Apparatus for controlling power windows

Abstract: In an apparatus for controlling the motors of power windows, a driver's switch (1) moves a slider (9) located in a recess (12) provided on a main body (4) of the apparatus through an arm (8) movable by a knob (7). On the slider a movable contact (10) is provided, which engages with stationary contacts formed on an auto circuit board (11) located on a rear face of the said main body to switch between manual and automatic operation. The output of the driver's switch, in either manual or automatic operation, controls a motor of the driver's side window through a relay (18). A passenger's side switch (2) is a manual switch and directly controls the motor of a passenger side window through a manual circuit integrated with the said main body.

Description: This invention relates to apparatus for controlling the motors of power windows (see JP-A-08022744). Various kinds of the motor controlling equipment for power windows are well known, as described for example Japanese Laid Open Utility Model No. Hei2-1819, Japanese Laid Open Utility Model No. Hei2-98418, and Japanese Utility Model No. Hei6-41298. In Laid Open Utility Model No. Hei2-1819, motor controlling apparatus for a power window comprises a plurality of control knobs for switching on and off a motor for each window in manual fashion, a switch board provided with a plurality of inner switches corresponding to the said control knobs, and a relay. board having relays driven by an output of the switch board, the switch board and the relay board being superposed in the vertical direction. In Utility Model No. Hei6-41298, a master switch comprising a manual switch and an auto switch is described. Here, the manual switch is arranged to operate a window by making a motor rotate in forward and reverse directions by moving a V-shaped pivoting contact in an operational direction of a control knob, while the auto switch is provided with a mechanical type contact holding means using a solenoid. In the case of controlling a motor by a relay as in Laid Open Utility Model No. Hei2-1819, it is possible to miniaturize the apparatus by superposing a relay board on a switch board. However, because it is required to provide inner switches corresponding to all of the operating knobs and switch circuits therefor, there is a limit to miniaturization of the switch board, with the result that a reduction in the whole size of the apparatus is limited by the size of the switch board. On the other hand, when the switch is arranged as in Utility Model No. Hei6-41298, it can be made at a low cost, but the size of the entire apparatus is larger because it requires a comparatively complex mechanical construction. Therefore, an object of the present invention is to simplify the whole construction by employing an auto switch using a relay, and to make the whole apparatus compact by making a manual circuit as small as possible. According to the present invention there is provided apparatus for controlling the motors of power windows, comprising: an auto switch arranged to control a motor for at least one window in both manual and automatic fashions, and a manual switch arranged to control a motor of at least one other window in manual fashion only, wherein the said manual switch is arranged to directly control its associated motor by switching operation of a manual circuit formed in a main body of the apparatus, while the said auto switch is associated with an auto circuit board formed in a different body from the said main body, with the switch contacts and relays for manual operation and automatic operation overlapping on the said main body. With such an arrangement, since a contact portion of the auto switch and the relay are provided on the auto circuit board and the motor is controlled through the relay, the auto switch can be simply constructed and the manual circuit in the auto switch can be integrated with the auto circuit board. On the other hand, because in the manual switch only the manual circuit portion is provided on the main body and it is not required to provide a manual circuit in the auto switch, the apparatus becomes more compact. Because the auto circuit board is overlapping on the main body and the sizes of the auto circuit board and the manual circuit portion of the main body can be made to be nearly the same, the whole apparatus can be made more compact. Preferably the said auto switch is arranged to be controlled by a knob on the opposite side of the said auto circuit board across the said main body, by way of a through hole formed in the said main body. Then, because the auto switch is adapted to be operated through a through hole in the main body, the auto circuit board can