JP2017179844A - Automatic opening-closing door for freight vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily and surely perform emergency-release when releasing a slide door in a nonoperable state in an emergency, while expanding a storage inside space in a baggage room, by making an expansion door compact, by providing a main part of an opening-closing structure of the slide door on the baggage room side.SOLUTION: An automatic opening-closing door comprises an expansion door 4 installed so as to open in the horizontal direction with the side edge of an opening part 3 of a baggage room 2 as the rotational center, a slide door 5 installed in the expansion door 4 so as to slidably open and close, an opening-closing driving part 6 installed in the opening part 3 and having an operation piece 6c for slidably moving the slide door 5, an operation piece side engaging part 6a installed in the operation piece 6c and a slide door side engaging part 5a installed in the slide door 5 and detachably engaging with the operation piece side engaging part 6a, and is formed so that the slide door side engaging part 5a detachably engages with the operation piece side engaging part 6a when closing the expansion door 4 in the opening part 3 together with the slide door 5.SELECTED DRAWING: Figure 2

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door that automatically opens and closes in an opening of a box-type luggage compartment of a freight vehicle, and more particularly, an automatic door for a freight vehicle that is reduced in thickness and weight and improved in security and design. About.

  Through the development and expansion of the domestic road network over the years, the road traffic network has been improved nationwide, and long-distance transportation using national roads has become active. Truck transport, which is responsible for the home delivery service business, is becoming more and more important, helped by the increase in suburban large stores deployed along the main roads and the success of mail order systems.

  Under such circumstances, an operator who is actually engaged in trucking is required to make an effort to improve work efficiency by carrying out both the operation of the freight vehicle and the delivery of the baggage alone. Furthermore, with respect to various forms of luggage that are completely different in size, weight, shape, etc., one or two workers are responsible for accepting various people's requests and delivering them anywhere in the country. In urban areas, in particular, they traveled around narrow alleys and places with heavy traffic to find their destinations accurately, and parked freight vehicles on roads where people and cars were busy, loading and unloading luggage. The current situation is that they are forced to perform extremely difficult and dangerous work.

  Delivery work with a freight vehicle parked on a public road requires great care to prevent collision accidents caused by traveling vehicles. For example, if a freight vehicle is parked in a narrow space and another package is approaching the door while another cargo is delivered, open the double doors in the box-type luggage compartment. There was also a risk that the doors that could not be opened or were accidentally opened would hit the surrounding objects.

  In particular, if the box-type luggage compartment is a double-fold rear door, it is extremely difficult to open and close the door while holding the baggage with both hands. Sometimes brought into the luggage compartment. In the case of stormy weather such as strong winds, rainy weather, and snowfall, there are harmful effects such as wetting the luggage, and the operator is forced to perform extra work, resulting in a reduction in work efficiency.

  A conventional example will be described with reference to FIGS. As shown in FIGS. 11 and 12, an opening 53 of a box-type luggage compartment 52 (hereinafter also referred to as a luggage compartment as appropriate) of the freight vehicle 51 has a side edge on one side edge of the opening 53. The unfolding door 54 attached so as to open in the horizontal direction around the center of rotation, and the unfolding door 54 has a bag-like configuration, and the sliding door 55 is attached to the sliding door 55 so that the sliding door 55 can enter and exit and slide open and close. Cargo vehicle doors have been proposed.

  As shown in FIG. 13, the slide drive mechanism 56 that opens and closes the slide door 55 is provided at the lower portion of the deployment door 54 on the luggage compartment 52 side. The slide drive mechanism 56 has a thin opening / closing drive motor 57 that minimizes the amount of protrusion into the box-type luggage compartment 52 at the lower portion of the deployment door 54 on the cargo compartment side, and an opening / closing driven in a pendulum manner by this. An arm 58 is provided, and the tip of the opening / closing arm 58 is slidably connected to a vertical rail 59 (indicated by a virtual line) fixed to the side wall surface of the slide door 55. When the open / close operation switch is operated, the slide door 55 opens and closes in the direction of the arrow. The slide drive mechanism 56 is protected by a cover 60 (see FIG. 12).

  As shown in FIG. 11, a lock rod 61 is attached to the outside of the unfolding door 54 so that it can be freely opened and closed to the opening 53 of the box-type luggage compartment 52. By operating a lock handle 62 provided at a position below the deployment door 54, the lock rod 61 is free to engage with an engaging portion 63 provided at the upper and lower ends 61a and 61b around the opening 53. To be engaged. For example, there is a configuration in which the end portions 61 a and 61 b in which the ends of the round bars are bent in an L shape are sandwiched between the slits of the engaging portion 63.

  When the cargo is carried into the box-type luggage compartment 52, the lock handle 62 is operated to rotate the lock rod 61 so that the tip portions 61a and 61b are removed from the slits of the engaging portion 63. Thus, the deployment door 54 can be opened and closed together with the slide door 55 from the opening 53. The lock handle 62 is operated after the cargo is carried in or during transportation, and the respective leading end portions 61a and 61b are engaged with the respective engaging portions 63.

