JPH045674Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a roll-up and storage type door, particularly a roll-up and storage type door on the side of a truck bed of a freight vehicle.

[Prior Art] Conventionally, roll-up and retractable doors have poor airtightness compared to retractable doors, so various improvements have been made to prevent rain and dust from entering. This was a particularly urgent issue for doors located in places exposed to strong wind and rain, such as the loading platform of a freight vehicle. First, in order to prevent the sheet or the like that forms the door from bending, core members were attached along both ends of the door. Furthermore. The members attached to both ends were sandwiched between the guide rails of the guide plate and held tightly together to prevent rain and dust from entering.

However, the first problem is that the part containing the core becomes bulky when rolled up and stored.
In order to provide flexibility in opening and closing the door, there is a limit to the degree of closeness between the mounting member and the guide rule, and in areas that are exposed to particularly strong wind and rain, it is difficult to withstand the intrusion of rain and dust to a certain extent. , other measures had to be taken.

[Problems to be solved by the invention] The present invention provides a roll-up and storage door that eliminates the above-mentioned conventional disadvantages, eliminates the bulk of the core portion when it is rolled up and stored, and improves the airtightness of the door. I will provide a.

[Means for Solving the Problem] As a means for solving this problem, the roll-up storage type door of the present invention is a door that can be stored by being rolled up, and has a door along both ends. a winding shaft having a step approximately equal to the height of the convex shape in the radial direction between a portion where the convex shape is wound and a portion where the convex shape is not wound; The door has a guide plate having a convex shape along the distal end that has a slope substantially equal to the slope of the door widening and engages with the convex shapes at both ends of the door when closed, and covers at least both ends of the door.

[Function] In this configuration, during winding, the convex shapes at both ends of the door are lined up in order with the short radius portion of the shaft, and the winding is performed. On the other hand, when closed, the convex shapes at both ends of the door and the convex shape of the guide plate engage and come into close contact.

[Example] Hereinafter, an example in which the present invention is used as a door on the side of a truck bed will be described with reference to the drawings.

FIG. 1 is a perspective view of the loading platform of a truck;
The loading platform 1 is sealed by a front wall 2, a rear wall 3, a ceiling 4, a support column 5, a loading platform fan 7 that opens and closes around a hinge 6, an outer guide plate 8, an inner guide plate 10, and a seat 9, so that it cannot be accessed from the outside. prevents rain and dust from entering.

2 is a front elevational view of the loading platform side door of this embodiment, FIG. 3 is a side elevational view of the loading platform side door of this embodiment, and FIGS. 4a and 4b are explanatory views of the engagement of the seat and the guide plate. The operation of the roll-up and storage door of this embodiment will be explained based on FIGS. 2 to 4.

The right side of FIG. 2 shows the state of the sheet 9 when it is rolled up and stored. The sheet 9 has a trapezoidal shape that widens towards the end with soft members (convex shapes of the sheet) 21 attached to the inner surfaces of both ends, and the pipe around which the sheet 9 is wound is the main pipe 24 in the center and the part where the soft members 21 on both sides are wound. It is made up of a sub-pipe 25, and the radius of this main pipe 24 is longer than the radius of the sub-pipe 25 by the height of the soft member 21. The pipes 24 and 25 are driven by a motor 23 via a chain 22. Also, the inclination of both ends of the sheet 9 changes as the sheet 9 is wound up.
Since both ends of the soft members 21 are inclined to move outward by the width of the soft members 21 in one rotation, the soft members 21 are arranged in an orderly manner in the sub-pipe 25 without overlapping even when the sheet 9 is wound up. Therefore, the soft members 21 do not overlap and become bulky when stored, and the soft members 2
Part 1 does not come out.

Next, when closing the seat 9, the hook 30 attached to the tip of the seat 9 is inserted into the chain 22 as shown in FIG. 9
appears below. When the lower end of the seat 9 descends until it comes into pressure contact with the upper end of the platform fan 7, the inclination of the convex portions 21 at both ends of the sheet 9 and the convex portions 40 of the inner guide plate 10 are approximately equal, so that the upper portion of the sheet 9 is as shown in Figure 4a, and the lower part of the sheet 9 is as shown in Figure 4b,
Since the soft member 21 and the convex portion 40 of the inner guide plate 10 are engaged in a press-contact state, the degree of adhesion between the sheet 9 and the inner guide plate 10 is high, and the intrusion of rain and dust can be prevented.

