CN111546292A - A locking device for the firing pin of an electric nail gun - Google Patents

Abstract

A locking device for the firing pin of an electric nail gun, comprising a gear box, a connecting head, an upper cylinder, a lower air cylinder, a cylinder seat, and a cylinder cover. There is an upper piston, a striker is arranged in the center of the left side wall of the upper piston, the left end of the striker passes through the striker hole to the left, a lower piston is arranged in the lower cylinder, an eccentric shaft seat is arranged in the gear box, and one side of the eccentric shaft seat is provided with The center of the left side wall of the lower piston is hinged with a piston arm, and one end of the piston arm is hinged on the eccentric shaft. The left side of the upper surface of the gear box is provided with a fixing hole and a positioning hole corresponding to the position of the fixing hole. The locking device for the striker of the electric nail gun of the present invention can not only automatically open the positioning piece under the condition that the internal pressure of the nail gun is sufficient to realize the effect of automatic nailing, but also can effectively avoid the position deviation of the positioning piece during the lifting and lowering process. The positioning piece can be reset quickly and accurately.

Description

A locking device for the firing pin of an electric nail gun

technical field

The invention relates to a locking device, in particular to a locking device for the striker of an electric nail gun.

Background technique

When the electric nail gun is not in use, the striker assembly will be locked by the positioning piece. When it is in use, the air pressure in the cylinder will continue to increase. At this time, the staff only needs to pull the positioning piece through external force to disengage it. The firing pin assembly can use the increased air pressure to push the firing pin out, so that the nail can be driven out by the firing pin. However, this method of nailing cannot realize automatic nailing. After each time the air pressure is sufficient, the staff needs to actively open the positioning piece, which is extremely It is troublesome and seriously affects the nailing efficiency. During the lifting process of the positioning piece, there is no restriction structure so that it can only move in the longitudinal direction. Therefore, during the process of opening the positioning piece, the angle of the positioning piece is easily deviated, resulting in the positioning piece being unable to quickly move. The reset will affect the locking efficiency of the striker assembly after the electric nail gun finishes nailing, thereby affecting the efficiency of the next nailing. Moreover, the traditional electric nail gun is limited by its own structure and cannot change the air pressure during nailing. The air pressure generated at the time is constant, resulting in constant nailing strength, but in the actual use process or during the nailing test process, the nails need to be driven to different depths, and the nailing strength is constant. In this case, only the same nailing depth can be produced, and it cannot adapt to other nailing requirements, which has serious limitations.

SUMMARY OF THE INVENTION

The purpose of the present invention to solve the existing technical problems is to provide a locking device for the striker of an electric nail gun, which can not only automatically open the positioning piece under the condition of sufficient air pressure inside the nail gun, realize the effect of automatic nailing, but also can effectively avoid positioning The positional deviation of the piece during the lifting process ensures that the positioning piece can be reset quickly and accurately, and can also adjust the air pressure inside the nail gun, so that the nails can be driven to different depths after being driven, and more nailing requirements.

The technical scheme adopted by the present invention to solve the above-mentioned technical problems is:

The invention discloses a locking device for the firing pin of an electric nail gun, which comprises a gear box, a connecting head, an upper cylinder, a lower air cylinder, a cylinder seat and a cylinder cover. An upper piston is arranged in the upper cylinder, a striker is arranged in the center of the left side wall of the upper piston, the left end of the striker passes through the striker hole to the left, a lower piston is arranged in the lower cylinder, and an eccentric shaft seat is arranged in the gear box. There is an eccentric shaft on the side, a piston arm is hinged on the center of the left side wall of the lower piston, and one end of the piston arm is hinged on the eccentric shaft. the positioning hole; the positioning hole is equipped with a matching positioning screw; the lower end of the positioning screw penetrates down into the inner space of the gearbox and is hinged with a rocker; the rocker is provided with a matching gear box. reset structure; the front side of the right end of the rocker is provided with a pressure plate corresponding to the position of the eccentric shaft; the rear side of the middle part of the rocker is provided with an extension arm; the end of the extension arm is provided with a plane guide plate; the plane guide plate There is an inclined surface guide plate inclined downward to the left, and the extension arm, the plane guide plate and the inclined surface guide plate are enclosed to form a C-shaped structure; the fixing hole is provided with a matching fixing tube, and the lower end of the fixing tube is pressed into the gear In the inner space of the box, the fixing pipe is tightly fitted with the fixing hole; a lifting rod is arranged in the fixing pipe; the upper end of the lifting rod passes through the fixing pipe and is provided with a positioning piece; Distributed positioning teeth; the opposite side of the striker and the positioning sheet is provided with a number of positioning grooves matching the positioning teeth; the upper end of the positioning screw is provided with a guide structure matching the positioning sheet; the lower end of the lifting rod is downward Passing through the fixed pipe and provided with a pressure regulating plate; the pressure regulating plate is provided with a pressure regulating structure; the pressure regulating structure includes a point contact corresponding to the position of the inclined surface guide plate; A lift spring sleeved outside the lift rod is arranged between the end faces.

