CN201821090U - Direct-current motor protector and glass lifting device - Google Patents
Direct-current motor protector and glass lifting device Download PDFInfo
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- CN201821090U CN201821090U CN2010205458403U CN201020545840U CN201821090U CN 201821090 U CN201821090 U CN 201821090U CN 2010205458403 U CN2010205458403 U CN 2010205458403U CN 201020545840 U CN201020545840 U CN 201020545840U CN 201821090 U CN201821090 U CN 201821090U
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Abstract
The utility model discloses a direct-current motor protector and a glass lifting device. The direct-current motor protector comprises a direct-current motor detecting unit and a control switch unit which are connected mutually, the direct-current motor detecting unit detects working current signals of a direct-current motor and outputs trigger signals to the control switch unit when working current of the direct-current motor is abnormal, and the control switch unit switches off power supply of the direct-current motor when receiving the trigger signals and recovers the power supply of the direct-current motor when the trigger signals are disappeared. The glass lifting device comprises a lifting direct-current motor unit and a lifting switch unit, the lifting direct-current motor unit is connected with a power source via the lifting switch unit and comprises a direct-current motor, and the lifting switch unit is grounded via the direct-current motor protector. The direct-current motor protector and the glass lifting device can effectively prevent the direct-current motor from being burnt down during stalling, and have the advantages of fine protection effect, safety, reliability, low cost and simple structure.
Description
Technical field
The utility model relates to engineering machinery and automotive field, is specifically related to a kind of glass lifting device.
Background technology
At present engineering machinery and automotive field are used a large amount of direct current machines, for example glass lifting motor, rain shaving electrical machine etc., and configuration of automobiles difference, and the quantity of direct current machine is also different.Protection generally realizes by the automobile general-purpose fuse glass lifting device of engineering machinery and automotive field to direct current machine at present; fuse is more effective to the short circuit protective ratio of glass lifting device; immediate current is very big during the short circuit of glass lifting device; insure very fast fusing, reach the purpose of protection motor.
But this guard method recovers after can not recovering at the circuit of glass lifting device automatically; need to change fuse; and this guard method can only be protected the very big situation of immediate current; other situation is difficult to protection; by stall the time, motor can generate heat as the lifting decorum, and insurance can not fuse; time one is long, and motor will burn.But for engineering machinery and automotive field, the work under bad environment of general direct current machine, direct current machine moves under the situation of the overload of being everlasting, and is easy to burn motor, has badly influenced the reliability of glass lifting device.
The utility model content
The utility model is at the shortcoming of above-mentioned prior art, provides a kind of and burnt can effectively prevent the direct current machine stall time, protects direct current machine protector effective, safe and reliable, with low cost, simple in structure and glass lifting device.
In order to solve the problems of the technologies described above; the technical solution adopted in the utility model is: a kind of direct current machine protector; it comprises interconnective direct current machine detecting unit and control switch unit; described direct current machine detecting unit detects the operating current signal of direct current machine and the output triggering signal occurs when unusual to control switch unit at the operating current of direct current machine, and described control switch unit cuts off the power supply supply of direct current machine when receiving triggering signal, the power supply supply of recovery direct current machine when Triggerless.
Further improvement as the utility model direct current machine protector:
Described direct current machine detecting unit comprises interconnective current acquisition unit and comparing unit, described current acquisition unit links to each other with described direct current machine, described comparing unit links to each other with described control switch unit, described current acquisition unit exports comparing unit to after obtaining the operating current of described direct current machine and being converted to voltage, described comparing unit compares voltage and a reference voltage of input, and exports triggering signal to described control switch unit at the voltage that obtains during greater than reference voltage.
Described control switch unit comprises the mains switch of interconnective trigger control unit and control direct current machine operating state, described trigger control unit links to each other with described comparing unit, the output information of the described comparing unit of described trigger control unit timing scan and according to the on off operating mode of this output information control mains switch.
Described mains switch is a cmos switch.
The utility model also provides a kind of glass lifting device; comprise direction switch unit and lifting direct current machine unit; described lifting direct current machine unit links to each other with power supply by the direction switch unit; described lifting direct current machine unit comprises at least one direct current machine; described direction switch unit is by a direct current machine protector ground connection, and described direct current machine protector is above-mentioned direct current machine protector.
