TWM580496U - Power tool - Google Patents

Abstract

The present invention relates to a power tool comprising: a body; a rotor rotatably disposed in the body; a spindle axially coupled to the rotor; and a rotation limiting mechanism including a first one disposed on the spindle a restriction portion, at least one restriction member movable relative to the first restriction portion, an elastic member coupled to the at least one restriction member, and at least one control member disposed on the body, the at least one restriction member being provided with the first a restriction portion is engaged with the second restriction portion, and the at least one control member is operable to lock the at least one restriction member to lock or release the at least one restriction member in a locking position or a release position; wherein, when the at least one restriction member When the control member is in the locked position, the second restricting portion is not engaged with the first restricting portion and the spindle is freely rotatable; when the at least one controlling member is operated from the locking position to the releasing position, The at least one control member releases the at least one restriction member, and the elastic member pushes the at least one restriction member such that the second restriction portion is moved to abut against the first restriction portion to restrict the spindle from being freely rotatable.

Description

Power tool

This creation is about a power tool.

Generally, the rotating tool is connected to a working component to drive the working component to rotate, thereby increasing work efficiency. Common working components include screwdriver bits, sleeves, and drill bits. When the working component is replaced, since the working component is rotatably connected with the spindle of the rotating tool, the operator must fix the mandrel with a tool (such as a wrench), and then rotate the working component with another tool. Replacing the working part is very inconvenient in operation.

Although the conventional rotary tool has a mandrel locking structure, it must continue to press or push against the limiting member during the replacement of the working member so as to interfere with the mandrel to limit the rotation of the mandrel. The purpose is that the convenience of operation is insufficient, and the conventional mandrel lock structure is poorly configured, and there is a problem that the mandrel cannot be stably locked, the parts are replaced, and the maintenance is not easy.

Therefore, it is necessary to provide a novel and progressive power tool to solve the above problems.

The main purpose of this creation is to provide a power tool that can be easily operated to limit the rotation of its mandrel.

In order to achieve the above object, the present invention provides a power tool comprising: a body; a rotor rotatably disposed in the body; a spindle coupled to the rotor in a rotational relationship; a rotation limiting mechanism including a a first limiting portion of the mandrel, at least one limiting member movable relative to the first limiting portion, an elastic member coupled to the at least one limiting member, and at least one control member disposed on the body, the at least one limiting member The second restriction portion is engageable with the first restriction portion, and the at least one control member is operable to lock the at least one restriction member to lock or release the at least one restriction member in a locking position or a release position; Wherein, when the at least one control member is in the locked position, the second restricting portion is not engaged with the first restricting portion and the spindle is freely rotatable; when the at least one control member is operated from the locked position to the When the position is released, the at least one control member releases the at least one restriction member, and the elastic member automatically elastically moves the at least one restriction member such that the second restriction portion is moved to abut against the first restriction portion to limit the spindle The law is free to rotate.

The following is a description of possible implementations of the present invention by way of example only, and is not intended to limit the scope of the creation of the present invention.

Referring to FIGS. 1 through 5, a preferred embodiment of the present invention is shown. The power tool 1 of the present invention includes a body 10, a rotor 20, a spindle 30 and a rotation limiting mechanism 40.

The rotor 20 is rotatably disposed in the body 10; the spindle 30 is in a rotationally coupled relationship with the rotor 20; the rotation limiting mechanism 40 includes a first restricting portion 41 disposed on the spindle 30, at least one relative The first limiting portion 41 is a movable limiting member 42 , an elastic member 43 connected to the at least one limiting member 42 , and at least one control member 44 disposed on the body 10 . The at least one limiting member 42 is provided with a first a restriction portion 41 is locked to the second restriction portion 421, and the at least one control member 44 is operable to lock the at least one restriction member 42 to lock or release the at least one restriction member 42 in a locking position or a release position; Wherein, when the at least one control member 44 is in the locked position, the second restricting portion 421 is not engaged with the first restricting portion 41 and the mandrel 30 is free to rotate; when the at least one control member 44 is When the locking position is operated to the releasing position, the at least one control member 44 releases the at least one limiting member 42 , and the elastic member 43 automatically elastically moves the at least one limiting member 42 such that the second limiting portion 421 moves to the first restriction The portion 41 is snapped to restrict the spindle 30 from rotating freely. Thereby, the second restricting portion 421 can be automatically moved to the first restricting portion 41 by operating the at least one control member 44 to achieve the purpose of restricting the rotation of the mandrel 30, and the operation is convenient.

