JPH01317828A - Slide door structure of vehicle - Google Patents

Abstract

PURPOSE:To perform the opening and closing of a door always simply and appropriately by decreasing the sliding force in order to have the slide door slided upward along the inclining direction and increasing the sliding force in order to have the slide door slided downward. CONSTITUTION:When an aperture 10a formed at the side part of a car body 10 is released by sliding a slide door 12, this release is detected by a door switch that is not shown on the illustration and an inclination sensor 14 is actuated. The inclination sensor 14 detects the inclined state of the car body and activates the rotation of a motor 20. The motor 20 rotates in the opposite direction from the rotating direction of a gear 24 when the door 12 slides downward in the inclining direction by the gravitation, and the motor 20 transmits torque to the gear 24 through a liquid clutch 22. Accordingly, when the door 12 slides upward along the inclining direction, the sliding force becomes smaller, and when the door slides downward, the sliding force becomes bigger.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention provides an opening formed in a vehicle, particularly in a vehicle body side.
The present invention relates to a sliding door structure for a vehicle equipped with a sliding door that can be opened and closed by sliding in the front and rear directions.

(Prior art) As for the sliding door structure of the above-mentioned vehicle,
As exemplified in Japanese Patent No. 9478, there is a guide rail provided in the longitudinal direction on the side of the vehicle body, a load roller provided on the sliding door that transfers the bearing surface of the guide rail, and a load roller that slides in the guide groove of the guide rail. A roller mechanism including a movably fitted guide roller and a roller mechanism is known.

(Problem to be Solved by the Invention) However, when a vehicle equipped with such a sliding door structure is parked on a slope, for example, an uphill slope, the sliding door is urged downward in the direction of inclination by gravity. For this reason, when opening this sliding door, the sliding operating force is very small, so if you are not careful, the sliding door may open unexpectedly, which is dangerous. Also, when closing the sliding door, a large sliding operating force is required. Closing the door can be difficult for people who are weak, such as women. The above problem also applies when parking a vehicle on a downhill slope.

(Objective of the Invention) In view of the above, the present invention provides that the sliding operation force does not change even when parking on a slope, so that the sliding door does not open or close unexpectedly and can be opened and closed without requiring a particularly large force. The purpose of the present invention is to provide a sliding door structure for a vehicle that can be used.

(Means for Solving the Problems) In order to achieve the above object, the present invention reduces the sliding operating force when the vehicle body is tilted and increases, and reduces the sliding operating force when the sliding operating force becomes small. is what makes this bigger.

Specifically, the solution taken by the present invention is that in a vehicle equipped with a sliding door that covers an opening formed in the side of the vehicle body so as to be openable and closable by sliding in the longitudinal direction, the sliding structure of the vehicle is an inclination sensor that detects the inclination state in the front-rear direction; and an inclination sensor that operates in response to the output from this inclination sensor, and when the sliding door is slid upward along the inclination direction, the sliding operation force is small, and when it is slid downward, the sliding operation force is small. The structure includes an operating force variable means for variably controlling the door opening/closing force of the sliding door so that the sliding operating force is increased.

(Function) With the above configuration, when a vehicle equipped with the vehicle sliding structure according to the present invention is parked on a slope, the tilt sensor detects the tilt state of the vehicle body in the front and rear direction, and activates the operating force variable means to prevent the vehicle from tilting. The door opening/closing force of the sliding door is variably controlled so that when the sliding door is slid upward in the direction, this operating force is small, and when it is slid downward, this operating force is large. The operating force is no different from the operating force when the vehicle is parked on a flat surface.

(Example) Embodiments of the present invention will be described below based on the drawings.

FIGS. 1A to 1G show a sliding structure for a vehicle according to a first embodiment of the present invention. A sliding door 12 is arranged near the opening 10a formed in the side of the vehicle body 10 to cover the opening 10a, and the sliding door 12 is connected to a well-known guide rail provided on the lower side of the vehicle body 10. It is slidable in the front and rear directions by a well-known roller mechanism that engages with this guide rail.

