JP4256513B2 - Vehicle sliding door rattling control mechanism - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a backlash suppressing mechanism for a sliding door for a vehicle.
[0002]
[Prior art]
In a vehicle sliding door, the guide rollers provided at the upper and lower portions of the front portion of the door are fitted and supported by the upper and lower guide rails provided on the body side, so that the clearance between the guide rollers and the guide rails A backlash occurs at the front of the door. In order to cope with this, conventionally, as disclosed in, for example, Japanese Utility Model Publication No. 63-162635, Japanese Utility Model Publication No. 63-37420 or Japanese Utility Model Publication No. 7-4128, the door front end side and the body A wedge-shaped wedge is provided on one of the sides and a slope or a concave part is provided on the other side. When the door is fully closed, the slope or the concave part is press-fitted to the wedge, thereby sliding the door. It prevents backlash at the front of the door when fully closed.
[0003]
[Problems to be solved by the invention]
The conventional sliding door backlash suppression mechanism as described above has a possibility that the contact between the wedge and the inclined surface or the concave portion is increased due to variations in the installation of the door, and the closing performance of the door is deteriorated. In order to cope with this, a buffer member such as a rubber material or a spring has been interposed in the fitting portion so far, but there is a problem that if the acceleration at the time of vehicle body vibration increases, the backlash cannot be suppressed. Yes.
[0004]
An object of the present invention is to solve the conventional problems as described above, and to provide a mechanism that suppresses backlash at the front portion of the door without greatly impeding the closing performance of the sliding door.
[0005]
[Means for Solving the Problems]
The present invention provides a lever or upper arm attached to the lower or upper part of the front part of a sliding door, with a guide roller fitted in a guide rail provided on the vehicle body side at one end and a stopper provided at the other end. Is installed so that it can rotate in a plane almost parallel to the floor, and a spring is provided to urge the lever to rotate in one direction. The guide roller is pressed against the inner surface of the lower or upper guide rail in the fully closed state of the slide door by rotating the lever against the urging force of the spring and hitting the contact surface of The reaction force of the pressing force generates a rotational moment around the door latch device on the sliding door, and the guide roller on the opposite side of the guide roller is also fitted. Is pressed against the inner surface of the Le, it is possible to reliably inhibit the sliding door front overall backlash.
[0006]
Further, the ratio b / a between the distance “a” from the rotation center of the lever to the stopper center and the distance “b” from the rotation center to the guide roller center is set to be smaller than 1, thereby preventing the door from closing. It can be made small, and deterioration of the door closing property can be prevented as much as possible.
[0007]
Furthermore, by adopting a structure in which the stopper is attached to the lever so that the front projecting height can be adjusted, variations in the longitudinal direction of the door mounting can be easily and accurately absorbed by adjusting the height of the stopper. .
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0009]
In FIG. 1, reference numeral 1 denotes a slide door. As is conventionally known, the slide door 1 is provided with upper and lower rollers provided at the upper and lower parts of the front part and rollers provided at the center part of the rear part on the vehicle body side. By being fitted and supported by the upper and lower guide rails and the center guide rail, they are slid in the front-rear direction to open and close. A door latch device 1a is provided at the front end of the slide door 1. When the door is fully closed, a latch member (not shown) of the door latch device 1a is engaged with a door striker (not shown) provided on the vehicle body side. The door is latched.
[0010]
FIG. 2 is a diagram showing details of the roller configuration provided in the lower part of the X part of FIG. 1, that is, the front part of the slide door, and shows one embodiment of the present invention.
[0011]
In FIG. 2, reference numeral 2 denotes a lower arm attached to the front lower portion of the slide door 1, and a load roller that rolls on the guide surface 10 provided on the vehicle body side at the lower floor and supports the door load at the lower end of the lower arm 2. 3 is attached, and a lever 4 having a guide roller 5 at one end and a stopper 6 at the other end is attached to the lower arm 2 so as to be rotatable by a shaft 7 in a plane substantially parallel to the floor. The guide roller 5 provided at one end of the sliding roller is fitted on a guide rail 9 fixed to the lower surface side of the floor and rolls to restrict the sliding door front portion in the vehicle width direction. The lever 4 is urged by a spring 8 in the clockwise direction in FIG. 2A. When no counterclockwise external force acts on the lever 4, the abutment portion is urged by the urging force of the spring 8. 4a is held in a state where it is pressed against the lower arm 2, thereby preventing the lever 4 from rattling.
[0012]
The stopper 6 is attached to the other end portion of the lever 4 by screwing so that the front protrusion height h of the stopper 6 can be adjusted.
[0013]
In the above, when the slide door 1 is opened and closed, the load roller 3 and the guide roller 5 roll on the guide surface 10 and the guide rail 9 at the front lower part of the door, and as shown in FIG. When the upper side guide roller 50 provided at the tip of the upper arm 20 attached to the front upper part of the roller 1 rolls in the upper side guide rail 90 provided on the vehicle body side, the front part of the slide door 1 is guided and supported. A rear guide roller (not shown) provided at the rear center portion of the slide door 1 rolls in a rear guide rail (not shown) provided on the vehicle body side so that the rear portion of the slide door 1 is guided and supported. However, when the slide door 1 is closed, the stopper 6 provided at the other end of the lever 4 is brought into contact with the contact surface 11 provided on the vehicle body immediately before the sliding door 1 is fully closed. In force In the fully-closed state of the slide door 1 (the latch member of the door latch device 1a is in the latched state engaged with the door striker on the vehicle body side), FIG. As shown in B), the guide roller 5 is held in a state of being pressed against the inner surface of the guide rail 9.
