CN216682041U - Electric nail gun - Google Patents

Abstract

The utility model discloses an electric nail gun, which solves the technical problem of high cost of the electric nail gun in the prior art, and comprises a shell, wherein a hammer, an elastic element and a driving device for driving the hammer to move to a high position and compressing the elastic element are arranged in the shell, the driving device comprises a motor, a driving disc and a driving pin convexly arranged on the driving disc, the motor drives the driving disc to rotate so that the driving pin pushes the hammer to move, the hammer is provided with a step surface, the step surface comprises a high surface and a low surface, the driving pin comprises a first pin rod and a second pin rod which are radially distributed in a staggered manner, the distance between the first pin rod and a rotating shaft of the driving disc is smaller than the distance between the second pin rod and the rotating shaft of the driving disc, the outer peripheral side of the first pin rod or the outer peripheral side of the second pin rod is provided with a plane for supporting the step surface, when the hammer is in the high position, the first pin rod supports the high surface, the second pin supports the lower face.

Description

Electric nail gun

[ technical field ] A method for producing a semiconductor device

The utility model relates to the technical field of nail guns, in particular to an electric nail gun.

[ background of the utility model ]

Electric nail gun among the prior art, which comprises a housing, be equipped with towards the piece subassembly in the casing, elastic element and drive arrangement, drive arrangement includes the motor, drive mechanism and rotary disk, the motor shaft of motor passes through drive mechanism and connects the rotary disk, be equipped with the protruding round pin on the rotary disk, it includes the punching hammer and installs the piece of punching that is used for towards the nail on the punching hammer to towards the piece subassembly to strike, the motor passes through drive mechanism and drives the rotatory in-process of rotary disk, the protruding round pin is by the low level motion to the high level, at this in-process, the protruding round pin can push towards the high level and compress elastic element with the punching hammer, treat that the motor drive rotary disk rotates so that the protruding round pin is by high level motion to low level after, elastic element drive is towards the piece subassembly motion in order to realize the nailing. Because the peripheral surface of the convex pin in the prior art is a circumferential surface, when the convex pin is in a high position, the convex pin is in line contact with the punch hammer, the convex pin can rotate reversely under the reaction force of the elastic element, in order to ensure that the convex pin can stop at the high position, a one-way bearing is required to be arranged between a shell of the motor and a motor shaft to prevent the convex pin from rotating reversely, and the manufacturing cost of the product is higher because the cost of the one-way bearing is higher.

[ Utility model ] content

The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide an electric nail gun which has the characteristic of low manufacturing cost.

In order to solve the technical problems, the utility model adopts the following technical scheme:

an electric nail gun comprises a shell, wherein a punch hammer, an elastic element and a driving device for driving the punch hammer to move to a high position and compressing the elastic element are arranged in the shell, the driving device comprises a motor, a driving disc and a driving pin convexly arranged on the driving disc, the motor drives the driving disc to rotate so as to drive the driving pin to push the punch hammer to move, the punch hammer is provided with a step surface, the step surface comprises a high surface and a low surface, the transmission pin comprises a first pin rod and a second pin rod which are distributed in a radially staggered manner, the distance between the first pin rod and the rotating shaft of the transmission disc is smaller than the distance between the second pin rod and the rotating shaft of the transmission disc, a plane for supporting the stepped surface is arranged on the outer peripheral side of the first pin rod or the outer peripheral side of the second pin rod, when the punch hammer is in a high position, the first pin rod supports the high surface, and the second pin rod supports the low surface.

Further, the length of first pin rod is less than the length of second pin rod, high face is close to the driving disc setting, the low side is kept away from the driving disc setting.

Furthermore, the cross section of the first pin rod is D-shaped, the plane is formed on the plane where the straight line of the D-shaped is located, and the cross section of the second pin rod is circular.

Furthermore, the impact hammer is provided with an installation groove with an open upper end, and the elastic element is connected between the bottom of the installation groove and the top of the shell.

Furthermore, the bottom of the mounting groove comprises a high plate and a low plate, the high plate and the bottom plate are respectively formed by bending the side wall of the mounting groove, the bottom surface of the high plate forms the high surface, and the bottom surface of the low plate forms the low surface.

Further, the motor is connected with a driving circuit, the shell is provided with a nail outlet, a first switch for controlling the driving circuit to be conducted and an elastically-mounted safety rod are further arranged in the shell, the safety rod penetrates through the nail outlet, and the safety rod is pressed to trigger the first switch to be conducted by the driving circuit.

Furthermore, a guide structure which is in sliding fit with the punch hammer is arranged in the shell, and the first switch is installed on the guide structure.

