CN214055139U - Nail gun - Google Patents

Abstract

The utility model discloses a nail rifle, include: a housing; a power output section; a cylinder; a cartridge clip assembly; a firing assembly; the power output part comprises a gearbox and a non-return component, the non-return component is arranged in the gearbox, and when the power output part drives the firing component to rotate to an initial position along a first rotating direction, the non-return component stops the firing component to rotate to a firing position along a second rotating direction; backstop subassembly includes: a retaining ring fixedly connected to the housing; the planet carrier is arranged in the retaining ring and can freely rotate relative to the retaining ring; a lock pin connected to the carrier via a first elastic member and restricting the carrier from rotating relative to the retainer ring; the planet carrier comprises a limiting groove, and the limiting groove comprises a first area and a second area; when the locking pin is arranged in the first area, the planet carrier can rotate relative to the retaining ring; when the locking pin is arranged in the second area, the locking pin can lock the rotation of the planet carrier relative to the retaining ring. The nail gun has compact structure and high nailing efficiency.

Description

Nail gun

Technical Field

The utility model relates to a nail rifle.

Background

The nail gun is used as a nailing tool, and the principle modes of the existing nail gun products on the market can be divided into a mechanical type 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.

SUMMERY OF THE UTILITY MODEL

For solving the deficiencies of the prior art, an object of the utility model is to provide a nail rifle that the reliability is high.

In order to achieve the above object, the utility model adopts the following technical scheme:

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 cartridge clip assembly for storing nails; a firing assembly for driving staples and disposed at least partially within the cylinder; the power output part comprises a gearbox and a non-return component, the non-return component is arranged in the gearbox, and when the power output part drives the firing component to rotate to an initial position along a first rotating direction, the non-return component can stop the firing component to rotate to a firing position along a second rotating direction; backstop subassembly includes: a retaining ring fixedly connected to the housing; the planet carrier is arranged in the retaining ring and can freely rotate relative to the retaining ring; a lock pin connected to the carrier via a first elastic member and restricting the carrier from rotating relative to the retainer ring; the planet carrier comprises a limiting groove, and the limiting groove comprises a first area and a second area; when the locking pin is arranged in the first area, the planet carrier can rotate relative to the retaining ring; when the locking pin is arranged in the second area, the locking pin can lock the rotation of the planet carrier relative to the retaining ring.

Further, the transmission case includes a plurality of planetary gear assemblies for shifting gears, and the backstop assembly is disposed between the plurality of planetary gear assemblies.

Furthermore, the power output part comprises a driving shaft, and a driving wheel is also arranged on the driving shaft; the firing assembly includes a firing pin having drive teeth that cooperate with the drive wheel.

Further, the driving wheel is embodied as a gear wheel, which comprises a first section provided with driving teeth and a second section provided as a smooth continuous surface.

Further, the drive teeth include a first tooth that comes into contact with the drive tooth first when the drive wheel begins to drive the firing assembly to the initial position, and a second tooth that the firing assembly has been in the initial position and that last engaged with the drive tooth.

Further, the driving wheel includes a receiving groove for receiving the first tooth, and the first tooth is coupled to the receiving groove by a second elastic member.

Further, the receiving groove is formed with a step for restricting the first tooth from escaping, and the first tooth is formed with a projection portion that engages the step.

Further, the power output part also comprises a motor, and the motor is used for driving the power output part to output a driving force so as to drive the firing assembly to move to the initial position.

Further, still include hall response subassembly, hall response subassembly includes: a Hall element disposed on the housing; and the magnetic part is arranged on the insulating part parallel to the driving wheel.

Further, the cartridge assembly further comprises a viewing window.

The utility model discloses an useful part lies in: by arranging an elastic part connected between the locking pin and the planet wheel, the reliability of the nailing gun is higher, and the service life of the nailing gun is longer.

