CN111791187A

CN111791187A - Nail gun

Info

Publication number: CN111791187A
Application number: CN202010184458.2A
Authority: CN
Inventors: 郝敬冬; 付祥青
Original assignee: Nanjing Deshuo Industrial Co Ltd
Current assignee: Nanjing Deshuo Industrial Co Ltd
Priority date: 2019-04-04
Filing date: 2020-03-16
Publication date: 2020-10-20
Anticipated expiration: 2040-03-16
Also published as: CN111791187B

Abstract

The invention discloses a nail gun, comprising: a housing formed with an accommodating space; a power output part arranged in the accommodating space; a cylinder connected to the housing and storing gas; a firing assembly for driving staples and disposed at least partially within the cylinder; the power output portion includes: a motor for outputting power; the clutch assembly is used for switching the initial position and the release position of the firing assembly; when the firing assembly moves from the initial position to the release position, the clutch assembly transmits the power of the motor to the firing assembly; when the firing assembly moves from the release position to the firing position, the clutch assembly does not transmit the power of the motor to the firing assembly; when the firing assembly moves from the firing position to the initial position, the clutch assembly transmits the power of the motor to the firing assembly. The nail gun has compact structure and high nailing efficiency.

Description

Nail gun

Technical Field

The present invention relates to a nail gun.

Background

The nail gun is used as a nailing tool, and the principle mode of the existing nail gun products on the market can be divided into two mechanical types and a cylinder type, wherein the mechanical type can be divided into structures such as a spring type, a flywheel type, a friction wheel type and the like according to the energy storage mode; the cylinder type nail gun can be divided into a single cylinder or a double-cylinder structure according to the number of cylinders, and can be divided into positive pressure energy storage or negative pressure energy storage according to an energy storage mode. In the prior art, the cylinder type nail gun has a complex structure and a large volume, and is inconvenient for user operation. How to provide a cylinder type nail gun with compact combination and high reliability is a technical problem to be solved urgently at present.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention aims to provide a nail gun which is compact in structure and high in reliability.

In order to achieve the above object, the present invention adopts the following technical solutions:

a nail gun, comprising: a housing formed with an accommodating space; a power output part arranged in the accommodating space; a cylinder connected to the housing and storing gas; a firing assembly for driving staples and disposed at least partially within the cylinder; the power output portion includes: a motor for outputting power; the clutch assembly is used for switching the initial position and the release position of the firing assembly; when the firing assembly moves from the initial position to the release position, the clutch assembly transmits the power of the motor to the firing assembly; when the firing assembly moves from the release position to the firing position, the clutch assembly does not transmit the power of the motor to the firing assembly; when the firing assembly moves from the firing position to the initial position, the clutch assembly transmits the power of the motor to the firing assembly.

Furthermore, the cylinder also comprises an inflating nozzle for inflating, and the cylinder is pre-filled with gas through the inflating nozzle and drives the firing assembly to compress the gas in the cylinder under the driving of the power output part; the firing assembly comprises an initial position and a release position; when the triggering assembly is at the initial position, the pre-filled gas and the triggering assembly are mutually extruded; when the firing assembly is in the release position, the pre-charged gas can extrude the firing assembly to the firing position.

Further, the power output part also comprises a driving wheel component for driving the firing component to move, and the driving wheel component can transmit the power of the clutch component to the firing component.

Furthermore, the clutch assembly comprises a clutch piece and an output piece, the output piece is fixedly connected with the driving wheel assembly, and when the clutch piece is matched with the output piece, the clutch piece can transmit power to the driving wheel assembly; when the clutch is disengaged from the output, the clutch does not transmit power to the drive wheel assembly.

Furthermore, the power output part also comprises a clutch retainer matched with the clutch piece, and the clutch retainer comprises a circular ring surface and a gap matched with the clutch piece; the clutch member further includes a boss; when the bulge part is positioned on the circular surface, the clutch part is matched with the output part; when the boss is located in the notch, the clutch member is away from the output member.

Further, the clutch includes a first drive tooth that drives the output member, which includes a second drive tooth that engages the first drive tooth.

