JP3165897B2 - Electric doors on cargo carriers - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric door of a cargo carrier for transporting cargo such as trucks and trailers.

[0002]

2. Description of the Related Art In general,
Some of such luggage transport vehicles have a box-type luggage carrier provided at the rear of the vehicle and a door provided at an opening for loading and unloading the luggage to provide functions such as crime prevention and cooling. By the way, in such a device, a door curtain composed of a plurality of panel bodies connected in a series is provided with a vertical rail portion provided on the left and right sides of the opening, and a curved portion located at the upper end of the opening. The guide rail is movably guided by a substantially inverted L-shaped guide rail having a corner rail section and a storage rail section along the ceiling surface, so that a closed position located on the vertical rail section and an open position located on the storage rail section. There is one that opens and closes. Then, the hanging body connected to the lower end of the door curtain is wound by a balance type winding machine which is designed to approximately balance the weight of the door curtain by the biasing force of the balance elastic machine. In this case, the door curtain is opened and closed. However, in this case, in order to perform the opening and closing work, the worker himself is required to push up and down the door body, and when the door is in the open position, the door curtain is at a high place, It is necessary to lower the door curtain, for example, by the operator getting on the loading platform.In order to avoid this, it is proposed to provide a pulling device such as an operation string on the door curtain to perform the closing operation. In such a case, some processing is required so that the operation pulling tool does not become an obstacle, and it is troublesome and complicated anyway, and the workability is poor.

In order to solve this problem, it is conceivable to automatically open and close the door using an electric motor. In this case, the workability of loading and unloading the cargo and the load capacity are not reduced. Consideration is essential, one of which is that the effective area of the opening is not reduced. By the way, when the electric motor is disposed above the opening, there is a problem that the effective area of the opening is reduced by the space for disposing the electric motor. Therefore, as shown in FIG. There is also an attempt to dispose under the floor of the carrier, but in this case, a through hole 1a through which a transmission chain for transmitting the driving force of the motor passes must be formed in the floor of the carrier, and machining on the vehicle body side is required. In addition, since it is practically impossible to seal the through hole 1a, the inside of the cargo bed is ventilated to the outside air through the through hole 1a. There's a problem.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and aims to provide an electric opening / closing door in a cargo carrier of a cargo carrier which can eliminate these disadvantages. A vertical rail portion is provided on the left and right sides of a back opening of a box-type carrier provided at the rear of the vehicle, and a door curtain constituted by a plurality of panel bodies connected in series is provided. The guide rail is movably guided to a substantially inverted L-shaped guide rail having a curved corner rail portion 6b located on the vertical rail portion and a storage rail portion along the ceiling surface. Opening and closing between the open position, the electric motor provided at the back end of the storage rail, and the left side of the box-type carrier parallel to the storage rail
Auxiliary rails laid on both right sides, an operating body guided and moved by the auxiliary rails, and a forcible provided between the operating body and the electric motor output shaft for forcibly moving the operating body guided by the auxiliary rails. a movable body, and constitute a connecting member for connecting the operating member and the door curtain, effector based on the forward and reverse drive of the electric motor in tandem to move the auxiliary rail opening and closing of the door curtain co When configured to perform
The laying position of the auxiliary rail, the lower side of the storage rail
A motorized door in bed freight truck, characterized in that the set.

[0005] The present invention is, Yotsute to this configuration, luggage
The door body can be automatically opened and closed using an electric motor while securing a large loading space for the door.

[0006]

Next, an embodiment of the present invention will be described with reference to the drawings. In the drawings, reference numeral 1 denotes a box-type carrier of a freight carrier, which has an opening 2 for loading and unloading on the back surface of the carrier 1, and an electric opening / closing door 3 according to the present invention. Is provided. The door curtain 4 constituting the electric opening / closing door 3 is formed by connecting a plurality of panel bodies 5 rotatably via an interlock type or a hinge or the like, and is formed in a series. A roller 5a protrudes from both side edges, and the roller 5a
a is movably fitted to guide rails 6 erected on both left and right sides of the loading opening 2, the guide rails 6 are vertical rails 6 a located on both sides of the opening 2, Curved corner rail section 6 located at the upper end of section 2
b, and is formed in a substantially inverted L-shape having a storage rail portion 6c along the ceiling surface, and the door curtain 4 has a closed posture located at the vertical rail portion 6a and an open posture located at the storage rail portion 6c. It opens and closes in between.