Furthermore, a second switch and a trigger for triggering the second switch are installed on the shell, and when the first switch and the second switch are triggered simultaneously, the motor drives the transmission disc to rotate so as to enable the transmission pin to reset and release the impact hammer.

Furthermore, a third switch for controlling the disconnection of the driving circuit is arranged in the shell, a trigger piece is arranged on the impact hammer, and when the impact hammer is in a high position, the trigger piece triggers the third switch to disconnect the driving circuit.

Further, the motor includes the motor shaft, the motor shaft is the non-circular axle, the driving disc be equipped with motor shaft complex non-circular hole.

The utility model has the beneficial effects that:

when the electric nail gun is used, when the motor drives the transmission disc to rotate so that the transmission pin pushes the punch hammer to be at a high position, the first pin rod rotates to the position of 12 points, the position of the first pin rod is higher than that of the second pin rod, the first pin rod supports the high surface, the second pin rod supports the low surface, and therefore the two positions of the punch hammer are supported, in addition, one of the outer peripheral side of the first pin rod or the outer peripheral side of the second pin rod is in surface contact with the stepped surface through a plane, the support stability of the punch hammer is improved, the punch hammer is in a stress balance state under the pressure of the elastic element and the support of the transmission pin, the reverse rotation of the transmission disc is prevented, the transmission pin can be stopped at the high position, a one-way transmission device or a one-way bearing does not need to be arranged between the motor shaft and the shell, the common deep groove ball bearing is adopted and even not arranged, and the cost of the deep groove ball bearing is lower than that of the one-way bearing, thereby reducing the manufacturing cost of the product.

The length of first pin rod is less than the length of second pin rod, and the high face is close to the setting of driving disc, and the driving disc setting is kept away from to the low face. By the design, the axis of the first pin rod can be straight, so that the structure of the first pin rod is simplified, and the processing difficulty is reduced.

The cross section of the first pin rod is D-shaped, a plane is formed on the surface where a straight line of the D-shaped is located, and the cross section of the second pin rod is circular. So design, can smoothly promote the impact hammer to high-order through the cambered surface of two pin levers, can realize the stable support to the impact hammer through plane and high-side cooperation again when the impact hammer is in the high-order to guarantee that the impact hammer can stagnate in the high-order.

The impact hammer is provided with an installation groove with an open upper end, and the elastic element is connected between the bottom of the installation groove and the top of the shell. By the design, the structure is more compact, the elastic element can be guided by the mounting groove, and the elastic element is prevented from being stretched smoothly and blocked.

The bottom of mounting groove includes high board and low board, and high board and bottom plate are bent by the lateral wall of mounting groove respectively and are formed, and the bottom surface of high board forms high face, and the bottom surface of low board forms low face. By the design, the molding of the high surface and the low surface is facilitated, and the processing difficulty is reduced.

The motor is connected with drive circuit, and the casing is equipped with out the nail mouth, still is equipped with the first switch and the bumper of elastic mounting that control drive circuit switched on in the casing, and the bumper runs through out the nail mouth, and the bumper is pressed in order to trigger first switch and make drive circuit switch on. So design, when electronic nail rifle used, press the bumper earlier and just can trigger first switch, make drive circuit switch on and then make the hammer of dashing rise to high position to make elastic element for dashing the nail energy storage.

Be equipped with in the casing with hammer sliding fit's guide structure, first switch installs on guide structure. By the design, the sliding of the impact hammer can be guided through the guide structure, so that the smoothness of axial expansion and contraction of the elastic element is further ensured; in addition, the first switch can be preassembled on the guide structure, and then the guide structure is installed in the shell, so that the first switch is convenient to assemble.

The shell is provided with a second switch and a trigger for triggering the second switch, and when the first switch and the second switch are triggered simultaneously, the motor drives the transmission disc to rotate so as to reset the transmission pin and release the impact hammer. So design has dual fail-safe, during the use, only after first switch and second switch are triggered simultaneously, and electronic nail rifle just can the nailing, appears the nailing condition when avoiding pressing bumper or trigger alone.

And a third switch for controlling the drive circuit to be switched off is further arranged in the shell, a trigger piece is arranged on the impact hammer, and when the impact hammer is at a high position, the trigger piece triggers the third switch to switch off the drive circuit. By the design, the motor can be controlled to stop through the third switch in time, so that the first pin rod can be stopped at the position of 12 points, and the impact hammer is further guaranteed to be stably stopped at a high position.

These features and advantages of the present invention will be disclosed in more detail in the following detailed description and the accompanying drawings.

