CN110370225B - Nailing gun - Google Patents

Abstract

The invention discloses a nailing gun, comprising: a magazine for accommodating nails; a power output section for outputting a striking force to the nail; a first switch, when the first switch is not triggered, the power output part stops outputting the striking force; the nail box comprises a nail pushing plate for pushing nails to move towards the power output part; wherein, the nailing gun still includes: the trigger rod is connected to the nail box and can move to a trigger position for triggering the first switch and a non-trigger position for separating from the first switch relative to the nail box; a stopper having a locking position for restricting the trigger lever to the non-trigger position and an unlocking position for allowing the trigger lever to move to the trigger position; when the nail pushing plate moves to a preset position, the nail pushing plate pushes the limiting piece to limit the trigger rod to a non-trigger position; and when the nail pushing plate is separated from the preset position, the trigger rod can trigger the limiting piece to be separated from the locking position. The air defense knotting mechanism of the nailing gun is simple and has good assemblability.

Description

nail gun

technical field

The invention relates to a power tool, in particular to a nail gun.

Background technique

In order not to waste energy, the existing nail gun products on the market all have an anti-aircraft structure. When there is no nail or a small amount of nails in the nail gun nail box, the mechanism cannot operate normally. At present, the existing air defense structures on the market mainly include mechanical and electronic types. The electronic type senses the signal through the sensor switch or the proximity switch to realize air defense in the program. The sensitive requirements of the sensor switch are relatively high, and it is not easy to control the remaining air defense. The number of nails is not as stable as the mechanical one.

The current anti-airstrike device has a relatively complex structure and low sensitivity, and is prone to jamming or failure of the anti-airstrike function. The complex structure results in high cost of the anti-airstrike structure and subsequent high maintenance costs.

Contents of the invention

In order to solve the deficiencies of the prior art, the object of the present invention is to provide an anti-aircraft nailing gun with simple structure, high assemblability and low cost.

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

A nail gun, comprising: a nail box, used to accommodate nails; a power output part, used to output striking force to the nail; a first switch, when the first switch is not triggered, the power output part stops outputting striking force; The box includes a nail pushing plate for pushing the nails to move toward the power output part; wherein, the nail gun further includes: a trigger lever, connected to the nail box and capable of moving relative to the nail box to a trigger position for triggering the first switch and disengaging from the first switch The non-triggering position; the limiter has a locking position for limiting the triggering lever to the non-triggering position and an unlocking position for allowing the triggering lever to move to the triggering position; wherein, when the nail pusher moves to the preset position, The pusher plate triggers the limiter so that the trigger lever is limited to the non-trigger position; and when the pusher plate leaves the preset position, the trigger lever can trigger the limiter to leave the locking position.

Further, the nail box includes: the first shell, which is formed with a through hole through itself; the stopper is movably arranged in the through hole; the nail pushing plate and the trigger lever are respectively arranged on both sides of the first shell; The nail plate is formed with a pushing portion that pushes the limiting member to move toward the trigger rod in the through hole when it moves to the preset position.

Further, the trigger lever is formed with a limiting groove allowing the limiting member to be at least partially embedded to limit the trigger lever from triggering the first switch.

Further, the limiting member has an arc surface for contacting the groove wall of the limiting groove.

Further, the first housing is also formed with a detachment preventing part for preventing the limiting member from detaching from the through hole.

Further, the first housing is formed with a groove for inserting the pushing part, and the through hole is located in the groove.

Further, the limiting member is a steel ball.

Further, the pushing part is formed with a pushing surface obliquely intersecting with the moving direction of the limiting member.

Further, the trigger lever is also formed with a conflicting portion for adjusting the nailing depth.

Further, the first switch is triggered once, and the power output unit outputs a striking force once.

The invention is beneficial in that: the anti-empty driving structure of the nailing gun in the prior art is optimized, making the anti-air driving structure more reliable, simpler, low in cost and good in assemblability.

Description of drawings

Fig. 1 is the overall structure schematic diagram of nailing gun;

Fig. 2 is a schematic diagram of the internal structure of the nail gun in Fig. 1;

Fig. 3 is a schematic diagram of the structure of the output end of the nail gun and the nail box in Fig. 1;

Fig. 4 is a schematic view of the structure after the second shell of the nail box shown in Fig. 3 is opened;

Fig. 5 is a schematic structural view of the nail box shown in Fig. 3 with the second casing and the nail pushing plate hidden behind the first casing;

Fig. 6 is a structural schematic diagram of the nail box shown in Fig. 3 hiding the first casing and installing the second casing and the pusher plate of the trigger lever;

Fig. 7 is an exploded schematic diagram of the nail box shown in Fig. 3;

Fig. 8 is an enlarged view of the second shell of the nail box shown in Fig. 7 and the first elastic member and the top provided therein;

Fig. 9 is a schematic structural view of the nail pushing plate shown in Fig. 7;

Fig. 10 is a perspective view independently displayed as an air defense structure;

Fig. 11 is a plan view of the trigger lever of the anti-runaway structure shown in Fig. 10;

FIG. 12 is a schematic perspective view of the trigger lever in FIG. 11 .

