Hand-held gas spring nail gun

Abstract

The application discloses a handheld gas spring nail gun, which comprises a shell, a gas storage chamber arranged in the shell and forming a gas storage space, a cylinder which is in communication with the gas storage chamber and is used for driving a striking assembly from a top dead center to a bottom dead center, the striking assembly which is partially connected with the cylinder and is capable of reciprocating from the top dead center position to the bottom dead center position and driving a fastener into a workpiece, and a lifting mechanism which is used for moving the striking assembly from the bottom dead center to the top dead center for resetting. The gas storage chamber is provided with a sealing assembly which is tightly attached to the inner wall of the gas storage chamber and is filled in the joint part of the cylinder and the gas storage chamber, so that the cylinder and the gas storage chamber form a sealed space. The port of the cylinder is outwardly folded to form a cylinder flange, the sealing assembly is provided with a sealing flange at the hole opening, and the step of the cylinder flange presses the sealing flange of the sealing assembly to form a seal. The handheld gas spring nail gun can effectively solve the problem of gas leakage of the gas spring nail gun.

Description

Technical Field

[0001] This invention relates to a handheld gas spring nail gun, belonging to the field of power tool technology. Background Technology

[0002] Currently, nail guns on the market can be categorized by their operating principle into gas spring nail guns, spring nail guns, and flywheel nail guns. Gas spring nail guns utilize high-pressure air in a cylinder to propel the firing pin assembly for nailing. However, the air leakage problem in gas spring nail guns has remained largely unresolved. Leakage leads to a drop in cylinder pressure, resulting in insufficient nail-driving force. Consequently, gas spring nail guns often experience performance degradation after a period of use, requiring refilling. Since the cylinder pressure directly affects the nail gun's performance, resolving the sealing issue of the air chamber has always been paramount for gas spring nail gun manufacturers.

[0003] As shown in the patent with publication number US10843318B, traditional airtight components use metal parts to seal the end faces of the air chamber and cylinder. Due to the tolerance of metal parts, air leakage is likely to occur. At the same time, the high density of metal parts will also increase the weight of the nail gun. Summary of the Invention

[0004] The purpose of this invention is to overcome the problems existing in the prior art and provide a handheld gas spring nail gun that can effectively prevent air leakage from the gas storage chamber.

[0005] To solve the above technical problems, the present invention provides a handheld gas spring nail gun, comprising:

[0006] case;

[0007] A gas storage chamber is disposed within the shell and forms a gas storage space;

[0008] A cylinder, which communicates with the air storage chamber, is used to drive the striking assembly from the top dead center to the bottom dead center.

[0009] The striking component is partially connected to the cylinder and can reciprocate from the upper dead center position to the lower dead center position to drive the fastener into the workpiece.

[0010] A lifting mechanism is used to move the striking component from the lower dead center to the upper dead center for reset.

[0011] The gas storage chamber is equipped with a sealing component, which is closely attached to the inner wall of the gas storage chamber and fills the joint between the cylinder and the gas storage chamber, so that the cylinder and the gas storage chamber form a sealed space.

[0012] Furthermore, the port of the cylinder is folded outward to form a cylinder flange, and a sealing flange is provided at the opening of the sealing component. The step of the cylinder flange presses against the sealing flange of the sealing component to form a seal.

[0013] Furthermore, the air storage chamber is located above the cylinder, and the air storage chamber has a parallel cylinder on the side near the handle that is parallel to the cylinder.

[0014] Furthermore, the port of the parallel cylinder is provided with an outwardly folded parallel cylinder boss, and the sealing folded edge near the parallel cylinder is sandwiched between the parallel cylinder boss and the cylinder flange.

[0015] Furthermore, a filler is provided in the gap between the cylinder and the housing, and the sealing flange of the sealing assembly is pressed between the outer step of the cylinder flange and the inner step of the filler.

[0016] Furthermore, the upper end of the air storage chamber is provided with a filling valve for filling compressed air.

[0017] Furthermore, the sealing component is a nitrile rubber seal with a thickness of 1-2 mm.

[0018] Compared with the prior art, the present invention has the following beneficial effects: the present invention can effectively prevent cylinder leakage while reducing the weight of the nail gun and reducing costs. Attached Figure Description

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The drawings are provided for reference and illustration only and are not intended to limit the present invention.

[0020] Figure 1 This is the front view of the present invention;

[0021] Figure 2 for Figure 1 A sectional view;

[0022] Figure 3 for Figure 1 A magnified view of a portion of the image;

[0023] In the diagram: 1. Housing; 2. Gas chamber; 2-1. Parallel cylinder; 2-2. Parallel cylinder boss; 3. Cylinder; 3-1. Cylinder flange; 4. Striking assembly; 5. Lifting mechanism; 6. Sealing assembly; 6-1 Sealing flange; 7. Filling valve; 8. Filler; 9. Handle. Detailed Implementation

[0024] In the following description of the present invention, the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not mean that the device must have a specific orientation.

