JPH0624257Y2 - Sliding door opening / closing mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Use of the Invention The present invention is used in the field of sliding doors of automobiles and other vehicles, aircraft and buildings, and can open and close the door of a cab-over type automobile or a passenger car slidably in the longitudinal direction. The opening / closing mechanism of the sliding door.

2. Description of the Related Art Conventionally, in a sliding door installed in a cab-over vehicle or a wagon vehicle, an arm that horizontally swings and projects toward the vehicle body side or the door side is attached, and the arm is provided inside at the tip of this arm. There is a structure in which a sliding portion is rotatably pivotally supported and a door is opened and closed by two movements of turning and sliding. In the case of this structure, a mechanism such as a hook engagement by a spring is provided for temporarily fixing the arm and the sliding portion, which are required when switching between the swinging of the arm and the sliding of the door.

Problems to be Solved by the Invention According to the conventional structure described above, the structure of the switching portion is complicated and requires delicate adjustment, so that not only is it complicated to manufacture, but when it is attached to the vehicle, There is a problem that it is difficult to expect smooth operation for a long period of time due to damage and wear caused by vibration during traveling.

The present invention simplifies the structure and suppresses the sliding movement of the door when the arm supporting the door is swung to protrude, and the swinging of the arm is suppressed when the door is sliding to prevent the arm from swinging when sliding. The purpose of the present invention is that the movement is performed moderately and at the same time the mutual movements of the turning and the sliding are smoothly and appropriately performed, and the operability, safety and durability are maintained. .

Means for Solving Problems The present invention provides an arm (5) that is horizontally supported by a support (1) so as to be horizontally rotatable.
After pivoting and protruding, the slider pivotally supported on the tip of the arm (5)
(8) and the slider (8), a slide rail (12) movably mounted in the front-rear direction, and a sliding door opening / closing mechanism in which the door (3) is movable in the front-rear direction. (1) A swing limiting mechanism that restricts the swing of the arm (5) is provided, and the arm tip shaft (9) that rotatably supports the arm (5) with respect to the slider (8) is attached to the slider (8). ), The lock plate (11) is rotatably supported on the arm tip shaft (9), and the inner diameter (r) is slightly smaller than the outer diameter (R) of the arm tip shaft (9) and is wound. Winding spring (1
3) is fitted and a recess (11a) is formed on one side of the lock plate (11) to engage and disengage the lock pin (14) provided on the slide rail (12) when the door is opened and closed. One end (13a) of 13) is locked to the arm (5) and the other end (13b) is locked to the lock plate (11).

In the figure, (15) is a sliding stopper fixed to the lower end of the sliding rail (12), and when the door (3) is rapidly closed, the recess (11a) of the lock plate (11) and the winding spring (13) are ) And lock pin
(14) When the lock by is not effective, the slider
This is for stopping the forward movement of the sliding rail (12) which interlocks with the door (3) by hitting the side edge (8c) of the lower plate (8b) of (8). Further, (16) is a lock plate (11) via the arm tip shaft (9).
The stepped portion formed by cutting out a part of the tip of the arm (5) on which (1) is attached, (11b) is a cutout portion formed in the lock plate (11) for meshing with the stepped portion (16), Winding spring
This is for stopping the counterclockwise rotation of the lock plate (11) even if the (13) is cut off.

Operation The operation of the present invention will be described. From the fully closed state of the door shown in FIG. 3, the small door (3) is pushed from inside the vehicle or pulled out of the vehicle, and the arm (5) around the shaft (6) is moved outward. Start turning horizontally towards. At this time, the position of the lock plate (11) with respect to the arm (5) does not change due to the elasticity of the winding spring (13). On the other hand, on one side of the lock plate (11), there is a load for sliding the slide rail (12) through the lock pin (14) engaged with the recess (11a). Therefore, the winding spring (13) initially tightens the arm tip shaft (9), but as the arm (5) turns, the other end (13
b) is displaced with respect to the one end (13a) in a direction in which the tightening force of the winding spring (13) is loosened, and the arm (5) is displaced from the support (1) by 9
The base end (5a) of the arm (5) abuts the turning restriction mechanism of the support part (1) and stops at the position of turning by 0 degree, and the door (3) is almost arm-shaped.
The car body (1) on the outside of the car body with an interval corresponding to the length of (5)
Located parallel to.

Since the lock pin (14) is displaced rearward together with the door (3) and the sliding rail (12), the lock plate (11) and the recess (11a) are counterclockwise about the arm tip shaft (9). The lock pin (14) comes off the recess (11a),
(12) can be slid backward via rollers (17)
You can open (3). Since the lock plate (11) with the lock pin (14) disengaged from the recess (11a) has no load, the spring (13) returns to its old shape by its elasticity, and the lower plate of the slider (8) ( Since the arm (5), which is fixed to the arm tip shaft (9) fixed to 8b) and cooperates with the winding spring (13), is prevented from turning in either the left or right direction.

Next, when closing the door, when moving the door (3) forward, the sliding rail (12) slides along with the door (3) guided by the roller (17), and the sliding rail (12). The lock pin (14) fixed to the lock plate (11) engages with the recess (11a) of the lock plate (11),
Turn the lock plate (11) clockwise. As the lock plate (11) rotates, one end (13
a) is also displaced and expanded against the elastic force, and the tightening of the arm tip axis (9) is loosened, so that the arm (5) can turn and tries to move the door (3) forward. The force acts on the arm (5) so that the shaft (6) and the arm tip shaft (9)
A reverse turn is started centering around. At this time, lock pin (14)
Is engaged with the recess (11a) of the lock plate (11), and the lock plate (11) is connected to the arm (5) by the winding spring (13).
The lock plate (11) acts counterclockwise to prevent the lock plate (11) from rotating clockwise, so that the lock plate (11) is connected through the lock pin (14) engaged with the recess (11a). The sliding rails (12) and doors (3) that are present are also prevented from sliding forward.