The pressure regulating structure includes a first screw hole arranged on the right part of the pressure regulating plate, and the point contact is screwed into the first screw hole; the upper end of the point contact is provided with a slot, and the lower end of the point contact is spherical ; The point contact head is screwed with a tightening nut that fits with the upper surface of the pressure regulating plate.

The lower end of the point contact is provided with a ball-shaped embedding groove; the ball-shaped embedding groove is provided with a matching ball, and one end of the ball protrudes out of the ball-shaped embedding groove.

The rear side of the right part of the positioning piece is provided with a guide surface inclined forward and rightward; the guide structure includes a limit plate screwed on the upper end of the positioning screw, the limit plate is located above the striker; the lower surface of the limit plate is connected to the upper end of the positioning screw. There is a movable gap between the upper surfaces of the positioning pieces, and the movable gap is greater than the thickness of the positioning piece; the opposite side of the outer wall of the gear box and the limit plate is provided with a rear guide plate that fits with the guide surface, and one end of the limit plate is provided with a positioning tooth The front guide plate is attached to the front side wall; the lower end surface of the front guide plate is attached to the upper surface of the striker; the upper part of the positioning screw is provided with a backing plate located on the lower surface of the striker, and the upper surface of the backing plate is provided with A guide sleeve that fits the side wall of the striker.

The reset structure includes a second screw hole arranged in the middle of the rocker, and a fixing bolt is screwed into the second screw hole; the head of the fixing bolt is located above the rocker, and the head of the fixing bolt is covered with a buffer sheath, The buffer sheath is made of rubber; the diameter of the buffer sheath is larger than the width of the rocker; the fixing bolt is connected with the inner wall of the gear box through a tension spring.

The positioning teeth and the positioning grooves are both narrow at the bottom and wide at the top.

The left side of the connecting head is provided with a buffer hole that communicates with the striker hole, and the left end of the upper cylinder is connected to the position of the right end of the buffer hole; a ring-shaped buffer pad is arranged in the buffer hole, and the buffer pad is made of rubber; The inner wall of the lower side of the buffer hole is provided with a rib groove; the lower surface of the buffer pad is provided with a positioning rib matching the rib groove, and the positioning rib is embedded in the rib groove; the upper right side wall of the buffer pad is provided with a gap.

Both the positioning piece and the pressure regulating plate are provided with a waist-shaped hole; the upper and lower ends of the lifting rod are provided with clamping heads that match the waist-shaped holes, between the upper end clamping head and the positioning sheet, and the lower end clamping head and the adjusting head. The pressure plates are fixed by screws.

A positioning seat is arranged under the rocker and is installed in the hinged hole of the rocker, and the lower end of the positioning screw penetrates the positioning seat; the lower end of the positioning seat is provided with a fixing nut and the lower end of the positioning screw is fastened and fixed.

The beneficial effects of the present invention are:

Compared with the prior art, the locking device for the striker of the electric nail gun using the structure of the present invention can simultaneously drive the lower piston to move and the rocker to rotate by using the rotation of the eccentric shaft. When the lower piston moves, the pressurized gas acts on the upper piston. When the rocker rotates, the positioning piece will drive the positioning tooth to disengage from the positioning groove on the striker. When the positioning tooth is completely disengaged from the positioning groove, the upper piston will drive the striker to knock the nail out. The automatic nailing effect is realized, and there is no need to manually release the restriction of the positioning piece on the striker, which reduces the trouble in the nailing process and effectively improves the nailing efficiency. , the guiding structure always guides the positioning piece, so that the positioning piece can only move up and down, and the angle itself will not change, which can effectively avoid the position deviation of the positioning piece during the lifting process, and ensure that the positioning piece can be fast and accurate. It can also adjust the air pressure inside the nail gun through the pressure regulating structure, so that the upper piston can drive the striker to drive the nails under the action of different air pressures. When the force of the striker on the nails is different, different depths can be struck , to achieve the effect of adjustable nailing depth, so as to adapt to more nailing requirements.

