JP2012097442A - Electric door closing device for vehicle entrance door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a comfortable in-vehicle environment by eliminating clearance between door tip rubbers on fully-closed right and left entrance doors and eliminating entry of noises and rain water during running.SOLUTION: Use of an electromagnetic brake 17, which is directly coupled to a motor 15, on a locking device enables a motor shaft 16 to be controlled at an arbitrary angle, thus making it possible to lock entrance doors 1a, 1b at an arbitrary position that are coupled to the motor shaft 16 via a ball screw 9. A one-way clutch 19 (a needle roller bearing rotatable only in one direction) is used on a coupling part between the motor shaft 16 and an electromagnetic brake shaft 18 to enable the motor shaft 16 to be rotated only in the closing direction even after locking. Thus, the clearance between door tip rubbers on fully-closed right and left entrance doors can be eliminated using inertia force of the entrance doors, even in a case that the timing of locking is slightly early.

Description

The present invention relates to an electric door closing device for a vehicle entrance door.

The present invention is an electric door closing device that automatically opens and closes a vehicle entrance / exit door. When the door is locked when fully closed, the entrance / exit door can be locked at an arbitrary position. The door rubber gap between the left and right doors is eliminated.
By using an electromagnetic brake directly connected to the motor in the locking device, it becomes possible to brake the motor shaft at an arbitrary angle. As a result, the passenger door connected to the motor shaft via a ball screw can be installed at an arbitrary position. It is an electric door closing device that can be locked. In addition, by using a one-way clutch (a needle roller bearing that can rotate in only one direction) at the connection between the motor shaft and the electromagnetic brake shaft, the motor shaft can only rotate in the door-closing direction even after locking. The door can also move only in the closing direction, and the inertia force of the passenger door can be used to eliminate the door rubber gap between the left and right doors after full closure even when the timing of the lock is slightly early I can do it.

A conventional locking device for an electric door closing device will be described with reference to FIG. The conventional locking device is provided with a wedge insertion hole left 25a and a wedge insertion hole right 25b provided at the upper part of the entrance door left 1a and the entrance door right 1b. The movable wedge left 27a and the wedge right 27b were lowered and inserted into the wedge insertion hole left 25a and the wedge insertion hole right 25b, and the entrance door left 1a and the entrance door right 1b were locked.
For this reason, the wedge insertion hole left 25a and the wedge insertion hole right 25b provided at the upper part of the entrance door left 1a and the entrance door right 1b need to be inserted and removed from the wedge left 27a and the wedge right 27b. It was necessary to open a lot. The gap 28 due to the dimensional difference is a backlash when the door is locked, and causes a gap generated in the door rubber portions of the left and right doors when the passenger door is fully closed.
In addition, in order to reduce the gap, laborious adjustment is necessary. Japanese Patent Laying-Open No. 2003-148042 (see, for example, Patent Document 1) also describes a locking device similar to the above.

JP 2003-148042 A

  The present invention relates to an electric door closing device that automatically opens and closes a passenger door for a vehicle. By devising a door locking device and its installation location, the door can be locked at an arbitrary position. It is to eliminate the door rubber gap between the left and right doors after full closure.

According to the first aspect of the present invention, in the electric door closing device for a vehicle entrance / exit door, an electromagnetic brake directly connected to a motor shaft for opening and closing the vehicle entrance / exit door is disposed, and the motor shaft is arranged at an arbitrary angle. The vehicle entrance / exit door connected to the motor shaft via a ball screw can be locked at an arbitrary position, and left and right after the vehicle entrance / exit door is fully closed. It is characterized in that the door rubber gap between the doors can be eliminated.

  In other words, in an electric door closing device that automatically opens and closes a vehicle entrance / exit door, it is possible to brake the motor shaft at an arbitrary angle by using an electromagnetic brake directly connected to the motor in the locking device. The door connected to the motor shaft via a ball screw can be locked at an arbitrary position. Furthermore, since the door can be locked at an arbitrary position, the door can be locked at a position where the door is fully closed, so that the door rubber gap between the left and right doors after the door is fully closed can be eliminated. In addition, time-consuming adjustments are unnecessary.

