JPH10147149A - Box type cargo chamber automatic opening and shutting door for for cargo vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate the opening and shutting of a door by a worker whose both hands are occupied by forming horizontal-pull opening/shutting type slide door part which can be freely pulled in and out of a door storage space in a door receptacle part by means of an automatic opening and shutting drive unit. SOLUTION: In a door receptacle unit 2, a housing port 22, through which a slide door unit 3 is housed, is arranged on the free end part, which the whole of the inside of the door receptacle unit 2 is formed into a hollow box as a door storage space 23 so as to store the slide door unit 3, and consequently, a combined door unit is formed. According to a sliding movement in the lateral direction along a guide rail, a cargo chamber entrance 11 on the right side can be opening and closed from the free end of the closed door receptacle unit 2. In addition, an opening and closing drive unit 4 is arranged on the side face facing the insider of the cargo chamber in the door receptacle unit 2, and in the part close to its hinge 21, a drive motor 41 is fixed. When the drive motor 41 is rotated in the normal and reverse direction so as to retract a coupling member 31 in the lateral direction, the slide door unit 3 is reciprocated in the lateral direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

SUMMARY OF THE INVENTION The present invention relates to a door structure provided at an entrance of a box-type cargo room of a freight vehicle.
The opening and closing of the doors of the conventional box-shaped luggage compartment, which was difficult for workers with both hands closed while holding the luggage, is automatically made by the action of switches and sensors, and
An object of the present invention is to provide an automatic opening / closing door for a box-type luggage compartment of a freight vehicle provided with a novel structure that enables use as a conventional entrance and exit.

[0002]

2. Description of the Related Art Over the years, the development and expansion of the domestic road network has improved road traffic nationwide, and long-distance transportation using national roads has become popular. The transportation system has changed dramatically, and many private companies have been developing home delivery services. For example, door-to-door services have become commonplace in the transport of luggage. In this way, truck transport, which has greatly contributed to the transformation of the transportation system, has increased the number of large suburban stores along the main roads and helped with the success of the mail-order sales system. As such, its importance is ever-increasing.

Under these circumstances, workers who are actually engaged in truck transport are required to make efforts to increase work efficiency by performing both work of driving a vehicle and delivery of luggage by themselves. Responsible for delivering various types of packages with completely different packaging styles and accepting the diverse needs of individuals, anywhere in the country.Especially in urban areas, narrow alleys and places with heavy traffic You have to find the right destination while driving around, and have to park and unload your luggage on a busy road with people and cars. Is the current situation.

[0004] Delivery work while parked on a public road requires careful attention to prevent collision accidents caused by running vehicles, etc. In addition, it is unavoidable to park in a narrow place and deliver other luggage as it is. If the car is parked close to the door, the rear door of the box-type luggage compartment cannot be opened or closed, or the inadvertently opened door may hit the surrounding objects. There is also a risk that such inconveniences as that may occur. And, above all, in the case of this traditional double door, it is extremely difficult to open and close the door while holding the luggage with both hands. In heavy winds, rainy weather, snowfall and other storms, it has the adverse effects of wetting the luggage and also imposes extra work on the workers. , Which has led to a reduction in work efficiency.

[0005] In view of the above situation, the present inventor has proposed
Focusing on the need to be able to easily and quickly open and close the door even if both hands of one delivery worker are blocked by luggage in a box-type cargo room of a freight vehicle, We have begun development and research on the structure, and have repeated many years of trial and error and many trial production experiments.As a result, we have finally completed and commercialized an automatic opening and closing door for a box-type cargo room with a new structure. It was a success. In the following, the configuration will be described in detail together with an embodiment representative of the present invention shown in the drawings.