Further, the firing assembly comprises: a striker for striking a nail; the piston is fixedly connected to the firing pin and positioned in the cylinder, and gas in the cylinder can push the piston to drive the firing assembly; and a buffer member connected to an outlet of the cylinder.

Further, the locking device for locking the firing assembly to be kept at the initial position is further included.

Further, the locking device includes: a backstop for locking the striker; and the trigger rod is connected with the backstop through the connecting rod and forms a linkage relation with the backstop.

Further, the cylinder is disposed perpendicular to the power output portion.

The invention has the advantages that: through setting up the different positions of percussion subassembly for the compact structure of nail rifle, the reliability is high.

Drawings

FIG. 1 is a perspective view of a nail gun;

FIG. 2 is a plan view of the nail gun of FIG. 1;

FIG. 3 is a perspective view of the power take off and cylinder of the nail gun of FIG. 1;

FIG. 4 is a perspective view of another perspective of the power take off and cylinder of the nail gun of FIG. 3;

FIG. 5 is an exploded view of the power take off of the nail gun of FIG. 2;

FIG. 6 is an exploded view from another perspective of the power take off of the nail gun of FIG. 5;

FIG. 7 is a perspective view of a clutch retainer of the nail gun of FIG. 6;

FIG. 8 is an exploded schematic view of the clutch assembly of the nail gun of FIG. 6;

FIG. 9 is an exploded schematic view from another perspective of the clutch assembly of the nail gun of FIG. 8;

FIG. 10 is an exploded schematic view of the cylinder and firing assembly of the staple gun of FIG. 2;

FIG. 11 is an enlarged fragmentary view of the nail gun of FIG. 10 at A;

FIG. 12 is a perspective view of the boss of the clutch of the nail gun of FIG. 2 in a first position;

FIG. 13 is a perspective view of another perspective of the boss of the clutch of the nail gun of FIG. 12 in the first position;

FIG. 14 is a perspective view of the boss of the clutch of the nail gun of FIG. 2 in a second position;

FIG. 15 is a perspective view of another perspective of the boss of the clutch of the nail gun of FIG. 14 in a second position;

fig. 16 is a perspective view of the nailer of fig. 15 with the clutch assembly reengaged.

Detailed Description

The nail gun 100 shown in fig. 1 to 2 includes: a housing 11, a power take-off 12, a cylinder 13 and a cartridge assembly 14. The housing 11 forms an accommodating space extending in the direction of the first straight line 101, and the power output unit 12 is disposed in the accommodating space. The housing 11 is also formed with a grip portion 111 that can be gripped by a user. One end of the handle portion 111 is connected to a power interface for accessing a dc or ac power source. The handle portion 111 is provided with a main switch 112, and the user controls the on/off of the nail gun 100 through the main switch 112. In the present embodiment, the battery pack 113 is connected to the power source interface. The other end of the handle part 111 is connected with the air cylinder 13, the air cylinder 13 extends along the direction of the second straight line 102, and the direction of the first straight line 101 is perpendicular to the direction of the second straight line 102. The clip assembly 14 is disposed in a third line 103 parallel to the first line 101. The cylinder 13 is provided with a firing assembly 15, and the firing assembly 15 is pushed to move to drive nails by applying work through the gas in the cylinder 13. In this embodiment, the cylinder 13 further includes an inflating valve 131 for pre-charging air into the cylinder 13, the power output portion 12 drives the firing assembly 15 to compress the air to move from the initial position to the releasing position, at this time, the air performs work, and under the action of the pre-charged air, the firing assembly 15 is continuously pushed to have an acceleration, so that the firing assembly 15 can drive out the nail with a larger momentum, and after the nail is driven out, the nail is rapidly moved from the releasing position to the initial position, thereby completing a nailing cycle.

