CN2047208U - An electric nailing machine including automatic correction, power saving and safety devices - Google Patents

Abstract

The utility model relates to an electric nailing machine including automatic correction, economize merit and safety device, it utilizes projection on the button connecting rod to touch a second micro-gap switch, make the motor restart, make the cam disc leave the dead point position, and have the device when the nailing action is accomplished and the power cuts off, make the electrode of motor interconnect immediately, produce the opposite electromotive force effect of an engine, make the motor stop rapidly, in order to increase the distance between bolt and the nail beating piece on the cam disc, ensure that the motor just carries out the nailing action after the speed is equivalent when starting next time. In addition, it is provided with a safety switch for increasing safety.

Description

An electric nail-driving machine including autocorrection, work-saving and safety equipments

The utility model relates to a kind of electrodynamic nailing machine that comprises from dynamic(al) correction, province's merit and safety device, utilize button to drive a connecting rod and connect one first microswitch, connect power supply to CD-ROM drive motor, make it start to carry out the nailing action, and when this connecting rod is positioned at common dead-centre position, make the projection on it connect one second microswitch, reach the purpose of eliminating the dead point from dynamic(al) correction; Finish and microswitch the time when nailing action again dump, the electrode of motor interconnects immediately, thereby the phase counter electromotive force effect that produces a generator, the motor brake is also stopped rapidly, to guarantee just to carry out the nailing action after motor reaches at a high speed when starting next time, reduce motor start-up current and save electric power; In addition, the utility model still has a discharge cock, is used for pinning shift knob when not using, and guarantees safety.

Nailing machine commonly used at present all is to control the purpose that a microswitch reaches nailing with button, shown in Fig. 7 A, when button down, connecting rod 100 on it is just depressed microswitch 101, this moment power connection, motor starting, and rotating cam dish 102, make its pin 103 push a nail hitting piece to compress a spring, thereby after it continued the compressing of rotation disengaging nail hitting piece, compressed spring just pushed the nail hitting piece to finish the nailing action, 102 of cam discs are rotated further and connecting rod 100 are pushed to a side, make the lower end disengaging microswitch 101(of connecting rod 100 see also Fig. 7 C), the supply of cutting off the electricity supply stops the nailing action, therefore every push switch once, handling safety is guaranteed in nailing action for once, and because the relation of inertia, cam disc 102 can be rotated further some distances, and stop at for example position of Fig. 7 B, treat that button unclamps connecting rod then 100 and replys at least the upright position because of the effect of spring 104 wait for operation next time shown in Fig. 7 A.

But cam disc 102 moves the relation of instability or power supply deficiency because of the operator sometimes, can stop at position once in a while as Fig. 7 D, this moment, connecting rod 100 was fixed in obliquity, even so press push button, connecting rod 100 can not be pressed onto microswitch 101 yet, that is be positioned at the dead-centre position, and only stretch into nailing machine this moment and touch microswitch 101 with bottle opener, just can exist once more after making connecting rod 100 leave the dead-centre position.

For this reason, this creation people conceives and a kind ofly comprises from dynamic(al) correction, economizes the electrodynamic nailing machine of merit and safety device, overcoming the serious disappearance of above-mentioned nailing machine commonly used, and improves its efficient and security.

Main purpose of the present utility model, provide a kind of nailing machine that comprises from dynamic(al) correction, province's merit and safety device, utilize the projection on the button connecting rod when the position at nailing machine dead point commonly used, to touch one second microswitch, make motor start once more and make cam disc leave the dead-centre position, reach purpose from dynamic(al) correction.

Another purpose of the present utility model, provide a kind of nailing machine that comprises from dynamic(al) correction, province's merit and safety device, can nailing action finish and microswitch dump in and the electrode of motor is connected immediately, thereby produce one with generator counter electromotive force effect mutually, the motor brake is also stopped rapidly, guarantee just to carry out the nailing action after motor arrives at a high speed when nailing next time, thereby reduce motor start-up current, and save electric power.

A purpose more of the present utility model provides and a kind ofly comprises from dynamic(al) correction, economizes the nailing machine of merit and safety device that it is provided with a discharge cock, can guarantee the safety when nailing machine does not use by this.