Drawings

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

FIG. 2 is a cross-sectional view of the nail gun of FIG. 1;

FIG. 3 is an internal schematic view of the nail gun of FIG. 1 in an initial position;

FIG. 4 is an internal schematic view of the staple gun of FIG. 1 in a fired position;

FIG. 5 is a cross-sectional view from one perspective of the power take off of the nail gun of FIG. 2;

FIG. 6 is a cross-sectional view from another perspective of the power take off of the nail gun of FIG. 5;

FIG. 7 is an exploded view of the power take off of the nail gun of FIG. 2;

FIG. 8 is an exploded view from another perspective of the power take off of the nail gun of FIG. 7;

FIG. 9 is a plan view of a backstop assembly of the nail gun of FIG. 7;

FIG. 10 is a perspective view of the drive wheel of the nail gun of FIG. 7;

FIG. 11 is a perspective view of a second embodiment of the drive wheel of the nail gun of FIG. 7;

fig. 12 is a partially enlarged view of the nail gun of fig. 11 at a.

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 includes a first accommodating space 111 formed to extend along the first straight line 101 and a second accommodating space 112 formed to extend along the second straight line 102. Wherein the power output portion 12 is disposed in the first accommodation space 111, and the cylinder 13 is disposed in the second accommodation space 112. The housing 11 is also formed with a grip portion 113 that can be gripped by a user. One end of the handle portion 113 is connected to a power interface for accessing a dc power source or an ac power source. The handle portion 113 is provided with a main switch 113a, and the user controls the on/off of the nail gun 100 through the main switch 113 a. In the present embodiment, the battery pack 15 is connected to the power source interface. The other end of the handle portion 113 is connected to the cylinder 13, the cylinder 13 extends along a second straight line 102, and the first straight line 101 and the second straight line 102 are perpendicular to each other. The clip assembly 14 is disposed in a third line 103 parallel to the first line 101. As an alternative embodiment, the cartridge holder assembly 14 is further provided with a window 141 for the user to view the remaining nails. The window 141 is configured as one or more notches in the cartridge clip assembly 14, which allows a user to view the nail allowance, and allows the user to simply repair the cartridge clip assembly 14 without disassembling the cartridge clip assembly 14. The cylinder 13 is provided with a firing assembly 16, and the gas in the cylinder 13 applies work to push the firing assembly 16 to move and drive out the nails. In this embodiment, the cylinder 13 further includes an inflating valve for pre-charging air into the cylinder 13, the power output portion 12 drives the firing assembly 16 to compress the air to move from the initial position to the releasing position, at this time, the air does work, and under the action of the pre-charged air, the firing assembly 16 is continuously pushed to have an acceleration, so that the firing assembly 16 can drive the nail with a larger kinetic energy, and after the nail is driven, the nail is rapidly moved from the releasing position to the initial position, thereby completing a nailing cycle.

As shown in fig. 3-6, the power output 12 extends generally in a first linear direction 101, and the cylinder 13 and the firing assembly 16 disposed within the cylinder 13 extend generally in a second linear direction 102. The power output portion 12 and the cylinder 13 are disposed substantially vertically. Specifically, the power output portion 12 includes: motor 121, gearbox 122, backstop assembly 123, drive shaft 124 and drive wheels 125. Wherein, the motor 121 can output a power to the transmission case 122, and after the speed change of the transmission case 122, continuously output a power to the driving shaft 124, and the driving wheel 125 is disposed on the driving shaft 124. The firing assembly 16 includes a firing pin 161 and a piston (not shown). The piston is fixedly connected to the striker 161, and a transmission gear 161a is formed on the striker 161, and both of them can move in the direction of the second straight line 102 in the cylinder 13. The drive wheel 125 can cooperate with the gear teeth 161a to drive the firing assembly 16 to work against the air pressure in the air cylinder 13, thereby allowing the firing assembly 16 to enter into the firing position. Specifically, motor 121, gearbox 122, backstop assembly 123, drive shaft 124 and drive wheel 125 are all distributed along first straight line 101. A variator is provided in the transmission case 122, and a backstop assembly 123 is provided in the transmission case 122 at one end or in the middle of the variator. In one implementation, backstop assembly 123 enables drive shaft 124 to output only one driving force in a first rotational direction, while restricting rotation of drive shaft 124 in a second rotational direction opposite the first rotational direction.