[0006]

As can be clearly understood from the embodiments of the present invention shown in the drawings, the automatic opening / closing door for a box-type cargo room of a freight vehicle included in the present invention is basically as follows. It consists of a simple configuration. That is, an entrance is provided at the rear and side, or only at the rear or only the side, of a box-type cargo room that can be mounted on a freight vehicle such as a truck, a refrigerated car, a freight train, an aircraft container, and the like. A combined door portion that can be closed by at least two door portions in the width direction of the vehicle, and at least one of the combined door portions has a door storage space, or
A door storage space is also provided on either side of the front and back sides, and formed into a bag door part of an open door structure that rotates using a vertical frame part on the left or right side of the entrance or the vicinity thereof as a support part, but other than the bag door part Is an automatic opening / closing door for a box-type luggage compartment of a freight vehicle, wherein the door portion is formed as a horizontally-sliding opening / closing sliding door portion which can be freely moved into and out of a door storage space of the bag door portion by an automatic opening / closing drive section.

[0007] The combination door portion has at least one of the doors.
The sheet door section must be formed in a bag door section having a door storage space capable of accommodating the slide door section, and by retracting a slide door section described later in the door storage space, It shall function so as to open the part occupied by the sliding door part and become a part of the doorway without being disturbed by the cargo or objects near the door.

The bag door itself has a structure in which a door storage space is formed between the front and back plates (accordingly,
The door attached to the conventional box-type luggage compartment cannot be used,
It must be newly formed as a dedicated door and replaced with the existing door. ) Or a structure in which a door member from the prior art is utilized as it is, and constituent members for forming this door storage space are arranged side by side on one or both of the front and back sides (of course, even with this structure) Without using the conventional door, the door part and door storage space components are newly manufactured,
It is also possible to combine them. ).

The bag door has an opening structure in which either the left or right side is a door peripheral frame or its vicinity is a supporting portion, like the conventional door, (the door on one side of the conventional double door). ), And can be opened by itself when the entire doorway is opened. Note that the door storage space is not necessarily required to be a box-shaped one as long as it is a configuration that can secure a space for storing the sliding door portion with respect to the door portion, except for a configuration between the front and back plates. For example, it is also possible to provide a horizontal frame having a guide rail only in a portion corresponding to the upper and lower portions of the door portion side portion, and to accommodate the sliding door portion between the upper and lower horizontal frames. It is.

The sliding door part forms a part of the combination door part, and is formed in a horizontal sliding structure (sliding door structure) so as to be drawn into the door storage space of the bag door part. The structure is such that the sliding opening / closing is performed by the power from the automatic opening / closing drive unit incorporated in an appropriate place inside the car (a place that does not hinder the loading as much as possible; therefore, a place as high as possible). The sliding door portion has a structure that is stably drawn into the door storing space in consideration of the preceding bag door portion door storing space, and should be formed so as not to have a sense of strangeness with the bag door portion from the appearance. It is.

[0011] Although the sliding door needs to have a structure in which the sliding door is automatically slidably retracted into the door accommodating space of the bag door, it is limited in the structure of attachment to the entrance. Rather, for example, a structure in which a guide rail or the like provided on one or both of the upper and lower horizontal frame portions is slid as a guide, or a slide door portion is attached to the bag door portion side when the entrance is closed. It is also possible to use a structure that is completely held in a cantilever shape or the like, and any of them must be incorporated in a stable structure during traveling.

If the combination door is formed as three or more doors, the slide door directly adjacent to the bag door and all the other slide doors are also overlapped in the front-back direction. In addition to having a structure that can be drawn into the door storage space, in some cases, the slide door portion directly adjacent to the bag door portion, and the slide door portion adjacent thereto, etc. There is no slidable door that also has a door storage space that allows the door to be pulled into itself, so to speak, the slide door that is stored in the sack door is divided into multiple pieces, formed and stretched. Or it can be of a structure that can be freely, or, as shown in the embodiment described later, both left and right outer doors are formed in a bag door, and a sliding door between them is , It can be made like the structure as being pulled apart to the right.