According to the invention of claim 2, when the vehicle entrance / exit door is locked, a one-way clutch (a needle-like shape that can rotate only in one direction) is connected to a connecting portion between the electromagnetic brake shaft and the motor shaft provided in the electromagnetic brake. Roller bearings), and after locking, the motor shaft can only be rotated in the door closing direction, and the vehicle passenger door can be moved only in the closing direction. By utilizing inertial force, the door rubber gap between the left and right doors after the vehicle entrance / exit door is fully closed can be eliminated even when the timing of locking is slightly early.

That is, in an electric door closing device that automatically opens and closes a vehicle entrance door, when applying braking force to a motor shaft with an electromagnetic brake, the right and left doors are locked even when the timing is not met and the door is locked immediately before the door is fully closed. One way clutch (needle roller bearing that can rotate in only one direction) is used at the connection between the motor shaft and the electromagnetic brake shaft to eliminate the gap between the door ends.
In addition, by using a one-way clutch (needle roller bearing that can rotate in only one direction) at the connection between the motor shaft and electromagnetic brake shaft, the motor shaft can only rotate in the door closing direction even after locking. The door can also move only in the closing direction, and the inertia rubber force of the passenger door can be used to eliminate the door rubber gap between the left and right doors even when the timing of the locking is slightly early. .

According to the present invention, the following effects can be obtained.
(1) By using an electromagnetic brake directly connected to the motor for the door locking device, it becomes possible to brake the motor shaft at an arbitrary angle. As a result, the door connected to the motor shaft via a ball screw can be used. It can be locked at an arbitrary position, and it becomes possible to eliminate the door rubber gap between the left and right doors after the door is fully closed without requiring troublesome adjustment. (Invention of Claim 1)
(2) Use a one-way clutch (needle roller bearing that can rotate in only one direction) at the connection between the motor shaft and electromagnetic brake shaft, and only allow the motor shaft to rotate in the door closing direction even after locking. The door can only move in the closing direction, and the inertia force of the passenger door can be used to eliminate the door rubber gap between the left and right doors after full closure even when the locking timing is slightly early. Can do. (Invention of Claim 2)

1 is a structural diagram of an electric door closing device of the present invention. It is a figure which shows the electric door closing apparatus which uses the conventional locking device.

  The purpose of eliminating the door rubber gap between the left and right doors after full closure was realized by devising the door locking device and its installation location in an electric door closing device that automatically opens and closes the vehicle doorway.

An embodiment of the present invention will be described with reference to FIG. FIG. 1 is a structural diagram of an electric door closing device of the present invention for automatically opening and closing a vehicle entrance / exit door.
The electric door closing device is connected by a piston shaft 3 via a passenger door left 1 a and a door connecting metal left 2 a and is incorporated in a cylinder 4. The door connecting bracket left 2 a is also connected to the connecting rod left 5 a, and the connecting rod left 5 a is attached to the upper side of the belt 6. The belt 6 is stretched between the left and right pulleys 7a and 7b. When the belt 6 moves from the upper side to the lower side, the moving direction changes by 180 ° and moves in the direction opposite to the upper side. A connecting rod right 5b is attached to the lower side of the belt 6, and the connecting rod right 5b is connected to the passenger door right 1b via a door connecting metal right 2b. In FIG. 1, when the piston shaft 3 moves in the direction of entering the cylinder 4, the passenger door 1 a connected to it moves to the right, and the passenger gets on and off connected to the connecting rod right 5 b whose direction of movement is changed by 180 ° by the belt 6. The door 1b moves to the left, the gap between the left and right entrance doors is reduced, and the door is fully closed.
A ball nut 8 is fixed to the piston shaft 3, and a ball screw 9 combined with the ball nut 8 is inserted into the piston shaft 3, the left side is held in the piston shaft 3 by the sliding bearing 10, and the right side is a ball screw 9. The bearing 11 holds the cylinder support right 12. The cylinder 4 is supported by a cylinder support right 12 and a cylinder support left 13. The right end of the ball screw is connected to the left end of the motor shaft 16 of the motor 15 via a joint 14. The motor 15 is fixed to the cylinder support right 12 on the left side and to the electromagnetic brake 17 on the right side. The motor shaft passes through the electromagnetic brake shaft 17, and the right end thereof is connected to the electromagnetic brake 18 via the one-way clutch 19. The electromagnetic brake shaft 18 is in a braking state when the electromagnetic brake 17 is in the non-pressurized state and is held by the brake lining 20.

