IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0392107
(2009-02-25)
|
등록번호 |
US-8127974
(2012-03-06)
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발명자
/ 주소 |
- Zhang, Huading
- Zhang, Qinyao
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출원인 / 주소 |
|
대리인 / 주소 |
Pro-Techtor Int'l Services
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인용정보 |
피인용 횟수 :
1 인용 특허 :
3 |
초록
▼
The new invention is a portable tool, specifically directed electric motor driven nail gun. It has a nail push system, also a motor. The motor uses a flywheel as a speed reduction mechanism, the main characteristic is that the drive unit of the driving mechanism is connected to a pitman by a pin axi
The new invention is a portable tool, specifically directed electric motor driven nail gun. It has a nail push system, also a motor. The motor uses a flywheel as a speed reduction mechanism, the main characteristic is that the drive unit of the driving mechanism is connected to a pitman by a pin axis on one end, and the other end is connected to the pin axis which does the arc movement. The end of the drive unit props up the long slot by a spring and enclosed by the long slot in a sliding movement. The rectilinear reciprocating drive unit is governed by a clutching mechanism mounted on the speed reduction mechanism. The new invention can provide a powerful impacting force. The clutch bar of the driving mechanism has an outer bulge and inner bulge, it controls the tension spring which makes the drive unit impact nails and recover after impacting nails, without any memory of the rotating state.
대표청구항
▼
1. An electrical motor driven nail gun comprising: an electric drive motor electrically connected to a power source, a fastener feeding device with a magazine for feeding fasteners, and a trigger connected to a control unit for activating a fastener driving action;a rotational motion speed reduction
1. An electrical motor driven nail gun comprising: an electric drive motor electrically connected to a power source, a fastener feeding device with a magazine for feeding fasteners, and a trigger connected to a control unit for activating a fastener driving action;a rotational motion speed reduction drive assembly further comprising a pinion gear fixed to an output shaft of the motor, and a flywheel with a rack gear formed on an inward facing peripheral surface and engaging the pinion gear;a linear motion conversion linkage, further comprising a slot board having an arcuate slot with an axis in a central portion, a driving block slidingly mounted in said arcuate slot, a pitman with a proximal end portion pivotably connected to the driving block, and an elongate drive unit having a first end portion and an opposite second end portion with the first end portion pivotably connected to a distal end portion of the pitman;a clutching mechanism mounted to the flywheel, having a clutch bar engaging the driving block when the trigger is activated to drive a fastener, and a disengage block for disengaging the clutch bar from the driving block on completion of the driving action; anda long board having a first end portion and an opposite second end portion, with a longitudinal long slot in which the drive unit is disposed with linear sliding motion, and with an elastic member connecting the first end portion of the drive unit to the first end portion of the long board;wherein fasteners are delivered by the feeding device to the second end portion of the long board where the fasteners are driven one-by-one by the second end portion of the drive unit, the rotating energy of the flywheel being converted by the linkage mechanism to lateral movement of the drive unit for driving the fasteners. 2. The electrical motor driven nail gun according to claim 1, in which the flywheel rotates on a axis in a space formed between the slot board and a bracket. 3. The electrical motor driven nail gun according to claim 1, in which the clutching mechanism further comprises a solenoid connected to the control unit, a cam driven by the solenoid, the clutch bar being mounted in a slot on the flywheel and urged outward from the axis of the flywheel by a clutch spring; wherein when the solenoid moves the cam into position for driving a fastener, the cam moves the clutch bar against the clutch spring, the clutch bar advances the driving block causing a fastener to be driven, and when the clutch bar strikes the disengage block mounted on the slot board the clutch bar is disengaged allowing the driving block to return to a starting position. 4. The electrical motor driven nail gun according to claim 3, wherein the driving block has an I-shaped cross-section, an upper side portion of the driving block has an axis pin connected to the pitman, a middle portion is slidingly disposed in the arcuate slot of the slot board, and the underside portion is engageable with the outer bulge of clutch bar; wherein in the course of the flywheel rotating, the disengage block contacts the inner bulge of the disengage block causing the clutch bar to disengage, allowing the disengaged drive block to return to its original position urged by a return spring, thereby completing a fastener driving cycle. 5. The apparatus according to claim 3, wherein the clutch spring has a strength which is pre-selected to offset the inertial force on the clutch bar from the high speed rotating flywheel such that when the clutch bar leaves the cam, it will not be pushed outward and will be able to keep pushing the driving block to complete a fastener driving operation. 6. The electrical motor driven nail gun according to claim 3, wherein the power source of the motor or, in the alternative rechargeable batteries, are connected to a main switch and a safety switch in series between the control unit and the motor, with the safety switch connected to the control unit. 7. The electrical motor driven nail gun according to claim 1, wherein the clutch bar has an outer bulge and an inner bulge, the space between them forming a gate, the gate shifts when the clutch bar is pushed by the cam, causing the outer bulge to engage the driving block, causing the driving block and the pitman to travel along the arcuate slot urged by the by clutch bar which is driven by the high speed rotating flywheel. 8. The electrical motor driven nail gun according to the claim 1, wherein the elastic member connecting the first end portion of the drive unit to the first end portion of the long board is a spring.
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