JP3486980B2 - Electric control for vehicle doors and auxiliary steps - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle for getting on and off vehicles such as infants, the elderly and the disabled, and for carrying luggage and wheelchairs into a vehicle. A vehicle door for providing an auxiliary step at the entrance of the vehicle for facilitating the opening and closing of the auxiliary step in conjunction with opening and closing of a door provided at the entrance and exit, and an electric control device for the auxiliary step. About. 2. Description of the Related Art Conventionally, this type of apparatus has a step control circuit for issuing and storing an auxiliary step in conjunction with a door control circuit for controlling opening and closing of a door. A release switch that selectively releases the interlocking operation is provided.If the auxiliary step is unnecessary, or if the auxiliary step cannot be performed even if the door is opened due to the surroundings of the vehicle, the release switch is selected to operate the step. The control circuit does not issue or store auxiliary steps in conjunction with the door control circuit. [0003] However, in the above-mentioned conventional apparatus, the release switch is operated in a state where the auxiliary step is issued, and the interlocking operation of the auxiliary step with respect to the opening / closing operation of the door is released. After that, if the door is instructed to be closed by the open / close switch, the door will be closed with the auxiliary step issued, and the vehicle may be started with the same step issued. is there. SUMMARY OF THE INVENTION The present invention has been made to address the above-described problem. It is an object of the present invention to permit the interlocking operation of an auxiliary step for opening and closing a door and release of the interlocking operation, and to allow the vehicle to remain in the auxiliary step. It is an object of the present invention to provide an electric control device for a vehicle door and an auxiliary step in which the vehicle is not started. [0005] In order to achieve the above object, the constitution of the present invention is characterized by an opening / closing switch for instructing opening and closing of the door, and opening and closing of the door by the opening / closing switch. Door control circuit that opens and closes the door by controlling the door opening and closing mechanism when each is instructed, and controls the stepping mechanism in conjunction with the opening and closing of the door to issue and store auxiliary steps. An electric control device for a vehicle door and an auxiliary step having a step control circuit, and a release switch for selectively releasing an interlocking operation of the auxiliary step with respect to opening and closing of the door;
When the release of the interlocking operation is selected by the release switch, the step control circuit is controlled to prohibit the output of the auxiliary step interlocked with the opening of the door and to store the auxiliary step independently of the instruction to close the door by the open / close switch. And a release control circuit for causing the release control circuit. In the present invention constructed as described above, the door is opened and closed by the open / close switch unless the release switch is selected to release the interlocking operation of the auxiliary step for opening and closing the door. When each instruction is issued, the door control circuit controls the door opening / closing mechanism to open and close the door, and at the same time, the step control circuit controls the stepping mechanism to issue or store auxiliary steps. I do. Therefore, since the auxiliary steps are prepared at the entrance and exit simultaneously with opening of the door of the vehicle, getting on / off of the vehicle and loading of the luggage are facilitated, and the occupant can withdraw and store the auxiliary steps. On the other hand, if release of the interlocking operation of the auxiliary step for opening and closing the door is selected by the release switch, the release control circuit controls the step control circuit to prohibit the auxiliary step from being performed in conjunction with the opening of the door. Therefore, even when the door is opened, the auxiliary step is not issued and is kept in the stowed state, so if the auxiliary step is unnecessary, if the door cannot be opened even if the door is opened due to the situation around the vehicle, etc. I can deal with it. When release of the interlocking operation is selected by the release switch as described above, the release control circuit controls the step control circuit to store the auxiliary step regardless of the instruction to close the door by the open / close switch. Therefore, in the released state of the interlocking operation, the auxiliary step is always stored, so that it is possible to prevent the vehicle from starting with the auxiliary step being issued. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG.
FIG. 2 is a perspective view of the vicinity of the entrance 10 of the vehicle when the door 20 is closed, and FIG. The door 20 is formed by connecting two door members 20a and 20b having a width approximately half the width of the frontage of the entrance 10 of the vehicle by a hinge 21, and can be bent along a vertical line substantially at the center in the width direction. Is configured. One end of the door 20 is rotatably supported on one inside end of the entrance 10 of the vehicle via a pin 22 so as to be rotatable around a vertical axis, and the other end is provided at the entrance 10 in the direction of the frontage. Guide rail 11
Are supported so as to be movable only in the same frontage direction via a guide roller 24 fitted so as to be displaceable along. The door 20 is rotated by a door opening / closing mechanism 30 and simultaneously folded and opened / closed. As shown in FIGS. 2 to 4, the door opening / closing mechanism 30 includes an electric motor 32 incorporated in a case 31 disposed on the side of the entrance 10 in the vehicle interior. Electric motor 32
Output shaft of the rotary shaft 33 via a reduction mechanism (not shown).