be arranged to overlap with the manual circuit formed on the main body, and the whole apparatus can be made more compact. Two embodiments of the invention will now be described by way of example and with reference to the accompanying drawings, in which:- Fig. 1 is a sectional view of a driver's switch in a master switch for the driver's side door in a two-door car, according to a first embodiment of the invention; Fig. 2 is a plan view of the whole master switch; Fig. 3 is a view showing a bottom side without a rear cover and cutting off a part thereof; Fig. 4 is a sectional view of an auto circuit board; Fig. 5 is a view to explain the operation of a switch; and Fig. 6 is a view showing a contact portion of the driver's switch according to another embodiment. Referring first to Fig. 2, this master switch comprises a driver's window switch 1 constructed as an auto switch, a passenger's window switch 2 constructed as a manual switch, and a main switch 3 for switching on or off the operation of the switches 1 and 2. Referring to Figs. 1 and 2, the driver's switch 1 comprises a knob 7 mounted to pivot freely up and down on a shaft 6 mounted on a switch base 5 which projects upward from a resin-formed main body 4 of the window control equipment. An arm 8 is arranged to pivot together with the knob 7 and is engaged with a slider 9 whose movement thus follows the pivoting of the arm 8. An auto circuit board 11 includes a stationary contact (described later) for engaging a movable contact 10 of the slider 9. As is shown in Fig. 5, using a well known click mechanism (not shown), the knob 7 is pivotable two steps around the shaft 6, respectively clockwise and counterclockwise from a neutral position N. In the clockwise direction it is pivotable to a manual down position MD and an auto down position AD, while in the counterclockwise direction it is pivotable to a manual up position MU and an auto up position AU. The switch base 5 is in the form of a substantially square hollow pillar, with a partition wall 5a formed in the middle portion thereof. The tip of the arm 8 extends into a recess 12 formed in the main body 4 at a lower level than the partition wall 5a, the arm 8 passing through an elongate slot 5b in the partition wall 5a and engaging with the slider 9 which is arranged to move freely in the recess 12. The recess 12 is of dimensions to accommodate the movement of the slider 9. A conventional click ditch 5c is formed parallel to the slot to permit pivoting of the knob 7 between the neutral position and the manual and auto positions. As shown in Fig. 3, on the surface of the auto circuit board 11 facing the recess 12, stationary contacts of the driver's switch 1 are provided. As shown in Fig. 4, these comprise a ground terminal 13, an auto down terminal 14, a manual down terminal 15, an auto up terminal 16 and a manual up terminal 17, respectively arranged to be a part of a circuit formed on the auto circuit board 11. This circuit is connected to a relay 18 and the output thereof is sent from the auto circuit board 11 to the main body 4 through a connecting portion 19. Referring again to Fig. 5, when the knob 7 is in the neutral position N, the movable contact 10 is in contact only with the ground terminal 13, and the relay does not operate. If the knob 7 is moved to the manual down position MD, the movable contact 10 is aligned with both the ground terminal 13 and the manual down terminal 15, and the relay 18 is then activated when the knob is pushed down, so as to operate the motor to lower the window. If the knob is moved to the auto down position AD, the circuit is placed in auto condition in that the movable contact 10 at once contacts the ground terminal 13, the manual down terminal 15, and the auto down terminal 14, without the knob being pushed down, thus causing the motor to operate until the window is fully open. Similarly, if the knob is moved from the neutral position N to the manual up position MU, the movable contact 10 becomes aligned with both the ground terminal 13 and the manual up terminal 17 to cause the motor to operate in the window closing direction only when the knob is pushed down. Lastly, if the knob is moved to the auto up position AU, the ground terminal 13 is at once connected with the auto up terminal 16 so that the motor is caused to operate until the window is fully closed. As shown in Fig. 1, a coupler 20 is formed integrally on the main body 4, into which a plurality of coupler terminals 21 project. The coupler terminals 21 comprise end portions of terminal plates 22 insert molded into the main body. One of the terminal plates 22 is arranged to transmit the output from the relay 18 to the motor of the driver's window, and another such