TWI402146B - Powered hand tool - Google Patents

Description

Power hand tool set

The present invention relates to the technical field of hand tools, and more particularly to a power hand tool set that allows its tool head to act straight on a work surface under the driving of a power tool.

The conventional power hand tool set, as shown in the third figure, mainly includes a power driving tool 3, a sleeve 4 and a plurality of tool heads 5. The two end faces of the sleeve 4 respectively define a hexagonal sleeve hole 41 and a square sleeve hole 42 for respectively embedding a hexagonal cylinder 50 of the tool head 5 and a driving head 30 of the power driving tool 3.

Basically, for the convenience of the user, the tool heads 5 can be easily inserted and removed into the sleeve 4. The hexagonal sleeve hole 41 of the sleeve 4 is generally designed to be slightly larger than the tool head. The outer diameter of the hexagonal cylinder 50 of 5. That is, when the tool head 5 is inserted into the hexagonal sleeve hole 41 of the sleeve 4, a slight gap remains therebetween. In addition, in order to avoid loosening, a retaining ring 6 is further disposed on the inner wall of the sleeve 4 for temporarily clamping and fixing the hexagonal cylinder 50 of the tool head 5.

However, since the conventional tool head 5 is sleeved in the sleeve 4 having a slightly larger aperture, if the tool head 5 is inserted into the sleeve 4, it is slightly eccentric and does not align with the axis of the sleeve 4, and thus It will deviate from the axis of the drive head 30 of the power driven tool 3. In this state, once the power driving tool 3 is activated to rotate the driving head 30 at a high speed, the tool head 5 in the sleeve 4 is liable to cause severe yaw and shaking, so that work cannot be performed.

The invention provides a power hand tool set which is easy to insert and pull and can accurately align, and is used to make up for the shortcoming that the traditional power hand tool can easily cause shaking.

In detail, the power hand tool set of the present invention includes a tool head, a sleeve and a power driving tool. The tool head has an integrally formed polygonal cylinder and an extension. The extension extends axially from one end of the polygonal cylinder. The two end faces of the sleeve respectively define a coaxial set of holes and a class of holes. The sleeve hole of the sleeve is embedded in a driving head of the power driving tool. The class hole of the sleeve is embedded in the tool head, and includes a first chamber and a second chamber that are in communication. The first chamber is for receiving a polygonal cylinder of the tool head. The second chamber is interposed between the first chamber and the sleeve hole for embedding the extension of the tool head and having a smaller diameter than the aperture of the first chamber. Wherein, when the tool head is embedded in the sleeve, the extension of the tool head can be tightly received by the second chamber of the class hole.

Once the extension of the tool head is tightly inserted into the closed end of the class hole, the polygonal cylinder of the tool head can be automatically fixed on the axis of the sleeve, thereby aligning the axis of the driving head of the driving device. Thereby, the tool head can smoothly run at high speed without yaw. Thus, the present invention has the advantages of accurate alignment and easy alignment.

Other inventive aspects and more detailed technical and functional descriptions of the present invention are disclosed in the following description.

The first and second figures show a preferred embodiment of the power hand tool of the present invention comprising a tool head 1, a sleeve 2 and a power drive tool 3.

The tool head 1 has an integrally formed end 11 , a polygonal cylinder 10 and an extension 12 . The extension 12 extends axially from the other end of the polygonal cylinder 10 for bonding to the sleeve 2. In this embodiment, the working end 11 has a cross for being coupled to a screw head (not shown), but is not limited thereto. The polygonal cylinder 10 is a conventional hexagonal cylinder. The extension 12 is preferably a cylinder for smooth rotation.

Referring to the second figure, the two end faces of the sleeve 2 respectively define a coaxial square hole 21 and a class hole 22. The square sleeve hole 21 is embedded in a square drive head 30 of the power driving tool 3. The first hole 22 and the second chamber 222 are connected to the polygonal cylinder 10 and the extension 12 of the tool head 1 respectively. The class hole 22 is gradually reduced from the outside to the inside, so the second chamber system 222 is interposed between the first chamber 221 and the square sleeve hole 21, and has a smaller aperture than the first chamber 221 . Furthermore, when the tool head 1 is inserted into the sleeve 2, the extension 12 of the tool head 1 can be tightly received in the second chamber 222 of the class hole 22.

