CN200959524Y - DC gate comprehensive controller - Google Patents
DC gate comprehensive controller Download PDFInfo
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- CN200959524Y CN200959524Y CN 200620065242 CN200620065242U CN200959524Y CN 200959524 Y CN200959524 Y CN 200959524Y CN 200620065242 CN200620065242 CN 200620065242 CN 200620065242 U CN200620065242 U CN 200620065242U CN 200959524 Y CN200959524 Y CN 200959524Y
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Abstract
A comprehensive control device for DC electric gate machine which consists of a power supply part, a driving control device and a DC electric machine. The DC electric machine and the driving control device are power supplied by the power supply part through the driving control device. The power supply part consists of a working transformer, a rectification filtering device, a charging device and a battery which can be charged repeatedly, a power supply switching and control device. The open and shut times of a rolling gate electric machine is no longer limited by the capacity of the battery due to that the utility model provides a working mode wherein the working transformer is connected with the battery through the power supply switching and control device to realize the working mode in which the working transformer is used as a main power supply and the battery is used as a reserve power supply. The utility model effectively overcomes the problem in original method wherein the open and shut times is limited duo to that the battery is used as the power supply. The utility model also provides more convenient and reliable using.
Description
Technical field
The utility model relates to a kind of Electrically operated gate/window, particularly relates to a kind of composite control apparatus of Electrically operated gate/window.
Background technology
Uninterrupted shutter door machine work is on the market now all realized the action of switch door basically by two kinds of frame modes: a kind of is the power of making the switch door with alternating current machine, and another kind is a power of making the switch door with direct current machine.With the uninterrupted duty of alternating current machine is to install alternating current that an inverter produces 220V additional to make power supply and use behind civil power.Another kind is a power of making the switch door with direct current machine, uninterrupted duty with direct current machine is to charge the battery with a charging transformer, just whether no matter have a power failure, the power supply of motor all is to be supplied with by battery, now on the market nearly all be a kind of like this.Obviously, the working power of above-mentioned dual mode all has problem, when adding inverter and make motor power with alternating current, when in case there be not (being mains failure) in alternating current, the work of just having no way of this shutter door machine can only be by manually realizing the Push And Release of shutter door machine, thereby bring great inconvenience to use, and owing to used inverter, its whole cost is also corresponding have been improved; And when adopting chargeable storage as motor power, because no matter whether have a power failure all is to provide power supply by storage battery, therefore the capacity and the life-span of the storage battery that is adopted just become a suitable stubborn problem, when adopting jumbo storage battery, the switch door number of times of motor can increase, but its cost has improved again much virtually, adopt the low capacity storage battery that the switch door number of times of motor is restricted, particularly long and can't in time charge for storage battery the time at the outage interruption duration, suitable of short duration of the time of its standby, simultaneously no matter be large-capacity battery or low capacity storage battery, owing to always be the employing storage battery power supply, therefore the charging and discharging of accumulator frequency can be considerably high, and the charging and discharging of accumulator number of times is limited, so the useful life of the storage battery that this mode adopted is also shorter accordingly, has increased the use cost of shutter door machine virtually.
Summary of the invention
The purpose of this utility model is the existence at the problems referred to above, provide a kind of by civil power directly power supply and storage battery with the duplicate supply mode of powering, simple and reliable for structure, can fully prolong storage battery useful life, stand-by time is longer, use cost is low direct current door machine composite control apparatus.
The purpose of this utility model is achieved through the following technical solutions:
A kind of direct current door machine composite control apparatus, comprise the power suppling part branch, driving control device, direct current machine, wherein power suppling part divides provides working power and provides working power to driving control device to direct current machine by driving control device, be characterized in that described power suppling part branch comprises Working transformer, straightening and filtering unit, but a charging device and a repeated multiple times storage batteries, power supply switches and control device, wherein the input of Working transformer is connected with the 220V alternating current, its first output is connected with the input of straightening and filtering unit, it provides the alternating current of a 26V for straightening and filtering unit, its second output is connected with the first input end of power supply switching and control device and provides the alternating current of a 13V for it, first output of straightening and filtering unit switches with the input of charging device and power supply and second input of control device is connected, the output of charging device is connected with the charging input end of storage battery, the output of storage battery and power supply switch and the 3rd input of control device is connected, and power supply switches and the output of control device is connected with driving control device respectively to reach by described driving control device and is connected with direct current machine and is respectively driving control device and direct current machine provides working power.
