Electric tool
Technical field
The utility model is relevant with electric tool, is meant a kind of electric tool that can smooth and easy adjustment knob especially.
Background technology
Press, known electric tool with outputting torsion size adjusting function such as electric screw driver etc., usually the adjustment knob that has a dome-shaped is incorporated in rotating mode on the housing of this electric tool, can set the maximum outputting torsion value of this electric tool by rotating this knob.
In order to locate the position of this knob, interior all side wall surfaces of this knob are provided with most locating slots, and are provided with two Location resilient pieces between the housing of this knob and this electric tool or other member; This two Location resilient piece respectively has a protuberance and is resisted against in the locating slot at this knob relative position place, and thus, the operator must impose the rotatory force that is enough to overcome this two Location resilient piece on this knob, could rotate this knob.
The protuberance of above-mentioned Location resilient piece is to be resisted against in the locating slot of this knob with the power radially with respect to this knob respectively, so can cause this knob having some setbacks on rotating; Again, this two Location resilient piece is to be set at respectively on two diverse locations of this electric tool, therefore assembles comparatively because of difficulty.
The utility model content
Main purpose of the present utility model is to provide a kind of electric tool, and its assembling is comparatively easy.
Another purpose of the present utility model is to provide a kind of electric tool, and turning knob is comparatively smooth and easy.
In view of this, the utility model is that a kind of electric tool is provided, and it is characterized in that, includes:
One casing;
One electro-motor is to be located in this casing, and its output shaft is provided with a gear;
One battery is removably to be incorporated on this casing;
One switch is to be fixedly arranged on this casing, and electrically connects with this battery and this electro-motor respectively, with conducting or block this battery and this electro-motor between electric connection;
One speed change and outputting torsion control device, be to be located in this casing, it includes an accommodating body, one group of planetary gearsets and a rotating disk, wherein, this accommodating body has one and is the cylindric joint portion that holding part cylindraceous and axially is connected in this holding part one end, along having an external screw thread on the outside wall surface of this joint portion; This planetary gearsets is to be arranged in this joint portion, and is connected with the gear of this electro-motor; In addition, this planetary gearsets has an output shaft and stretches out this joint portion; This rotating disk central part has a perforation, has an internal thread on the hole wall of this perforation and is incorporated on the external screw thread of this joint portion, rotates this rotating disk this rotating disk is moved on this joint portion; In addition, this rotating disk has most engagement grooves of arranging along its periphery;
One adjusts knob, be one to be lid cylindraceous and to have a body portion cylindraceous and a roof, and these roof central authorities has a circular open; Have many helping on this body portion internal face, and have the convex cone that majority is the radiation-like arrangement on the internal face of this roof, and form a locating slot between each two these convex cone in conjunction with protruding; This adjustment knob is to be incorporated on this casing in the mode of rotating, and it is to be embedded in respectively in the engagement groove of this rotating disk in conjunction with protruding helping;
Positioning piece, through being stamped to form, it has a socket part with metal sheet, is socketed on the joint portion of this accommodating body; Two location divisions are the two opposite side ends that are connected in this socket part, and respectively this location division has a protuberance, and this two protuberance is to be resisted against respectively in the locating slot at opposite position place on this adjustment knob.
The beneficial effects of the utility model are:
Electric tool of the present utility model, its assembling is comparatively easy, and turning knob is comparatively smooth and easy.
Description of drawings
For further specifying concrete technology contents of the present utility model, after being described in more detail in below in conjunction with embodiment and accompanying drawing, wherein:
Fig. 1 is the three-dimensional exploded view of the utility model one preferred embodiment.
Fig. 2 is the part member front view in embodiment illustrated in fig. 1.
Fig. 3 is the part member assembling view in embodiment illustrated in fig. 1.
The specific embodiment
Seeing also Fig. 1 to shown in Figure 3, is the electric tool 100 that the utility model provides a preferred embodiment, and it includes:
One casing 10 is by 11 of two housings and connect and form.
One electro-motor 20 is to be located in this casing 10, and its output shaft is provided with a gear 21.
One battery 30 is removably to be incorporated on this casing 10.
One switch 40 is to be fixedly arranged on this casing 10, and electrically connects with this battery 30 and this electro-motor 20 respectively, but with conducting or block this battery 30 and the electric connection of 20 of this electro-motors.
One speed change and outputting torsion control device 50 are to be located in this casing 10, and it includes an accommodating body 51, one group of planetary gearsets (not shown) and rotating disk 52; Wherein, this accommodating body 51 has one and is the cylindric joint portion 512 that holding part 511 cylindraceous and axially is connected in these holding part 511 1 ends, along having an external screw thread 513 on the outside wall surface of this joint portion 512; This planetary gearsets is to be arranged in this joint portion 512, and is connected with the gear 21 of this electro-motor 20; In addition, this planetary gearsets has an output shaft 53 and stretches out this joint portion 512; These round turntable 52 central parts have a perforation 521, has an internal thread (not shown) on the hole wall of this perforation 521 with on the external screw thread that is incorporated into this joint portion 512, by rotating this rotating disk 52 this rotating disk 52 is moved on this joint portion 512, and adjust the maximum outputting torsion of this electric tool 100 thus; In addition, this rotating disk 52 has most engagement grooves of arranging along its periphery 522.
One adjusts knob 60, be one to be lid cylindraceous and to have a body cylindraceous portion 61 and a roof 62, and these roof 62 central authorities has a circular open 621 (as shown in Figure 2); What have majority on these body portion 61 internal faces helps 611 in conjunction with protruding, and has the convex cone 622 that majority is the radiation-like arrangement on the internal face of this roof 62, and 622 of each two these convex cones form a locating slot 623; This adjustment knob 60 is to be incorporated on this casing 10 in rotary mode, and it helps 611 to be to be embedded in respectively in the engagement groove 522 of this rotating disk 52 in conjunction with protruding, can drive this rotating disk 52 and rotates on the joint portion 512 of this accommodating body 51 to rotate this adjustment knob 60;
Positioning piece 70, be with metal sheet through being stamped to form, it has a socket part 71, is to be socketed on the joint portion 512 of this accommodating body 51; Two location divisions 72 are the two opposite side ends that are connected in this socket part 71, and respectively this location division 72 has a protuberance 721, and this two protuberance 721 is to be resisted against respectively in the locating slot 623 at opposite position place on this adjustment knob 60 (as shown in Figure 3).
Thus, the utility model is by the keeper design of single-piece, can improve the not easy-to-assemble shortcoming of Location resilient piece of known electric tool, and because the protuberance of this keeper is to be resisted against in the locating slot of this knob with the axial force with respect to this knob respectively, rather than radial load, thereby can improve the shortcoming that the knob of existing electric tool has some setbacks.