  As described above, since the lock rod 61 firmly closes the deployment door 54 together with the slide door 55 to the opening 53, the deployment door 54 opens carelessly together with the slide door 55 when the cargo vehicle 51 travels. Is preventing. This lock rod 61 type locking device has been conventionally used because it is a method of firmly fixing the deployment door 54 at its vertical position. It is a locking device that is often used especially for double doors.

  On the other hand, although not shown, a lock fitting is provided at the open / close end of the slide door 55 attached to the deployment door 54. The opening 53 corresponding to the lock fitting incorporates an automatic lock mechanism that is automatically locked in a sealed state in conjunction with the closure of the lock fitting and can be unlocked by a predetermined operation.

  The automatic locking mechanism is not shown, but for example, a motor that moves the engaging piece that holds the lock fitting of the slide door 55 in the vertical direction on the base plate, and a gear mechanism that converts the rotational force of the motor in the vertical direction. It consists of. Further, the lock fitting includes a sensor for detecting that the automatic locking mechanism is approaching, and a sensor for detecting that the engagement piece has moved to the upper end.

When the slide door 55 in the “cargo vehicle door” shown in FIGS. 11 to 13 is opened with the remote control switch, the operation shown in FIG. 14A is performed.
"Open operation"
First, the driver pulls the parking brake. The main switch cannot be turned on unless the parking brake is applied. Turn on the main switch of the driver's seat. Thus, the locking of the slide door 55 is automatically released.
Next, press the “Open” button on the remote control switch. Starts opening and stops when fully opened. This makes it possible to load and unload luggage.
In the case of a large luggage, the unfolding door 54 is manually opened. When opening the deployment door 54, it is necessary to confirm that the slide door 55 is fully opened (the slide door 55 is housed in the deployment door 54).

"Close operation"
When the slide door 55 in the “cargo vehicle door” shown in FIGS. 11 to 13 is closed with the remote control switch, an operation as shown in FIG. 14B is performed.
Press the “Close” button on the remote control switch. The slide door 55 starts the closing operation and stops in the fully closed state. In this state, it is not locked yet.
Turn off the main switch in the driver's seat. At this time, the sliding door 55 is automatically locked, and the operation ends.
Be sure to turn off the main switch in the passenger seat while driving.

"Electric emergency release operation"
In some cases, the sliding door 55 in the “cargo vehicle door” shown in FIGS. 11 to 13 cannot be opened / closed while being closed. For example, the slide door 55 may stop during the operation of locking or unlocking due to electrical causes such as noise. In such a case, an operation as shown in FIG. 15 is performed.
First, pull the parking brake. Turn on the main switch of the driver's seat.
Next, press the “Open” button on the remote control switch. Press the “Close” button of this remote control switch after an interval of 5 seconds or more. After 5 seconds or more, press the “Open” button on the remote control switch.
This unlocks the slide door 55. When the slide door 55 is closed, the slide door 55 starts to open.

"Mechanical emergency unlocking operation"
When the mechanical failure is not an electrical failure but the motor is in an inoperable state, it may not be solved by operating the remote control switch described above. At that time, an operation as shown in FIG. 16 is performed.
First, the main power switch of the vehicle battery is turned “OFF”. Turn off the main switch in the driver's seat.
The mounting screw of the rail 59 inside the deployment door 54 is removed (see FIG. 13). Remove the lock fitting of the slide door 55. As a result, the linkage operation of the slide drive mechanism 56 with the open / close arm 58 that operates like a pendulum is released. Therefore, the slide door 55 can be opened manually.
The cover 60 of the slide drive mechanism 56 mounted on the inner surface of the deployment door 54 is removed (see FIG. 12). The internal rail 59 that has already been removed is taken out.
A thumbscrew is screwed into the deployment door 54 to restrict the opening and closing of the slide door 55.

When traveling, for example, the thumbscrew attached to the lower part of the deployment door 54 is completely tightened so that the slide door 55 does not move, and the vehicle can travel.
When the slide door 55 is opened, the slide door 55 can be opened by loosening the tightened thumbscrew to a position where it does not hit the slide door 55.
When opening the deployment door 54, the deployment door 54 can be opened after the slide door 55 is fully opened and the thumbscrew is completely tightened so that the slide door 55 does not jump out of the deployment door 54.

   There has been proposed a technology related to a freight vehicle door in which a sliding door is attached to a deployment door (a kannon door) so as to slide open and close. For example, as disclosed in Japanese Patent Application Laid-Open No. 2003-82919 of “Patent Document 1”, a deployment door capable of closing approximately half of the loading / unloading port is provided at the edge of the loading / unloading port formed on the wall surface of the loading chamber. A sliding door that can close the other half of the loading / unloading port is slidably mounted in the thickness of the deployment door or on the side of the cargo compartment, and is relatively thin on the inside of the deployment door or on the side of the cargo compartment. A vehicular luggage compartment door in which a slide drive mechanism having an opening / closing drive motor is incorporated has been proposed.