Wherein above-mentioned straightening and filtering unit comprises the rectification module and first filter capacitor, wherein two inputs of rectification module are connected with first output of Working transformer, its first output switches with power supply and second input and the charging module input of control device are connected, its another output head grounding, described first filter capacitor is parallel between two outputs of rectification module.
Above-mentioned power supply switches and control device comprises first relay, second relay, the 3rd relay and first rectifier diode, second filter capacitor, first resistance, wherein second output of Working transformer is connected with the normally opened contact of second relay, and this second output is connected and is connected behind first rectifier diode behind first resistance respectively and first relay again, second relay, the control pin of the 3rd relay connects and powers for described three relays, and another control pin ground connection of described three relays, and be parallel with second filter capacitor between the interface point of described first rectifier diode and first resistance and the ground, the public pin of described first relay is connected with driving control device, the normally-closed contact of described first relay is connected with the positive pole of storage battery, its normally opened contact is connected with first output of above-mentioned rectification module, the public pin of described second relay is connected with driving control device, its normally-closed contact is connected with the positive pole of storage battery, its normally opened contact is connected with second output of Working transformer, the public pin of described the 3rd relay is connected with driving control device, its normally-closed contact is connected with the negative pole of storage battery, its normally opened contact ground connection.
Above-mentioned driving control device comprises the voltage regulation filtering device that is used to provide at least two kinds of different voltage outputs, central processing unit, the remote signal importation, manual importation, stop portion, the bounce-back part is hampered, the switch motion control device, the overwinding-proof part, wherein the input of voltage regulation filtering device is connected with the public pin of above-mentioned second relay and provides working power by the switch motion control device for direct current machine, its first output is connected with described switch motion control device respectively, its second output is connected with the remote signal importation with central processing unit and switch motion control device respectively, and provide working power for central processing unit and switch motion control device and remote signal importation, described remote signal importation, manual input signal part, stop portion, the output of the bounce-back part that is hampered connects and by the processing of central processing unit pairing signal is used for controlling the action of direct current machine respectively with the corresponding pin of central processing unit, the input of described switch motion control device switches and control device with power supply respectively, the output of central processing unit is corresponding to be connected, its output is connected with direct current machine and switches and control device by power supply, the just commentaries on classics of the information Control direct current machine of central processing unit, counter-rotating and the action that stops, the output of described overwinding-proof part are connected with direct current machine and resemble to avoid the occurring pulleying sight according to the action size of the forward or reverse of detected signal controlling direct current machine.
Above-mentioned switch motion control device comprises the 4th relay, the 5th relay, the first insurance diode and the second insurance diode, wherein above-mentioned central processing unit opens the door, close the gate control signal output pin respectively by one drive circuit and described the 4th relay, the control pin of the 5th relay connects, described the 4th relay, another control pin of the 5th relay is connected with first output pin of above-mentioned voltage regulation filtering device respectively, described the 4th relay, the normally opened contact of the 5th relay switches with above-mentioned power supply respectively and the public pin of first relay of control device is connected, described the 4th relay, the normally-closed contact of the 5th relay is connected with the public pin of above-mentioned the 3rd relay respectively, and the public pin of described the 4th relay is connected with an input of direct current machine, the public pin of described the 5th relay is connected and is connected with this input of direct current machine behind the brake coil, and the described first insurance diode and the second insurance diode are parallel to respectively between two control pins of the 4th relay and the 5th relay.
The utility model is switched by a power supply with storage battery by Working transformer owing to employing and control device combines realizes being powered and the working method of storage battery do change stand-by power supply as the master by Working transformer, all be to power in most of the time by Working transformer, promptly directly being powered by civil power gives direct current door machine as opening, the power of closing the door, thereby the switch door number of times that makes the shutter door machine no longer is subjected to the restriction of battery capacity, effectively overcome original with storage battery as power supply the restricted problem of switch door number of times that power brought, stand-by power supply power when being the conduct power failure owing to storage battery simultaneously, both solved the problem that to control shutter door machine switch after original power failure that is produced when adding inverter power supply with manual mode by civil power, guarantee that it can easily and reliably utilize standby storage battery to be used as the power of switch door under the mains failure situation, it is more convenient reliable to guarantee that it uses, especially because storage battery is to use as deposit always, so the electric weight of its battery is all more full always, stand-by time after the power failure also can extend relatively, and under identical charge condition, reduced as standby charging and discharging of accumulator frequency is also corresponding, so also correspondingly increased the useful life of storage battery, effectively reduces use cost.
