JPH0948244A - Motor-driven sliding door opening/closing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To positively transmit the rotatory-driving force of a driving rubber roller to a rail member by forming a plurality of circular recesses of specific dimensions at the end part of the rail member with which the driving rubber roller with specific diameter and rubber hardness comes in contact when a sliding door is in a totally closed or fully opened state. SOLUTION: A plurality of circular recesses 40 of 3-4mm in bore and 0.5mm or more in depth are formed at the pitch of 5mm or less at the end part of a rail member 11 with which a driving rubber roller 28 of 60mm in diameter with a rubber hardness of 80Hs comes in contact when a sliding door is in a totally closed or fully opened state. As a result, at the time of starting to open/close the sliding door, the contact face of the driving rubber roller deformed being pressed by the rail member 11 successively bites into some of the circular recesses 40 so as to be able to positively transmit rotatory-driving force to the rail member 11. Even with moisture adhering to the rail member 11, opening/closing is not impeded. In addition, the wear of the driving rubber roller is reduced, and no plugging is generated even if rubber and foreign matter enter the circular recesses 40.

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art To open and close an electric slide door, a rail member fixed to the slide door side is sandwiched between a driving rubber roller and a sandwiching roller of an opening and closing drive mechanism provided on the vehicle body side, and the driving rubber roller is rotated to rotate the sliding member. The rail member is moved to open and close the slide door.

[0003]

However, in the electric slide door opening / closing device having the above-described structure, when the rail member is wetted by rainwater or the like, or dust is attached, the friction coefficient of the rail surface with respect to the drive rubber roller is lowered, and the slide door is opened. At the start of opening / closing, the driving rubber roller spins and the sliding door cannot be opened / closed. The present invention has been made to solve the above problems, and an electric slide door capable of opening and closing the slide door by reliably transmitting the rotational driving force of the driving rubber roller to the rail member at the start of opening and closing the slide door. An object is to provide a switchgear.

[0004]

An electric slide door opening / closing device of the present invention for achieving the above object is fixed to a slide door side between a driving rubber roller and a nipping roller of an opening / closing drive mechanism provided on a vehicle body side. Hold the rail member
An electric slide door opening / closing device configured to open / close the slide door by moving the rail member by rotation of the drive rubber roller, wherein the drive rubber roller having a diameter of 60 mm and a rubber hardness of 80 Hs when the slide door is fully closed or fully opened. A plurality of circular recesses having a diameter of 3 to 4 mm and a depth of 0.5 mm or more are formed at a pitch of 5 mm or less at the end portion of the rail member that contacts with.

With respect to a driving rubber roller having a diameter of 60 mm and a rubber hardness of 80 Hs, the reason why the diameter of the circular recesses is 3 to 4 mm, the depth is 0.5 mm or more, and the pitch between the recesses is 5 mm or less is as follows. . When the diameter is less than 3 mm, the driving rubber roller is not sufficiently bited, and clogging is likely to occur due to dust or the like. Further, if the diameter is larger than 4 mm, the driving rubber roller is greatly worn and durability is deteriorated. Furthermore, if the depth is less than 5 mm,
The drive rubber roller does not bite sufficiently. If the pitch between the recesses is greater than 5 mm, the number of circular recesses that bite into the contact surface of the driving rubber roller with the rail is reduced, and idling occurs.

[0006]

According to the electric slide door opening / closing device having the above structure, the driving rubber roller having the diameter of 60 mm and the rubber hardness of 80 Hs has the diameter of 3 to 4 mm and the depth of 0.
A plurality of circular recesses of 5 mm or more are formed at the end of the rail member with a pitch of 5 mm or less. Therefore, when the sliding door in the fully closed or fully opened state is started to open and close, the contact surface of the driving rubber roller formed by being deformed by being pressed by the rail member sequentially bites into some of the circular recesses to reliably provide the rotational driving force. It can be transmitted to the rail member, and even if moisture adheres to the rail member, the driving rubber roller does not idle and the sliding door cannot be opened and closed. Further, the driving rubber roller is less worn and the durability is not significantly lowered.
Further, even if foreign matter such as rubber, dust, or sand enters the circular depression, it does not cause clogging.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a perspective view showing an outline of a part of a slide door 1. The slide door 1 is guided by a guide structure (not shown), moves slightly outward from the closed position, slides along the body 2, and opens and closes a side opening of the body 2 of the vehicle. An angled rail member 11 is fixed near the lower edge of the slide door 1.
The opening / closing drive unit 3 for applying a driving force to the rail member 11 is disposed on a fixed frame 12 fixed to the floor surface of the body 2 and has two rotating arms 13 and 14 rotatably connected to each other. Have

