CN111347376B

CN111347376B - Tool for preventing mistake shooting and shooting

Info

Publication number: CN111347376B
Application number: CN202010305267.7A
Authority: CN
Inventors: 王爱国; 朱清华; 常凤智; 高冬生; 徐朋
Original assignee: Nanjing Toua Hardware & Tools Co ltd
Current assignee: Nanjing Toua Hardware & Tools Co ltd
Priority date: 2020-04-17
Filing date: 2020-04-17
Publication date: 2022-12-02
Anticipated expiration: 2040-04-17
Also published as: CN111347376A

Abstract

The invention relates to an anti-misshooting impact tool, and belongs to the technical field of electric tools. The piston of the tool energy storage mechanism is connected with a firing pin extending to the nailing seat; the nailing seat is provided with a nail box and a gun nozzle, and the nail box is provided with a nail pusher; an electric lifting mechanism is arranged between the grab handle and the nail box on one side of the cylinder body; the nailing seat is provided with a sliding sleeve which forms a moving pair with the nailing seat, a limiting rod sleeved with an upper elastic piece and a lower elastic piece is inserted in the sliding sleeve in a sliding way, and the rear end of the gun nozzle is provided with a limiting block; the striker has a stored energy ready position; the stop lever has a retracted position and an extended position. After the nail ejecting device is adopted, the chain riveting can not directly enter the nail ejecting seat under the action of the nail pusher, so that the nails can not be ejected even if the locking of the firing pin is accidentally failed, the phenomenon of out-of-control striking is thoroughly avoided, and the operation safety is ensured.

Description

Tool for preventing mistake shooting and shooting

Technical Field

The invention relates to a tool for striking a fastener, in particular to an anti-misshooting striking tool, and belongs to the technical field of electric tools.

Background

Tools for fixing one object to another object by means of nail-like fasteners have long used gas as a power source, including high-pressure gas, gas explosion and the like, which are expensive and have low safety factors. Therefore, in recent years, an electric gas spring nail gun has been proposed, and a typical structure thereof is disclosed in U.S. patent No. US8011441, which includes an energy storage mechanism composed of a cylinder and a piston in a housing, a nail driving base having a retractable gun nozzle at a front end thereof and a nail magazine at one side thereof; one side of the cylinder body is provided with a grab handle with a battery pack, one side of the gun nozzle is provided with a nail box, and the nail box is provided with a nail pusher which pushes the strip nails to a nail driving seat; an electric lifting mechanism for driving the piston to compress and store energy is arranged between the grab handle and the nail box, the lifting mechanism comprises a driving wheel meshed with the firing pin, and the driving wheel is in transmission connection with a motor for providing electric energy by the battery pack.

When the gun nozzle is pressed down, the motor is started, the firing pin is driven by the lifting mechanism to drive the piston to compress air from the temporary locking preparation position, and after the firing pin is disengaged from the lifting mechanism, the firing pin is suddenly released to strike the row nails in the nail box, which are pushed into the nail driving seat by the nail pusher, so that the row nails are ejected from the gun nozzle.

Although the electric gas spring nail gun is safer compared with the similar products of the traditional gas power source, in order to improve the nailing speed, after the nail is shot, the firing pin is pulled to an energy storage preparation position which is positioned behind the nail and is temporarily locked, and at the moment, if the locking structure of the firing pin fails for various reasons, the nail is immediately shot, the phenomenon of mistaken shooting caused by out-of-control shooting occurs, and new potential safety hazards are generated.

Disclosure of Invention

The invention aims to: aiming at the potential safety hazard existing in the prior art, the anti-misshooting beating tool capable of thoroughly eliminating out-of-control beating is provided through structural improvement, so that the use safety is ensured.

In order to achieve the purpose, the basic technical scheme of the anti-misshooting striking tool comprises the following steps: the energy storage mechanism comprises a cylinder body in a shell and a piston, wherein the piston is connected with a firing pin extending to a nailing seat; one side of the nailing seat is provided with a nail box, the front end of the nail box is provided with a telescopic gun nozzle, and the nail box is provided with a nail pusher which pushes the chain riveting to the nailing seat; a grab handle is arranged on one side of the cylinder body, and an electric lifting mechanism for driving the piston to compress and store energy is arranged between the grab handle and the nail box;

the nailing seat is provided with a sliding sleeve which forms a moving pair with the nailing seat, a limiting rod sleeved with an upper elastic piece and a lower elastic piece is inserted in the sliding sleeve in a sliding manner, and the rear end of the gun nozzle is provided with a limiting block for blocking the limiting rod after the gun nozzle is pressed;

the firing pin is provided with an energy storage preparation position with a controlled end head for blocking the chain riveting; the limiting rod is provided with an end retraction position under the action of the upper elastic piece, and an extension position for blocking the limiting block under the action of the lower elastic piece when the nail pusher pushes up the sliding sleeve.