Further improvement as the utility model glass lifting device:
Described lifting direct current machine unit comprises left lifting motor and right lifting motor, described direction switch unit comprises left direction switch, a left side right direction switch of control and right direction switch, described left direction switch is controlled the on off operating mode that right direction switch is controlled right direction switch by a left side, described left lifting motor links to each other with left direction switch, and described right lifting motor links to each other with right direction switch.
Described direction switch unit links to each other with power supply by a fuse.
The utlity model has following advantage:The power supply supply that the control switch unit of direct current machine protector of the present utility model is cut off the power supply supply of direct current machine during greater than reference voltage, recovered direct current machine during less than reference voltage at described output voltage at described output voltage; burnt in the time of can effectively preventing the direct current machine stall, had effective, safe and reliable, with low cost, the advantage of simple structure of protection.Control switch unit comprises interconnective trigger control unit and mains switch, the comparative result of trigger control unit timing scan voltage comparison unit and according to the on off operating mode of comparative result control mains switch, reliable trigger, energy savings; Mains switch is the CMOS pipe of low on-resistance, and is simple and compact for structure, conducting resistance is little, can effectively guarantee the driving force of direct current machine.Therefore glass lifting device of the present utility model also possesses the above-mentioned advantage of direct current machine protector simultaneously owing to have the direct current machine protector; Left side direction switch is controlled the on off operating mode that right direction switch is controlled right direction switch by a left side, thereby realizes the interlock control of left lifting motor and right lifting motor, intelligence more convenient to operate; The direction switch unit links to each other with power supply by a fuse, can effectively protect direct current machine when short circuit.
Description of drawings
Fig. 1 is the frame structure schematic diagram of the direct current machine protector of the utility model embodiment;
Fig. 2 is the circuit theory schematic diagram of the direct current machine protector of the utility model embodiment;
Fig. 3 is the circuit theory schematic diagram of the glass lifting device of the utility model embodiment.
Marginal data: 1, direct current machine detecting unit; 11, current acquisition unit; 12, comparing unit; 2, control switch unit; 21, trigger control unit; 22, mains switch; 3, lifting direct current machine unit; 31, left lifting motor; 32, right lifting motor; 4, direction switch unit; 41, left direction switch; 42, the right direction switch of left side control; 43, right direction switch; 5, direct current machine protector; 6, fuse.
Embodiment
As shown in Figure 1; the direct current machine protector of the utility model embodiment comprises interconnective direct current machine detecting unit 1 and control switch unit 2; direct current machine detecting unit 1 detects the operating current signal of direct current machine and the output triggering signal occurs when unusual to control switch unit 2 at the operating current of direct current machine, and control switch unit 2 cuts off the power supply supply of direct current machine when receiving triggering signal, the power supply supply of recovery direct current machine when Triggerless.
In the present embodiment, direct current machine detecting unit 1 comprises interconnective current acquisition unit 11 and comparing unit 12, current acquisition unit 11 links to each other with direct current machine, comparing unit 12 links to each other with control switch unit 2, current acquisition unit 11 exports comparing unit 12 to after obtaining the operating current of direct current machine and being converted to voltage, comparing unit 12 compares voltage and a reference voltage of input, and exports triggering signals to control switch unit 2 at the voltage that obtains during greater than reference voltage.Control switch unit 2 comprises the mains switch 22 of interconnective trigger control unit 21 and control direct current machine operating state, trigger control unit 21 links to each other with comparing unit 12, the output information of trigger control unit 21 timing scan comparing units 12 and according to the on off operating mode of this output information control mains switch 22.
