CN219235219U - Lithium electric fastener driving tool - Google Patents

Abstract

The utility model discloses a lithium electric fastener driving tool, which comprises a gun body, wherein the working end of the gun body comprises a gun head and a gun barrel assembly connected with the gun head; the gun body is internally provided with an air cylinder and an air cylinder seat positioned at the lower end of the air cylinder, and the bottom end of the air cylinder seat is connected with the gun head; the gun barrel assembly comprises a guide rod and a gun barrel; wherein: the installation cavity has been seted up to the cylinder block bottom, is equipped with quick change structure in the installation cavity, and the top of guide bar is connected with the rifle head through quick change structure, and quick change structure can loosen or press from both sides tight guide bar. Compared with the prior art, the lithium-ion fastener driving tool has a simpler structure and reduces the production cost.

Description

Lithium electric fastener driving tool

Technical Field

The utility model relates to an electric tool, in particular to a lithium electric fastener driving tool.

Background

As a tool capable of driving a fastener, a driving tool including at least a striker capable of driving a fastener into an object and a driving portion for driving the movement of the striker is currently known, in which the driving portion includes a cylinder, a pressure accumulation portion communicating with the cylinder, and a piston disposed in the cylinder for reciprocating movement. Air enters the pressure reservoir from the outside and is compressed in the pressure reservoir, and then compressed air enters the cylinder and drives the piston to move, the movable piston drives the striker to move, and the striker impacts the fastener, so that the fastener is driven into an object.

The gun head at the working end of the driving tool gun body is connected with a gun barrel assembly, so as to adapt to nailing requirements of different occasions, the gun barrel assembly is generally provided with a plurality of different types of structures, such as an iron sheet gun barrel, a rotatable pipe clamp gun barrel, a general seat clamp gun barrel, a special seat clamp gun barrel and the like. In order to facilitate replacement of the gun barrel assembly, chinese patent document CN215037167U discloses a gun barrel switching mechanism comprising a safety bracket connecting block and a guide rod of the gun barrel assembly connected to the safety bracket connecting block; a locking structure is arranged on the safety support connecting block, and when the locking structure is in a locking state, the guide rod is fixed on the safety support connecting block; when the locking structure is in an unlocking state, the guide rod is separated from the safety support connecting block. By adopting the gun barrel switching mechanism of the nail gun, the gun barrel assembly can be quickly replaced in any occasion.

Compared with the conventional gun barrel replacement mode, the gun barrel assembly can be quickly replaced in the prior art, but because the locking structure in the prior art needs the safety support connecting block to realize installation, the structure is complex, and the production cost is improved.

Disclosure of Invention

The utility model provides a lithium electric fastener driving tool for solving the technical problems of complex structure and high cost of the existing driving tool, which comprises a gun body, wherein the working end of the gun body comprises a gun head and a gun barrel assembly connected with the gun head; the gun body is internally provided with an air cylinder and an air cylinder seat positioned at the lower end of the air cylinder, and the bottom end of the air cylinder seat is connected with the gun head; the gun barrel assembly comprises a guide rod and a gun barrel; wherein: the installation cavity has been seted up to the cylinder block bottom, is equipped with quick change structure in the installation cavity, and the top of guide bar is connected with the rifle head through quick change structure, and quick change structure can loosen or press from both sides tight guide bar.

In this scheme, utilize the locking of quick change structure's setting quick change structure or loosen, easy operation, and quick change structure is the setting at the installation intracavity of cylinder block to do not need additionally to set up mounting structure, compare with prior art, the structure is simpler, has reduced manufacturing cost.

Preferably, the quick-change structure comprises a quick-change inner slide and a quick-change outer slide sleeve sleeved on the quick-change inner slide, the guide rod is connected with the quick-change inner slide, and the quick-change outer slide sleeve enables the quick-change inner slide to lock or unlock the guide rod when axially sliding along the quick-change inner slide.

In this scheme, utilize the slip between quick change outer sliding sleeve and the quick change inner sliding sleeve can realize locking or loosening the guide bar, simple structure.

Preferably, the top of the guide rod is provided with an inner groove, a through hole is formed in the side wall of the quick-change inner sliding sleeve in a penetrating mode, a locking piece is arranged in the through hole, when the quick-change outer sliding sleeve axially slides along the quick-change inner sliding sleeve, the locking piece is extruded to enter the quick-change inner sliding sleeve and lock the guide rod, the inner groove is an arc-shaped groove, and the locking piece is a spherical piece matched with the arc-shaped groove.

