JPH0716502Y2 - One box car automatic rear shutter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to an automatic rear shutter for a one-box car having a roof with a camber.

[Conventional technology]

For example, the cross-section of the luggage compartment of a luggage delivery vehicle as shown in the side view and plan view of FIG. 8 has a large camber roof as shown in FIG. 9 (A), and FIG. , The former can be roughly divided into those with a substantially flat roof, the former can utilize the rigidity of the camber to make a low-cost lightweight structure without a transverse beam, and the latter requires reinforcement by a transverse beam, It is characterized in that it can make the vehicle interior space larger than the former.

Regardless of the type, in the one-box car, the rear end opening of the car body can be opened and closed for loading and unloading luggage, and sliding doors used for this are sliding doors, hinged doors, shutters, etc. However, the present invention relates to a one-box car whose rear end opening is closed by a shutter.

By the way, in the case of the type that opens and closes the rear end opening with a shutter, the shutter is a pair of left and right laid vertically in the upper part on both sides of the luggage compartment when fully opened, as shown by the chain line in FIG. 9 (A). It will be stored forward along the vertical rail,
When fully loaded, the storage shutter serves as the ceiling, so when loading and unloading luggage, workers must bend down to avoid touching their heads, and the height of the roof itself Despite being sufficiently high, there is a problem that the loading capacity of the luggage will be slightly smaller due to the storage shutter, and furthermore, in this type of luggage carrier, due to the delivery of a large amount of small luggage, it frequently stops and Since the shutter must be opened and closed each time, the shutter can be opened and closed automatically to reduce driver fatigue.
It is very important to take safety measures for storage so as not to start with the shutter open.

[Problems to be solved by the device]

The present invention has been proposed in view of such circumstances, and provides a safe automatic rear shutter for a one-box car in which the shutter opening and closing work is labor-saving, and the shutter is always fully closed before starting. The purpose is to

[Means for Solving the Problems]

To this end, the present invention provides a horizontal portion of a one-box car having a roof with a camber and a rear end opening of the luggage compartment along the upper ends of both parallel side walls of the luggage compartment, each of which extends forward, and the rear portion of the horizontal portion. In the one-box car that is opened and closed by a shutter that moves along a pair of left and right rails that are smoothly continuous to the end with a 1/4 circular arc and that extends vertically downward along the rear end opening, Extending along the left and right ends of the shutter, the front and rear ends thereof being fixed to the front and rear ends of the shutter, respectively, and the middle portion is wound around a pair of left and right chain drive sprockets coaxially supported by the left and right upper ends of the rear end opening. And a motor for driving the drive sprocket in the forward and reverse directions,
And a switch attached to the driver's cab or the rear end opening for opening and closing the shutter.

[Action]

Since the shutter is automatically opened / closed by a switch or a keyless entry, the opening / closing work of the shutter is automated.

Also, if the shutter is not fully closed, an alarm will be activated when the vehicle starts, and when the vehicle is fully closed, the interlock of the transmission can be released and the vehicle can start, so there is no fear of starting with the shutter open.

〔Example〕

An embodiment of the present invention will now be described with reference to the drawings. FIG. 1 is an overall side view thereof, FIG. 2 is a rear view of FIG. 1, and FIG. 3 is a cross-sectional view of the shutter taken along line III-III of FIG. Fig. And its roller shaft cross-sectional view, Fig. 4 is a partially enlarged cross-sectional view showing the IV portion of Fig. 1, Fig. 5 is a perspective view showing the chain of Fig. 1, and Fig. 6 is a chain drive portion of Fig. 4. FIG. 7 is a front view of FIG.

First, in FIGS. 1 and 2, reference numeral 1 is a one-box car having a cambered roof whose interior is partitioned by a partition door into a front cab 2 and a rear luggage compartment 3.
A rectangular rear end opening 4 for loading and unloading luggage is provided at the rear end of the luggage compartment 3. 5 extends forward along the upper ends of the parallel side plates on both sides of the luggage compartment 3 in the vertical direction over a length substantially equal to the entire length of the shutter, and a rear end opening 4
As shown in FIG. 4, the rail 5 has a pair of left and right rails that extend vertically downward along both sides of the rail, and has a substantially C-shaped cross section in which vertical grooves are provided in the portions having the same cross section. The corner of the horizontal part and the vertical part has an appropriate radius.
Smoothly connected at 1/4 arc.

Reference numeral 6 denotes a plurality of horizontally elongated strip-shaped unit shutter plates (hereinafter referred to as shutter plates), and rectangular flexible shutters 7 whose long sides are pivotally attached to each other by hinges to close the rear end opening 4 as a whole. As shown in FIG. 3, bearings 9 are fixed to the lower surfaces of both ends of the shutter plate 6 via crank-type spacers 8, and the outer ends of the roller shaft 10 whose inner ends are axially supported by the bearings 9. The roller 11 fitted onto the rail 5 is loosely inserted into the rail 5. It should be noted that the shutter plate 6 is appropriately provided with a window for taking light.

As shown in FIGS. 1 and 4, reference numeral 12 extends along the left and right ends of the shutter, and its front and rear ends are pivoted to the front and rear ends of the shutter 7 via brackets 13 and 14, respectively, as shown in FIG. In the worn chain, the chain 12 extends along the rail 5 for the entire length of the shutter 7.

Reference numeral 15 denotes a chain drive motor fixed to the left inner surface of the luggage compartment facing the corner of the rail via a bracket as shown in FIGS. 1 and 2, and as shown in FIG. The chain drive sprocket 17 is driven via the worm gear and the cogged belt 16, the chain drive sprocket 17 drives the chain sprocket 19 fitted to the same rotary shaft 18, and the chain sprocket 19 drives the chain 12 as shown in FIG. It is designed to drive.