As shown in fig. 6 to 8, the transmission case 122 includes a first planetary gear assembly 122a, a second planetary gear assembly 122b, and a third planetary gear assembly 122 c. First planetary gear assembly 122a, second planetary gear assembly 122b, and third planetary gear assembly 122c are sequentially arranged along a direction of first straight line 101, and ratchet assembly 123 is disposed between second planetary gear assembly 122b and third planetary gear assembly 122 c. The first planetary gear assembly 122a, the second planetary gear assembly 122b and the third planetary gear assembly 122c are coupled by a coupling pin 122d and can simultaneously rotate about a linear direction parallel to the direction of the first line 101. Wherein, the ratchet assembly 123 includes a sun gear inserted into the third planetary gear assembly 122c and a first connection hole 123d into which the driving shaft 124 is inserted. The first connection hole 123d is provided in the sun gear so as to be rotatable in synchronization with the sun gear. Specifically, backstop assembly 123 further includes a retainer ring 123a, and retainer ring 123a is an annular ring formed around first line 101. The retaining ring 123a further comprises first projections 123b, which are distributed around the outside of the retaining ring 123a and can be inserted into recesses formed in the outer housing 122e of the gearbox 122 so as to be held in a relatively fixed position. A carrier 123c is also provided in the retaining ring 123a, and the sun gear of the third planetary gear assembly 122c is actually provided on the carrier 123 c. Thereby, the main body portion of the carrier 123c is disposed in the retaining ring 123a, and can rotate around the retaining ring 123 a. The sun gear portion of the carrier 123c is provided in the third planetary gear so that the drive shaft 124 connected to the sun gear can rotate in synchronization with the carrier 123 c.

As shown in fig. 9, a certain gap is reserved at the joint of the outer ring of the carrier 123c and the inner ring of the retaining ring 123a, and lubricating oil can enter for lubrication, so that the carrier 123c can reliably rotate relative to the retaining ring 123a without rotation discontinuity or rotation failure caused by friction between the carrier 123c and the retaining ring 123 a. More specifically, a stopper groove 123e is formed at the junction of the carrier 123c and the inner ring of the retainer ring 123 a. Here, the stopper groove 123e is provided on the outer race of the carrier 123c, is not continuous, and is tapered in the first rotational direction. The spacing groove 123e is further provided with spacing pins 123h distributed in a direction parallel to the first straight line 101. The stopper groove 123e includes a first region 123f and a second region 123 g. When the limit pin 123h is located in the first area 123f, the limit pin 123h can move freely in the first area 123f, and the planet carrier 123c can rotate freely relative to the retaining ring 123 a; when the limit pin 123h is located in the second area 123g, the limit pin 123h is clamped between the planet carrier 123c and the retaining ring 123a and cannot move continuously around the second rotation direction, and at this time, the planet carrier 123c and the retaining ring 123a are clamped by the limit pin 123h and cannot complete the relative rotation. It can be understood that the lubricating oil in the gear box has a certain viscosity, and the probability of the lubricating oil sticking to the limit pin 123h is high, so that the limit pin 123h cannot be reset from the second area 123g to the first area 123f, and the driving wheel 125 is easily stuck, thereby causing the nailing gun 100 to fail. In order to enable the limit pin 123h to be reset in time, an elastic member is further provided between the limit pin 123h and the planet carrier 123 c. The first elastic member 123k may be a coil spring, which can pull the stopper pin 123h within a predetermined elastic force range, so that the stopper pin 123h is always located in the first region 123 f. When the gas in the cylinder 13 presses the firing assembly 16 so that the firing assembly 16 has a tendency to rotate in the second rotational direction, the limit pin 123h and the planet carrier 123c move relative to each other, so that the limit pin 123h enters the second area 123g, and at this time, the planet carrier 123c cannot rotate relative to the retaining ring 123a, so that the firing assembly 16 can be retained at the initial position after being locked by the limit pin 123 h.

