CN86105872A - Manual fastener driving devices - Google Patents

Abstract

Manual fastener driving devices, one driving mechanism is arranged, it is subjected to spring action, the securing member of staple and so on is extruded, under spring action, first lever, one end is meshed with drive member, and is connected with bearing pin on the body of device, and the other end contacts with second lever, the pivot of second lever is bigger from the distance of drive member than the pivot of first lever from the distance of drive member, laborsaving when operating like this, there is an elongated slot at the bearing pin position of first lever, when spring is compressed to terminal point, the backstop boss has limited the rotation of first lever, after this lever just changes lateral displacement into, and first lever and drive member are thrown off, and drive member is extruded clench nail.

Description

The hand clench nail nailing device that uses has many types at present, in order to this class clench nails such as nailing staple, pin, nails.Nearly all this class device is provided with guide groove in the bottom of its casing, in order to accommodate the clench nail of certain maximum dose.These clench nails are pushed near the anterior slit of device by a push pedal by spring action.With the perpendicular direction of the clench nail direction of packing on an actuator is arranged, be that it is pressed into workpiece to stand-by clench nail by slit.The power of actuator is a spring, and it forces actuator to move to workpiece in vertical direction.For making actuator after overcoming spring force, return to initial displacement, be provided with a lever, with it actuator is limited, the compression spring just works and moves to needed position, clench nail top up to actuator when lever lifts.Lever such as further motion will make the lever end skid off from the actuator assembly to come thereby spring promotes actuator rapidly and makes it with the clench nail bump and by slit clench nail to be pushed away.

This class instrument all has can be around the lever of a bearing pin rotation, the forward position of lever just in time is positioned at the below of actuator assembly lip, its end overcomes spring force actuator is raised when lever rotates, lever was rotated further after actuator rose to the suitable height in clench nail top, will make and self depart from from actuator route vertically upward, until disengaging fully with actuator, at this moment no longer affined actuator then can freely clash into clench nail downwards.Usually the disengagement of lever and actuator skids off from actuator support zone below by lever end and finishes.Because lever and actuator all are being subjected to the effect of spring force, the relative slip of the two will cause wearing and tearing, in case the lever end wearing and tearing, the position of actuator will descend when unclamping, and amount of spring compression reduces, and the downward active force of actuator also decreases.Because actuator lifts, this is a continuous motion process for slip between spring compression and mating surface, employing is made the method for mating surface disengagement around the mode of pivot rotation by lever, just need the positioning accuracy between actuator and the lever, the size of size and mating surface is very approaching could move errorlessly, and has so just increased manufacturing cost.The present invention has adopted when the spring compression, and the two contact is in the whole motion process of throwing off, and lever also has a horizontal moving method that leaves actuator except swaying, and this just makes that above-mentioned problem is solved.These characteristics of the present invention will further be set forth in conjunction with the accompanying drawings.

Because spring force is unique power source of bump clench nail, and spring generally is very hard, longer at clench nail, the situation that workpiece is hard again is just all the more so, though directly driving spring is feasible, brings very big inconvenience to the user.For overcoming this shortcoming, set up one second lever, it and first lever mated are used, and the operating physical force of hand is reduced.Usually the method that adopts is to add long lever, is located near the front portion of device and its free end extends to the device rear portion in the pivot of control stick, and like this, operating physical force can reduce.This way but exists a main shortcoming, because power is to act on to leave the actuator direction, when lever when pressing down or grasping the nailing machine body with the palm extrusion lever, the rear portion of nailing machine must be supported on the workpiece, some situation, another hand also must buttress nailing machine and it is abutted against on the workpiece.But a lot of fastened workpiece of occasion need be held and keep going up in position.If fastened workpiece does not have the rear surface of supporting nailing machine, for example workpiece can only squeeze by palm so and hold complete operation near the edge of chair sponson.Continuous so long work will feel very tired.If active force mainly is to press with hand and do not need long-time continuous this just can lessen fatigue greatly with finger manipulation.Under the very hard situation of workpiece, the working position of nailing machine or slotted portion must withstand on the workpiece tightly during operation, in case locking apparatus is lifted in the course of the work, so hand operating lever presses down and compresses so can realize simultaneously, but the nailing machine rear portion does not then press down and will have any problem if support.

