JPH047353Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a window opener device that opens and closes a vehicle window by rotating a motor forward or reverse by operating an opening/closing switch.

(Prior art) Generally, two-door type and sports type passenger cars use a triangular-shaped window called a quarter window as a window on the side of the rear seat. It is hinged to the center pillar and can be opened and closed manually or automatically.

In the above-mentioned quarter window, a window opener device that automatically opens and closes the window glass has conventionally been used as shown in Fig. 1.
Generally, the windshield is normally off, and the windshield is opened and closed by operating a switch 2 that changes the direction of current from battery B to motor 1 in accordance with the switching operation, and then rotates motor 1 in the forward and reverse directions. Are known.

By the way, in the above window opener device, a motor with a large output torque is used as the motor 1 in order to ensure that the window glass is opened and closed even if the voltage applied to the motor 1 decreases. The output torque of the motor 1 is very large when the voltage is There was a risk of injury to my fingers.

(Purpose and structure of the invention) The present invention has been made in view of the above problems, and its purpose is to apply current to the motor that opens and closes the window glass at a constant voltage lower than the power supply voltage when the window glass is closed. By supplying a The purpose is to ensure that the window glass can be closed even when the window glass is closed.

For this reason, the present invention provides an electric current between the opening/closing switch, which is normally off and switches the direction of the current supplied from the power supply according to the switching operation, and the motor that drives the window opening/closing member in the direction that the motor rotates in the forward direction. A diode is provided to allow current to pass through and block current in the direction of reverse rotation, and a constant voltage circuit to supply current to the motor in the direction of reverse rotation at a constant voltage lower than the power supply voltage. As a result, the output torque of the motor is large when the window glass is opened, and when the window glass is closed, the output torque is at least enough to close the window glass, thereby avoiding danger when the window glass is closed.

(Embodiments) Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

FIG. 2 shows a rear seat quarter window of a passenger car equipped with a window opener device according to the present invention.

In the quarter window, a window glass 3 is hinged to a center pillar 4a of a vehicle body 4 so as to be freely openable and closable.
When operating to open, it opens from position A shown by the solid line to position B shown by the dotted line, and conversely, when operating to close,
Close from position B to position A.

As shown in FIG. 3, the window opening/closing mechanism 5 includes an output shaft (not shown) of a speed reduction mechanism 7 of a motor 6.
It consists of a pinion 8 attached to the pinion 8, a rack 9 meshing with the pinion 8, and a connecting member 11 hinged to the tip of the rack 9 by a connecting shaft 10 and fixed to the window glass 3. Motor 6 decelerated by the deceleration mechanism 7
The output is transmitted from the pinion 8 to the arc-shaped rack 9, and the amount of the rack 9 being extended from the guide 12 changes with the rotation of the pinion 8, and the window glass 3 is opened and closed as explained in FIG. .

The motor 6 is driven by a circuit shown in FIG.

As shown in FIG. 4, between the motor 6 and an on/off switch 14 which is normally off and switches the direction of the current flowing through the motor 6 in response to a switching operation, there is a The constant voltage circuit 13 is connected to a diode D ₁ that allows current to pass through but blocks current in the reverse rotation direction. That is, the diode D ₁ has an anode connected to the movable contact of the switch SW ₁ of the open/close switch 14.
a ₁ , and its cathode is connected to one end of the motor 6 . On the other hand, the pnp type transistor Q ₁ ,
Q ₂ , Zener diode D ₂ , operation stabilization resistance (hereinafter simply referred to as resistance) R of this Zener diode D ₂ , and oscillation prevention capacitor (hereinafter referred to as “resistance”)
It is simply written as a capacitor. ) C, the transistors Q ₁ and Q ₂ are Darlington-connected, the emitter of the transistor Q ₁ is connected to one end of the motor 6, and the transistor
Each collector of Q ₁ and Q ₂ has on/off switch 1.
It is connected to the movable contact a ₁ of the switch SW ₁ of No. 4. Further, the base of the transistor _Q2 is connected to the anode of the Zener diode _D2 , and a resistor R and a capacitor C are connected between this anode and _{the movable contact a1 of} the switch SW1. The cathode of the Zener diode _D2 above is
The anode side is connected to the cathode of a diode D ₃ connected to the movable contact b ₁ of the switch SW ₂ of the open/close switch 14 . This diode D ₃ is used to compensate for the temperature of the Zener diode D ₂ and to protect the constant voltage circuit 13 when the motor 6 rotates in the forward direction.

The movable contact b ₁ of the switch SW ₂ of the on-off switch 14 to which the anode of the diode D ₃ is connected is also connected to the other end of the motor 6.

The on-off switch 14 consists of two switches _SW1 and _SW2 . Switch SW ₁ has movable contact a ₁ ,
Opening contact for window glass 3 (see Figure 2)
A ₂ , a neutral contact A ₃ and a contact A ₄ for closing the window glass 3. Similarly, the switch SW ₂ has a movable contact b ₁ , a contact b ₂ for opening the window glass 3, a neutral contact b ₃ , and a contact b ₄ for closing the window glass 3. The two movable contacts a ₁ and b ₁ are switched in conjunction with each other, and are normally connected to neutral contacts a ₃ and b ₃ , respectively.

The opening contact a ₂ and the closing contact a ₄ of the switch SW ₁ are respectively connected to the positive and negative electrodes of a battery B serving as a power source. Opening contact b ₂ and closing contact b ₄ of another switch SW ₂
are connected to the negative and positive electrodes of the battery B, respectively.