One of the first restricting portion 41 and the second restricting portion 421 includes at least one convex portion 411, and the other includes at least one concave portion 422 that is engageable with the at least one convex portion 411. In the embodiment, the at least one convex portion 411 is a polygonal convex portion surrounding the mandrel 30, and the at least one concave portion 422 is a polygonal concave portion that can be engaged with the polygonal convex portion. The mandrel 30 and the at least one restricting member 42 are stably latched to restrict the rotation of the mandrel 30. In other embodiments, the at least one convex portion and the at least one concave portion may each have a tangential plane that can abut, or other structures that can be stuck to the limit.

The at least one limiting member 42 includes a sleeve 423 disposed on the mandrel 30. The sliding sleeve 423 is provided with the second limiting portion 421 to interfere with the first limiting portion 41. The at least one control member 44 is provided with a first card portion 441, and the at least one limiting member 42 is further provided with a second card portion 424 that can be engaged with the first card portion 441, when the first and second card portions are When the 441, 424 are phase-locked, the at least one control member 44 is in the locked position, and the mandrel 30 is free to rotate. In detail, one of the first card portion 441 and the second card portion 424 includes at least one convex portion 442, and the other includes at least one concave portion 425 that can be engaged with the at least one convex portion 442. In this embodiment, the at least one convex portion 442 is integrally formed on the protrusion of the at least one control member 44. The at least one concave portion 425 is a ring groove disposed on the sliding sleeve 423, and does not need to be in the circumferential direction. It is convenient for the card to be connected.

In this embodiment, the elastic member 43 is a compression spring. Referring to FIG. 4 and FIG. 5 , the at least one control member 44 is pivotally connected to the body 10 , and the at least one control member 44 can swing toward or away from the spindle 30 . Thereby, when the at least one control member 44 is swung toward the mandrel 30 and is in the locked position, the sliding sleeve 423 is pressed against the elastic member 43 to engage the lug with the ring groove, the second The restricting portion 421 is not engaged with the first restricting portion 41 and the mandrel 30 is freely rotatable (as shown in FIG. 4); when the at least one control member 44 is swung away from the mandrel 30 to be in the releasing position, the convex portion The block is detached from the ring groove and the sliding sleeve 423 is pushed by the elastic member 43 to cause the first restricting portion 41 to automatically interfere with the second restricting portion 421 to restrict the rotation of the spindle 30 (see FIG. 5). Easy to operate. In other embodiments, the elastic member may also cooperate with the tension spring; the at least one control member may also be configured to swing around an axis pointing to the spindle; the at least one control member may also be sized The pressing body is disposed on the body to change the distance of the body to be inserted into the body; or the at least one control member is slidably disposed on the body along the circumference of the body, and the at least one limiting member can be locked and released. The function.

Preferably, the power tool 1 further includes at least one pushing member 50 connected to the at least one limiting member 42. When the at least one controlling member 44 is in the releasing position, the at least one pushing member 50 can drive the at least one restriction. The member 42 is pressed against the elastic member 43 to return the at least one control member 44 to the locked position. Preferably, the body 10 includes a portion 11 including at least one radially extending slot 111. The at least one pushing member 50 is disposed through the at least one slot 111 and along the spindle 30. Sliding to drive the at least one restricting member 42 to move, to facilitate operation and to limit the distance that the at least one restricting member 42 moves toward the first restricting portion 41. The seat portion 11 can be additionally connected to the body 10, or can be integrally formed by the body 10. The power tool 1 preferably further includes an elastic member 60 between the seat portion 11 and the at least one control member 44. The elastic member 60 is biased against the at least one control member 44 such that the at least one control member 44 normally faces the The mandrel 30 swings; when the at least one pushing member 50 drives the at least one restricting member 42 to move to the convex portion (the convex portion 442) corresponding to the ring groove, the elastic member 60 can push against the at least one control member 44 swings toward the mandrel 30 to cause the bump to be engaged with the ring groove, which is convenient to operate.