For addressing the above problem, nailing machine also can make electricity consumption or source of the gas as power, but the common price height of this type of nailing machine, and under a lot of occasion owing to cable or flexible pipe that will be very long in tow feel very inconvenient.

An object of the present invention is to provide a kind of operating means, in this device, local thereby fatigue finger that the active force of hand is added near activation point has alleviated.

Another object of the present invention provide a kind of can be with a hand with regard to operable device, and do not have still to have when supported the active force of roof pressure workpiece when the rear portion of this instrument.

A further object of the invention provides a kind of not easy to wear thereby operating means that the nailing active force is more constant.

In order the present invention to be had preferably to understand also to show how it works, need be illustrated with reference to embodiment and accompanying drawing thereof, wherein:

Fig. 1 is that hand operating lever is in resting position along the cutaway view of nailing machine central plane;

Fig. 2 is a top view;

Fig. 3 is the cutaway view along central plane, and the manual operating lever segment presses down;

Fig. 4 is the cutaway view along central plane, and hand operating lever is pressed onto the position fully.

Consult Fig. 1 and Fig. 2, the guide rail 16 of supporting and making clench nail 17 guiding is housed in the guider body 15, for simplicity, what clench nail was drawn among the figure is staple, and the clench nail of other pattern such as pin, spring nail, nail and so on all can adopt on demand.The guide rail 16 of clench nail is positioned at the bottom of guider body 15 and makes guide rail 16 press to the slit 18 that clench nail withstands with a releasable hold down gag 19 also to be fixed, makes guide rail 16 compacted in guider body 15, (as shown in FIG.).This is to realize by a lever 19 that is installed on the bearing pin 20.The lower edge of lever contacts with the rear portion 21 of guide rail 16, hold down gag 19 is because the effect of spring 22 forces it to rotate towards clockwise direction, this just makes guide rail 16 be subjected to a motive force towards the instrument front portion, this only is a kind of mode that guide rail 16 is connected with guider body 15, can adopt different mode to that indicated in the drawings fully, just the represented scheme that goes out not is to a kind of restriction of the present invention among the figure.

Push pedal 23 matches with the guide rail 16 of clench nail 17, and push pedal forces clench nail to move (spring force is not shown) along guide rail 16 under the spring force effect.During work, before push pedal was shifted clench nail onto slit 18, actuator 24 just gave the top that rises to clench nail earlier.This is usually the way that this type of instrument is adopted, and also can make other corresponding way.

The shape and size of actuator 24 are that the shape of the slit 18 released according to the kind of institute's use clench nail and clench nail is decided, for actuator 24 is moved, it can be in guider body 15 be connected along paralleling the driving arm 25 that slides in the plane with slit 18 that clench nail is released with one.Spring 26 forces driving arm 25 to move down.In order to regulate motive force, a screw-thread bush 27 is housed in the top position of spring 26, move by knob 28 control linings 27, when knob 28 rotates, lining 27 moves the installing space increase that makes spring or reduces, the space reduces then to make spring 26 compression stresses to increase, and has also just stored the more energy that is used to promote its stroke.A kind of designation method that knob 28 is connected with guider body 15 is the baffle plate 29 of fixedlying connected with guider body 15 with.Packing ring 31 of rotation axis 30 usefulness and an open elastic ring 32 block and can not move.The regulated quantity that needs and how regulating can change with the type of operative installations as need not regulating in some occasion, and spring force is exactly fixed value and the lining 27 of corresponding adjusting usefulness, and knob 28 grades all can be saved.

Since spring force may be quite big and workpiece under the less situation of the clench nail resistance of squeezing into, the bottom of guider body 15 can be subjected to very big bump in each end of a period of hitting stroke, impaired for preventing body 15, in the guide groove bottom that accommodates driving arm 25 absorber block 33 is housed.

