AU2020239825B1

AU2020239825B1 - Saw Tool

Info

Publication number: AU2020239825B1
Application number: AU2020239825A
Authority: AU
Inventors: Wen-Hung Chiang
Original assignee: Goshawk Hardware Co Ltd; Shin Ying Entpr Co Ltd
Current assignee: Goshawk Hardware Co Ltd; Shin Ying Entpr Co Ltd
Priority date: 2020-09-27
Filing date: 2020-09-27
Publication date: 2021-10-21
Anticipated expiration: 2040-09-27

Abstract

OF THE DISCLOSURE A saw tool is provided, including: a rotatable member, a first end portion of the rotatable member being configured to be connected with a power source, a second end portion of the rotatable member including an insertion hole ; and a driven assembly, driven by the rotatable member to be reciprocatably movable relative to the rotatable member; wherein the driven assembly includes a first end portion and a second end portion opposite to the first end portion, the first end portion being configured to be connected with a driving tool, the second end portion being slidably received within the insertion hole. 10

Description

P/00/011 Regulation 3.2 AUSTRALIA

Patents Act 1990

COMPLETE SPECIFICATION FORASTANDARDPATENT ORIGINAL TO BE COMPLETED BY APPLICANT

Invention Title: Saw Tool

Name of Applicant: Shin Ying Entpr Co., Ltd.; Goshawk Hardware Co., Ltd.

Address for Service: A.P.T. Patent and Trade Mark Attorneys PO Box 833, Blackwood, SA 5051

The following statement is a full description of this invention, including the best method of performing it known to me/us:

la

SAW TOOL BACKGROUND OF THE INVENTION

Field of the Invention

The present invention relates to a saw tool.

Description of the Prior Art

A conventional saw is mainly driven by a motor to rotate a rotational member,

and converts the power into a force that allows the output shaft to reciprocate, so as

to drive the cutter connected to the output shaft. The rotational member and the

output shaft can move relatively, the output shaft can be driven by the rotational

member to convert the rotating force into reciprocating force; however, the rotating

force of the rotational member cannot be completely converted into the reciprocating

force, which causes deflection and vibration of the cutter during reciprocating

motion of the output shaft. As a result, it is difficult to cut materials smoothly.

The present invention is, therefore, arisen to obviate or at least mitigate the

above-mentioned disadvantages.

SUMMARY OF THE INVENTION

The main object of the present invention is to provide a saw tool which has a

simple structure, is easy to manufacture, and can stabilize operation and reduce

shaking.

To achieve the above and other objects, a saw tool is provided, including: a

rotatable member, a first end portion of the rotatable member being configured to be

connected with a power source, a second end portion of the rotatable member

including an insertion hole ; and a driven assembly, driven by the rotatable member to be reciprocatably movable relative to the rotatable member; wherein the driven assembly includes a first end portion and a second end portion opposite to the first end portion, the first end portion being configured to be connected with a driving tool, the second end portion being slidably received within the insertion hole.

The present invention will become more obvious from the following description

when taken in connection with the accompanying drawings, which show, for

purpose of illustrations only, the preferred embodiment(s) in accordance with the

present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a drawing showing an application of a preferable embodiment of the

present invention;

Fig. 2 is a stereogram of a preferable embodiment of the present invention;

Fig. 3 is a breakdown drawing of a preferable embodiment of the present

invention;

Fig. 4 is a drawing showing partial structure of a preferable embodiment of the

present invention;

Fig. 5 is a stereogram of a rotatable member according to a preferable

embodiment of the present invention;

Figs. 6 and 7 are drawings showing of reciprocating operation of a preferable

embodiment of the present invention; and

Fig. 8 is a drawing showing another application of a preferable embodiment of

the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Please refer to Figs. 1 to 8 for a preferable embodiment of the present invention.

A saw tool 1 of the present invention includes a shell body 10, a rotatable member

and a driven assembly 300.