These sliding doors not only maintain a closed state when an automatic opening / closing drive mechanism described later is stopped, but also, for example, have upper and lower guide rails provided at upper and lower horizontal frame portions. By being locked by being engaged by itself, or by incorporating a separate locking mechanism in the sliding door portion, such as a portion that comes into contact with the vertical frame portion of the doorway, or a tip portion that comes into contact with each other, In particular, double and triple safety measures have been taken to prevent the door from being accidentally opened and released during running, etc., such as unlocking the door in conjunction with the operation switch of the automatic opening and closing drive mechanism. Should be.

The automatic opening / closing drive section is a device section having a function of driving the opening / closing of the sliding door section.
Normally, a battery power source installed inside the bag door and mounted on the vehicle is used as a power source, and power generated by a drive motor, an actuator, or the like is transmitted using a rack and pinion, a belt transmission, or the like. In some cases, a spring that always urges the slide door in the opening direction and a compressor that can forcibly close the slide door are combined to open the slide door. Sometimes, the compressed air of the compressor is released,
The one that opens the slide door part by the restoring force of the spring or the one that is always urged in the opening direction by the gas spring and operates the specified switch to release the spring force and open automatically It is also possible to use such a method.

In this automatic opening / closing drive device, for example, the switch mechanism is automatically activated in response to an ingress or egress of a worker who holds a load and cannot use both hands.
A switch mechanism that is provided with a simple operation switch at an easily accessible height, such as on the peripheral wall, frame material, or door of the doorway, so that it can be easily operated with a fingertip or elbow while holding the luggage In addition, a load detection sensor is installed in a step fixed to the lower part of the entrance of the luggage compartment or equipped with a mechanism that automatically unwinds, and the operator can step on the step or temporarily place the load A switch mechanism that detects these loads and drives automatically, or an optical sensor that uses infrared light or laser light near the entrance and exit to automatically drive when an approaching worker is detected Switch mechanism,
It is also possible to provide a switch mechanism or the like that is equipped with a sensor that recognizes and recognizes the voice of the worker, and that is configured to automatically drive when a voice is input. It is also possible to carry a remote control device utilizing the above and to use a switch mechanism configured to be activated by remote control. In the following, representative examples are disclosed so that the configuration included in the automatic opening / closing door for the box-type cargo room of the freight vehicle of the present invention described above can be understood more clearly. A specific explanation will be added.

[0016]

[Embodiment 1] A perspective view of the rear part of a box-type cargo room of the freight vehicle of FIG.
FIG. 2 is a perspective view of the luggage compartment shown in FIG. 1 with the door open, FIG. 4 is a side sectional view showing a state in which the slide door is accommodated in the bag door, and FIG.
5 is a side sectional view of the sliding door portion, FIG. 5 is a plan sectional view of the rear portion of the box-shaped luggage compartment, and FIG. 6 is a rear sectional view showing a mounting structure of the opening / closing drive portion of the sliding door portion. 1 shows an embodiment of the present invention in which a sliding door is provided at an entrance. A rectangular entrance 11 is opened at the rear of the box-shaped luggage compartment 1, and hinges 21, 21 are provided on the left vertical frame of the entrance 11.
A bag door portion 2 having a width that allows approximately half of the total opening width to be double-opened is attached through 1,. Outside the free end of the bag door portion 2, the operating lever is operated to reduce the length of the bag door portion 2 to be shorter or shorter than the vertical length thereof, and to extend longer than the bag door portion 2 up and down. The bag door is unlocked by engaging and disengaging latches provided above and below the opening frame.

The bag door 2 is provided at its free end with an accommodation port 22 for accommodating a slide door to be described later, and the entire inside of the bag door 2 is formed as a hollow box as a door storage space 23. Is formed on the upper part of the inner facing wall,
A pair of left upper guide rails 24 are provided from the hinged side to the free end side by the hinges 21, 21,.
Further, a left lower guide rail 25 is laid on the inner bottom.