[0025] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below with reference to specific illustrations.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention.

[0027] like Figures 1 to 3 As shown, the handheld gas spring nail gun of the present invention includes: a housing 1, an air storage chamber 2, a cylinder 3, a striking assembly 4, and a lifting mechanism 5; the extreme position of the cylinder 3 compression is defined as the upper dead point, and the position when the fastener is fired is defined as the lower dead point.

[0028] An air storage chamber 2 is located inside the housing 1, communicating with the cylinder 3 to form an air storage space; the port of the cylinder 3 is connected to the air storage chamber 2, used to drive the striking component 4 from the upper dead center to the lower dead center. The striking component 4 is partially connected to the cylinder 3, and can reciprocate from the upper dead center to the lower dead center to drive the fastener into the workpiece.

[0029] The lifting mechanism 5 is driven by a motor and is used to move the striking component 4 from the lower dead center to the upper dead center for resetting. A sealing component 6 is provided inside the air storage chamber 2. The sealing component 6 is tightly attached to the inner wall of the air storage chamber 2 and fills the joint between the cylinder 3 and the air storage chamber 2, forming a sealed space between the cylinder 3 and the air storage chamber 2. A filling valve 7 for filling compressed air is provided at the upper end of the air storage chamber 2.

[0030] The port of cylinder 3 is folded outward to form cylinder flange 3-1, and a sealing flange 6-1 is formed at the opening of sealing component 6. The lower end face of cylinder flange 3-1 presses against sealing flange 6-1 to form a seal. The sealing component 6 is made of nitrile rubber with a thickness of 1-2 mm.

[0031] The air chamber 2 is located above the cylinder 3. On the side of the air chamber 2 near the handle 9, there is a parallel cylinder 2-1 parallel to the cylinder 3. The parallel cylinder 2-1 has an outwardly folded parallel cylinder boss 2-2. The sealing folded edge 6-1 near the parallel cylinder 2-1 is clamped by the parallel cylinder boss 2-2 and the cylinder flange 3-1.

[0032] The sealing flange near the housing 1 is filled by a filler 8 between the housing 1 and the cylinder 3, which is pressed between the outer step of the cylinder flange 3-1 and the inner step of the filler 8. The filler 8 can be made of rubber, which can both buffer and dampen vibration, and also press the sealing assembly 6 to prevent high-pressure gas leakage.

[0033] The above description is merely a preferred embodiment of the present invention, showing and describing the basic principles, main features, and advantages of the present invention. It is not intended to limit the scope of patent protection of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. In addition to the above embodiments, the present invention may have other implementations without departing from the spirit and scope of the invention. Various changes and modifications to the present invention are possible, and all technical solutions formed by equivalent substitutions or equivalent transformations fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents. Technical features not described in the present invention can be implemented by or using existing technology, and will not be elaborated here.

Claims

1. A handheld gas spring nail gun, characterized in that, include: case; A gas storage chamber is disposed within the shell and forms a gas storage space; A cylinder, which communicates with the air storage chamber, is used to drive the striking assembly from the top dead center to the bottom dead center. The striking component is partially connected to the cylinder and can reciprocate from the upper dead center position to the lower dead center position to drive the fastener into the workpiece. A lifting mechanism is used to move the striking component from the lower dead center to the upper dead center for reset. The gas storage chamber is equipped with a sealing component, which is in close contact with the inner wall of the gas storage chamber and fills the joint between the cylinder and the gas storage chamber, so that the cylinder and the gas storage chamber form a sealed space. The port of the cylinder is folded outward to form a cylinder flange, and a sealing flange is provided at the opening of the sealing component. The step of the cylinder flange presses against the sealing flange of the sealing component to form a seal. The gas storage chamber is located above the cylinder, and the gas storage chamber has a parallel cylinder on the side near the handle that is parallel to the cylinder. The port of the parallel cylinder is provided with an outwardly folded parallel cylinder boss, and the sealing folded edge near the parallel cylinder is sandwiched between the parallel cylinder boss and the cylinder flange.

2. The handheld gas spring nail gun according to claim 1, characterized in that: A filler is provided in the gap between the cylinder and the housing, and the sealing flange of the sealing assembly is pressed between the outer step of the cylinder flange and the inner step of the filler.

3. The handheld gas spring nail gun according to claim 1, characterized in that: The upper end of the gas storage chamber is equipped with a filling valve for filling compressed air.

4. The handheld gas spring nail gun according to claim 1, characterized in that: The sealing component is a nitrile rubber seal with a thickness of 1-2 mm.

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