As shown in FIG. 2, reference numeral 20 denotes a balance spring attached to the right end of the rotary shaft 18, which extends when the shutter 7 is closed by the rotation of the drive motor 15 and contracts when the shutter 7 is opened. It acts to even out the load on the shutter 15 when opening and closing the shutter. twenty one
Is a keyless entry for opening and closing the shutter, which is attached to one side of the rear end opening 4.

With such a structure, the following operational effects can be obtained.

(1) By adopting a shutter,
Unlike double sliding doors, it does not require vertical and horizontal spaces, and the opening does not become narrow unlike single sliding doors, and a large frontage can be opened and closed.

(2) When the shutter is opened, the horizontal portion of the chain is moved by the drive motor through the belt, the chain drive sprocket, and the chain sprocket, as shown in FIG.
Since it moves forward, the shutter moves forward along the rail in conjunction with this, and the rear end opening of the luggage compartment opens wide.

(3) Since the chain drive motor drives the chain via the worm and the worm gear, it is self-locked when stopped, so the shutter does not drop in the middle and is safe. The shutter can be opened and closed manually in case of failure.

(4) At this time, as shown in FIG. 3, the shutter moves forward along the inner surface of the roof center part at a level substantially above the moving surface of the roller shaft by the height of the spacer. Since the height of is higher than that of the roller shaft, the worker can carry in and out the luggage in a natural posture without bending over.

(5) The shutter is closed by rotating the drive motor in the reverse direction. At that time, the energy of the balance spring stretched when the shutter is first opened urges the shutter in the closing direction. Load is equalized.

(6) The opening and closing of the shutter can be performed not only by the operation button in the driver's cab, but also directly or remotely by using the switch keyless entry provided at the rear end opening.

(7) Opening and closing of the shutter is always detected by the limit switch attached to the rear end opening, and when the shutter is not fully closed, an alarm is activated and the vehicle cannot start due to the transmission interlock. Therefore, it is safe because the shutter does not start with the shutter open.

[Effects of the Invention] In short, according to the present invention, the rear end opening of the luggage compartment of a one-box car having a roof with a camber is provided along the upper ends of the parallel side walls of the luggage compartment with horizontal portions extending forward. , One that is opened and closed by a shutter that moves along a pair of left and right rails consisting of a vertical part that smoothly continues to the rear end of the horizontal part with a 1/4 arc and extends downward along the rear end opening In a box car, a pair of left and right chain drives that extend along the left and right ends of the shutter, the front and rear ends are fixed to the front and rear ends of the shutter, and the middle part is coaxially supported by the left and right upper ends of the rear end opening. A chain that is wound around the sprocket, a motor that drives the drive sprocket in the forward and reverse directions, and the shutter that is attached to the cab or the rear end opening. By providing a switch that opens and closes, the opening and closing work of the shutter can be performed labor-savingly, and a safe one-box car automatic rear shutter that always starts after fully closing the shutter is obtained. It is extremely useful.

[Brief description of drawings]

FIG. 1 is an overall side view showing a one-box car equipped with an embodiment of the present invention, FIG. 2 is a rear view of FIG. 1, and FIG. 3 is a cross-section of a shutter along III-III of FIG. FIG. 4 is a cross-sectional view of the roller shaft, FIG. 4 is a partially enlarged cross-sectional view showing the IV portion of FIG. 1, FIG. 5 is a perspective view of the chain of FIG. 1, and FIG. 6 is a chain drive of FIG. FIG. 7 is a side view showing a part, and FIG. 7 is a front view of FIG. FIG. 8 is a perspective view showing a known baggage delivery vehicle, and FIG.
It is sectional drawing of the luggage compartment of the figure. 1 ... One-box car, 2 ... Operating room, 3 ... Luggage compartment, 4 ... Rear end opening, 5 ... Rail, 6 ... Shutter plate, 7 ... Shutter, 8 ... Spacer, 9 ...
… Bearing, 10 …… Roller shaft, 11 …… Roller, 12 …… Chain, 13,14 …… Bracket, 15 …… Drive motor, 1
6 …… Cogged belt, 17 …… Chain drive sprocket, 18 …… Rotary shaft, 19 …… Chain sprocket, 20…
… Balance spring, 21 …… Keyless entry.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Shinichi Takebayashi Shinichi Takebayashi 5-3-8 Shiba, Minato-ku, Tokyo Mitsubishi Motors Corporation (72) Hideaki Fukunaga 3 Takada, Toyoura-cho, Naka-ku, Yokohama, Kanagawa Industry Co., Ltd.

Claims (1)

[Scope of utility model registration request] 1. A horizontal portion laid along a top end of both parallel side walls of a luggage compartment of a one-box car having a roof with a camber and extending forward, respectively.
One box that is opened and closed by a shutter that moves along a pair of left and right rails consisting of a vertical part that smoothly continues to the rear end of the horizontal part with a 1/4 arc and extends downward along the rear end opening. In a car, a pair of left and right chain drive sprockets extending along the left and right ends of the shutter, the front and rear ends being fixed to the front and rear ends of the shutter, and the middle part being coaxially supported by the left and right upper ends of the rear end opening. A chain that is wound around the motor, a motor that drives the drive sprocket in the forward and reverse directions, and a switch that is attached to the operator's cab or the rear end opening to open and close the shutter. Box car automatic rear shutter.