JPS5996384A - Apparatus for regulating angle and lifting of blid slat - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for automatically raising and lowering a blind and adjusting a slat angle.

The rotating shaft of the winding drum for winding the upper and lower cables that raise and lower the slats is horizontally mounted inside the head box of the blind, and a DC motor, several stages of reduction gear mechanism, power transformer, etc. are installed at one end of the head box to automatically operate the blind. An electrically operated type that raises and lowers the slats has been put into practical use.

However, in all of these conventional examples, the operator must go to the blind installation location to perform various operations on the blind, and it is necessary to mount a transformer and other control components in the head box. Therefore, it was difficult to assemble and wire the head box during manufacture, and the head box was heavy, making installation difficult.

The present invention aims to eliminate the above-mentioned drawbacks, and is characterized by providing an electric blind with a drive motor and limit switches for positioning the upper and lower limits of the slats in the head box. The present invention provides a blind slat lifting and angle adjusting device characterized in that a control unit related to a motor is externally installed in a wired manner and can be remote controlled. An embodiment of the present invention shown in the drawings will be described in detail below. Figure 1 is a wiring diagram of an electric circuit for raising and lowering the blind of this invention and also adjusting the inclination angle of the slats. The intermediate tapped secondary winding t of T has terminals t and t2 selectively connected to a rectifier circuit DETt via a contact S1 of a voltage switching relay S, which will be described later. The rectifier circuit DET+ includes rising and falling relays V, which will be described later.

The output terminals B and W are selectively connected through the contact ultdl of D, and the contact S of the voltage switching relay is used to switch the output voltage (24v and 9v) to the rising and falling relay contacts. The terminal B of the connector is configured to be switched to a positive or negative electrode, and the terminal W of the connector is switched to a negative or positive electrode.

A rectifier circuit DET is connected to the other secondary winding t2,
A smoothing capacitor C is placed at the DC output end.

and a self-returning push-button type changeover switch C3.
Wo, a series circuit of C3Wz□ and ascending relay U, a series circuit of self-returning bushing-type changeover switches C5WI2, C5W21 and descending relay D that interlock with the changeover switches CSW'++ and CSW2□, respectively, and self-holding switching. Switch C3W8. and a series circuit of the voltage switching relay S, and the switching switch C5W3. A self-holding selector switch c SW, which is interlocked with the resistor R3 and a series circuit of a light emitting diode LED3 are connected in parallel.

In addition, a resistor R0 and a light emitting diode LED l are connected to the series circuit of the changeover switch C3W22 and the rising IJ relay.
A series circuit of a resistor R2 and a light emitting diode LED2 is connected in parallel to a series circuit of a changeover switch CSW, 2 and a lowering relay D, and a series circuit of a resistor R2 and a light emitting diode LED2 is connected in parallel to a series circuit of a changeover switch CSW, 2 and a lowering relay D. Connection point P of changeover switch C8W+l and C3W2° to point P+, and C5
The connection point P3 between W2t and C3Wtp is connected to the contact piece u2゜d of the ascending relay U and descending relay D, respectively, so that the relays U and D can be self-held, and the connector terminal B, Diode D1 between W, rising limit switch U L S 1. Series circuit of UL S2, diode D2, falling limit switch DLS+
- It has a circuit configuration in which the DC motor M is connected through a circuit in which the series circuit of DLS2 is connected in parallel.

Note that C7 in FIG. 1 is a capacitor connected in parallel to the motor.

Figure 2 is an external view of a blind equipped with a blind lifting and slat angle adjusting device constructed using the above-mentioned circuit. A DC motor M is connected to one end, and a slat upper and lower cable 12 and a slat tilting cable 13 are respectively attached to the rotating shaft. In addition, 14 is a slat, 15 is a bottom rail, and 16 is a control box, which is a control section C0 of the circuit shown in FIG.
The NT is housed therein, and 17 is an outlet plug for connecting to a commercial power source.