In the scheme, the guide rod is locked by further utilizing the cooperation between the locking piece and the inner groove, so that the structure is simple; meanwhile, the arc-shaped groove is matched with the spherical part, so that the sliding between the quick-change inner sliding sleeve and the quick-change outer sliding sleeve is more convenient.

Preferably, the quick-change structure is further provided with an anti-falling assembly for preventing the quick-change outer sliding sleeve from falling off, the anti-falling assembly comprises a limiting groove arranged on the quick-change outer sliding sleeve and a limiting piece arranged on the quick-change inner sliding sleeve, the limiting groove is axially formed in the axial direction of the quick-change outer sliding sleeve, the limiting piece is radially arranged in the quick-change inner sliding sleeve, and the end portion of the limiting piece stretches into the limiting groove.

In this scheme, the setting of the anticreep subassembly that prevents quick change outer sliding sleeve and drop guarantees the normal work of quick change structure, utilizes the cooperation of restriction piece and restriction groove can prevent that quick change outer sliding sleeve from dropping, simple structure.

Preferably, the nailing device also comprises a depth adjusting structure for adjusting the nailing depth, wherein the depth adjusting structure is positioned in the mounting cavity and is connected with the upper end of the quick-change outer sliding sleeve, and the upper end of the quick-change outer sliding sleeve can axially move along the depth adjusting structure; the depth adjusting structure comprises an adjusting limiting block, the adjusting limiting block is provided with an adjusting groove extending axially inwards, the upper end of the quick-change outer sliding sleeve stretches into the adjusting groove, and the quick-change outer sliding sleeve slides axially along the adjusting groove after rotating; the nut which is limited to rotate is arranged in the adjusting groove, and the upper end of the quick-change outer sliding sleeve is a screw rod matched with the nut and extends into the nut; the upper end of the screw rod is provided with an anti-falling piece for preventing the screw rod from falling off the nut.

In the scheme, the nailing depth is adjusted in the rotating process of the quick-change outer sliding sleeve by utilizing the matching of the adjusting limiting block in the depth adjusting structure and the quick-change outer sliding sleeve, so that the operation is simple; meanwhile, the setting of the anti-falling piece can prevent the outer sliding sleeve from falling off, and on the other hand, the adjusting range from the lower surface of the anti-falling piece to the upper end surface of the nut is the nailing depth, so that the structure is simple.

Preferably, a nailing firing pin is arranged in the cylinder, a fluted disc is arranged on one side of the firing pin, and cylindrical pins which are in one-to-one correspondence with the tooth grooves of the firing pin are arranged on the fluted disc; the anti-impact pawl structure is used for preventing the firing pin from falling when the tooth slot is not corresponding to the cylindrical pin.

In this scheme, the design of anti-impact pawl structure can prevent the striker and the dead condition of latch after the impact takes place for the striker when fluted disc and striker cooperation dislocation to guarantee driving tool's normal work.

Preferably, the anti-impact pawl structure comprises a pawl arranged on the cylinder seat and a limit stop arranged on one side of the firing pin, which faces the pawl, wherein one end of the pawl is hinged with the cylinder seat through a connecting pin, and a return piece is arranged between the cylinder seat and the pawl; when the cylindrical pins of the fluted disc can enter the tooth grooves in a one-to-one correspondence mode, the pawls can slide through the limit stop, and when the cylindrical pins are misplaced with the tooth grooves, the pawls prop against the limit stop.

In this scheme, utilize limit stop and pawl and return's cooperation to realize preventing the function that the firing pin falls when fluted disc and firing pin cooperation dislocation to prevent that the firing pin from taking place to strike with the fluted disc, simple structure.

Preferably, the anti-impact pawl structure further comprises a protrusion arranged on the fluted disc, and in the rotation process of the fluted disc, when the last cylindrical pin leaves the last tooth slot, the protrusion contacts with the pawl and pulls out the pawl, and the limit stop is staggered with the pawl; when the bulge is separated from contact with the pawl, the return piece pushes the pawl to prop against the firing pin; when the cylindrical pin and the tooth slot are misplaced, the pawl props against the limit stop block after the striker drops until the protrusion contacts with the pawl and pulls out the pawl, and then the striker continuously drops.

In this scheme, bellied setting can make the striker normally whereabouts when fluted disc and striker normal cooperation, simple structure.