The saw tool 1 may be a pneumatic or electric reciprocating saw tool. The shell

body 10 includes at least one receiving hole 11, the first end portion of the rotatable

member 20 is configured to be connected with a power source 2, and the second end

portion of the rotatable member 20 includes an insertion hole 24. The driven

assembly 300 is driven by the rotatable member 20 to be reciprocatably movable

relative to the rotatable member 20. The driven assembly 300 includes a first end

portion 31 and a second end portion 32 opposite to the first end portion 31, the first

end portion 31 of the driven assembly 300 is configured to be connected with a

driving tool 3 such as a saw blade. The second end portion 32 of the driven assembly

300 slidably received within the insertion hole 24. The driven assembly 300 includes

a shaft member 30 which includes first end portion 31 and the second end portion 32

of the driven assembly 300, and thus the driven assembly 300 can reciprocate stably

so as to avoid deviation and/or shaking of the saw blade.

The first end portion 31 of the driven assembly 300 and the second end portion

32 of the driven assembly 300 are detachably connected with each other. One of the

first end portion 31 of the driven assembly 300 and the second end portion 32 of the

driven assembly 300 includes a threaded shaft 34, and the other of the first end

portion 31 of the driven assembly 300 and the second end portion 32 of the driven

assembly 300 includes a threaded hole 36 with which the threaded shaft 34 is

screwed, which is easy to assemble/disassemble and/or replace, and is stable.

Preferably, the driven assembly 300 further includes an insert connector, the insert

connector is inserted in the first end portion 31 of the driven assembly 300 and the

second end portion 32 of the driven assembly 300 and inserted within the threaded

hole 36 and the threaded shaft 34. The insert connector may be a set screw 301

screwed to the threaded shaft 34 and within the threaded hole 36, which enhancing

combination of elements. Preferably, the second end portion 32 of the driven

assembly 300 includes at least one grooved recess 38 disposed therearound. In this

embodiment, the second end portion 32 of the driven assembly 300 includes a

plurality of said grooved recesses 38 disposed therearound, each of the plurality of

said grooved recesses 38 extends annularly, thus providing smooth movement and

operation.

The insertion hole 24 has an axial dimension Al, the second end portion 32 of

the driven assembly 300 is inserted in the insertion hole 24 for a distance larger

thanl/3 the axial dimension Al of the insertion hole 24, which can stabilize

operation and reduce shaking.

The rotatable member 20 extends in an axial direction A, the rotatable member

includes a guide groove 21, and the guide groove 21 is in the form of a close loop

around the axial direction A. The saw tool 1 further includes a linkage member 50,

and the linkage member 50 includes a main body 51 and at least one slidable

member 52. The first end portion 31 of the driven assembly 300 and the second end

portion 32 of the driven assembly 300 are connected with the main body 51, and

each said slidable member 52 is disposed on the main body 51. Specifically, the

main body 51 a U-shaped frame, the main body 51 includes a connection section 53 and two arm sections 54 connected to the connection section 53 in interval. The connection section 53 includes a through hole 55, the threaded shaft 34 is disposed through the through hole 55, and at least one of the two arm sections 54 includes one said slidable member 52. The main body 51 is disposed around the rotatable member

, and the two arm sections 54 are located at two opposite sides of the rotatable

member 20, for easy assembling/disassembling.

Each said restriction member 40 is disposed in one said receiving hole 11, each

said restriction member 40 is disposed between the at least one receiving hole 11 and

the first end portion 31 of the driven assembly 300, and each said restriction member

is un-rotatable relative to the receiving hole 11. Each said slidable member 52 is

located out of the at least one restriction member 40, which can mitigate wearing of

the shell body 10.

The saw tool 1 further includes a position-limiting accessory 200 fixedly

connected to the shell body 10. In this embodiment, the position-limiting accessory

200 is a threaded rod, and the first end portion 31 of the shaft member 30 includes an

elongate slot 37 extending axially. An end of the position-limiting accessory 200 is

movably inserted within the elongate slot 37.