Detailed ways

Fig. 1 shows a power tool according to a first embodiment of the present invention. The power tool is specifically a nail gun 100, which is used to generate a striking force on a nail, so that the nail is driven into a workpiece.

As shown in Figures 1 to 6, the nail gun 100 includes: a power output unit 10 and a nail box 20, the power output unit 10 is used to output striking force to the nail; the nail box 20 is used to accommodate the nail and connect the power output unit 10 The output end 11 is provided with a nail outlet 111 at the output end 11 . The user puts nails into the nail box 20, and operates the control mechanism to perform the nailing operation. Specifically, the control mechanism includes a first switch 12 and a second switch 13. Only when the first switch 12 and the second switch 13 are activated at the same time, the entire mechanism can start and carry out the nailing operation. In addition, the first switch 12 triggers once , the power output unit 10 only outputs the striking force once, and when the power output unit 10 needs to output the striking force again, the first switch 12 needs to be triggered again. The first switch 12 is triggered by the trigger lever 24 that is connected on the nail box 20, and the trigger lever 24 has relative nail box activities to trigger the trigger position of the first switch 12 and break away from the non-trigger position of the first switch 12; There is a limiter 25 for locking the trigger lever 24 in a non-triggered position and an unlocked position for allowing the trigger lever 24 to move to the triggered position. When the nails in the nail box 20 are reduced to a preset number, the stopper 25 enters the locking position, limiting the stroke of the trigger lever 24, so that the trigger lever 24 cannot touch the first switch 12, and the nail gun 100 cannot be started; When the nails in the nail box 20 are greater than the preset value, the stopper 25 enters the unlocked position, and the stroke of the trigger lever 24 can be triggered to the first switch 12, and normal nailing operations can be performed at this time.

Specifically, the trigger lever 24 is connected to an end of the nail box 20 close to the output end 11, the nail box 20 includes a first housing 21, a second housing 22 and a nail pushing plate 23, and the first housing 21 is fixedly connected to the power output part The output end 11 of 10 and the nail pushing plate 23 are connected to the second housing 22, and the second housing 22 is movably connected with the first housing 21 and is limited within the stroke range of the guide rail formed by the first housing 21. When loading nails into the nail box 20 for operation, the nail pushing plate 23 pushes the nails to the first sliding direction 101, that is, the output end 11 of the power output part 10, and the nails are driven out by the striker provided in the output end 11. The pushing part 234 formed on the pushing part 23 of the pushing part 23 pushes the stopper 25 provided in the first housing 21 to enter The preset limit groove 241c of the trigger lever 24 restricts the stroke of the trigger lever 24, so that the trigger lever 24 cannot touch the first switch 12 to realize the anti-runaway function.

The structure of the nail box 20 and the structure of the trigger lever 24 are described in detail below:

As shown in Figure 9, the metal push nail plate 23 is formed with a first limiting part 231, a second limiting part 232, a first stopper part 233 and a pushing part 234, the first limiting part 231, the second limiting part 232. The first stopper 233 and the pusher 234 are integrally formed or assembled into the main body of the nail pusher 23. The first limiter 231 and the second limiter 232 are used to guide the movement of the nailer 23 and limit the movement of the nailer 23 Displacement perpendicular to the first sliding direction 101; the first stopper 231, the second stopper 232 and the first stopper 233 are located on the same plane, and the first stopper 233 extends to the inside of the second housing 22; push The part 234 is located on the other side, forming a pushing surface 235 obliquely intersecting with the moving direction of the limiting member, so as to facilitate pushing the limiting member 25 and prevent the limiting member 25 from being pushed away from the preset position.

As shown in Fig. 4 and Fig. 8, the first housing 21 of the nail box 20 has a groove-like structure as a whole, and the second groove wall 211 of the groove is formed with a track 212 for matching the sliding of the second housing 22. The bottom is formed with accommodating portion 213 for accommodating nails; the bottom of the groove is also formed with a groove 214 for accommodating nail pushing plate 23, and groove 214 is provided with a through hole at a preset position near the output end 11 of power output part 10, through hole A limiter 25 is arranged inside, and the limiter 25 limiter has an arc surface for contacting the groove wall of the limiter groove 241c. The limiter 25 in this embodiment is a steel ball, and the through hole is located at the edge of the groove 214. One side is also formed with the anti-off portion 215 of the stop limiter 25, and the side of the through hole away from the groove 214 is installed with a trigger lever 24 perpendicular to the above-mentioned first sliding direction 101, and the trigger lever 24 makes the steel ball in the through hole. The side away from the groove 214 will not come out of the through hole.

