JP3298727B2 - Operation mechanism of vehicle door open / close switch - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mechanism for controlling the opening and closing of a door for a vehicle, and more particularly to an improvement of a so-called sliding door type operating mechanism of a one-box car, a bus or the like, which moves forward and backward substantially in parallel with the side of a vehicle body. About.

[0002]

2. Description of the Related Art Vehicles such as one-box cars are often provided with a sliding door type door which opens and closes in a direction substantially parallel to the side of the vehicle body in order to secure a large-area entrance. Such sliding door-type doors include those that are manually opened and closed and those that are driven using a drive source such as a motor. The former is relatively frequently used in small one-box cars and personal use vehicles. On the other hand, the latter is often used for large vehicles such as buses. Also, as a sliding door type opening and closing door used for vehicles,
Not only a door that opens and closes an entrance and the like on the side of the vehicle, but also an automatic door that is provided inside a large vehicle such as an X-ray car or a camper.

[0003] Of these, an opening / closing door that is opened and closed using a drive source is supported so as to be able to advance and retreat along guide rails above and below an entrance or an elevating port, and an opening / closing device (door) using a motor as a drive source. Opening and closing by the engine)
During the opening and closing operation, both when closing and opening, make sure that the door does not hit the pillars (edges) on both sides of the doorway with excessive momentum.
Generally, a braking means is provided. The operation of the brake means will be described in a little more detail.
When closing the door, rotate the motor forward to move the door in the closing direction for safety and other reasons, stop the closing operation shortly before closing completely, then slowly close the door, and then close the door. A so-called electric control brake, which sometimes turns off the motor, is often used. On the other hand, when the door is opened, the motor is reversed to move the door in the opening direction, and when the door is completely opened, the motor is stopped. In this case, the braking means is often a mechanical brake.

FIG. 7 is a view showing a sliding door type opening / closing door using both the above-mentioned electrically controlled braking means and the mechanically applied braking means. The member 1 fixed to the door (not shown) includes A groove 1a extending in the vertical direction is provided, a cushion air cylinder 2 is fixed to a lower portion of the groove, and a pulley (roller) 3 is provided at an upper end of the rod 2a urged in the upward projecting direction. It is rotatably supported. The pulley 3 is mounted so that it can roll up and down while engaging with guide rails 1b provided on both side walls of the groove 1a, and one end of a first link 5 is pivotally supported on the shaft of the pulley 3. . The other end of the second link 7 having one end attached to the other end of the link 5 and an intermediate portion of the link 5 is connected to the unit body 6.
Is pivoted in place. As shown in the exploded view of the control unit main body in FIG. 8, the shaft 10 pivotally supported on the unit main body 6 side is connected to the first link 5 via the link piece 8, so that the shaft 10 is connected to the first link 5. The shaft 10 rotates in conjunction with the opening / closing operation of the door (not shown).

The driving force from the motor M (FIG. 9) provided on the unit body 6 is transmitted to the lower end of the second link 7,
The second link 7 serves as power for reciprocating the second link 7 in the solid line position and the dotted line position in FIG. By the rotation of the second link 7, the member 1 connected to the first link 5, that is, the door is opened and closed. As shown in FIG. 8, four cams 11, 12, 13, and 14 are coaxially integrated with the shaft 10 on the unit body 6 side supporting the other end of the second link 7, and the mounting angle of each cam is adjusted. , The limit switches 15, 16, 17, 18 are turned on and off. By the way,
The first cam 11 for operating the limit switch 15 (door open stop switch) is set so as to turn off the limit switch 15 about 15 to 20 mm before the door open stop position, and operates the limit switch 16 (door closed stop switch). The second cam 12 is approximately 15 to 20 m from the door stop position.
m, the limit switch 16 is set to be turned off, and the third cam 13 is moved by 200 to 250 degrees from the closed position.
The limit switch 17 (temporary stop switch) is set to be turned off at a position before mm. The fourth cam 14 (ON or OFF when the signal is closed) is set so that the limit switch 18 is operated 25 to 30 mm before the closed position. Display to notify the driver, etc.
It is connected to the notification means.

