JP3219280U - Cooling unit and cooler trailer - Google Patents

Abstract

To provide an in-vehicle cooler unit and a cooler trailer capable of transporting and selling frozen and refrigerated products for a long time without impairing the original convenience and practicality of a combination of an electric minicar and an accompanying vehicle. . An accompanying vehicle is towed by a single-seater electric vehicle of electric minicar specification that is a towing vehicle. The accompanying vehicle 20 is a cold trailer, and includes a carriage 21 that is detachably coupled to the single-seater electric vehicle 10 via a coupling device 25. The trolley 21 is equipped with a cold insulation unit 30, and the cold insulation unit 30 is placed under the frame 22 in order to forcibly cool the cold insulation box 31 mounted on the frame 22 of the carriage 21 and the inside of the cold insulation box 31. A refrigerator 32 having a built-in electric motor and a battery supported under the frame 22 together with the refrigerator 32 to drive the electric motor are provided. [Selection] Figure 1

Description

  The present invention relates to an in-vehicle cooler unit mounted on a carrier bed of a freight vehicle and a cooler trailer to be pulled by a self-propelled vehicle. In particular, the present invention relates to an ultra-compact in-vehicle cooler unit and cooler combined with an ultra-small vehicle called an electric commuter. Regarding trailers.

  Ultra-compact cars called electric commuters are attracting attention all over the world, and their standardization is under consideration in Japan. The smallest self-propelled vehicle currently in Japan is a first-class motorized bicycle defined by the Road Transport Vehicle Law. As is well known, this vehicle, which is called a moped, is a self-propelled vehicle that uses an internal combustion engine with a displacement of 50 cc or less, or an electric motor with a rated output of 0.6 kW or less as a prime mover, and has excellent economic efficiency including taxation. In terms of legislation, since it includes three or more minicars, it is promising as an ultra-compact car called an electric commuter, and it can be used as an ultra-compact freight car that can carry cargo.

  If a bicycle with a first-class motor under the Road Transport Vehicle Law is viewed as a commercial freight vehicle, a minicar with three or more wheels is promising. This is because a minicar having three or more wheels according to the Road Transport Vehicle Law can use an electric motor with a rated output of 0.6 kW or less as a prime mover, so that a sufficient maximum output can be secured as a commercial freight vehicle. As for the dimensions, the total length is 2500 mm or less, the horizontal width is 1300 mm or less, and the height is 2000 mm or less, which is sufficient for an ultra-compact freight car.

  On the other hand, this electric minicar requires an ordinary license for driving under the Road Traffic Law, but in exchange, the maximum speed of the vehicle is increased to 60 km / h, which is advantageous. However, this electric minicar is limited to a maximum cargo load of 30 kg under the Road Traffic Law. This is a major obstacle for commercial freight vehicles.

  In order to remove this obstacle on the load capacity, the present applicant planned to pull the trailer with an electric minicar. A trailer towed by an electric minicar is called an accompanying vehicle in the Road Transport Vehicle Law. Then, a part of the rear wheel of the minicar as a towing vehicle is protruded rearward from the vehicle body, and a recess into which the protrusion is inserted is formed on the front surface of the accompanying vehicle, and the centerline is sandwiched between the electric minicar 2 Japanese Patent Application Laid-Open No. 2004-133867 proposes a fitting type double hitch connecting structure that connects at locations.

  According to this connection structure, first, since the accompanying vehicle bears much of the load, the load applied to the electric minicar can be greatly reduced. That is, even if a heavy cargo greatly exceeding 30 kg is loaded on an accompanying vehicle, the load applied to the electric minicar as a towing vehicle can be limited to 30 kg or less. Secondly, the wheel base of the electric minicar that is a towing vehicle is relatively larger than the vehicle length. For this reason, even if the vehicle length of the electric minicar is reduced, traveling stability is ensured. Third, the increase in the total length including the accompanying vehicles is suppressed as much as possible. Fourth, even when a traction device (hitch member) that is a combination of a general hitch ball and hitch coupler is used as the connecting device, the jackknife phenomenon at the time of retraction, which is a problem with the traction device, is prevented.

