CN217529440U - Electric circular saw - Google Patents

Abstract

The utility model discloses an electric circular saw, which comprises a saw blade, a motor and a shell, wherein the saw blade is used for cutting a workpiece through self-rotation motion; the motor is used for driving the saw blade to rotate; the casing includes main part, guard shield, apron and limit structure, and motor and guard shield are connected with the main part respectively, and the guard shield covers at least partial saw bit, is equipped with out the dirt mouth on the guard shield, and the apron setting is in a dirt mouth department, and the one end of apron is articulated with the guard shield, and limit structure sets up between guard shield and apron, and the apron keeps in predetermineeing the position through limit structure. According to the utility model discloses an electric circular saw sets up out the dirt mouth through setting up on the guard shield of saw bit, sets up the apron on the dirt mouth, when the sweeps in the guard shield is too much, can open the apron, and limit structure can provide spacingly in the apron home range, makes things convenient for the apron to maintain the position for the user can pour the sweeps conveniently.

Description

Electric circular saw

Technical Field

The utility model relates to an electric saw technical field especially relates to an electric circular saw.

Background

This section provides background information related to the present disclosure only and is not necessarily prior art.

Current electric circular saw can produce a large amount of sweeps at the saw blade with by the ligneous cutting position of cutting in the cutting use, and the sight when the sweeps can block the cutting leads to not cutting according to predetermined route, influences cutting accuracy, if pile up too much sweeps in addition, frictional force when can increasing the saw blade cutting leads to the saw bit to generate heat, influences electric circular saw's work efficiency, and the saw blade fragile.

Most electric circular saw disposes the saw bit guard shield at present, and this guard shield has certain collection dirt effect, can collect the sweeps that produces when the saw bit cutting in the guard shield, but present guard shield and electric circular saw casing lug connection, still need pour the sweeps again with the whole pulling down of guard shield when the sweeps is too much, and the process is loaded down with trivial details, and it is inconvenient to use.

SUMMERY OF THE UTILITY MODEL

The utility model aims at least solving the problem that the scraps accumulated in the saw blade shield are not easy to pour out when the electric circular saw is used for cutting. The purpose is realized by the following technical scheme:

the utility model provides an electric circular saw, electric circular saw includes:

a saw blade for cutting a workpiece by a self-rotating motion;

the motor is used for driving the saw blade to rotate;

the casing, including main part, guard shield, apron and limit structure, the motor with the guard shield respectively with the main part is connected, the guard shield covers at least part the saw bit, be equipped with out the dirt mouth on the guard shield, the apron sets up play dirt mouth department, the one end of apron with the guard shield is articulated, limit structure sets up the guard shield with between the apron, the apron passes through limit structure keeps in predetermineeing the position.

According to the utility model discloses an electric circular saw sets up out the dirt mouth through setting up on the guard shield of saw bit, sets up the apron on the dirt mouth, when the sweeps in the guard shield is too much, can open the apron, and limit structure can provide spacingly in the apron home range, makes things convenient for the apron to maintain the position for the user can conveniently pour the sweeps.

In addition, according to the present invention, the electric circular saw may further have the following additional technical features:

in some embodiments of the present invention, the limiting structure includes a protrusion disposed on the cover plate and a first concave pit disposed on the protective cover, and when the protrusion is matched with the first concave pit, the cover plate closes the dust outlet.

In some embodiments of the utility model, the limit structure further comprises a second pit arranged on the protective cover, and when the protrusion is matched with the second pit, the cover plate is opened to the dust outlet.

In some embodiments of the present invention, the protrusion is hemispherical, and the first recess and/or the second recess is hemispherical.

In some embodiments of the invention, the top end of the cover plate is hinged to the shield.

In some embodiments of the present invention, the dust outlet is disposed at a rear end of the guard shield in the cutting direction of the electric circular saw.

In some embodiments of the present invention, the cover plate has an outer shape adapted to a contour of the dust outlet.