And one end of an arm 34 is fixed to the rotating shaft 33. One end of a link 35 is connected to the other end of the arm 34 so as to be rotatable about a vertical axis, and the other end of the link 35 is assembled to the inner surface of the door member 20a so as to be rotatable about the vertical axis. A cam 36 is fixed on the outer periphery of the rotating shaft 33, and a full-open detection switch 61 and a full-close detection switch 62 that operate according to the rotation position of the cam 36 are provided on the side of the cam 36. Full-open detection switch 6
1 is always on and is off only when the door 20 is fully opened. The fully closed detection switch 62 is always on and the door 20
Turns off only when is fully closed. As shown in FIGS. 1, 5 and 6, at the entrance 10 of the vehicle, the vehicle is stored directly below a main step 12 which is provided at the entrance 10 and forms a part of the floor of the vehicle. At the same time, there is provided an auxiliary step 40 which is extruded diagonally downward and is fixed to a height position between the ground and the main step 12 outside the vehicle. The auxiliary step 40 includes a frame 41 formed in a U-shape and a reinforcing member 42 having both ends connected near the center of both side pieces of the frame 41, and a frame 41 at a portion outside the reinforcing member 42.
Is provided with a plate 43 covering the. The auxiliary step 40 is pushed out and stored by a step-out mechanism 50 assembled below the main step 12. The step-out mechanism 50 includes a pair of first links 51 a and 5, the lower ends of which are rotatably attached to the intermediate portions of both side pieces of the frame 41.
1b, and a pair of second links 52a, 52b having lower ends rotatably assembled to the ends of both side pieces of the frame 41. The first link 51a, 51b and the second link 52a, 52b form a parallel link, and their upper ends are rotatably mounted on a pair of brackets 53a, 53b fixed to the lower surface of the main step 12. It is assembled. The first and second links 51a, 51
The link mechanism constituted by b, 52a, and 52b is driven by an electric motor 55 housed in a case 54 provided below the main step 12.
An output shaft of the electric motor 55 is connected to a rotation shaft 56 via a speed reduction mechanism (not shown).
One end of 7 is fixed. One end of a link 58 is connected to the other end of the arm 57 so as to be rotatable around an axis along the front-rear direction of the vehicle, and the other end of the link 58 is connected to a side surface of the reinforcing member 42 around an axis along the front-rear direction of the vehicle. It is rotatably mounted on. As shown in FIG. 4, a cam 59 is fixed on the outer periphery of the rotating shaft 56, and a step-out detection switch 63 and a storage detection which are operated in accordance with the rotation position of the cam 59 are provided on the sides of the cam 59. A switch 64 is provided. The stepping out detection switch 63 is always on and is turned off only when the pushing out of the auxiliary step 40 is completed. The storage detection switch 64 is always on, and is turned off only when the storage of the auxiliary step 40 is completed. Next, an electric control device for controlling the opening and closing of the door 20 and for controlling the access of the auxiliary step 40 will be described. The device is shown in a block diagram in FIG. Switches 7 for relays 71 and 72 are provided at both ends of an electric motor 32 for opening and closing the door 20.
1a and 72a are respectively connected. The changeover switches 71a and 72a are always in the illustrated state, and both ends of the electric motor 32 are grounded. When the coils 71b and 72b in the relays 71 and 72 are energized, they are switched from the illustrated state so that both ends of the electric motor 32 are respectively connected. Connect to battery 73. One end of each of the coils 71 b and 72 b is connected to an open-side fixed contact and a closed-side fixed contact of an open / close switch 74 for instructing opening and closing of the door 20, and a movable contact of the switch 74 is connected to a battery 73 via an ignition switch 75.
It is connected to the. The other ends of the coils 71b and 72b are respectively a full-open detection switch 61 and a full-close detection switch 62.
