JPS5845880A - Electric hammer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electric hammer in which an empty sword chamber C is compressed and expanded by the reciprocating movement of a piston, and a striking member performs reciprocating movement accordingly.

Conventionally, there was a sword hammer of this type as shown in Figure 1. In Figure 1, (1) is the hammer cover, (
2? Fi rotary motor attached to this cover (1),
(8a), (81)) F! Reduction gear, (4a), (4
b) is a bearing that supports the reduction gears (8a) and (8b); (5) is an eccentric shaft that converts rotational motion into reciprocating motion;
(6) is a piston, (4C) is an axial bearing that supports piston (6), (7) is an air chamber, and (8) is an air chamber that is compressed and expanded by the reciprocating motion of piston (6) ()) (g) is a motor (
It is a 2.1 power switch.

Next, the operation will be explained.

When the switch (9) is turned on, the motor (2) rotates, the multi-rotation is reduced by the reduction gears (8a) and (8b), and the multi-rotation motion is converted into reciprocating motion by the eccentric shaft (5). Inform the piston (6). Further, due to the reciprocating movement of the piston (6), the air in the air chamber (7) is compressed and expanded, and the striking element (8) performs a reciprocating movement as the piston (6) moves back and forth.

Conventional electric sword hammers are constructed as described above, and are inefficient because they include a mechanism that converts rotational motion into reciprocating motion, and also require a conversion device such as an eccentric rod to convert rotary motion into reciprocating motion. There were drawbacks such as the need for

This invention has been made in order to eliminate the drawbacks of the conventional ones as described above, and improves efficiency by directly reciprocating or installing a near motor instead of a rotary motor. The purpose of this invention is to provide a small and lightweight chamber hammer that does not require a conversion device M such as an eccentric rod.

An embodiment of the present invention will be described below with reference to FIG.

In FIG. 2, αd) is a near motor that directly drives the piston (6) in a reciprocating manner, and (6) is a resonant spring attached to the rear end of the piston (6).

Next, its effect will be explained.

The piston (6) is reciprocated by the linear motor α0), and the displacement of the piston is increased by the action of the resonance spring (11). And this reciprocating motion of the piston (
6) The striking element (8) reciprocates as the air chamber (7) compresses, expands, and warps.

As described above, according to the present invention, the linear motor that performs direct reciprocating motion is ground, and the displacement of the motion is increased by the action of the resonant spring, resulting in high efficiency and light weight.

[Brief explanation of drawings]

FIG. 1 is a sectional side view showing a conventional Ct sword hammer. FIG. 2 is a sectional side view showing an embodiment of the present invention. In the figure, (1) is the cover, (6) is the piston, (7) is the empty chamber, (8) is the striker, (9) is the power switch, (g) the beam near motor, and 0]) is the resonance spring. . In addition, in the figures, the same numbers indicate the same or equivalent parts. Agent Shin Kuzuno −

Claims (2)

[Claims] (1) An electric sword hammer in which a striking element reciprocates through an air chamber in conjunction with the reciprocating movement of a piston, characterized in that the piston is built into a cover or connected to a near motor. (2) The soft carbon hammer according to claim 1, wherein a resonance spring is attached to the rear end of the piston.