JPH09224306A - Power feeding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To pull/push the plug of a meal supply wagon into/out of a plug-socket with a small force by a method wherein the plug having pin terminals and the plug-socket which has contact springs which are brought into contacts with the tips of the pin terminals, which attracts the plug magnetically and which are installed in a building surface. SOLUTION: A power feeding device consists of a plug 2 and a plug-socket 4 which are coupled/decoupled magnetically with each other. The plug 2 is attached to the tip of a feeding wire drawn out of a meal supply wagon and terminated by pin terminals 1. The plug-socket 4 has contact springs 3 which are brought into contacts with the tips of the pin terminals 4. The plug-socket 4 attracts the plug 2 magnetically and is installed in a building surface (e). With this constitution, it is not necessary to ensure a large contact pressure when the pin terminals 1 and the contact springs 3 are brought into contacts with each other and the plug 2 can be pulled/pushed out of/into the plug socket 4 with a small force.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power feeding device that charges a storage battery to allow a catering caterer to run by itself.

[0002]

2. Description of the Related Art Conventionally, in a high capacity cord connector set, a plug and an outlet are connected to each other by press-fitting a plug blade projecting from a plug into a pair of blade receivers provided in the outlet. It has become.

[0003]

However, in the conventional example as described above, there is a problem that a large force is required for inserting and removing the plug in order to obtain the contact pressure between the blade and the blade receiver. . The present invention is intended to solve the above-mentioned problems, and it is not necessary to secure a large contact pressure, and the plug can be inserted into and removed from an outlet with a small force, while the storage battery is charged to provide a food and drink delivery car. It is intended to provide a power supply device capable of self-propelled.

[0004]

In order to achieve the above-mentioned object, in the invention of claim 1, the food and beverage serving vehicle a, which is self-propelled while keeping the heat insulation box and the cold insulation box provided inside at appropriate temperatures, is self-propelled. And a plug 2 provided with the pin terminal 1 provided on the catering service a and a contact spring 3 that comes into contact with the tip of the pin terminal 1, and an outlet that is magnetically attached to the plug 2 and is installed on the construction surface e. It is characterized in that the plug terminal 2 and the contact spring 3 are brought into contact with each other without requiring a large contact pressure, so that the plug 2 can be inserted into and removed from the outlet 4 with a small force. It is possible to charge the food service cater a while running and to make it self-propelled.
Further, even if the food service car a is moved by an external force while power is being supplied to the food service car a, the plug 2 and the outlet 4 are simply connected and held to each other by magnetic attraction, which is easy. It is a thing that comes off, and a catering service a
The plug 2 and the outlet 4 can be disconnected without applying an unreasonable force to the power feeding line 31.

According to a second aspect of the present invention, in the first aspect, the outlet 4 is equipped with a mounting means A for mounting it in the embedding hole 51 of the construction surface e. Thus, the outlet 4 can be installed in the embedding hole 51 of the construction surface e. According to a third aspect of the invention, the outlet 4 according to the first aspect is provided with an openable / closable door 5 that shuts off from the outside, and can prevent dust and the like from entering the inside of the outlet 4. it can.

The invention of claim 4 is characterized in that in claim 3 the door 5 is provided with an inclined portion 6 which is opened when the pin terminal 1a for the ground electrode provided on the plug 2 hits first. The door can be automatically opened when the plug 2 and the outlet 4 are connected. In the invention of claim 5,
In Claim 1, the construction surface e is a wall surface, and the plug 2 and the outlet 4 are provided along the wall surface with the food service car a stopped so as not to be an obstacle in the room. Can be connected to charge the catering caterer.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION A power feeding device according to the present invention charges a food service car a that is self-propelled by an electric motor while keeping the heat storage and the cold storage provided inside at appropriate temperatures. The main body is composed of a high-capacity type connector used for. As shown in FIGS. 1 and 2, the high-capacity type connector used in the present invention is mainly composed of a plug 2 and an outlet 4 which can be detachably connected to each other by magnetic attachment.

The plug 2 is provided on the side of the catering service a, and the outlet 4 is provided on a construction surface e such as a wall surface, a ceiling or a floor surface. In the illustrated one, the outlet 4 is provided on the wall surface as the construction surface e, but when the installation space of the installation place is restricted, the construction surface e is used as the ceiling surface as well as the ceiling surface. It may also be installed on the floor. Further, when the outlet 4 is installed on the wall surface as the construction surface e, it is desirable that the installation height position of the outlet 4 is substantially the same as the height dimension of the catering service car a so as to avoid the bottom portion of the wall surface. In such a case, when the plug 2 and the outlet 4 are connected at the time of power feeding, the user can comfortably connect the plug 2 and the outlet 4 in a standing posture without bending or stretching the user. It is possible to connect them to be in a power supply possible state.

