CN219132200U

CN219132200U - Quick-release fastener striking tool

Info

Publication number: CN219132200U
Application number: CN202320012541.0U
Authority: CN
Inventors: 王爱国; 周其笑; 常凤智
Original assignee: Nanjing Toua Hardware & Tools Co ltd
Current assignee: Nanjing Toua Hardware & Tools Co ltd
Priority date: 2023-01-04
Filing date: 2023-01-04
Publication date: 2023-06-06
Anticipated expiration: 2033-01-04

Abstract

The utility model relates to a quick-dismantling type fastener beating tool, and belongs to the technical field of tools. The tool comprises a cylindrical main body, a cylinder and a shell, wherein the cylindrical main body supports the cylinder and extends out of a holding part; the front part of the shell is provided with a lifting mechanism and a nailing seat extending out of the gun nozzle; the piston in the cylinder is fixedly connected with a firing pin extending forward to the nailing seat, and the firing pin is in transmission connection with the lifting mechanism; the rear end of the shell is fixedly connected and closed through a rear cover with an air tap cap window in the middle, the rear end of the cylinder is screwed with a cylinder cover with an air tap extending out of the middle in a sealing way, and the air tap is screwed with the air tap cap. After the structure of the utility model is adopted, when the striker needs to be maintained and replaced, the air nozzle cap is unscrewed through the air nozzle cap window of the rear cover of the shell, the air pressure possibly existing in the air cylinder is released, the rear cover is detached, the cylinder cover is unscrewed, and the striker is safely and conveniently detached from the rear end together with the piston.

Description

Quick-release fastener striking tool

Technical Field

The utility model relates to a fastener beating tool, in particular to a quick-dismantling fastener beating tool, and belongs to the technical field of tools.

Background

When the fastener beating tool 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 fastener beating tool is a tool commonly used in industries such as construction, decoration and the like, and the typical structure is disclosed in Chinese patent documents of patent number 201690000852.3 and name pile drivers, and comprises the striker for applying driving force; a piston operable with the striker; a compression chamber for operating the piston by air pressure; a cylinder tube for guiding the motion of the piston; a housing for accommodating the cylinder; a holder provided in the housing and supporting the cylinder tube radially outside; a repeating portion formed by overlapping the arrangement region of the retainer and the arrangement region of the cylinder in the center axis direction of the cylinder; and a first buffer interposed between the holder and the housing and disposed radially outward of the repeating portion.

During use, a consumable part, such as a firing pin assembly, requires maintenance replacement. Since the prior art fastener driving tools have long adopted a structure in which a piston and a striker are fitted into a cylinder from the front, when a wearing part is replaced, it is necessary to open a housing, remove the cylinder, and replace the striker from the front. In the process, a plurality of special tools are needed for disassembling the shell, taking out the cylinder barrel and recovering after replacing the firing pin, and the process is very troublesome; in addition, when the striker is detached, the original pressure is kept in the cylinder barrel, the possibility of explosion exists, and safety is difficult to ensure.

To address this problem, U.S. patent application publication No. US20220355460 discloses a gas spring type fastener striking tool that can be opened to facilitate maintenance of the end cap. Although the technical scheme can solve the trouble of replacing the striker from the front through the detachable structure of the rear end cover, the following defects exist: 1) The cylinder cover is directly exposed, and once the conditions of fracture, loosening of fastening screws and the like occur, the cylinder cover can fly out to cause injury; 2) The valve is exposed and is easy to be blocked by ash. In addition, the nailing seat at the front part is inconvenient to assemble and disassemble.

Disclosure of Invention

The utility model aims at: aiming at the defects existing in the prior art, through structural improvement, the quick-dismantling type fastener striking tool is provided, and is convenient and quick to replace vulnerable parts and capable of enhancing safety.

In order to achieve the above purpose, the basic technical scheme of the quick-release fastener striking tool of the utility model is as follows: a housing including a cylindrical main body supporting the cylinder and extending out of the grip portion; the front part of the shell is provided with a lifting mechanism and a nailing seat extending out of the gun nozzle; the piston in the cylinder is connected with a firing pin extending forward to the nailing seat, and the firing pin is in transmission connection with the lifting mechanism;

the rear end of the shell is fixedly connected and closed through a rear cover with an air tap cap window in the middle, and the rear end of the cylinder is in sealing screwing with a detachable cylinder cover;

the rear end of the cylinder is in sealing screwing with a cylinder cover of which the middle part extends out of the inflating valve.