  Such a combination of an electric minicar and an accompanying vehicle has high convenience and practicality and can be used for transporting various things. One of the uses is transport of frozen products and refrigerated products. In this case, the accompanying car will be equipped with a cool box with heat insulation, but the latest cool box is not suitable for long-time cold storage even though it has high heat insulation, and the lid is opened frequently. Even when closed, an increase in temperature inside the box cannot be avoided. As a result, ice confectionery (shaved ice), frozen confectionery (ice cream), etc. cannot be used for street sales or sales at event venues. The combination of the electric minicar and the accompanying car is small and easy to obtain parking permission. Originally, it is suitable for selling goods on the streets and event venues, but it can also be used for selling items such as ice confectionery, frozen confectionery, etc. Is currently difficult.

Utility Model Registration No. 3197884

  The present invention was devised in view of the current situation, and transported and sold frozen and refrigerated products for a long time without impairing the original convenience and practicality of the combination of electric minicars and accompanying vehicles. It is an object of the present invention to provide an in-vehicle cold-reserving unit and a cold-retaining trailer.

  In order to achieve the above object, an in-vehicle cooling unit according to the present invention is an in-vehicle cooling unit that is attached to a loading platform of a self-propelled vehicle, and has a heat insulating property and an upper surface that is an open / close lid. A refrigerator with a built-in drive motor that is attached to the lower surface of the cold box to forcibly cool the inside of the cold box, and a lower surface of the cold box together with the refrigerator to drive the drive motor in the refrigerator. Battery.

  In addition, a cold-insulated trailer according to the present invention is a cold-insulated trailer to be pulled by a self-propelled vehicle including a prime mover and a steering device, and is connected to the self-propelled vehicle through a connecting device in a detachable manner, In order to drive a cold box with an open / close lid mounted on the refrigerator, a refrigerator with a built-in drive motor attached to the lower surface of the cart to forcibly cool the inside of the cold box, and a drive motor in the refrigerator And a battery attached to the lower surface side of the carriage together with the refrigerator.

  In the in-vehicle cooler unit and cooler trailer of the present invention, the self-propelled vehicle is typically an electric minicar in a first-class motorized bicycle defined by the Road Transport Vehicle Law. In that case, the cold trailer of the present invention is an accompanying vehicle of the electric minicar.

  The in-vehicle cooler unit of the present invention combines a cooler box with a battery-powered refrigerator, so that the interior of the cooler box can be extended without relying on an external power source even when the self-propelled vehicle is an electric minicar. Since the temperature can be maintained at an appropriate low temperature for a long time, the range of use of the electric minicar can be significantly expanded.

  In addition, the cooler trailer of the present invention is equipped with a refrigerator driven by a battery along with a cooler box, so that the interior of the cooler box depends on an external power source even when the towing self-propelled vehicle is an electric minicar. Since it can be maintained at an appropriate low temperature for a long period of time without being carried out, the range of use of the electric minicar can be significantly expanded.

  In addition, in any of the in-vehicle cooling unit and the cooling trailer according to the present invention, when a general-purpose power source of 12V is provided on the electric minicar side, this general-purpose power source can be used as the power source voltage of the refrigerator. Remarkably improved.

BRIEF DESCRIPTION OF THE DRAWINGS It is a side view of the cool trailer which shows one Embodiment of this invention, and shows the state connected with the electric minicar which is a self-propelled vehicle. It is a top view of the same cool trailer. It is a side view of the cold-retaining trailer.

  Embodiments of the present invention will be described below.

  The cool trailer of the present embodiment is a bicycle with a first-class motor specified by the Road Transport Vehicle Law, and in particular, an electric minicar-specific self-propelled vehicle using a motor with a rated output of 0.6 kW or less as a motor. It is a towed vehicle to be towed.