  When the electromagnetic brake 17 is pressurized by the electromagnetic brake wiring 22 from the controller 23, the opening / closing operation of the passenger door is released, and the brake is released, and a slight gap is created between the brake lining 20 and the disc part of the electromagnetic brake shaft 28. The brake shaft 28 and the motor shaft 16 can rotate in any direction. Next, when electric power is supplied from the controller 23 to the motor 15 through the motor wiring 21, the motor shaft 16 rotates and the rotation is transmitted to the ball screw 9 connected to the motor shaft 16 via the joint 14. The rotation of the ball screw 9 is converted into a reciprocating motion of the ball nut 8, and the reciprocating motion is caused by the piston shaft 3, the door connecting bracket left 2a, the connecting rod left 5a, the belt 6, the connecting rod right 5b, and the door connecting bracket right 2b. Are transmitted to the left and right passenger doors 1a and 1b to be opened and closed.

When the electromagnetic brake 17 is unpressurized by the electromagnetic brake wiring 22 from the controller 23, the lock of the passenger door is in a braking state, and the disc portion of the electromagnetic brake shaft 18 is sandwiched by the brake lining 20, The disk portion of the electromagnetic brake shaft 18 is held by the frictional force and cannot rotate. Due to the function of the one-way clutch 19, the motor shaft 16 connected to the electromagnetic brake shaft 18 via the one-way clutch 19 can rotate only in the direction in which the passenger door is closed, and cannot rotate in the direction in which the passenger door is opened. Therefore, the passenger door moves only in the closing direction.
Since the electromagnetic brake 17 is braked with the disc portion of the electromagnetic brake shaft 18 sandwiched between the brake linings 20, the electromagnetic brake 17 can be held at an arbitrary angle, that is, the passenger door connected thereto can be chained at an arbitrary position. In addition, since the electromagnetic brake shaft 18 and the motor shaft 16 are connected via a one-way clutch 19, the electromagnetic brake 15 is in a braking state and the inertia force of the passenger door is used even after the passenger door is locked. It is possible to operate the passenger door further in the closing direction.

  By using the electric door closing device of the present invention for the vehicle entrance / exit doors, it is possible to completely eliminate the door rubber gap between the left and right doors after the entrance / exit doors are fully closed, without requiring time-consuming adjustments. Therefore, it is possible to prevent noise and rainwater from entering the vehicle and provide a comfortable in-vehicle environment.

1a ··· Left door 1b ··· Right door 2a ··· Door left fitting 2b · · · Door fitting right 3 · · · Piston shaft 4 · · · Cylinder 5a · · · left rod 5b · · · right rod 6 ··· Belt 7a ... Pulley left 7b ... Pulley right 8 ... Ball nut 9 ... Ball screw
10 ･ ･ ･ Slide bearing
11… Ball bearings
12 Cylinder support right
13 …… Cylinder support left
14 ... Fittings
15 Motor
16 Motor shaft
17 Electromagnetic brake
18 Electromagnetic brake shaft
19 …… One-way clutch
20 ... Brake lining
21 Motor wiring
22 …… Electromagnetic brake wiring
23 Control device
24 ... Locking device wiring
25a …… Wedge insertion hole left 25b …… Wedge insertion hole right
26 ... Locking device
27a …… Wedge left 27b …… Wedge right
28 .. Clearance due to dimensional difference

Claims (2)

  In an electric door closing device for a vehicle entrance / exit door, an electromagnetic brake directly connected to a motor shaft for opening / closing drive of the vehicle entrance / exit door is disposed, and the motor shaft can be braked at an arbitrary angle, As a result, the vehicle entrance / exit door connected to the motor shaft via a ball screw can be locked at an arbitrary position, eliminating the door-end rubber gap between the left and right doors after the vehicle entrance / exit door is fully closed. An electric door closing device characterized in that it can be used.   When the vehicle doorway is locked, a one-way clutch (a needle roller bearing that can rotate in only one direction) is disposed at the connection between the electromagnetic brake shaft provided in the electromagnetic brake and the motor shaft. By enabling only the rotation of the motor shaft in the door closing direction after locking and allowing the vehicle entrance / exit door to move only in the closing direction, the inertial force of the vehicle entrance / exit door can be used to lock the door. 2. The electric door closing device according to claim 1, wherein the door-end rubber gap between the left and right doors after the vehicle entrance / exit door is fully closed can be eliminated even when the vehicle timing is slightly early.

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