Preferably, the gun body further comprises an air storage tank sleeved on the air cylinder, and the air cylinder is eccentrically arranged in the air storage tank and is communicated with the air storage area in the air storage tank.

In the scheme, after the cylinder is eccentrically designed, when a driving tool encounters an obstacle which cannot be overcome, such as a wall surface, the driving tool can be operated closer to the obstacle; meanwhile, the eccentric design can enable the gravity center to move towards the hand holding direction in consideration of the fact that the head of the driving tool is heavy, so that the hand stress during operation is reduced, and the use is more comfortable.

Preferably, the gun body is provided with a detachable cartridge clip assembly, the rear end of the cartridge clip assembly is provided with a tail cover of the cartridge clip assembly, the holding end of the gun body is provided with a chute, and the tail cover of the cartridge clip assembly is provided with a buckle capable of entering the chute; the sliding groove is provided with a positioning handle which can be opened and closed, one end of the positioning handle is provided with a pressure spring, the positioning handle is opened by stress, and the positioning handle is reset by the pressure spring after being released; the rear nail head is arranged at the working end of the gun body, a limit groove is arranged at the rear nail head, and the front end of the cartridge clip assembly can slide into the limit groove.

In this scheme, the setting of detachable cartridge clip assembly makes things convenient for quick assembly disassembly cartridge clip assembly, adopts the cooperation of cartridge clip assembly location handle and pressure spring to realize the dismantlement of cartridge clip assembly, realizes the location to the cartridge clip assembly through spacing recess on the back nail head simultaneously to can guarantee the accurate location installation of cartridge clip assembly on the rifle body, simple structure.

Preferably, the cartridge clip assembly is slidably connected with a plug, and a first trigger assembly capable of triggering the driving tool to stop working is arranged on the plug.

In this scheme, the setting of first trigger subassembly can trigger driving tool stop work when the nail surplus is little in the cartridge clip assembly to avoid appearing driving tool dry running's condition.

Preferably, the first trigger assembly comprises a first magnet and a first hall switch, the first magnet is mounted on the top, the first hall switch is arranged on one side of the cylinder seat, which faces the holding end of the gun body, and the first hall switch triggers the driving tool to stop working when the first magnet moves to a position corresponding to the first hall switch.

In this scheme, utilize the cooperation of first hall switch and first magnet to realize the triggering to driving tool, simple structure.

Preferably, a second trigger assembly is mounted on the striker for triggering the stopping of the driving means.

In this scheme, the setting of second trigger subassembly can trigger driving tool in time to stop work when faults such as driving tool appearance nailing to can avoid driving tool to continue work and lead to appearing the problem of damage when breaking down.

Preferably, the second triggering component comprises a second magnet arranged at the upper end of the firing pin and a second hall switch arranged on the cylinder seat, and in a period that the firing pin falls to the lowest point from the highest position and rises back, when the second magnet passes through the second hall switch twice, the second triggering component is not started, and when the second magnet does not pass through or passes through the second hall switch once, the second triggering component triggers the driving tool to stop working.

In this scheme, utilize the cooperation of second hall switch and second magnet to realize the triggering to driving tool, simple structure.

The utility model has the following beneficial effects:

1. the quick replacement structure can realize the quick replacement of the gun barrel assembly;

2. the setting of the adjusting limiting rod can adjust the nailing depth according to actual requirements;

3. the cartridge clip assembly capable of being detachably connected can be quickly replaced;

4. the first trigger component can trigger the driving tool to stop working when the residual quantity of nails in the cartridge clip assembly is small, so that the condition of idle running of the driving tool is avoided;

5. the second trigger component can trigger the driving tool to stop working in time when the driving tool has faults such as nailing and the like, so that the problem of damage caused by continuous working of the driving tool when the driving tool has faults can be avoided;

6. the design of the anti-impact pawl structure can prevent the striker from being locked after impact with the fluted disc when the fluted disc and the striker are in matching dislocation, so that the normal work of the driving tool is ensured;

7. the design of side air-filling is convenient and quick compared with the prior air-filling mode of disassembling the battery seat part;

8. the eccentric design of the air cylinder can be operated closer to an obstacle when the driving tool encounters the obstacle which cannot be overcome, such as a wall surface; meanwhile, the eccentric design can enable the gravity center to move towards the hand holding direction in consideration of the fact that the head of the driving tool is heavy, so that the hand stress during operation is reduced, and the use is more comfortable.