terminal plate is arranged to transmit the output from the main switch 3 to the motor of the passenger's window and to be the power supply circuit. The passenger's window switch 2 is arranged to control the motor for the passenger's window by directly operating a control switch for the motor by way of knob 23 (Fig. 2), in a conventional manner. Reference 25 in Fig. 1 indicates a cover for the main body 4 which exposes the knob 7, the knob 23 and a knob 24 of the switch 3. Reference 26 indicates a bottom cover which encloses the auto circuit board 11 and the relay 18. Since the movable contact 10 of the driver's switch 1 is associated with the auto circuit board 11, and control of the window motor by the driver's switch 1 is associated with the auto circuit board 11, and control of the window motor by the driver's switch 1 is executed through the relay 18, the auto switch circuit can be integrated with the manual switch circuit, which simplifies the construction. Further, since the passenger's switch 2 has only to operate a manual circuit, it can be made compact. Moreover, because the slider 9 is arranged to make a connection with a stationary contact on the auto circuit board 11, by moving the slider by way of the knob 7 through the recess 12 which is a through hole formed in the main body 4, a manual circuit forming portion 27 of the control main body 4 can be made nearly the same size as the auto circuit board 11 and such parts can be superposed one on the other in the vertical direction, whereby the whole apparatus can be made compact. Application of the invention is not limited to a two door vehicle, as the apparatus can readily be provided with additional switches suitable for a four door vehicle. Fig. 6 is a view showing a contact portion of the driver's switch 1 of a second embodiment. Here, the switch 1 includes legs 30 and 31 located symmetrically about the shaft 6 to push down plungers 32 and 33 which are freely movable in the up and down directions on the main body 4. The lower ends of the plungers push down conductive rubber contacts 34 and 35 to make contact with a down contact 36 or an up contact 37 of the manual circuit formed on the auto circuit board 11. Although not shown in the cross-sectional view because they are out of the plane of the paper surface, a pair of conductive rubber contacts 38 and 39 also activated by the lower ends of the plungers 32,33 are arranged to contact respectively with a down contact 40 and an up contact 41 of the auto circuit. However, since it is required that the knob 7 is pivotable so that the conductive rubber contacts 38 and 39 on the auto side are not made to contact the down and up contacts 40 and 41 when the knob 7 is on the manual side, the plungers 32,33 on the manual side are provided with coil springs 32a and 33a and the amount of projection of the tip of each plunger 32,33 in the neutral condition is made larger than that on the auto side. As a result of this, in the manual position, only the conductive rubber contacts 34 and 35 conduct. In the auto position, as the knob is further pushed down, the coil springs 32a,33a of the plungers 32,33 are compressed so as to make the conductive rubber contacts 38,39 of the auto side also conduct. Other arrangements may be adopted for staggering the timing of the contacts on the manual side and the auto side respectively. For example, it is possible to make the conductive rubber contacts 34,35 thicker than the conductive rubber contacts 38,39.

Claims: Apparatus for controlling the motors of power windows, comprising: an auto switch (1) arranged to control a motor for at least one window in both manual and automatic fashions, and a manual switch (2) arranged to control a motor of at least one other window in manual fashion only, wherein the said manual switch is arranged to directly control its associated motor by switching operation of a manual circuit formed in a main body of the apparatus, while the said auto switch is associated with an auto circuit board (11) characterised in that said auto circuit board is formed in a different body from the said main body, with the switch contacts and relays for manual operation and automatic operation overlapping with the said main body. Apparatus according to claim 1, characterised in that the said auto switch (1) is arranged to be controlled by a knob (7) on the opposite side of the said auto circuit board (11) across the said main body, by way of a through hole (12) formed in the said main body.

Inventors: OIKAWA HIROSHI, OIKAWA, HIROSHI, Oikawa, Hiroshi, Toyodenso Kabushiki Kaisha
Applicants: TOYO DENSO KK, TOYODENSO KABUSHIKI KAISHA
Application year: 1998
Main classification: E05F15
IPC codes: H01H9, B60J1, E05F15, H01H23