An inclination sensor 14 is disposed near the lower end of the opening 10a of the vehicle body 10 to detect the inclination state of the vehicle body 10 in the longitudinal direction, and this inclination sensor 14 is connected to a door switch 16 attached to the vehicle body 10. and is activated when the door switch 16 detects that the sliding door 12 is opened.

A motor 20 connected to the tilt sensor 14 is disposed near the tilt sensor 14, and the motor 20 rotates in response to the output of the tilt sensor 14. The rotating shaft 20a of the motor 20 is connected to a gear 24, which is a spur gear, via a fluid clutch 22, and this gear 24 is shown in FIG.
As shown in (E), it extends to the inside of the sliding door 12 by penetrating the cutout groove 12a on the inner surface of the lower part of the sliding door 12. A gear rail 26, which is a rack extending in the front-rear direction, is disposed at the lower end of the inside of the sliding door 12, and the circumferential surface of the gear 24 meshes with the upper surface of the gear rail 26. As shown in FIG. 1(B), the rear end of the gear rail 26 is bent outward, and when opened, the sliding door 1
Even when the gear 2 moves backward after moving outward, the gear 24 and the gear rail 26 continue to mesh as shown in FIG. 1(d).

The motor 20, fluid clutch 22, and gear 2 described above
4 and the gear rail 26 constitute an operating force variable means, and this operating force variable means variably controls the door opening/closing force of the sliding door 12 in the following manner. That is,
When the sliding door 12 is opened, the door switch 16 detects the opening of the door and activates the tilt sensor 14. When the tilt sensor 14 detects the tilted state of the vehicle body 10, it outputs a signal and receives this output. The motor 20 rotates.

The direction of rotation of this motor 20 is determined by the gear 2 when the slide door 12 slides downward in the direction of inclination due to gravity.
The rotational movement of the motor 20 and the gear 24 in the opposite direction to the direction in which the motor 4 is intended to rotate is possible because the fluid clutch 22 is interposed. In this way, since the gear 24 is given a rotational force in the opposite direction to when the sliding door 12 slides downward due to gravity, the sliding operation force is reduced when sliding the sliding door 12 upward along the inclination direction. The door opening/closing force of the sliding door 12 is variably controlled so that the sliding operation force is increased when the sliding door 12 is slid downward. In addition,
In this case, the rotation speed of the motor 20 can be changed in accordance with the magnitude of the tilt angle detected by the tilt sensor 14.

FIG. 2(a) shows an example of a modification of the sliding structure of the vehicle, in which, unlike the previous embodiment, a gear rail 26 is attached to the vehicle body 10, and a motor 20, a fluid clutch 22, and a gear 24 are attached to the sliding door 12. . Further, the front end of the gear rail 26 is bent inward, and a set of bevel gears 28 is disposed between the fluid clutch 22 and the gear 24. Furthermore, a power rail 32 is attached above the gear rail 26 via an insulating plate 30, and when this power rail 32 and a power brush 34 connected to the motor 20 come into contact, the motor 20 is connected to the power source. Ru. Note that in the vehicle sliding door structure according to this modification, the door opening/closing force of the sliding door 12 can also be variably controlled in the same manner as in the embodiment described above.

3A to 3C show a sliding door structure for a vehicle according to a second embodiment of the present invention, in which a roller bracket 40 attached to the inner surface of the sliding door 12 has a load roller 42a and a guide roller. 42b.
is installed.

On the other hand, a guide rail 43 is disposed in the longitudinal direction near the lower end of the opening 10a of the vehicle body 10, and as the load roller 42a runs on the guide rail 43, the sliding door 12 can freely slide in the longitudinal direction.

An air cylinder 44 is arranged behind the opening 10a, and a piston rod 44 of this air cylinder 44
The tip of a is connected to the elongated hole 40a of the roller bracket 40. This elongated hole 40a allows the slide door 12 to move outward and then move rearward when opened.