  As shown in FIG. 1, a self-propelled vehicle of an electric minicar specification that is a towing vehicle is a two-shaft four-wheeled single-seat electric vehicle 10 that uses a battery as a power source. This single-seater electric vehicle 10 is a freight vehicle provided with a loading platform 11 at the rear, and is configured such that an accompanying vehicle 20 can be connected from the loading platform 11 to the rear thereof in order to increase the loading capacity. And the accompanying vehicle 20 is made into the cold-reserving trailer of this embodiment here.

  As shown in FIGS. 2 and 3, the cold insulation trailer that is the accompanying vehicle 20 includes a one-shaft two-wheel carriage 21 that is connected to the single-seater electric vehicle 10 that is a towing vehicle, and a cold insulation unit 30 that is mounted on the carriage 21. And. The carriage 21 has a structure in which a rectangular planar frame body 22 is supported by wheels 23, 23 on both sides from the lower side, and vertical members 24, 24 on both sides of the frame body 22 are extended forward to the tip portion thereof. The paired connecting devices 25 and 25 on both sides are connected to the single-seater electric vehicle 10.

  The connecting devices 25 and 25 on both sides are well-known traction devices (hitch members) composed of a combination of a hitch ball and a hitch coupler, and the accompanying vehicle 20 as a towed vehicle is connected to the single-seater electric vehicle 10 as a towing vehicle. Can be easily combined and disconnected.

  The wheels 23, 23 on both sides supporting the carriage 21 are auxiliary wheels located on the rear side of the rear wheels 12, 12 on both sides of the single-seater electric vehicle 10, and the swing arms 26 on both sides attached to the frame body 22, As in the case of No. 26, the carriage 21 is elastically supported so as to be movable in the vertical direction by the combination of the spring and damper units 27 and 27 on both sides. Reference numeral 28 denotes a rotary support stand attached to the front portion of the carriage 21. When the accompanying vehicle 20 is connected to the single-seater electric vehicle 10, it is accommodated in the carriage 21, and the accompanying vehicle 20 is not connected. In the state, it is pulled out from the carriage 21 to support the associated vehicle 20.

  The cold insulation unit 30 mounted on the carriage 21 includes a cold insulation box 31 fixed on the frame body 22 of the carriage 21, an electric refrigerator 32 attached below the frame body 22, and driving of the refrigerator 32. As a power source, a battery 33 is provided together with the refrigerator 32 and attached under the frame 22.

  The cold box 31 is a rectangular parallelepiped box whose inside is thermally insulated by a heat insulating material, and its upper surface is opened and closed by an open / close lid 34 having a front side as a hinge. The inside of the cold box 31 is forcibly cooled by a refrigerator 32 attached to the lower surface side of the frame 22 of the carriage 21.

  The refrigerator 32 is a commercially available product in which a compressor, a radiator and the like driven by a built-in electric motor are unitized. The refrigerator 32 is attached in a suspended state to an overhang portion of the frame 22 that protrudes rearward from the rear end of the single-seater electric vehicle 10, and a condenser combined with the refrigerator 32 is disposed in the cold box 30. As a result, the inside of the cold box 30 is kept at a predetermined low temperature. The battery 33 is for driving a drive motor of the compressor, and is attached to the lower surface side of the frame body 22 of the carriage 21 in a state of being arranged side by side with the refrigerator 32.

  The volume of the cool box 31 constituting the cool unit 30 is, for example, about 100 liters, and the capacity of the refrigerator 32 combined therewith is, for example, 37 W, and the weight is about 9.5 kg. In addition, the voltage of the battery 33 is, for example, 12V and the capacity is about 720 W, which is sufficient to maintain the inside of the cold box 31 at a low temperature for a long time.