[0014]
In this state, as shown in FIG. 1 (B), a rotational moment M around the door latch device 1a is generated in the slide door 1 by the reaction force f ′ of the vehicle width direction component f of the pressing force F of the guide roller 5, As a result, the upper guide roller 50 is pressed against the inner surface of the upper guide rail 90, and the upper and lower guide rollers 5 and 50 are pressed against the inner surfaces of the upper and lower guide rails 9 and 90, thereby sliding. The play of the entire front portion of the door 1 is completely suppressed.
[0015]
In the above, the reaction force of the force pressing the guide roller 5 against the inner surface of the guide rail 9 acts as a force W that hinders the door closing performance. The ratio b / a between the distance a to the center and the distance b from the rotation center of the lever 4 to the center of the guide roller 5 is set to be smaller than 1, thereby preventing the door from closing (W = b / a · F) can be made small, and by making the lever ratio b / a as small as possible, it is possible to prevent deterioration of the door closing performance as much as possible. The stopper 6 may be made of an elastic material such as rubber, and a force that hinders the door closing performance that cannot be absorbed simply by reducing the lever ratio b / a may be absorbed by the elasticity of the stopper 6.
[0016]
By reducing the lever ratio b / a of the lever 4 as described above, it is possible to absorb variations in the vehicle body longitudinal direction installation, but the front-rear direction building that cannot be dealt with by the lever ratio b / a alone. The variation can be accurately and easily dealt with by adjusting the front protrusion height h of the stopper 6.
[0017]
When the door 1 is opened, when the door latch device 1 is unlatched, the lever 4 is rotated clockwise by the pressing reaction force f ′ and the urging force of the spring 8, and the guide roller 5 is moved from the inner surface of the guide rail 9. Simultaneously with the separation, the upper side guide roller 50 is separated from the inner surface of the upper side guide rail 90, and the door can be opened as usual by operating the slide door 1 rearward.
[0018]
In the illustrated embodiment, the lever 4 is pivotally attached to the lower arm 2. However, the lever 4 having the upper side guide roller 50 at one end and the stopper 6 at the other end is connected to the upper arm. 20 is rotatably mounted by a shaft 7, a load roller 3 and a guide roller 5 fitted to a guide rail 9 are mounted on the lower arm 2, and the stopper 6 of the lever 4 pivotally mounted on the upper arm 20 when the door is closed. The upper side guide roller 50 may be pressed against the inner side surface of the upper side guide rail 90 by the contact with the upper side contact surface 11. In this case as well, in the same manner as in the illustrated embodiment, the rotational moment around the door latch device 1a is applied to the slide door 1 by the reaction force f ′ of the vehicle width direction component f of the pressing force F of the upper guide roller 50 (illustrated embodiment). The lower side guide roller 5 is pressed against the inner side surface of the lower side guide rail 9 by the rotational moment, and the play of the entire front part of the slide door 1 is completely suppressed. It is done.
[0019]
【The invention's effect】
As described above, according to the present invention, in the sliding door for a vehicle, it is possible to surely suppress the backlash at the front part of the door when the door is fully closed without significantly impairing the closing performance of the door. It is possible to easily and accurately cope with variations, and can be combined with the simple structure and low cost, and can bring about a great practical effect.
[Brief description of the drawings]
1A and 1B show an example of an embodiment of the present invention, in which FIG. 1A is a schematic side view of a vehicle provided with a sliding door, and FIG. 1B is a schematic end view of a front side of the sliding door.
2A and 2B are diagrams illustrating a detailed structure example of a portion X in FIG. 1, in which FIG. 2A is a plan view of a main portion, and FIG. 2B is a longitudinal front view of the main portion.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Sliding door 1a Door latch apparatus 2 Lower arm 3 Load roller 4 Lever 4a Contact part 5 Guide roller 6 Stopper 7 Axis 8 Spring 9 Guide rail 10 Guide surface 11 Contact surface 40 Upper arm 50 Upper side guide roller 90 Upper side guide rail

Claims (2)

Having a lower arm or an upper arm attached to the front of the sliding door ;
In the backlash prevention mechanism of the vehicle sliding door, one end of the arm is attached to the front portion of the sliding door and the other end rolls on a guide surface provided on the vehicle body side via a load roller to support the door load.
A lever with a guide roller fitted in the guide rail provided at the vehicle body side at one end and a stopper at the other end is pivotally attached to the arm so that it can rotate in a plane substantially parallel to the floor. A spring for urging the lever to rotate in one direction relative to the arm ;
When closing operation of the slide door, per the stopper contact surface of the vehicle body before all close straight, by rotating relative to the arm the lever against the biasing force of the spring, the sliding door the guide roller is configured to be pressed against the inner surface of the guide rail in the fully closed state,
When the distance from the rotation center of the lever to the center of the stopper is a and the distance from the rotation center to the center of the guide roller is b, the lever ratio b / a is smaller than 1. A rattling control mechanism for vehicle sliding doors. In the backlash prevention mechanism of the sliding door for vehicles according to claim 1 ,
The stopper the vehicle sliding door of the backlash restraining mechanism, characterized in that attached to the other end of the lever to be able to adjust the forward-projecting height thereof.

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