CN110370225B

CN110370225B - Nailing gun

Info

Publication number: CN110370225B
Application number: CN201810323734.1A
Authority: CN
Inventors: 郝敬冬; 赵小哲
Original assignee: Nanjing Chervon Industry Co Ltd
Current assignee: Nanjing Chervon Industry Co Ltd
Priority date: 2018-04-12
Filing date: 2018-04-12
Publication date: 2023-06-30
Anticipated expiration: 2038-04-12
Also published as: CN110370225A

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

Nailing gun

Technical Field

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

Background

In order to avoid energy waste, the existing nailing gun products in the current market are all provided with an idle driving prevention structure, and when no nails or a small number of nails exist in a nailing box of the nailing gun, the mechanism cannot normally operate. The existing air defense knot tying structure in the current market mainly comprises a mechanical type and an electronic type, the electronic type is that an induction switch or a proximity switch senses a signal to realize air defense in a program, the sensitivity requirement of the induction switch is high, the quantity of residual nails in the air defense is not easy to control, and the air defense knot tying structure is not stable like a mechanical type.

The current idle-beating prevention device is relatively complex in structure, low in sensitivity, easy to occur the condition that staples or idle-beating prevention functions fail and the like, and the complex structure causes high idle-beating prevention structure cost and high subsequent maintenance cost.

Disclosure of Invention

In order to solve the defects in the prior art, the invention aims to provide an idle-run-preventing nailing gun which is simple in structure, high in assemblability and low in cost.

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

a nailer, 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 triggers the limiting piece so that the trigger rod is limited at 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.

Further, 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 a preset position.

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

Further, the limiting piece is provided with an arc surface for contacting with the groove wall of the limiting groove.

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

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

Further, the limiting member is a steel ball.

Further, the pushing portion is formed with a pushing surface obliquely intersecting the movement direction of the stopper.

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

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

The invention has the advantages that: the structure is prevented from being beaten by the air gun in the prior art, so that the structure is more reliable, simpler, low in cost and good in assemblability.

Drawings

FIG. 1 is a schematic view of the entire construction of a nailing gun;

FIG. 2 is a schematic view of the internal structure of the nailer of FIG. 1;

FIG. 3 is a schematic view of the output and cartridge portion of the nail gun of FIG. 1;

FIG. 4 is a schematic view of the second housing of the cartridge of FIG. 3 shown in an open configuration;

FIG. 5 is a schematic view of the second housing and the ejector plate of the cartridge of FIG. 3 with the first housing hidden;

FIG. 6 is a schematic view of the second housing and staple pusher plate of the staple cartridge of FIG. 3 with the first housing hidden and the trigger lever mounted;

FIG. 7 is an exploded view of the staple cartridge of FIG. 3;

FIG. 8 is an enlarged view of the second housing of the cartridge of FIG. 7 with the first resilient member and the plug disposed therein;

FIG. 9 is a schematic view of the structure of the ejector plate of FIG. 7;

FIG. 10 is a perspective view of an independent display as an air defense structure;

FIG. 11 is a plan view of the trigger lever of the air defense structure of FIG. 10;

fig. 12 is a perspective view of the trigger lever of fig. 11.

Detailed Description

Fig. 1 shows a power tool of a first embodiment of the present invention, specifically a nailing gun 100 for generating a striking force against nails to strike the nails into a workpiece.

As shown in fig. 1 to 6, the nailing gun 100 includes: a power output portion 10 and a magazine 20, the power output portion 10 for outputting striking force to nails; the nail box 20 is used for accommodating nails and is connected with an output end 11 of the power output part 10, and a nail outlet 111 is arranged at the output end 11. The user loads nails into the magazine 20 and operates the control mechanism to perform a nailing operation. Specifically, the control mechanism includes the first switch 12 and the second switch 13, and the entire mechanism can be started and perform the nailing operation only when the first switch 12 and the second switch 13 are simultaneously started, and furthermore, the first switch 12 is triggered once, the power output portion 10 outputs only one striking force, and when the power output portion 10 is required to output the striking force again, the first switch 12 is required to be triggered again. The first switch 12 is triggered by a trigger lever 24 connected to the nail box 20, and the trigger lever 24 moves to a trigger position for triggering the first switch 12 and a non-trigger position for separating from the first switch 12 relative to the nail box; also present in the magazine 20 is a stop 25 for limiting the trigger lever 24 to a locked position in the non-trigger position and to an unlocked position for allowing the trigger lever 24 to move to the trigger position. When the nails in the nail box 20 are reduced to a preset number, the limiting piece 25 enters the locking position, so that the stroke of the trigger rod 24 is limited, the trigger rod 24 cannot trigger the first switch 12, and the nailing gun 100 cannot be started; when the nails in the nail box 20 are larger than the preset value, the limiting piece 25 enters the unlocking position, the stroke of the trigger rod 24 can be triggered to the first switch 12, and normal nailing operation can be performed at the moment.