On the other hand, in the closed state of the bag door portion 2, the horizontal frame portion on the upper side of the entrance 11 corresponding to the opening left on the right side of the entrance 11 has an inverted "U" -shaped side cross-sectional shape. A right upper guide rail 13 similar to the one provided on the bag door 2 is provided on the inner wall facing the front and rear.
A lower right guide rail 14 similar to that provided below the bag door 2 is laid on the lower horizontal frame of the entrance 11. In the door storage space 23 of the bag door part 2,
The sliding door portion 3 is accommodated to form a combination door portion, and the upper and lower guide rails 13 and 1 on the left and right sides are provided.
The baggage doorway 11 on the right side of the free end of the closed bag door portion 2 can be opened and closed by being slid left and right along 3, 14, 24, 24 and 25.

Further, an opening / closing drive unit 4 is provided on the side of the bag door unit 2 facing the interior of the luggage compartment.
A drive motor 41 is fixed by a mounting bracket 42 to a portion close to 1,..., And a chain 44 is wound around a drive sprocket 43 with a limit switch attached to the drive shaft thereof. It is extended to the sprocket 45, which is pivotally attached, and is wound around the same location.

On the side wall of the bag door portion 2 corresponding to the stretched portion of the chain 44, an elongated hole (not shown) having a slit shape and extending in the horizontal direction is opened, and the slide door portion 3 is formed in the elongated hole.
After passing through the distal end side of the connecting member 31 having the base connected thereto,
The slide door portion 3 is configured to be reciprocated right and left by attaching and connecting to an arbitrary portion of the chain 44 and rotating the drive motor 41 forward and backward to move the connecting member 31 left and right. . The drive sprocket 43 is provided with a drive motor 41 when the leading end of the slide door 3 is forcibly stopped by completely closing the doorway, or when an object is caught and the door is stopped. And a limit switch 46 is provided near the free end side sprocket 45. When the connecting member 31 comes into contact with the limit switch 46, the drive motor 41 is driven. Is configured to stop. A switch device (not shown) for opening and closing the slide door 3 is provided in a proper position of the frame of the entrance 11 of the luggage compartment 11 and in the cab.

[0021]

Embodiment 2 The example shown in the plan sectional view of the rear part of the box-shaped luggage compartment in FIG. 7 and the plan sectional view of the rear part of the luggage compartment in FIG. This is another example of the automatic opening / closing door included in the present invention, in which a door storage space is integrated with the back side of the door part of the existing box-shaped luggage compartment arranged on the left side of the drawing to form the bag door part 2. This is an embodiment of the present invention. A door having only a right end opened on the back surface of an existing door portion 2a pivoted in a double-opened manner by a plurality of hinges 21, 21,... Arranged above and below a left vertical frame portion of an entrance 11 at the rear of the box-shaped luggage compartment 1. While the housing in which the storage space 23 is formed is attached and integrated, the existing door 2a is removed from the entrance 11 left on the right side, and the sliding door 3 has a width equal to or larger than the width thereof. Is installed separately, and the door storage space 2
It is formed so that it can be retractably stored in the inside 3.

Left upper guide rails 24, 24 extending left and right, respectively, are provided on the upper side of the inner wall of the housing 23a constituting the door storage space 23. Furthermore, the lower surface of the housing 23a is upwardly convex. A left lower guide rail (not shown) forming a strip is laid, and the sliding door portion 3 accommodated in the door accommodating space 23 is held in a state of being sandwiched between the upper rear surfaces by the left upper guide rails 24, and ,
The lower end portion is fitted and guided by the lower left guide rail, and is slidably held in the left-right direction.