As shown in fig. 4 and 10, the driving wheel 125 has a gear structure. The driving wheel 125 is further formed with a second coupling hole 125a to which the driving shaft 124 is coupled. The second coupling hole 125a is embodied as a flat hole, and the driving wheel 125 can be rotated in synchronization with the driving shaft 124 when the driving shaft 124 is coupled to the second coupling hole 125 a. A plurality of driving teeth 125g are formed around the main body portion of the driving wheel 125, and the driving teeth 125g include a first tooth 125b provided at a starting end and a second tooth 125d provided at a tip end. Here, the first tooth 125b is defined as the driving tooth 125g that first comes into contact with the striker 161 in the firing assembly 16 when the driving wheel 125 starts to drive the firing assembly 16 to return to the initial position, and the second tooth 125d is defined as the driving tooth 125g that has been located in the initial position of the firing assembly 16 and finally engaged with the striker 161 in the firing assembly 16. First tooth 125b and second tooth 125d include first section 125e and second section 125f therebetween. Wherein, a plurality of driving teeth 125g are uniformly distributed on the first section 125 e; second section 125f is smooth and continuous and has no drive teeth 125g distributed therethrough. When the driving tooth 125g of the first section 125e is engaged with the driving tooth 161a of the striker 161, the driving wheel 125 can drive the striker 161 to compress the gas in the cylinder 13 to do work; when the second section 125f is engaged with the striker 161, since the second section 125f is smooth and continuous, the striker 161 is rapidly pushed out by the gas in the cylinder 13 without the driving teeth 125g stopping, thereby achieving the nailing effect.

It will be appreciated that when the first tooth 125b begins to engage the gear teeth 161a on the striker 161, the first tooth 125b acts as the first drive tooth 125g that engages the gear teeth 161a of the striker 161 and there is a greater interaction force with the gear teeth 161a, since the second section 125f does not have a drive tooth 125g that engages the gear teeth 161a of the device. The first driving tooth 125g and the driving tooth 161a are made of rigid materials, and when the first tooth 125b contacts with the driving tooth 161a and the first tooth 125b crosses over the first driving tooth 161a on the striker 161, the pressing force between the first tooth 125b and the driving tooth 161a causes a large abrasion between the first tooth 125b and the driving tooth 161 a. In the past, the first tooth 125b and the transmission tooth 161a may be damaged by friction with each other, and ultimately affect the service life of the nailing gun 100. As an alternative embodiment, the driving wheel 125 extends a predetermined distance in the direction of the first line 101, so that the driving wheel 125 has a greater thickness in the direction of the first line 101. Thus, the drive wheel 125 is stronger and can withstand higher forces, thereby providing greater resistance to compression and wear of the drive teeth 125g and the drive teeth 161a when pressed against each other. Furthermore, when considering the characteristics of the material itself, we can also locally increase the strength of the first tooth 125b, so that it can adapt to higher strength requirements.

As an alternative embodiment, as shown in FIG. 11, the first teeth 125b may be in the form of movable teeth to relieve the compressive forces of the first teeth 125b when they contact the driving teeth 161 a. Specifically, a receiving groove 126 is formed at the position of the first tooth 125b on the driving wheel 125, and the first tooth 125b is separately provided as a movable member in the receiving groove 126. The receiving groove 126 is provided therein with a second elastic member 126b, and one end of the second elastic member 126b is connected to the receiving groove 126 and the other end is connected to the first tooth 125 b. The driving wheel 125 has a center, and the first tooth 125b is freely movable in the direction of the fourth line 104 in a direction of the fourth line 104 passing through the first tooth 125b and the center. As an alternative embodiment, the receiving groove 126 is formed with a step 126a portion, the first tooth 125b is formed with a second protrusion 125c, and the second protrusion 125c is partially matched with the step 126a, so that the first tooth 125b can be stopped from the fourth straight line 104 to prevent the first tooth 125b from being separated from the receiving groove 126 along the fourth straight line 104. In addition, the second protrusion 125c of the first tooth 125b is always engaged with the step 126a portion of the receiving groove 126 due to the second elastic member 126 b. When the first tooth 125b contacts with the driving tooth 161a of the striker 161 and starts to press, the first tooth 125b overcomes the elastic force of the second elastic member 126b and starts to retreat into the accommodating groove 126, and at this time, the second protrusion 125c is partially separated from the step 126a, and the first tooth 125b can easily cross over the driving tooth 161a, so as to avoid generating a large pressing force between the first tooth 125b and the driving tooth 161a, thereby causing damage to the driving tooth 161a or the first tooth 125 b.

