CN201493555U

CN201493555U - Hand-held circular saw guard shield mechanism

Info

Publication number: CN201493555U
Application number: CN2009201959833U
Authority: CN
Inventors: 卢韬
Original assignee: Ningbo Jiemei Import & Export Co Ltd
Current assignee: Ningbo Jiemei Import & Export Co Ltd
Priority date: 2009-09-07
Filing date: 2009-09-07
Publication date: 2010-06-02
Anticipated expiration: 2019-09-07
Also published as: WO2011026302A1

Abstract

The utility model relates to a circular saw guard shield mechanism comprising a casing (1). All components are arranged inside the casing (1), a saw blade (2) is arranged at the top part of the casing (1), part of the saw blade (2) is positioned inside the casing (1), the other part of the saw blade (2) is exposed outside the casing (1), a guard shield (3) for covering the saw blade (2) is arranged on the casing (1), and a hole (4) for the saw blade (2) to be exposed outside the guard shield (3) is formed on the end surface of the guard shield (3). The utility model is characterized in that one end of the guard shield (3) is hinged with the top part of the casing (1); and preferably, a guard shield limiting mechanism is also arranged on the casing. Compared with the prior art, the utility model simplifies the matched structure of the guard shield and the casing because the guard shield is hinged on the casing, the mobile operation of the guard shield is very convenient, the guard shield can rotate automatically under working pressure so as to enable the saw blade to be exposed outside the guard shield for accepting cutting actions, and the arrangement of the guard shield limiting mechanism enables the cutting depth of the circular saw to be accurately ensured.

Description

A kind of hand-held circular saw guard mechanism

Technical field

The utility model relates to a kind of hand electric annular saw, specifically refers to a kind of guard shield mechanism of hand-held annular saw.

Background technology

Electric circular saw can be divided into the hand-held circular saw of miter saw, portable circular saw and hand-held operation usually according to occupation mode, the saw blade that it generally includes driving mechanism and is rotated by drive mechanism.For considering that saw blade is provided with the guard shield that saw blade is surrounded usually on safety and the convenient angle of using.For miter saw and portable circular saw, because saw blade is arranged on outside the driving mechanism, its guard shield is divided into two parts usually, what promptly cover in the part saw blade all is the branch body structure basically, comprises fixed upper shield and mobilizable lower shield, and upper shield covers in the top of saw blade, the relative position of itself and saw blade can not change, lower shield then surrounds the lower part of saw blade movably, and in use, mobile lower shield exposes with handled easily the lower part of saw blade.Be this class formation as the guard shield among patent CN100346947C, CN201179573Y, CN1505556A, the CN2191073Y.And,, therefore be typically provided with the housing that its inside is equipped with various parts owing to need hand operated person's hand to grip operation for hand-held circular saw, and housing can be divided into hand-held afterbody and the work head two parts that grip for the operator; The saw blade that can be driven rotation is arranged on the work head and the part saw blade exposes outside described housing with convenient cutting.In order to protect the saw blade of electric circular saw, the protection user avoids being subjected to the injury of sawtooth on the saw blade, also is provided with that described saw blade can be surrounded, mobilizable guard shield on housing.Be arranged between guard shield and the housing telescoping mechanism and on the one hand guard shield be installed on the housing, make guard shield be subjected to displacement and can lock this displacement on the other hand with respect to housing.This telescoping mechanism need have the function flexible and location simultaneously, and the structure of telescoping mechanism is with regard to more complicated like this, and operation is also more loaded down with trivial details, need unlock earlier during adjusting, mobile guard shield and then lock guard shield then.

Summary of the invention

Technical problem to be solved in the utility model is the present situation at prior art, provides a kind of simple in structure and need not operate the hand-held circular saw guard mechanism that can change the guard shield displacement especially.

The utility model solves the problems of the technologies described above the technical scheme that is adopted: this hand-held circular saw guard mechanism comprises:

Housing is provided with driving mechanism in it, have the hand-held afterbody and the work head that grip for the operator;

Saw blade by drive mechanism, can be arranged on described work head rotationally, and exposes outside the work head forward to the small part saw blade;

Guard shield is used to surround the saw blade that exposes outside the work head;

It is characterized in that on the work head that is arranged on described housing that guard shield can rotate, this guard shield has and can expose outside the long and narrow hole of guard shield for described saw blade, and also is provided with between guard shield and housing and guard shield is had away from the work head so that ensconce elastic component in the guard shield in the described saw blade.

Guard shield is articulated on the housing, and when using this annular saw, hand-held pressure can make the guard shield rotation that saw blade is exposed and cut like this.Fit structure between this guard shield and the housing is simple, and operation is especially simple, convenient.