Drawings

FIG. 1 is a schematic view of an embodiment of a lithium-ion fastener-driving tool of the present utility model;

FIG. 2 is a front view of FIG. 1;

FIG. 3 is a top view of FIG. 2;

FIG. 4 is a schematic view of the quick change structure in a released state;

FIG. 5 is a cross-sectional view of A-A of FIG. 4;

FIG. 6 is a left side view of FIG. 4;

FIG. 7 is a cross-sectional view of B-B in FIG. 6;

FIG. 8 is a schematic view of the quick change structure in a locked condition;

FIG. 9 is a cross-sectional view of C-C of FIG. 8;

FIG. 10 is a left side view of FIG. 8;

FIG. 11 is a cross-sectional view of D-D of FIG. 10;

FIG. 12 is a schematic view of a depth adjustment structure at the shallowest level of nailing;

FIG. 13 is a cross-sectional view of E-E of FIG. 12;

FIG. 14 is a left side view of FIG. 12;

FIG. 15 is a cross-sectional view of F-F of FIG. 14;

FIG. 16 is a schematic view (1) of a cylinder block section;

FIG. 17 is a right side view of FIG. 16;

FIG. 18 is a schematic view of the depth adjustment structure at the deepest nailing;

FIG. 19 is a cross-sectional view of G-G of FIG. 18;

FIG. 20 is a right side view of FIG. 18;

FIG. 21 is a cross-sectional view of H-H of FIG. 20;

FIG. 22 is a schematic view (2) of a cylinder block portion;

FIG. 23 is a right side view of FIG. 22;

FIG. 24 is a schematic view (1) of the impact resistant pawl structure;

FIG. 25 is a schematic view (2) of the impact-resistant pawl structure;

FIG. 26 is a schematic diagram of an air reservoir;

FIG. 27 is a cross-sectional view of I-I of FIG. 26;

FIG. 28 is a schematic view of a clip assembly portion;

FIG. 29 is a top view of FIG. 28;

FIG. 30 is a cross-sectional view of J-J of FIG. 28;

fig. 31 is a schematic view (3) of the cylinder block portion.

Detailed Description

The following is a further detailed description of the embodiments:

1. definition of the definition

First working position: refers to the highest part of the limiting groove in the axial direction;

second working position: refers to the lowest part of the limiting groove in the axial direction.

2. Reference numerals in the drawings of the specification include: the gun body 10, the gun head 11, the gun barrel assembly 12, the cylinder seat 13, the cylinder 131, the guide rod 14, the gun barrel 15, the quick-change inner slide 16, the quick-change outer slide 17, the inner groove 18, the locking piece 19, the limiting groove 20, the limiting piece 21, the adjusting limiting block 22, the adjusting groove 23, the nut 24, the fastening screw 241, the anti-falling piece 25, the firing pin 26, the fluted disc 27, the cylindrical pin 28, the pawl 29, the limit stop 30, the return piece 31, the protrusion 32, the air storage tank 33, the clip assembly 34, the clip assembly tail cover 35, the buckle 36, the positioning handle 37, the rear nail head 38, the plug 39, the first magnet 40, the first hall switch 41, the second magnet 42 and the second hall switch 43.

An example is substantially as shown in figures 1 to 31 of the accompanying drawings: the lithium electric fastener driving tool comprises a gun body 10, wherein the working end of the gun body 10 comprises a gun head 11 and a gun barrel assembly 12 connected with the gun head 11; the gun body 10 is internally provided with an air cylinder 131 and an air cylinder seat 13 positioned at the lower end of the air cylinder 131, and the bottom end of the air cylinder seat 13 is connected with the gun head 11; barrel assembly 12 includes a guide rod 14 and a barrel 15.

As shown in fig. 4-11, the bottom end of the cylinder seat 13 is provided with a mounting cavity, a quick-change structure is arranged in the mounting cavity, and the top end of the guide rod 14 is connected with the gun head 11 through the quick-change structure; the quick-change structure has first and second axially disposed working positions between which the tip of the guide bar 14 moves, and during movement the quick-change structure locks the guide bar 14, and when the tip moves to the second working position, the quick-change structure can release the guide bar 14 or clamp the tip. Specifically, the quick-change structure includes a quick-change inner slider 16 and a quick-change outer slider 17 sleeved on the quick-change inner slider 16, the quick-change inner slider 16 is provided with a connecting groove, the top end of the guide rod 14 can extend into the connecting groove, and the quick-change outer slider 17 enables the quick-change inner slider 16 to lock or unlock the guide rod 14 when sliding along the axial direction of the quick-change inner slider 16; the top end of the guide rod 14 is provided with an inner groove 18, a through hole is penetrated through the side wall of the quick-change inner sliding block 16, a locking piece 19 is arranged in the through hole, and the locking piece 19 is extruded into the quick-change inner sliding block 16 when the quick-change outer sliding block 17 axially slides along the quick-change inner sliding block; further, the inner groove 18 is an arc groove, the locking member 19 is a spherical member matching the arc groove, and the spherical member is a steel ball.

