JP3484884B2 - Automatic sliding door opening and closing device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slide door automatic opening / closing device.

[0002]

2. Description of the Related Art As shown in FIG. 1, a sliding door of a vehicle includes an upper rail 4, a lower rail 5, and a center rail 45 which are provided at the upper edge of the vehicle body 2, the lower edge of the vehicle body, and the upper and lower centers of the rear side wall of the vehicle body. , The upper roller, the lower roller and the center roller provided at the front end upper part B, the front end lower part C and the rear end center D of the slide door 1 are engaged with each other so that they are opened and closed by being guided by the rails 4, 5, 45. Has become. The front ends of the rails 4, 5, 45 are curved inward so that the slide door 1 can be pulled toward the vehicle body 2 when the door is closed.

As shown in FIG. 5, the lower roller is provided with a roller supporting member 8 rotatably in the horizontal direction at the tip of a supporting arm 12 provided at the lower front end of the slide door 1.
The roller supporting member 8 is provided with two horizontal rollers 70 and one traveling roller 11 that receives a vertical load of the slide door 1, and the lower rail 5 is curved at the front end of the lower rail 5. The two roller rollers 70 engaged with each other rotate the roller support member 8 in the horizontal direction so that the direction of the traveling roller 11 coincides with the traveling direction of the slide door 1.

Further, in order to automatically open and close the slide door 1, as shown in FIG.
Drive pulley 27 driven by 1 and driven pulley 2
3, 24 and idle pulleys 25, 26 are provided, an endless traction member 30 is hung around these pulleys, and a traction bracket 36a provided for supporting the slide door 1 is fixed to the endless traction member 30.

[0005]

However, in the above automatic sliding door opening / closing device, as shown by the chain double-dashed line on the left side of FIG. 5, the sliding door 1 moves in parallel and opens and closes. Since the endless traction member 30 is bent, the durability thereof may be reduced. In order to prevent this, it is conceivable that the fastening portion of the traction bracket 36a with the endless traction member 30 can be rotated in the horizontal direction, but in this case not only the configuration becomes complicated but also the number of parts is large and the cost is high. There was a drawback that became high. In view of the above, it is an object of the present invention to provide a slide door automatic opening / closing device capable of preventing the durability of the endless traction member from decreasing with a simple configuration.

[0006]

According to a first aspect of the present invention, there is provided a slide door automatic opening / closing device according to the present invention. The front end of the slide door automatic opening / closing device is arranged at the lower edge of the opening of the vehicle body and is curved inward. Guide rails and supports fixed to the lower front end of the door
And arms, horizontally turnably to the distal end of the support arm
Pivoted the roller support members, and by two horizontal rollers supported on the roller supporting member, the sliding door front end lower portion of the door is guided in a predetermined movement trajectory along the horizontal direction, the lower portion of the vehicle body A driving pulley driven by an electric motor and a driven pulley are provided, and an endless traction member is hung between these pulleys, and the roller supporting member is integrally formed with the roller supporting member at the curved portion at the front end of the guide rail. A bracket is rotatably provided, and the endless traction member is fixed to the bracket.

According to a second aspect of the present invention, there is provided a slide door automatic opening / closing device in which the guide rail, each pulley, the endless traction member, and the electric motor having the configuration according to the first aspect are provided on a lower surface of a step panel. It is characterized by being modularized and incorporated into.

[0008]

According to the automatic sliding door opening / closing device of the first aspect, the sliding door automatic opening / closing device is provided at the lower edge of the opening of the vehicle body.
Guide rails with inwardly curved edges and under the front end of the door
A fixed support arm and a horizontal direction at the tip of the support arm
And a roller support member pivotally attached to the roller support member
By the two horizontal rollers supported by the holding member, the front of the door
The lower end is guided along a predetermined movement trajectory along the horizontal direction.
It Since the bracket is fixed to the roller support member that supports the horizontal roller, the bracket rotates integrally with the roller support member at the curved portion at the front end of the guide rail. Therefore, it is possible to prevent deterioration of the durability of the endless traction member with a simple structure without applying an unreasonable force to the fastening portion of the endless traction member with the bracket.

According to the slide door automatic opening / closing device of the second aspect, the guide rail, each pulley, the endless traction member and the electric motor are modularized and incorporated into the lower surface of the step panel, so that the assembling work to the body is efficient. Good and quick. Further, since the guide rail, each pulley, the endless traction member, and the electric motor are arranged at the same height as the guide roller, the height of the boarding / alighting step does not increase and the boarding / alighting property does not deteriorate.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described with reference to the accompanying drawings. 1 is a schematic perspective view showing an arrangement position of the slide door automatic opening / closing device 21, FIG. 2 is a sectional view taken along the line AA in FIG. 1, and FIG. 3 is a slide door automatic opening / closing device 21.
FIG. 4 is a plan view showing the schematic configuration of FIG. 4, and FIG. 4 is an enlarged plan view of a portion of the roller supporting member 8. The slide door 1 includes an upper rail 4, a lower rail 5 and a center rail 45, which are respectively arranged at upper and lower edges of an opening 3 formed in a vehicle body 2 and at a vertical center of a rear side wall of the vehicle body 2, a front end upper portion B of the slide door 1, The upper roller 6 and the center roller (not shown), which are respectively arranged at the lower end C of the front end and the center D of the rear end, engage with each other,
The rails 4, 5 and 45 are guided to slide along the vehicle body 2.

