CN220030113U - Fastener of conveniently changing firing pin hits instrument - Google Patents

Abstract

The utility model relates to a fastener beating tool with a striker convenient to replace, and belongs to the technical field of electric tools. The shell of the tool is internally provided with an energy storage mechanism formed by a cylinder body and a piston, a striking mechanism formed by a telescopic gun nozzle of a front-end nailing seat, a nailing mechanism formed by a firing pin connected with the piston and extending towards the nailing seat, a lifting mechanism formed by a driving wheel driven by a motor meshed with the firing pin, and a nail conveying mechanism formed by a nail box arranged at one side of the nailing seat, wherein the rear end of the cylinder body is packaged with a detachable cylinder cover; the casing is extended downwards to a position between the grab handle and the nail box, a power cabin for arranging the motor and the transmission mechanism is arranged at the position of the casing corresponding to the shaft end of the motor, and a tool hole is formed at the position of the casing corresponding to the shaft end of the motor. When the firing pin needs to be detached, a tool such as a screwdriver is screwed on the shaft end of the motor after passing through the tool hole to drive the driving wheel to rotate to a position separated from the firing pin, and the cylinder cover can be opened to be conveniently taken out, so that the complex operation of disassembling the whole machine is avoided.

Description

Fastener of conveniently changing firing pin hits instrument

Technical Field

The utility model relates to a fastener beating tool, in particular to a fastener beating tool with a striker convenient to replace, and belongs to the technical field of electric tools.

Background

When the fastener striking tool such as an electric air spring nail gun works, a piston in a cylinder body is driven by compressed air power to drive a striker to drive a nail into a workpiece, and the tool is a tool commonly used in industries such as construction, decoration and the like, and the typical structure is disclosed in Chinese patent literature with the name of a power type fastener driver with the application number 202180025167.1, and comprises an energy storage mechanism consisting of the cylinder body and the piston in a shell, wherein a telescopic gun nozzle is arranged at the front end of a nailing seat, and a nail box is arranged at one side of the nailing seat; 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 for pushing the row nails to a nailing 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 for the battery pack. When the gun nozzle is pressed down, the motor is started, the striker is driven by the lifting mechanism to drive the piston to compress air from the temporary locked preparation position, and after the striker is separated from the engagement with the lifting mechanism, the striker is released suddenly to drive the row nails of the nailing seat in the nailing box, so that the row nails are ejected from the gun nozzle.

Practice shows that the firing pin is inevitably worn after a period of use, and even possibly broken, which affects the continued striking operation, so that the firing pin needs to be disassembled for maintenance or replacement. However, although the detachable structural design of the rear end cylinder cover has appeared, the cylinder cover cannot be directly opened to be pulled out due to the fact that the firing pin is in a meshed state with the driving wheel of the lifting mechanism, the whole machine still needs to be disassembled, the operation is complex, and the maintenance and replacement difficulty of the firing pin is high.

Disclosure of Invention

The utility model aims at: aiming at the defects in the prior art, a fastener striking tool which is convenient to detach and maintain the firing pin is provided, so that the maintenance and replacement operation of the firing pin is simplified.

In order to achieve the above object, the basic technical scheme of the fastener striking tool for conveniently replacing the firing pin of the utility model is as follows: the device comprises a shell with a grab handle, wherein an energy storage mechanism formed by a cylinder body and a piston, a striking mechanism formed by a telescopic gun nozzle of a front-end nailing seat, a nailing mechanism formed by a firing pin which is connected with the piston and extends towards the nailing seat, a lifting mechanism formed by a driving wheel which is driven by a motor and meshed with the firing pin, and a nail conveying mechanism formed by a nail box arranged at one side of the nailing seat are arranged in the shell, and a detachable cylinder cover is packaged at the rear end of the cylinder body;

the casing is extended downwards to a position between the grab handle and the nail box, a power cabin for arranging the motor and the transmission mechanism is arranged at the position of the casing corresponding to the shaft end of the motor, and a tool hole is formed at the position of the casing corresponding to the shaft end of the motor.

When the firing pin needs to be detached, a tool such as a screwdriver is screwed on the shaft end of the motor after passing through the tool hole to drive the driving wheel to rotate to a position separated from the firing pin, and the cylinder cover can be opened to be conveniently taken out, so that the complex operation of disassembling the whole machine is avoided.

The utility model is further perfected that the tool hole is provided with a sealing plug, and the shaft end of the motor is provided with a starter groove. This can prevent dust and water.

The utility model is further perfected that the plug head of the sealing plug is connected with the hinge head embedded in the adapting positioning hole on the shell through the connecting belt, thereby preventing the sealing plug from losing after being opened.

The utility model is still further developed in that the removable cylinder head has a pressure relief valve.

Drawings

FIG. 1 is a schematic cross-sectional view of a ladder according to one embodiment of the utility model.

Fig. 2 is a schematic top view of the striker and drive wheel engagement of the embodiment of fig. 1.

Fig. 3 is a schematic bottom view of the embodiment of fig. 1.