In some embodiments of the present invention, the electric circular saw further includes a handle disposed on the cover plate, and the handle protrudes from the outer wall surface of the cover plate.

In some embodiments of the present invention, the shield includes a first half shell and a second half shell, the first half shell is connected to the second half shell, the saw blade is disposed between the first half shell and the second half shell, the dust outlet includes a first opening disposed on the first half shell and a second opening disposed on the second half shell.

In some embodiments of the present invention, the electric circular saw further includes a bottom plate, the bottom plate is used for abutting against the workpiece, the bottom plate is provided with a cutting hole for the saw blade to pass through, and the bottom end of the guard shield is connected to the bottom plate.

Drawings

Various additional advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like parts are designated by like reference numerals throughout the drawings. In the drawings:

fig. 1 schematically shows a schematic structural view of an electric circular saw (cover plate open state) according to an embodiment of the present invention;

fig. 2 schematically shows a schematic structural view of an electric circular saw (cover plate closed state) according to an embodiment of the present invention;

fig. 3 schematically shows a cross-sectional structural view of a shield according to an embodiment of the invention;

FIG. 4 is an enlarged view of a portion of the structure at Y in FIG. 3;

fig. 5 is a partial enlarged structural view at Z in fig. 3.

The reference numbers are as follows:

10: a saw blade;

20: main body portion, 21: shroud, 211: first half-shell, 212: second half-shell, 22: cover plate, 23: dust outlet, 24: first pit, 25: projection, 26: second pit, 27: handle, 28: baffle, 29: a through hole;

30: a base plate.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless specifically identified as an order of performance. It should also be understood that additional or alternative steps may be used.

Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

For convenience of description, spatially relative terms, such as "inner", "outer", "lower", "below", "upper", "above", and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. This spatially relative term is intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "at 8230; \8230; below" may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

As shown in fig. 1 to 5, according to an embodiment of the present invention, there is provided an electric circular saw including a saw blade 10, a motor, and a housing, the saw blade 10 being configured to cut a workpiece by a self-rotation motion; the motor is used for driving the saw blade 10 to rotate; the casing includes main part 20, guard shield 21, apron 22 and limit structure, and motor and guard shield 21 are connected with main part 20 respectively, and guard shield 21 covers at least partial saw bit 10, is equipped with out dirt mouth 23 on the guard shield 21, and apron 22 sets up in a dirt mouth 23 department, and apron 22's one end is articulated with guard shield 21, and limit structure sets up between guard shield 21 and apron 22, and apron 22 keeps presetting the position through limit structure.

It can be understood that, the saw blade 10, the motor and the main body 20 of the housing refer to the structure of the existing electric circular saw, that is, the main body 20 is the main body housing of the electric circular saw, and the armrest is arranged on the main body housing, and the armrest is arranged along the cutting direction, and the inside of the main body 20 is formed to accommodate the cavity, and the motor is installed in the accommodating cavity, and the motor is in transmission connection with the saw blade 10 to drive the saw blade 10 to rotate to cut the workpiece. The shroud 21 is adapted to the shape of the blade 10 so that the shroud 21 covers the upper half of the blade 10, and may preferably be configured in a hollow disk shape, with the shroud being disposed above the blade 10. The positions of the dust outlets 23 can be arranged at two ends of the protective cover 21, and the specific positions can be arranged according to actual needs. The shape of the dust outlet 23 may be rectangular or circular, and the outer shape of the cover plate 22 is adapted to the shape of the dust outlet 23 so that it can seal the dust outlet 23 in a closed state. One end of the cover plate 22 may be connected to the hood 21 by a hinge structure. The limiting structure can adopt a structure that the protrusion 25 is matched with the pit, for example, the protrusion 25 and the pit are arranged at the hinged position of the cover plate 22 and the shield 21, when the cover plate 22 rotates to a certain angle, the protrusion 25 enters the pit to realize the position locking of the cover plate 22; limit structure can also adopt the form of branch cooperation spout, and the one end of branch is along articulated with the side of apron 22, and the spout sets up along the side of dust outlet 23, and the other end of branch sets up in the spout with slidable mode, and when apron 22 rotated to certain angle, frictional force between branch and the spout made branch can support apron 22 and keep current position.