As shown in FIG. 3(C), the head side air chamber 44b and rod side air chamber 44C of the air cylinder 44 have pressure sensors 46 and 47, respectively, and an air communication passage 48 having an electromagnetic shutoff valve 50. are connected to each other by. The head side air chamber 44b and the rod side air chamber 44c are connected to the compressor 52a and the air tank 5.
The air passage 51 is connected to a compressed air supply means 52 consisting of a compressed air supply means 2b, and the air passage 51 is provided with an electromagnetic switching valve 54, which is a four-bottom, three-position switching valve, and variable orifices 56 and 57. has been done. The inclination angle of the vehicle body 10 detected by the inclination sensor 14 and the air pressure in the head side air chamber 44b and the rod side air chamber 44c detected by the pressure sensors 46 and 47 are respectively input to the CPU 58, and based on this input, the CPO 58 is the opening and closing of the electromagnetic on-off valve 50,
The amount of air passing through the variable orifices 56, 57 and the position of the electromagnetic switching valve 54 are controlled.

Air cylinder 44 and pressure sensor 46.4 explained above
7, air communication passage 48, electromagnetic on-off valve 50, air passage 51,
The compressed air supply means 52, the electromagnetic switching valve 54, the variable orifice 56, 57, and the CPU 58 constitute a variable operating force means, and this variable operating force variable controls the door opening/closing force of the sliding door 12 in the following manner. do. That is, first, when the sliding door 12 is opened, the door switch 16 detects this and activates the inclination sensor 14.

When the tilt sensor 14 detects the horizontal state of the vehicle body 10, the CPU 58 opens the electromagnetic on-off valve 50 and switches the electromagnetic switching valve 54 to the neutral position. In this way, the head side air chamber 44b and the rod side air chamber 44c of the air cylinder 44 communicate with each other, and the door opening/closing force of the sliding door 12 is not affected.

Further, when the inclination sensor 14 detects the inclination state of the vehicle body 10 on an uphill slope, the CPO 58 moves the head side air chamber 44b and the rod side air chamber corresponding to the inclination angle of the vehicle body 10 when the sliding door 12 is opened and closed. The pressure ratio with the air chamber 44c is calculated, and the head side air chamber 44
When the opening of the sliding door 12 is detected by increasing the air pressure at b, the position of the electromagnetic switching valve 54 is switched to supply air from the rod side air chamber 44c to the head side air chamber 44b. Conversely, when the CPU 58 detects the start of closing the sliding door 12 due to an increase in the air pressure in the rod side air chamber 44c, it switches the position of the electromagnetic switching valve 54 to direct air from the head side air chamber 44b to the rod side air chamber 44c. supply Next, when the sliding door 12 slides in the opening or closing direction and the air pressure in the head side air chamber 44b or the rod side air chamber 44c becomes too large, the CPU 58 controls the electromagnetic switching valve 54 and the variable orifice 56,57. , air is returned to the compressed air supply means 52 from the head side air chamber 44b or the rod side air chamber 44c to maintain the original pressure ratio. In this way, when sliding the sliding door 12 upward along the inclination direction, the door opening/closing force of the sliding door 12 can be reduced, and when sliding the sliding door 12 downward, the door opening/closing force can be increased.

In the second embodiment, the opening/closing force of the sliding door 12 is variably controlled by air pressure, but instead of this, the opening/closing force of the sliding door 12 may be variably controlled by hydraulic pressure.

FIGS. 4(a) and 4(b) show a sliding structure for a vehicle according to a third embodiment of the present invention. Near the lower end of the opening 10a of the vehicle body 10, a pair of upper and lower weight holders 60.61, which are guide rails, are provided opposite each other. keeping. Upper weight holder 60
A weight stopper 64 is provided in the through hole 60a drilled in the
is inserted so that it can move up and down, and this weight stopper 64
When the tip of the weight 62 engages with the hole 62a in the upper part of the weight 62, the weight 62 stops sliding. A ring-shaped wire holder 66 having teeth on the inner and outer peripheral surfaces is rotatably held at the front end of the weight 62, and the outer teeth of the wire holder 66 are attached to a spur gear 70 fixed to the rotating shaft of a motor 68. It also meshes with a stopper 72 which is rotated by a switch of the motor 68 and a reverse relay. Further, inside the wire holder 66, three pawls 74 having teeth on the outer circumferential surface are rotatably supported by the weight 62, and the teeth of these pawls 74 and the inner circumferential teeth of the wire holder 66 are rotated. They mesh together. Furthermore, an annular wire 76 is inserted inside the pawl 74, and this wire 76 is connected to a roller 78 disposed at a distance from the vehicle body 10.
It is held movably in the circumferential direction by. wire 7
The other end of a bracket 80, one end of which is fixed to the inner surface of the sliding door 12, is attached to a suitable position in the circumferential direction of the wire 76, and the wire 76 moves in the circumferential direction in conjunction with the sliding of the sliding door 12.