After the utility model is adopted, when the firing pin needs to be maintained and replaced, the air nozzle cap is unscrewed through the air nozzle cap window of the rear cover of the shell, the air pressure possibly existing in the air cylinder is released, the rear cover is detached, the cylinder cover is unscrewed, and the firing pin is conveniently detached from the rear end together with the piston under the condition of ensuring safety.

The utility model is further perfected as follows: the cylinder body supports a composite cylinder consisting of an outer cylinder body and an inner cylinder body, and the inflating valve is screwed with the air tap cap.

The utility model is still further perfected as follows: the front end of the inner cylinder body is provided with a supporting ring matched with the inner hole of the outer cylinder body, the rear end of the inner cylinder body is provided with a diameter-reducing section matched with the inner diameter of the cylinder bracket ring, and the inner cylinder body is installed in the outer cylinder body by means of a front supporting structure and a rear supporting structure during assembly.

The utility model is further perfected as follows: the front part of the cylinder support ring is a supporting ring with the outer diameter matched with the inner hole of the outer cylinder body, reinforcing ribs are circumferentially distributed at intervals in the inner part, and the rear end of the cylinder support ring is in a zigzag shape with axial reinforcing ribs at the outer side.

The utility model is further perfected as follows: the periphery of the air tap cap window forms a window cover concave, the two sides of the window cover concave, which are positioned on the air tap cap window, are respectively provided with a buckle hole, a window cover piece which is matched with the window cover piece in shape is covered in the window cover concave, and the inner surface of the window cover piece is provided with a buckle convex which is matched with the buckle holes.

The utility model is further perfected as follows: a vibration damping gasket is lined between the rear cover and the cylinder cover.

The utility model is still further perfected as follows: the front end of the shell is provided with a nailing seat with a gun nozzle by means of a fastening screw, and a tapered conical front cover is arranged on the outer cover of the nailing seat.

Drawings

Fig. 1 is a schematic structural view of an embodiment of the present utility model.

Fig. 2 is a schematic cross-sectional view of the embodiment of fig. 1.

FIG. 3 is a schematic view of the cross-sectional A-A configuration of the embodiment of FIG. 1.

Fig. 4 is a schematic exploded perspective view of the rear portion of the embodiment of fig. 1.

Fig. 5 is a schematic perspective view of the embodiment of fig. 1.

Fig. 6 is a schematic perspective view of the open cylinder of the embodiment of fig. 1.

Fig. 7 is a schematic perspective exploded view of the front portion of the embodiment of fig. 1.

Detailed Description

The basic structure of the quick release fastener driving tool (also called a nailer) of this embodiment is shown in fig. 1, 2 and 3: the cylindrical main body of the shell 8 supports a composite cylinder consisting of the outer cylinder body 4 and the inner cylinder body 5, and extends downwards to form a holding part 15 for inserting the battery pack at the bottom. The front part of the cylindrical main body of the casing 8 is provided with a lifting mechanism 9 driven by a motor 14 and a nailing seat 10 extending out of a gun nozzle 12. The nail box 11 is arranged at the lower part of the nailing seat 10. The piston in the inner cylinder body 5 of the cylinder is fixedly connected with a firing pin 6 extending forward to the nailing seat, the front end of the inner cylinder body 5 is provided with a buffer block 7, and one side of the firing pin 6 is provided with meshing teeth in transmission connection with a power wheel in a lifting mechanism 9. The specific structure and the action mechanism are similar to the prior art, and detailed description is not expanded.

As shown in fig. 4, the rear end opening of the housing 8 is closed by the fastener-capping rear cover 2. The middle part of back lid 2 has air cock cap window 2.3, and air cock cap window 2.3's periphery forms window lid concave 2.1, and window lid concave 2.1 is located air cock cap window 2.3's both sides and is equipped with buckle hole 2.2 respectively, covers into in window lid concave 2.1 and its shape adaptation's window cover piece 19, and the internal surface of window cover piece 19 has the protruding 19.1 of buckle that matches with buckle hole 2.2, therefore will cover air cock cap window 2.3 at the user state window cover piece.

