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Falling Prevention Structure For Socket In Electric Power Tool

An electric tool and detachment prevention technology, which is applied in the field of detachment structure, can solve the problems of supporting parts detachment and sleeve detachment prevention, and achieve the effects of improved reliability, reliable detachment prevention assembly, and simple formation

Inactive Publication Date: 2013-07-17
MAKITA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, there is a concern with the above-mentioned detachment prevention structure that if the threaded member falls off, the support member will fall off from the electric tool, and the sleeve cannot be prevented from detachment.

Method used

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  • Falling Prevention Structure For Socket In Electric Power Tool
  • Falling Prevention Structure For Socket In Electric Power Tool
  • Falling Prevention Structure For Socket In Electric Power Tool

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] Embodiments of the present invention will be described below based on the drawings.

[0024] Figure 1-7 An example of the sleeve detachment prevention structure is shown. Reference numeral 1 denotes an impact screwdriver as an electric tool, and the impact screwdriver 1 includes: a synthetic resin main body case 2 formed by assembling left and right halves of the case 3 and housing a motor; The hammer case 4 made by the system is assembled in the front of the above-mentioned main body case 2 ( figure 1 The right side in the middle), and the main shaft 5, the striking mechanism 6, and the anvil 7 as the output shaft are accommodated as the front housing. The striking mechanism 6 is a well-known structure in which the hammer 8 repeatedly locks and disengages from the anvil 7 as the torque of the anvil 7 increases to strike (impact) in the rotational direction.

[0025] The hammer case 4 is a cylindrical body, and its rear part is inserted into the main body case 2 and...

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PUM

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Abstract

The invention provides a falling prevention structure for a socket in an electric power tool. The falling prevention structure can prevent falling of a support part because of falling of a screw thread part. In an impact driver (1), a supporting ring (16), to which a carabiner (32) and so on of a socket (27) is connected, is provided in a shaft support portion in a front end of a hammer case (4) so that the supporting ring is able to be attached and detached by using a screw (18). Further, a falling prevention element (wire 24) is provided in the supporting ring (16). The falling prevention element (24) comes to a position adjacent to the screw (18) which clamps the supporting ring (16) so that the supporting ring (16) is prevented from falling from the impact driver (1).

Description

technical field [0001] The present invention relates to a structure for preventing a sleeve attached to an output shaft from coming off in an electric tool such as an impact screwdriver. Background technique [0002] In power tools such as impact screwdrivers, sockets are used as the tip tool when tightening bolts and nuts. The sleeve is attached via a bit adapter or the like fitted to an output shaft protruding forward from the housing, or by directly attaching a bit integrally provided to the sleeve to the output shaft. In this case, in order to prevent the socket from falling from the power tool when the socket falls off or the bit breaks, the applicant of the present invention provides a fall-off prevention structure as disclosed in Patent Document 1, for example. This structure is formed such that, in the electric tool, a connecting body such as a shackle (carabiner) that connects the electric tool and the socket is connected to a support member such as a support ring,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B25F5/00B25B21/02
CPCB25B21/02B25B23/00B25F5/02B25D17/08
Inventor 熊谷龙之助平林德夫畔柳贵勇杉本学
Owner MAKITA CORP
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