That is, since the cams 11 to 14 and the shaft 10 supporting the cams are interlocked with the operation of the links 5 and 7 which operate according to the opening and closing of the door, each cam operates according to the movement of the door. By turning on and off each switch, electrical control of the door can be performed. Further, when the door is closed, that is, when the member 1 is moved (to the left in FIG. 7), the cushion of the air cylinder 2 is operated shortly before the door is completely closed, and the door is closed by rotation of the motor. Since the momentum in the direction is reduced, the motor can be closed slowly, safely and without noise, and the power supply to the motor is turned off with the door completely closed.

In the case of using the opening / closing door having such a structure, only the braking means consisting of an electric brake can be arranged at the time of the opening operation because of installation space or the like. For example, the first switch 15 detects that the door is completely opened, the second switch 16 detects that the door is completely closed, and the switch 1
Reference numeral 7 is used for realizing the above-mentioned temporary stop, and a switch 18 is used as a switch for performing a display for notifying that the door is completely closed or opened. However, as described above, it is difficult to finely adjust the angle of the cam of the door opening / closing mechanism that performs electrical control using the cam. In other words, even if the mounting angle of the cam is slightly shifted,
The displacement of the door due to the displacement is considerable, and there is a problem that the safety is impaired.

Further, since the cams and switches are generally provided in the case of the unit, the adjustment must be performed by opening the unit case each time, so that the workability is deteriorated. was there. Further, when the cam is fixed to the shaft, the cam is fixed to the shaft by a set screw (immo screw) 20 shown in FIG. 8, but once fixed, the cam shaft is fixed again for fine adjustment. When trying again, since the surface of the shaft 10 is scratched by the screw 20, even if the position of the tip of the screw is shifted by fine adjustment, the screw tip falls into the scratch, and the angle of the cam is changed by the fine adjustment. There was a problem that it became impossible.

[0009]

SUMMARY OF THE INVENTION The present invention has been made in view of the above, and is directed to a cam mechanism for turning on and off a limit switch used to control the opening and closing operation of a sliding door that opens and closes a doorway of a vehicle. Another object of the present invention is to provide an easily adjustable door opening / closing mechanism by changing the position of each limit switch using an adjustment screw provided outside the unit case without opening the unit case.