Grounded. The full-open detection switch 61, the full-close detection switch 62, and the relays 71, 72
Constitute a door control circuit for controlling the opening and closing of the door 20. The changeover switches 81a and 82a of the relays 81 and 82 are connected to both ends of the electric motor 55 for taking the auxiliary step 40 in and out. The changeover switches 81a and 82a are always in the illustrated state, and both ends of the electric motor 55 are grounded.
When the coils 81b and 82b are energized, the state is switched from the illustrated state, and both ends of the electric motor 55 are connected to the battery 73, respectively. One end of the coil 81b is connected to the non-inverting output terminal Q of the RS flip-flop circuit 83,
The other end of the coil 81b is a step-out detection switch 63
Grounded. One end of the coil 82b is connected to the inverted output terminal of the flip-flop circuit 83, and the other end of the coil 82b is grounded via the storage detection switch 64. The set input S of the flip-flop circuit 83 is connected to the open-side fixed contact of the open / close switch 74,
The reset input R of No. 3 is connected to the closed fixed contact of the open / close switch 74 via the diode 84. Note that these step-out detection switch 63, storage detection switch 64, relays 81 and 82, and flip-flop circuit 83
Constitute a step control circuit for controlling the insertion and removal of the auxiliary step 40. A changeover switch 85a of a relay 85 constituting a release control circuit is inserted in a conductor connecting the open-side fixed contact of the open / close switch 74 and the set input S of the flip-flop circuit 83. Switch 85a
Is always on, and turns off when the coil 85b of the relay 85 is energized. One end of the coil 85b is connected to the battery 73 via a release switch 86 and an ignition switch 75 for releasing the interlocking operation of the auxiliary step 40 for opening and closing the door 20. The other end of the coil 85b is grounded. The open / close switch 74 and the release switch 86 are arranged near the driver's seat. Next, the operation of the embodiment configured as described above will be described. First, an auxiliary step 40 for the door 20
A case where the interlocking operation is not released, that is, a case where the release switch 86 is turned off will be described. When the open / close switch 74 is operated in the state where the ignition switch 75 is turned on, the door 20 is closed, and the auxiliary step 40 is stored, the battery 73 causes the ignition switch 75 and the open / close switch 74 to operate. The relay 71 is connected to one end of a coil 71b of the relay 71. At this time, since the full-open detection switch 61 is maintained in the ON state, a current flows through the coil 71b, and the changeover switch 71a is switched from the illustrated state. The electric motor 3 is switched by the changeover of the changeover switch 71a.
7, a current flows in the direction of the arrow in FIG. 7, and the motor 32 rotates forward. The forward rotation of the electric motor 32 is transmitted to the arm 34 via the rotation shaft 33, and the arm 34 is rotated in the direction of the arrow in FIG. 3, so that the door member 20a of the door 20 is connected to the pin 12 via the link 35. While being turned around,
The guide roller 24 of the door member 20b is
Move along. That is, the door 10 is turned and bent at the same time as the door 10 starts to open the entrance 10. When the door 20 is opened and fully opened, the full open detection switch 61 is turned off. When the full-open detection switch 61 is turned off, the coil 71 of the relay 71 is turned off.
Since the energization of b is released and the changeover switch 71a returns to the state of FIG. 7, the energization of the electric motor 32 is also released. Therefore, the opening operation of the door 20 by the electric motor 32 is stopped, and the door 20 is kept in the fully opened state. If the switching operation of the open / close switch 74 to the open side is released during the opening operation of the door 20, the energization of the coil 71b is released, and the opening operation of the door 20 as described above is interrupted halfway. . On the other hand, the changeover switch 85 of the relay 85
Since “a” is kept on by the non-energization of the coil 85 b, a high-level signal is supplied to the set input S of the flip-flop circuit 83 by the switching operation of the open / close switch 74 to the open side. As a result, the flip-flop circuit 83 is set and its non-inverted output Q becomes high level, so that the coil 81b of the relay 81 is also energized. At this time, since the auxiliary step 40 is housed and the step-out detection switch 63 is kept on, a current flows through the coil 81b and the changeover switch 8
1a is switched from the illustrated state. By the switching of the changeover switch 81a, a current flows through the electric motor 55 in the direction of the arrow in FIG. 7, and the motor 55 rotates forward. The forward rotation of the electric motor 55 is transmitted to the arm 5 via the rotary shaft 56.