As shown in FIGS. 7 and 8, the plug 2 has a receiving box-shaped main body case 7 having a storage portion 10 inside and a magnet storage portion 11 adjacent to the storage portion 10 and having an open top surface. And a lid plate 13 that is attached to the upper opening of the main body case 7 with the mounting screws 12, and the housing portion 1 of the main body case 7.
The main body is composed of a plurality (four) of pin terminals 1 housed and housed in 0 and a magnet 9 housed and housed in the magnet housing unit 11.

A plurality of (four) through-holes 14 are formed in the cover plate 13, and a plurality of (4) accommodated and arranged in the accommodating portion 10.
The first pin terminal 1 is inserted into the through hole 14 so as to be housed in the housing part 10. 1a is a pin terminal for the ground electrode, and another pin terminal 1a
The length dimension is longer than that. Reference numeral 30 is an insertion hole through which the tip of the magnet 9 is inserted.

A protective case 8 formed of an insulating material such as soft rubber is attached to the outside of the main body case 7. As shown in FIG. 9, a plurality of elastic pieces 8a are provided in the rear portion of the protection case 8 formed in a substantially cylindrical shape, and the elastic pieces 8a are pressed against the outer peripheral surface of the power supply line 31 while being elastically deformed. It is supposed to be done. In this way, the elastic piece 8a is pressed against the outer peripheral surface of the power supply line 31 while being elastically deformed, so that water can be prevented from entering the protective case 8 along the outer surface of the power supply line 31 and at the same time. Even when the diameter of 31 is reduced or increased, a gap is not formed between the power supply line 31 and the protective case 8. Here, in the illustrated case, the main body case 7 is formed of a substantially cylindrical round case 7a, and the lid plate 13 attached to the upper opening of the main body case 7 has a disc shape. .

The magnet housing 11 for housing the magnet 9 is arranged outside the housing 10 for housing the pin terminal 1. The magnet housing 11 is arranged at both ends of the round case 7a so as to be located outside the terminal pin 1. The magnet 9 is arranged, and by arranging the magnet 9 in this way, the plug 2 and the outlet 4 are securely magnetized even if the contact of the contact spring 3 varies with the contact of the contact spring 3. Is able to.

The above-mentioned plug 2 is attached to the front end of the power supply line 31 led out from the catering car a. here,
It is desirable that the plug 2 is installed on the catering car a so that it does not project to the outer surface of the catering car a during normal operation, and that it can be pulled out to the outside of the catering car a together with the power supply line 31 at the time of power feeding. With this configuration, the plug 2 and the power supply line 31 do not become an obstacle when the catering service car a moves.

As shown in FIGS. 3 to 6, the outlet 4 is mainly composed of a main body case 15, an inner lid 16 and an outer lid 17, and the outer lid 17 and the main body case 15 are mutually connected by a mounting screw 18. The inner lid 16 is attached to the main body case 15 by the attachment screw 23. A plurality (four) of contact springs 3 are arranged to be housed between the inner lid 16 and the main body case 15, and a door member 19 is housed between the inner lid 16 and the outer lid 17. It is supposed to be arranged. The contact spring 3 is biased outward (upward) between the inner lid 16 and the main body case 15, and has a contact 3a on the upper surface. The contact 3a has a pin terminal 1 of the plug 2. The tips of the are in contact. That is, when the plug 2 is connected to the outlet 4, the tip of the pin terminal 1 abuts in the direction of compressing the contact spring 3, and the tip of the pin terminal 1 contacts the contact spring 3 as shown in FIG. It comes in contact with 3a. A terminal plate 26 is attached to the bottom of each contact spring 3,
At the end of each terminal plate 26, the wire holding plate 27 and the terminal screw 2
8 can be attached. This each terminal board 26
Is a positioning groove 15a recessed in the upper surface of the main body case 15.
Is fitted to the main body case 15 and positioned on the upper surface of the main body case 15.