JP 2003-82919 A

  As shown in FIG. 12, the conventional deployment door 54 is thick with a bag-like configuration in which the slide door 55 enters and exits. Furthermore, a slide drive mechanism 56 for slidingly opening and closing the slide door 55 is provided in the bag-shaped deployment door 54. The slide drive mechanism 56 is provided with an open / close drive motor 57 and an open / close arm 58 driven in a pendulum form by this, and these are protected by a cover 60. Since the bag-shaped deployment door 54 is increased in thickness and the slide drive mechanism 56 protrudes toward the luggage compartment 52, the space in the luggage compartment 52 is reduced.

  Furthermore, the weight of the bag-shaped deployment door 54, the weight of the slide drive mechanism 56, the weight of the slide door 55, and the weight of the entire cargo vehicle door become heavy, and it is complicated to manually open and close the deployment door 54. There is. There has been a problem that it is sometimes difficult to open and close the deployment door 54 by manpower on a slope.

  Further, the “vehicle luggage compartment door” of Patent Document 1 includes an electrical emergency release means and a mechanical emergency lock release means. However, if the sliding door 55 of the automatic open / close door breaks down or becomes inoperable while the cargo is being delivered by the cargo vehicle 51, the driver who is requested to specify the time for the collection / delivery work or to speed up the collection / delivery work by prohibiting parking will be disappointed. There are things to do. Since this open / close drive motor 57 has a structure in which the open / close arm 58 is driven in a pendulum manner by the worm gear, the open / close arm 58 cannot be operated from the slide door 55 side. In this way, even a simple emergency release means cannot be executed, and it may take a long time to release it.

  Further, in the “vehicle luggage door” of Patent Document 1, in order to lock the slide door 55 to the opening 53, it is necessary to provide a lock fitting on the slide door 55 and to incorporate an automatic lock mechanism in the opening 53. there were. For this reason, the lock fitting may be locked by the automatic lock mechanism, and may not be unlocked. Therefore, in conjunction with the emergency release operation described above, it is necessary to remove the lock fitting from the slide door 55, and emergency release on the road is almost impossible.

  Further, in the “vehicle luggage compartment door” of Patent Document 1, it takes a long time to perform the above-described operations in the reverse order when returning to the normal use state after the emergency release. It was. Of course, it was necessary to repair at the repair shop.

  It is also possible to have a structure that can easily open and close the slide door 55 that has become inoperable in the event of a failure or emergency. However, if the sliding door 55 is configured to be easily opened and closed, the sliding door 55 can be easily opened by a person other than the driver when the operator (driver) is away from the freight vehicle 51 due to the collection and delivery of the luggage. There was a problem that the luggage in the luggage room 52 was easily stolen.

  The present invention has been developed to solve such problems. That is, the object of the present invention is to provide a main part of the opening and closing structure of the sliding door on the luggage compartment side, so that the deployment door can be made compact, the interior space of the luggage compartment can be widened, and the inoperable state in an emergency. It is an object of the present invention to provide an automatic opening / closing door for a freight vehicle that can be easily and reliably urgently released when the sliding door is released.

The present invention is a freight vehicle automatic opening / closing door attached to an opening (3) of a luggage compartment (2) of a freight vehicle (1),
A deployment door (4) attached to one side edge of the opening (3) so as to open in a horizontal direction with the side edge as a rotation center;
A sliding door (5) attached to the unfolding door (4) so as to slide open and close;
An opening / closing drive unit (6) having an operating element (6c) attached to the opening (3) of the luggage compartment (2) and slidingly moving the slide door (5);
An operating element side engaging portion (6a) attached to the operating element (6c);
A sliding door side engaging portion (5a) attached to the sliding door (5) and detachably engaged with the operating element side engaging portion (6a),
When the unfolding door (4) together with the sliding door (5) is closed to the opening (3), the sliding door side engaging portion (5a) is attached to and detached from the operating element side engaging portion (6a). Will be able to engage freely,
The sliding door (5) is opened or closed at the opening (3) by the sliding movement operation of the operating element (6c) of the opening / closing drive unit (6),
When the opening / closing drive unit (6) is in an inoperable state, the sliding door (5) is manually moved to linearly move the operating element (6c), and the sliding door (5) It is characterized in that it can be opened and closed manually.
The unfolding door (4) consists of a single plate.

  The opening / closing drive unit (6) includes a rack (17) that functions as the operating element (6c), and a pinion (19) that engages and slides on the rack (17).

Alternatively, the opening / closing drive unit (6) may be one having a chain that functions as the operating element (6c) and a sprocket that rotates the chain.
As the opening / closing drive section (6), one having a belt functioning as the operating element (6c) and a pulley for rotating the belt can be used.
As the opening / closing drive unit (6), one having a piston functioning as the operating element (6c) and a cylinder for reciprocating the piston can be used.

The operating element side engaging portion (6a) has an engaging hole (6b), and the sliding door side engaging portion (5a) comprises a pin (5a),
When the unfolding door (4) together with the sliding door (5) is closed to the opening (3), the sliding door side is inserted into the engaging hole (6b) of the operating element side engaging portion (6a). The pin (5a) of the engaging portion (5a) is configured to be latched.
The opening / closing drive part (6) is preferably attached to the upper part of the opening (3).