After the technical scheme is adopted, the firing pin is positioned at the energy storage preparation position of the end head blocking the chain riveting after the nail shooting is finished, so that the chain riveting cannot directly enter the nail outlet channel of the nail driving seat under the action of the nail pusher, and the nail cannot be ejected even if the locking of the firing pin is accidentally failed, so that the out-of-control striking phenomenon is eliminated, and the operation safety is ensured; and the problem of mistaken shooting when the finally remained chain riveting is connected with re-binding when the striker blocking position is set is reasonably solved. Because, in order to avoid idle striking when no nail is left after the chain riveting is exhausted, the conventional design requires that a new chain riveting is additionally arranged when the number of nails of the chain riveting is less than a preset value (about 3), in the operation process after the invention is adopted, when the number of the chain riveting is more than the preset value, the nail pusher is not contacted with the sliding sleeve, the limiting rod retracts under the action of the upper elastic piece, and the striking of the gun nozzle cannot be influenced; when the quantity of the chain nails is one more than the preset reserved value, the limiting block is positioned at a position for blocking the end head of the limiting rod from extending out, the front end of the firing pin can still be in an energy storage preparation state for blocking the chain nails from entering the nailing seat, and when the firing pin moves backwards to store energy and is to be struck, the nail pusher pushes the chain nails and simultaneously pushes the sliding sleeve, so that the limiting rod has an extending trend under the action of the lower elastic part (the limiting block can not move temporarily); later when the firing pin hits to hit the chain riveting and get back to the ready position again, the stopper no longer blocks the gag lever post because of the rifle mouth resets its pressurized preceding position, though the nail of reserving gets into in the seat of nailing afterwards, the rifle mouth has still can't retract the strike because of the gag lever post stretches out the motion space that has blockked the stopper because of the gag lever post to mistake shooting protect function this moment has been realized. And then, carrying out the nailing operation, pulling the nail pusher to the newly-loaded chain nails, and automatically withdrawing the limiting rod under the action of the upper elastic piece and the lower elastic piece because the number of the nails is more than the preset value, so that the gun nozzle recovers the conventional striking operation. As the method and the device thoroughly solve the problem of all misshooting including the connection process of the remaining chain riveting and the re-nailing, and ensure the operation safety.

Drawings

Fig. 1 is a schematic structural diagram of a first embodiment of the present invention.

Fig. 2 is a schematic view of the striking and lifting mechanism of the embodiment of fig. 1.

Fig. 3 is a partial cross-sectional structural schematic view of the striking and lifting mechanism of the embodiment of fig. 1.

Fig. 4 is a perspective view of an energy storage preparation position of the anti-misradiation structure in the embodiment of fig. 1.

Fig. 5 is a perspective view of an energy storage and impact waiting position of the anti-misradiation structure in the embodiment of fig. 1.

Fig. 6 is a schematic perspective exploded view of the anti-misradiation structure of the embodiment of fig. 1.

Fig. 7 is an enlarged partial structural view of the installation of the stop lever in the embodiment of fig. 1.

FIG. 8 is a schematic view of the embodiment of FIG. 1 with three nails remaining.