In order to make guard shield housing unidirectional motion in opposite directions, prevent from that guard shield from moving in the other direction to hinder operation that can be provided with slide opening on described guard shield, the outer wall of described housing is provided with and is contained in the described slide opening, and can produce the projection of relative displacement with slide opening.

In order accurately to limit the degree of depth of cutting, can on the outer wall of described housing, be provided with the position-limit mechanism of the described guard shield shift length of restriction.

Preferably, described position-limit mechanism can be for producing the catch of relative displacement with the outer wall of described housing, and this catch is provided with locating hole, and bolt passes this locating hole and is threaded on the described housing.This is relatively simple for structure, and is easy to operate.

Described guard shield can be articulated on the described housing by axostylus axostyle, and described elastic component is the torsion spring that is set on the described axostylus axostyle.

Compared with prior art, the utility model is owing to be articulated in guard shield on the housing, simplified the fit structure of guard shield and housing, and the move operation of guard shield is very convenient, guard shield can rotate voluntarily in operating pressure and saw blade be exposed carry out cutting action outside the guard shield, and the depth of cut that is arranged so that this annular saw of guard shield position-limit mechanism can access accurate assurance.

Description of drawings

Fig. 1 is in the not perspective view of duty for annular saw among the utility model embodiment;

Fig. 2 is the in running order perspective view of annular saw among the utility model embodiment;

Fig. 3 is the perspective view of guard shield open mode among the utility model embodiment.

The specific embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

As shown in Figure 1 to Figure 3, this hand-held circular saw guard mechanism comprises the housing 1 that is provided with each parts in it, and housing 1 can be divided into hand-held afterbody and the work head that grips for the operator; Saw blade 2 is installed in the work head of housing 1, and the part of saw blade 2 is positioned at housing 1, and the part in addition of saw blade 2 is exposed outside housing 1.The end face of guard shield 3 is provided with the hole 4 that exposes outside guard shield for above-mentioned saw blade 2, one end of guard shield 3 is articulated in the top of housing 1 by axostylus axostyle 5, torsion spring 11 is set on the axostylus axostyle 5, so that guard shield 3 is lived saw blade 2 whole cover caps away from housing 1 under the situation that is not subjected to the external force effect all the time; The other end of guard shield 3, be provided with slide opening 6 on the side of guard shield, the outer wall of housing 1 is provided with the projection 7 that is contained in the slide opening 6.

Catch 8 is provided with locating hole 9, and bolt 10 passes locating hole 9 housing 1 that is threaded.

When annular saw does not use, guard shield 3 will expose outside the saw blade 2 complete cover caps of housing 1 and live, and not only can protect saw blade but also can prevent that saw blade from hurting sb.'s feelings; During use, unscrew bolt 10 earlier, mobile catch 8 arrives suitable position, and then tights a bolt 10, fixedly the position of catch 8; Close the power switch of logical annular saw, saw blade 2 rotates, and need not operate especially this moment, and guard shield 3 promptly can rotate at the lower edge axle 5 that stops of object for sawing, and saw blade is exposed, and cuts.The degree of depth that saw blade exposes is that depth of cut is then controlled by the distance that catch moves.

Claims

1. a hand-held circular saw guard mechanism comprises

Housing (1) is provided with driving mechanism in it, have the hand-held afterbody and the work head that grip for the operator;

Saw blade (2) by drive mechanism, can be arranged on described work head rotationally, and exposes outside the work head forward to small part saw blade (2);

Guard shield (3) is used to surround the saw blade (2) that exposes outside the work head;

It is characterized in that described guard shield (3) can be arranged on the work head of described housing (1) rotationally, this guard shield (3) has and can expose outside the long and narrow hole (4) of guard shield (3) for described saw blade (2), and also is provided with between guard shield (3) and housing (1) and guard shield (3) is had away from the work head so that the elastic component in the plant guard shield (3) in the described saw blade (2).

2. hand-held circular saw guard according to claim 1 mechanism is characterized in that described guard shield (3) is provided with slide opening (6), and the outer wall of described housing (1) is provided with and is contained in the described slide opening (6), and can produce the projection (7) of relative displacement with slide opening (6).

3. hand-held circular saw guard according to claim 1 and 2 mechanism is characterized in that the outer wall of described housing (1) is provided with the position-limit mechanism of restriction described guard shield (3) shift length.

4. hand-held circular saw guard according to claim 3 mechanism, it is characterized in that described position-limit mechanism is one can produce the catch (8) of relative displacement with the outer wall of described housing, this catch (8) is provided with locating hole (9), and bolt (10) passes this locating hole (9) and is threaded on the described housing (1).

5. hand-held circular saw guard according to claim 1 mechanism is characterized in that described guard shield (3) is articulated on the described housing (1) by axostylus axostyle (5), and described elastic component is for being set in the torsion spring (11) on the described axostylus axostyle (5).