JPH0727340Y2 - Opening / closing device for vehicle sliding doors - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] Industrial field of application The present invention relates to an opening / closing device for a vehicle slide door, which is adapted to properly transmit power between a door engine and a slide door.

2. Description of the Related Art Conventionally, there are various automatic opening / closing devices for vehicle sliding doors,
Both of them open and close automatically with the door locked by pressing the door lock knob, but when manually opening and closing in an emergency etc., it is necessary to switch from automatic to manual, which requires a mechanism clutch and the door engine becomes expensive. However, it has a drawback that the door lock knob must be raised and unlocked at the time of switching, and the lever operation from automatic to manual of the clutch is required, which requires two operations and is troublesome.

Therefore, Japanese Patent Application No. 1-1341341-2 (same applicant as the present application)
As can be seen in ", an endless chain is rotatably attached to the inside of the sliding door, a sprocket that is linked to the door engine is hooked on the chain, and a connecting tool is hooked on and released from the chain. A sliding door opening / closing device for a vehicle in which a tool, a door lock knob, a key hole lever, and a door handle are interlocked with each other has been developed. In order to move in and out, a "door engine mounting device in which a sprocket connected to a door engine is arranged inside a sliding door and the sprocket is slidable together with the door engine" has been developed.

Therefore, when engaging the endless chain attached to the sliding door and the sprocket of the door engine attached to the vehicle, the door engine is installed on the floor (step) of the vehicle, and the door engine can be slid horizontally. To engage the sprocket on the chain,
The applicant of the present application has developed a mechanism for interposing a slide link and a lifting link between a vehicle and a door engine. In such a mechanism, a spring (tensile coil spring) is interposed to press a sprocket against a chain. However, even with this mechanism alone, the sprocket tends to bite excessively into the chain, the chain is bent, and when the chain is running, the horizontally suspended chain is displaced up and down a little, so that the chain and sprocket The axial pitch of the shaft is not always accurate, proper, and constant, and it is very difficult for the sprocket to be pressed and engaged with the chain at all times for the same reason. If the sprocket is pushed up or pushed too much, the chain and sprocket State is not appropriate, at the time of opening and closing of the sliding door, at the time of automatic operation engaging sound between the chain and sprocket are increased, and the time of manual operation had the disadvantage that opening and closing operation of the sliding door is felt heavier.

Even if the chain is free during manual operation, the guide rail moves at the same time as the slide door (the idle pulley is the same). (Note that the chain has a specific point that is fixed by engaging the sprocket. However, since the sprocket presses the guide rail via the chain at this time, a frictional force is eventually generated between the sprocket and the guide rail, and it feels heavy when the sliding door slides. .

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention The present invention provides a meshing sound by optimizing the meshing state between the door engine and the slide door during power transmission from the sprocket to the chain during automatic and manual operation of the slide door. It is an object of the present invention to provide an opening / closing device for a sliding door for a vehicle, which is capable of reducing the sliding door and lightly moving the sliding door even when manually operated.

[Constitution of device]

Means for Solving the Problems The present invention has been made in view of the problem that meshing noise or manual operation is heavy based on the above-mentioned conventional technique, and by interposing a roller between the guide rail of the chain and the rotating shaft of the sprocket, the space between the sprocket and the chain is reduced. In order to solve the above-mentioned problems, the sprocket is pressed, engaged and meshed with the chain at a constant pitch between the shafts.

Effect The present invention, when the sliding door is automatically or manually slid, keeps the shaft pitch between the sprocket and the chain constant by the roller between the guide rail and the rotating shaft, and keeps the sprocket pressing force against the chain at a constant and proper pressure. Since the meshing of the chain and the chain is made smoother to reduce the meshing noise, the excessive pressing force is eliminated to make the movement of the guide rail smooth, and the sliding force required for manual operation and the opening / closing force of the sliding door are reduced. is there.

Embodiment An embodiment of the present invention will be described below with reference to the drawings. 1 is a slide door that automatically and manually opens and closes an opening for getting on and off a vehicle 2, and the slide door 1 is operated during opening operation. It slides in the front-rear direction along the vehicle 2 to open the opening, and moves in and out of the vehicle 2 (lateral direction when viewed from the front).

Reference numeral 3 is a floor provided inside the vehicle 2 or a step provided inside the vehicle 2 at a low position corresponding to the opening.

Reference numeral 4 denotes an opening / closing device capable of switching the sliding door 1 between automatic and manual operations. The opening / closing device 4 is constituted by a driven device 5 installed inside the sliding door 1 and a driving device 6 installed on a floor (step) 3. I am configuring.

7 is an endless chain, which is rotatably horizontally suspended by a pair of idle pulleys (not shown) mounted on the lower inside of the slide door 1, and the horizontal middle portion of the chain 7 is It is supported by the guide rails 8 and 8a.

The material and shape of the chain 7 are not limited to the chain and may be a wire, a belt, a timing belt or the like.