As shown in fig. 3 to 6, the power output portion 12 includes, distributed in the direction of the first straight line 101: motor 121, gear box 122, clutch holder 123, clutch assembly 124 and drive wheel assembly 125. Wherein, the motor 121 outputs power and drives the driving shaft 126 to rotate through the gear box 122. The clutch holder 123 is fixed in the gear housing 122 and is formed with a first through hole through which the driving shaft 126 passes, and the clutch holder 123 does not rotate with the driving shaft 126. Clutch assembly 124 includes a clutch 124a and an output 124 j. The clutch 124a is formed with a second through hole 124b through which the drive shaft 126 passes. In this embodiment, an outer transmission structure 126a is formed or connected to the driving shaft 126, and an inner transmission structure 124c is formed or connected to the second through hole 124b, so that the clutch member 124a can rotate synchronously with the driving shaft 126 and can move along the axial direction of the driving shaft 126 by the engagement of the outer transmission structure 126a and the inner transmission structure 124 c.

As shown in fig. 7-9, the clutch 124a is formed with a first drive dog 124i that is engageable with a second drive dog 124k formed on the output member 124j to drive the output member 124j for rotation. Output member 124j is fixedly connected to drive wheel assembly 125, i.e., clutch member 124a can rotate drive wheel assembly 125 via output member 124 j. The drive wheel assembly 125 has third gear teeth 125a formed or attached thereto, and the third gear teeth 125a are configured to drive the firing assembly 15 in the direction of the second line 102.

In this embodiment, the staple gun 100 further includes a lockout device 16 for locking out the firing assembly 15. A locking device 16 is provided between the clutch holder 123 and the drive wheel assembly 125, which locks the firing assembly 15 by means of a pawl, so that it remains in the initial position under the pressure of the pre-charge gas in the cylinder 13. The locking device 16 comprises in particular: backstop 161, link 162 and trigger lever 163. The ratchets 161 are in an interlocking relationship with the trigger lever 163 through the link 162, and have a predetermined elastic force under the action of the torsion spring 164 provided on the link 162, so that the trigger lever 163 can be always closely adhered to the clutch 124 a.

As shown in fig. 7 to 9, the clutch holder 123 includes a circular ring surface 123a extending around the first straight line 101, the circular ring surface 123a is continuous and smooth, and a notch 123b is provided at a predetermined position, the notch 123b includes a first position 123c and a second position 123d, wherein the first position 123c is substantially parallel to a plane where the circular ring surface 123a is located, the second position 123d intersects with the plane where the circular ring surface 123a is located, and the second position 123d may be a circular arc surface. The clutch holder 123 also forms or is attached with a projection that is fixed to the gear case 122.

As shown in fig. 8 to 9, the clutch member 124a extends along the first line 101 and includes a first clutch portion 124d, a second clutch portion 124f, and a third clutch portion 124 h. The first engaging and disengaging portion 124d is a cylinder extending around the first straight line 101, and a protrusion 124e is formed or connected to a surface close to the engaging and disengaging holder 123, and the surface of the protrusion 124e is smooth and continuous, preferably, the surface of the protrusion 124e may be arc-shaped. The boss 124e can slide on the circular ring surface 123a of the clutch holder 123. The second clutch portion 124f is a cylinder extending around the first straight line 101, and has a radius smaller than that of the first clutch portion 124d, and a stop portion 124g is formed on a side surface of the cylinder and extends at a predetermined position, and the stop portion 124g cooperates with the locking device 16 to unlock the firing assembly 15. In fact, when stop 124g moves into contact with trigger lever 163 of lockout device 16 during rotation of clutch 124a, trigger lever 163 is lifted by stop 124g, thereby moving backstop 161 away from firing assembly 15, at which time firing assembly 15 is unlocked. The third clutch part 124h is a cylinder surrounding the first straight line 101, which is formed with or connected to the first transmission teeth 124i at a side away from the clutch holder 123 and is capable of engaging with the second transmission teeth 124k formed with or connected to the output member 124j, thereby transmitting power from the drive shaft 126 to the output member 124 j. The second gear teeth 124k of the output member 124j are formed at a side close to the clutch holder 123.