In the lower roller 7, a horizontal roller 70 is pivotally supported on left and right vertical shafts 9 provided on a roller support member 8, and a traveling roller 11 is pivotally supported on a horizontal shaft 10 provided between the vertical shafts 9 of the roller support member 8. The roller support member 8 is attached to the support arm 12
The vertical shaft 13 is rotatably and pivotally mounted.
The support arm 12 is attached to an L-shaped bracket 14 fixed to the slide door 1. The upper roller 6 is
A horizontal roller 60 is axially supported by the support arm 12a. The center roller (not shown) is configured such that, like the lower roller 7, two horizontal rollers and one traveling roller are attached to a roller support member rotatably provided on the support arm.

The automatic opening / closing device 21 for the sliding door 1 is a modular installation of various parts such as pulleys and functional parts such as an electric motor on the lower surface of the step panel 22 for getting in and out of the opening 3. Driven pulleys 23, 24 are arranged at both ends of the step panel 22, and idle pulleys 25, 26 are arranged in the middle. A drive pulley 27 is arranged approximately in the middle of the driven pulley 23 and the idle pulley 26. The drive pulley 27 is formed by integrally forming a large-diameter toothed pulley 28 and a small-diameter toothed pulley 29. The driven pulleys 23 and 24 and the idle pulleys 25 and 26
An endless toothed belt 30 is hung on the toothed pulley 28.

The electric motor 31 is integrated with the electromagnetic clutch 32 and is fixed to the lower surface of the step panel 22. Then, the pulley 3 with transmission teeth of the electromagnetic clutch 32
3 and a small-diameter toothed pulley 29 of the drive pulley 27 are wound with an endless toothed belt 34. Electromagnetic clutch 3
The rotational driving force of the electric motor 31 is transmitted in order of the transmission toothed pulley 33, the endless toothed belt 34, the toothed pulley 29 (the toothed pulley 28), and the endless toothed belt 30 via the drive motor 2. The lower guide rail 5 is fixed to the step panel 22 along a belt guide 35 disposed between the driven pulleys 23 and 24. A traction bracket 36 is connected to the endless toothed belt 30 located between the driven pulleys 23 and 24.

As described above, the sliding door automatic opening / closing device 21 in which various parts, functional parts and the like are modularized and installed on the lower surface of the step panel 22 is the vehicle body 2 at the opening 3.
It is disposed on the step under 37 integrally formed on the side. Then, the pulling bracket 36 is connected and fixed to the upper surface of the roller supporting member 8 attached to the slide door 1, and the traveling roller 11 of the roller supporting member 8 is caused to travel on the upper surface of the step under 37.

The slide door automatic opening / closing device 21 having the above structure
According to this, when the electric motor 31 is rotationally driven by the opening / closing operation, the endless toothed belt 30 moves between the driven pulleys 23 and 24. The endless toothed belt 30 includes a traction bracket 3
Since 6 is connected, the slide door 1 can be pulled to open and close the opening 3 of the vehicle body 2. Since the pulling bracket 36 is connected and fixed to the roller supporting member 8 of the lower roller 7, it rotates integrally with the roller supporting member 8 at the curved portion at the front end of the lower rail 5. Therefore, an unreasonable force does not act on the fastening portion of the endless toothed belt 30 with the traction bracket 36, and the endless toothed belt 3 has a simple structure.
A decrease in durability of 0 can be prevented.

Further, the slide door automatic opening / closing device 21
Is a lower rail 5, each pulley 23 to 26, a toothed pulley 2
8, 29, endless toothed belts 30, 34, electric motor 31
Is modularized and incorporated into the lower surface of the flat step panel 22, and is disposed on the step under 37 integrally formed on the vehicle body 2 side of the opening 3.
Therefore, the assembling work to the vehicle body 2 can be performed efficiently and quickly. Further, since the lower rail 5, the pulleys 23 to 26, the toothed pulleys 28 and 29, the endless toothed belts 30 and 34, and the electric motor 31 are arranged at the same height as the lower roller 7,
The height of the boarding / alighting step does not increase and the boarding / alighting property does not deteriorate. An endless toothed belt 3 that pulls the sliding door 1
Instead of 0, an endless pulling wire may be used.

[Brief description of drawings]

FIG. 1 is a schematic perspective view showing an arrangement position of a slide door automatic opening / closing device 21 according to the present invention.

FIG. 2 is a sectional view taken along line AA in FIG.

FIG. 3 is a plan view showing a schematic configuration of a slide door automatic opening / closing device 21.

FIG. 4 is an enlarged plan view of a portion of a roller support member 8.

FIG. 5 is a plan view showing a schematic configuration of a conventional slide door automatic opening / closing device 21.

[Explanation of symbols]

1 ... sliding door 4. Upper rail 5 ... Lower rail 8 ... Roller support member 21 ... Automatic door opening / closing device 22 ... Step panel 23, 24 ... driven pulley 27 ... Drive pulley 28 ... Toothed pulley 30 ... Belt with endless teeth 31 ... Electric motor 36 ... Tow bracket 37 ... Step Under

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Claims (2)

(57) [Claims] 1. A guide rail, which is provided at a lower edge of an opening of a vehicle body, and whose front end is curved inward, and is fixed to a lower portion of a front end of a door .
The support arm and the tip of the support arm can be rotated horizontally.
Roller support member which is pivotally connected to the capacity, and the two horizontal rollers supported on the roller supporting member, the sliding door is guided at a predetermined moving locus front end lower portion of the door along the <br/> horizontally A drive pulley driven by an electric motor and a driven pulley are provided in a lower portion of the vehicle body, and an endless traction member is hung between the pulleys, and the roller support member is provided with a curved portion at a front end of the guide rail. A slide door automatic opening / closing device, wherein a bracket is provided so as to be rotatable integrally with a roller support member, and the endless traction member is fixedly attached to the bracket. 2. The guide rail, each pulley, the endless traction member, and the electric motor are modularized and incorporated in a lower surface of a step panel.
The automatic opening / closing device for the sliding door described in.