1‧‧‧Power Tools

10‧‧‧ Ontology

11‧‧‧s

111‧‧‧Chute

20‧‧‧Rotor

30‧‧‧ mandrel

40‧‧‧Rotation limiting mechanism

41‧‧‧First Restriction Department

411,442‧‧‧ convex

42‧‧‧Restrictions

421‧‧‧ Second Restriction Department

422, 425 ‧ ‧ recess

423‧‧‧Sleeve

424‧‧‧Second Card Department

43,60‧‧‧Flexible parts

44‧‧‧Controls

441‧‧‧First Card Department

50‧‧‧ push

1 is a perspective view of a preferred embodiment of the present invention.  2 is an exploded view of a preferred embodiment of the present invention.  Figure 3 is a cross-sectional view of a preferred embodiment of the present invention.  4 and 5 are schematic views of the operation of a preferred embodiment of the present invention.  

Claims (12)

A power tool that includes:  An ontology;  a rotor rotatably disposed in the body;  a mandrel that is in rotational relationship with the rotor;  a rotation limiting mechanism includes a first limiting portion disposed on the mandrel, at least one limiting member movable relative to the first limiting portion, an elastic member coupled to the at least one limiting member, and at least one disposed on the body The at least one limiting member is provided with a second restricting portion that can be engaged with the first restricting portion, and the at least one controlling member is operable to lock the at least one limiting member at a locking position or a releasing position And locking or releasing the at least one restriction member;  Wherein, when the at least one control member is in the locked position, the second restricting portion is not engaged with the first restricting portion and the spindle is freely rotatable; when the at least one control member is operated from the locked position to the When the position is released, the at least one control member releases the at least one restriction member, and the elastic member automatically elastically moves the at least one restriction member such that the second restriction portion is moved to abut against the first restriction portion to restrict the spindle from being free. Turn.   The power tool according to claim 1, wherein one of the first restricting portion and the second restricting portion includes at least one convex portion, and the other includes at least one concave portion engageable with the at least one convex portion. The power tool of claim 1, wherein the at least one restriction member comprises a sleeve disposed on the mandrel, the sleeve being provided with the second restriction portion. The power tool of claim 1, wherein the at least one control member is pivotally connected to the body, and the at least one control member is swingable toward or away from the mandrel. The power tool of claim 1, wherein the at least one control member is pivotally connected to the body, and the at least one control member swings about an axis pointing to the mandrel. The power tool of claim 1, wherein the at least one control member is radially pressable to the body. The power tool of claim 1, wherein the at least one control member is slidably disposed on the body along a circumferential surface of the body. The power tool of claim 1, further comprising at least one pushing member connected to the at least one restricting member, wherein the at least one pushing member can drive the at least one restricting member when the at least one controlling member is in the releasing position The resilient member returns the at least one control member to the locked position. The power tool of claim 8, wherein the body comprises a portion, the seat portion includes at least one radially extending chute, the at least one pusher is disposed through the at least one chute and along the mandrel Slip. The power tool of any one of claims 2 to 9, wherein the at least one control member is provided with a first card portion, and the at least one restriction member is further provided with a second card that is engageable with the first card portion. When the first and second card portions are jammed, the at least one control member is located at the locked position. The power tool of claim 10, wherein one of the first card portion and the second card portion includes at least one protrusion, and the other includes at least one recess engageable with the at least one protrusion. The power tool of claim 9, wherein one of the first limiting portion and the second limiting portion comprises at least one convex portion, and the other comprises at least one concave portion engageable with the at least one convex portion; The at least one convex portion is a polygonal convex portion, and the at least one concave portion is a polygonal concave portion that can be engaged with the polygonal convex portion; the limiting member includes a set of sliding sleeves disposed on the mandrel, the sliding portion The at least one control member is pivotally connected to the body, and the at least one control member is swingable toward or away from the spindle; the power tool further includes a seat portion and the at least one control member An elastic member that is biased against the at least one control member such that the at least one control member is normally oscillated toward the spindle; the at least one control member is provided with a first card portion, and the at least one restriction member is further provided with a a second card portion that is engaged with the first card portion, when the first and second card portions are jammed, the at least one control member is located at the locking position; the first card portion and the second card portion One of the at least one convex portion and the other including at least one of the at least one a recessed portion of the convex portion; the at least one convex portion is a protrusion integrally provided on the at least one control member, and the at least one concave portion is a ring groove provided in the sliding sleeve.