The quick change structure is also provided with an anti-drop component for preventing the quick change outer sliding sleeve 17 from dropping, the anti-drop component comprises a limiting groove 20 arranged on the quick change outer sliding sleeve 17 and a limiting piece 21 arranged on the quick change inner sliding sleeve 16, the limiting groove 20 is axially formed along the quick change outer sliding sleeve 17, the limiting piece 21 is radially arranged along the quick change inner sliding sleeve 16, the end part of the limiting piece 21 stretches into the limiting groove 20, and the limiting piece 21 adopts an elastic cylindrical pin.

As shown in fig. 12-23, the lithium-ion fastener driving tool further includes a depth adjusting structure for adjusting the nailing depth, wherein the depth adjusting structure is located in the mounting cavity and connected with the upper end of the quick-change outer sliding sleeve 17, and the upper end of the quick-change outer sliding sleeve 17 can axially move along the depth adjusting structure. Specifically, the depth adjusting structure comprises an adjusting limiting block 22, the adjusting limiting block 22 is provided with an adjusting groove 23 extending inwards in the axial direction, the upper end of the quick-change outer sliding sleeve 17 stretches into the adjusting groove 23, the quick-change outer sliding sleeve 17 axially slides along the adjusting groove 23 after rotating, a nut 24 limited to rotate is arranged in the adjusting groove 23, and the upper end of the quick-change outer sliding sleeve 17 is a screw matched with the nut 24 and stretches into the nut 24. The upper end of the screw rod is provided with a drop-preventing piece 25 for preventing the screw rod from dropping from the nut 24, the drop-preventing piece 25 is a cylindrical pin 28 penetrating through the upper end of the screw rod in the radial direction, and the length of the cylindrical pin 28 is larger than the inner diameter of the nut 24, so that in the sliding process of the quick-change outer sliding sleeve 17, the cylindrical pin 28 is longer than the inner diameter of the nut 24, and when the cylindrical pin 28 moves to be propped against the nut 24, the quick-change outer sliding sleeve 17 cannot be continuously moved downwards, so that the drop-preventing effect is achieved. The side wall of the adjusting stopper 22 is penetrated with a fastening screw 241 which restricts the rotation of the nut 24.

As shown in fig. 24-25, a nailing firing pin 26 is arranged in a cylinder 131, a fluted disc 27 is arranged on one side of the firing pin 26, and cylindrical pins 28 which are in one-to-one correspondence with tooth grooves of the firing pin 26 are arranged on the fluted disc 27; also included is an anti-impact detent structure that prevents the striker 26 from falling when the tooth slot does not correspond to the cylindrical pin 28. Specifically, the anti-impact pawl structure comprises a pawl 29 arranged on the cylinder seat 13 and a limit stop 30 arranged on one side of the firing pin 26, which faces the pawl 29, wherein one end of the pawl 29 is hinged with the cylinder seat 13 through a connecting pin, a return piece 31 is arranged between the cylinder seat 13 and the pawl 29, and the return piece 31 adopts a spring; during the falling process of the firing pin 26, when the cylindrical pins 28 of the fluted disc 27 can enter the tooth grooves in a one-to-one correspondence manner, the pawls 29 can slide over the limit stop blocks 30, and when the cylindrical pins 28 and the tooth grooves are misplaced, the pawls 29 prop against the limit stop blocks 30; further, the anti-impact pawl structure further comprises a protrusion 32 arranged on the fluted disc 27, and when the last cylindrical pin 28 leaves the last tooth slot in the rotation process of the fluted disc 27, the protrusion 32 contacts with the pawl 29 and pulls out the pawl 29, and the limit stop 30 is staggered with the pawl 29; when the protrusion 32 is out of contact with the pawl 29, the return member 31 pushes the pawl 29 against the toothed disc 27; when the cylindrical pin 28 and the tooth slot are misplaced, the pawl 29 abuts against the limit stop 30 after the striker 26 falls down until the boss 32 contacts the pawl 29 and pulls out the pawl 29, and the striker 26 continues to fall down.

