only the same power as 1 KW of power, and thus the first connector terminal group J corresponding to the connector terminal group C. Is connected as follows. In this case, the heater 22 of the heating cart 13 is set so that only a predetermined ratio of power, for example, 2.1 KW, which is smaller than the power consumption of 3.15 KW, is supplied. The old type power supply side connector A and the new type cart side connector F can be connected as shown in FIG.

The present invention is configured as described above. Then, it becomes as follows. In the power supply connection structure of the heating cart 13 of the new type according to the present invention, the AC power supply circuit for the power supply side connector E on the compartment 26 side of the galley 25 and the cart side connector F on the heating cart 13 side is divided into two systems. For example, power of 3.15 KW is divided and supplied at a predetermined ratio.

Therefore, as shown in FIG. 1, when the heating cart 13 also having the new type power supply connection structure is stored in the compartment 26 having the new type power supply connection structure, become that way.
In this case, the corresponding first connector terminal group J of the new type cart side connector F is connected to the first connector terminal group G of the new type power supply side connector E, and
Second connector terminal group H of new type power supply side connector E
Then, the corresponding second connector terminal group K of the new type cart side connector F is connected. Therefore, the two types of AC power supply circuits connected and formed in this manner are used to reduce the power consumption of the heating cart 13 having a new type of power supply connection structure, for example, to the electric components such as the heaters 22 having a power consumption of 3.15 KW. The power corresponding to the power is supplied as a total.

Next, regardless of this, as shown in FIG. 2, the compartment 2 of this new type power supply connection structure
The case where the heating cart 13 of the old type power supply connection structure is stored in the case of 6 is as follows. In this case, the first connector terminal group G of the new type power supply side connector E is added to the corresponding connector terminal group D of the old type cart side connector B (the corresponding first connector terminal group J of the new type cart side connector F). The corresponding connector terminal group D) set to supply the same electric power as the 2.1 KW electric power is connected, and the second connector terminal group H of the new type power supply side connector E is replaced with the old type cart side connector B. Has no connection target and is not connected. Therefore, the one-system AC power supply circuit connected and formed in this way consumes electric power of the heating cart 13 of the old type power supply connection structure for electric components such as the heaters 22 of, for example, 2.1 KW. The power corresponding to the power is supplied.

Then, as shown in FIG. 3, the case where the heating cart 13 of the new type power supply connection structure is stored in the compartment 26 of the old type power supply connection structure is as follows. In this case, the connector terminal group C of the old type power supply side connector A (the first terminal group G of the new type power supply side connector E is supplied.
The first terminal group J corresponding to the new type of cart side connector F is connected to the connector terminal group C) set to supply the same power as the 1 KW power, and The two connector terminal group K is not connected to the old type power supply side connector A because there is no connection target. Therefore, the power consumption of the heating cart 13 of the new type power supply connection structure is smaller than that of the electric components such as the heater 22 of 3.15 KW, for example, by the single system AC power supply circuit thus connected and formed. 2.1KW
Power is only partially supplied. That is, no electric power is supplied to all the trays 20 and the heaters 22, and the power is not supplied to the corresponding first connector terminal group J.
Electric power is supplied only to the の tray 20 and the heater 22.

As shown in FIG. 4, when the heating cart 13 having the old power supply connection structure is stored in the compartment 26 having the old power supply connection structure, the conventional example of this type is described above. The outline is as follows. In this case, the corresponding connector terminal group D of the old cart side connector B is connected to the connector terminal group C of the old type power supply side connector A. Therefore, the power supply of the heating cart 13 having the old power supply connection structure can be reduced by the one system of the AC power supply circuit thus connected to the electric components such as the heater 22 having a power consumption of, for example, 2.1 KW. Is supplied. By the way, according to the power supply connection structure of the heating cart 13, the following first and second cases are obtained.

First, in this power supply connection structure, first, as shown in FIG. 1 and described above, the new type power supply side connector E and the cart side connector F according to the present invention are connected as intended. In this case, the power consumption corresponding to the power consumption of the new type of heating cart 13 is reliably supplied to electric components such as the heater 22 having a power consumption of 3.15 KW, for example. Further, as shown in FIG. 2 and described above, a new type power supply side connector E according to the present invention includes:
Even when the old type cart side connector B according to this type of conventional example is connected, the power consumption of the old type heating cart 13 is equal to the power consumption of electric components such as the heater 22 of, for example, 2.1 KW. Power is reliably supplied.

Then, as shown in FIG. 3 and described above, the old type power supply side connector A according to the prior art of this type is used.
In the case where the new type of cart side connector F according to the present invention is connected, the power consumption of the new type of heating cart 13 is smaller for electric components such as the heater 22 of 3.15 KW, for example. .1 KW of electric power is supplied. In this case, the corresponding first connector terminal group J of the new type cart side connector F is connected to the connector terminal group C of the old type power supply side connector A, and connected to the corresponding first connector terminal group J. 2/3 heater 22
Power is supplied and energization heating is performed only for the case.
The corresponding connector terminal group K of the new type cart side connector F is not connected to the old type power supply side connector A, but is connected to the corresponding second connector terminal group K.
No electric power is supplied to the heater 22, and the energization heating is not performed. Therefore, the old type, for example, capacity 2.
A situation in which power exceeding the capacity is supplied from the power supply side of 1 KW via wiring or the like is reliably avoided.