As shown in Figure 2, have 2 groups of direct current machine detecting units 1 in the circuit diagram in the present embodiment, direct current machine detecting unit 1 links to each other with direct current machine by the OUT port.Current acquisition unit 11 is made up of earth resistance R13 and R4 respectively, and comparing unit 12 mainly is made up of comparator U2A and U3A respectively, and U2A and U3A all adopt comparator LM358.The operating current of the operating current of direct current machine passes through earth resistance R13, earth resistance R4 ground connection respectively, so earth resistance R13 and R4 can be converted to the operating current of direct current machine No. 2 ports that export comparator U2A and U3A behind the voltage respectively to.No. 3 ports of U2A and U3A link to each other with R2 respectively at earth resistance R12, and earth resistance R12 links to each other with VCC with R2 one end, other end ground connection, thus provide reference voltage for voltage comparison unit 2.Trigger control unit 21 mainly is made up of timer and triode, and timer adopts the NE556 chip, and triode adopts GAA745.Mains switch 22 is made up of the CMOS pipe Q2 and the Q4 of low on-resistance respectively.
The operation principle of the direct current machine protector of present embodiment is as follows: when direct current machine is in normal operating conditions, and the output of direct current machine detecting unit 1 Triggerless, trigger control unit 31 does not trigger, and direct current machine runs well.When direct current machine generation stall, the operating current of direct current machine increases, and current acquisition unit 11 obtains the operating current of direct current machine, and comparing unit 12 is to control switch unit 2 output triggering signals.Cut off the power supply supply of direct current machine when trigger control unit 31 is received triggering signal, recover the power supply supply that just often recovers direct current machine until the operating current of direct current machine.
As shown in Figure 3; the glass lifting device of the utility model embodiment comprises lifting direct current machine unit 3 and direction switch unit 4; lifting direct current machine unit 3 links to each other with power supply by direction switch unit 4; lifting direct current machine unit 3 comprises at least one direct current machine; direction switch unit 4 is by direct current machine protector 5 ground connection, and direct current machine protector 5 is above-mentioned direct current machine protector.In the present embodiment, lifting direct current machine unit 3 comprises left lifting motor 31 and 32 two lifting motors of right lifting motor.Direction switch unit 4 comprises left direction switch 41, a left side right direction switch 42 of control and right direction switch 43, left side direction switch 41 is by the on off operating mode of the right direction switch 43 of right direction switch 42 controls of left side control, left side lifting motor 31 links to each other with left direction switch 41, and right lifting motor 32 links to each other with right direction switch 43.Direction switch unit 4 links to each other with power supply by a fuse 6.
The operation principle of the glass lifting device of the utility model embodiment is as follows: left direction switch 41 can be controlled left lifting motor 31 and clockwise rotate and rotate counterclockwise, the action that corresponding respectively left side glass rises and falls, right direction switch 43 can be controlled right lifting motor 32 and clockwise rotate and rotate counterclockwise, the action that corresponding respectively right side glass rises and falls, the ground connection of 42 right direction switches 43 of control of the right direction switch of left side control, right direction switch 43 just can be controlled right lifting motor 32 and clockwise rotates and rotate counterclockwise when having only right direction switch 42 ground connection of left side control.When left lifting motor 31 or right lifting motor 32 generation stalls; the electric current that then flows through direct current machine protector 5 can increase; thereby automatic disconnection ground connection is recovered just often until the electric current of left lifting motor 31 and right lifting motor 32, and direct current machine protector 5 just continues maintenance ground connection.If lifting direct current machine unit 3 or direction switch unit 4 are short-circuited, then fuse 6 fuses automatically, thereby reaches the purpose of protection lifting direct current machine unit 3 and direction switch unit 4.
The above only is a preferred implementation of the present utility model, and protection range of the present utility model also not only is confined to the foregoing description, and all technical schemes that belongs under the utility model thinking all belong to protection range of the present utility model.Should be pointed out that for those skilled in the art in the some improvements and modifications that do not break away under the utility model principle prerequisite, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (7)
1. direct current machine protector; it is characterized in that: it comprises interconnective direct current machine detecting unit (1) and control switch unit (2); described direct current machine detecting unit (1) detects the operating current signal of direct current machine and the output triggering signal occurs when unusual to control switch unit (2) at the operating current of direct current machine, and described control switch unit (2) cuts off the power supply supply of direct current machine when receiving triggering signal, the power supply supply of recovery direct current machine when Triggerless.