Description of drawings

Fig. 1 is the structural representation of the locking device of the electric nail gun striker of the present invention;

Fig. 2 is the partial structural representation of the locking device of the electric nail gun striker of the present invention;

Figure 3 is a schematic structural diagram when the point contact is provided with balls;

Fig. 4 is the sectional view of the locking device of the electric nail gun striker of the present invention;

Fig. 5 is the top view of the locking device of the electric nail gun striker of the present invention;

Figure 6 is a partial rear view of the locking device of the electric nail gun striker of the present invention;

Figure 7 is a schematic structural diagram of the assembly of the lift rod, the positioning piece and the pressure regulating plate.

Fig. 8 is a side sectional view when the positioning teeth are assembled with the positioning grooves.

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments:

Please refer to FIGS. 1 to 8 , the present invention provides a locking device for the striker of an electric nail gun, including a gear box 1, a connector 2, an upper cylinder 3, a lower cylinder 4, a cylinder base 5, and a cylinder head 6, and the connector 2 is left The side wall is provided with a striker hole 7 that communicates with the upper cylinder 3, the upper cylinder 3 is provided with an upper piston 8, the center of the left side wall of the upper piston 8 is provided with a striker 9, and the left end of the striker 9 passes through the striker hole to the left. 7. The lower cylinder 4 is provided with a lower piston 10, the gear box 1 is provided with an eccentric shaft seat 11, one side of the eccentric shaft seat 11 is provided with an eccentric shaft 12, the center of the left side wall of the lower piston 10 is hinged with a piston arm 13, the piston One end of the arm 13 is hinged to the eccentric shaft 12, and the left side of the upper surface of the gear box 1 is provided with a fixing hole 14 and a positioning hole 15 corresponding to the position of the fixing hole 14; the positioning hole 15 is equipped with a matching positioning screw. 16; the lower end of the positioning screw 16 penetrates downward into the inner space of the gear box 1 and is hinged with a rocker 17; the rocker 17 is provided with a reset structure matching the gear box 1; the front of the right end of the rocker 17 There is a pressure plate 18 corresponding to the position of the eccentric shaft 12 on the side; an extension arm 19 is arranged on the rear side of the middle part of the rocker 17; the end of the extension arm 19 is provided with a plane guide plate 20; The inclined surface guide plate 21 inclined downward to the left, the extension arm 19, the plane guide plate 20 and the inclined surface guide plate 21 are enclosed to form a C-shaped structure; the fixing hole 14 is provided with a matching fixing tube 22. The fixing tube 22 The lower end is pressed into the inner space of the gear box 1, and the fixing tube is tightly fitted with the fixing hole; the fixing tube 22 is provided with a lifting rod 23; the upper end of the lifting rod 23 penetrates the fixing tube 22 and is provided with a positioning piece 24; The right front side of the positioning piece 24 is provided with a plurality of evenly distributed positioning teeth 25; the opposite side of the striker 9 and the positioning piece 24 is provided with a plurality of positioning grooves 26 matching the positioning teeth 25; the positioning screw 16 The upper end is provided with a guide structure matched with the positioning piece 24; the lower end of the lifting rod 23 penetrates the fixing pipe 22 downward and is provided with a pressure regulating plate 18; the pressure regulating plate 18 is provided with a pressure regulating structure; The structure includes a point contact 27 corresponding to the position of the inclined surface guide plate 21 ; a lift spring 28 sleeved outside the lift rod 23 is provided between the pressure regulating plate 18 and the lower end surface of the fixed tube 22 .

The pressure regulating structure includes a first screw hole 29 on the right part of the pressure regulating plate 18, and the point contact 27 is screwed into the first screw hole 29; the upper end of the point contact 27 is provided with a slot 30, and the point contact The lower end of the head 27 is spherical; the point contact 27 is externally screwed with a tightening nut 31 that fits with the upper surface of the pressure regulating plate 18 .

The lower end of the point contact 27 is provided with a spherical insert groove 32 ; the ball insert groove 32 is provided with a matching ball 33 , and one end of the ball 33 protrudes out of the spherical insert groove 32 .