Secondly, in the power supply connection structure of the new type according to the present invention, the power supply side connector E has two systems of the first system.
In addition to the connector terminal group G and the second connector terminal group H, the cart-side connector F is provided with two systems of the corresponding first connector terminal group J and the corresponding second connector terminal group K, It has a simple configuration. That is, this power supply connection structure is different from the conventional power supply connection structure only in that the second connector terminal group H and the corresponding second connector terminal group K are added and the connection relation of the related wiring is changed or modified. Of a relatively simple configuration.

[0042]

As described above, the power supply connection structure of the heating cart according to the present invention has a two-system AC power supply circuit for a new type of power supply side connector for 3.15 kW, for example, and a cart side connector. The following effects are exhibited by forming the power supply in a divided manner and by supplying a large amount of power in a predetermined ratio.

First, for example, a new type of power supply connection structure for 3.15 KW, for example, can be used for connection between two.
Connection with an old type power supply connection structure for 1 kW can be performed without any problem in safety. In other words, in the power supply connection structure of the heating cart for the new type, first, as expected, the power supply side connector of the new type, for example, for 3.15 kW, and the cart side connector are connected. The power consumption of the Ting cart is, for example, 3.1
When electric power is supplied to electric components such as a 5 kW heater, there is no problem. Next, an old type, for example, a 2.1 KW cart side connector is connected to the new type, for example, a power supply side connector for 3.15 KW, and
The power consumption of the old type heating cart is, for example, 2.
Even when electric power is supplied to electric components such as a 1 kW heater, no problem occurs. In other words, the power supply only supplies 2.1 kW of power less than the 3.15 kW capacity, and there is no particular problem.

When a new type, for example, a 3.15 KW cart side connector is connected to an old type, for example, 2.1 KW power supply side connector, the power consumption of the heating cart is, for example, 3.15 KW. Electric components such as heaters are supplied with the divided electric power of, for example, 2.1 KW. In this way, this power supply connection structure is a safety circuit design, and the heating power cart of the new type power supply connection structure is erroneously stored in the compartment side and the power supply side of the galley of the old type power supply connection structure However, even if the power supply is connected, there is no possibility that power is supplied from the power supply beyond its capacity. That is, as in the above-described conventional example, 2.1.
An electric power of 3.15 KW exceeding the capacity for KW is supplied by the power supply and its wiring, so that a situation in which these are heated and overheated is surely avoided.
Thus, according to this power supply connection structure, a large amount of power can be supplied, and even if there is a human error, there is no danger of fire, and for example, the safety of an aircraft is greatly improved.

Second, and yet this is easily and easily realized. That is, in the power supply connection structure of this new type of heating cart, the power supply side connector has two systems of the first connector terminal group and the second connector terminal group, and the cart side connector has two systems. It has a simple configuration in which the corresponding first connector terminal group and the corresponding second connector terminal group are provided, and the modification of related equipment is slight, so that the first point described above is easily realized. In this way, the problem in this type of conventional example is solved,
The effects exhibited by the present invention are remarkably large.

[Brief description of the drawings]

FIG. 1 is a circuit diagram for describing an embodiment of the invention regarding a power supply connection structure of a heating cart according to the present invention, and shows a case where connection is performed as expected.

FIG. 2 is a circuit diagram for explaining an embodiment of the present invention, showing an example in which different connections are made;

FIG. 3 is a circuit diagram for explaining the embodiment of the present invention, showing another example in which different connections are made.

FIG. 4 is a circuit diagram of a conventional power supply connection structure of this kind.

FIG. 5 is a perspective view of a heating cart.

FIG. 6 is a plan view of a tray.

[Explanation of symbols]

 13 Heating Cart 22 Heater (Electrical Equipment) 25 Galley 26 Compartment A Separate Power-Side Connector (Old Type, Conventional Example) C Connector Terminal Group E Power-Side Connector (New Type, The Present Invention) F Cart-Side Connector (New type of the present invention) G First connector terminal group H Second connector terminal group J First connector terminal group corresponding K Second connector terminal group corresponding K

Claims (1)

[Claims] 1. A power supply connection structure for a service heating cart which is housed in a galley compartment and has electrical components, wherein the power supply connector is provided on the galley compartment side. A cart-side connector attached to the heating cart and leading to the electrical component is connectable, and the power-supply-side connector is a first connector terminal set to supply power divided at a predetermined ratio. And a second connector terminal group, and an AC power supply circuit divided into two systems is formed. Correspondingly, the cart side connectors respectively supply the same predetermined ratio of power as described above. The first set
A corresponding first connector terminal group connectable to the connector terminal group and a corresponding second connector terminal group connectable to the second connector terminal group are provided, and an AC power supply circuit divided into two systems is formed. As expected, the cart side connector is connected to the power supply side connector, so that the corresponding first connector terminal group is connected to the first connector terminal group, and the second connector terminal group is connected to the second connector terminal group.
When the corresponding second connector terminal group is connected to the connector terminal group, the electric power of the heating cart is supplied to the electrical components of the heating cart by the total of the two systems. On the other hand, when the cart side connector is connected to another power supply side connector instead of the above power supply side connector, that is, only the connector terminal group forming one AC power supply circuit is provided. In addition, the cart-side connector is different from the other power-side connector in which the connector terminal group is set to supply only the same power as the power supplied by the first connector terminal group of the power-side connector. If the corresponding first connector terminal group is connected to the connector terminal group, the power consumption of the electrical components of the heating cart is less than that of the heating cart. That only a predetermined percentage of the power is set to be supplied, characterized by, heating cart power connection structure.