The arm 57 is rotated in the direction of the arrow in FIG. Thus, the first and second links 51a, 51
Due to the action of b, 52a, 52b, the link 58 is pushed to the left in FIG. 6, and the auxiliary step 40 starts to be pushed downward from the position shown by the two-dot chain line in FIG. When the auxiliary step 40 moves to the solid line state in FIG. 6, the step detection switch 63 is turned off. When the step-out detection switch 63 is turned off, the energization of the coil 81b of the relay 81 is released and the changeover switch 81a returns to the state shown in FIG. 7, so that the energization of the electric motor 55 is also released. Therefore, the pushing operation of the auxiliary step 40 by the electric motor 55 is stopped, and the step 40 is set at a height position outside the vehicle side and between the ground and the main step 12. Note that even if the switching operation of the open / close switch 74 to the open side is released during the pushing operation of the auxiliary step 40, the flip-flop circuit 83 is kept in the set state, and the energization to the coil 81b is released halfway. Never
The auxiliary step 40 is pushed to the final position as described above. As described above, when the opening of the door 20 is instructed, the door 20 is automatically opened, and at the same time, the auxiliary step 40 is automatically issued and prepared at the entrance 10 so that the auxiliary step Withdrawal work by 40 occupants is omitted, and getting on / off of the vehicle and carrying in of luggage are facilitated. On the other hand, when the open / close switch 74 is operated to the closed side in the state where the door 20 is opened and the auxiliary step 40 is pushed out, the battery 73 is connected via the ignition switch 75 and the open / close switch 74. Connected to one end of coil 72b of relay 72. At this time,
Since the fully closed detection switch 62 is kept on,
A current flows through the coil 72b, and the changeover switch 72a is switched from the illustrated state. This changeover switch 7
By switching 2a, a current flows through the electric motor 32 in the direction opposite to the direction of the arrow in FIG. 7, and the motor 32 rotates in the reverse direction. The reverse rotation of the electric motor 32 is transmitted to the arm 34 via the rotary shaft 33, and the arm 34 is rotated in the direction opposite to the direction of the arrow in FIG. 3, so that the door 20 is extended in the opposite direction to the case of the opening. The entrance 10 starts to be closed. When the door 20 is closed and fully closed, the fully closed detection switch 62 is turned off. When the full-close detection switch 62 is turned off, the coil 72 of the relay 72 is turned off.
Since the energization of b is released and the changeover switch 72a is returned to the state of FIG. 7, the energization of the electric motor 32 is also released. Therefore, the closing operation of the door 20 by the electric motor 32 is stopped, and the door 20 is kept in the fully closed state. During the closing operation of the door 20, if the switching operation of the open / close switch 74 to the closed side is released, the coil 7
Since the energization of 2b is released, the closing operation of the door 20 as described above is interrupted halfway. A high level signal is supplied to the reset input R of the flip-flop circuit 83 via the diode 84 by the switching operation of the open / close switch 74 to the closed side. As a result, the flip-flop circuit 83 is reset and its inverted output becomes high level.
The coil 82b of the relay 82 is also energized. At this time, the auxiliary step 40 is pushed out and the storage detection switch 6
4 is maintained in the ON state, a current flows through the coil 82b, and the changeover switch 82a is switched from the illustrated state. By the switching of the changeover switch 82a, a current flows through the electric motor 55 in the direction opposite to the direction of the arrow in FIG. 7, and the motor 55 rotates in the reverse direction. This electric motor 5
The reverse rotation of 5 is transmitted to the arm 57 via the rotating shaft 56, and the arm 57 is rotated in the direction opposite to the direction of the arrow in FIG. Thereby, the links 51a, 51b, 52a, 5
Due to the action of 2b and 58, the auxiliary step 40 starts to be stored below the main step 12 from the position shown by the solid line in FIG. When the auxiliary step 40 moves to the position indicated by the two-dot chain line in FIG. 6, the storage detection switch 64 is turned off. When the storage detection switch 64 is turned off, the relay 8
Since the energization of the second coil 82b is released and the changeover switch 82a returns to the state shown in FIG. 7, the energization of the electric motor 55 is also released. Therefore, the storage operation of the auxiliary step 40 by the electric motor 55 is stopped, and
0 is stored below the main step 11. During the storage operation of the auxiliary step 40, the open / close switch 74
Even if the switching operation to the close side is released, the flip-flop circuit 83 is kept in the reset state, as in the case described above, so that the energization to the coil 82b is not released in the middle, and the auxiliary step 40 Moves to the storage position indicated by the two-dot chain line in FIG. 6 as described above. As described above, when the closing of the door 20 is instructed, the door 20 is automatically closed and the auxiliary step 40 is automatically stored.