  The opening / closing drive unit (6) can be configured to be remotely operated by receiving a signal from a remote control switch in a receiving unit attached to the opening (3) of the luggage compartment (2).

  In the present invention, the sliding door (5) attached to the unfolding door (4) to be opened and closed can be opened and closed by the sliding movement of the operating element (6c) driven by the opening and closing drive unit (6). . That is, the slider side engagement portion (5a) attached to the slide door (5) is engaged with the operator side engagement portion (6a) attached to the operator (6c). ) Is transmitted to the slide door (5), the slide door (5) is slid, and the slide door (5) can be opened and closed.

For example, as the pinion (19) driven by a motor or the like in the opening / closing drive unit (6) rotates, the rack (17) (operator (6c)) meshing with the pinion (19) is slid. The sliding door (5) can be opened and closed by linearly reciprocating the rack (17).
Similarly, in an opening / closing drive unit having a chain and a sprocket for rotating the chain, an opening / closing drive unit having a belt and a pulley for rotating the belt, or an opening / closing drive unit having a cylinder for reciprocating a piston, The sliding door (5) can be opened and closed by the linear reciprocating motion of 6c).

  During deployment of the deployment door (4), the operating element side engaging portion (6a) and the sliding door side engaging portion (5a) are not engaged. Even if 6) is operated by mistake, the slide door (5) is not inadvertently operated, and the deployment door (4) can be opened and closed safely.

When the opening / closing drive unit (6) becomes inoperable, the configuration for driving the slide door (5) is the pinion (19) and the rack (17) (operator (6c)), and the driven side (slide Operation is possible even from the door (5)), and the sliding door (5) can be manually opened and closed. Therefore, the slide door (5) can be urgently released regardless of the position at which the slide door (5) cannot be opened and closed.
Similarly, in an opening / closing drive unit having a chain and a sprocket for rotating the chain, an opening / closing drive unit having a belt and a pulley for rotating the belt, or an opening / closing drive unit having a cylinder for reciprocating a piston, 6c) can be operated from the driven side (slide door (5)), and the slide door (5) can be released urgently.

The sliding door (5) is configured to slide open and close by simply configuring the pinion (19) and rack (17), chain and sprocket, belt and pulley or piston and cylinder, and this is the conventional way to the luggage compartment (2). Since it is the structure which does not protrude, the interior space of this luggage compartment (2) can be utilized widely.
Further, since the unfolding door (4) does not need to have a bag-like configuration in which the sliding door (5) enters and exits as in the conventional case, the plate thickness of the unfolding door (4) and the sliding door (5) is the conventional configuration. Thinner than The space in the luggage compartment (2) can be further increased.

It is a perspective view which shows the state which closed both the expansion | deployment door and slide door of the automatic opening / closing door for cargo vehicles of Example 1 to the opening part. It is a perspective view which shows the state which open | released only the sliding door of the automatic opening / closing door for cargo vehicles of Example 1 (half opening). It is a perspective view which shows the state which expanded | deployed both the expansion | deployment door and the slide door of the automatic opening / closing door for cargo vehicles of Example 1, and opened the opening part (fully opened). It is a front view which shows the state which visually recognized the expansion | deployment door from the outer side. It is a front view which shows the state which visually recognized the expansion | deployment door from the inner side (luggage room side). It is a front view which shows the state which visually recognized the sliding door from the outer side. It is a front view which shows the state which visually recognized the sliding door from the inner side (luggage room side). It is a front view which shows the opening / closing drive part of the automatic opening / closing door for cargo vehicles of Example 1. FIG. BRIEF DESCRIPTION OF THE DRAWINGS It is explanatory top view explaining the open / close state of the automatic opening / closing door for cargo vehicles of Example 1, (a) is the state which closes an expansion | deployment door, (b) is the state which closes a slide door, (c) is an expansion | deployment door. And the sliding door are closing the opening. The state which a slide door side engaging part engages with an operator side engaging part is shown, (a) is an enlarged side view before engaging, (b) is an expanded sectional view of the meshing state of a pinion and a rack, (C) is an enlarged side view of the engaged state. It is a perspective view of the cargo vehicle which shows the state which closed the conventional automatic opening / closing door. It is a perspective view of the freight vehicle of the state which opened the conventional automatic opening / closing door. It is a front view of the expansion | deployment door which a part of slide door which showed the conventional slide drive mechanism cut away. The operation procedure when opening and closing the sliding door in the vehicular door with the remote control switch is shown, (a) is an opening operation, and (b) is a closing operation. The operation procedure of electrical emergency release is shown. The operation procedure of unlocking in a mechanical emergency is shown.

