Pneumatic Nailing Gun Locking Block for Air Leakage Prevention
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Solution Overview
Problem
The stability of pneumatic nailing guns is compromised due to air leakage caused by deformation of the second piston at the contact position on the air cylinder wall, resulting in insufficient nail shooting force and reduced nailing gun stability.
Innovation Solution
A pneumatic nailing gun design featuring a locking block with a sliding groove and ejector rod system, where the ejector rod abuts against multiple bayonets and a moving groove, ensuring stable movement of the first piston by evenly distributing the upward pushing force, thus maintaining the sealing integrity of the air cavity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the unlocking ejector rod penetrates through a through hole to abut against a pushing inclined plane, then the fastener assembly moves downward, but the fastener elastic member subjects the fastener to an upward elastic force, causing the second piston to deform at the contact position on the air cylinder wall, resulting in air leakage and insufficient nail shooting force
Solution Approach 1:
The patent introduces a pushing block as an intermediary component between the ejector rod and the fastener assembly. The pushing block receives the upward pushing force from the ejector rod and transfers it to the fastener assembly in a controlled manner, preventing direct contact between the ejector rod and the air cylinder wall that would cause piston deformation. This intermediary structure resolves the contradiction by enabling smooth unlocking operation while preventing the harmful elastic force from deforming the second piston.
2Power
If the second piston is fixed to compress air in the communication space, then high-pressure gas is generated to drive the firing pin, but the piston connected with the firing pin remains fixed using a fastener assembly that may deform under elastic force
Solution Approach 1:
The pushing block serves as a mediator that protects the second piston from direct exposure to large elastic forces. When the ejector rod pushes the fastener assembly downward, the pushing block absorbs and distributes this force, preventing the elastic member from exerting excessive upward force on the piston. This allows the piston to maintain its sealing function and structural integrity while still enabling the high-pressure gas generation needed for nail shooting.
Solution Approach 2:
The pushing block acts as a cushioning element that anticipates and absorbs the elastic rebound force before it can damage the second piston. By positioning the pushing block between the ejector rod and the piston, the system pre-empts the harmful elastic force from causing deformation, thereby maintaining piston strength and sealing integrity throughout the compression and firing cycles.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design ensures stable and smooth movement of the first piston, enhancing the nailing stability and nail shooting force by preventing air leakage, thereby improving the overall performance of the nailing gun.
Implementation Method 1
when the fastener moves downward, the fastener elastic member subjects the fastener to an upward elastic force
Implementation Method 2
High-pressure gas drives a firing pin in an air cylinder of the nailing gun to perform a hammering motion
Implementation Method 3
the first piston moves upward to drive the unlocking ejector rod to move upward, the unlocking ejector rod pushes the fastener assembly to be separated from the second piston
Implementation Method 4
the second piston moves downward under an air pressure to make the firing pin hit the nail
Data Source
AI summary
Disclosed is a pneumatic nailing gun. According to the pneumatic nailing gun, an end cover is provided with a locking seat, a locking block is slidably connected in a sliding groove, a moving end of the locking block abuts against an elastic member located at an end portion of the sliding groove, a locking end of the locking block is capable of abutting against a locking member and limiting the movement of the locking member, the locking block is further provided with an open groove, a first piston is provided with an ejector rod, the locking seat is provided with a first bayonet allowing the ejector rod to enter, the ejector rod includes a jacking end and an abutting end arranged on a side edge of the jacking end, the locking seat is further provided with a second bayonet.