The guide rails 8 and 8a are horizontally fixed to the inside of the slide door 1, and the shape thereof is a gate shape so that the central openings 9 and 9a are left and covered by the closing bodies 10 and 10a from both outsides. A rotation preventing, for example, a comb-like connecting tool 11 is connected to the chain 7 so as to pass through the central openings 9 and 9a, and a sprocket 12 of the driving device 6 is engaged with the chain 7.

The connecting tool 11 selects the free and fixed state of the chain 7 and sets the automatic and manual operation states. The connecting tool 11 descends during automatic opening and closing to prevent the chain 7 from idling and to fix it. The chain 7 fixed by the rotation of the sprocket 12 of the driving mechanism 6 moves by, for example, functioning as a rack, and at the same time, the sliding door 1 slides, and the connector 11 rises at the time of manual opening / closing to raise the chain 7. Is a free state, and a specific point of the chain 7 that engages with the sprocket 12 in a fixed position is fixed in the front-rear direction, but most of the other chains 7 are deformed and moved to slide the door 1. The connecting device 11 for automatic opening and closing is interlocked with the door lock knob or key hole lever (both not shown), and the connecting device for manual opening and closing is also slid.
The lift of 11 is interlocked with a door handle (not shown).

Next, the driving device 6 mounted on the vehicle 2 side of the opening / closing device 4 will be described. The door engine 13 follows the entrance / exit direction of the sliding door 1 on the floor (step) 3 of the vehicle 2 (fixed in the sliding direction). Similarly, the door engine 13 is slidably mounted, and the door engine 13 is composed of a motor 14 having an appropriate transmission mechanism such as a worm gear unit. The sprocket 12 is mounted on the front end of the door engine 13, and the sprocket 12 is mounted as described above.
Is arranged inside the slide door 1 and is engaged with the chain 7 and the like.

Reference numerals 15 and 15a denote slide links that cause the door engine 13 to follow in and out of the slide door 1.
The lower end of 15a is pivoted on the step 3, and the upper ends of the slide links 15, 15a are pivotally supported on the movable base 16,
Movable base 1 by swinging slide links 15 and 15a
6 is slidable.

Reference numerals 17 and 17a denote lifting links, and the ends of the lifting links 17 and 17a are pivotally supported on the engine base 18 on which the door engine 13 is mounted, and the base ends of the lifting links 17 and 17a are pivotally supported on the movable base 16. The swinging of the elevating links 17, 17a makes it possible to raise and lower the door engine 13, and by such a mechanism, the door engine 13 slides in the lateral direction following the slide-in / out of the slide door 1, and at that time, the slide links 15, 15a The elevating links 17, 17a absorb the ascending amount of the movable base 16 that slightly rises while drawing an arc generated during rocking, and moves the door engine 13 horizontally while maintaining the engagement state of the sprocket 12 and the chain 7, etc. It is possible.

19 is a spring composed of a tension coil spring,
The base end of the spring 19 is mounted above the movable base 16, and the end of the spring 19 is attached to the engine base 18.
It is installed below the chain and the chain 7 is pulled by the tension of the spring 19.
The sprocket (12) which is engaged with the above is pushed upward together with the main body of the door engine (13).

Reference numeral 20 denotes a rotating shaft of the motor 14, and the sprocket 12 is fixed to the tip of the rotating shaft 20 and
The outer peripheral edge of the rotary shaft 20 at the inner position of the contact point of the outer peripheral surface of the guide rails 8 and 8a is in contact with the closing bodies 10, 10a ,.
A disc-shaped roller 21 whose diameter and size are set is loosely fitted.

The roller 21 is preferably made of plastic or the like, and if a bearing is mounted between the rotary shaft 20 and the roller 21, the rotation of the roller 21 will be smoother.

Reference numeral 22 is a sprocket guide mounted inside the slide door 1, and the sprocket guide 22 is a base end slide door 1
A guide portion 24 at the center opening 9 of the guide rails 8 and 8a.
It is oriented to 9a, and when engaging the sprocket 12 with the chain 7, the work can be easily performed.

If repair is required due to mechanical problems, etc., and the sprocket 12 and chain 7 must be separated, the motor 14
If you push down from above, the sprocket 12 is lowered by separating the sprocket 12 from the chain 7 by the operation of the elevating links 17 and 17a against the spring 19, and the motor 14 is lowered from the lowered state when meshing as described above. Raise it.

Further, as a method of using such a mechanism, the automatic opening / closing device 4 for the slide door 1 as in the present application can be manually opened by operating the door lock knob or the like in an emergency, but the slide door 1 can be opened manually. For example, when the sliding door 1 cannot be opened due to a failure of the opening / closing device 4 such that the engagement between the chain 7 and the coupling 11 cannot be released, the chain 7 and the sprocket 12 are separated as described above. The driven device 5 (sliding door 1) and the driving device 6 (vehicle 2) are separated from each other, and the opening of the sliding door 1 is guaranteed even in the worst case.