  The automatic opening / closing door for a cargo vehicle according to the present invention includes an unfolding door, a sliding door attached to the unfolding door so as to slide open and close, and an operator attached to the opening of the luggage compartment to slide the sliding door. And an open / close drive unit, and a slide door side engagement unit that is attached to the slide door and detachably engages with the operating unit side engagement unit. The present invention is such that when the deployment door is closed together with the slide door at the opening, the slide door side engaging portion is detachably engaged with the operating side engaging portion, By the sliding movement operation, the sliding door can be opened at the opening when the sliding door is opened and closed, and can be closed without a gap.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
<Configuration of automatic opening / closing door for cargo vehicles>
FIG. 1 is a perspective view showing a state in which both a deployment door and a slide door of an automatic opening / closing door for a cargo vehicle in Embodiment 1 are closed at an opening. FIG. 2 is a perspective view showing a state in which only the sliding door of the automatic opening / closing door for a cargo vehicle according to the first embodiment is opened (half-opened). FIG. 3 is a perspective view showing a state in which both the unfolding door and the sliding door of the automatic opening / closing door for a cargo vehicle of Embodiment 1 are unfolded and the opening is opened (fully opened).
As shown in FIGS. 1 to 3, the automatic opening / closing door for a cargo vehicle according to the present invention is formed on one side edge of the opening 3 of the box-shaped luggage compartment 2 of the cargo vehicle 1 with the side edge as a rotation center. The deployment door 4 is attached so as to open in the horizontal direction, and the slide door 5 is attached to the deployment door 4 so as to open and close. In this manner, the opening 3 can be closed by the deployment door 4 and the slide door 5, and only the slide door 5 is opened and closed by the opening / closing drive unit 6. In other words, the opening 3 is partially opened and closed by the opening / closing drive unit 6. As shown in FIG. 3, when the deployment door 4 is opened together with the slide door 5, the opening 3 can be fully opened.
The freight vehicle door of the present invention can be applied not only to the luggage compartment 2 of the freight vehicle 1 as described above, but also to a refrigerator or a freezer car of a low-temperature refrigerated vehicle.

  As shown in FIG. 3, the hinge 7 is attached to the right end edge of the deployment door 4 toward the opening 3, and the left side of the deployment door 4 is deployed (opens in a double-tone manner). This development direction is not limited to the illustrated example. This arrangement may be reversed. A hinge 7 may be attached to the left edge of the deployment door 4 so that the right side of the deployment door 4 is deployed. It can be properly used according to the type of goods delivered by the freight vehicle 1 and the road conditions.

<Configuration of opening 3>
The opening 3 of the luggage compartment 2 includes a region OT where the unfolding door 4 is closed and a region ST where the slide door 5 is closed. As shown in FIGS. 2 and 3, in the region ST where the slide door 5 is closed, a weather strip 8 made of a soft resin or rubber is attached to the left side of the opening 3 in order to improve hermeticity. Yes. An opening rail 9 on which the upper and lower edges of the slide door 5 slide is attached to the area ST where the slide door 5 is closed.

  Further, an opening / closing detection sensor 10 for checking whether or not the deployment door 4 is securely closed is provided in a region OT of the opening 3 where the deployment door 4 is closed (see FIG. 8). In the illustrated example, the opening / closing detection sensor 10 is arranged at the upper part of the opening 3, but it can also be arranged at the lower part.

  A latch lock 11 serving as a locking device is attached to the opening 3. A striker 12 (engagement receiving portion) for engaging the latch lock 11 is attached to the slide door 5. With this locking device, the slide door 5 can be firmly attached to the weather strip 8 of the opening 3 together with the unfolding door 4, and the sealing performance when the opening 3 is closed is enhanced.

  A keyhole 13 for the latch lock 11 is provided around the opening 3. A key is inserted into the keyhole 13 to lock and unlock the latch lock 11. In the illustrated example, a striker 12 (engagement receiving portion) of the latch lock 11 is attached to a slightly upper position in the vertical direction of the slide door 5. It is easy for people to stand and operate the keys. However, it goes without saying that the position where the latch lock 11 is attached may be changed according to the vehicle type and the size and shape of the opening 3. This latch lock 11 is configured to be latched and electrically unlocked.

<Configuration of deployment door 4>
FIG. 4 is a front view showing a state in which the deployment door is viewed from the outside. FIG. 5 is a front view showing a state in which the developing door is viewed from the luggage compartment side.
The unfolding door 4 is attached to one side edge of the opening 3 of the cargo compartment 2 of the cargo vehicle 1 so that the side edge is opened by a hinge 7 so as to open in the horizontal direction around the rotation center. The deployment door 4 of the present invention has a simple shape as shown in FIG. A weather strip 14 made of a soft resin or rubber is attached to the unfolding door 4 to enhance the tightness of the luggage compartment 2 (see FIG. 5).

  The unfolding door 4 of the present invention is composed of a single plate, and is formed with a step 4a in which the sliding door 5 is accommodated. The slide door 5 slides in parallel so as to overlap the deployment door 4. As described above, the unfolding door 4 is composed of a single plate and is not a bag-like structure as in the prior art, so it can be thin and light. By arranging the slide door 5 in parallel with the step 4a, the unfolding door 4 can be opened and closed safely, which contributes to improvement in design. A deployment door rail 15 on which the upper and lower edges of the slide door 5 slide is attached to the upper and lower positions of the step 4a.