Existing conjunction with figs. explanation is to reach required technological means that possesses of above-mentioned purpose and special tectonic with the utility model, and details are as follows:

Fig. 1 is the stereo appearance figure of embodiment of the present utility model;

Fig. 2 is the three-dimensional parts explosion of embodiment of the present utility model;

The schematic diagram of movements that Fig. 3 avoids the dead point to take place for correction of the present utility model;

Fig. 4 is a circuit diagram of the present utility model;

Fig. 5 is the performance diagram of general typical motor;

Fig. 6 is discharge cock figure of the present utility model;

How Fig. 7 produces the action specification figure at dead point for nailing machine commonly used.

At first see also Fig. 1 and Fig. 2, the utility model mainly comprises a button 1, a connecting rod 3, a cam disc 5, first microswitch 6, reaches second microswitch 7.Button 1 is to be located at the about mid portion of electrodynamic nailing machine, in order to the action of control nailing.Connecting rod 3 is the inboard that is installed in button 1, and is positioned at upright position (seeing also Fig. 3 A) usually by means of the compressing of a spring 2, and therefore when button 1 was depressed, connecting rod 3 was just shifted to the below simultaneously.Cam disc 5 is to be fixedly connected on the output shaft 81 of gear train 8 by means of screw rod 51, and the power shaft of gear train 8 then is connected on the driving shaft (not shown) of motor 9, so when motor 9 rotated, through the transmission of gear train 8, cam disc 5 also rotated thereupon.Cam disc 5 be provided with a pin 52 than small end, pushing a nail hitting piece 4, compression spring 20, wait it to continue rotation and break away from pushing of nail hitting piece 4 after, compressed spring just pushes nail hitting piece 4 that the nails (not shown) in the nail groove 40 are got.First microswitch 6 is to be located at connecting rod 3 belows, and aims at connecting rod lower end 32 when usual, therefore depresses when button 1, and connecting rod 3 also triggers microswitch 6 vertically downward, connects power supply 50 to motor 9, carries out the nailing action.Second microswitch 7 is a side of being located at connecting rod 3, and when connecting rod 3 is positioned at the upright position and projection 33 keep certain distances, have only when connecting rod 3 when obliquity moves up, its projection 33 just can touch second microswitch 7.As for thread cap 30, then be in order to prevent that spring 20 breaks away from nailing machine and can adjust the intensity that spring 20 is oppressed nail hitting pieces 4.

During use, at first press push button 1, be installed in its inboard connecting rod 3 and also shift to the below simultaneously, thereby touch the first microswitch 6(and see also 3A), make power supply 50 be connected to motor 9 and make its rotation, and then driving cam dish 5,52 of its pins push nail hitting piece 4, compression spring 20, wait it to continue rotation and break away from pushing of nail hitting piece 4 after, be compressed spring 20 and just push nail hitting piece 4 that the nails 41 in the nail groove 40 are got.5 of cam discs are rotated further (shown in Fig. 3 B), and connecting rod 3 is pushed away tiltedly, make the end 32 of connecting rod 3 break away from first microswitch 6, the supply of cutting off the electricity supply stops cam disc 5 action of nailing that continues, so whenever push button 1 No. one time, all only carry out a nailing action, reach and guarantee purpose of safety.When cam disc 5 stops on the dead-centre position of using nailing machine always, shown in Fig. 3 C, the projection 33 of connecting rod 3 is near second microswitch 3, therefore when button 1 unclamps, connecting rod 3 just moves up, and its projection 33 just triggers second microswitch 7, makes motor start once more, make cam disc 5 leave the dead-centre position, reach function from dynamic(al) correction.

Another feature of the present utility model is to utilize circuit to produce the effect of motor brake, and when making dump, motor 9 can stop at best position rapidly, increases the strength of hitting next time, and reduces motor start-up current, reaches the purpose of saving electric power.As shown in Figure 4, what power supply 50 positive polar systems were connected directly to the positive pole of motor 9 and microswitch 6 closes the NC contact usually, what power supply 50 negative poles then were connected directly to first and second microswitch 6 and 7 opens the NO contact usually, the negative pole of motor 9 is connected directly to the COM contact of second microswitch 7, and what the COM contact of first microswitch 6 then was connected to second microswitch closes the NC contact usually.When button 1 is depressed, the lower end 32 of connecting rod 3 is just touched first microswitch 6 downwards, that connects first microswitch opens the NO contact usually, therefore the negative pole of power supply 50 just is able to NO and the COM contact via first microswitch 6, via the NC and the COM contact of second microswitch 7, be connected to the negative pole of motor 9 more then, because the positive polar system of power supply 50 directly connects the positive pole of motor 9, therefore form a loop, and starter.Connecting rod 3 is pushed to loxosis and when discharging first microswitch 6, power supply 50 negative poles just can not be connected to the negative pole of motor 9 via first microswitch 6 or second microswitch 7 when the pin 52 of cam disc 5, the power supply that cuts off motor 9 is supplied with and is reached the purpose of cutting off the electricity supply.Again if when cam disc 5 is positioned at the dead-centre position of nailing machine commonly used, first microswitch 6 can not be touched in the lower end 32 of connecting rod 3, and if when button 1 unclamps during with its projection 33 shake-up second microswitch, power supply 50 negative poles are just via the NO of second microswitch 7 and COM contact and be connected to the negative pole of motor 9, also finish a loop, and starter 9 once again.Unclamp when button 1 and after connecting rod 3 resets, discharge second microswitch 7, power supply 50 negative poles just can not be connected to the negative pole of motor 9 via second microswitch 7, reach the purpose of cutting off the electricity supply once again.