[ description of the drawings ]

The utility model is further described below with reference to the accompanying drawings:

FIG. 1 is a partial block diagram of an electric nailer in accordance with a preferred embodiment of the present invention;

FIG. 2 is a diagram of the preferred embodiment of the present invention with the ram in the low position;

FIG. 3 is an exploded view of the guide structure, ram and resilient member of the preferred embodiment of the present invention;

FIG. 4 is a schematic structural view of a hammer punch according to a preferred embodiment of the present invention;

FIG. 5 is a schematic view of the structure of the driving pin on the driving plate according to the preferred embodiment of the present invention;

FIG. 6 is a diagram of the preferred embodiment of the present invention with the ram in the high position;

FIG. 7 is an enlarged partial view of A in FIG. 6;

fig. 8 is a diagram of the drive pin supporting the hammer punch when the hammer punch is in the high position in the preferred embodiment of the utility model.

Reference numerals:

100. punching a hammer; 110. high surface; 120. low surface; 130. mounting grooves; 131. a high plate; 132. a lower plate; 140. a trigger; 200. an elastic element; 300. a motor; 400. a drive plate; 500. a first pin lever; 510. a plane; 600. a second pin; 700. a guide structure; 800. a first switch; 900. a bumper; 910. a trigger lever; 1000. a third switch; 1100. a second switch; 1200. a trigger.

[ detailed description ] embodiments

The technical solutions of the embodiments of the present invention are explained and illustrated below with reference to the drawings of the embodiments of the present invention, but the following embodiments are only preferred embodiments of the present invention, and not all embodiments. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative effort belong to the protection scope of the present invention.

Example one

Referring to fig. 1 to 8, the electric nail gun in the preferred embodiment includes a housing (not shown), a hammer 100, an elastic element 200 and a driving device are disposed in the housing, the hammer 100 is provided with a punching sheet for punching nails, the elastic element 200 is a spring, the driving device includes a motor 300, a driving plate 400 and a driving pin protruding from the driving plate 400, the driving pin is located below the hammer 100, the motor 300 includes a motor shaft, the motor shaft is a non-circular shaft, such as a D-shaped shaft, a square shaft, a spline shaft, etc., the driving plate 400 is provided with a non-circular hole engaged with the motor shaft, so that the motor 300 drives the driving plate 400 to rotate to move the driving pin from a low position to a high position.

The hammer 100 is provided with a stepped surface above the driving pin, the stepped surface comprises a high surface 110 and a low surface 120, the driving pin comprises a first pin rod 500 and a second pin rod 600 which are distributed in a staggered way in the radial direction, the distance H1 between the first pin rod 500 and the rotating shaft of the driving disc 400 is smaller than the distance H2 between the second pin rod 600 and the rotating shaft of the driving disc 400, the outer peripheral side of the first pin rod 500 is provided with a plane 510, when the electric nail gun is used, when the electric motor 300 rotates towards the direction of the first pin rod 500 by driving the driving disc 400, the driving pin can push the hammer 100 to move upwards, when the hammer 100 moves upwards to the high position, the elastic element 200 is compressed, at the moment, the first pin rod 500 is located at the position of 12 points, the position of the first pin rod 500 is higher than the position of the second pin rod 600, the plane 510 of the first pin rod 500 supports the high surface 110, the second pin rod 600 supports the low surface 120, thereby realizing two supports of the hammer 100, and the plane 510 contacts with the high surface 110, therefore, the supporting stability of the impact hammer 100 is improved, the impact hammer 100 is in a state of stress balance under the pressure of the elastic element 200 and the supporting of the transmission pin, the reverse rotation of the transmission disc 400 is prevented, and the transmission pin can be stopped at a high position.

Specifically, the driving plate 400 in this embodiment is an eccentric wheel, the first pin 500 and the second pin 600 are arranged at a position where the eccentric wheel is far away from the rotating shaft of the eccentric wheel, the eccentric wheel is compared with a round wheel, the overall size can be reduced, the purpose of reducing the weight and the cost is achieved, the length of the first pin 500 is smaller than that of the second pin 600, the high surface 110 is close to the driving plate 400, the low surface 120 is far away from the driving plate 400, the design is such that the axis of the first pin 500 can be straight, the structure of the first pin 500 is simplified, and the processing difficulty is reduced.

Preferably, the cross section of the first pin 500 is D-shaped, the plane of the D-shaped line forms the plane 510, and the cross section of the second pin 600 is circular. So design, can smoothly promote the high level with impact hammer 100 through the cambered surface of first pin 500 and second pin 600, can be again when impact hammer 100 is located the high level, realize the stable support to impact hammer 100 through plane 510 and the cooperation of high face 110 to guarantee that impact hammer 100 can stagnate at the high level.