<Configuration of sliding door 5>
FIG. 6 is a front view showing a state in which the sliding door is viewed from the outside. FIG. 7 is a front view showing a state in which the sliding door is viewed from the luggage compartment side.
The slide door 5 closes the opening 3 together with the deployment door 4. The slide door 5 is automatically opened and closed by an opening / closing drive unit 6. The slide door 5 slides in parallel with the deployment door 4.

  The operation of the slide door 5 is performed by a remote controller. The illustrated example shows a configuration in parallel with the outside of the deployment door 4 (the side opposite to the luggage compartment 2 side). This is to prevent contact with cargo loaded in the luggage compartment 2 when the sliding door 5 is opened and closed. However, the slide door 5 may be configured in parallel with the inside of the unfolding door 4 (the luggage compartment 2 side).

  As shown in FIGS. 6 and 7, a slide roller 5 x is provided at the upper part of the slide door 5 so as to be able to slide smoothly between the outer surface of the deployment door 4 and the opening 3, for example. As shown in FIGS. 2 and 3, it can slide between the opening rail 9 attached to the upper part of the opening 3 and the developing door rail 15 attached to the upper part of the developing door 4. Therefore, the lateral width of the slide door 5 is wider than the lateral width of the deployment door 4. Since this width is wide, this portion also serves as a position constituting the drive mechanism of the opening / closing drive unit 6. As will be described later, the slide door 5 is provided with a pin serving as the slide door side engaging portion 5a. This pin (sliding door side engaging part 5a) is detachably engaged with an engaging hole 6b which becomes the operating element side engaging part 6a of the opening / closing drive part 6.

  On the other hand, as shown in FIGS. 6 and 7, a slide guide 5 y is provided at the lower part of the slide door 5 so that it can slide smoothly between the outer surface of the deployment door 4 and the opening 3. It can slide between the deployment door rails 15 attached to the lower part of the deployment door 4.

  As shown in FIG. 7, a weather strip 16 made of a soft resin or rubber is attached to the side of the opening 3 of the slide door 5 in order to improve the sealing performance with the deployment door 4. Furthermore, a slide door full open detection magnet for detecting whether or not the slide door 5 is fully opened with respect to the deployment door 4 is provided (not shown).

  The slide door 5 is configured to engage a striker 12 attached to the periphery of the slide door 5 described above with a latch lock 11 attached around the opening 3. A key is inserted into the keyhole 13 provided in the opening 3 to lock and unlock the latch lock 11.

  In the present invention, the latch lock 11 as described above is used in place of the conventional rod-type locking device, which eliminates the rod-type locking device that protrudes greatly on the surface of the slide door 5 and improves the design. It is for aiming at. Furthermore, it is also for weight reduction.

<Configuration of open / close drive unit>
FIG. 8 is a front view showing an opening / closing drive part of the automatic opening / closing door for a cargo vehicle of the first embodiment. FIG. 9 is an explanatory plan view for explaining the open / close state of the automatic opening / closing door for a cargo vehicle according to the first embodiment, in which (a) shows a state in which the deployment door is closed, (b) shows a state in which the slide door is closed, and (c). Is a state in which the opening is closed by the deployment door and the slide door.
An opening / closing drive unit 6 having an operating element 6 c for sliding the sliding door 5 is attached to the opening 3 of the luggage compartment 2. The opening / closing drive unit 6 according to the first embodiment includes a rack 17 and a pinion 19. The rack 17 slides between the rack rails 6d, and the rack 17 functions as the operating element 6c.
The pinion 19 is driven by, for example, a drive motor 18. The pinion 19 is driven via a speed reducer connected to the rotation shaft of the drive motor 18.

  At one end of the rack 17 of the opening / closing drive unit 6, the operating element side engaging portion 6a is attached by a bolt 17a or the like, and an engaging hole 6b is formed in this. The engaging hole 6b is detachably engaged with a pin serving as a sliding door side engaging portion 5a attached to the sliding door 5. The operating element side engaging portion 6a is attached so that the rack rail 6d is sandwiched between a plurality of rollers 6e, and the lower side of the operating element side engaging portion 6a is protected by a reinforcing rail 6f. As described above, the operating element side engaging portion 6a is slidably attached between the rack rail 6d and the reinforcing rail 6f. The operating element side engaging portion 6 a can be simultaneously slid by sliding the rack 17 with the pinion 19.

  When the deployment door 4 together with the slide door 5 is closed in the opening 3, the pin of the slide door side engagement portion 5a is detachably engaged with the engagement hole 6b of the operating portion side engagement portion 6a. Become. As a basic mode, the slide door 5 is deployed only in parallel with the deployment door 4. Therefore, when the sliding door 5 and the deployment door 4 are closed in the opening 3 in parallel, the position of the pin (sliding door side engaging portion 5a) and the engaging hole 6b of the operating member side engaging portion 6a are closed. It is necessary to facilitate engagement at an appropriate position. A magnet (not shown) or the like is provided on the edge of the slide door 5 and the edge of the step 4a of the deployment door 4 so that the slide door 5 is completely accommodated in the step 4a of the deployment door 4 and can easily maintain the state. It is desirable to make the structure adsorbed by the When the opening / closing drive unit 6 closes the opening 3 with the slide door 5, the magnet attracting force is preferably weak so as not to inhibit the sliding movement when the opening is closed.