Although particular embodiments of the invention have been described in detail

for purposes of illustration, various modifications and enhancements may be made

without departing from the spirit and scope of the invention. Accordingly, the

invention is not to be limited except as by the appended claims.

Claims

WHAT IS CLAIMED IS:

1. A saw tool, including:

a rotatable member, a first end portion of the rotatable member being configured to be

connected with a power source, a second end portion of the rotatable member including

an insertion hole, the first end portion of the rotatable member and the second end

portion of the rotatable member being integrally formed of one piece; and

a driven assembly, driven by the rotatable member to be reciprocatably movable relative

to the rotatable member;

wherein the driven assembly includes a first end portion and a second end portion

opposite to the first end portion, the first end portion of the driven assembly is

configured to be connected with a saw blade, the second end portion of the driven

assembly is slidably received and reciprocatably movable within the insertion hole of the

rotatable member;

wherein the rotatable member extends in an axial direction, the rotatable member

includes a guide groove disposed on an outer surface of the second end portion of the

rotatable member, and the guide groove is in the form of a close loop around the axial

direction, the driven assembly further includes a linkage member, the linkage member

includes a main body and at least one slidable member, the first end portion of the driven

assembly and the second end portion of the driven assembly are connected with the main

body, the at least one slidable member is disposed on the main body and slidably

received within and movable along the guide groove;

wherein the main body is a U-shaped frame, the main body includes a connection section

and two arm sections connected to the connection section in interval, at least one of the

two arm sections includes one said slidable member, and the two arm sections are located at two opposite sides of the rotatable member.

2. The saw tool of claim 1, wherein the first end portion of the driven assembly and the

second end portion of the driven assembly are connected with each other.

3. The saw tool of claim 2, wherein one of the first end portion of the driven assembly and

the second end portion of the driven assembly includes a threaded shaft, and the other of

the first end portion of the driven assembly and the second end portion of the driven

assembly includes a threaded hole with which the threaded shaft is screwed.

4. The saw tool of claim 3, wherein the driven assembly further includes an insert

connector, the insert connector is inserted in the first end portion of the driven assembly

and the second end portion of the driven assembly and inserted within the threaded hole

and the threaded shaft.

5. The saw tool of claim 1, wherein the second end portion of the driven assembly includes

at least one grooved recess disposed therearound.

6. The saw tool of claim 1, further including a shell body and at least one restriction

member, the rotatable member and the driven assembly being disposed on the shell body,

the shell body including at least one receiving hole, the at least one restriction member

being disposed in the at least one receiving hole, the at least one restriction member

being disposed between the at least one receiving hole and the first end portion of the

driven assembly, the first end portion of the driven assembly being un-rotatable relative

to the shell body, the at least one slidable member being located out of the at least one

restriction member.

7. The saw tool of claim 1, further including a shell body and a position-limiting accessory

fixedly connected to the shell body, the rotatable member and the driven assembly being

disposed on the shell body, the first end portion of the driven assembly including an elongate slot extending axially, an end of the position-limiting accessory being movably inserted within the elongate slot.

8. The saw tool of claim 3, wherein the connection section includes a through hole, the

threaded shaft is disposed through the through hole.

9. The saw tool of claim 6, wherein the driven assembly further includes an insert

and the threaded shaft; the insert connector is a set screw or a pin ; the second end

portion of the driven assembly includes a plurality of grooved recesses disposed

therearound, each of the plurality of grooved recesses extends annularly; the insertion

hole has an axial dimension, the second end portion of the driven assembly is inserted in

the insertion hole for a distance larger than 1/3 the axial dimension of the insertion hole;

the connection section includes a through hole, the threaded shaft is disposed through the

through hole; and the saw tool further includes a position-limiting accessory fixedly

connected to the shell body, the first end portion of the driven assembly includes an

elongate slot extending axially, and an end of the position-limiting accessory is movably

inserted within the elongate slot.