A guide bracket 12 having a cross section in the left-right direction having a substantially inverted “U” shape is incorporated in the horizontal frame portion corresponding to the upper side of the opening on the right side of the entrance 11. The right upper guide rails 13 are provided on the inner facing surfaces so as to be continuous with the left upper guide rails 24 provided on the housing 23a side of the closed bag door portion 2. At the same time, a lower right guide rail that is continuous with the lower left guide rail is laid in a horizontal frame portion corresponding to a lower side of the opening. An opening / closing drive unit 4 is mounted above the wall surface on the cargo room 1 side of the housing 23a, and its hinges 21, 21 and 21 are provided.
A drive motor 41 is arranged on the side close to..., And the driving force is transmitted to the slide door portion 3 by the transmission of the chain 44.

[0024]

Embodiment 3 FIG. 9 is a plan sectional view showing the rear end of a box-type cargo compartment of a freight vehicle, and FIG. 10 is a plan sectional view showing a state where left and right bag doors are opened and closed like a double door. Is a further embodiment of the present invention, which is a typical embodiment in which a combination door is formed by four doors.
The upper and lower hinges 21, 21,..., Are provided on the left and right vertical frame portions of the entrance 11 at the rear of the box-shaped luggage compartment 1 with approximately 1/1 of the total opening width.
Left and right two bag doors 2, 2 each having a width of about 4 are attached, and each of the bag doors 2 has a sliding door 3, 3 sliding from the free end side in a retractable manner. The door storage spaces 23 are formed in advance so as to be accommodated, and the configuration is completely symmetrical. Therefore, in the following, particularly, only the left bag door portion 23 will be described. The configuration will be described, and the configuration of the right bag door section 23 will be omitted.

The bag door portion 2 has a receiving opening 22 for drawing in the sliding door portion 3 at its free end, the inside of which is formed as a cavity to secure a door storage space 23, and the upper wall facing the upper side. Has a pair of outer upper guide rails 2 extending left and right.
4 and 24 are formed so as to be able to hold the front and back upper ends of the sliding door portion 3, and an outer lower guide rail (not shown) is laid on the inner bottom portion to hold the lower end of the sliding door portion 3. .

On the other hand, the lateral frame on the upper side of the entrance 11 corresponding to the opening left at the center of the entrance 11 in the closed state of the bag door portion 2 has an inverted "U" -shaped side cross-sectional shape. The guide bracket 12 formed on the bag door 2 is fixed to the outer side guide rails 24, 2 provided on the bag door 2.
Central lower guide rails 13 and 13 similar to 4 and a central lower guide similar to the outer lower guide rail provided below the bag door 2 are provided on the horizontal frame below the entrance 11. Rails 14 are laid.

The respective door storage spaces 2 of the left and right bag doors 2 and 2
Each of the sliding doors 3, 3 is formed in the combination doors 3 and 23 with four sliding doors, which are configured to accommodate the sliding doors 3, 3 one by one. Are the outer upper guide rails 24, 2 on the side of the left and right doors 2, 2.
4, the outer lower guide rails, and the central upper guide rails 13, 13 between them, and the central lower guide rails can be freely shifted between each other. Only the center side can be opened and closed while the entrance 11 of the parts 2 and 2 is closed. The opening and closing operation is performed by opening and closing the hinge 2 of the opening and closing drive unit 4 provided on the upper side surface of the bag door unit 2 facing the luggage compartment.
Drive motor 4 incorporated on the side close to 1, 21, ...
1 is reversed, and is carried out by the same conductive structure as the above-described embodiment.

[0028]

Embodiment 4 FIG. 11 is a plan sectional view of the side of the box-shaped luggage compartment, and FIG. 12 is a plan view of the side of the luggage compartment showing the state of opening and closing the bag door provided with the open / close drive unit. Is an embodiment in which the entrance 11 is provided on the side of the luggage compartment, and these are also included in the present invention. The bag door portion 2 pivotally attached to the left vertical frame portion of the entrance 11 formed on the side portion of the box-shaped luggage compartment 1 so as to be openable by hinges 21, 21,. The width of the entrance 11 is formed to be about half the width of the entrance 11, and the portion of the entrance 11 left on the right side is slid from the free end side into the door storage space 23 formed inside the bag door 2. The structure is such that it can be opened and closed by a sliding door portion 3 which is movably accommodated.