The front end of the inner cylinder body 5 of the air cylinder is provided with a supporting ring 5.1 matched with the inner hole of the outer cylinder body 4, the rear end is provided with a reducing section 5.2 matched with the inner diameter of the cylinder bracket ring 3, and the air cylinder is installed in the outer cylinder body 4 by means of a front supporting structure and a rear supporting structure during assembly. The front part of the cylinder bracket ring 3 is a supporting ring 3.1 with the outer diameter matched with the inner hole of the outer cylinder body 4 and with the inside provided with circumferential spacing reinforcing ribs 3.4, and the rear end is provided with saw-tooth-shaped 3.3 with the outside provided with axial reinforcing ribs 3.2, thus the weight can be reduced, and the reduction of the airflow circulation resistance is facilitated. The rear end of the outer cylinder body 4 is provided with an internal thread which is in sealing screwing with an external thread of the cylinder cover 16 of which the middle part is provided with an extension valve 16.1, the structure of the valve 16.1 is similar to that of a vehicle charging nozzle, and the external thread is in screwing with the internal thread of the air tap cap 1. A damping washer 17 is lined between the rear cover 2 and the cylinder head 16.

When the firing pin needs to be disassembled, the firing pin is moved to the firing position, the window cover plate is pulled out, the air tap cap is screwed out from the air tap cap window, the air tap on the air tap cap is deflated, the rear cover of the shell is disassembled to expose the air cylinder cover, the air cylinder cover is disassembled by virtue of the screwing tool, and the firing pin is pushed backwards from the mouth end of the gun, so that the piston and the firing pin can be conveniently taken out. If the inner cylinder body needs to be further taken out, after the firing pin is removed, the cylinder support is firstly taken out in a ring-back mode, and then the inner cylinder body can be pulled out in a back mode. And the process of reloading is reverse. Is safe and convenient.

In addition, as shown in fig. 7, the front end of the housing 8 of the quick release fastener driving tool of the present embodiment is mounted with a nailing seat 10 with a gun nozzle 12 by means of a fastening screw, and the nailing seat 10 is covered with a tapered conical front cover 12. When the nailing seat needs to be detached, the nail box is detached firstly, then the front cover is detached, and then the fastening screw is detached, so that the whole nailing seat can be detached, and the nailing seat is quite convenient and safe.

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

Claims

1. A quick-release fastener striking tool comprises a shell, a cylinder, a handle and a fastener driving device, wherein the shell is provided with a cylinder body and a holding part; the front part of the shell is provided with a lifting mechanism and a nailing seat extending out of the gun nozzle; the piston in the cylinder is connected with a firing pin extending forward to the nailing seat, and the firing pin is in transmission connection with the lifting mechanism; the method is characterized in that:

2. The quick release fastener driving tool as defined in claim 1 wherein: the cylinder body supports a composite cylinder consisting of an outer cylinder body and an inner cylinder body, and the inflating valve is screwed with the air tap cap.

3. The quick release fastener driving tool as defined in claim 2 wherein: the front end of the inner cylinder body is provided with a supporting ring matched with the inner hole of the outer cylinder body, the rear end of the inner cylinder body is provided with a diameter-reducing section matched with the inner diameter of the cylinder bracket ring, and the inner cylinder body is installed in the outer cylinder body by means of a front supporting structure and a rear supporting structure during assembly.

4. A quick release fastener driving tool as defined in claim 3 wherein: the front part of the cylinder support ring is a supporting ring with the outer diameter matched with the inner hole of the outer cylinder body, reinforcing ribs are circumferentially distributed at intervals in the inner part, and the rear end of the cylinder support ring is in a zigzag shape with axial reinforcing ribs at the outer side.

5. The quick release fastener driving tool as defined in claim 4 wherein: the periphery of the air tap cap window forms a window cover concave, the two sides of the window cover concave, which are positioned on the air tap cap window, are respectively provided with a buckle hole, a window cover piece which is matched with the window cover piece in shape is covered in the window cover concave, and the inner surface of the window cover piece is provided with a buckle convex which is matched with the buckle holes.

6. The quick release fastener driving tool as defined in claim 5 wherein: a vibration damping gasket is lined between the rear cover and the cylinder cover.

7. The quick release fastener driving tool as defined in claim 6 wherein: the front end of the shell is provided with a nailing seat with a gun nozzle by means of a fastening screw, and a tapered conical front cover is arranged on the outer cover of the nailing seat.