As shown in fig. 10-11, the firing assembly 15 includes a firing pin 151, a piston 152, and a cushion 153. The piston 152 is in fixed connection with the striker 151, both of which are movable in the direction of the second line 102 within the cylinder 13. The cushion 153 is sleeved to the striker 151 and mounted to an outlet of the cylinder 13, and more specifically, the cushion 153 is mounted in a receiving groove between the outlet of the cylinder 13 and the housing 11. The cushion 153 functions as a buffer when the striker 151 moves at a high speed to strike a nail. Specifically, the striker 151 is formed with or coupled to a fourth gear tooth 151a, and the third gear tooth 125a formed with or coupled to the drive wheel assembly 125 is engageable with the fourth gear tooth 151a to move the striker 151. As shown in FIGS. 3 and 4, the firing pin 151 further includes a limit groove 151b for limiting, and the limit groove 151b is capable of cooperating with a backstop 161 of the lockout device 16 such that the firing assembly 15 is maintained in the initial position under the force of the pre-charge gas.

Fig. 3 and 4 show a schematic view of the firing assembly 15 of the staple gun 100 in an initial position. At this time, the protrusion 124e of the first clutch portion 124d of the clutch member 124a is located at the beginning position of the circular ring 123a, the stopper 124g of the second clutch portion 124f is far away from the trigger lever 163 of the locking device 16, and the ratchet member 161 is abutted against the limit groove 151b of the striker 151 by the torsion spring 164. At the same time, the first gear 124i of the third clutch part 124h meshes with the second gear 124k of the output element 124 j. When the user starts the nailing gun 100, the motor 121 starts rotating and outputs power. At this time, the clutch member 124a starts to rotate under the driving of the driving shaft 126, the clutch member 124a drives the driving wheel assembly 125 to rotate, the third transmission teeth 125a start to mesh with the fourth transmission teeth 151a, and the fourth transmission teeth 151a receive the acting force of the third transmission teeth 125 a. At the same time, the force of the ratchets 161 acting on the striker 151 is transferred between the third gear teeth 125a and the fourth gear teeth 151 a.

As shown in fig. 12 to 13, the clutch 124a is driven by the driving shaft 126 to rotate continuously, the stopping portion 124g starts to approach and contact the trigger rod 163, the trigger rod 163 drives the backstop 161 to disengage from the striker 151, the firing assembly 15 is unlocked, the third transmission teeth 125a start to drive the fourth transmission teeth 151a, and the firing assembly 15 starts to compress the gas in the cylinder 13 until the firing position is reached. In fact, the firing assembly 15 goes through two phases from the initial position to the fired position, namely an unlocked phase and an energy charging phase. The clutch member 124a continues to rotate under the driving of the driving shaft 126, the protrusion 124e of the first clutch portion 124d falls from the circular ring surface 123a to the first position 123c of the notch 123b, the clutch member 124a is ejected by the elastic member disposed between the clutch member 124a and the output member 124j, and the first transmission tooth 124i of the clutch member 124a is disengaged from the second transmission tooth 124k of the output member 124j, and the two transmission teeth no longer have a transmission relationship. At this time, the driving wheel assembly 125 no longer has power input, the firing assembly 15 cannot continue to store energy, the firing assembly 15 only receives the action of the compressed gas in the cylinder 13 without external force, the compressed gas rapidly works, and under the synchronous action of the pre-charged gas, the firing assembly 15 is continuously accelerated and rapidly moves along the second straight line 102, so that the nail is driven out. It will be appreciated that when the drive wheel assembly 125 is energized to drive the firing assembly 15, the drive wheel moves in a first direction, and when the drive wheel assembly 125 is not driven by the drive wheel, the drive wheel assembly 125 is free to be driven by the firing assembly 15 and rotate in a second direction. During the firing of the firing assembly 15, the locking device 16 is always in the unlocked state. In addition, the driving wheel assembly 125 eventually stays at a predetermined position when rotating in the second direction.

As shown in fig. 14 to 16, the clutch member 124a continues to rotate under the driving of the driving wheel, and at this time, the protrusion 124e moves to the second position 123d of the notch 123b of the clutch holder 123, the clutch starts to move by being pushed by the arc surface of the second position 123d of the notch 123b toward a position away from the clutch holder 123, and the first transmission tooth 124i includes a combined motion of moving in the direction of the first straight line 101 and moving around the direction of the first straight line 101. Before the first transmission tooth 124i is engaged with the second transmission tooth 124k, the first transmission tooth 124i has moved to the position of the second transmission tooth 124k along the first line 101, the clutch 124a continues to rotate until the first transmission tooth 124i is engaged with the second transmission tooth 124k, the clutch 124a drives the output member 124j to move again, and the driving wheel assembly 125 drives the firing assembly 15 to compress the gas again and move from the firing position to the initial position. In this process, the locking device 16 is a pawl structure, and does not restrict the movement of the striker 151, and when the striker 151 is driven to a predetermined position, the stop sensor provided in the vicinity of the driving assembly senses the magnet embedded in the clutch, and the power output part 12 stops moving. This is one nailing cycle.

