CN212849967U - 20W hand generator with automatic output voltage switching function - Google Patents
20W hand generator with automatic output voltage switching function Download PDFInfo
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- CN212849967U CN212849967U CN202021741089.4U CN202021741089U CN212849967U CN 212849967 U CN212849967 U CN 212849967U CN 202021741089 U CN202021741089 U CN 202021741089U CN 212849967 U CN212849967 U CN 212849967U
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Abstract
The utility model provides a 20W hand generator of output voltage automatic switch-over. The 20W hand generator with the automatically switched output voltage comprises a shell group; the three-phase permanent magnet brushless motor is arranged in the shell assembly; the rectification voltage-stabilizing circuit board is arranged in the shell assembly and is connected with the three-phase permanent magnet brushless motor; the input cable is arranged on one side of the shell assembly, and one end of the input cable extends into the shell assembly and is connected with the rectification voltage stabilizing circuit board; the gear set is arranged in the shell set and is connected with the three-phase permanent magnet brushless motor; the crank set is rotatably installed on one side of the shell set and is connected with the gear set. The utility model provides an output voltage automatic switch-over's 20W hand generator has simple structure, advantage that the reliability is high.
Description
Technical Field
The utility model relates to a generator technical field especially relates to a 20W hand generator of output voltage automatic switch-over.
Background
The hand generator is not different from the common generator, namely the coil rotates in the magnetic field, but the power is the manpower. A portable hand-operated power generation and rechargeable emergency power supply. Under the condition of no commercial power and oil power generation in any corner of the world, the electric power can be manually generated to be supplied to various electronic products. The device can be actively applied to the states of field operations, field investigation, rescue actions, natural disasters, survival training, emergency communication, long-term power shortage, traveling, emergency power utilization and the like. The portable power supply device mainly supplies power or charges portable products such as a low-power communication radio station, an interphone, a notebook computer, a PAD, a mobile phone, a video camera, a digital camera, a music CD, an MP4, an MP3, a portable mobile television, a DVD, a radio, flashlight illumination, various lamps, electric tools, an automobile, various measuring instruments and the like. Can be directly charged into various batteries such as lithium batteries, nickel-metal hydride batteries, lead-acid batteries and the like.
The 20W hand generator is mainly suitable for the purposes of emergency power supply of electric equipment, battery charging and the like, and when the hand generator is used for charging batteries, the specifications of the batteries are various, so that the hand generator needs to output in multiple ways. When 14.4V batteries and 7.2V batteries are charged by the conventional hand-operated generator, 16V and 8V voltage stabilizing circuits are formed by two voltage stabilizing circuits, and the hand-operated generator needs to be matched with two cables with different core sequences for replacing output, so that the structure is complex, the number of accessories is large, and the use is inconvenient.
Therefore, there is a need to provide a new 20W hand generator with automatic output voltage switching to solve the above-mentioned technical problems.
SUMMERY OF THE UTILITY MODEL
The utility model provides a technical problem provide a simple structure, output voltage automatic switch-over's 20W hand generator that the reliability is high.
For solving the technical problem, the utility model provides an output voltage automatic switch-over's 20W hand generator includes:
a housing group;
the three-phase permanent magnet brushless motor is arranged in the shell assembly;
the rectification voltage-stabilizing circuit board is arranged in the shell assembly and is connected with the three-phase permanent magnet brushless motor;
the input cable is arranged on one side of the shell assembly, and one end of the input cable extends into the shell assembly and is connected with the rectification voltage stabilizing circuit board;
the gear set is arranged in the shell set and is connected with the three-phase permanent magnet brushless motor;
the crank set is rotatably installed on one side of the shell set and is connected with the gear set.
Preferably, a rotating speed display board is installed in the shell group and connected with the gear group.
Preferably, the rectification voltage-stabilizing circuit on the rectification voltage-stabilizing circuit board consists of a full-bridge rectification circuit formed by a diode SM3200AF, an overvoltage protection circuit formed by a triode AOD409 and a diode 1N4747, and a voltage-stabilizing circuit formed by a voltage-stabilizing chip LT1185I and a relay HM 4100F-N.
Preferably, the rectifying and voltage stabilizing circuit on the rectifying and voltage stabilizing circuit board can automatically switch the output voltage value according to the load voltage of the battery.
Preferably, the crank group includes the outer pole, the spout has been seted up to the bottom of outer pole, slidable mounting has the slide bar in the spout, the bottom of slide bar extends to the spout is outer and be connected with the handle, the fixing base is installed to one side of outer pole, set up threaded hole on the fixing base, the screw hole with the spout is linked together, threaded hole installs the screw rod, the one end of screw rod extends to in the spout and with the slide bar contacts, the other end of threaded rod extends to the knob is installed outside the screw hole.
