CN201289614Y

CN201289614Y - Electric curtain

Info

Publication number: CN201289614Y
Application number: CNU2008201786666U
Authority: CN
Inventors: 李志罡
Original assignee: Haier Group Corp; Qingdao Haier Intelligent Home Appliance Technology Co Ltd
Current assignee: Haier Group Corp; Qingdao Haier Intelligent Home Appliance Technology Co Ltd
Priority date: 2008-11-05
Filing date: 2008-11-05
Publication date: 2009-08-12
Anticipated expiration: 2018-11-05

Abstract

The utility model provides an electrical curtain, which comprises a motor, a traction component and a transmission device, wherein the motor drives the transmission device to move the traction component. The electrical curtain is characterized in that the electrical curtain also includes a position detection device for detecting whether the traction component reaches an appointed position and transmitting a trigger signal if the traction component reaches the appointed position, and a motor control module for controlling the rotation speed of the motor according to the trigger signal transmitted from the position detection device. The electrical curtain can be drawn in short time, and can prevent high-speed collision between the traction component driven by the motor and the terminal of the transmission device.

Description

Electrically driven curtain

Technical field

The utility model relates to a kind of electrically driven curtain, particularly relates to the control to drive motor.

Background technology

At present, electrically driven curtain generally includes motor, traction element and gearing.Wherein gearing generally includes track and setting driving belt in orbit.On the driving belt in the track traction element is installed, an end and the track of curtain fix, and the other end and traction element fix.Driving belt is motion in orbit under the driving of motor, and the traction element drive curtain that is installed on the driving belt moves along with the motion of driving belt.Existing electrically driven curtain is after startup, motor remains a running speed, curtain is when incoming terminal like this, can bump and produce big noise with high speed and gearing terminal by motor-driven traction element, and, also can cause bigger impact to motor and gearing because motor stall in the process of running up stops.Motor rotation speed is constant all the time in addition, can not satisfy the needs that the user draws the curtain apart in the short period of time.Because draw the curtain apart in the short period of time, need to improve the travelling speed of driving belt, but the raising of travelling speed, the collision that can strengthen traction element and gearing terminal causes traction element or gearing impaired.

The utility model content

In view of this, the utility model provides a kind of electrically driven curtain, both can satisfy the needs of drawing the curtain apart in the short period of time, can prevent motor-driven traction element and gearing terminal generation high velocity impact again.

The electrically driven curtain that the utility model provides comprises, motor, traction element and gearing, electric motor drives moves traction element, it is characterized in that, also comprise: position detecting device, be used to detect traction element and whether arrive assigned address, when arriving assigned address, send trigger pip; Motor control module is controlled rotating speed of motor according to the trigger pip that position detecting device sends.

Wherein, described position detecting device comprises: be arranged on magnet on the traction element, be arranged on the magnetic switch of gearing assigned address, the signal generator that sends trigger pip when magnetic switch is closed that links to each other with magnetic switch.

Wherein, described magnetic switch is a tongue tube.

Preferable, described magnetic switch is a hall device.

Wherein, described position detecting device comprises: be arranged on the optoelectronic switch of gearing assigned address, the signal generator that sends trigger pip when optoelectronic switch is closed that links to each other with optoelectronic switch.

Optionally, described assigned address comprises at least 2; Motor control module makes motor reduce rotating speed at described assigned address.

Wherein, described position detecting device comprises the time calculating unit that the traveling time of curtain is carried out timing, according between the timing of time calculating unit institute, described position detecting device judges whether the position of sending trigger pip is the assigned address that needs to reduce motor speed.

In addition, described position detecting device comprises the counting unit that the trigger pip of sending is counted, and described position detecting device judges according to the count value of counting unit whether the position of sending trigger pip is the assigned address that needs reduce motor speed.

As seen from the above, the utility model has increased on the basis of existing electrically driven curtain and has detected the motor control module that control motor when sending the position detecting device of trigger pip when traction element arrives the assigned address of gearing and receiving the trigger pip that position detecting device sends reduces rotating speed, and the traction element of curtain underspeeded at assigned address.

Can effectively detect the assigned address whether traction element arrives gearing by the position detecting device that is arranged on magnet on the traction element, is arranged on the magnetic switch of gearing assigned address, the signal generator that sends trigger pip when magnetic switch is closed that links to each other with magnetic switch is formed.

That the locating device of being made up of the optoelectronic switch that is arranged on the gearing assigned address, the signal generator that sends trigger pip when optoelectronic switch is closed that links to each other with optoelectronic switch has is contactless, do not have machinery moves the sensitivity advantages of higher.

The utility model adopts a plurality of locating devices, thereby curtain is moved with different speed in different positions, also can make curtain in the appointed positions stop motion, has increased the controllability of curtain speed.