The right rear side of the positioning piece 24 is provided with a guide surface 34 inclined forward and rightward; the guide structure includes a limit plate 35 screwed to the upper end of the positioning screw 16, and the limit plate 35 is located above the striker 9; the There is a movable gap between the lower surface of the limit plate 35 and the upper surface of the positioning piece 24, and the movable gap is greater than the thickness of the positioning piece 24; Guide plate 36, one end of the limit plate 35 is provided with a front guide plate 37 that fits with the front side wall of the positioning tooth 25; the lower end face of the front guide plate 37 is fitted with the upper surface of the striker 9; the positioning screw 16 The upper part is provided with a backing plate 38 located on the lower surface of the striker 9 , and the upper surface of the backing plate 38 is provided with a guide sleeve 3801 that fits with the side wall of the firing pin 9 .

The reset structure includes a second screw hole 39 arranged in the middle of the rocker 17, and a fixing bolt 40 is screwed into the second screw hole 39; the head of the fixing bolt 40 is located above the rocker 17, and the head of the fixing bolt 40 is The outer jacket has a buffer sheath 41, which is made of rubber; the diameter of the buffer sheath 41 is larger than the width of the rocker 17; the fixing bolt 40 and the inner wall of the gear box 1 are connected by a tension spring 42 .

The positioning teeth 25 and the positioning grooves 26 are both narrow at the bottom and wide at the top. The outer walls of the positioning teeth 25 and the inner walls of the positioning grooves 26 are both inclined surfaces.

The left side of the connecting head 2 is provided with a buffer hole 43 that communicates with the striker hole 7, and the left end of the upper cylinder 3 is connected to the position of the right end of the buffer hole 43; the buffer hole 43 is provided with a ring-shaped buffer pad 44, The buffer pad 44 is made of rubber; the inner wall of the lower side of the buffer hole 43 is provided with a rib groove 4301; the lower surface of the buffer pad 44 is provided with a positioning rib 4401 matching the rib groove 4301, and the positioning rib 4401 is embedded in the rib groove 4301 ; The upper right side wall of the buffer pad 44 is provided with a gap 4402.

The positioning piece 24 and the pressure regulating plate 18 are both provided with a waist-shaped hole 45 ; the upper and lower ends of the lifting rod 23 are provided with a clamping head 46 matching the waist-shaped hole 45 , and the upper clamping head 46 and the positioning piece 24 The space between the clamp head 46 at the lower end and the pressure regulating plate 18 are all fixed by screws 47 .

A positioning seat 51 is provided below the rocker 17 and is installed in the hinge hole 1701 of the rocker 17 . The lower end of the positioning screw 16 penetrates the positioning seat 51 ;

The using method of the present invention is as follows:

In actual use, the gear box 1 is provided with a motor for driving the eccentric shaft seat 11, and the connecting head is arranged on the upper right side of the gear box 1, the lower cylinder 4 is located directly under the upper cylinder 3, and the lower cylinder 4 is arranged on the gear box 1. On the right side of the box 1, the right end of the upper cylinder 3 and the right end of the lower cylinder 4 are connected through the cylinder seat 5, the cylinder head 6 is covered outside the cylinder seat 5, and the cylinder seat 5 is provided with an upper air hole 48 that communicates with the upper cylinder 3, and The lower ventilation hole 49 communicates with the lower cylinder 4; the side wall of the cylinder head 6 opposite to the cylinder seat 5 is provided with a ventilation chamber 50, and the upper ventilation hole 48 and the lower ventilation hole 49 communicate with each other through the ventilation chamber 50, When the motor drives the eccentric shaft seat 11, the eccentric shaft 12 rotates accordingly, and the eccentric shaft 12 is hinged with the piston arm 13. At this time, the eccentric shaft 12 pushes the lower piston 10 to the right through the piston arm 13, and the lower piston 10 follows the The trajectory of the lower cylinder 4 moves to the right, and the gas in the lower cylinder 4 is squeezed into the ventilation chamber 50 through the lower ventilation hole 49. As the lower piston 10 continues to move to the right, the air pressure in the ventilation chamber 50 continues to rise. , the pressurized gas will act on the upper piston 8 through the upper vent hole 48, and push the upper piston 8 to the left. At this moment, the striker is restricted by the positioning piece 24, and the upper piston 8 cannot move to the left.