Fig. 4 is a schematic view showing a bottom view of the embodiment of fig. 1 in a state of opening the sealing cap.

Fig. 5 is a schematic top view of the embodiment of fig. 1 with the striker disengaged from the drive wheel.

Fig. 6 is a schematic illustration of the striker of the embodiment of fig. 1 shown removed.

Detailed Description

Examples

The basic structure of the fastener driving tool of this embodiment for facilitating the replacement of a hammer is shown in fig. 1 and 2, in which an energy storage mechanism comprising inner and outer cylinders 10, 8 and a piston 9, a striking mechanism comprising a front-end magazine 3 and a retractable gun nozzle 1, a nailing mechanism comprising a hammer 7 connected to the piston 9 and extending toward the magazine, a lifting mechanism comprising a drive wheel 4 driven by a motor 15 engaged with the hammer 7, and a nail feeding mechanism comprising a magazine 2 mounted on one side of the magazine 3 are housed in a housing 6 with a grip 61. The rear ends of the inner and outer cylinders 10, 8 enclose a removable cylinder head 11 with a pressure relief valve 12. The housing 6 between the grip 6.1 and the magazine 2 extends downwards out of the power compartment 6.3, wherein the motor 15 is in driving connection with the drive wheel 4 via the drive gearbox 5. The bottom of the power cabin 6.3 extends out of a connecting handle 6.2 connected with the nail box 2, and the rear side is connected with a battery seat 13 for inserting batteries under the grab handle 6.1. The shell 6 is provided with a tool hole 14 which can be plugged by a rubber sealing plug 14.1 at the position corresponding to the motor shaft end 15.1, and a starter groove is formed on the lower end surface of the motor shaft end 15.1.

Referring to fig. 3 to 6, more particularly, the sealing plug 14.1 comprises a plug head which mates with the tool bore 14 and which is integral with a hinge head 14.2 which engages a mating locating hole in the housing 6 by means of a connecting strap 14.3.

In the standby state shown in fig. 2, the striker is stopped at a position to be disengaged from the drive unit for two purposes: the safety is realized, the front end of the firing pin is stopped at the front end of the nail cap, and in case of accidental firing, nails are not driven out, so that potential safety hazards are reduced; secondly, realize faster beating speed, the drive unit only need rotate very little angle can fire. In the standby state, the striker is not disengaged from the driving wheel, so that the entire driving unit needs to be removed before the striker is removed, which is very troublesome. After the structure of this embodiment is adopted, when the striker 7 needs to be detached, the high-pressure gas in the cylinder is released by means of the pressure release valve 12, then the plug of the sealing plug 14.1 shown in fig. 3 is lifted, the hinge head 14.2 is rotated as shown in fig. 4, the lower end face of the motor shaft end 15.1 is made visible, then the screwdriver is inserted into the starter groove of the motor shaft end 15.1, and the motor shaft end 15.1 is rotated by means of the screwdriver to drive the driving wheel 4 to rotate to the position of disengaging from the striker 7 shown in fig. 5. Then, the cylinder cover 11 is opened, so that the piston and the firing pin 7 can be quite conveniently taken out, finally, the firing pin 7 is directly detached, the operation is easy, the whole machine is not required to be detached, and the maintenance time of the firing pin is greatly reduced. When the striker is jammed due to the presence of the staple, and the motor itself cannot drive the striker, the striker can be pulled back by manually providing a greater torque.

In addition to the embodiments described above, other embodiments of the utility model are possible. All technical schemes formed by equivalent replacement or equivalent transformation fall under the protection scope of the utility model.

Claims (4)

1. The utility model provides a conveniently change fastener of firing pin and beat instrument, includes the casing of taking the grab handle, the storage mechanism that the casing comprises cylinder body and piston, the striking mechanism that comprises the scalable rifle mouth of front end nailing seat, the nailing mechanism that comprises the firing pin that extends towards the nailing seat that is connected with the piston, the elevating system that comprises the drive wheel that meshes with the firing pin transmission, the nail conveying mechanism that comprises the nail casket that installs in nailing seat one side of the casing, the rear end encapsulation of cylinder body can dismantle the cylinder head; the method is characterized in that: the casing is extended downwards to a position between the grab handle and the nail box, a power cabin for arranging the motor and the transmission mechanism is arranged at the position of the casing corresponding to the shaft end of the motor, and a tool hole is formed at the position of the casing corresponding to the shaft end of the motor.

2. The fastener driving tool for facilitating replacement of a striker as set forth in claim 1 wherein: the tool hole is provided with a sealing plug, and the shaft end of the motor is provided with a starter groove.

3. The fastener driving tool for facilitating replacement of a striker as set forth in claim 2 wherein: the plug head of the sealing plug is connected with the hinge head embedded in the adapting positioning hole on the shell into a whole through the connecting belt.

4. A fastener driving tool for facilitating replacement of a striker as set forth in claim 3 wherein: the removable cylinder head has a pressure relief valve.