As shown in fig. 5, 7 to 8, the nailing machine 100 further includes a hall sensing assembly 17, and the hall sensing assembly 17 is used for monitoring the position of the driving wheel 125, thereby controlling the nailing machine 100 to stop or report an error, etc. Specifically, the hall sensing assembly 17 includes a hall element 171 and a magnetic member 172. Wherein the hall element 171 is disposed at a predetermined position of the housing, the magnetic member 172 is disposed at an insulating member 173 parallel to the driving wheel 125, and the insulating member 173 is distributed around the magnetic member 172, so that the magnetic member 172 can be prevented from magnetizing the driving teeth 125g to affect the signal reception of the hall element 171. It will be appreciated that the insulator 173 is fixedly coupled to the drive wheel 125 and rotates synchronously with the drive wheel 125. When the driving wheel 125 rotates to a predetermined position, the magnetic member 172 transmits a signal to the hall element 171, the hall element 171 controls the motor 121 to stop, and the nailing gun 100 stops nailing and is ready to enter the next nailing cycle.

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 adopting equivalent replacement or equivalent transformation fall within the protection scope of the present invention.

Claims (10)

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 cartridge clip assembly for storing nails;

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 part comprises a gearbox and a non-return component, the non-return component is arranged in the gearbox, and when the power output part drives the firing component to rotate to an initial position along a first rotating direction, the non-return component can stop the firing component to rotate to a firing position along a second rotating direction;

the backstop assembly includes:

a retaining ring fixedly connected to the housing;

a planet carrier disposed in the retaining ring, the planet carrier being free to rotate relative to the retaining ring;

a lock pin connected to the carrier via a first elastic member and restricting the carrier from rotating relative to the retainer ring;

the planet carrier comprises a limiting groove, and the limiting groove comprises a first area and a second area; when the locking pin is disposed in the first region, the planet carrier is rotatable relative to the retaining ring; when the lock pin is disposed in the second region, the lock pin can lock rotation of the carrier relative to the retainer ring.

2. The nail gun of claim 1,

the transmission case includes a plurality of planetary gear assemblies for shifting gears, and the backstop assembly is disposed between the plurality of planetary gear assemblies.

3. The nail gun of claim 1,

the power output part comprises a driving shaft, and a driving wheel is also arranged on the driving shaft;

the firing assembly comprises a firing pin provided with drive teeth that are engageable with the drive wheel.

4. The nail gun of claim 3,

the driving wheel is a gear, the gear comprises a first section and a second section, the first section is provided with driving teeth, and the second section is provided with a smooth continuous surface.

5. The nail gun of claim 4,

the driving teeth comprise a first tooth which is firstly contacted with the transmission teeth when the driving wheel starts to drive the firing assembly to move to the initial position, and also comprise a second tooth which is arranged at the initial position and is finally meshed with the transmission teeth.

6. The nail gun of claim 5,

the drive wheel includes a receiving slot for receiving the first tooth, the first tooth being coupled to the receiving slot by a second resilient member.

7. The nail gun of claim 6,

the receiving groove is formed with a step for restricting the first tooth from disengaging, and the first tooth is formed with a projection portion that fits the step.

8. The nail gun of claim 1,

the power output part also comprises a motor, and the motor is used for driving the power output part to output a driving force so as to drive the firing assembly to move to the initial position.

9. The nail gun of claim 3,

still include hall response subassembly, hall response subassembly includes:

a Hall element disposed on the housing;

and the magnetic part is arranged on an insulating part parallel to the driving wheel.

10. The nail gun of claim 1,

the cartridge clip assembly also includes a viewing window.

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