When the eccentric shaft 12 rotates to a certain angle, it will contact with the pressing plate 18 on the front side of the right end of the rocker 17 to push the rocker 17. At this time, the rocker 17 rotates with the positioning screw 16 as the center, and the tension spring 42 is pulled Pull and generate elastic force, as the rocker 17 rotates, the inclined surface guide plate 21 will gradually move to the point just below the point contact 27, and finally the lower end of the point contact The inclined surface guide plate 21 continues to rotate and move. Since the inclined surface guide plate 21 is inclined downward to the left, the extension arm 19 , the plane guide plate 20 and the inclined surface guide plate 21 are enclosed to form a C-shaped structure, and the point contact 27 will be inclined by the inclined surface guide plate 21 . The upper surface of the contactor moves upward continuously, and the point contact 27 is fixed on the pressure regulating plate 18, and the pressure regulating plate 18 is fixed on the lower end of the lifting rod 23. When the point contact 27 moves up, the point contact 27 will pass the pressure regulation The plate 18 drives the lifting rod to move upward. During the upward movement of the lifting rod 23, the lifting spring 28 is compressed and generates elastic force. The plate 24 drives the positioning teeth 25 to gradually move up and separate from the positioning grooves 26 on the striker 9. When the point contacts 27 move from the inclined surface guide plate 21 to the plane guide plate 20, the positioning teeth 25 are completely removed from the positioning groove 26. get out.

Since the guide surface 34 on the right rear side of the positioning piece 24 is inclined forward and rightward, when the rear guide plate 36 is in contact with the guide surface 34 , the rear guide plate 36 will simultaneously align the rear and side directions of the positioning piece 24 . Limiting and guiding, when the front guide plate 37 is in contact with the front side wall of the positioning tooth 25, the front guide plate 37 will limit and guide the front of the positioning piece 24. Under the cooperation of the front guide plate 37 and the rear guide plate 36, the positioning The sheet 24 can only move up and down, and the angle of the positioning sheet 24 itself will not have any deviation, thereby effectively avoiding the situation that the positioning sheet 24 is difficult to reset quickly or even cannot be reset due to the angle deviation during the upward movement. When the positioning sheet 24 moves up When reaching the top of the striker 9, the positioning teeth 25 of the positioning piece 24 will be disengaged from the positioning groove 26 of the striker 9, because there is a movable gap between the lower surface of the limit plate 35 and the upper surface of the positioning piece 24, and the movable gap is larger than that of the positioning piece. 24 thickness, so the positioning piece 24 can drive the positioning tooth 25 to escape from the positioning groove 26 smoothly, and the upward movement of the positioning piece 24 will not be restricted by the limit plate 35. After losing the restriction of the positioning tooth 25, the striker 9 can move freely. The piston 8 quickly drives the striker 9 to move to the left under the action of the high-pressure gas applied to itself, and the striker 9 then drives the nail out of the gun muzzle to complete the nailing action, and the front guide plate 37 cooperates with the backing plate 38. The movement track of the striker 9 is limited to the same plane to prevent the striker from bending upwards or downwards, and the upper surface of the backing plate 38 is provided with a guide sleeve 3801 that fits with the side wall of the striker 9. The 9 is restricted when it is bent to the side, which effectively avoids the radial bending of the suspended part of the striker 9 due to the force, and ensures the stability of the striker 9 during use.

After completing one nailing, the motor will drive the eccentric shaft seat 11 to drive the eccentric shaft 12 to continue to rotate, so that the eccentric shaft 12 is reset. The gas will be sucked into the lower cylinder 4 through the upper ventilation hole 48, the ventilation chamber 50, and the lower ventilation hole 49 in sequence, the air pressure of the upper cylinder 3 will change, and the upper piston 8 will move to the right and reset accordingly. During reset, the upper piston 8 drives the striker 9 to move to the right to reset. At the same time, as the eccentric shaft 12 rotates and resets, the eccentric shaft 12 is no longer pressed on the pressure plate. After losing the pressure applied to the pressure plate 18, the rocker 17 is pulling The spring 42 resets under the elastic force of the spring 42. When the rocker 17 is reset, the contact head 27 will gradually separate from the inclined guide plate 21 along the inclined upper surface of the inclined surface guide plate 21. During this process, the pressure regulating plate 18 is lifted and lowered by The elastic force of the spring 28 gradually moves down and resets. When the point contact 27 is completely separated from the inclined surface guide plate 21, the pressure regulating plate 18 drives the point contact 27 to reset completely. At the same time, when the positioning piece 24 is separated from the striker 9, the lifting The spring 28 resets to generate downward pressure and acts on the pressure regulating plate 18, the positioning piece 24 returns downward, and the lower surface is attached to the striker 9 until the striker 9 retracts in place, and the positioning piece 24 enters the corresponding positioning groove of the striker 9 26. The striker 9 is in the locked state again, and the limit teeth at the abutting surface of the positioning piece 24 and the striker 9 are chamfered, so that the positioning piece 24 can quickly enter the striker positioning groove 26.