Control module of the present utility model also comprises time calculating unit or counting unit, can judge whether the position of sending trigger pip is the assigned address that needs to reduce motor speed.

Description of drawings

The structure principle chart of the electrically driven curtain that Fig. 1 provides for the utility model;

Fig. 2 is the structural representation of the motor control assembly of electrically driven curtain;

Fig. 3 is the position detecting device structural representation of motor control assembly;

Fig. 4 is the structural representation of the motor control assembly of electrically driven curtain, the synoptic diagram when wherein figure (A) is bail process optoelectronic switch, and figure (B) is structural representation of the position detecting device of use optoelectronic switch.

Embodiment

The structure principle chart of the electrically driven curtain that Fig. 1 provides for the utility model, as shown in the figure, the electrically driven curtain that the utility model provides comprises motor 101, hook 102, bail 103, driving belt 104, track 105.Wherein:

Driving belt 104 is embedded on the track 105, can be along track about 105 operations.Fixed hook 102 is located at the right-hand member of track 105.Bail 103 is installed in the downside of driving belt 104, can be with driving belt 104 motions.One end of curtain (not shown) is fixed on the hook 102, and the other end links to each other with bail 103.The right-hand member driving driving belt 104 that motor 101 is arranged on track 105 moves in track 105.Driving belt 104 is driven during motor 101 running, be installed in bail 103 on the driving belt 104 drive curtain along with the motion of driving belt move left and right.

Fig. 2 is the structural representation of the motor control assembly of electrically driven curtain, and as shown in the figure, motor control assembly comprises: to the position detecting device 201 that shade position detects, motor control module 202.

Position detecting device 201 is by tongue tube 106 and resistance R 1, R2, and the signal generator that C1 constitutes is formed, and is used to detect traction element and whether arrives assigned address on the track 105.Position detecting device 201 has two groups, and tongue tube 106 of each group is separately positioned on the anchor point A and anchor point B on the track 105.Tongue tube 106 is the normal off state, is provided with the magnet 108 that can make tongue tube 106 closures on bail 103 as shown in Figure 1.When bail 103 moves to anchor point A or anchor point B, tongue tube 106 is closed under the effect of magnet 108, by resistance R 1, R2, the trigger pip of the signal generator output low level that C1 constitutes, this trigger pip is by I/O terminal input motor control module 202.Control motor 101 reduced running speed after motor control module 202 received this low level trigger pip, made bail 103 move to track 105 terminals slowly.Be understood that, in this example, also magnet 108 can be arranged on the track 105, tongue tube 202 is arranged on the bail 103.

Motor control module 202 is used to control the running of motor 101, stops and rotating speed.The trigger pip that motor control module 202 received signal generators send, and judge whether the trigger pip that receives is useful signal, when trigger pip is useful signal, this trigger pip control motor 101 reduces running speed, thus the translational speed of the bail 103 on the driving belt 104 that reduction motor 101 is driven.

When promptly opening curtain, motor control module 202 runs up motor 101, and bail 103 drives curtain and is moved to the left.Drive in the process that curtain are moved to the left at bail 103, the tongue tube 106b of anchor point B is subjected to the influence of magnet 108 can closure take place and the trigger pip that produces.Motor control module 202 judges that it is an invalid signals when receiving this trigger pip, still make motor 101 keep running up until anchor point A.When anchor point A motor control module 202 receives the trigger pip of sending because of tongue tube 106a closure, judge that it is a useful signal, the speed of motor 101 is reduced until terminal.When closing curtain, motor control module 202 makes motor 101 run up until anchor point B equally, when anchor point B motor control module 202 receives the trigger pip of sending because of tongue tube 106b closure, be judged as useful signal, the speed of motor 101 is reduced until terminal.In this process, then be judged as invalid signals because of the closed trigger pip of sending of tongue tube 106a at anchor point A.Its concrete control is as follows.