In addition, the hammer 100 of the present embodiment is provided with a mounting groove 130 having an open upper end, and the elastic member 200 is connected between the bottom of the mounting groove 130 and the top of the housing. By the design, the structure is more compact, the elastic element 200 can be guided by the mounting groove 130, and the elastic element 200 is prevented from being blocked due to unsmooth expansion.

In order to form the stepped surface, the bottom of the mounting groove 130 in this embodiment includes a high plate 131 and a low plate 132, the high plate 131 and the low plate 132 are respectively formed by bending two side walls of the mounting groove 130 towards the inside of the mounting groove 130, the high plate 131 is located inside the low plate 132, so that the high plate 131 is higher than the low plate 132, the high plate 131 protrudes out of the low plate 132 towards the transmission plate 400, the bottom surface of the protruding portion forms the high surface, and the bottom surface of the low plate 132 forms the low surface 120, thereby facilitating the molding of the high surface 110 and the low surface 120, and reducing the processing difficulty.

It is understood that in other embodiments of the present invention, the bottom of the mounting groove is a bottom plate, and the bottom surface of the bottom plate is cut to form the stepped surface.

In order to prevent the hammer 100 from deviating when sliding vertically, a guide structure 700 slidably engaged with the hammer 100 is disposed in the housing in this embodiment, the guide structure 700 includes a bottom edge, a U-shaped side edge, and a top edge, the bottom edge, the U-shaped side edge, and the top edge are connected to form a vertically extending guide groove, the hammer 100 is slidably mounted in the guide groove, the elastic element 200 penetrates through the top edge and is connected to the top of the housing, and the guide groove is disposed to guide the sliding of the hammer 100, thereby further ensuring the smoothness of the axial extension of the elastic element 200.

It will be appreciated that in other embodiments of the utility model the guide structure may also be a vertically extending rail on which the ram is slidably mounted.

In addition, the motor 300 in this embodiment is connected to a driving circuit, the housing is provided with a nail outlet, the housing is further provided with a first switch 800 for controlling the conduction of the driving circuit and an elastically mounted safety lever 900, the first switch 800 is a micro switch, and the micro switch is mounted on the outer side surface of the U-shaped side edge, so that the micro switch can be preassembled on the guide structure 700, and then the guide structure 700 is mounted in the housing, thereby facilitating the assembly of the micro switch. And be connected with the spring between the upper end of bumper 900 and guide structure or the casing, the vertical slidable mounting of bumper 900 is in the gap between guide structure and the casing, and bumper 900 runs through out the nail mouth, bumper 900 still is equipped with the trigger bar 910 that is located first switch 800 below, after bumper 900 is pressed, bumper 900 upwards slides and compression spring, so that trigger bar 910 triggers micro-gap switch makes drive circuit switch-on, drive circuit switches on the back, motor 300 drives driving disc 400 corotation so that the driving pin will dash hammer 100 lifting to the high position, and then make elastic element 200 be the energy storage of punching the nail.

In order to stop the motor 300 when the first pin 500 rotates to the 12 th position, in this embodiment, a third switch 1000 for controlling the driving circuit to be turned off is further disposed in the housing, the third switch 1000 is a photoelectric coupler, the trigger 140 is disposed on the hammer 100, and when the hammer 100 is in the high position, the trigger 140 blocks the light transmission of the photoelectric coupler, so as to turn off the driving circuit and control the motor 300 to stop.

Secondly, a second switch 1100 and a trigger 1200 for triggering the second switch 1100 are installed on the housing, a return spring is arranged between one end of the trigger 1200 and the housing, the second switch 1100 is a microswitch, after a user presses the electric nail gun on a nailed plate to press the safety rod 900 and simultaneously presses the trigger 1200, the first switch 800 and the second switch 1100 are simultaneously triggered, at this time, the motor 300 drives the transmission disc 400 to continuously rotate forwards to reset the transmission pin and release the hammer 100, the elastic element 200 drives the hammer 100 to move downwards to enable the punching sheet to punch out a nail from the nail outlet, then the control board of the electric nail gun controls the motor 300 to drive the transmission disc 400 to continuously rotate forwards to lift the hammer 100 to a high position to enable the elastic element 200 to store energy for next nailing, namely, the first pin 500 stops to the 12-point position immediately after the nailing is finished, namely, before the first nailing, the safety rod 900 needs to be pressed to lift up, in the nailing process, after each nailing process is finished, the control board of the electric nailing gun controls the motor 300 to drive the transmission disc 400 to rotate forward so as to lift the punch hammer again, at the moment, the safety lever 900 does not need to be pressed, so that continuous nailing is realized, and the nailing speed is very high. In addition, by arranging the first switch 800 and the second switch 1100, the effect of double insurance can be achieved, namely, only after the first switch 800 and the second switch 1100 are triggered simultaneously, the electric nail gun can nail, and the nail hitting situation is avoided when the safety lever 900 or the trigger 1200 is pressed independently.