When the rocker 17 is reset, the elastic force of the tension spring 42 acts on the rocker 17 instantaneously, which will inevitably cause the rocker 17 to hit the inner wall of the gear box 1. Since the diameter of the buffer sheath 41 is larger than that of the rocker 17 The width of the buffer sheath 41 will replace the rocker 17 and collide with the inner wall of the gearbox 1. The buffer sheath 41 is made of rubber material, which can effectively buffer the impact force through the elastic properties of its own material, thereby effectively preventing the rocker 17 from colliding with the inner wall of the gearbox 1. The inner wall of the gearbox 1 is damaged.

When it is necessary to adjust the voltage of the electric nail gun, the pressure regulation can be completed by changing the height position of the point contact 27 of the pressure regulating structure. The upper end of 27 is rotated, and the contact head 27 will move up and down along the threaded trajectory of the first screw hole 29. When the height position of the contact head 27 is adjusted, a flat-blade screwdriver can be inserted into the slot 30. Thereby, the point contact 27 is fixed, and then the tightening nut 31 is rotated by the external wrench, so that the point contact is fastened on the pressing plate 18 through the tightening nut 31, and the height position of the point contact 27 is effectively adjusted. After the completion of the stability, there will be no looseness. When the height position of the point contact 27 changes, the distance that the inclined guide plate 21 can touch the point contact 27 changes accordingly, and the positioning teeth 25 of the positioning piece 24 change accordingly. The positioning groove 26 on the striker 9 can be disengaged earlier or later, and at the same time, the eccentric shaft 12 can be rotated by a smaller angle to be able to touch the pressure plate 18 of the rocker 17 or be rotated by a larger angle to contact On the pressing plate 18 of the rocker 17, as the rotation angle of the eccentric shaft 12 changes, the moving distance of the lower piston 10 changes accordingly. When the air pressure acting on the upper piston 8 is different, the force with which the striker 9 hits the nail is also different, and the different force can drive the nail to different depths, so as to realize the effect of adjustable nailing depth, which can adapt to more Pinning requirements.

The lower end of the point contact 27 is spherical, which can effectively reduce the friction between the point contact 27 and the inclined surface guide plate 21 and the plane guide plate 20, so as to ensure that the point contact 27 can smoothly follow the upper surface of the inclined surface guide plate 21, The upper surface of the plane guide plate 20 slides, and the bottom end of the point contact 27 is provided with a ball-shaped inlay groove 32, and a ball-shaped inlaid groove 32 is provided with a matching ball 33, and one end of the ball 33 protrudes to the ball-shaped inlaid groove In addition to 32, the existence of the balls 33 can further reduce the friction between the point contact 27 and the inclined surface guide plate 21 and the plane guide plate 20. When the point contact 27 slides, the balls 33 will use the inclined surface guide plate 21, the plane guide plate 21, the plane guide plate 21 and the plane guide plate 20 to slide. The contact of the guide plate 20 causes rolling, and the rolling balls 33 can ensure the smoothness of the sliding of the point contact 27 to the greatest extent.

From the above, it can be seen that the present invention can use the rotation of the eccentric shaft 12 to simultaneously drive the lower piston 10 to move and drive the rocker 17 to rotate. When the lower piston 10 moves, the pressurized gas acts on the upper piston 8 and pushes it , When the rocker 17 rotates, the positioning piece 24 will drive the positioning tooth 25 to disengage from the positioning groove 26 on the striker 9. When the positioning tooth 25 is completely disengaged from the positioning groove 26, the upper piston 8 will drive the striker 9 to disengage the nail. Knock out, realize automatic nailing effect, no need to manually release the restriction of the positioning sheet 24 on the striker 9, reduce the trouble in the process of nailing, effectively improve the nailing efficiency, and the positioning sheet drives the positioning teeth 25 from the striker 9. When the positioning groove 26 is disengaged, the guiding structure always guides the positioning piece, so that the positioning piece 24 can only move up and down, and the angle itself will not change, which can effectively prevent the positioning piece 24 from appearing in the lifting process. In the case of deviation, it is ensured that the positioning piece 24 can be reset quickly and accurately, and the air pressure inside the nail gun can also be adjusted through the pressure regulating structure, so that the upper piston can drive the striker to drive out the nails under the action of different air pressures. When the striker 9 is applied to the nails When the strength of the nails is different, different depths can be punched to achieve the effect of adjustable nailing depth, so as to adapt to more nailing requirements.