Describe basic structure of the present utility model and operation principle in detail below in conjunction with accompanying drawing:
Description of drawings
Fig. 1 is a structure composition frame chart of the present utility model;
Fig. 2 is an electrical schematic diagram of the present utility model.
Embodiment
As Fig. 1～shown in Figure 2, direct current door machine composite control apparatus described in the utility model comprises power suppling part branch, driving control device, direct current machine, wherein power suppling part divides provides working power and provides working power to driving control device to direct current machine by driving control device, it is characterized in that described power suppling part branch comprises Working transformer T
1, but straightening and filtering unit, charging device and a repeated multiple times storage batteries, power supply switch and control device, wherein Working transformer T
1Input be connected with the 220V alternating current, its first output is connected with the input of straightening and filtering unit, it provides the alternating current of a 26V for straightening and filtering unit, its second output is connected with the first input end of power supply switching and control device and provides the alternating current of a 13V for it, first output of straightening and filtering unit switches with the input of charging device and power supply and second input of control device is connected, the output of charging device is connected with the charging input end of storage battery, the output of storage battery and power supply switch and the 3rd input of control device is connected, and power supply switches and the output of control device is connected with driving control device respectively to reach by described driving control device and is connected with direct current machine and is respectively driving control device and direct current machine provides working power.Wherein above-mentioned straightening and filtering unit comprises rectification module G
1With the first filter capacitor C
1, rectification module G wherein
1Two inputs and Working transformer T
1First output connect, its first output is connected its another output head grounding, the described first filter capacitor C with second input and the charging module input of power supply switching and control device
1Be parallel to rectification module G
1Two outputs between.Above-mentioned power supply switches and control device comprises the first relay K A
2, the second relay K A
4, the 3rd relay K A
5And the first rectifier diode D
8, the second filter capacitor C
15, first resistance R
7, Working transformer T wherein
1Second output and the second relay K A
4Normally opened contact connect and this second output first rectifier diode D that connects
8After first resistance R of connecting again
7After respectively with the first relay K A
2, the second relay K A
4, the 3rd relay K A
5Control pin connect and give described three relays power supply, and another control pin ground connection of described three relays, and the described first rectifier diode D
8With first resistance R
7Interface point and ground between be parallel with the second filter capacitor C
15, the described first relay K A
2Public pin be connected the described first relay K A with driving control device
2Normally-closed contact be connected its normally opened contact and above-mentioned rectification module G with the positive pole of storage battery
1First output connect the described second relay (KA
4) public pin be connected with driving control device, its normally-closed contact is connected with the positive pole of storage battery, its normally opened contact and Working transformer T
1Second output connect described the 3rd relay K A
5Public pin be connected with driving control device, its normally-closed contact is connected with the negative pole of storage battery, its normally opened contact ground connection.Above-mentioned driving control device comprises voltage regulation filtering device, the central processor CPU IC that is used to provide at least two kinds of different voltage outputs
1, the remote signal importation, manually importation, stop portion, be hampered bounce-back part, switch motion control device, overwinding-proof partly, the wherein input and the above-mentioned second relay K A of voltage regulation filtering device
4Public pin connect and provide working power for direct current machine by the switch motion control device, its first output is connected with described switch motion control device respectively, its second output respectively with central processor CPU IC
1Reach the switch motion control device and be connected, and be central processor CPU IC with the remote signal importation
1And switch motion control device and remote signal importation provide working power, described remote signal importation, manually input signal part, stop portion, be hampered bounce-back output partly respectively with central processor CPU IC
1Corresponding pin connect and by central processor CPU IC
1Processing and pairing signal is used for controlling the action of direct current machine, the input of described switch motion control device respectively with power supply switching and control device, central processor CPU IC
1Corresponding connection of output, its output is connected with direct current machine and by power supply switching and control device, central processor CPU IC