  The sliding door 5 can be opened and closed by the sliding movement of the operating element 6c (rack 17) of the opening / closing drive unit 6. As shown in FIGS. 1 and 2, when the slide door 5 is opened and closed, the slide door 5 can be opened at the opening 3 and can be closed without a gap.

<Operating state of unfolding door and sliding door>
The operating element side engaging portion 6 a is a member located at one end of the rack 17 of the opening / closing drive portion 6 attached around the opening 3, so that it moves in the left-right direction above the opening 3. ing. On the other hand, since the sliding door side engaging portion 5 a is attached to the sliding door 5, it moves according to the movement of the deployment door 4. When the deployment door 4 is deployed as shown in FIG. 9 (a), the slide door 5 is also deployed, so the pin of the slide door side engagement portion 5a is engaged with the operator side engagement portion 6a. It is not engaged with the joint hole 6b.

  When the deployment door 4 is closed to the opening 3 as shown in FIG. 9B, the slide door 5 is also in parallel with the deployment door 4, so the pin of the slide door side engagement portion 5a is on the operating side. Engage with the engaging hole 6b of the engaging portion 6a. Therefore, as shown in FIG. 9C, as the pinion 19 driven by the drive motor 18 rotates (see FIG. 8), the rack 17 (actuator 6c) meshing with the pinion 19 can be slid. it can. That is, when the rack 17 (actuator 6c) is linearly reciprocated, the operating element side engaging portion 6a can slide the slide door 5 according to the operation of the rack 17 to open and close the slide door 5 ( (See FIGS. 1 and 2).

<Configuration of the operating element side engaging portion and the sliding door side engaging portion>
FIG. 10 shows a state where the sliding door side engaging portion is engaged with the operating member side engaging portion, (a) is an enlarged side view before engaging, and (b) is an enlarged state of engagement between the pinion and the rack. Sectional drawing (c) is an enlarged side view of the engaged state.
The pin of the sliding door side engaging portion 5a is a member that is attached to the upper side of the sliding door 5 toward the luggage compartment 2 side.
On the other hand, the operating element side engaging portion 6a is a member that is attached to one end of the rack 17 with a bolt 17a, and is a member that is formed with an engaging hole 6b in which the pin 5a of the slide door 5 is detachably engaged. In the example shown in the drawing, the cross section is made of a substantially U-shaped member facing upward, one end of which is attached to the rack 17 and the other end is provided with an engagement hole 6b.
It is also possible to form an engagement hole 6b in the sliding door side engaging portion 5a and attach a pin to the operating element side engaging portion 6a. Furthermore, instead of the engagement hole, any shape that can lock the pin may be used, and a substantially V-shaped or substantially U-shaped member may be used.

<Arrangement of the opening / closing drive part above the opening>
In the automatic opening / closing door for a freight vehicle according to the first embodiment, the pinion 19 and the rack 17 of the opening / closing drive unit 6 (drive motor 18) have a simple configuration, and the opening / closing drive unit 6 (pinion 19) of the motor or the like is, for example, an opening. 3, the opening / closing drive mechanism that protrudes toward the luggage compartment 2 side from the unfolding door 4 as in the prior art is eliminated, and the interior space of the luggage compartment 2 can be widely used.

  Further, since the deployment door 4 does not have to have a bag-like configuration in which the slide door 5 enters and exits as in the prior art, the plate thickness of the deployment door 4 and the slide door 5 is reduced compared to the conventional configuration. Therefore, the interior space of the luggage compartment 2 can be made wider.

<Description of emergency operation>
On the other hand, when the drive motor 18 becomes inoperable for some reason, the drive mechanism of the slide door 5 is a linear motion by the pinion 19 and the operation element 6c (rack 17), and even from the driven side (slide door 5). Since it becomes operable, the slide door 5 can be manually opened and closed. Therefore, the slide door 5 can be urgently released regardless of the position at which the slide door 5 cannot be opened and closed.

<Variation 1 of the opening / closing drive unit>
The opening / closing drive unit 6 of the present invention slides the operating element 6c (rack 17) and engages the operating element side engaging section 6a attached to the operating element 6c with the sliding door side engagement attached to the slide door 5. Any configuration may be employed as long as the portion 5a is detachably engaged and the sliding door 5 is slid as necessary. The operating element 6c and the opening / closing drive unit 6 are not limited to the configuration including the rack 17 and the pinion 19 as described above.
Although not shown, the opening / closing drive unit of the modification 1 is made up of a chain and a sprocket instead of the rack 17 and the pinion 19. For example, a chain that functions as the operating element 6c and a sprocket that rotates the chain may be used. By attaching the operating element side engaging portion 6a to the chain and rotating the sprocket with a motor or the like, the operating element side engaging portion 6a can be slid to open and close the slide door 5.