The positioning teeth 25 and the positioning grooves 26 are both narrow at the bottom and wide at the top. The outer walls of the positioning teeth 25 and the inner walls of the positioning grooves 26 are both inclined planes, and the outer walls of the positioning teeth 25 and the inner walls of the positioning grooves 26 fit together. It is far greater than the friction force between the inclined surfaces, so the positioning tooth 25 can be more smoothly separated from the positioning tooth 25 under the cooperation of its own inclined surface and the inclined surface of the positioning groove 26, which effectively avoids blocking when the positioning tooth 25 releases the restriction of the striker 9. Case.

The left side of the connector 2 is provided with a buffer hole 43 that communicates with the striker hole 7, the left end of the upper cylinder 3 is connected to the position of the right end of the buffer hole 43, and the buffer hole 43 is provided with a ring-shaped buffer pad 44. The buffer pad 44 is: It is made of rubber. When the upper piston 8 moves with the striker 9 under the action of the maximum air pressure, the upper piston 8 will bump into the buffer hole 43. At this time, the upper piston 8 will collide with the buffer pad 44, and the buffer pad 44 will The upper piston 8 will be effectively buffered to effectively prevent the upper piston 8 from directly hitting the inner wall of the connector 2 and causing damage. The inner wall of the lower side of the buffer hole 43 is provided with a rib groove 4301, and the lower surface of the buffer pad 44 is provided with a rib groove. The positioning rib 4401 matched with 4301, the positioning rib 4401 is embedded in the rib groove 4301, the upper right side wall of the buffer pad 44 is provided with a gap 4402, the existence of the gap 4402 makes the buffer pad 44 only have the lower right side wall and the upper piston 8 contact.

The positioning piece 24 and the pressure regulating plate 18 are provided with waist-shaped holes 45 , and the upper and lower ends of the lifting rod 23 are provided with clamping heads 46 that match the waist-shaped holes 45 . The clamping head 46 and the pressure regulating plate 18 are all fixed by screws 47, which is convenient for the disassembly of the positioning piece 24, the pressure regulating plate 18 and the lifting rod 23, and is convenient for maintenance and replacement.

Claims (9)

1. The utility model provides a locking device of electronic nail rifle firing pin, including the gear box, the connector, go up the cylinder, lower cylinder, the cylinder block, the cylinder head, connector left side lateral wall is equipped with the firing pin hole that link up mutually with last cylinder, upward be equipped with the piston in the cylinder, it is equipped with the firing pin to go up piston left side lateral wall center, the firing pin left end passes the firing pin hole left, be equipped with lower piston in the lower cylinder, be equipped with eccentric shaft seat in the gear box, eccentric shaft seat one side is equipped with the eccentric shaft, lower piston left side lateral wall center articulates there is the piston arm, piston arm one end articulates on the eccentric shaft: a fixing hole and a positioning hole corresponding to the fixing hole are formed in the left side of the upper surface of the gear box; a positioning screw matched with the positioning hole is arranged in the positioning hole; the lower end of the positioning screw rod penetrates into the internal space of the gear box downwards and is hinged with a rocker; a reset structure matched with the gear box is arranged on the rocker; a pressing plate corresponding to the position of the eccentric shaft is arranged on the front side of the right end of the rocker; an extension arm is arranged at the rear side of the middle part of the rocker; the end part of the extension arm is provided with a plane guide plate; the plane guide plate is provided with an inclined plane guide plate which inclines to the left lower side, and the extension arm, the plane guide plate and the inclined plane guide plate are enclosed to form a C-shaped structure; a fixing pipe matched with the fixing hole is arranged in the fixing hole, the lower end of the fixing pipe is pressed into the internal space of the gear box, and the fixing pipe is tightly matched and fixed with the fixing hole; a lifting rod is arranged in the fixed pipe; the upper end of the lifting rod penetrates out of the fixing pipe and is provided with a positioning sheet; a plurality of positioning teeth which are uniformly distributed are arranged on the front side of the right part of the positioning sheet; a plurality of positioning grooves matched with the positioning teeth are formed in one side of the firing pin opposite to the positioning sheet; the upper end of the positioning screw is provided with a guide structure matched with the positioning sheet; the lower end of the lifting rod penetrates out of the fixed pipe downwards and is provided with a pressure regulating plate; the pressure regulating plate is provided with a pressure regulating structure; the pressure regulating structure comprises a point contact corresponding to the position of the inclined guide plate; and a lifting spring sleeved outside the lifting rod is arranged between the pressure regulating plate and the lower end face of the fixed pipe.