The bag door portion 2 has left upper guide rails 24, 24 extending left and right in the upper portion between the inner walls, and a left lower guide rail (not shown) laid on the lower surface of the inner side. Is pulled into the bag door portion 2 and, when stored, the upper end side thereof is the left upper guide rail 24,
24, the lower end is fitted and slidably supported by the left lower guide rail, and is disposed above the inner side wall of the luggage compartment 1 of the bag door 2 as in the above embodiments. The drive motor 41 of the opening / closing drive unit 4 is rotated in the normal / reverse direction, and the driving force is transmitted to the connecting member 31 by the chain 44 to open / close in the left / right direction.

The supporting and guiding structure of the sliding door 3 between the closed bag doors 2 at the doorway 11 is the same as that of the above-described embodiments. , 13 and the lower right guide rail 14. In each of the above-described embodiments including the fourth embodiment, the opening and closing of the bag door 2 is performed by opening and closing the door storage space 23 of the bag door 2.
Unless the sliding door portion 3 is completely pulled into the housing, the opening and closing drive portion 4 is formed in a structure that cannot be opened and closed in a double-clicked manner unless the bag door portion 2 is opened.
The safety device that does not operate the drive motor 41 is also incorporated at the same time.

[0031]

The automatic opening / closing door for a box-type luggage compartment of the present invention having the above-described configuration is, for example, provided that a simple manual switch is arranged at a predetermined position of the entrance 11 or the like. It is necessary to switch each time with an elbow or the like, and if switches that operate with various sensors are provided in advance instead of the manual switch, the switches are automatically switched when the worker advances to a predetermined range. Is activated,
The driving motor 41 operates, and the driving force is transmitted by the chain 44. In the case of the first embodiment, the sliding door 3 is
From the upper right and lower guide rails 13, 13, 14 from the upper right and lower guide rails 24, 24, 25
Side, the right side of the entrance 11 is automatically opened, and the slide door 3 is provided in the door storage space 23 of the bag door 2.
The chain 44 is completely accommodated in the housing and stops by abutting against the inner portion thereof, so that the chain 44 is forcibly stopped, and the drive motor 4 is stopped.
1, a driving sprocket 43 with a limit switch detects a stop state and automatically drives the driving motor 4.
1 is stopped, and the automatic opening is completed. In this state, if necessary, the lock of the bag door 2 is unlocked and the door 11 is opened to make the entrance 11 fully open as shown in FIG. However, the opening of the bag door part 2 must be separately performed by an operator.

After the loading and unloading operations of all the luggage are completed, if the bag door 2 is opened, it is first closed and securely locked, and then the drive motor is operated manually or by a switch operation by a sensor. The slide door 3 is moved from the upper left and lower guide rails 24, 24 and 25 to the upper right and lower guide rails 13 by moving the connecting member 31 in the direction in which the slide door 3 closes. , 13, 14
When the leading end of the sliding door 3 is brought into contact with the vertical frame of the entrance 11, the connecting member 31 touches the limit switch 46, and the driving of the drive motor 41 is automatically stopped, and the closing operation of the slide door 3 is completed. . Thereafter, when the vehicle is to be moved to another place without stopping at the place and performing the loading / unloading work, the limit switch 46 itself is turned off at the base or placed separately for safety reasons. Lock the locking device manually.

The examples of the automatic opening / closing doors for the luggage compartment shown in the second and third embodiments are either ones of the doors which are pre-installed at the rear entrance of the ordinary freight vehicle (in each of these examples, the left side is the left side). The door 23) is used as it is, and the housing 23a in which the separately prepared slide door 3 is freely inserted into and removed from the door storage space 23 is integrated on either side of the front and back (preferably the back side). As described in each of the embodiments, the guide rails 24, 2 are inserted into the entrance 11 corresponding to the removed existing door on the right side as specified.
4 and 25 are retrofitted to form a combination door that opens and closes in the same manner as described above. Basic opening and closing operations are performed in the same manner as described above.