Figure 3 is an external view of the control box 16, with displays 18a-18c, indicator lights LED, ~L on the front of the box.
ED3 OJ: and each of the above changeover switches C3WII, C5
Operation button 2 corresponding to w2゜ and CSWz + respectively
0a to 2Uc are provided.

The blind slat lifting and angle adjusting device of the present invention is constructed as described above, and the blind lifting and slat angle adjusting operations will be described below using this device shown in FIGS. 1 and 2.

(1) In the initial state, the blind is lowered as shown in Figure 2.
Or DLS2 is open.

In addition, selector switches CSW+t, C5W21 and CSWs 1 should be left open. CSW, □, C5W22
and CSW, 2 are closed, and in the state of , the rising relay U1, the falling relay D, and the voltage switching relay S are not excited, and the light emitting diode LED, .

LED, (red) is off, light emitting diode LED8
(blue) is lit.

(2) Blind raising operation Changeover switch cswll for raising the blind.

When the push button 20a for operating CSW, 2 is pressed, the changeover switch C3Wit is closed and the switch CSW, 2 is opened.

Therefore, a DC voltage of approximately 6 V is applied to both ends of the coil of the rising relay U through the changeover switches CSWn, CSW, 2, and the relay is energized, so that its contact piece ul.

u2 switches from contact t6 to t, and from contact t8 to wrinkle t, respectively. This causes a 6V DC current to flow from the positive voltage side of the rectifier circuit DET to the rising relay U through the closed changeover switch CSWG, the contact t7 in contact with the contact piece U2, and the closed changeover switch C5W22. Voltage is applied. Therefore, at this point, selector switch C3
Even if the push button 20a for operating Wu-C3W12 is released, the relay is self-retaining and the energized state is maintained. At this time, the light emitting diode LED emits light through the resistor R.

On the other hand, from the contact ul of the rising relay U which is in contact with the contact t5 connected to the positive voltage side of the rectifier circuit DET, to the terminal W1 of the connector, the rising limit switch UL of the DC motor M1.
S t lUL S 2. A closed circuit is created to enter the negative voltage side of the rectifier circuit DETI through the diode D1, the terminal B of the connector, and the contact piece d of the descending relay D that is in contact with the contact t4, and the motor M starts rotating and winds up the blind. At this time, a DC 24V is applied to both ends of the motor M, and the motor M rotates at the rated speed to quickly raise the blind, and when the blind is completely raised, a rise limit switch ULSl is activated.

Either ULS2 is opened and motor M is stopped.

(6) Lowering operation of the blind When the operation button 20b corresponding to the changeover switch CSW2+ is pressed from the above-mentioned state, the changeover switch CSW2° is closed, C3W22 is opened, and the self-holding upward relay U is energized. Direct current 6 is applied from the positive voltage side of the rectifier circuit DET2 through the closed changeover switch CSW2.1 and the closed changeover switch C3WI2.
When v is applied and this relay is energized, its contact d1 changes from contact t4 to t3, and contact d2 changes to contact t. The changeover switch C3W32 is closed from the positive voltage side of the rectifier circuit DET2, the contact d2 is in contact with the contact t, and the changeover switch CSWI is closed, respectively.
Relay D is self-maintained by a closed circuit that passes through and reaches descending relay D. Therefore, at this point, the operation button 20b
Even if the lowering relay D is returned to its original state, the lowering relay D continues to be energized. Furthermore, a voltage is applied across the light emitting diode LED through the resistor R1, causing it to emit light and the light emitting diode LED t that has been emitting light to be extinguished.

On the other hand, when switching from contact t4 to t3 of contact piece d1, from the positive voltage side of the rectifier circuit DE
A closed circuit is formed that passes through S + -DLS 2, the terminal W of the DC motor M1 connector, and the contact U that is in contact with the contact t6, and enters the negative voltage side of the rectifier circuit DET+, and the motor M is connected to the rise of the blind. It begins to rotate in the opposite direction, and the blinds begin to fall. At this time, a DC voltage of 24V is applied to both ends of the motor M, and it rotates at the rated speed, and when the blind lowers and one of the lowering limit switches DL S Ir E L S 2 opens, the motor M stops.