The second housing 22 of the nail box 20 is cover-shaped, and is used to cover the chamber that the first housing 21 forms for containing the nails; The track 212 formed by the groove wall 211 cooperates with the second protruding portion 221 , and the second protruding portion 221 snaps into the track 212 so that the second shell 22 can slide relative to the first shell 21 . The second housing 22 is also formed with a groove that cooperates with the first limiting portion 231 and the second limiting portion 232, and is used to limit the distance between the nail push plate 23 and the second housing 22 perpendicular to the first sliding direction 101. displacement. The second housing 22 is also formed with an empty slot 222 for accommodating the first elastic member 223. One end of the empty slot 222 is closed and the other end communicates with the outside world. One end of the first elastic member 223 is against the closed end of the empty slot 222, and the other end covers Be located on a top 224, the top 224 is made of two cylinders with different diameters, the diameter of the first cylinder of the top 224 is smaller than the inner diameter of the elastic part, for the first elastic part 223 sleeve, the diameter of the second cylinder is larger than The inner diameter of the first elastic part 223 is used to stop the elastic part from moving away from the top 224; the second cylinder is also provided with a gap for the first stop part 233 to engage, and one end of the empty groove 222 communicated with the outside is also provided with a Insert the hole of the stopper pin for ejection of the stopper head 224. More specifically, the first elastic member 223 is limited in the hollow groove 222 and is in a state of compressed energy storage. into the gap of the second cylinder, so that the first stop portion 233 of the nail pushing plate 23 can push the plug 224 to compress the first elastic member 223 or be pushed forward by the release of elastic energy of the first elastic member 223 .

As shown in Figures 10 to 12, the trigger lever 24 is connected by the first trigger piece 241 and the second trigger piece 242 through the fine adjustment assembly 243, and the fine adjustment assembly 243 can adjust the relative relationship between the first trigger piece 241 and the second trigger piece 242. Location. In order to meet different working conditions, the first triggering part 241 and the second triggering part 242 can also be integrally formed. The first trigger part is formed with a first trigger part 241a for triggering the above-mentioned first switch 12; it is also formed with an oval limiting hole 241b, which is movably connected with the first housing 21 through a fastener, that is, the trigger lever 24 is activated. It is limited on the first housing 21, but there can be a certain movable stroke along the direction of the nail outlet 111, which meets the distance requirement that the first trigger part 241a can trigger to the first switch 12. In this embodiment, The stroke is greater than or equal to 3mm and less than or equal to 10mm. When the stroke is 6mm, the effect of the whole mechanism to complete the strike movement is the best; the first trigger member is formed with a limiting groove 241c for limiting the stroke of the trigger rod 24; further , the first trigger member 241 is also formed with a first connecting portion 241d for connecting the fine-tuning assembly 243, the fine-tuning assembly 243 is fixedly connected to the first connecting portion 241d, and the built-in fine-tuning member 243a can be extended or shortened for The relative position of the second trigger member 242 is adjusted.

The second trigger member 242 is formed with a second connecting portion 244a for connecting to the fine-tuning member 243a; the second trigger member 242 also forms an accommodating portion 244b and a resisting portion 244c, the accommodating portion 244b is sleeved by the second elastic member 244 And limit the disengagement of the second elastic member 244; specifically, the first housing 21 is formed with a receiving chamber 216 at a position close to the nail outlet 111 for receiving the second elastic member 244 and matching the accommodating part 244b, and one end of the receiving chamber 216 is open , closed at one end. The conflicting portion 244c is used to collide with the workpiece, and a rubber sleeve is sheathed on it to avoid damage caused when the conflicting portion 244c directly contacts the workpiece.

More specifically, the above-mentioned fine-tuning member 243a is a screw, and the length can be adjusted by thread rotation. Adjust the fine-tuning assembly 243 so that when the relative distance between the second trigger member and the first trigger member is relatively long, when the user performs nailing operations, the contact portion 244c protrudes from the nail opening 111 and can directly contact the workpiece. Can be exposed on the surface of the workpiece; adjust the fine-tuning assembly 243 so that when the relative distance between the second trigger member and the first trigger member is relatively close, when the user performs nailing operations at this time, the conflicting portion 244c is flush with the nail outlet 111, and the nail is ejected The mouth 111 may directly abut the workpiece, at which point the nail is driven into the interior of the workpiece.