Next, the operation of the vehicle slide door opening / closing device according to the present invention will be described. By operating the door lock knob, the key hole lever, the door handle, etc., the connecting tool 11 engaged with the chain 7 is moved up and down to automatically or manually operate. It is in the operating state, and the motor 14 automatically
Is operated to rotate the sprocket 12, and at this time, the chain 7 is in a fixed state by the connecting tool 11 lowered and engaged, so that the chain 7 functions as, for example, a rack,
The rotational force of the sprocket 12 becomes the sliding force of the slide door 1, and the slide door 1 is opened and closed. When the manual operation is raised, the linkage 11 is released, and the chain 7 is in the free state. When it is made to move, the chain 7 moves together with the guide rails 8 and 8a and the idle pulley on the basis of the portion (specific point) engaged with the stopped sprocket 12 and deforms.

At this time, the sliding door 1 slides in the front-back direction with respect to the vehicle 2 and, at the same time, the sliding door 1 slides in the vehicle 2 when opened.
The door engine 13 itself laterally moves outward by the slide links 15 and 15a, and at the same time, moves up and down outside (outgoing in and out)
17 and 17a, and the spring 19 keeps the sprocket 12 engaged and pressed against the chain 7.

However, due to the mechanism using the spring 19, the distance between the centers of the chain 7 and the sprocket 12, that is, improper axial pitch L, excessive pressure, or running of the chain 7,
In order to prevent the inter-axis pitch L from subtly fluctuating due to the operation of the slide door 1, etc.
Since the spring 19 presses the sprocket 12 against the chain 7 by the spring 19, the shaft-to-shaft pitch L between the chain 7 and the sprocket 12 is always constant, and therefore, the proper engaging force in the engagement between the sprocket 12 and the chain 7 is obtained. Can be secured at all times, and therefore sprocket 12 and chain 7
The meshing state of can be smoothed and the meshing noise due to excessive engagement force can be reduced.

Further, during manual operation, since the sprocket 12 that has stopped rotating engages the chain 7 with an appropriate pressure, excessive pressure does not act on the moving guide rails 8 and 8a, and the guide rails 8 and 8a It moves with the slide door 1, and therefore the slide door 1 can be moved very lightly, and the rotary shaft 20
Does not rotate, but the relationship between the guide rails 8 and 8a and the roller 21 causes a rolling motion, and the relationship between the roller 21 and the rotary shaft 20 causes a rotational sliding motion, so that the slide door 1 can be moved very lightly.

[Effect of device]

In short, according to the present invention, the guide rails 8 and 8a are provided inside the slide door 1 to rotatably mount the endless chain 7, and the connecting tool 11 is movably connected to the chain 7,
On the other hand, a movable base 16 is attached to the vehicle 2 via slide links 15 and 15a, an engine base 18 is attached to the movable base 16 via lift links 17 and 17a, and a space between the movable base 16 and the engine base 18 is provided. The spring 19 is attached, and the sprocket 12 that engages with the chain 7 is attached to the rotary shaft 20 of the door engine 13,
Since the roller 21 is attached so as to come into contact with the guide rails 8 and 8a, the axial pitch L between the sprocket 12 and the chain 7
The sprocket can be set at a constant distance.
12, the pressing force of the chain 7, the guide rails 8 and 8a and the engaging force can always be properly maintained, and therefore, the optimum meshing state can be constantly set, thus reducing the meshing noise, and the guide rail 8 by the sprocket 12 during the manual operation. , 8a can be eliminated, so that the guide rails 8 and 8a can freely move when the slide door 1 is manually slid, and the slide door 1 can be moved very lightly.

Further, since the present invention is an improvement of the opening / closing device for a vehicle slide door filed before the application of the present application, a door engine and an opening / closing device that do not require a clutch, which is the object of the present application and the previous application, can be provided at low cost. Its practical effect is enormous.

[Brief description of drawings]

1 shows an embodiment of the present invention, FIG. 1 is a partial sectional side view of an opening / closing device for a vehicle sliding door according to the present invention, and FIG. 2 is a sectional view of a main part. 1 ... sliding door, 2 ... vehicle, 7 ... chain, 8,
8a …… Guide rail, 11 …… Coupling, 12 …… Sprocket, 13 …… Door engine, 15,15a …… Slide link, 16 …… Movable base, 17,17a …… Lift link, 18 …… Engine base , 19 ...... spring, 20 ......
Rotating axis, 21 …… Roller, L …… Axis pitch

Claims (1)

[Scope of utility model registration request] 1. A guide rail is provided inside a sliding door to rotatably mount an endless chain, and a coupling tool is movably connected to the chain, while a movable base is attached to a vehicle via a slide link. The engine base is attached to the movable base via a lifting link, a spring is mounted between the movable base and the engine base, and a sprocket that engages with the chain is attached to the rotary shaft of the door engine, and a guide rail is installed. A sliding door opening / closing device for vehicles, characterized in that a roller is attached so as to come into contact with the vehicle.