Movable electric tool

Abstract

The present invention provides a mobile power tool which is compact and has high reliability. This mobile power tool is provided with a motor 1, a driving transmission section 2 for transmitting the driving power of the motor 1 to the output section 3, a mounting rack for supporting the driving transmission section 2, a body housing 5 for covering the motor 1 and maintaining the mounting rack, and a tubular cover 4 for covering and rotatablely supporting the output section 3. Furthermore, by fitting the body housing 5 and the driving section cover 4 so that the internal space of the two can communicate in the mobile power tool, wherein the body housing 5 is provided with an advance or retreat engaging section of the driving section cover for constraining the advance or retreat movement of the driving section cover 4 by being engaged with the driving section cover 4, and a rotational engaging section of the diving section cover for constraining the rotational movement of the driving section cover 4 by being engaged with the driving section cover 4.

Description

technical field [0001] The present invention relates to a mobile electric tool used for various fastening work, drilling work, cutting work and the like. Background technique [0002] Fig. 9 shows a conventional portable electric tool. The mobile electric tool is, for example, a hand-held impact screwdriver. As shown in FIG. 10, a drive motor 101 is arranged inside it; driving force; an output shaft 103 connected to the drive transmission part 102 to transmit the driving force from the drive transmission part 102 ; In this electric tool, a cylindrical metal case 104 constitutes a housing for supporting the output shaft 103 or the drive transmission part 102 so as to resist a large load generated by the drive transmission part 102. 104 is fixed on the main body casing 105 holding the motor 101 by screws. The above-mentioned screw fixing is realized by inserting and fastening the fixing screws 108 into the screw fixing portions 106 and 107 protruding from the outer shell su...

AI Technical Summary

Problems solved by technology

[0004] However, as mentioned above, in the scheme of screwing the housing 104 into the main body shell 105, in order to form a good assembly, it is necessary to ensure a gap between the male thread part and the female thread part of the screw-in part. , the gap becomes the cause of looseness

In order to prevent looseness, it is conceivable to engage multiple racks around the entire circumference of the case 104, but in this case, the overall shape will be enlarged, the number of parts will increase, and the assemblability will decrease.

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