It can be understood that the head of the single cylinder 13 is provided with the air storage cavity and the charging connector 131, the air storage cavity is designed to be of a structure with adjustable volume, and the volume of the air storage cavity can be adjusted by adjusting a knob at the head; when the volume of the air storage cavity is increased, the pressure in the air cylinder 13 is reduced, the pressure acting on the piston 152 is reduced, and the hitting force is reduced; in this way, the striking force can be adjusted, so that a suitable striking force can be selected for different working conditions, and the working efficiency of the nail gun 100 is improved.

In fact, the clutch between the clutch and the output member 124j can also be arranged in a radial direction around the first straight line 101, which can also achieve the clutch effect, and will not be described in detail herein.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by using equivalent alternatives or equivalent variations fall within the scope of the present invention.

Claims

1. A nail gun, comprising:

a housing formed with an accommodating space;

a power output part arranged in the accommodating space;

a cylinder connected to the housing for storing gas;

a firing assembly for driving staples and disposed at least partially within said cylinder;

it is characterized in that the preparation method is characterized in that,

the power output portion includes:

a motor for outputting power;

a clutch assembly for switching the initial position and the release position of the firing assembly;

when the firing assembly moves from the initial position to the release position, the clutch assembly transmits the power of the motor to the firing assembly; when the firing assembly moves from the release position to the firing position, the clutch assembly does not transmit the power of the motor to the firing assembly; when the firing assembly moves from the firing position to the initial position, the clutch assembly transmits the power of the motor to the firing assembly.

2. The nail gun of claim 1,

the cylinder also comprises an inflating nozzle for inflating, and the cylinder is pre-charged with gas through the inflating nozzle and drives the firing assembly to compress the gas in the cylinder under the driving of the power output part;

the firing assembly comprises an initial position and a release position; when the firing assembly is at the initial position, the pre-charging gas and the firing assembly are mutually extruded; when the firing assembly is in the release position, the pre-charge gas can press the firing assembly to a firing position.

3. The nail gun of claim 1,

the power output part also comprises a driving wheel assembly used for driving the firing assembly to move, and the driving wheel assembly can transmit the power of the clutch assembly to the firing assembly.

4. The nail gun of claim 3,

the clutch assembly comprises a clutch piece and an output piece, the output piece is fixedly connected with the driving wheel assembly, and when the clutch piece is matched with the output piece, the clutch piece can transmit power to the driving wheel assembly; when the clutch is disengaged from the output, the clutch does not transmit power to the drive wheel assembly.

5. The nail gun of claim 4,

the power output part also comprises a clutch retainer matched with the clutch piece, and the clutch retainer comprises a circular ring surface and a gap matched with the clutch piece;

the clutch member further includes a boss; when the boss is positioned on the circular ring surface, the clutch piece is matched with the output piece; when the boss is located in the notch, the clutch member is away from the output member.

6. The nail gun of claim 4,

the clutch includes a first drive tooth that drives the output member, which includes a second drive tooth that engages the first drive tooth.

7. The nail gun of claim 1,

the firing assembly comprises:

a striker for striking a nail;

the piston is fixedly connected to the firing pin and positioned in the cylinder, and gas in the cylinder can push the piston to drive the firing assembly;

a buffer connected to an outlet of the cylinder.

8. The nail gun of claim 1,

the firing assembly further comprises a locking device for locking the firing assembly to be kept at the initial position.

9. The nail gun of claim 8,

the locking device includes:

a backstop for locking the striker;

and the trigger rod is connected with the backstop through a connecting rod and forms a linkage relation with the backstop.

10. The nail gun of claim 1,

the cylinder is perpendicular to the power output portion.