(4) Midway operation of the blind For example, when attempting to stop the blind while it is being lowered, the circuit state is as described above. At this time, if you press the stop operation button 20c, the changeover switch c
SW8 is closed and C3Wa! opens. As a result, the light emitting diode LEDB is turned off, the voltage switching relay S is energized, and its contact S is switched from the contact t1 to the contact t2.

Selector switch C3W3 from the positive voltage side of rectifier circuit DET2
2. Contact piece d2 and changeover switch CS in contact with contact t.
The self-holding circuit that energized the descending relay D through W, opens, and the descending relay D becomes de-energized and its contacts d,
is switched from contact t3 to t4, and the shimotor M stops. At the same time, the light emitting diode LED goes out. The same applies to stopping while climbing a blind.

(5) Slat angle adjustment operation When the blind stops, selector switch C8W□ closes and C8W□ closes.
3W3□ is left open, and when the operating button 20a is pressed to close the changeover switch C3WII and open C3WI2, the changeover switch CS is switched from the positive voltage side of the rectifier circuit DET2.
A closed circuit can be formed through Wo and CSW22 to the ascending relay U, and the ascending relay U is energized and the light emitting diode LED and LED, s emit light. At this time, in the rectifier circuit DET1, the contact SI of the relay S is the low voltage side contact t.
, is connected to the positive voltage side of the circuit DETI, passes through the contact piece U1 that is in contact with the contact point t of the relay, and connects to the terminal W1 of the connector, the DC motor M1, and the rising limit switch U.
LS+, ULS2, diode D0, terminal B of the connector, and contact piece d in contact with contact t4 are traced to the negative voltage side of the limb flow circuit DETfl, and a low DC voltage of 9 cm is applied to the motor M through a closed circuit. The motor M rotates at low speed and gently tilts the slat 14. When the operating button 20a is released, the switching switch C3Wu opens, C3WI2 closes, and the ascending relay U becomes de-energized.The light emitting diode LE
D, and I, ED3 are quenched.

In this state, press the operation button 20b and select the changeover switch C3W2.
．． When C3W22 is closed and C3W22 is opened to operate the descending relay D, each relay contact piece u, , d is te.
= Switch to ts The cis rat 14 is gently tilted in the opposite direction to the above case. As described above, the present invention provides an electric blind in which a drive motor and limit switches for positioning the upper and lower limits of the slat are provided in the head box, and a control unit related to the motor is provided externally in a wired manner. The control unit CoNT, including the transformer, etc. can be housed in the control box, which simplifies the configuration and assembly of parts inside the head box and the wiring inside the head box, and reduces weight (it is easy to use a few words). Since the wiring voltage can be lowered, the risk of electrical leakage and electric shock is reduced.

[Brief explanation of drawings]

The figures show one embodiment of the present invention. Figure 1 is a circuit diagram of the blind lifting and slat angle adjustment circuit, Figure 2 is an external view of the entire device, and Figure 3 is a front view of the operating box. It is. T...transformer, DETI, DET2...rectifier circuit, BW...terminal, C1, C7...capacitor, C
SWt+, C5W12C8W21, C3W22
, C3Wat , C3Wat "' changeover switch,
U, D, S...Relay, R2 to R3...Resistor, LE
D1 ~ LED, ... light emitting diode, ULSI, U
LS,...Rise limit switch, DLSr, DL
Sz...Downward limit switch, M...DC motor. Shi-12, Z, top

Claims (1)

[Claims] Lifting and lowering of blind slats in an electric blind, characterized in that a drive motor and limit switches for positioning the upper and lower limits of the slat are provided in the head box, and a control unit related to the motor is externally provided in a wired manner. as well as an angle adjustment device.