As shown in fig. 26 and 27, the gun body 10 further includes a gas storage tank 33 sleeved on the cylinder 131, and the cylinder 131 is eccentrically disposed in the gas storage tank 33 and communicates with a gas storage area in the gas storage tank 33.

As shown in fig. 28-30, the gun body 10 is provided with a detachable clip assembly 34, the rear end of the clip assembly 34 is provided with a clip assembly tail cover 35, the holding end of the gun body 10 is provided with a chute, the clip assembly tail cover 35 is provided with a buckle 36 which can enter the chute, the chute is provided with a positioning handle 37 which can be opened and closed, one end of the positioning handle 37 is provided with a pressure spring, the positioning handle 37 is opened by being stressed, and the release is carried out by the pressure spring. Specifically, the working end of the gun body 10 is provided with a rear nail head 38, a limit groove is arranged at the rear nail head 38, and the front end of the cartridge clip assembly 34 can slide into the limit groove.

The cartridge clip assembly 34 is slidably connected with a plug 39, a first trigger component capable of triggering the driving tool to stop working is mounted on the plug 39, specifically, the first trigger component comprises a first magnet 40 and a first Hall switch 41, the first magnet 40 is mounted on the plug 39, the first Hall switch 41 is arranged on one side of the cylinder seat 13, which faces the holding end of the gun body 10, and the first magnet 40 moves to a position corresponding to the first Hall switch 41, and the first Hall switch 41 triggers the driving tool to stop working.

As shown in fig. 31, the striker 26 is provided with a second trigger assembly for triggering the driving tool to stop working, specifically, the second trigger assembly includes a second magnet 42 provided at the upper end of the striker 26 and a second hall switch 43 provided on the cylinder block 13, and in a period in which the striker 26 falls from the highest position to the lowest point and rises, the second trigger assembly is not started when the second magnet 42 passes through the second hall switch 43 twice, and the second trigger assembly triggers the driving tool to stop working when the second magnet 42 does not pass through or passes through the second hall switch 43 once.

The specific implementation process is as follows: in the initial state, the gun barrel assembly 12 is connected with the gun head 11, the quick-change outer sliding sleeve 17 and the quick-change inner sliding sleeve 16 are in a closed state, and the spherical part is limited by the quick-change outer sliding sleeve 17 and a part of the spherical part enters the through hole and locks the guide rod 14; when the gun barrel assembly 12 needs to be disassembled, the gun barrel assembly 12 is pulled downwards, the quick-change sliding block 16 slides downwards, the quick-change structure is changed from a closed state to an open state, the spherical part is exposed, then the gun barrel assembly 12 and the quick-change sliding block 16 are pulled downwards, the spherical part moves outwards under the extrusion action of the inner groove 18, and the guide rod 14 continues to move downwards, so that the quick-change sliding block 16 slides out; when the gun barrel assembly 12 is installed, the guide rod 14 stretches into the quick-change inner sliding block 16, then the guide rod 14 is pushed upwards, the spherical part moves outwards after being subjected to external force, the guide rod 14 continues to move upwards, when the inner groove 18 of the guide rod 14 moves to the position of the spherical part, the quick-change outer sliding sleeve 17 is loosened, the quick-change outer sliding sleeve 17 slides downwards under the action of the first return piece 31, the spherical part is extruded, the spherical part enters into the inner groove 18, and accordingly the guide rod 14 is locked, and the quick-change of the gun barrel assembly 12 is realized.

When the nailing depth needs to be adjusted, the quick-change outer sliding sleeve 17 is axially rotated, and under the cooperation with the nut 24, the quick-change outer sliding sleeve 17 can move upwards or downwards, so that the nailing depth is adjusted.

When the tool is normally operated, each cylindrical pin 28 in the fluted disc 27 corresponds to the tooth groove of the firing pin 26 one by one and can enter the tooth groove, when the fluted disc 27 is operated until the last cylindrical pin 28 is separated from the last tooth groove, the firing pin 26 reaches the highest point, the firing pin 26 moves downwards at the next moment, meanwhile, the bulge 32 on the fluted disc 27 passes through the pawl 29 to push the pawl 29 away, and the limit stop 30 on the firing pin 26 can normally fall.