When nails need to be loaded into the nail box 20, the second housing 22 is opened, and now the nail pushing plate 23 and the second housing 22 slide to a position away from the output end 11 at the same time, and the nails are loaded into the nail. The sliding direction 101 is limited in the groove. At this time, the second housing 22 is closed, and the nail pushing plate 23 slides to the position where the nail is located. Due to the blocking of the nail, the nail pushing plate 23 stops moving. At this time, the nail pushing plate 23 The first stop stops the plug 224 and compresses the first elastic member 223 to the energy storage state, and the second housing 22 continues to move to the locking position. When the user is working, the contact part 244c is touched against the workpiece, the second triggering member 242 is away from the nail outlet 111, the second elastic member 244 is compressed into the accommodation cavity 216, the first triggering member 241 is moved away from the nail outlet 111 and simultaneously triggers the second One switch 12, at this time the user operates the second switch 13, the nail is driven out, the first elastic member 223 pushes the nail pushing plate 23 to slide towards the output end 11, the nail pushing plate 23 pushes the nail to move towards the output end 11, and then the contact portion 244c Away from the workpiece, the second trigger member 242 is reset under the action of the second elastic member 244, and the first trigger member 241 is reset together thereupon and is away from the first switch 12. At this time, the mechanism is locked and cannot be nailed; at this time, again Put the conflicting part 244c against the workpiece, repeat the above operation, and the nail is driven out again; repeat the above steps and the nail is driven out continuously, when the pushing part 234 of the nail pushing plate 23 moves to the position of the stopper 25, and presses the stopper 25 into the first position. In the limiting groove 241c of the triggering piece 241, the first triggering piece 241 is limited within the stroke range of the limiting groove 241c at this time, and its stroke cannot reach the first switch 12, the mechanism is locked, and the nail cannot be driven out, realizing air defense hit function. It can be understood that when the pushing part 234 of the nail pushing plate 23 moves to the position where the stopper 25 is located, the remaining nails in the nail box 20 can be preset, which can be in the range of 0 to 10, and the best is 0 root, but for different working conditions and user experience, the better range is 3 to 5.

The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the industry should understand that the above-mentioned embodiments do not limit the present invention in any form, and all technical solutions obtained by means of equivalent replacement or equivalent transformation fall within the protection scope of the present invention.

Claims (10)

1. A nailer, comprising:

a magazine for accommodating nails;

a power output section for outputting a striking force to the nail;

a first switch, wherein the power output part stops outputting the striking force when the first switch is not triggered;

the nail box comprises a nail pushing plate for pushing the nails to move towards the power output part;

wherein,,

the nailing gun further comprises:

a trigger lever connected to the staple cartridge and movable relative to the staple cartridge to a trigger position to trigger the first switch and a non-trigger position to disengage the first switch;

a limiter having a locked position for limiting the trigger lever to the non-trigger position and an unlocked position for allowing the trigger lever to move to the trigger position;

when the nail pushing plate moves to a preset position, the nail pushing plate triggers the limiting piece so that the trigger rod is limited at the non-trigger position; and when the nail pushing plate is separated from the preset position, the trigger rod can trigger the limiting piece to be separated from the locking position.

2. The nailer of claim 1 wherein:

the staple cartridge includes:

a first housing having a through hole penetrating therethrough;

the limiting piece is movably arranged in the through hole; the nail pushing plate and the trigger rod are respectively arranged at two sides of the first shell; the nail pushing plate is provided with a pushing part which pushes the limiting piece to move towards the trigger rod in the through hole when the nail pushing plate moves to the preset position.

3. The nailer of claim 2 wherein:

the trigger lever is formed with a limit groove allowing the limit member to be at least partially embedded to limit the trigger lever to trigger the first switch.

4. A nailer according to claim 3, wherein:

the limiting piece is provided with an arc surface which is used for being contacted with the groove wall of the limiting groove.

5. The nailer of claim 2 wherein:

the first housing is further formed with a drop-preventing portion for preventing the stopper from being separated from the through hole.

6. The nailer of claim 2 wherein:

the first housing is formed with a groove into which the pushing portion is inserted, and the through hole is located in the groove.

7. The nailer of claim 1 wherein:

the limiting piece is a steel ball.

8. The nailer of claim 2 wherein:

the pushing part is provided with a pushing surface obliquely intersecting with the movement direction of the limiting piece.

9. The nailer of claim 1 wherein:

the nailing gun comprises a fine adjustment assembly, and the trigger rod is further provided with a collision part which passes through the fine adjustment assembly to limit the nailing depth.

10. The nailing gun of any one of claims 1-9, wherein:

the first switch is triggered once, and the power output part outputs a striking force once.

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