Weight holders 60, 61 and weight 62 explained above
, weight stopper 64, wire holder 66, motor 68, spur gear 70, stopper 72, pawl 74, wire 76, roller 78, and bracket 80 constitute an operating force variable means. The door opening/closing force of the sliding door 12 is variably controlled. That is, when the inclination sensor 14 detects the inclination state of the vehicle body, the motor 68 rotates, and the wire holder 66 also rotates via the spur gear 70, and the pawl 74 engages the wire 76.
grasp. In this state, the motor 68 stops rotating and the stopper 72 locks the wire holder 66.
The weight 62 becomes movable in the direction opposite to the sliding direction of the sliding door 12. Next, when the sliding door 12 is opened, the door switch 16 detects this, and the weight stopper 64 unlocks the weight 62. As a result, the weight 62 biases the sliding door 12 upwardly when the slope is uphill, and biases the sliding door 12 downwardly when the slope is downhill due to the action of gravity. The door opening/closing force can be variably controlled.

(Effects of the Invention) As explained above, according to the vehicle sliding structure according to the present invention, the sliding operating force when the vehicle is parked on a slope is the same as the sliding operating force when the vehicle is parked on a flat area. To prevent a sliding door from opening or closing unexpectedly even when the vehicle is parked in the parking lot, and to open and close the sliding door without requiring particularly large force.

[Brief explanation of the drawing]

FIGS. 1(A) to 1(G) show a first embodiment of the vehicle sliding door structure according to the present invention, and FIG. 1(A) is an overall perspective view;
(b) is a sectional view showing the sliding door in the closed state, (c)
and (e) is a perspective view of a part, (d) is an explanatory diagram of the moving state of the sliding door, (f) is a sectional view showing the sliding door in an open state, (g) is a perspective view of a part of the vehicle body, and (g) is a perspective view of a part of the vehicle body. figure(
A) to (D) show examples of changes to the sliding structure of the above vehicle, where (A) is a partially cutaway perspective view of the whole, (B) is a partial perspective view, and (C) shows the open state of the sliding door. A sectional view showing,
(D) is a partial sectional view, FIGS. 3 (A) to (C) show a second embodiment of the sliding door structure of the above vehicle, and (A)
is a perspective view showing the whole, (b) is an exploded perspective view of a part, (
C) is an air pressure circuit diagram, Figures 4 (A) and (B) show a third embodiment of the sliding door structure of the above vehicle, (A) is an overall perspective view, and (B) is a partial exploded view. FIG. 10...Vehicle body, 12...Sliding door, 14...
Inclination sensor, 16... Door switch, 20... Motor, 22... Fluid clutch, 24... Gear, 26
... Gear rail, 44 ... Air cylinder, 46
．． 47... Pressure sensor, 48... Air flow path, 50
... Solenoid on-off valve, 51 ... Air passage, 52 ... Compressed air supply means, 54 ... Solenoid switching valve, 56.57.
・Variable orifice, 58...CPU, 60.61・
...Weight holder, 62...Weight, 64...
・Weight stopper, 66...Wire holder, 6
8...Motor, 70...Spur gear, 72 Stopper,
74...Claw, 76...Wire, 78...Roller,
80...Bracket.

Claims (1)

[Claims] (1) In a vehicle equipped with a sliding door that covers an opening formed in the side of the vehicle body so that it can be opened and closed by sliding in the front and back direction, a tilt sensor that detects the tilt state of the vehicle body in the front and rear direction, and this tilt sensor The door opening/closing force of the sliding door is varied so that the sliding operating force is small when the sliding door is slid upward along the inclination direction, and the sliding operating force is large when the sliding door is slid downward. A sliding door structure for a vehicle, characterized in that it is equipped with an operating force variable means for controlling.