[0010] To achieve the above object, the invention of claim 1 is provided.
Is a sliding door that opens and closes the entrances inside and outside the vehicle.
Vehicle equipped with a control unit that controls the opening and closing operation of the Ip door
In the operation mechanism of the dual-purpose door open / close switch, the control unit
Stops the door drive motor at least when the door is closed.
Door stop switch to close the door
Temporary to stop and then decelerate to move in the closing direction
Stop switch and stop the door drive motor when the door is completely opened
Door stop switches to operate and the contacts of these switches
One camshaft for ON / OFF operation
And a single cam rotatably supported by the
To sequentially activate the contacts of each switch when pressed
Are arranged for each switch and sandwich the rotation path of the cam.
And a switch arm disposed opposite to the switch arm.
Switches can be freely rotated through the inside of the above control unit
Screws individually supported by multiple screw rods supported by
Provided with a nut which is exposed outside the control unit.
Operate the end of the threaded rod and rotate the threaded rod in the forward / reverse direction.
The axial position of each switch that has been stopped
Is made variable. The invention of claim 2 is
In claim 1, the camshaft of the cam is connected to the door.
The camshaft is rotated by opening and closing the door
And rotating the cam. Claim 3
The present invention provides an operation mechanism of a vehicle door opening / closing switch including a control unit that controls an opening / closing operation of a sliding door type door that opens and closes an entrance provided inside and outside the vehicle, wherein the control unit is configured to contact at least when the door is completely closed. , A contact switch that switches just before the door closes, a door stop switch that switches the contact when the door is completely opened, a camshaft that rotates with the opening and closing operation of the door, and a switch of these switches. Contact ON, OF
A single cam rotatably supported by the camshaft for actuation and having an ax or hatchet shape, and a switch for each switch for sequentially operating the contacts of each switch when pressed by the cam. A switch arm that is disposed and disposed opposite to each other across the rotation path of the cam;
Wherein each of the switches has a nut individually screwed and supported by a plurality of screw rods rotatably supported through the inside of the control unit, and the screws exposed to the outside of the control unit. By operating the end of the rod and rotating the screw rod in the forward / reverse direction, the axial position of each switch that has been stopped from rotation is made variable.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the embodiments shown in the accompanying drawings. FIG. 1 is a plan view showing a schematic configuration of a door opening / closing device of the present invention, and FIG. 2 is a front vertical sectional view thereof. In the drawing, reference numeral 30 denotes a door opening / closing motor (door engine), 40 denotes a unit case, and 50 denotes a camshaft. It is configured to open and close. Further, a connecting shaft 52 that operates in conjunction with the movement of the door is attached to the camshaft 50. Therefore, when the door is operated, the camshaft 50 rotates with the movement of the door. Members such as a cam and a limit switch fixed to the camshaft are housed in the unit case 40, and a plurality of slits 71 are provided on side surfaces 70c and 70d of the frame 70 housed in the unit case 40, It is used as a means for preventing rotation of a limit switch support member described later.

An end of a second link 7 shown in FIG. 9 is fixed to an output shaft 30a of the door opening / closing motor 30. When the second link 7 is rotated, the door is also connected via the first link 5 shown in FIG. It will be driven to open and close. Alternatively, an endless timing belt may be provided at the entrance of the vehicle along the opening and closing direction, and one of the pulleys supporting the timing belt may be driven by the motor. In any case, the method for opening and closing the door according to the present invention is not limited.

FIGS. 3 and 4 are views showing the internal structure of the unit case 40 and side views thereof, and FIG. 5 is a single-piece view of a cam 60 used in the present invention. As is apparent from FIG. 5, the cam 60 has a shape like an ax or a hatchet, and a wide arm portion 64 is provided at a position slightly apart from the tip portion 62a of the main shaft 62 in the longitudinal direction of the main shaft 62. It is mounted orthogonally, and a hole 63 for mounting a camshaft is provided on the other end 62b. Further, the corners of the main shaft distal end 62a and the arm distal end 64a are chamfered.

The cam 60 thus constructed is supported and fixed to the camshaft 50 by bolts 50a.
As the camshaft 50 rotates, the camshaft 50 rotates so as to press a contact point of a limit switch described later. Unit case 40
A frame 70 is provided therein, and four screw rods 72, 73, 74 and 75 provided so as to penetrate the upper and lower surfaces 70a and 70b of the frame 70 are rotatably supported, and the upper end of each screw rod is provided. Minus groove 72a provided in the portion,
73a, 74a and 75a (see FIGS. 3, 4 and 1)
By inserting and rotating a tool such as a screwdriver into the unit case 40, each screw rod can be rotated from outside the unit case 40 and the frame 70. Further, since nuts 80, 81, 82, and 83 are screwed to the screw rods 72 to 75, each nut 8
Positions 0 to 83 can be individually adjusted.

A limit switch supporting member 90, 91, 92 and 93 having a threaded rod penetrated is fixed to each of the nuts. Projections 90a to 93a of the limit switch supporting members 90 to 93 are fixed to side surfaces 70c, 70d
And is used as a rotation preventing means of the limit switch support member. Also, each of the limit switch support members 90 to 9
3 is a limit switch 9 with a bolt nut 95
6, 97, 98 and 99 are fixed.