A plurality of (four) through holes 2 are formed on the upper surface of the outer lid 17.
0 is bored, and the pin terminal 1 of the plug 2 is inserted and arranged in the through hole 20. Recesses 21 are provided at both ends of the outer lid 17 so as to sandwich the through hole 20, and a magnetic body 22 made of a metal plate is attached to the recesses 21. The magnetic body 22 is mounted by screwing a mounting screw 23 inserted from the outer surface into a screw hole 16a of the inner lid 16.

A through hole 2 provided in the outer lid 17 is provided at an outer end portion of a door member 19 housed and arranged between the inner lid 16 and the outer lid 17.
The door 5 is formed on the lower side of 0 and the upper side of the through hole 25 provided in the inner lid 16, and is arranged to close the through holes 20 and 25. A spring member 24 such as a coil spring is housed inside the door member 19. The spring member 24 allows the door member 19 to pass through the through holes 20 provided in the outer lid 17 and the inner lid 16. , 25 are always urged to be in a position to close. An inclined portion 6 is provided on the door 5, and the inclined terminal 6 has a pin terminal 1 for a ground electrode.
When the tip of a is pressed in contact, the pressing force of the pin terminal 1a for the ground electrode is converted into a force for moving the door member 19 to the side, and the door member 20 resists the spring force of the spring member 24. Then, it moves to the side and opens each through hole 20, 25. That is, the through hole 20 of the outer lid 17 and the through hole 25 of the inner lid 16 are communicated with each other by the lateral movement of the door member 20.

At both ends of the upper portion of the outer lid 17, mounting frames 52 are mounted as mounting means A used when the outlet 4 is installed in the embedding hole 51 of the construction surface e. The attachment frame 52 is attached to both upper ends of the outer lid 17 by attaching screws or the like, and has attachment pieces 53 at both ends. A through hole 54 is formed in each of the mounting pieces 53, and a mounting screw 55 is driven through the through hole 54 into the opening edge of the embedding hole 51 of the construction surface e, as shown in FIG. Embedded hole 5
It is designed to be installed so as to be embedded in 1. A cover 50 is attached to the wall surface so as to cover the outlet 4 in a state where the outlet 4 is installed in the embedding hole 51. The cover 50 has a through hole 50a in the central portion fitted to the cylindrical protrusion 17a of the outlet 4. It is attached to the wall surface so as to cover the outlet 4 in such a manner that they are fitted together.

Here, when the outlet 4 is embedded and mounted in the embedding hole 51, the preceding wiring can be used, and by using the preceding wiring, the indoor piping cannot be seen. Then, the plug 2 and the outlet 4 are connected to charge the storage battery installed in the catering service car a, and this storage battery is used as a power source to electrically operate the catering service while keeping the heat insulation box and the cold storage box provided inside at appropriate temperatures. The vehicle a can be driven.

When connecting the plug 2 provided on the side of the catering service a to the outlet 4 provided on the construction surface e to charge the catering service a, when connecting the plug 2 to the outlet 4. , The plug 2 and the outlet 4 are opposed to each other as shown in FIG.
The plug 2 and the outlet 4 are connected to each other by magnetically attaching the magnet 9 provided in the plug 2 to the magnetic body 22 provided in the outlet 4 so that the plug 9 is inserted into the through hole 20 of the outlet 4. Thus, power can be supplied to the food and beverage service car a. Here, when inserting the pin terminal 1 of the plug 2 into the through hole 20 of the outlet 4, since the pin terminal 1a for the ground electrode is longer in length than the other pin terminals 1, As shown in FIG. 10, first, the pin terminal 1a for the ground electrode is inserted into the through hole 20.
The tip of the pin terminal 1a for the ground electrode inserted inside moves the door member 19 laterally via the inclined portion 6 to open the door 5 that closes each through hole 20, and further, After the pin terminal 1a for the ground electrode comes into contact with the contact spring 3 before the other pin terminals 1, the remaining pin terminals 1 come into contact with the contact spring 3 as shown in FIG.
Is magnetically attached to the magnetic body 22 so that the plug 2 and the outlet 4 are connected to each other. In addition, in the case where the invasion of dust and the like is prevented by providing the door 5 which is opened only at the time of connection, when the plug 2 and the outlet 4 are connected, the door 5 can be automatically opened and an electric shock can be given. The effect of prevention can be enhanced.
Further, when the pin terminal 1 and the contact spring 3 are brought into contact with each other, it is not necessary to secure a large contact pressure, and the outlet 4
The plug 2 can be inserted and removed with respect to each other with a small force.