According to the utility model discloses an electric circular saw sets up out dirt mouth 23 on guard shield 21 at saw bit 10, sets up apron 22 on the dirt mouth 23, when the sweeps in guard shield 21 is too much, can open apron 22, and limit structure can provide spacingly in apron 22 home range, makes things convenient for apron 22 to maintain the position for the user can conveniently pour the sweeps.

In some embodiments of the present invention, the limiting structure includes a protrusion 25 disposed on the cover plate 22 and a first recess 24 disposed on the protective cover 21, and when the protrusion 25 is matched with the first recess 24, the cover plate 22 closes the dust outlet 23. Protruding 25 optional hemisphere or wedge, the appearance and protruding 25 adaptation of first pit 24, protruding 25 and first pit 24 can set up in apron 22 and guard shield 21's articulated department, and the circumference outside of articulated shaft promptly, when apron 22 lock on play dirt mouth 23, protruding 25 slips into first pit 24 for the position and the relative angle of apron 22 are locked, realize apron 22 close seam play dirt mouth 23, and apron 22 accident is opened when avoiding using, causes the sweeps to omit.

In some embodiments of the present invention, the limiting structure further includes a second concave pit 26 disposed on the protecting cover 21, and when the protrusion 25 is matched with the second concave pit 26, the protecting cover 21 opens the dust outlet 23. The shape of the second recess 26 is adapted to the shape of the protrusion 25, the second recess 26 may be disposed at the hinge joint of the cover 22 and the hood 21, i.e., the circumferential outer side of the hinge shaft, and the second recess 26 is disposed at the outer side of the first recess 24 since the cover 22 is disposed to be opened outward. When the cover plate 22 is opened to a certain angle, for example, 90 degrees, the protrusion 25 enters the second recess 26, so that the position of the cover plate 22 is locked, and the scraps can be poured out, thereby avoiding the influence on use caused by the closing of the cover plate 22 during pouring.

In some embodiments of the present invention, protrusion 25 is hemispherical, and first indentation 24 and/or second indentation 26 is hemispherical. The sliding resistance of the hemispherical structure is small, the protrusion 25 and the cover plate 22 can be integrally formed through an injection molding process, the first concave pit 24 and the second concave pit 26 can also be machined in the protective cover 21 through an injection molding process or a turning process, the structural strength is good, and the durability is good.

In some embodiments of the present invention, the top end of the cover plate 22 is hinged to the hood 21. The apron 22 sets up the mode of opening of lifting from bottom to top, and the top of apron 22 is passed through the articulated shaft and is articulated with guard shield 21, specifically, the articulated shaft is transversely installed on the top of dust outlet 23, and the both ends of articulated shaft are connected with guard shield 21, and through-hole 29 is seted up on the top of apron 22 to the cover is established on the articulated shaft, realizes that apron 22 is articulated with guard shield 21, and above-mentioned structure makes when falling the sweeps, and the user can conveniently open dust outlet 23, pours the sweeps in the guard shield 21, need not dismantle guard shield 21, and is easy and simple to handle.

Specifically, the projection 25 is provided on a first end surface of one or both ends of the through hole 29, and the first recess 24 and the second recess 26 are provided on a second end surface of the shroud 21, offset by an angle, for example, 90 °, with the first end surface being provided corresponding to the second end surface. When the cover plate 22 is buckled at the dust outlet 23, the protrusion 25 falls into the first concave pit 24, and when the cover plate 22 is opened at a certain angle, for example, 90 degrees, the protrusion 25 falls into the second concave pit 26.