Detailed Description

The invention will be further described with reference to the accompanying drawings. The mis-shooting impact preventing tool of the embodiment is basically constructed as shown in fig. 1, 2, 3, 4 and 5, a telescopic gun nozzle 2 and a nailing seat 3 are installed at the front end of a shell 1, an energy storage mechanism 8 consisting of a cylinder body and a piston is installed in the shell, the piston is connected with a firing pin 4 extending to the nailing seat 3, a nail box 5 for placing a row of nails D is arranged at the lower side of the nailing seat 3, and the nail box 5 is provided with a nail pusher 6 for pushing the row of nails D to the nailing seat 3. A grab handle 7 with a battery pack is arranged on the lower side of the cylinder body of the energy storage mechanism 4, and an electric lifting mechanism 9 which is positioned above the grab handle 7 and used for driving a piston to compress and store energy is arranged between the grab handle 7 and the nail box 5. The electric lifting mechanism 9 of the embodiment is composed of a tooth-missing abdicating driving wheel 9-1 meshed with the upper side teeth of the firing pin 4, and the wheel shaft of the driving wheel is in transmission connection with a motor for providing electric energy by a battery pack through a speed reduction transmission mechanism, so that the firing pin can be electrically driven to move to compress the piston for energy storage. These structures are similar to the prior art and are not described in further detail, as they can be seen in the chinese patent document No. 201910620829.4 entitled "a fastener driving tool".

As shown in figures 6 and 7, a sliding sleeve 3-1 which forms a moving pair with the nailing seat 3 is arranged in a vertical hole of the nailing seat 3, a limiting rod 3-2 of an upper elastic part 3-U and a lower elastic part 3-D is inserted and sleeved in an inner hole of the sliding sleeve 3-1 in a sliding way, and the specific structure of the nailing seat is shown in figures 6 and 7. The upper part of a vertical hole of the nailing seat 3 is provided with a fixed sleeve 3-3, the lower part is provided with a sliding sleeve 3-1 which forms a moving pair and is limited by an end flange, the lower part is provided with a reducing ring 3-9 at the lower end of an inner hole of the sliding sleeve 3-1, the upper end is tightly matched with a positioning sleeve 3-5, a limiting rod 3-2 which forms a moving pair with the limiting sleeve 3-5 is arranged in the positioning sleeve 3-5, the lower end of the limiting rod 3-2 is provided with an expanding head 3-7 with an upper limit positioned at the reducing ring 3-9, the middle part is provided with an open retainer ring 3-8 with a lower limiting function, the upper and lower sections are respectively sleeved with an elastic part 3-U and a lower elastic part 3-D, the two ends of the upper elastic part 3-U respectively abut against the fixed sleeve 3-3 and are tightly matched and arranged in a guide ring 3-4 of the limiting rod 3-2, and the two ends of the lower elastic part 3-D respectively abut against the positioning sleeve 3-5 and the flange at the lower end of the sliding sleeve 3-1. Therefore, when the sliding sleeve 3-1 is not acted by the nail pusher 6 and is pressed down by the upper elastic piece 3-U, the limiting rod 3-2 is in the upper end retraction position shown in figure 4 (the limiting block 10 is not blocked); when the nail pusher 6 pushes the sliding sleeve 3-1 upwards, the lower pressure of the upper elastic piece 3-U is overcome, and the sliding sleeve 3-1 and the limiting rod 3-2 therein are driven in sequence, so that the upper end of the nail pusher is positioned at the extending position of the blocking limiting block 10 shown in figure 5. The upper elastic piece and the lower elastic piece are organically combined and have a reasonable limiting structure, and the limiting rod is guaranteed to realize required displacement.

The rear end of the gun nozzle 2 is provided with a limiting block 10 for blocking the limiting rod 3-2 after the gun nozzle is pressed, the concrete structure of the gun nozzle is that the rear end of the gun nozzle 2 extends upwards to form a limiting frame 2-1, a screw serving as the limiting block 10 is screwed into a screw hole of the limiting frame 2-1, and the end of the screw is positioned above the limiting rod, so when the gun nozzle 2 is pressed to retreat, the limiting rod 3-2 is blocked to ascend, and the front position and the rear position of the limiting rod are convenient to adjust.

Because the positioning sensor 9-2 is arranged on the tooth-missing abdicating driving wheel 9-1, when the firing pin 4 is controlled to fire nails (i.e. strike fasteners) by controlling the brake motor, as shown in fig. 8, the firing pin is retreated and stopped at the energy storage preparation position of which the end head blocks the strip nails D, so that the strip nails D cannot directly enter the nail ejection channel 3-6 of the nail ejecting seat 3 under the action of the nail pusher 6, and the nails cannot be ejected even if the firing pin advances due to accidental failure of locking positioning. The positioning that the end blocks the strip nails to enter the nail outlet channel when the conventional firing pin is retracted to the preparation position is broken through in the embodiment, and other technical schemes can also be adopted for realizing, for example, a positioning sensor is replaced by other electronic devices such as a travel switch, the energy storage preparation position adopts a mechanical structure for positioning, and the like, so that although the uncontrolled striking phenomenon is avoided and the operation safety is effectively ensured, when the number of nails is not more than the reserved number and the strip nails need to be supplemented, the uppermost nail already enters the nail outlet channel 3-6, and therefore the risk of error shooting caused by faults such as failure of a firing pin locking structure still exists.