FIG. 2 is a sectional view showing the construction of the opening / closing drive unit 3. The drive motor 4 is horizontally arranged above the fixed frame 12. A worm 15 is fixed to the output shaft of the drive motor 4 and meshes with a worm wheel 16 vertically supported by the fixed frame 12. The shaft 17 integrated with the worm wheel 16 is integrated with the input shaft 18 of the electromagnetic clutch 5. Electromagnetic clutch 5
Energizes the coil 19 so that the input shaft 18 and the output shaft 20
And are combined and rotated as a unit and released by shutting off the energization.

The output shaft 20 extends downward and is rotatably supported by the fixed frame 12 via bearings.
The output shaft 20 has a first rotating arm 1 via a bearing.
3 is swingably supported in the horizontal direction. The first rotating arm 13 is made up of a pair of upper and lower plate-shaped members that are joined together by a tubular spacer 21 and a bolt 22 to be integrated.
A large-diameter pulley 23 having a sprocket is fitted and fixed to the output shaft 20 in the first rotating arm 13 and rotates integrally with the output shaft 20. An intermediate shaft 24 is erected and fixed to the tip of the first rotating arm 13. The second rotating arm 14 is supported on the intermediate shaft 24 so as to be swingable in the horizontal direction. An intermediate pulley 25 having a sprocket is rotatably supported on the intermediate shaft 24 via a bearing.

A roller shaft 26 is erected and fixed to the tip of the second rotating arm 14. A roller pulley 27 having a sprocket is rotatably supported on the roller shaft 26 via a bearing. Roller pulley 2
The lower part of 7 has an outer diameter of 6 made of elastic rubber material.
The driving rubber roller 28 having 0 mm and a rubber hardness of 80 Hs is fixed and rotates integrally. An arm 29 extends from the lower end of the second rotating arm 14 and a guide roller bearing 31 is rotatably supported by a shaft 30 standing on the arm 29. The rail member 11 fixed to the slide door 1 is sandwiched between the drive rubber roller 28 and the guide roller bearing 31.

Toothed belts 34 and 35 are wound between the large-diameter pulley 23 and the intermediate pulley 25, and between the intermediate pulley 25 and the roller pulley 27, respectively, and the output shaft 2
The rotation of 0 is transmitted to the roller pulley 27.
A release lever pin 36 is erected and fixed on the upper end of the tip of the second rotating arm 14. The pin 36 is used to unlock the slide door 1.

At the start of the opening / closing operation of the slide door 1 in the fully closed or fully opened state, anti-slip portions 11a are provided at both ends of the rail member 11 with which the driving rubber roller 28 comes into contact, and a plurality of circular recesses 40 are formed. Has been formed. The circular recess 40 has a diameter of 3 to 4 mm, a 90 ° edge on the rim, a depth of 0.5 mm or more, and a pitch of 5 mm or less (FIG. 3).

The operation of the opening / closing drive unit 3 will be described. When the drive motor 4 is rotationally driven while the electromagnetic clutch 5 is energized and coupled, the drive motor 4 rotates in such a manner that the worm 15, the worm wheel 16, the electromagnetic clutch 5, the output shaft 20, the large diameter pulley 23, the toothed belt 32, It is transmitted to the intermediate pulley 25, the toothed belt 34, the roller pulley 27, and the driving rubber roller 28. The rotational force of the driving rubber roller 28 is given to the rail member 11 by the frictional force between the driving rubber roller 28 and the rail member 11. At this time, the closed slide door 1 cannot immediately slide along the side surface of the body 2 and thus resists the rotation of the drive rubber roller 28. As a result, the first bent state of the dogleg shape
And, a force to stretch the second rotating arms 13 and 14 is applied to push the slide door 1 outward from the body 2,
Then slide it along the side of the body 2.