In the circuit shown in FIG. 4 above, the on/off switch 14
Operate the movable contact A ₁ of switches SW ₁ and SW ₂ .
and b ₁ are connected to the opening contacts a ₂ and b ₂ , respectively, the anode of the diode D ₁ is connected to the positive electrode of the battery B, and the cathode is connected to the negative electrode of the battery B through the motor 6. This results in
A current flows through the motor 6 through the diode _D1 in the direction indicated by the arrow _A1 in FIG.
The motor 6 rotates forward. When the motor 6 rotates in the forward direction, the pinion 8 rotates in a direction that increases the amount by which the rack 9 is extended from the guide 12 (see Figure 3), and the opening angle of the window glass 3 changes in accordance with the amount by which the rack 9 is extended. and open/close switch 1
When the operation of 4 is stopped, the window glass 3 stops at that position. When the window glass 3 is opened, the motor 6 is supplied with a voltage that is approximately equal to the voltage of the battery B, that is, the forward voltage of the diode _D1 is higher than the voltage of the battery B (usually 1 volt or less).
The motor 6 rotates with a large output torque, and the window glass 3 receives a large force from the window opening/closing mechanism 5 to open.

Note that at this time, the diode D ₃ is reverse biased and turned off, the cathode of the Zener diode D ₂ of the constant voltage circuit 13 is separated from the negative electrode of the battery B, and the transistors Q ₁ and Q of the constant voltage circuit 13 _This prevents a large current from flowing from the emitter to the base of transistors Q ₁ and Q ₂ from destroying them.

On the other hand, in the circuit shown in FIG.
4, move the movable contacts of switches SW ₁ and SW ₂ .
When a ₁ and b ₁ are connected to the closing contacts a ₄ and b ₄ , respectively, the anode of the diode D ₁ is connected to the negative electrode of the battery B, and the cathode is connected to the positive electrode of the battery B through the motor 6. As a result, the diode _D1 is turned off, and the emitter and collector of the transistor _Q1 of the constant voltage circuit 13 are opened. Further, the anode of the diode D ₃ is connected to the positive electrode of the battery B, and the cathode is connected to the negative electrode of the battery B through the Zener diode D ₂ and the resistor R, so that the diode D ₃ is turned on. The constant voltage circuit 13 is activated by turning off the diode D ₁ and turning on the diode D ₃ , and this constant voltage circuit 13 operates by controlling the Zener voltage Vz of the Zener diode D ₂ , the forward voltage Vf of the diode D ₃ , and the base voltage of the transistor Q ₁ . The emitter voltage V _BE1 and the transistor
The sum of the base-emitter voltage V _BE2 of Q ₂ (Vz + Vf
A voltage V ₀ equal to +V _BE1 +V _BE2 ) is output, this voltage V ₀ is applied to the motor 6, and a current flows through the motor 6 in the direction of the arrow A ₂ .

By the way, the voltage V ₀ (=Vz+Vf+V _BE1 +V _BE2 ) output from the constant voltage circuit 13 is Vf, V _BE1 ,
Since V _BE2 is constant (usually a value of 1 volt or less), it is determined by the Zener voltage V ₂ of the Zener diode D ₂ . Therefore, the Zener diode D ₂ is selected to have a Zener voltage Vz such that the output voltage V ₀ of the constant voltage circuit 13 has a value that allows the motor 6 to at least close the window glass 3. By doing so, the window glass 3 can be operated to close with a weaker force than when the window glass 3 is opened.

By doing the above, there is no danger when the window glass 3 closes, and even if the voltage of the battery B drops, a constant output voltage V ₀ is output from the constant voltage circuit 13, and the window glass 3 is securely closed. Close operation.

In the above embodiment, instead of the constant voltage circuit 13, although not specifically shown, the error is fed back to a transistor that detects the error in the output voltage and controls the voltage applied to the load, and the output voltage is adjusted. A constant voltage circuit or the like that controls the voltage to a constant value can also be used.

Further, the present invention is not limited to quarter windows, but can also be applied to ordinary power window devices.

(Effects of the invention) As is clear from the detailed description above, the present invention provides a window opener device in which power supply voltage is directly applied to the motor for opening and closing the window glass when the window glass is opened. When the window is closed, the power supply voltage is applied to the motor through a constant voltage circuit, so when the window is opened, the motor's output torque is large, and when it is closed, the output torque is at least enough to close the window. Therefore, it is possible to avoid danger during the closing operation of the window glass, and the opening and closing operations of the window glass can also be performed reliably.

[Brief explanation of the drawing]

Fig. 1 is a circuit diagram of a motor drive circuit of a conventional window opener device, Fig. 2 is an explanatory diagram of a quarter window, Fig. 3 is a front view of a window opening/closing mechanism, and Fig. 4 is a diagram of a window opener device according to the present invention. FIG. 3 is a circuit diagram of a motor drive circuit. 3... Windshield, 5... Window opening/closing mechanism, 6... Motor, 8... Pinion, 9... Rack, 11... Coupling member, 13... Constant voltage circuit, 1
4... Open/close switch, D ₁ , D ₃ ... Diode,
B...lol.

Claims (1)

[Scope of utility model registration request] a window opening/closing mechanism connected to the window to open and close the window; a motor that rotates forward to drive the window opening/closing mechanism in the direction in which the window opens, and rotates in the reverse direction to drive the window opening/closing mechanism in the direction in which the window closes; , a diode that allows current in the direction of forward rotation of the motor to pass through and blocks current in the direction of reverse rotation, and a constant voltage circuit that supplies current to the motor in the direction of reverse rotation at a constant voltage lower than the power supply voltage. and an opening/closing switch that is normally off and switches the direction of current according to a switching operation, and the output torque of the motor is reduced when the window is closed.