1The action of just changeing, reversing and stop of information Control direct current machine, the output of described overwinding-proof part be connected with direct current machine and according to the action size of the forward or reverse of detected signal controlling direct current machine to avoid occurring the pulleying phenomenon.This moment, described central processor CPU adopted the intelligent control chip of Microchip Technology, and entire chip has stable performance, and is low in energy consumption, function congruence advantage, thus make the service behaviour of complete machine more reliable.Live part is that whole charging process is divided three phases according to a kind of aptitude chargeable circuit of the charge characteristic design of battery, in the low current charge stage, cries again and safeguards charging; The large current charge stage, cry the quick charge stage again, in the floating charge stage, cry the boost charge stage again.Because the control device the inside has carried the storage battery of two 12V/4AH and the toroidal transformer of a 200VA, when civil power has electricity, on the one hand, the power supply of rectification is given whole device power supply after the transformer step-down, on the other hand, charge the battery by charging circuit again, detect voltage according to interlock circuit and whether be full of, when detect be full of after, enter floating charge state automatically, allow small electric current replenish battery from loss, battery keeps completely state with standby when civil power is arranged.Have besides civil power after the transformer step-down to the motor power supply that is used as power, so the number of times of switch door is not subjected to the restriction of battery capacity.So just overcome a restricted shortcoming of switch door number of times that control device brought with storage battery.After having a power failure, storage battery is transformed into power supply state automatically, and after sending a telegram here next time, is transformed into transformer step-down power supply again automatically.And storage battery is to make deposit to use always; so battery capacity is more sufficient; the time of standby is corresponding just more long after having a power failure; be exactly also to have added a under-voltage protecting circuit in the utility model in addition; long when interruption duration, when causing battery capacity not enough, this device automatically locks; the signal that stops to import is to external world handled, and can protect battery can not lose the ability of store electrical energy because of overdischarge better.Above-mentioned switch motion control device comprises the 4th relay K A
1, the 5th relay K A
3, the first insurance diode D
1Reach the second insurance diode D
4, wherein above-mentioned central processor CPU IC
1Open the door, close the gate control signal output pin respectively by one drive circuit and described the 4th relay K A
1, the 5th relay K A
3Control pin connect described the 4th relay K A
1, the 5th relay K A
3Another control pin be connected described the 4th relay K A respectively with first output pin of above-mentioned voltage regulation filtering device
1, the 5th relay K A
3Normally opened contact switch with above-mentioned power supply respectively and the first relay K A of control device
2Public pin connect described the 4th relay K A
1, the 5th relay K A
3Normally-closed contact respectively with above-mentioned the 3rd relay K A
5Public pin connect and described the 4th relay K A
1Public pin be connected described the 5th relay K A with an input of direct current machine
3The public pin brake coil L that connects
1The back is connected with this input of direct current machine, the described first insurance diode D
1With the second insurance diode D
4Be parallel to the 4th relay K A respectively
1And the 5th relay K A
3Two control pins between.Wherein charging device described in the utility model, voltage regulation filtering device, stop portion, the bounce-back part that is hampered, overwinding-proof part etc. are prior art, according to shown in Figure 2, those of ordinary skill does not add creative work and just can obtain, it is not described in detail at this, this moment, operation principle of the present utility model and process were that civil power is through Working transformer TR
1Step-down and output, the output tapping point of Working transformer outputs to KA
4The normal battle of relay, and through diode D
8Rectification and filter capacitor C
15After the filtering, through resistance R
7Give KA respectively
5, KA
4And KA
2Three relay power supplies, these three relays are that just work of civil power is arranged.The 26V alternating current of transformer output send rectification module G in addition
1Carry out rectification.Filter capacitor C
1Receive KA after the filtering
2Normal battle, KA
2Normally closed point connect the positive pole of storage battery.Common point outputs to KA
3, KA
1Normal battle, for machine operation provides power supply.KA
3, KA
1Normally closed point meet KA
5Common point (H point), and KA
5Normal battle connect power cathode, normally closed point connects the negative pole of storage battery.Relay K A
4And KA
2Normally closed point connect the positive pole of storage battery.KA
4Common point meet diode D
7Positive pole, through C
2Filtering is after W
2Provide power supply to KA after the Voltage stabilizing module voltage stabilizing
1And KA
3Coil and central processor CPU, diode D
1, D
4Be the insurance diode, protection triode T
1And T
2Do not puncture because of the instantaneous pressure that produces.Open and close thresholding bit position is such, and when not spacing, two position-limit foots are respectively by resistance row PR
1Move high level to through the 5V power supply.After the limit switch action, often open and become normally closed ground connection, this moment, this pin position was a low level, realize spacing, three switch S