When first, second microswitch 6 and 7 discharges, the negative pole of motor 9 is just via COM, the NC of second microswitch 7, the COM of first microswitch 6, NC and power supply 50 are anodal and be connected to the positive pole of motor 9, thereby the phase counter electromotive force effect that makes motor 9 produce a generator, motor 90 brakes are also stopped rapidly.

The purpose of this braking action, can stop operating rapidly after being to make cam disc 5 to push nail hitting piece 4, with the pin 52 of increase cam disc 5 and the distance of nail hitting piece 4, guarantee just to carry out the nailing action motor 9 reaches suitable speed next time when starting after.See also Fig. 5, when the starting load of motor is littler, then rotating speed is higher, and required electric current is littler, and efficient is then higher, and therefore braking action of the present utility model can reduce the starting load of motor 9, also can raise the efficiency, and saves electric power.

In addition, this practicality is small-sized still to have a discharge cock 60(as shown in Figure 6), the horizontal body that inserts in nailing machine, in nailing machine time spent not, as long as discharge cock 60 is pushed to (for Fig. 6), make its projection 61 prop up the lower end 32 of connecting rod 3, button 1 can not be depressed touch first microswitch 6, guarantee safety.If when desiring nailing, conveniently can as long as discharge cock 60 is pushed to down.

Among the above embodiment only is a specific embodiment of the present utility model, but be not in order to restriction the utility model, in not breaking away from the utility model spirit scope, for those skilled in the art person, can in the scope of the claim that does not exceed the application, do various distortion, modify and use.

Claims (4)

1. An electric nailing machine including automatic correction, power saving and safety devices, including: a button mounted on the nailer; a link pivotally mounted on the inside of said button and moving with the button; A cam plate fixedly connected to the output shaft of the drive gear set and provided with a pin on its smaller end, the pin can push a nail block with the rotation of the cam plate; The first micro switch arranged directly below the connecting rod, when the button is pressed down to drive the connecting rod to move down, the lower end of the connecting rod will touch the first micro switch to connect the power supply to Drive the motor, rotate the cam plate, push the nail block, perform the nailing action, the cam plate will continue to rotate and force the connecting rod to break away from the first micro switch, thereby cutting off the power supply; it is characterized in that: the connecting rod A protruding column is provided, and a second micro switch is provided on one side of the connecting rod. The protruding post keeps a certain distance from the connecting rod when the connecting rod is in the vertical position, and is connected to the connecting rod only when the connecting rod is in the inclined position. The rod touches, triggers the second micro switch, starts the motor, and makes the cam disc continue to push the connecting rod to return to the vertical position. 2. The electric nailing machine according to claim 1, characterized in that: said nailing machine also includes a motor brake device, so that after the power is cut off, the motor is quickly braked to increase the force of the cam disc. The distance between the pin and the nailing block ensures that the nailing action will not be performed until the motor reaches a certain speed when it is started next time. 3. The electric nailing machine as claimed in claim 1, characterized in that: the positive pole of the power supply is directly connected to the positive pole of the motor and the normally closed NC contact of the first micro switch, and the negative pole of the power supply is directly connected to To the normally open NO contacts of the first and second micro switches, the negative pole of the motor is directly connected to the COM contact of the second micro switch, and the COM contact of the first micro switch is directly connected to the COM contact of the second micro switch. Normally close NC contact. 4. The electric nailing machine according to claim 1, characterized in that: a movable safety switch which can resist the connecting rod is inserted horizontally on the body of the nailing machine.

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