CN2081783U

CN2081783U - Double-cam transmission structure of electric nailing machine

Info

Publication number: CN2081783U
Application number: CN 90205500
Authority: CN
Inventors: 赖文淡
Original assignee: 蔡宜雄
Current assignee: CHEWANG ELECTRIC TOOLS Co Ltd
Priority date: 1990-05-04
Filing date: 1990-05-04
Publication date: 1991-07-31

Abstract

The utility model relates to the double-cam transmission structure of an electric nailing machine. Double cams are used for moving a nail striking block, and the moving distance of the nail striking block is more than one time than the usual moving distance of the nail striking block, wherein, the double cams are fixedly arranged on the output shaft of the gear set of a nailing machine, and convex parts are respectively provided with a bolt; the inner side of the nail striking block is provided with a U-shaped block with an opening pointing to the double cams. When the double cams rotate, one bolt causes the U-shaped block of the nail striking block to move and compress springs. Then, the other bolt sequentially causes the nail striking block to move and further compress the springs. Therefore, the utility model has the characteristics of power saving, large impulsive force, and small volume.

Description

Double-cam transmission structure of electric nailing machine

The utility model is the double cam drive mechanism about a kind of electrodynamic nailing machine.

The drive mechanism of conventional electric nailing machine, usually all adopt increasing cam axle center to the method for its protuberance outer most edge distance to increase the decrement of spring to produce stronger restoring force, reach the impulsive force that strengthens nailing, this design is a cost with bigger motor driving force and volume.Obviously, the load of motor increases, and power consumption also increases thereupon, and the volume of electrodynamic nailing machine increases the flexibility that will reduce its operation.

The purpose of this utility model is the double cam drive mechanism that a kind of electrodynamic nailing machine will be provided, and it can reach province's merit, impulse force is big and volume is little effect.

The purpose of this utility model is achieved in that and sets firmly a double cam on the output shaft of nailing machine gear train, and respectively establishes one at protuberance and insert Pins; Nail hitting piece inboard is provided with a U type piece, and its opening is towards double cam.When double cam was rotated, wherein a pin just forced the U type piece of nail hitting piece to move the compression spring, and then, another Cha Pins continues to force the nail hitting piece to move again, further compresses spring.

The utility model is because two-jawed two is inserted the Pins U type piece of compressing nail hitting piece continuously, so the decrement of spring can approximate common 1.8 times greatly, and its restoring force also increases relatively, and increases the strength of nail hitting piece nail hitting; Moreover because moment is shorter, so Ke Da economizes the effect of merit; In addition, for obtaining identical impulsive force, can use less cam, thereby make volume little, flexible operation.

Concrete structure of the present utility model is provided by following examples and accompanying drawing.

Fig. 1 is the stereogram of electrodynamic nailing machine.

Fig. 2 is the component decomposition map of electrodynamic nailing machine.

Fig. 3 is a side view of the present utility model.

Fig. 4-A to Fig. 4-D is movement decomposition figure of the present utility model.

Double cam drive mechanism of the present utility model mainly is made up of a double cam (5) and a nail hitting piece (6).Two protuberances (51) of this double cam (5) respectively are provided with one and insert Pins (52A, 52B), and link to each other with cam (5) the center angle of formation of this two protuberance (51) is slightly less than 180 °, to prevent the dead point generation.Double cam (5) is fixed on the output shaft of gear train (4).Nail hitting piece (6) is located at the sliding tray in nailing machine the place ahead, but move left and right, its inboard is provided with a U type piece (61), the centre is a groove (62), right-hand member then is a projection (63), and the right-hand member medial surface (64) of U type piece (61) to the distance of its left end end face (65) is less than or equal to the distance between two protuberances (51).

When using nailing machine, at first push gauge tap (1) and connect battery (2), motor (3) is rotated and drive gear set (4), rotate double cam (5) via output shaft, therefore Cha Pins (52A) just forces U type piece (61) right-hand member medial surface (64) to shift to right-hand and compression spring (7), when double cam is rotated further, another pin (52B) forces U type piece (61) left end end face (65) to shift to right-hand again, further compress spring (7), and then disengaging U type piece (61), compressed spring this moment (7) just can borrow its restoring force to promote U type piece (61) and force nail hitting piece (6) to rush at the left side, and nail is got.

Claims

1, a kind of double cam drive mechanism of electrodynamic nailing machine mainly is made up of a double cam and a nail hitting piece, it is characterized in that double cam is installed on the output shaft of nailing machine gear train, and this two-jawed protuberance is respectively established a pin; The nail hitting piece is located at the sliding tray in nailing machine the place ahead, and there is a U type piece inboard of this nail hitting piece, and its opening is towards double cam.

2, device according to claim 1 is characterized in that the two-jawed two protuberances formed angle that links to each other with cam center is slightly less than 180 °.

3, device according to claim 1, an end medial surface that it is characterized in that U type piece to the distance of other end lateral surface is less than or equal to the distance between two-jawed two protuberances.