The occupant's storage work is omitted. Next, an auxiliary step 40 for the door 20
Will be described, that is, the case where the release switch 86 is turned on. In this case, a voltage is applied to the coil 85b of the relay 85 from the battery 73 via the ignition switch 75 and the release switch 86, and a current flows through the coil 85b, so that the switch 85a is turned off. Therefore, the connection between the open-side fixed contact of the open / close switch 74 and the set input S of the flip-flop circuit 83 is disconnected, so that the flip-flop circuit 83 is set to the set state even if the occupant switches the open / close switch 74 to the open side. Never.
Therefore, even if the door 20 is opened, the auxiliary step 40
Is kept in the stowed state and cannot be pushed out. Therefore, if the auxiliary step 40 is not necessary, the door 20 may be removed from the situation around the vehicle.
, The auxiliary step 40 cannot be pushed out. On the other hand, when the release switch 86 is turned on as described above, a high-level signal is supplied to the reset input R of the flip-flop circuit 83, so that the flip-flop circuit 83 is reset and its inverted output goes high. Set to level. Therefore, if the auxiliary step 40 is not in the storage state and the storage detection switch 64 is turned on, the coil 82b of the relay 82 is energized and the changeover switch 82a is switched, and the electric motor 55 is turned in the direction opposite to the direction of the arrow in FIG. Direction current flows. As a result, the auxiliary step 40 is stored as described above, so that when the release switch 86 is turned on, the step 40 is always stored. Even if the release switch 86 is turned on,
Since the diode 84 prevents the coil 72b from being energized, the door 20 is not closed by turning on the release switch 86. As described above, when the interlocking operation of the auxiliary step 40 with respect to the door 20 is released by the release switch 86, the auxiliary step 40 is always stored regardless of the instruction to close the door 20 by the open / close switch 74. It is possible to prevent the vehicle from starting while the steps are being performed.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of the vicinity of an entrance / exit of a vehicle according to an embodiment of the present invention, as viewed from outside the vehicle with a door opened. FIG. 2 is a perspective view of the vicinity of the same entrance as seen from the passenger compartment with a door closed. FIG. 3 is a plan view of the vicinity of the entrance with the door closed. FIG. 4 schematically shows the arrangement of a full-open detection switch and a full-close detection switch for detecting a fully-opened and fully-closed state of a door (or a step-out detection switch and a storage detection switch for detecting a state in which an auxiliary step is issued and a stored state). FIG. FIG. 5 is a plan view showing an auxiliary step and a step-out mechanism. FIG. 6 is a side view showing the auxiliary step and the step-out mechanism. FIG. 7 is a block diagram of an electric control device for controlling opening / closing of a door and setting of an auxiliary step. [Description of Signs] 10: entrance / exit, 20: door, 30: door opening / closing mechanism, 32
... Electric motor, 40 ... Auxiliary step, 50 ... Step-out mechanism, 55 ... Electric motor, 61 ... Fully open detection switch,
62: Fully closed detection switch, 63: Step out detection switch, 64: Storage detection switch, 71, 72: Relay,
74 open / close switch, 81, 82 relay, 83 flip-flop circuit, 84 diode, 85 relay
86 ... Release switch.

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B60R 3/00 B60J 5/06 E05B 65/20 E05F 15/10

Claims (1)

(57) [Claim 1] A door opening / closing mechanism for opening / closing a door provided at a doorway of a vehicle, and a step-out mechanism for taking out or storing an auxiliary step provided at the doorway. And an open / close switch for respectively instructing opening and closing of the door, and controlling the door opening / closing mechanism when the opening / closing of the door is instructed by the on / off switch to open and close the door. A vehicle door and an auxiliary step, comprising: a door control circuit for closing; and a step control circuit for controlling the stepping mechanism in conjunction with opening and closing of the door to output and store an auxiliary step. A release switch for selectively canceling the interlocking operation of the auxiliary step for opening and closing the door, and the interlocking operation by the canceling switch. Release control circuit that controls the step control circuit to prohibit the auxiliary step from being interlocked with the opening of the door when the release of the door is selected, and stores the auxiliary step independently of the door closing instruction by the open / close switch. And an electric control device for a vehicle door and an auxiliary step.