On the outer peripheral surface of the rotating drive rubber roller 28, the drive rubber roller 28 is deformed by being pressed by the rail member 11 to form a contact surface 28a, and the contact surface 28a slides on both ends of the rail member 11. It sequentially bites into some of the circular recesses 40 formed in the stopper 11a (FIG. 4). The edge of the circular recess 40 has an edge 4 with an acute angle of 90 °.
Since it is 0a, rolling resistance is generated in the driving rubber roller 28, the rail member 11 is moved without idling, and the slide door 1 passes over the catch spring (not shown), so that it is in a fully closed or fully opened state. It is opened and closed from.

The respective parameters of the circular depression 40 are measured and determined by the experimental method shown in FIG. As described above, the slide door 1 is held by the catch spring at the fully closed end and the fully open end. Therefore, when the opening / closing operation is started from the fully closed or fully opened state, a tensile load of at least 13 kgf is required in order to get over the catch spring. As shown in FIG. 6, if the depth of the circular recess 40 is 0.5 mm or more, it is confirmed that the load at the beginning of sliding of the driving rubber roller 28 exceeds 13 kgf. The diameter of the circular recess 40 is, as shown in FIG.
It is confirmed that the load at the beginning of sliding of the driving rubber roller 28 exceeds 13 kgf if it is 3 mm to 4 mm. Similarly, the pitch of the circular depressions 40 is 5 mm as shown in FIG.
If the following, the load at the beginning of sliding of the drive rubber roller 28 is 1
It is confirmed to exceed 3 kgf. The driving rubber roller 28 used in the above experiment had a diameter of 60 mm and a rubber hardness of 8
It is 0 Hs.

According to the above, the driving rubber roller 28 bites into some of the circular recesses 40 to reliably transmit the rotational driving force to the rail member, and even if moisture or dust adheres to the rail member, it is completely closed or There is no possibility that the sliding door 1 cannot be opened / closed from the fully opened state. Also, the driving rubber roller 2
The wear of No. 8 is small and the durability is not significantly lowered.
Furthermore, there is an advantage that even if foreign matter such as rubber, dust, or sand enters the circular recess 40, it is not clogged.

[Brief description of drawings]

FIG. 1 is a schematic perspective view showing a portion of a slide door.

FIG. 2 is a sectional view showing a configuration of an opening / closing drive unit.

FIG. 3 is an explanatory diagram of a non-slip portion of a rail member.

FIG. 4 is an explanatory diagram showing an operation.

FIG. 5 is an explanatory diagram showing an experimental method.

FIG. 6 is a graph showing the relationship between the depth of a circular recess and the load at the beginning of sliding of a driving rubber roller.

FIG. 7 is a graph showing the relationship between the diameter of a circular recess and the load at the beginning of sliding of a driving rubber roller.

FIG. 8 is a graph showing the relationship between the pitch of circular depressions and the load at the beginning of sliding of the driving rubber roller.

[Explanation of symbols]

 1 ... Sliding door 2 ... Body 11 ... Rail member 28 ... Driving rubber roller 31 ... Guide roller bearing 40 ... Circular recess

Claims (1)

[Claims] 1. A rail member fixed to a slide door side is sandwiched between a driving rubber roller and a sandwiching roller of an opening / closing drive mechanism provided on the vehicle body side, and the rail member is moved by rotation of the driving rubber roller, and An electric slide door opening / closing device for opening and closing a slide door, wherein the slide door has a diameter of 6 mm when the slide door is fully closed or fully opened.
A plurality of circular recesses having a diameter of 3 to 4 mm and a depth of 0.5 mm or more are formed at a pitch of 5 mm or less at the end of the rail member with which the driving rubber roller having a hardness of 0 mm and a rubber hardness of 80 Hs contacts. Electric slide door opening / closing device.