First lever 34 overcomes spring force 26 with this lever on the guider body 15 driving arm 25 is lifted by being pivotally mounted in.Bearing pin 35 and bearing 36 penetrate in the elongate slots 37 of lever 34, the projection that the leading edge 38 of lever 34 is positioned at the below driving arm 25 at driving arm 25 protrusion positions takes the shape of the letter U, holding spring 26 between its two vertical panels, jagged on two vertical panels of the projection of driving arm 25, be used to hold receive to shoulder and defend the leading edge that two adopted shape ends of 34 form.Owing to shoulder and defend 34 breach on two vertical panels of two adopted shape ends that axle 35 clockwise rotates leading edge 38 and projection and be meshed, and whole driving arm 25 is lifted.

Spring force 26 is very big as a rule, therefore need overcome sizable opposition just can make lever rotate, the operating physical force of required hand reduces when lever 34 is rotated, used manual second lever 39, it is installed on the body 15 by bearing pin 40, roller 41 is parts of lever 39, reduce friction with lever 34 with it, compare with the installation site of the pivot 35 of lever 34 in the installation site of the pivot 40 of lever 39, distance apart from driving arm 25, the former is than far away many of the latter, and lever 39 is to rotate counterclockwise, as shown in Figure 1.The installation site of the lever pivot of expressing among the figure makes the manual steering force of the circulation of finishing the work be positioned at the front end of close nailing machine.By the present invention, the position of power can make nailing machine only bear a downward power and the rear portion of this device and not requiring is supported on the workpiece.The cavity 42 of guider body 15 is to hold the space of finger so that arrest instrument, and the part that cavity 42 also can allow finger hold guider body 15 is finished extruding action and made the nailing machine circulation of finishing the work.

Now consult Fig. 3, manual operating lever 39 part is depressed, roller 41 has made lever 34 around bearing pin 35 rotation and lift driving arm 25, the bottom stop portion 43 of lever 34 contacts with a fixing lug boss 44 on the guider body 15, rotatablely moving of lever stopped, what item 44 was represented on the figure is a fixing lug boss, and the backstop of other form also can be used.

Consult Fig. 4, manual operating lever 39 has been pushed and has been put in place, before putting in place, because the pressing action of roller 41, also can make lever 34 continue motion, but because backstop boss 44 has limited its rotation, lever 34 can only leave laterally moving of driving arm 25 as a result, and the direction that direction that moves and actuator 24 move is perpendicular.Lever 34 can also have a rotation among a small circle after the end 38 of lever 34 is deviate from from the following contact surface of driving arm 25, withdrawn from this moment driving arm 25 in the breach of driving arm 25 and freely moved downward in the clear owing to shoulder two adopted shape ends defending 34 leading edge 38, stand-by clench nail 17 has been squeezed into workpiece.

Claims (3)

1, manual fastener driving devices, it includes: one has the guider body of clench nail being pushed to slit, and clench nail is squeezed into workpiece by slit; The nailing drive member that can in the guider body, slide; An elastic device, it pushes drive member to the slit at clench nail place; An operating mechanism, it at first just drive member overcome spring force, move to the slit direction that deviates from the clench nail place, then just drive member is unclamped.Drive member just moves towards the direction of clench nail slit.The characteristics of nailing machine are: operating mechanism includes one first lever, and it is mounted on the guider body with a bearing pin, and its end is meshed with above-mentioned drive member, and its other end contacts with manual second lever; One second lever, it is connected on the guider body with bearing pin, and it is big apart from the distance of drive member that its distance that connects the moving member of pivot distance links fulcrum than first lever, and second lever pivots and just causes that first lever oppositely rotates around its pivot.

2, its characteristics of device according to claim 1 are: first lever is after having rotated partial journey, contact with stop portion on the guider body, this stop portion is obstructed the normal rotation of first lever, but make first lever continue produce a lateral displacement that deviates from drive member, cause that thus first lever and drive member throw off mutually.

3, its characteristics of device according to claim 2 are to have on first lever elongate slots to produce lateral displacement to allow first lever

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