2. direct current machine protector according to claim 1; it is characterized in that: described direct current machine detecting unit (1) comprises interconnective current acquisition unit (11) and comparing unit (12); described current acquisition unit (11) links to each other with described direct current machine; described comparing unit (12) links to each other with described control switch unit (2); described current acquisition unit (11) exports comparing unit (12) to after obtaining the operating current of described direct current machine and being converted to voltage; described comparing unit (12) compares voltage and a reference voltage of input, and exports triggering signal to described control switch unit (2) at the voltage that obtains during greater than reference voltage.
3. direct current machine protector according to claim 2; it is characterized in that: described control switch unit (2) comprises the mains switch (22) of interconnective trigger control unit (21) and control direct current machine operating state; described trigger control unit (21) links to each other with described comparing unit (12), the output information of the described comparing unit of described trigger control unit (21) timing scan (12) and according to the on off operating mode of this output information control mains switch (22).
4. direct current machine protector according to claim 3 is characterized in that: described mains switch (22) is a cmos switch.
5. glass lifting device; comprise lifting direct current machine unit (3) and direction switch unit (4); described lifting direct current machine unit (3) links to each other with power supply by direction switch unit (4); described lifting direct current machine unit (3) comprises at least one direct current machine; it is characterized in that: described direction switch unit (4) is by a direct current machine protector (5) ground connection, and described direct current machine protector (5) is any described direct current machine protector of claim 1 ~ 4.
6. glass lifting device according to claim 5, it is characterized in that: described lifting direct current machine unit (3) comprises left lifting motor (31) and right lifting motor (32), described direction switch unit (4) comprises left direction switch (41), left side control right direction switch (42) and right direction switch (43), described left direction switch (41) is controlled the on off operating mode of right direction switch (43) by a left side right direction switch of control (42), described left lifting motor (31) links to each other with left direction switch (41), and described right lifting motor (32) links to each other with right direction switch (43).
7. according to claim 5 or 6 described glass lifting devices, it is characterized in that: described direction switch unit (4) links to each other with power supply by a fuse (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205458403U CN201821090U (en) | 2010-09-28 | 2010-09-28 | Direct-current motor protector and glass lifting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205458403U CN201821090U (en) | 2010-09-28 | 2010-09-28 | Direct-current motor protector and glass lifting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201821090U true CN201821090U (en) | 2011-05-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205458403U Expired - Fee Related CN201821090U (en) | 2010-09-28 | 2010-09-28 | Direct-current motor protector and glass lifting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201821090U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102323551A (en) * | 2011-09-14 | 2012-01-18 | 开源集成电路(苏州)有限公司 | Circuit for detecting locked point current of micro motor |
| CN102518353A (en) * | 2012-01-05 | 2012-06-27 | 安徽华菱汽车有限公司 | Window lifting in-place intelligent control circuit without limit switch |
-
2010
- 2010-09-28 CN CN2010205458403U patent/CN201821090U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102323551A (en) * | 2011-09-14 | 2012-01-18 | 开源集成电路(苏州)有限公司 | Circuit for detecting locked point current of micro motor |
| CN102518353A (en) * | 2012-01-05 | 2012-06-27 | 安徽华菱汽车有限公司 | Window lifting in-place intelligent control circuit without limit switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SANY AUTOMOBILE MANUFACTURING CO., LTD. Free format text: FORMER OWNER: SANYI HEAVY INDUSTRY CO LTD Effective date: 20130510 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130510 Address after: 410100 Changsha economic and Technological Development Zone, Hunan City, the 31 industrial city Patentee after: SANY Automobile Manufacturing Co., Ltd. Address before: 410100 31 industrial city, Changsha economic and Technological Development Zone, Hunan, Changsha Patentee before: Sanyi Heavy Industry Co., Ltd. |
|
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: HUNAN AUTOMOBILE MANUFACTURING CO., LTD. Assignor: SANY Automobile Manufacturing Co., Ltd. Contract record no.: 2014430000030 Denomination of utility model: Direct-current motor protector and glass lifting device Granted publication date: 20110504 License type: Exclusive License Record date: 20140415 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110504 Termination date: 20140928 |
|
| EXPY | Termination of patent right or utility model |