Preferably, one side of the sliding rod, which is far away from the fixing seat, is provided with a limiting groove, and a limiting block is fixedly mounted on the inner wall of one side of the sliding groove and is matched with the limiting groove.
Preferably, one side of the sliding rod, which is close to the screw rod, is polished into a rough surface.
Compared with the prior art, the utility model provides an output voltage automatic switch-over's 20W hand generator has following beneficial effect:
the utility model provides a 20W hand generator with automatic switching of output voltage, which can automatically switch and output 8V or 16V voltage value according to the voltage of a battery load, and only one output cable is needed to output two voltages; the volume and the weight of the hand generator are reduced under the condition of not reducing the output, the cable accessories of the hand generator are also reduced, the structure is simple, and the reliability is high.
Drawings
Fig. 1 is a schematic structural diagram of a preferred embodiment of a 20W hand generator with automatic output voltage switching provided by the present invention;
fig. 2 is a schematic structural diagram of a second embodiment of a 20W hand generator with automatically switched output voltages according to the present invention;
FIG. 3 is a circuit diagram of an overvoltage protection circuit;
FIG. 4 is a three-phase rectifier circuit diagram;
FIG. 5 is a diagram of a voltage regulator circuit.
Reference numbers in the figures: 1. the motor comprises a shell group, a three-phase permanent magnet brushless motor, a rotating speed display board, a rectifying and voltage stabilizing circuit board, a gear group, an input cable, a crank group, a gear 71, an outer rod, a gear 72, a sliding groove, a gear 73, a sliding rod, a gear 74, a handle, a gear 75, a limiting groove, a limiting block 76, a limiting block 77, a fixing seat, a gear 78, a threaded hole, a gear 79, a screw 710 and a knob.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and embodiments.
The first embodiment:
referring to fig. 1, fig. 3, fig. 4 and fig. 5, in a first embodiment of the present invention, a 20W hand generator with automatically switched output voltages includes:
a housing group 1;
the three-phase permanent magnet brushless motor 2 is arranged in the shell assembly 1;
the rectification voltage-stabilizing circuit board 4 is installed in the shell assembly 1, and the rectification voltage-stabilizing circuit board 4 is connected with the three-phase permanent magnet brushless motor 2;
an input cable 6, wherein the input cable 6 is installed at one side of the housing set 1, and one end of the input cable 6 extends into the housing set 1 and is connected with the rectification and voltage stabilization circuit board 4;
the gear set 5 is installed in the shell set 1, and the gear set 5 is connected with the three-phase permanent magnet brushless motor 2;
the crank set 7 is rotatably installed on one side of the shell set 1, and the crank set 7 is connected with the gear set 5.
A rotating speed display plate 3 is installed in the shell group 1, and the rotating speed display plate 3 is connected with the gear group 5.
The rectification and voltage stabilization circuit on the rectification and voltage stabilization circuit board 4 consists of a full-bridge rectification circuit formed by a diode SM3200AF, an overvoltage protection circuit formed by a triode AOD409 and a diode 1N4747, and a voltage stabilization circuit formed by a voltage stabilization chip LT1185I and a relay HM 4100F-N.
The rectifying and voltage stabilizing circuit on the rectifying and voltage stabilizing circuit board 4 can automatically switch the output voltage value according to the load voltage of the battery.
According to the principle of automatically switching output voltage of battery load voltage:
the lowest voltage of the 14.4V lithium battery pack is about 11V approximately, and the highest voltage is not more than 16.8V; the lowest voltage of the 7.2V lithium battery pack is about 5.6V, and the highest voltage is not more than 8.4V. As shown in fig. 2, the output voltage value of the voltage regulator circuit is determined by the output voltage value of the resistor network regulation voltage regulation chip LT1185I composed of resistors R4, R5, R9, R10 and R13;
when the load voltage is less than 11V, the relay does not work, and the resistors R9 and R10 are connected into the circuit, so that the voltage stabilizing circuit outputs 8V. When the load voltage is more than 11V, the relay works, and the normally open contacts of the relay short circuit the resistors R9 and R10, so that the output voltage of the voltage stabilizing circuit is 16V. The function of automatically switching the output voltage through the battery load voltage value is realized. The actual operating voltage point of relay HM4100F-N can be adjusted by R14.
Compared with the prior art, the utility model provides an output voltage automatic switch-over's 20W hand generator has following beneficial effect:
the utility model provides a 20W hand generator with automatic switching of output voltage, which can automatically switch and output 8V or 16V voltage value according to the voltage of a battery load, and only one output cable is needed to output two voltages; the volume and the weight of the hand generator are reduced under the condition of not reducing the output, the cable accessories of the hand generator are also reduced, the structure is simple, and the reliability is high.
