Abstract: An integrated module of a cylinder and reversing assembly of a reciprocating pneumatic tool is arranged between an air pressure control module and a guide outlet of a piston rod in a groove of the reciprocating pneumatic tool. The integrated module has a cylindrical body, an air pressure guiding seat positioned in the cylindrical body, a reversible actuating slot recessed into the seat body, a reversing brake block movably positioned into the reversible actuating slot, and a partition board fixedly assembled between the seat body and the cylindrical body.

Abstract: In a cylinder dividing mechanism of a pneumatic tool, the first and second air pressure driving spaces are formed in the chamber, the first and second external channels are set externally on the circumferential wall, the first external channel is connected with the first air intake and air intake/exhaust dividing controller, and the second external channel is connected with the second air intake and air intake/exhaust dividing controller. As such, a single chamber is provided with two air pressure driving spaces for synchronous compression and driving of the rotor. The driving torsion for the pneumatic tool could be multiplied without need of increasing the volume of the chamber of the cylinder to cater for the need of the users with improved applicability.

Abstract: In a cylinder dividing mechanism of a pneumatic tool, the first and second air pressure driving spaces are formed in the chamber, the first and second external channels are set externally on the circumferential wall, the first external channel is connected with the first air intake and air intake/exhaust dividing controller, and the second external channel is connected with the second air intake and air intake/exhaust dividing controller. As such, a single chamber is provided with two air pressure driving spaces for synchronous compression and driving of the rotor. The driving torsion for the pneumatic tool could be multiplied without need of increasing the volume of the chamber of the cylinder to cater for the need of the users with improved applicability.

Abstract: A reciprocating pneumatic tool has an integrated module of a cylinder and flow reversing assembly. The tool allows the reversible actuating slot to be recessed integrally onto the air pressure guiding seat. The air pressure guiding seat is separated from the cylinder body via a partition board. Compared with the prior art, the partition board, air pressure guiding seat's assembly end surface and cylinder body's inner assembly end can be grinded precisely to realize accurate fitness of various components. The partition board of a planar sheet permits very easy and precise grinding, so the integrated module of cylinder and flow reversing assembly enables simplification of the processing and mass production, reduction of the fabrication/processing cost, and shortening of the assembly time and minimization of the defect with better applicability and industrial benefits.

Abstract: A pneumatic tool percussion hammer features motion ends of the percussion block of the percussion hammer with added configuration of a mass increasing part. The mass increasing part can help to increase the mass of the motion ends of the percussion block without increasing the overall size of the percussion block. Hence, the present invention can effectively increase the inertia force of the percussion block in motion, and consequently the torsion and instant acceleration of the percussion hammer, without the need to increase the overall size of the percussion hammer.

Abstract: An impact hammer with pre-pressing damping and buffering effect includes a handle, outer barrel, air inlet, internal slide, actuating cylinder, air flow switching module and air inlet coupling portion. A front damper is assembled between the front end of the internal slide and the front end wall of the holding space and is characterized by a two-section pre-pressing rear damper assembled between the rear end of the internal slide and the rear end wall of the holding space. The two-section pre-pressing rear damper includes superposed upper and lower elastic buffers. At least the lower elastic buffer is pressed by a pre-pressing member to the preset degree. When the impact hammer yields recoil force under the impaction of the piston, the pre-pressing rear damper is employed to realize stronger buffering effect, so that the impact force is not much affected, thereby improving the impact efficiency and yielding excellent buffering effect.

Abstract: A reciprocating pneumatic tool has a main tool body, a suspension internal slider and a rear damping spring. A front buffer air chamber is formed the main tool body and the suspension internal slider. A by-pass air supply passage is set into the cylinder wall of the main tool body and is arranged at interval with the hollow chamber along its extension. Both ends of the by-pass air supply passage have a first and a second venting end. The first venting end is linked to the air control valve chamber of the air pressure control module, and the second venting end is linked to the front buffer air chamber. Air pressure passing through air control valve chamber can be guided the through by-pass air supply passage, so the front buffer air chamber accumulates air pressure to generate a damping effect on the front end of the suspension internal slider.