In the automatic door for the luggage compartment of the third embodiment,
Since the combination door is composed of 4 and has an automatic opening / closing structure in which two of the doors are double-pulled, this is an example that effectively acts on the entrance of the luggage compartment where the opening / exit opening must be widened. In the case of No. 4, the doorway 11 is not in the rear part but only in the side part, or in the luggage compartment having a structure formed on the side part together with the rear part. It specifically shows that the automatic opening / closing door for a luggage compartment of the invention can be incorporated, and the basic opening / closing operation is the same as described above.

[0035]

As described above, according to the automatic opening / closing door for a box-type luggage compartment of a freight vehicle according to the present invention, the cargo transport work of a truck or the like has recently become common in the delivery work method by one worker. In this way, the complexity of the work of loading and unloading luggage must be removed only after opening and closing the door as before, and the driver and operator alone can drop the luggage on the ground once. It is necessary to go up the steps while holding the luggage, switch the switch with your body part such as hand or elbow, or open and close the door automatically by operating the sensor If there is a door, the entrance and exit will be fully opened, and then it will be possible to carry out the loading and unloading work efficiently, so that the worker will be freed from troublesome door opening and closing work, greatly reducing the burden on the worker, and improving the delivery work efficiency. Becomes capable of exhibiting a very soo features that it is possible to up to the width.

In addition, the automatic opening / closing door for a box-type luggage compartment of the present invention can be realized by using only the combination door portion to be incorporated in the luggage compartment entrance and exit and utilizing the existing luggage compartment structure as it is. Therefore, in addition to the practical feature that it can be adopted very easily, in some cases, one of the existing doors can be used as it is, and a door storage space is formed on one or both sides of the door It can be easily manufactured, can be made extremely easy and economical, and has an effect that it can be widely spread and expanded.

In particular, in the case of realizing the door storage space 23 as shown in each of the first to fourth embodiments, in addition to the above-described features, it is more excellent in practical use. According to the vehicle equipped with these adopted luggage compartments, the sliding door portion 3 can be slidably stored in the bag door portion 2 side very smoothly. By reducing the radius by half, it becomes extremely convenient to open and close doors in densely populated areas, on roads with many parked vehicles and in heavy traffic, or in narrow underground parking lots, which improves the efficiency of transporting goods by trucks and other vehicles. This will significantly reduce the amount of labor required by workers.

As described above, the automatic opening / closing door for the box-type luggage compartment of the freight vehicle of the present invention can reliably achieve the intended purpose by a novel structure, and its structure is relatively simple. Because it is easy to manufacture and can be offered to the market as an inexpensive product, it is necessary to park freight vehicles in densely populated residential areas such as Japan or on busy roads and deliver various types of luggage. It is expected that the transport industry as well as related people will be highly evaluated as an optimal luggage compartment for vehicles in the transport industry under special circumstances.

[Brief description of the drawings]

The drawings show some typical embodiments embodying the technical concept of the automatic opening / closing door for a box-type luggage compartment of the freight vehicle of the present invention.

FIG. 1 is a perspective view illustrating a rear part of a box-shaped luggage compartment according to a first embodiment.

FIG. 2 is a perspective view showing a state where a bag door portion of the luggage compartment of FIG. 1 is opened.

FIG. 3 is a side sectional view of the bag door part of FIG. 1;

FIG. 4 is a side sectional view of the sliding door unit of FIG. 1;

FIG. 5 is a plan sectional view of a door provided at a rear part of the luggage compartment of FIG. 1;

FIG. 6 is a plan sectional view in which an opening / closing drive unit is provided for the door of FIG. 5;

FIG. 7 is a plan sectional view of a door provided at a rear part of a luggage compartment according to the second embodiment.