When the tool is abnormal in operation, the cylindrical pin 28 of the fluted disc 27 is misplaced with the tooth groove of the firing pin 26, so when the firing pin 26 rises to the highest point, the bulge 32 of the fluted disc 27 does not rotate to a designated position due to misplacement, the pawl 29 is not pushed away, so after the firing pin 26 falls down, the pawl 29 abuts against the limit stop 30 arranged at the lower end of the firing pin 26 to prevent the firing pin 26 from falling down, but due to the fact that the gear can still rotate continuously, when the fluted disc 27 protrudes past the pawl 29, the pawl 29 can be pushed away, the firing pin 26 can fall normally, and the cylindrical pin 28 entering the fluted disc 27 can enter the tooth groove in a one-to-one correspondence mode. In the above process, the pin 28 which is not normally inserted into the tooth slot of the striker 26 is lifted by the fluted disc 27, and if the pawl 29 is not provided, the striker 26 falls down to collide with the lifted pin 28, so that the service life is reduced, and the latch is also possible.

In the nailing process, as the number of the remaining nails in the cartridge assembly 34 decreases, the nail head moves along with and gradually approaches the first hall switch 41, and after the first magnet 40 on the nail head moves to a position corresponding to the first hall switch 41, the first hall switch 41 triggers the driving tool to stop working, and in the embodiment, the driving tool is triggered to stop when three nails remain in the cartridge assembly 34.

In normal use of the tool, the striker 26 falls from the highest point to the lowest point and rises back (resets to the highest point) for one cycle. During a cycle, the second magnet 42 passes the second hall switch 43 once and then the striker 26 rises again from the lowest position, so that the striker 26 passes the second magnet 42 again, and thus the second magnet 42 passes the hall switch twice during a normal operating cycle. When the driving tool is abnormal, such as the striker 26 does not normally operate to the lowest position, or is blocked near the lowest position due to the condition of a clamp or the like, the second magnet 42 does not pass through or only passes through the second hall switch 43 once, and the second triggering component triggers the driving tool to stop operating.

The foregoing is merely an embodiment of the present utility model, and a specific structure and characteristics of common knowledge in the art, which are well known in the scheme, are not described herein, so that a person of ordinary skill in the art knows all the prior art in the application day or before the priority date of the present utility model, and can know all the prior art in the field, and have the capability of applying the conventional experimental means before the date, so that a person of ordinary skill in the art can complete and implement the present embodiment in combination with his own capability in the light of the present application, and some typical known structures or known methods should not be an obstacle for a person of ordinary skill in the art to implement the present application. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present utility model, and these should also be considered as the scope of the present utility model, which does not affect the effect of the implementation of the present utility model and the utility of the patent. The protection scope of the present application shall be subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.

Claims (14)

1. The lithium electric fastener driving tool comprises a gun body, wherein the working end of the gun body comprises a gun head and a gun barrel assembly connected with the gun head; the gun body is internally provided with an air cylinder and an air cylinder seat positioned at the lower end of the air cylinder, and the bottom end of the air cylinder seat is connected with the gun head; the gun barrel assembly comprises a guide rod and a gun barrel; the method is characterized in that: the installation cavity is formed in the bottom end of the cylinder seat, a quick-change structure is arranged in the installation cavity, the top end of the guide rod is connected with the gun head through the quick-change structure, and the quick-change structure can be loosened or clamped to the guide rod.

2. The lithium-ion fastener-driving tool of claim 1, wherein: the quick-change structure comprises a quick-change inner slide and a quick-change outer slide sleeve sleeved on the quick-change inner slide, the guide rod is connected with the quick-change inner slide, and the quick-change outer slide sleeve enables the quick-change inner slide to be locked or unlocked when axially sliding along the quick-change inner slide.

3. The lithium-ion fastener-driving tool of claim 2, wherein: the top end of the guide rod is provided with an inner groove, a through hole is formed in the side wall of the quick-change inner sliding block in a penetrating mode, a locking piece is arranged in the through hole, and when the quick-change outer sliding sleeve axially slides along the quick-change inner sliding block, the locking piece is extruded to enter the quick-change inner sliding block and lock the guide rod; the inner groove is an arc groove, and the locking piece is a spherical piece matched with the arc groove.

4. A lithium-ion fastener-driving tool as defined in claim 3, wherein: the quick-change structure is also provided with an anti-falling component for preventing the quick-change outer sliding sleeve from falling off, the anti-falling component comprises a limiting groove arranged on the quick-change outer sliding sleeve and a limiting piece arranged on the quick-change inner sliding sleeve, the limiting groove is axially formed in the quick-change outer sliding sleeve, the limiting piece is radially arranged in the quick-change inner sliding sleeve, and the end part of the limiting piece stretches into the limiting groove.