After motor 101 started, the time calculating unit initialization in the motor control module 202 also picked up counting, and motor 101 drives driving belt 104 drive bails 103 and moves to left end from track 105 right-hand members of linking up with 102 places.At initial anchor point B, the signal in the position detecting device 201 sends device and sends trigger pip.Motor control module 202 is after the trigger pip that the signal generator that receives position detecting device 201 sends, the time T that the time calculating unit timing is obtained compares with the time t that is stored in the motor control module 202 in advance, and wherein time t is from linking up with 102 time values of setting to the distance of anchor point B according to the rotating speed of motor 101 and curtain.As to link up with 102 places be 10cm to the distance of anchor point B, drawing bail 103 hooks 102 places according to the general revolution speed calculating of motor 101 is 2 seconds to anchor point B required time, then t can be set at time greater than 2 seconds, as 10 seconds, need to prove that the time of the t of setting should be not more than curtain and move to the needed time of anchor point A from linking up with 102.If result relatively is that time T is less than t, promptly judge then that less than 10 seconds this signal is an invalid signals, the anchor point B that is illustrated in current judgement is not the position that reduces the rotating speed of motor 101, if time T is greater than 10 seconds then be judged as useful signal, the anchor point A that is illustrated in current judgement is the position that reduces motor 101 rotating speeds, motor control module 202 control motors 101 reduce running speed to setting value, make bail 103 move to track 105 terminals slowly.Equally, after motor 101 starts, motor 101 drives driving belt 104 drive bails 103 and moves from track 105 right-hand members of left end to hook 102 places, time calculating unit initialization in the motor control module 202 also picks up counting, because of the time T that arrives anchor point A less than setting-up time t, so the trigger pip that receives at anchor point A is an invalid signals, motor control module 202 is not controlled motor 101 and is reduced rotating speed.At anchor point B, the timing time T of time calculating unit is greater than setting-up time t at this moment, and the trigger pip that motor control module 202 receives is a useful signal, and control motor 101 reduces rotating speeds.

Whether is the judgement of useful signal for the signal generator of position detecting device 201 in the trigger pip that anchor point A or B send, except the employing time is judged, also can count by the counting unit in the control module, control module receives that a trigger pip then counts processing, according to count value, also can judge is to arrive which anchor point.

In addition, the tongue tube in the position detecting device 106 also can be replaced by hall device 206 as shown in Figure 3.Because that hall device 206 has is contactless, do not have the machinery action, the sensitivity advantages of higher, so when adopting hall device 206, the just easier setting of relative position of hall device 206 and magnet 108.Be understood that, in this example, also magnet 108 can be arranged on the track 105, hall device 302 is arranged on the bail 103.

Also have, the tongue tube 106 in the position detecting device 201 also can be substituted by optoelectronic switch with magnet 108.Shown in Fig. 4 (A), when bail 103 moves to optoelectronic switch 306 with driving belt 104, bail 103 retainings are between the luminous end and light-receiving end of optoelectronic switch 306, corresponding light-receiving end triode ends shown in Fig. 4 (B), from the trigger pip of output terminal I/O to motor control module 202 output high level.After motor control module 202 received the trigger pip of this high level, as mentioned above, to the sending after the position judges of trigger pip, control motor 101 reduced running speeds, makes bail 103 move to track 105 terminals slowly.

The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.Also can adopt more locating device as the utility model, also multiple speed can be set in control module, thereby curtain is moved with different speed in different positions,, also can make curtain in the appointed positions stop motion as quickening or running slowly.

Claims

1. an electrically driven curtain comprises, motor (101), traction element (103) and gearing (104), motor (101) drive transmission (104) move traction element (103), it is characterized in that, also comprise:

Position detecting device (201) is used to detect traction element and whether arrives assigned address, sends trigger pip when arriving assigned address;

Motor control module (202), the rotating speed of the trigger pip of sending according to position detecting device (201) control motor (101).

2. electrically driven curtain according to claim 1, it is characterized in that described position detecting device (201) comprising: be arranged on magnet (108) on the traction element (103), be arranged on the magnetic switch of gearing assigned address, the signal generator that when magnetic switch is closed, sends trigger pip that links to each other with magnetic switch.

3. electrically driven curtain according to claim 2 is characterized in that, described magnetic switch is tongue tube (106).

4. electrically driven curtain according to claim 2 is characterized in that, described magnetic switch is hall device (206).

5. electrically driven curtain according to claim 1, it is characterized in that described position detecting device (201) comprising: be arranged on the optoelectronic switch (306) of gearing assigned address, the signal generator that when optoelectronic switch (306) is closed, sends trigger pip that links to each other with optoelectronic switch (306).

6. according to the described electrically driven curtain of the arbitrary claim of claim 1 to 5, it is characterized in that described assigned address comprises at least 2; Motor control module (202) makes motor (101) reduce rotating speed at described assigned address.

7. electrically driven curtain according to claim 6, it is characterized in that, described position detecting device (201) comprises the time calculating unit that the traveling time of curtain is carried out timing, according between the timing of time calculating unit institute, described position detecting device (201) judges whether the position of sending trigger pip is the assigned address that needs to reduce motor (101) rotating speed.

8. electrically driven curtain according to claim 6, it is characterized in that, described position detecting device (201) comprises the counting unit that the trigger pip of sending is counted, and described position detecting device (201) judges according to the count value of counting unit whether the position of sending trigger pip is the assigned address that needs reduce motor (101) rotating speed.