Since the square sleeve hole 21 and the class hole 22 are coaxial and the extension portion 12 extends axially from the other end of the polygonal cylinder 10, when the extension portion 12 is forcedly inserted into the class hole 22 When the two chambers 222 are aligned with the axis of the sleeve 2, other portions of the tool head 1 are also aligned on the same axis. Thus, when the sleeve 2 is overlaid with the driving head 30 of the power driving tool 3, the tool head 1 can be smoothly operated at a high speed without being swayed or shaken.

It should be noted that the power driving tool 3 is not limited to any power source, and thus may be a power tool or a pneumatic tool as long as the sleeve 2 can be driven to rotate at a high speed. Moreover, the square sleeve hole 21 of the sleeve 2 and the class hole 22 can be designed to communicate with each other based on length limitation and ease of processing, but is not limited thereto. The square sleeve hole 21 of the sleeve 2 and the class hole 22 may also be spaced apart without affecting the effect.

From the above description, it can be understood that the power hand tool set of the present invention retains the characteristics that the traditional tool head is easy to pull out, and the end of the tool head is skillfully added with an extension to accurately align with the sleeve. Improve the processing quality.

In any event, anyone can obtain sufficient teaching from the description of the above examples, and it is understood that the present invention is indeed different from the prior art, and is industrially usable and progressive. It is the invention that has indeed met the patent requirements and has filed an application in accordance with the law.

1. . . Tool head

10. . . Polygonal cylinder

11. . . Active end

12. . . Extension

2. . . Sleeve

twenty one. . . Square hole

twenty two. . . Class hole

221. . . First chamber

222. . . Second chamber

3. . . Power drive tool

30. . . Square drive head

The first figure is a perspective exploded view of a preferred embodiment of the power hand tool set of the present invention.

The second drawing is a combined appearance of the preferred embodiment.

The third figure shows a conventional power hand tool set.

1. . . Tool head

10. . . Polygonal cylinder

12. . . Extension

2. . . Sleeve

twenty one. . . Square hole

twenty two. . . Class hole

221. . . First chamber

222. . . Second chamber

3. . . Power drive tool

30. . . Square drive head

Claims (10)

A hand tool set for assembling a driving head of a power driving tool, the hand tool set comprising: a tool head having an integrally formed polygonal cylinder and an extension; the extension is axially Extending from one end of the polygonal cylinder; and a sleeve, the two end faces respectively defining a coaxial set of holes and a class of holes; the sleeve is for embedding the driving head of the power driving tool; the class hole is for The tool head is embedded and includes a first chamber and a second chamber; the first chamber is for receiving the polygonal cylinder of the tool head; the second chamber is interposed between the first chamber Between the sleeve and the sleeve, the extension of the tool head is received, and the aperture thereof is smaller than the aperture of the first chamber; wherein when the tool head is embedded in the sleeve, the extension of the tool head can be tightly pressed Received in the second chamber of the class hole. The hand tool set of claim 1, wherein the extension of the tool head is a cylinder. The hand tool set of claim 2, wherein the sleeve hole of the sleeve and the class hole are in communication with each other. The hand tool set of claim 3, wherein the polygonal cylinder of the tool head is a hexagonal cylinder. The hand tool set according to claim 4, wherein the sleeve hole of the sleeve is a square sleeve hole. A power hand tool set comprising: a tool head having an integrally formed polygonal cylinder and an extension; the extension extending axially from one end of the polygonal cylinder; and a power driving tool having a drive And a sleeve, the two end faces respectively defining a coaxial set of holes and a class of holes; the set of holes are embedded in the driving head of the power driving tool; the class holes are embedded in the tool head, and include a first chamber and a second chamber; the first chamber is for receiving the polygonal cylinder of the tool head; the second chamber is between the first chamber and the sleeve Receiving an extension of the tool head, and having an aperture smaller than an aperture of the first chamber; wherein when the tool head is embedded in the sleeve, the extension of the tool head can be tightly received by the class hole The second chamber. The power hand tool set of claim 6, wherein the extension of the tool head is a cylinder. The power hand tool set of claim 7, wherein the sleeve hole of the sleeve and the class hole are in communication with each other. The power hand tool set according to claim 8, wherein the polygonal cylinder of the tool head is a hexagonal cylinder. The power hand tool set according to claim 9, wherein the sleeve hole of the sleeve is a square sleeve hole.