5. The lithium-ion fastener-driving tool of any of claims 2-4, wherein: the quick-change outer sliding sleeve is arranged in the mounting cavity, and is connected with the upper end of the quick-change outer sliding sleeve; the depth adjusting structure comprises an adjusting limiting block, the adjusting limiting block is provided with an adjusting groove extending inwards in the axial direction, the upper end of the quick-change outer sliding sleeve stretches into the adjusting groove, and the quick-change outer sliding sleeve slides along the axial direction of the adjusting groove after rotating; the nut which is limited to rotate is arranged in the adjusting groove, and the upper end of the quick-change outer sliding sleeve is a screw rod matched with the nut and extends into the nut; the upper end of the screw rod is provided with an anti-falling part for preventing the screw rod from falling off from the nut.

6. The lithium-ion fastener-driving tool of claim 5, wherein: a nailing firing pin is arranged in the cylinder, a fluted disc is arranged on one side of the firing pin, and cylindrical pins which are in one-to-one correspondence with tooth grooves of the firing pin are arranged on the fluted disc; the anti-impact pawl structure is used for preventing the firing pin from falling when the tooth slot is not corresponding to the cylindrical pin.

7. The lithium-ion fastener-driving tool of claim 6, wherein: the anti-impact pawl structure comprises a pawl arranged on the cylinder seat and a limit stop arranged on one side of the firing pin, which faces the pawl, one end of the pawl is hinged with the cylinder seat through a connecting pin, and a return piece is arranged between the cylinder seat and the pawl; when cylindrical pins of the fluted disc can enter the tooth grooves in a one-to-one correspondence mode, the pawls can slide through the limit stop, and when the cylindrical pins are staggered with the tooth grooves, the pawls prop against the limit stop.

8. The lithium-ion fastener-driving tool of claim 7, wherein: the anti-impact pawl structure further comprises a protrusion arranged on the fluted disc, wherein in the fluted disc rotation process, when the last cylindrical pin leaves the last tooth slot, the protrusion is contacted with the pawl and pulls out the pawl, and the limit stop is staggered with the pawl; the return member urges the pawl against the striker when the projection is out of contact with the pawl; when the cylindrical pin and the tooth slot are dislocated, the pawl abuts against the limit stop after the striker drops until the protrusion contacts with the pawl and pulls out the pawl, and the striker continues to drop.

9. The lithium-ion fastener-driving tool of claim 8, wherein: the gun body further comprises an air storage tank sleeved on the air cylinder, and the air cylinder is eccentrically arranged in the air storage tank and is communicated with an air storage area in the air storage tank.

10. The lithium-ion fastener-driving tool of claim 9, wherein: the gun body is provided with a detachable cartridge clip assembly, the rear end of the cartridge clip assembly is provided with a cartridge clip assembly tail cover, the holding end of the gun body is provided with a sliding groove, and the cartridge clip assembly tail cover is provided with a buckle capable of entering the sliding groove; the sliding chute is provided with a positioning handle which can be opened and closed, one end of the positioning handle is provided with a pressure spring, the positioning handle is opened by stress, and the positioning handle is reset by the pressure spring after being released; the front end of the cartridge clip assembly can slide into the limiting groove.

11. The lithium-ion fastener-driving tool of claim 10, wherein: the cartridge clip assembly is connected with a plug in a sliding manner, and a first trigger assembly capable of triggering the driving tool to stop working is arranged on the plug.

12. The lithium-ion fastener-driving tool of claim 11, wherein: the first trigger assembly comprises a first magnet and a first Hall switch, the first magnet is installed on the top, the first Hall switch is arranged on one side of the cylinder seat, which faces the holding end of the gun body, the first magnet moves to a position corresponding to the first Hall switch, and the first Hall switch triggers the driving tool to stop working.

13. The lithium-ion fastener-driving tool of claim 12, wherein: the firing pin is provided with a second trigger component which can trigger the driving tool to stop working.

14. The lithium-ion fastener-driving tool of claim 13, wherein: the second trigger component comprises a second magnet arranged at the upper end of the firing pin and a second Hall switch arranged on the cylinder seat, and in a period that the firing pin falls to the lowest point from the highest position and rises back, when the second magnet passes through the second Hall switch twice, the second trigger component is not started, and when the second magnet does not pass through or passes through the second Hall switch once, the second trigger component triggers the driving tool to stop working.

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