<Modification 2 of the opening / closing drive unit>
Although not shown, the opening / closing drive unit of the second modification is configured by a belt and a pulley instead of the rack 17 and the pinion 19. For example, a belt that functions as the operating element 6c and a pulley that rotates the belt may be used. By attaching the operating element side engaging portion 6a to this belt and rotating the pulley with a motor or the like, the operating element side engaging portion 6a can be slid to open and close the slide door 5.

<Modification 3 of the opening / closing drive unit>
Although not shown, the opening / closing drive unit of the third modification is configured by a hydraulic device in place of the rack 17 and the pinion 19. For example, it may be composed of a piston of a hydraulic device that functions as the operating element 6c and a cylinder that reciprocates the piston. The operating element side engaging portion 6a is attached to this piston, the piston is reciprocated, the operating element side engaging portion 6a can be slid, and the slide door 5 can be opened and closed.
As described above, the opening / closing drive unit is configured to be slidable and is not limited to these configurations as long as it can be manually operated from the driven side (slide door 5) as necessary. .

  The present invention is not limited to the embodiment of the invention described above, and the main part of the opening / closing structure of the sliding door 5 is provided at the upper part on the luggage compartment 2 side, so that the deployment door 4 can be made compact, and the luggage compartment If the emergency release of the sliding door 5 that is inoperable in an emergency can be easily and reliably released when the emergency release can be performed easily and reliably, the configuration in the present invention is not limited. Of course, various changes can be made without departing from the scope of the invention.

  The door for a cargo vehicle of the present invention can be used not only for a cargo vehicle but also as an open / close structure for other refrigeration vehicles, warm storage vehicles or passenger vehicles.

DESCRIPTION OF SYMBOLS 1 Cargo vehicle 2 Luggage room 3 Opening part 4 Unfolding door 5 Sliding door 5a Sliding door side engaging part 6 Opening / closing drive part 6a Actuator side engaging part 6b Engaging hole 6c Actuator 7 Hinge 17 Rack 19 Pinion

Claims (9)

A freight vehicle automatic opening / closing door attached to the opening (3) of the luggage compartment (2) of the freight vehicle (1),
A deployment door (4) attached to one side edge of the opening (3) so as to open in a horizontal direction with the side edge as a rotation center;
A sliding door (5) attached to the unfolding door (4) so as to slide open and close;
An opening / closing drive unit (6) having an operating element (6c) attached to the opening (3) of the luggage compartment (2) and slidingly moving the slide door (5);
An operating element side engaging portion (6a) attached to the operating element (6c);
A sliding door side engaging portion (5a) attached to the sliding door (5) and detachably engaged with the operating element side engaging portion (6a),
When the unfolding door (4) together with the sliding door (5) is closed to the opening (3), the sliding door side engaging portion (5a) is attached to and detached from the operating element side engaging portion (6a). Will be able to engage freely,
The sliding door (5) is opened or closed at the opening (3) by the sliding movement operation of the operating element (6c) of the opening / closing drive unit (6),
When the opening / closing drive unit (6) is in an inoperable state, the sliding door (5) is manually moved to linearly move the operating element (6c), and the sliding door (5) An automatic opening / closing door for a freight vehicle, characterized in that it can be opened and closed manually.   The automatic opening / closing door for a freight vehicle according to claim 1, wherein the unfolding door (4) comprises a single plate.   The open / close drive unit (6) includes a rack (17) that functions as the operating element (6c), and a pinion (19) that engages and slides on the rack (17). Item 1. An automatic door for freight vehicles according to item 1 or 2.   The automatic opening / closing door for a cargo vehicle according to claim 1 or 2, wherein the opening / closing drive section (6) has a chain functioning as the operating element (6c) and a sprocket for rotating the chain.   The automatic opening / closing door for a cargo vehicle according to claim 1 or 2, wherein the opening / closing drive section (6) includes a belt functioning as the operating element (6c) and a pulley for rotating the belt.   The automatic opening / closing door for a cargo vehicle according to claim 1 or 2, wherein the opening / closing drive section (6) has a piston functioning as the operating element (6c) and a cylinder for reciprocating the piston. The operating element side engaging portion (6a) has an engaging hole (6b), and the sliding door side engaging portion (5a) comprises a pin,
When the unfolding door (4) together with the sliding door (5) is closed to the opening (3), the sliding door side is inserted into the engaging hole (6b) of the operating element side engaging portion (6a). The automatic opening / closing door for a cargo vehicle according to claim 1, 2, 3, 4, 5 or 6, characterized in that the pin of the engaging portion (5a) is latched.   8. The automatic opening / closing door for a cargo vehicle according to claim 1, wherein the opening / closing drive portion (6) is attached to an upper portion of the opening portion (3).   The said opening / closing drive part (6) makes a receiving part attached to the opening part (3) of a luggage compartment (2) receive the signal from a remote control switch, and is operated remotely, The 1, 2 characterized by the above-mentioned. Automatic door for 3, 4, 5, 6, 7 or 8 freight vehicles.