4, S
5, S
6Be out, stop, close the input of signal respectively, the infrared ray protection is realized by the tripod of CPU, arranges PR by the 5V power supply through resistance at ordinary times
2Move high level to.When at closing time and this pin trigger when being grounded through infrared switch.CPU will change the output pin position, become to close the door to opening the door.Realize defencive function.Under-voltage part is by VY
1Voltage-stabiliser tube detects that cell voltage realizes, after cell voltage is lower than 18V, the not conducting of VY1 voltage-stabiliser tube, this moment triode Q
5End, the 12V supply socket is through resistance R
30, R
31Triode Q is given in the shunting back
6Power supply, the C point voltage is because triode Q
6Conducting and be low level, circuit is in always and stops state, plays the protection galvanic action.
In sum, the utility model is mostly to be innovations on a kind of textural association, and Working transformer has been added in control device, when introducing Working transformer, at first will solve two problems; The absorption problem of an electromotive force that to be direct current machine produced when being generator work, carbon brush contacted the electric spark that the produced interference problem to romote controlled receiving system when another was common DC motor work with phase changer.The measure that solves these two problems in the utility model is, motor is used two pairs of magnetic poles instead and need not a pair of magnetic pole, aspect remote control distance, reduce entire gain on the one hand, on the other hand, change chip internal program and operating frequency are so just ingenious and solved above-mentioned two problems reliably.
Claims (5)
1, a kind of direct current door machine composite control apparatus, comprise power suppling part branch, driving control device, direct current machine, wherein power suppling part divides provides working power and provides working power to driving control device to direct current machine by driving control device, it is characterized in that described power suppling part branch comprises Working transformer (T
1), but straightening and filtering unit, charging device and a repeated multiple times storage batteries, power supply switch and control device, wherein Working transformer (T
1) input be connected with the 220V alternating current, its first output is connected with the input of straightening and filtering unit, it provides the alternating current of a 26V for straightening and filtering unit, its second output is connected with the first input end of power supply switching and control device and provides the alternating current of a 13V for it, first output of straightening and filtering unit switches with the input of charging device and power supply and second input of control device is connected, the output of charging device is connected with the charging input end of storage battery, the output of storage battery and power supply switch and the 3rd input of control device is connected, and power supply switches and the output of control device is connected with driving control device respectively to reach by described driving control device and is connected with direct current machine and is respectively driving control device and direct current machine provides working power.
2, direct current door machine composite control apparatus according to claim 1 is characterized in that described above-mentioned straightening and filtering unit comprises rectification module (G
1) and the first filter capacitor (C
1), rectification module (G wherein
1) two inputs and Working transformer (T
1) first output connect, its first output is connected its another output head grounding, the described first filter capacitor (C with second input and the charging module input of power supply switching and control device
1) be parallel to rectification module (G
1) two outputs between.
3, direct current door machine composite control apparatus according to claim 1 and 2 is characterized in that above-mentioned power supply switches and control device comprises the first relay (KA
2), the second relay (KA
4), the 3rd relay (KA
5) and the first rectifier diode (D
8), the second filter capacitor (C
15), the first resistance (R
7), Working transformer (T wherein
1) second output and the second relay (KA
4) normally opened contact connect and this second output first rectifier diode (D that connects
8) after the first resistance (R that connects again
1) after respectively with the first relay (KA
2), the second relay (KA
4), the 3rd relay (KA
5) control pin connect and give described three relays power supply, and another control pin ground connection of described three relays, and the described first rectifier diode (D
8) and the first resistance (R
7) interface point and ground between be parallel with the second filter capacitor (C
15), the described first relay (KA
2) public pin be connected the described first relay (KA with driving control device
2) normally-closed contact be connected its normally opened contact and above-mentioned rectification module (G with the positive pole of storage battery
1) first output connect the described second relay (KA
4) public pin be connected with driving control device, its normally-closed contact is connected with the positive pole of storage battery, its normally opened contact and Working transformer (T
1) second output connect described the 3rd relay (KA
5) public pin be connected with driving control device, its normally-closed contact is connected with the negative pole of storage battery, its normally opened contact ground connection.