As can be understood from the above description, when the number of nails in the magazine is significantly greater than the preset value of 2, the nail pusher does not contact the nail seat, and the limit rod retracts under the action of the elastic member (see fig. 4), so that the striking of the gun nozzle is not affected; when the chain riveting quantity is more than 1 than the reservation value, when the firing pin reaches the position of waiting to strike after the energy storage from the energy storage ready position backward motion, the ejector pin promotes the chain riveting upward movement and promotes the sliding sleeve simultaneously under the effect of ejector pin spring (not shown in the figure), and then makes the gag lever post stretch out to the position (see fig. 5) that blocks the stopper after the rifle mouth resets through lower elastic component down to make the rifle mouth can't strike, can put in the chain riveting safely, realized reserving the chain riveting and leave the mistake of surplus nail when installing the linking process again and not using and penetrated the prevention function.

In addition to the above embodiments, the present invention may have other embodiments. All technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope of the claims of the present invention.

Claims

1. An anti-misshooting beating tool comprises an energy storage mechanism consisting of a cylinder body in a shell and a piston, wherein the piston is connected with a firing pin extending to a nailing seat; one side of the nailing seat is provided with a nail box, the front end of the nail box is provided with a telescopic gun nozzle, and the nail box is provided with a nail pusher which pushes the chain riveting to the nailing seat; a grab handle is arranged on one side of the cylinder body, and an electric lifting mechanism for driving the piston to compress and store energy is arranged between the grab handle and the nail box; the method is characterized in that: the nailing seat is provided with a sliding sleeve which forms a moving pair with the nailing seat, a limiting rod sleeved with an upper elastic piece and a lower elastic piece is inserted in the sliding sleeve in a sliding manner, and the rear end of the gun nozzle is provided with a limiting block for blocking the limiting rod after the gun nozzle is pressed; the firing pin is provided with an energy storage preparation position with a controlled end head for blocking the chain riveting; the limiting rod is provided with an end retraction position under the action of the upper elastic part, and an extension position of the limiting block is blocked under the action of the lower elastic part when the nail pusher pushes up the sliding sleeve.

2. The mis-strike prevention tool as set forth in claim 1, wherein: the upper part of the vertical hole of the nailing seat is fixed, and the lower part of the nailing seat is provided with a sliding sleeve which forms a moving pair with the nailing seat and is limited by virtue of an end flange.

3. The mis-strike prevention tool of claim 2, wherein: the lower end of the inner hole of the sliding sleeve is provided with a reducing ring, and the upper end of the inner hole of the sliding sleeve is tightly matched with a positioning sleeve; and a limiting rod forming a moving pair with the positioning sleeve is arranged in the positioning sleeve.

4. An anti-mis-strike tool as claimed in claim 3, wherein: the lower end of the limiting rod is provided with an expanding head with the upper limit positioned on the reducing ring, the middle part of the limiting rod is provided with a split retainer ring which plays a role in limiting downwards, and the upper section and the lower section of the limiting rod are respectively sleeved with an upper elastic part and a lower elastic part.

5. The mis-strike prevention tool of claim 4, wherein: and two ends of the upper elastic part respectively lean against the fixed sleeve and are tightly matched and arranged in the guide ring of the limiting rod.

6. The mis-strike prevention tool of claim 5, wherein: and two ends of the lower elastic piece are respectively abutted against the positioning sleeve and the flange at the lower end of the sliding sleeve.

7. An accidental-fire-prevention striking tool according to any one of claims 1 to 6, wherein: the rear end of the gun nozzle extends upwards to form a limiting frame, and a screw serving as a limiting block is screwed into a screw hole of the limiting frame.

8. The mis-strike prevention tool of claim 7, wherein: the electric lifting mechanism is provided with a tooth-missing abdicating driving wheel meshed with the teeth on the upper side of the firing pin, a wheel shaft of the driving wheel is in transmission connection with a motor through a speed reduction transmission mechanism, and the tooth-missing abdicating driving wheel is provided with a positioning sensor.