8 is a plan sectional view in which an opening / closing drive unit is provided for the door of FIG. 7;

FIG. 9 is a plan sectional view of a door provided at a rear part of a luggage compartment according to the third embodiment.

FIG. 10 is a plan sectional view in which an opening / closing drive unit is provided for the door of FIG. 9;

FIG. 11 is a plan sectional view of a door provided on a side of a luggage compartment according to a fourth embodiment.

12 is a plan sectional view in which an opening / closing drive unit is provided for the door of FIG. 11;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Box-type luggage room 11 Same doorway 12 Same guide bracket 13 Same right upper guide rail 14 Same right lower guide rail 2 Bag door part (flat door part) 21 Same hinge 22 Same accommodation opening 23 Same door storage space 23a Same housing 24 Upper left guide rail 25 Lower left guide rail 3 Slide door 31 Connecting member 4 Opening / closing drive 41 Drive motor 42 Mounting bracket 43 Driving sprocket 44 Chain 45 Sprocket 46 Limit switch

Claims (6)

[Claims] 1. A doorway provided at the rear and / or side of a box-shaped cargo compartment of a freight vehicle, the opening width direction of which is at least 2
Combined doors that can be closed by two doors are erected, and at least one of the doors has a door storage space itself, or either side of the door. , And a bag door portion having an open door structure that rotates with a vertical frame portion on either the left or right side of the entrance or the vicinity thereof as a support portion, The door portion other than the door portion is formed as a sliding door portion having a horizontal pulling opening / closing structure that allows an automatic opening / closing drive portion to freely enter and exit the door storage space of the bag door portion. Automatic door for room. 2. A doorway provided at the rear and / or side of a box-shaped cargo compartment of a freight vehicle, the opening width direction of which is at least two.
Combined doors that can be closed by two doors are erected, and at least one of the doors has a door storage space itself, or either side of the door. , And a bag door portion having an open door structure that rotates with a vertical frame portion on either the left or right side of the entrance or the vicinity thereof as a support portion, Doors other than the door are guided by guide rails provided independently of the bag door at the top and bottom of the entrance, or either one of them, so that the door can be moved freely into and out of the door storage space of the bag door. The opening and closing structure is formed on a sliding door part whose structure is operated by a signal to an automatic opening and closing driving part. After the slide door is pulled into To such box-loading chamber for automatic opening and closing doors of goods vehicles, characterized in that it shall become restricted. 3. The combination door comprises three doors, at least one of which is formed as a sliding door, and at least one of the other two adjacent doors is a bag door. 3. The automatic opening / closing door for a box-type luggage compartment of a freight vehicle according to claim 1, wherein the automatic opening / closing door is formed in a portion. 4. The combination door is composed of three door parts, one of the left and right outer ones thereof is a bag door part, and the middle one adjacent thereto is a slide door also serving as a bag door part. 3. The automatic opening / closing door for a box-type luggage compartment of a freight vehicle according to claim 1, wherein the portion and the remaining one are formed on a sliding door portion. 5. The combination door comprises four door portions, two of which are formed on the left and right outer sides thereof are formed on the bag door portion, and the other two are formed on the slide door portion. Or the automatic opening / closing door for a box-type luggage compartment of the freight vehicle according to any one of 2. 6. An automatic opening / closing drive unit detects a detection signal from a load sensor incorporated in a step which is preliminarily arranged so as to be able to enter and exit below the entrance, or an optical sensor such as an infrared ray or a laser beam installed in a frame part of the entrance. It is configured to be activated by triggering any output of the detection signal, or to be activated by triggering an input signal by any of a worker's voice input or the switch switching operation. An automatic opening / closing door for a box-type cargo room of a freight vehicle according to any one of claims 1 to 5.