It will be appreciated that in other embodiments of the utility model, the motor may also drive the drive plate in reverse rotation to reset the drive pin and release the ram after the first and second switches have been triggered simultaneously.

It should be noted that, after the electric nail gun stops nailing for T seconds, for example, 15 seconds, the control board control motor 300 of the electric nail gun drives the transmission plate 400 to rotate reversely to release the impact hammer 100, so as to avoid deformation of the elastic element 200 due to long-term compression.

It will be appreciated that in other embodiments of the utility model the second pin is D-shaped in cross-section, the plane of the straight line of the D-shape forming the said plane, and the first pin is circular in cross-section, the plane of the second pin supporting the low plane and the first pin supporting the high plane when the ram is in the high position.

It is understood that in other embodiments of the present invention, the first switch, the second switch and the third switch may be magnetic switches, the trigger bar is provided with a first magnet for triggering the first switch, the trigger is provided with a second magnet for triggering the second switch, and the trigger is a third magnet for triggering the third switch.

It will be appreciated that in other embodiments of the utility model the positions of the high and low faces are reversed, with the first pin having an axial length greater than the axial length of the second pin, the first pin including a support section and a connecting section, the connecting section being connected between the support section and the drive disc, the support section and the connecting section forming a Z-shape, the support section supporting the high face when the ram is in the high position.

While the utility model has been described with reference to specific embodiments, it will be understood by those skilled in the art that the present invention may be practiced without limitation to such specific embodiments. Any modification which does not depart from the functional and structural principles of the present invention is intended to be included within the scope of the claims.

Claims (10)

1. The utility model provides an electric nail gun, includes the casing, be equipped with impact hammer, elastic element in the casing and be used for driving the impact hammer to move to high position and compress elastic element's drive arrangement, drive arrangement includes motor, driving disc and protruding the setting up drive pin on the driving disc, motor drive the driving disc rotates so that the drive pin promotes the impact hammer motion, a serial communication port, the impact hammer is equipped with the ladder face, the ladder face includes high face and low face, the drive pin is including radial first pin pole and the second pin pole that staggers the distribution, distance between the pivot of first pin pole and driving disc is less than distance between the pivot of second pin pole and driving disc, the periphery side of first pin pole or the periphery side of second pin pole are equipped with and are used for supporting the plane of ladder face, when the impact hammer is in the high position, first pin pole supports the high face, the second pin supports the lower face.

2. The electric nailer of claim 1, wherein the first pin shaft has a length less than the second pin shaft, the high face being disposed proximate the driving plate and the low face being disposed distal from the driving plate.

3. The electric nailer of claim 2, wherein said first pin has a D-shaped cross-section, the plane defined by the straight lines of said D-shape defines said plane, and said second pin has a circular cross-section.

4. The electric nailer of claim 2, wherein said ram is provided with a mounting channel open at an upper end, said resilient member being connected between a bottom of said mounting channel and a top of said housing.

5. The electric nailer of claim 4, wherein the bottom of said mounting channel includes a high plate and a low plate, said high plate and said low plate being formed by bending respective side walls of said mounting channel, a bottom surface of said high plate forming said high surface and a bottom surface of said low plate forming said low surface.

6. The electric nailer of claim 1, wherein the motor is connected to a drive circuit, the housing has a nail outlet, the housing further has a first switch disposed therein for controlling the conduction of the drive circuit, and a resiliently mounted safety lever extending through the nail outlet, the safety lever being depressed to trigger the first switch to conduct the drive circuit.

7. The electric nailer of claim 6, wherein a guide structure is provided in the housing in sliding engagement with the ram, the first switch being mounted on the guide structure.

8. The power nailer of claim 6, wherein a second switch is mounted on said housing and a trigger is provided for actuating said second switch, said motor driving said drive plate to rotate to reset said drive pin and release said hammer when said first switch and said second switch are simultaneously actuated.

9. The electric nailer of claim 6, wherein a third switch is provided in the housing for controlling the drive circuit to be turned off, and a trigger is provided on the hammer, wherein when the hammer is in the high position, the trigger triggers the third switch to turn off the drive circuit.

10. The electric nailer of any one of claims 1-9, wherein the motor includes a motor shaft, the motor shaft being a non-circular shaft, and the drive plate being provided with a non-circular hole for engaging the motor shaft.

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