Therefore, by rotating each screw rod, the limit switches 96 to 99 move up and down together with the nut and the limit switch supporting member. Contact a, of the soluble僥性pressing the said contact switch arm b and the switch Ah <br/> roller portion c rotatably mounted to the distal end of the arm in each of the limit switches 96 to 99 are provided
The roller portions c face each other, and the cam 60 is located in the space facing each other. Therefore, Kamsha
When the cam 60 is rotated by the rotation of the shaft 50 , the limit switch roller portions 98c and 99c come into contact with the side surface of the arm portion 64 of the cam 60 to switch on and off, while the limit switch roller portions 96c and 97c are turned on and off.
The switch is turned on and off by contacting the main shaft tip 62a of the cam 60. That is, the contact timing of the contacts 96a to 99a can be adjusted according to the mounting height of each of the limit switches 96 to 99 and the rotation of the cam, and the electrical control of the open / close door can be performed by turning on and off the switches. It is possible.

FIG. 6 is a diagram showing an example of an electric circuit of the door opening / closing mechanism according to the present invention. In FIG. 6, SW1, SW2, S
W3 corresponds to each contact point of the limit switches 96 to 98. The reason why the fourth switch corresponding to the signal limit switch 99 is not shown is that the signal limit switch is not an essential component and may be inserted as needed. When the contact of the switch A is brought into contact with the OP when the door is closed, the voltage of the battery B turns on the transistor Tr1 and the transistor Tr2 for a predetermined time by the time constant circuit of the capacitor C1 and the resistor R1.

As a result, the contact of the relay 1 is turned on,
The voltage of the battery B is applied to the motor M, and the motor M rotates to the OPEN side. Thereafter, when the door is opened to a predetermined position, the cam switches the contact of the switch SW1 to the b side, so that the transistors Tr1 and Tr2 are turned off, the contact of the relay 1 is also opened, and the motor M stops.
In this case, a mechanical braking method using an air cylinder is used for the brake in the opening direction of the opening / closing door as in the related art.

Next, a case where the opened door is closed will be described. The contact of the open / close switch A in the driver's seat etc. is CL
Side, the transistors Tr3 and Tr4 are turned on for a predetermined time by a time constant circuit composed of the capacitor C2 and the resistor R2, whereby the contacts of the relay 2 are turned on, the motor M starts reverse rotation, and the opening / closing door closes. I do. Thereafter, when the door closes to a predetermined position, the cam switches the contact of the switch SW3 from the a side to the b side, and the base current of the transistor Tr3 is diverted to the capacitor C3,
Momentarily, the transistors Tr3 and Tr4 are turned off,
After the motor M stops and the capacitor C3 is charged, the transistors Tr3 and TR4 are turned on again, and the motor M restarts reverse rotation. Subsequently, when the door moves in the closing direction, the cam rotates with the movement of the door and the switch SW3
Contacts the contact a again, the contact of the switch SW2 also switches from the contact a to the contact b, and the transistor Tr
3, Tr4 and the relay 2 are turned off, the motor M is stopped, and the door is completely closed. The relays arranged above the relays 1 and 2 in FIG. 6 are unnecessary for realizing the operation of the present invention, and may be omitted.

As described above, in the door opening / closing mechanism of the present invention, a single cam is used, and the contact adjustment of the limit switch that contacts the cam can be easily performed. Also, the maintenance work is significantly simpler than the conventional one. The opening / closing mechanism of the present invention can be applied not only to an opening / closing door for an automobile but also to a sliding door of a building such as a train, a ship, an aircraft, and a house.

[0021]

According to the present invention, as described above, a single cam is used, and the limit switch is arranged so that the contact of the limit switch is interrupted at a desired position with the rotation of the cam. The height can be easily adjusted by rotating the screw rod protruding out of the unit case, so that the number of parts is small and fine adjustment can be easily performed. The cam is not fixed to the camshaft with a screw, but the bolt is screwed to the screw rod and fixed.Therefore, there is no damage to the camshaft, and it is necessary to repeat the switch contact adjustment many times. It has a remarkable effect in making it possible.