Further, even when the catering car a is moved by an external force while the catering car a is being supplied with electricity, the plug 2 and the outlet 4 are only detachably connected and held by magnetic attachment. Therefore, the food delivery car a and the power feeding line 31 can be easily detached, and the plug 2 and the outlet 4 can be detached without applying an unreasonable force to the food delivery car a and the food delivery car a moves. Even feeder line 3
1 and the catering service a are less likely to be damaged.

[0021]

According to the first aspect of the present invention, there is provided a food service caterpillar which is self-propelled by an electric motor while keeping the heat storage box and the cold storage box provided inside at appropriate temperatures, and a pin terminal provided on the food service dish car. It has a plug provided and a contact spring that comes into contact with the tip of the pin terminal, and is composed of an outlet that is magnetically attached to the plug and is installed on the construction surface. It is not necessary to secure contact pressure, and it is possible to charge and serve the catering caterer while driving the plug to and from the outlet with a small force. Even if the catering caterpillar is moved by external force while the catering caterer is being supplied with power, the plug and the outlet can be easily detached because they are only connected and held by magnetic attraction. The plug and the outlet can be removed without applying an unreasonable force to the catering caterer or the feeder line, and it is possible to prevent damage to the feeder catering caterer or the catering line.

According to a second aspect of the present invention, in the first aspect, the outlet is provided with a mounting means for installing it in the embedded hole in the construction surface. Therefore, in addition to the effect of the first aspect, the outlet is constructed by the mounting means. It can be installed in the embedded hole in the surface. The invention of claim 3 is
In the first aspect, since the outlet is provided with a door that can be opened and closed so as to be shielded from the outside, in addition to the effect of the first aspect, it is possible to prevent dust and the like from entering the inside of the outlet.

According to the invention of claim 4, in addition to the effect of claim 3, in addition to the effect of claim 3, the plug and the outlet are provided because the pin terminal for the ground electrode provided in the plug first contacts and opens the door. The one that can automatically open the door when connecting. According to the invention of claim 5, since the construction surface is a wall surface in claim 1, in addition to the effect of claim 1, a state in which the catering service car is stopped along the wall surface so as not to be an obstacle in the room It is possible to charge the catering caterer by connecting the plug and outlet with.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of the present invention.

FIG. 2 is an enlarged perspective view of a portion A in FIG.

FIG. 3 is an exploded perspective view of an outlet.

FIG. 4 shows an outlet, (a) is a plan view and (b) is a bottom view.

FIG. 5 is a plan view of the outlet showing the internal configuration.

FIG. 6 shows an outlet, (a) of FIG.
FIG. 4A is a cross-sectional view taken along the line Roll in the state where the mounting frame is omitted in FIG. 4A, and FIG. 4B is a cross-sectional view taken along the line Har in the state where the mounting frame is omitted in FIG.

FIG. 7 is an exploded perspective view of a plug.

FIG. 8 shows a plug, (a) is a front view,
(B) is a sectional view taken along the line Ni of (a), and (c) is a sectional view taken along the line Ho of (a).

FIG. 9 is an explanatory diagram illustrating a state before connection.

FIG. 10 is an explanatory diagram illustrating an operating state of a door.

FIG. 11 is an explanatory diagram illustrating a connection state.

[Explanation of symbols]

 1 Pin Terminal 1a Pin Terminal for Grounding Electrode 2 Plug 3 Contact Spring 4 Outlet 5 Door 6 Sloping Part 51 Embedded Hole a Food Catering Serving e Construction Surface A Mounting Means

Claims (5)

[Claims] Claims: 1. A food and beverage service car that keeps the heat and cold storage chambers provided inside at appropriate temperatures and is self-propelled by electric power, a plug provided with a pin terminal provided in the food and beverage service car, and a pin terminal. A power supply device, comprising a contact spring that comes into contact with the tip of the plug, and a plug that is magnetically attached to the plug and that is installed on the construction surface. 2. The power feeding device according to claim 1, wherein the outlet is provided with a mounting means for mounting in the embedded hole in the construction surface. 3. The power supply device according to claim 1, wherein the outlet is provided with an openable / closable door that shuts off from the outside. 4. The power feeding device according to claim 3, wherein the pin terminal for the grounding electrode provided on the plug is a door having an inclined portion which is first contacted and opened. 5. The power feeding device according to claim 1, wherein the construction surface is a wall surface.