  On the other hand, the total length of the single-seater electric vehicle 10 that is a towing vehicle is not more than 2500 mm of the minicar standard, including the length of the accompanying vehicle 20, and is the upper limit value of 2495 mm here. And in order to make the total length including the accompanying vehicle 20 to 2500 mm or less, the total length of the single-seater electric vehicle 10 is suppressed to about 2/3 of 2500 mm which is the maximum length of the minicar standard, and the remaining is the total length of the accompanying vehicle 20. It is used for a part.

  The battery voltage of the single-seater electric vehicle 10 is 48V, 60V, 72V depending on the number of battery units, and cannot be directly used as the power source of the refrigerator 32. When equipped with a general-purpose power source, this general-purpose power source can be used as a battery for the refrigerator 32.

  Next, functions of the cold insulation trailer of the present embodiment, that is, the accompanying vehicle 20, and the cold insulation unit 30 mounted thereon will be described.

  Since the accompanying vehicle 20 is connected to the single-seater electric vehicle 10 of the electric minicar specification, the maximum loading load exceeding 100 kg can be ensured while the load applied to the single-seater electric vehicle 10 is suppressed to 30 kg or less.

  Even when the accompanying vehicle 20 is connected to the single-seater electric vehicle 10, the total length is limited to 2500mm or less for minicar specifications, so it is easy to drive, even in places where cars cannot enter, such as streets and event venues It is easy to get an entry permit and a parking permit. However, it is difficult to secure a power source in such a place.

  However, in this embodiment, the accompanying vehicle 20 is a cold insulation trailer, and not only the cold insulation box 31 having heat insulation is mounted, but also the refrigerator 32 is combined with the cold insulation box 31, so that it opens and closes for a long time. Even if the door 31 is repeatedly opened and closed, the inside of the cold box 31 can be kept at a predetermined low temperature. In addition, since the refrigerator 32 includes the battery 33 itself, the temperature in the cold box 31 can be maintained without using the power supply of the single-seater electric vehicle 10, and if the battery 33 is exhausted, the single-seater electric vehicle is also provided. Ten power sources can be used.

  Therefore, it is suitable not only for transporting frozen and refrigerated products, but also for selling ice confectionery, frozen confectionery, etc. at streets and event venues, and the use of the single-seater electric vehicle 10 can be greatly expanded compared to the conventional one.

10 Electric single-car electric vehicle (traction vehicle)
11 Cargo Truck 12 Rear Wheel 20 Accompanied Car (Cooling Trailer)
21 Bogie 22 Frame 23 Wheel 24 Vertical member 25 Connecting device 26 Swing arm 27 Spring / damper unit 28 Support stand 30 Cooling unit 31 Cooling box 32 Refrigerator 33 Battery

Claims (4)

An in-vehicle cold-retaining unit attached to the loading platform of a self-propelled vehicle,
A cold box having heat insulation and the upper surface side being an open / close lid;
A refrigerator with a built-in drive motor attached to the lower surface side of the cold box to forcibly cool the inside of the cold box;
A vehicle-mounted cold insulation unit comprising a battery attached to the lower surface side of the cold insulation box together with the refrigerator to drive a drive motor in the refrigerator. The in-vehicle cold insulation unit according to claim 1,
The self-propelled vehicle is an in-vehicle cold storage unit that is an electric minicar in a bicycle with a first kind motor specified by the Road Transport Vehicle Law. A cold trailer towed by a self-propelled vehicle having a prime mover and a steering device,
A cart that is removably coupled to the self-propelled vehicle via a coupling device;
A cold box with an open / close lid mounted on the cart;
A refrigerator with a built-in drive motor attached to the lower surface of the carriage to forcibly cool the inside of the cold box;
A cold trailer comprising: a battery attached to the lower surface side of the carriage together with the refrigerator to drive a drive motor in the refrigerator.   The cold-reserving trailer according to claim 3, wherein the self-propelled vehicle is an electric minicar in a bicycle with a first kind motor specified by the Road Transport Vehicle Law.

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