Specifically, the trigger lever 24 is connected to an end of the magazine 20 near the output end 11, the magazine 20 includes a first housing 21, a second housing 22, and a push plate 23, the first housing 21 is fixedly connected to the output end 11 of the power output section 10, the push plate 23 is connected to the second housing 22, and the second housing 22 is movably connected to the first housing 21 and is limited within a range of travel of a guide rail formed by the first housing 21. When the nail is put into the nail box 20 for operation, the nail pushing plate 23 pushes the nail to move towards the first sliding direction 101, namely the output end 11 of the power output part 10, and the nail is driven out through the striker arranged in the output end 11, and as the nail is continuously driven out, the nail pushing plate 23 is continuously close to the output end 11, when the nail pushing plate 23 reaches the preset position, the pushing part 234 formed on the nail pushing plate 23 pushes the limiting piece 25 arranged in the first shell 21 to enter the limiting groove 241c preset in the trigger rod 24, so that the stroke of the trigger rod 24 is limited, and the trigger rod 24 cannot touch the first switch 12, and the anti-idle driving function is realized.

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

as shown in fig. 9, the metal ejector plate 23 is formed with a first limit part 231, a second limit part 232, a first stop part 233 and a pushing part 234, the first limit part 231, the second limit part 232, the first stop part 233 and the pushing part 234 are integrally formed or assembled with the ejector plate 23 main body, and the first limit part 231 and the second limit part 232 are used for guiding the ejector plate 23 to move and limiting the ejector plate 23 to move perpendicular to the first sliding direction 101; the first limiting part 231, the second limiting part 232 and the first stopping part 233 are positioned on the same surface, and the first stopping part 233 extends into the second shell 22; the pushing part 234 is located on the other surface, and is formed with a pushing surface 235 obliquely intersecting with the movement 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 8, the first housing 21 of the nail box 20 has a groove-shaped structure as a whole, a track 212 for sliding in cooperation with the second housing 22 is formed on the second groove wall 211 of the groove, and a containing part 213 for containing nails is formed at the bottom of the groove; the groove bottom is also formed with a groove 214 for accommodating the nail pushing plate 23, the groove 214 is provided with a through hole at a preset position close to the output end 11 of the power output part 10, a limiting piece 25 is arranged in the through hole, the limiting piece 25 is provided with an arc surface for contacting with the groove wall of the limiting groove 241c, the limiting piece 25 in the embodiment is a steel ball, one side of the through hole, which is positioned on the groove 214, is also formed with a drop-off preventing part 215 for stopping the limiting piece 25, one side, which is far away from the groove 214, of the through hole is provided with a trigger lever 24 in a direction perpendicular to the first sliding direction 101, and the trigger lever 24 enables the steel ball not to be separated from the through hole on one side, which is far away from the groove 214, of the through hole.

The second housing 22 of the magazine 20 is in the shape of a cover for covering the cavity formed by the first housing 21 for accommodating nails; the two wings of the second housing 22 are further formed with second protrusions 221 which are matched with the tracks 212 formed by the second groove walls 211 of the first housing 21, and the second protrusions 221 are clamped into the tracks 212 so that the second housing 22 can slide relatively to the first housing 21. The second housing 22 is further formed with grooves cooperating with the first and

second stopper portions

231 and 232 for restricting displacement between the staple pushing plate 23 and the second housing 22 perpendicular to the first sliding direction 101. The second casing 22 is further formed with a hollow groove 222 for accommodating the first elastic member 223, one end of the hollow groove 222 is closed, the other end of the hollow groove 222 is communicated with the outside, one end of the first elastic member 223 abuts against the closed end of the hollow groove 222, the other end of the first elastic member is sleeved on a plug 224, the plug 224 is formed by two cylinders with different diameters, the diameter of the first cylinder of the plug 224 is smaller than the inner diameter of the elastic member, the first elastic member 223 is sleeved, the diameter of the second cylinder is larger than the inner diameter of the first elastic member 223, and the second cylinder is used for stopping the elastic member from moving away from the plug 224; the second cylinder is further provided with a notch for the first stop portion 233 to be clamped, one end of the hollow groove 222 communicated with the outside is further provided with a hole for inserting a stop pin, the stop plug 224 is used for being ejected out, more specifically, the first elastic piece 223 is limited in the hollow groove 222 and is in a compressed energy storage state, the first stop portion 233 of the nail pushing plate 23 is clamped into the notch of the second cylinder, and therefore the first stop portion 233 of the nail pushing plate 23 can push the plug 224 to compress the first elastic piece 223 or be pushed forward by elastic energy released by the first elastic piece 223.