[Brief description of the drawings]

FIG. 1 is a plan view showing a schematic configuration of a door opening and closing device of the present invention.

FIG. 2 is a front vertical sectional view showing a schematic configuration of a door opening / closing device of the present invention.

FIG. 3 is a diagram showing an internal configuration of a unit case of the present invention.

FIG. 4 is a side view showing the internal configuration of the unit case of the present invention.

FIG. 5 is a diagram showing a cam of the present invention.

FIG. 6 is a diagram showing an example of an electric circuit of the door opening / closing mechanism according to the present invention.

FIG. 7 is a view showing a sliding door type opening / closing door which uses a conventionally used braking means by electric control and a braking means by mechanical method.

FIG. 8 is an exploded perspective view of a control unit main body.

FIG. 9 is a diagram showing a conventional cam mechanism.

[Explanation of symbols]

30: door opening / closing motor, 40: unit case
S 50: camshaft, 60: cam 70: frame, 72, 73, 74, 75 ...
.Screw rods, 80, 81, 82, 83... Nuts, 9
0, 91, 92, 93 ... limit switch support members, 96, 97, 98, 99 ... limit switches,
96a, 97a, 98a, 99a: Limit switch protrusion 96b, 97b, 98b, 99b: Limit switch arm 96c, 97c, 98c, 99c: Limit switch roller A: Open / close switch, SW1 ~ SW4: Limit switch C: Capacitor, R: Resistance, Tr1, Tr
2, Tr3, Tr4: transistor, M: motor

Claims (3)

(57) [Claims] 1. A vehicle door opening and closing switch operating mechanism having a control unit for controlling opening and closing operations of the sliding door type door for opening and closing a doorway provided in the vehicle and out, doors when said control unit at least the door closed complete A door stop switch for stopping the drive motor, a stop switch for temporarily stopping the closing operation immediately before the door is closed, and then decelerating the door in the closing direction, and an open switch for stopping the door drive motor when the door is completely opened. and the door stop switch, oN contacts of these switches, one month in order to OFF operation
A single cam rotatably supported by a camshaft,
When pressed by the cam, the contacts of each switch
Arranged for each switch to operate and the rotation of the cam
A switch arm opposing the movement path.
And, each switch includes a respective individually screwed supported nut by a plurality of threaded rod rotatably supported through the interior of each said control unit, of the threaded rod exposed to the control unit outside An operation mechanism of a vehicle door opening / closing switch, wherein an axial position of each of the switches, which has been stopped from rotating, is made variable by operating an end portion and rotating the screw bar in a forward / reverse direction. 2. The vehicle according to claim 1, wherein a cam shaft of the cam is connected to the door, and the opening and closing operation of the door rotates the cam shaft to rotate the cam. Operation mechanism of door open / close switch. 3. A vehicle door opening and closing switch operating mechanism having a control unit for controlling opening and closing operations of the sliding door type door for opening and closing a doorway provided in the vehicle and out, the control unit, upon completion of at least the door closed and closing stop switch contacts are switched, and pause switch contact is switched just before the door closing, the door opening stop switch the contacts switched upon door opening completion, the camshaft rotates with the opening and closing operation of the door, these switches Contact of O
N, turn by the camshaft to operate OFF
A single cam movably supported and having an ax or hatchet shape, and each switch when pressed by the cam;
And it is arranged for each switch in order to successively actuate the contacts
A switch arm that is disposed opposite to the cam rotation path.
A beam and, the, the switches are provided with respective individually screwed supported nut by a plurality of threaded rod rotatably supported through the interior of each said control unit, exposed to the control unit outside By operating the end of the threaded rod and rotating the threaded rod in the forward / reverse direction, the axial position of each switch that has been stopped from rotation is made variable. Operation mechanism.