2. The locking device for the striker of the electric nail gun as claimed in claim 1, wherein: the pressure regulating structure comprises a first screw hole arranged at the right part of the pressure regulating plate, and the point contact is screwed in the first screw hole; the upper end of the point contact is provided with a straight groove, and the lower end part of the point contact is spherical; the outer screw of point contact has a fastening nut who laminates mutually with pressure regulating plate upper surface.

3. The locking device for the striker of the electric nail gun as claimed in claim 2, wherein: the lower end part of the point contact is provided with a spherical caulking groove; the ball caulking groove is internally provided with a ball matched with the ball caulking groove, and one end of the ball is protruded out of the ball caulking groove.

4. The locking device for the striker of the electric nail gun as claimed in claim 1, wherein: the rear side of the right part of the positioning sheet is provided with a guide surface which inclines forwards and rightwards; the guide structure comprises a limit plate in threaded connection with the upper end of the positioning screw rod, and the limit plate is positioned above the firing pin; a movable gap is formed between the lower surface of the limiting plate and the upper surface of the positioning plate, and the movable gap is larger than the thickness of the positioning plate; a rear guide plate attached to the guide surface is arranged on one side, opposite to the limiting plate, of the outer wall of the gear box, and a front guide plate attached to the side wall of the front side of the positioning tooth is arranged at one end of the limiting plate; the lower end surface of the front guide plate is attached to the upper surface of the firing pin; the upper part of the positioning screw is provided with a backing plate positioned on the lower surface of the firing pin, and the upper surface of the backing plate is provided with a guide sleeve attached to the side wall of the firing pin.

5. The locking device for the striker of the electric nail gun as claimed in claim 1, wherein: the reset structure comprises a second screw hole arranged in the middle of the rocker, and a fixing bolt is screwed in the second screw hole; the head of the fixing bolt is positioned above the rocker, a buffer sheath is sleeved outside the head of the fixing bolt, and the buffer sheath is made of rubber; the diameter of the buffer sheath is larger than the width of the rocker; the fixing bolt is connected with the inner wall of the gear box through a tension spring.

6. The locking device for the striker of the electric nail gun as claimed in claim 1, wherein: the positioning teeth and the positioning grooves are narrow at the bottom and wide at the top, the outer walls of the positioning teeth and the inner walls of the positioning grooves are inclined planes, and the outer walls of the positioning teeth and the inner walls of the positioning grooves are attached.

7. The locking device for the striker of the electric nail gun as claimed in claim 1, wherein: the left side of the connector is provided with a buffer hole communicated with the striker hole, and the left end of the upper cylinder is connected to the orifice position at the right end of the buffer hole; an annular buffer cushion is arranged in the buffer hole, and the buffer cushion is made of rubber; a rib groove is formed in the inner wall of the lower side of the buffer hole; the lower surface of the buffer cushion is provided with positioning ribs matched with the rib grooves, and the positioning ribs are embedded in the rib grooves; a notch is formed in the side wall of the right side of the upper portion of the buffering cushion.

8. The locking device for the striker of the electric nail gun as claimed in claim 1, wherein: the positioning plate and the pressure regulating plate are provided with waist-shaped holes; the upper end and the lower end of the lifting rod are provided with clamping heads matched with the waist-shaped holes, and the upper clamping head and the positioning plate and the lower clamping head and the pressure regulating plate are fixed through screws.

9. The locking device for the striker of the electric nail gun as claimed in claim 1, wherein: a positioning seat is arranged below the rocker and is arranged in the rocker hinge hole, and the lower end of the positioning screw penetrates through the positioning seat; and a fixing nut is arranged at the lower end of the positioning seat and is screwed and fixed with the lower end of the positioning screw rod.

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