DRAWINGS
The drawings described herein are for illustration purposes only and are not intended to limit the scope of the present disclosure in any way.
FIG. 1 is a perspective view of one embodiment of the present disclosure;
FIG. 2 is a perspective view of another embodiment of the present disclosure;
FIG. 3 is a perspective view of still another embodiment of the present disclosure;
FIG. 4 is a perspective view of yet another embodiment of the present disclosure;
FIG. 5 is a circuit diagram of a signal transmitting device and a power sander; and
FIG. 6 is a circuit diagram of a receiving device for wireless signal and a vacuum cleaner.
DETAILED DESCRIPTION
The following description is merely exemplary in nature and is not intended to limit the present disclosure, application, or uses. It should be understood that throughout the drawings, corresponding reference numerals indicate like or corresponding parts and features.
Referring to FIGS. 1 to 4, a power tool combination of the present disclosure includes generally a first power tool 1 and a second power tool 2. The first power tool 1 includes a first electrical wire 11 and the second power tool 2 includes a second electrical wire 12. The first electrical wire 11 is connected terminally to a first plug 5 and the second electrical wire 12 is connected terminally to a second plug 6. The first power tool 1 is electrically connected to a signal receiving device 4 which includes a power switch for controlling the first power tool 1. The second power tool 2 is electrically connected to a signal transmitting device 3. When the second power tool 2 is turned on, the signal transmitting device 3 transmits a signal which is received by the receiving device 4 whereby the power switch of the first power tool 1 is in a conduction state (i.e., is powered on).
Referring to FIGS. 1 to 4, a synchronization control device includes the signal receiving device 4 electrically connectable to the first power tool 1 and the signal transmitting device 3 electrically connectable to the second power tool 2.
Referring to one aspect shown in FIG. 1, the first power tool 1 has a first power tool housing 13 onto which the signal receiving device 4 is mounted. The second power tool 2 has a second power tool housing 14 onto which the signal transmitting device 3 is mounted.
Referring to another aspect shown in FIG. 2, the signal transmitting device 3 is arranged outside of the second power tool housing 14 and interrupts (i.e., is arranged in) the second electrical wire 12 and the signal receiving device 4 is mounted on the first power tool housing 13.
Referring to still another aspect shown in FIG. 3, the first electrical wire 11 has two discrete sections 11a and 11b, the first of which 11a is electrically connected to a first socket 8 via a first terminal connecting plug 10. The signal receiving device 4 is located in the first socket 8. The second electrical wire 12 has two sections 12a and 12b, the first of which 12a is electrically connected to a second socket 7 via a second terminal connecting plug 9. The signal transmitting device 3 is located in the second socket 7. The first socket 8 and the second socket 7 are electrically insulated from each other but mechanically attached to each other in an integral one-piece assembly. This ensures that the signal transmitting device 3 and the signal receiving device 4 are electrically insulated from each other and only a mechanical connection is formed therebetween.
Referring to yet another aspect shown in FIG. 4, the signal receiving device 4 interrupts (i.e., is arranged in) the first electrical wire 11 and the signal transmitting device 3 is located in the second socket 7. The receiving device 4 and the transmitting device 3 are only mechanically connected to each other and electrically connected to the first and second power tool 1, 2, respectively.
The first and second power tools are (for example) a vacuum cleaner and a power sander respectively (e.g., the first power tool 1 is the vacuum cleaner and the second power tool 2 is the power sander). The power sander and the vacuum cleaner are running at the same time via the effective signal transmission between the signal transmitting device 3 and the receiving device 4. Thus the vacuum cleaner can clear debris generated by the power sander thereby saving man-hours.
Referring to the circuit diagram shown in FIGS. 5 and 6, the receiving device 4 and the transmitting device 3 of the synchronization control device are formed in independent circuits with the first and second power tools respectively. Thus the power of the power tools in synchronized running are not limited by the carrying capacity of the electrical wires of the power tools. This reduces manufacturing costs.
Referring to FIG. 5, a circuit diagram between the signal transmitting device 3 and the power sander is shown. The circuit is a common circuit and includes a main circuit 15 of the power sander in series with a circuit of the signal transmitting device 3. In the circuit of the signal transmitting device 3, a first power supply circuit 16 supplies power for an integrated circuit 28. An effective signal (namely a start signal or a stop signal) is emitted via a carrier vibration circuit 24, a modulation circuit 25, a filtration circuit 26, and a transmitting circuit 27 electrically connected to one another in sequence. The integrated circuit 28 includes an input circuit 18, a code circuit 19, an output circuit 20, a frequency-generating circuit 21, an oscillator 22 and a time sequence generator 23 which is a common circuit. Meanwhile, the signal transmitting device 3 and the power sander are electrically connected to each other and the circuit of the signal transmitting device 3 and the circuit of the power sander form an integral circuit thereby controlling the starting or stopping of the power sander.
Referring to the circuit diagram formed between the signal receiving device 4 and the vacuum cleaner shown in FIG. 6, the circuit diagram is also a common circuit and is composed of a circuit of the signal receiving device 4 and a main circuit 41 of the vacuum cleaner. The circuit of the signal receiving device 4 is mainly composed of a receiving circuit 29, an integrated circuit 38, a motor-controlling circuit 39 and a second power supply circuit 40. The integrated circuit includes an amplifier 30, an oscillator 31, a time sequence generator 32, a signal sampling and code error detector 33, a decoding circuit 34, a latch 35, an output circuit 36 and a logic control circuit 37 which is also a common circuit. The signal receiving device 4 and the vacuum cleaner are electrically connected to each other. The circuit of the signal receiving device 4 and the main circuit 41 of the vacuum cleaner form an integral circuit. Thus the signal receiving device 4 receives the starting signal or the stopping signal emitted from the signal transmitting device 3 and controls the synchronized operation of the vacuum cleaner and the power sander through the integral circuit (i.e., the vacuum cleaner and the power sander are started or stopped at the same time).
Patent Application
20080022479