Fig. 5 shows the start of the motor 23, the stop when the seat reaches the upper or lower end, and when closing the motor 23.
This is an example of a circuit for controlling the operation of the seat when it is opened. Here switch 50, switch 51
Both are normally closed switches. or,
Switch 52 to specify UP, DOWN, LATCH
is a 3-stage switch, when the upper side is UP,
The lower side is for DOWN, and the neutral is for LATCH. Also, the solenoid 53 is the brake 5 of the motor.
Used to remove 5. Resistors 54a, 54b
DC power is supplied through the Next, its operation will be explained.

When the seat 9 is lowered to the lower end and closed, the switch 50 is closed and the switch 51 is closed as shown in FIG.
is open. Further, the shaft of the motor 23 is braked by a brake 55. switch 5
3 is in the UP state, voltage is applied to the solenoid 53 by 52a, and the brake 55 is released.
52b and 52c cause current to flow through the motor 23 in the X direction, and the rotation of the motor 23 raises the seat 9. At this point, the switch 51 is closed. When the seat 9 reaches its upper end, the switch 50 opens and the motor 23 stops rotating. If the switch 52 is set to the neutral LATCH at this point, the solenoid 53 will no longer operate, and the brake 55 will apply a brake to the shaft of the motor 23.

If sheet 9 is open with the top edge raised,
Since the switch 50 is open and the switch 51 is closed, if the switch 52 is turned DOWN at this point, the solenoid 53 will be turned on, the brake 55 will be released, a current will flow in the Y direction to the motor 23, and the seat will be seated. 9 goes downwards. At this point, switch 50 is closed. When you get to the bottom, switch 5
1 is opened, the motor 23 stops, and switch 5 is opened.
When 2 is set to LATCH, the solenoid 53 is disengaged and the shaft of the motor 23 is braked by the brake 55.

In this embodiment, the seat is opened and closed by a motor, and the latch is performed by a solenoid, but other sources such as engine power may be used, or the latch may be mechanically latched. It's okay if it's something. Furthermore, although this embodiment has been described using the loading platform of a truck as an example, it can also be used as a door for storage by rolling up, for example in a building shutter.

[Effects of the Invention] As described above, according to the present invention, it is possible to provide a roll-up and storage type door that eliminates the bulk of the core portion due to roll-up and storage, and improves the airtightness of the door.

[Brief explanation of drawings]

Fig. 1 is a perspective view of the loading platform of the truck of this embodiment, Fig. 2 is a front elevational view of the loading platform side door of this embodiment, Fig. 3 is a side elevational view of the loading platform side door of this embodiment, and Fig. 4 5A and 5B are explanatory views of the engagement between the seat and the guide plate, and FIG. 5 is an operation control circuit diagram of the door on the side of the loading platform of this embodiment. In the figure, 8... Outer guide plate, 9... Seat, 10
... Inner guide plate, 21 ... Soft member (convex shape of sheet), 22 ... Chain, 23 ... Motor, 24
...Main pipe, 25...Sub pipe, 30...
...Hook, 40...Convex shape of inner guide plate, 55...
It's the brakes.

Claims (1)

[Claims for Utility Model Registration] (1) A door that can be stored by being rolled up, comprising a widening door that has a convex shape along both ends, and a portion where the convex shape is rolled up and not rolled up. a winding shaft having a step approximately equal to the height of the convex portion in the radial direction; and a winding shaft having a step approximately equal to the height of the convex portion in the radial direction; 1. A roll-up storage type door comprising a guide plate having a convex shape along a tip end thereof and covering at least both ends of the door. (2) The roll-up and retractable door according to claim 1, wherein the door is opened and closed automatically by a controlled motor. (3) The winder according to claim 2 of the utility model registration, characterized in that the door is closed by engaging hooks attached to both ends of the end of the door with a chain connecting the motor and the winding shaft. A retractable door. (4) The roll-up storage type door according to claim 1, wherein at least one of the convex shape of the door and the convex shape of the guide plate is a soft member. (5) The convex shape of the door is attached to the inner surface of the door, and the door winding shaft consists of a main pipe and a sub-pipe having a radius step approximately equal to the height of the door. The roll-up and storage door described in Scope 1. (6) The roll-up storage type door according to claim 1 of the utility model registration claim, wherein the door is a sheet. (7) The roll-up type door according to claim 1 of the utility model registration claim, wherein the door is a side door of a freight vehicle.