Embodiment An embodiment of the present invention will be described with reference to the drawings showing the sliding door of the cab of a cab-over type vehicle.
A support part fixed horizontally in the opening (4) of the door (3) of the arm (5) (5) toward the outside of the vehicle body (2) with a space between the support part (1). The arm stopper (7) is supported by the shafts (6) and (6) so as to be horizontally projected and pivotally supported by the shafts (6) and (6), and prevents the arm (5) from pivoting more than 90 degrees when the door is opened near the vehicle body side wall (2a). ) Is projected (Fig. 2). At the tip of one arm (5), a slider (8) horizontally displaced in parallel with the support portion (1) as the arm (5) turns is attached by an arm tip shaft (9) (9). Rotatably attached, support section
The parallelogram link is formed by (1), the arm (5) and the slider (8). A notch bearing portion (5b) and a hole (10) are partially formed in the horizontal direction at the tip of the other arm (5). The tip (5c) of the one arm (5) is rotatably supported by the arm tip shaft (9) on the slider (8) having a U-shaped vertical section. In addition, the notch bearing part (5
In b), the lock plate (11) and the winding spring (13) are superposed and rotatably supported on the slider (8) by the arm tip shaft (9), and the arm tip shaft (9) is the slider.
Stick to (8). The lock plate (11) is formed with a recess for engaging and disengaging the lock pin of the slide rail (12) and is provided with a hole (10). Inner diameter (r) of the winding spring (13)
Is the outer diameter of the arm tip shaft (9) so that it can be wound around the arm tip shaft (9) when the arm (5) is swung 90 degrees and protruded to prevent the rotation, that is, the reverse turning of the arm (5). (R) is a winding spring that has a smaller diameter than that of (R) and has elasticity in the winding direction.One end is in the hole (10) of the lock plate (11) and the other end (13b) is in the arm (5). Lock in hole (10). Rollers (17) (17) are planted in front of and behind the lower plate (8b) of the slider (8) so as to be rotatable, and fixed horizontally inside the door (3) in the longitudinal direction of the vehicle body. A sliding rail (12) having a U-shaped cross section is installed slidably on the rollers (17) (17).

Effect According to the present invention, the front door is opened while the door lock is unlocked to open the door and the arm is rotated to displace the door.
The sliding of (3) is restricted by the sliding stopper (15),
When trying to slide backward, the lock pin (14) tries to rotate the lock plate (11) counterclockwise, but the winding spring (13) is tightened on the arm tip shaft (9) so that the lock plate (11) rotates. Without sliding the door, the arm pivoted and protruded,
That is, during opening and closing of the door, the arm is prevented from turning in either the left or right direction by tightening the spring against the shaft, and the turning of the arm and the opening and closing of the door can be performed smoothly and safely with a moderation. It is easy to operate and durable.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention. FIGS. 1 and 2 are schematic views of the present invention applied to a door of a cab-over type truck. FIG. 1 is a side view and FIG. Fig. 3 is an enlarged cross-sectional plan view of the parts, Fig. 3 is a plan view of the main part when the door is closed, and Fig. 4 is a state in which both arms have swiveled and projected from the passenger compartment immediately after the start and end of rail sliding when opening and closing the door. 5 is an exploded perspective view of the rear arm portion in the state shown in FIG. Reference numeral: 1 ... Supporting portion, 8c ... Side edge 2 ... Car body, 9.9 ... Arm tip axis 2a ... Side wall, 10 ... Hole 3 ... Door, 11 ... Lock plate 3a ... Inner side surface, 11a ...... Concave part 4 …… Opening part, 11b …… Notch part 5 …… Arm, 12 …… Sliding rail 5a …… Base end, 13 …… Winding spring 5b …… Notch bearing part, 13a …… One end 5c …… Tip, 13b …… Other end 6 ・ 6 …… Shaft, 14 …… Lock pin 7 …… Arm stopper, 15 …… Sliding stopper 8 …… Slider, 16 …… Step 8a …… Upper plate, 17 …… Roller 8b ... Lower plate

Claims (1)

[Scope of utility model registration request] 1. A slider (8) axially supported on the tip of the arm (5) and the slider (8) after the arm (5) pivotally supported on the support (1) so as to be horizontally rotatable is projected. In a sliding door opening / closing mechanism in which a door (3) is movable back and forth through a sliding rail (12) installed so as to be movable back and forth, an arm (5) is provided on one side of the supporting portion (1). A swing limiting mechanism for restricting the swing of the arm (5) is rotatably supported on the slider (8), and the arm tip shaft (9) is fixed to the slider (8). In (9), the lock plate (11) is rotatably supported, the inner diameter (r) is slightly smaller than the outer diameter (R) of the arm tip shaft (9), and the winding spring (13) has elasticity in the winding direction. ), A recess (11a) is formed on one side of the lock plate (11) to engage and disengage the lock pin (14) provided on the slide rail (12) when the door is opened and closed, and the winding spring (13 ) End (13a)
An opening / closing mechanism for a slide door, characterized in that the arm (5) is locked to the other end (13b) of the lock plate (11).