As shown in fig. 10-12, the trigger lever 24 is connected by a first trigger piece 241 and a second trigger piece 242 by a trimming assembly 243, the trimming assembly 243 being capable of adjusting the relative position between the first trigger piece 241 and the second trigger piece 242. To meet different working conditions, the first trigger piece 241 and the second trigger piece 242 may be integrally formed. The first trigger is formed with a first trigger portion 241a for triggering the first switch 12; an oval limiting hole 241b is formed, and is movably connected with the first shell 21 through a fastener, namely, the trigger rod 24 is limited on the first shell 21, but a certain movable stroke can be provided along the direction of the nail outlet 111, the stroke meets the distance requirement that the first trigger part 241a can trigger the first switch 12, in the embodiment, the stroke is more than or equal to 3mm and less than or equal to 10mm, and when the stroke is 6mm, the effect of the whole mechanism for completing the striking motion is optimal; the first trigger member is formed with a limiting groove 241c for limiting the stroke of the trigger lever 24; further, the first triggering element 241 is further formed with a first connecting portion 241d for connecting the trimming assembly 243, and the trimming assembly 243 is fixedly connected to the first connecting portion 241d, and the trimming member 243a provided therein can be extended or shortened for adjusting the relative position of the second triggering element 242.

The second trigger 242 is formed with a second connection portion 244a for connecting to the fine adjustment member 243 a; the second triggering piece 242 further forms a holding portion 244b and an abutting portion 244c, and the holding portion 244b is used for sleeving the second elastic piece 244 and limiting the detachment of the second elastic piece 244; specifically, the first housing 21 is formed with a receiving chamber 216 for receiving the second elastic member 244 and cooperating with the receiving portion 244b at a position near the nail outlet 111, and the receiving chamber 216 is opened at one end and closed at one end. The abutting portion 244c is used for abutting against the workpiece, and a rubber sleeve is sleeved on the abutting portion, so that damage caused when the abutting portion 244c directly contacts the workpiece is avoided.

More specifically, the fine adjustment member 243a is a screw, and is screwed to adjust the length. When the fine adjustment assembly 243 is adjusted so that the relative distance between the second trigger piece and the first trigger piece is far, and the user performs nailing operation at this time, the abutting part 244c protrudes out of the nail outlet 111 and can directly abut against the workpiece, and the nails which are driven at this time can be exposed on the surface of the workpiece; when the fine adjustment assembly 243 is adjusted so that the relative distance between the second trigger piece and the first trigger piece is relatively short, the abutting portion 244c is flush with the nail outlet 111 when the user performs nailing operation, the nail outlet 111 can directly abut against the workpiece, and the nail is driven into the workpiece.

When nails are required to be loaded in the nail box 20, the second shell 22 is opened, at the moment, the nail pushing plate 23 and the second shell 22 slide to a position far away from the output end 11 at the same time, nails are loaded, nails are limited in grooves perpendicular to the first sliding direction 101, at the moment, the second shell 22 is closed, the nail pushing plate 23 slides to the position where the nails are located, due to the blocking of the nails, the nail pushing plate 23 stops moving, at the moment, the first stop of the nail pushing plate 23 stops the top 224 and compresses the first elastic piece 223 to an energy storage state, and the second shell 22 continues to move to the locking position. When a user works, the abutting part 244c abuts against the workpiece, the second trigger piece 242 is far away from the nail outlet 111, the second elastic piece 244 is compressed into the accommodating cavity 216, the first trigger piece 241 is far away from the nail outlet 111 along with the first trigger piece, the first switch 12 is triggered at the same time, at the moment, the user operates the second switch 13, nails are driven out, the first elastic piece 223 pushes the nail pushing plate 23 to slide towards the output end 11, the nail pushing plate 23 pushes the nails to move towards the output end 11, the abutting part 244c is far away from the workpiece, the second trigger piece 242 is reset under the action of the second elastic piece 244, the first trigger piece 241 is reset together and far away from the first switch 12, at the moment, the mechanism is locked and cannot be nailed; at this time, the abutting portion 244c is abutted against the workpiece again, the above operation is repeated, and the nail is driven out again; the above steps are repeated, the nail is continuously driven out, when the pushing part 234 of the nail pushing plate 23 moves to the position of the limiting part 25 and presses the limiting part 25 to enter the limiting groove 241c of the first triggering part 241, at this time, the first triggering part 241 is limited in the travel range of the limiting groove 241c, the travel of the first triggering part cannot reach the first switch 12, the mechanism is locked, the nail cannot be driven out, and the function of preventing idle driving is realized. It will be appreciated that when the pushing portion 234 of the ejector plate 23 moves to the position of the limiting member 25, the nails remaining in the nail box 20 may be preset, and may be in the range of 0 to 10 nails, and most preferably 0 nails, but for different working conditions and user experiences, the preferred range is 3 to 5 nails.

The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be appreciated by persons skilled in the art that the above embodiments are not intended to limit the invention in any way, and that all technical solutions obtained by means of equivalent substitutions or equivalent transformations fall within the scope of the invention.

Claims

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.