Second embodiment:
based on the 20W hand generator with the output voltage automatically switched provided by the first embodiment of the application, the second embodiment of the application provides another 20W hand generator with the output voltage automatically switched. The second embodiment is merely a preferred way of the first embodiment, and the implementation of the second embodiment does not affect the implementation of the first embodiment alone.
The second embodiment of the present invention will be further explained with reference to the drawings and the embodiments.
Referring to fig. 2, the present embodiment is different from the first embodiment in that the crank set 7 includes an outer rod 71, a sliding slot 72 is formed at a bottom end of the outer rod 71, a sliding rod 73 is slidably mounted in the sliding slot 72, a bottom end of the sliding rod 73 extends out of the sliding slot 72 and is connected to a handle 74, a fixing seat 77 is mounted at one side of the outer rod 71, a threaded hole 78 is formed in the fixing seat 77, the threaded hole 78 is communicated with the sliding slot 72, a screw 79 is mounted in the threaded hole 78, one end of the screw 79 extends into the sliding slot 72 and contacts with the sliding rod 73, and a knob 710 is mounted at the other end of the threaded rod 79 extends out of the threaded hole 78.
The slide bar 73 is far away from one side of fixing base 77 has seted up spacing groove 75, fixed mounting has stopper 76 on one side inner wall of spout 72, stopper 76 with spacing groove 75 looks adaptation.
One side of the sliding rod 73 close to the screw 79 is polished into a rough surface, so that the friction factor and the friction force are increased, and the position of the sliding rod 73 is more stable.
Can carry out the rigidity to slide bar 73 through screwing up screw rod 79, can take slide bar 73 out from spout 72 during the use, increase the length of whole rocking arm, conveniently hand, can just with accomodating in slide bar 73 income spout 72 after having used up, take up an area of the space and reduce, portable.
The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention are used in the specification and the attached drawings, or directly or indirectly applied to other related technical fields, and the same principle is included in the protection scope of the present invention.
Claims (7)
1. A20W hand generator that output voltage automatic switch-over, its characterized in that includes:
a housing group;
the three-phase permanent magnet brushless motor is arranged in the shell assembly;
the rectification voltage-stabilizing circuit board is arranged in the shell assembly and is connected with the three-phase permanent magnet brushless motor;
the input cable is arranged on one side of the shell assembly, and one end of the input cable extends into the shell assembly and is connected with the rectification voltage stabilizing circuit board;
the gear set is arranged in the shell set and is connected with the three-phase permanent magnet brushless motor;
the crank set is rotatably installed on one side of the shell set and is connected with the gear set.
2. The 20W hand generator according to claim 1, wherein a speed display board is installed in the housing assembly, and the speed display board is connected to the gear set.
3. The 20W hand generator with automatic output voltage switching according to claim 1, wherein the rectifying and voltage stabilizing circuit on the rectifying and voltage stabilizing circuit board is composed of three parts, namely a full bridge rectifying circuit formed by a diode SM3200AF, an overvoltage protection circuit formed by a triode AOD409 and a diode 1N4747, and a voltage stabilizing circuit formed by a voltage stabilizing chip LT1185I and a relay HM 4100F-N.
4. The 20W hand generator according to claim 1, wherein the rectifying and voltage stabilizing circuit on the rectifying and voltage stabilizing circuit board can switch the output voltage value according to the load voltage of the battery.
5. The 20W hand generator according to claim 1, wherein the crank set comprises an outer rod, a sliding groove is formed in the bottom end of the outer rod, a sliding rod is slidably mounted in the sliding groove, the bottom end of the sliding rod extends out of the sliding groove and is connected with a handle, a fixed seat is mounted on one side of the outer rod, a threaded hole is formed in the fixed seat and communicated with the sliding groove, a screw rod is mounted in the threaded hole, one end of the screw rod extends into the sliding groove and is in contact with the sliding rod, and the other end of the screw rod extends out of the threaded hole and is provided with a knob.
6. The 20W hand generator according to claim 5, wherein a limiting groove is formed on one side of the sliding rod away from the fixing base, a limiting block is fixedly mounted on an inner wall of one side of the sliding groove, and the limiting block is matched with the limiting groove.
7. The 20W hand generator according to claim 5, wherein the side of the sliding rod near the screw is polished to a rough surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021741089.4U CN212849967U (en) | 2020-08-19 | 2020-08-19 | 20W hand generator with automatic output voltage switching function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021741089.4U CN212849967U (en) | 2020-08-19 | 2020-08-19 | 20W hand generator with automatic output voltage switching function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212849967U true CN212849967U (en) | 2021-03-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021741089.4U Active CN212849967U (en) | 2020-08-19 | 2020-08-19 | 20W hand generator with automatic output voltage switching function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212849967U (en) |
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2020
- 2020-08-19 CN CN202021741089.4U patent/CN212849967U/en active Active
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