Reference numeral 7 denotes an auxiliary rail laid along the lower side of the storage rail 6c. The auxiliary rail 7 is formed to have substantially the same length as the storage rail 6c. An electric motor 8 with a reduction gear is integrally fixed to the end frame. The drive shaft 8a of the electric motor 8 extends over the left and right storage rails 6c. The output pulley 8b is provided opposite to the drive shaft 8a and supported by the rear end of the auxiliary rail 7 on the side of the frame. The power is transmitted by a wire rope, a belt, or the like. Further, a driven pulley 9 is pivotally supported on the opening end skeleton side of the auxiliary rail 7, and a forced force constituted by members such as a roller chain, a wire rope, and a belt is provided between the output pulley 8b and the driven pulley 9. The moving body 10 is suspended.

Further, reference numeral 11 denotes an operating body which is integrally fixed to the forcibly moving body 10 so that a guide roller 11a provided on the operating body 11 is movably guided by the auxiliary rail 7. As a result, the forced moving body 10 is driven by the pulleys 8
When moving between b and 9, the operating body 11 is forcibly moved to reciprocate on the auxiliary rail 7. On the other hand, of the panel body 5 constituting the door curtain 4, brackets 1 are provided on the left and right upper edges of the top panel 5 b.
2a is integrally fixed, and one end of a connecting rod 12 is pivotally connected to the bracket 12a. The other end of the connecting rod 12 is pivotally connected to the operating body 11, and thus the door curtain 4 Is connected to the operating body 11. The operating body 11 is connected to the driving of the electric motor 8 so that the operating body 11 is connected to the auxiliary rail 7.
By reciprocating above, the door curtain 4 is guided and moved by the guide rail 6 to open and close the opening.

A winding device 13 assists the opening and closing operation of the door curtain 4 by the operating body 11. The winding device 13 is elastically mounted on a winding shaft 13a and is constantly biased in a winding direction. The wire 14 connected to the lowermost panel 5c of the door curtain 4 is wound on the winding shaft 1 by balancing the biasing force of the wound-up winding machine 13b and the weight of the door curtain 4.
The motor 3 is configured to be wound up and unwound, so that the load on the electric motor 8 is reduced.

In the embodiment of the present invention constructed as described above, when an attempt is made to open and close the door curtain 4 of the electric opening / closing door 3 provided in the opening portion 2 for loading and unloading luggage, a switch (not shown) is turned on. When the electric motor 8 is driven by the operation, the forced moving body 10 interlocked with the electric motor 8 forcibly reciprocates the operating body 11 on the auxiliary rail 7, and the door curtain 4 connected thereto is connected to the vertical rail section. 6a from the storage rail 6c to the opening 2
Is automatically opened and closed.

[0011] Thus, the present invention Te smell <br/> that performed, although the opening and closing of the door curtain 4 by simply a simple operation of switch operation is intended to perform automatically, auxiliary rail 7 Is disposed at a position along the lower side of the storage rail 6c without impairing the effective area of the opening, and the operating body 11 guided by the storage rail 6 is configured to pull the door curtain 4, so that the electric motor 8 is connected to the storage rail 6c. And the effective area of the opening 2 is not narrowed by the electric motor 8. And this one,
Since the auxiliary rail 7 is provided below the storage rail 6c and is not provided above the storage rail 6c, the storage rail 6c can be set as high as possible. The auxiliary rail 7 is provided between the door curtain 4 accommodated in the ceiling of the loading platform and the ceiling surface.
Arrangement of auxiliary rail 7 as in the case of arrangement above 6c
It no connexion stacking volume that there is no need to secure a wasted space of minutes to occur to space resulting in summer small, furthermore, it without substantial frontage height of the opening portion 2 resulting in summer low, It can be configured as wide as the conventional manual type.