4, direct current door machine composite control apparatus according to claim 3 is characterized in that above-mentioned driving control device comprises voltage regulation filtering device, the central processor CPU (IC that is used to provide at least two kinds of different voltage outputs
1), the remote signal importation, manually importation, stop portion, be hampered bounce-back part, switch motion control device, overwinding-proof partly, the wherein input and the above-mentioned second relay (KA of voltage regulation filtering device
4) public pin connect and provide working power for direct current machine by the switch motion control device, its first output is connected with described switch motion control device respectively, its second output respectively with central processor CPU (IC
1) and the switch motion control device be connected with the remote signal importation, and be central processor CPU (IC
1) and switch motion control device and remote signal importation working power is provided, described remote signal importation, manually input signal part, stop portion, be hampered bounce-back output partly respectively with central processor CPU (IC
1) corresponding pin connect and by central processor CPU (IC
1) processing and pairing signal is used for controlling the action of direct current machine, the input of described switch motion control device respectively with power supply switching and control device, central processor CPU (IC
1) corresponding connection of output, its output is connected with direct current machine and by power supply switching and control device, central processor CPU (IC
1) the action of just changeing, reversing and stop of information Control direct current machine, the output of described overwinding-proof part is connected with direct current machine and resembles to avoid the occurring pulleying sight according to the action size of the forward or reverse of detected signal controlling direct current machine.
5, direct current door machine composite control apparatus according to claim 4 is characterized in that above-mentioned switch motion control device comprises the 4th relay (KA
1), the 5th relay (KA
3), the first insurance diode (D
1) and the second insurance diode (D
4), wherein above-mentioned central processor CPU (IC
1) open the door, close the gate control signal output pin respectively by one drive circuit and described the 4th relay (KA
1), the 5th relay (KA
3) control pin connect described the 4th relay (KA
1), the 5th relay (KA
3) another control pin be connected described the 4th relay (KA respectively with first output pin of above-mentioned voltage regulation filtering device
1), the 5th relay (KA
3) normally opened contact switch with above-mentioned power supply respectively and the first relay (KA of control device
2) public pin connect described the 4th relay (KA
1), the 5th relay (KA
3) normally-closed contact respectively with above-mentioned the 3rd relay (KA
5) public pin connect and described the 4th relay (KA
1) public pin be connected described the 5th relay (KA with an input of direct current machine
3) the public pin brake coil (L that connects
1) then be connected the described first insurance diode (D with this input of direct current machine
1) and the second insurance diode (D
4) be parallel to the 4th relay (KA respectively
1) and the 5th relay (KA
3) two control pins between.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620065242 CN200959524Y (en) | 2006-09-30 | 2006-09-30 | DC gate comprehensive controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620065242 CN200959524Y (en) | 2006-09-30 | 2006-09-30 | DC gate comprehensive controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200959524Y true CN200959524Y (en) | 2007-10-10 |
Family
ID=38786404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620065242 Expired - Lifetime CN200959524Y (en) | 2006-09-30 | 2006-09-30 | DC gate comprehensive controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200959524Y (en) |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Zhongshan giant East yuan remote control door Co., Ltd. Assignor: Liu Yonghua Contract fulfillment period: 2007.10.24 to 2012.10.30 Contract record no.: 2008440000529 Denomination of utility model: DC gate comprehensive controller Granted publication date: 20071010 License type: Exclusive license Record date: 20081211 |
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Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2007.10.24 TO 2012.10.30; CHANGE OF CONTRACT Name of requester: ZHONGSHAN JUGUANG-DONGYUAN REMOTE CONTROL DOORS CO Effective date: 20081211 |
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