Further, in this case, since the electric motor 8 is provided on the rear end side of the storage rail 6c, a space for mounting the electric motor 8 is bothersomely provided on the vehicle body side as in the prior art. It is not necessary to provide a through-hole to penetrate the transmission chain by providing it, and as a result, it can be adopted for vehicles that require airtightness inside the cargo bed, such as a cold storage car. Can be high. In addition, since each member such as the electric motor 8 and the operating body 11 is arranged at a position where it can be easily viewed from the bed of the vehicle, mounting work is easy.
Maintenance can also be easily performed.

It should be noted that the present invention is not limited to the above-described embodiment, and it is not necessary to use a winding device with a winding bobbin in addition to driving the electric motor. Each of the guide rails 6 may be provided one by one.

[0014]

In summary, since the present invention is constructed as described above, the operating body is forcibly reciprocated on the auxiliary rail by the forcible moving body connected to the electric motor. The opening / closing operation of the opening that moves the door curtain connected to the body via the connecting body between the closed position on the vertical rail portion and the open position on the storage rail portion is automatically performed. As described above, in the present invention, the opening and closing of the door curtain can be automatically performed by driving the electric motor. However, the auxiliary rail is provided at a position along the lower side of the storage rail without impairing the effective area of the opening. Since the operating body guided by this is configured to pull the door curtain, the electric motor can be arranged on the deep end side of the storage rail, and the effective area of the opening is determined by the electric motor. They do not become too narrow. Moreover, in this device, the auxiliary rail is disposed below the storage rail, so that the auxiliary rail is disposed above the storage rail.
Auxiliary rails are installed above the door curtain in the storage position
No more dead space is created,
Can the storage rail in the highest possible position, which in it to be moved closer to between the Yotsute door curtain and the ceiling surface
Therefore, the arrangement of the auxiliary rail does not reduce the load volume, and does not reduce the substantial frontage height of the opening, and is as wide as the conventional manual type. Can be configured into something.

Further, in this case, the electric motor is disposed on the inner end side of the storage rail.
Unlike the conventional one, there is no need to provide a special mounting space on the vehicle body side, and there is no through hole in the vehicle body, as a result, even for vehicles that require airtightness inside the cargo bed such as insulated cars It can be adopted and can be highly versatile. Further, since the members such as the electric motor and the operating body are arranged at positions where they can be easily viewed from the cargo bed of the vehicle, the mounting work is easy and the maintenance can be easily performed.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing an outline of a freight carrier.

FIG. 2 is a side view showing a main part of an electric door.

FIG. 3 is a main part rear view showing the electric opening / closing door.

FIG. 4 is a sectional plan view showing an electric door.

FIG. 5 is a side view of a main part showing a conventional example.

[Description of Signs] 1 Loading bed 3 Electric open / close door 4 Door curtain 6 Guide rail 6c Storage rail 7 Auxiliary rail 8 Electric motor 10 Forced moving body 11 Working body 12 Connected body

Claims (1)

(57) [Claims] 1. A vertical rail portion provided on the left and right sides of a back opening of a box-type carrier provided at a rear portion of a vehicle, the door curtain comprising a plurality of panel bodies connected in a series, and the opening. A closed corner and a storage rail located on a vertical rail are movably guided by a curved corner rail 6b located at the upper end of the vertical rail and a substantially inverted L-shaped guide rail having a storage rail along the ceiling surface. An electric motor installed at the back end of the storage rail and an auxiliary motor laid on the left and right sides of the box-type carrier in a state parallel to the storage rail. A rail, an operating body guided and moved by the auxiliary rail, a forced moving body provided between the operating body and the electric motor output shaft for guiding the operating body by the auxiliary rail and forcibly moving the operating body, Together with it constitutes a connecting member for connecting the door curtain, effector based on the forward and reverse drive of the electric motor in tandem to move the auxiliary rail configured to open and close the door curtain , The auxiliary race
The electrically operable door on the cargo carrier's carrier , wherein the laying position of the rack is set below the storage rail .