In some embodiments of the present invention, the dust outlet 23 is provided at the rear end of the guard cover 21 in the cutting direction of the electric circular saw. Saw bit 10 cutting can drive the sweeps to direction of rotation, make the sweeps driven to the rear end of guard shield 21 gradually, set up out dirt mouth 23 in this department, make the most local opening of sweeps in the guard shield 21, make things convenient for the sweeps to pour out, still can set up baffle 28 in the guard shield 21, baffle 28 is the arc and extends the setting along guard shield 21's circumference, the direction of motion that is driven by saw bit 10 along the sweeps promptly sets up, make the sweeps can be piled up at guard shield 21's rear end gradually along baffle 28, make the sweeps concentrate and collect, make things convenient for the follow-up to pour out.

In some embodiments of the present invention, the cover plate 22 has a shape that matches the contour of the dust outlet 23. The dust outlet 23 can be rectangular or circular, preferably in a convex shape, the opening at the top can be used as a hinge joint, the rest can be used as the main body of the dust outlet 23, and the cover plate 22 is the same as the dust outlet 23 in shape, so that the cover plate 22 can seal the dust outlet 23 and avoid the flying of waste scraps.

In some embodiments of the present invention, the electric circular saw further includes a handle 27 disposed on the cover plate 22, and the handle 27 protrudes from the outer wall surface of the cover plate 22. The cover plate 22 is embedded in the dust outlet 23, and a handle 27 is provided to facilitate opening of the cover plate 22. The handle 27 can be arranged at the bottom end of the cover plate 22, the structure of the handle 27 can be a hook type or a Y type, the cross section of the handle 27 is preferably a Y type, one end of the handle 27 is connected with the cover plate 22, two forks extend outwards from the other end of the handle 27, a user can conveniently pinch the handle 27 to open the cover plate 22, and the handle 27 can be connected with the cover plate 22 in a clamping or screwing mode.

In some embodiments of the present invention, the guard 21 includes a first half-shell 211 and a second half-shell 212, the first half-shell 211 is connected to the second half-shell 212, the saw blade 10 is disposed between the first half-shell 211 and the second half-shell 212, and the dust outlet 23 includes a first opening disposed on the first half-shell 211 and a second opening disposed on the second half-shell 212. The first half-shell 211 can be connected with the second half-shell 212 through a snap or a bolt, the structures of the two half-shells are mirror images, and the first half-shell 211 or the second half-shell 212 can be connected with the main body part 20 through a bolt or a snap. The structure in which the two half shells together form the shroud 21 enables the shroud 21 to be easily disassembled for cleaning and reduces manufacturing costs.

In some embodiments of the present invention, the electric circular saw further includes a bottom plate 30, the bottom plate 30 is used for abutting against the workpiece, the bottom plate 30 is provided with a cutting hole for the saw blade 10 to pass through, and the bottom end of the guard 21 is connected to the bottom plate 30. The preferred rectangle of shape of bottom plate 30, one side of bottom plate 30 is connected with main part 20, and the bottom of guard shield 21 is connected with the top surface of bottom plate 30, and saw bit 10 wears to establish in the cutting hole, and the setting up of bottom plate 30 makes and supports bottom plate 30 when cutting on the work piece, makes the electric circular saw be difficult for rocking, stability when improving the cutting, and bottom plate 30 still passes through the structural support for guard shield 21 for the connection between guard shield 21 and the main part 20 is more reliable.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. An electric circular saw, comprising:

a saw blade for cutting a workpiece by a self-rotating motion;

the motor is used for driving the saw blade to rotate;

the casing, including main part, guard shield, apron and limit structure, the motor with the guard shield respectively with the main part is connected, the guard shield covers the part at least the saw bit, be equipped with out the dirt mouth on the guard shield, the apron sets up play dirt mouth department, the one end of apron with the guard shield is articulated, limit structure sets up the guard shield with between the apron, the apron passes through limit structure keeps in predetermineeing the position.

2. The electric circular saw of claim 1, wherein the limiting structure includes a protrusion provided on the cover plate and a first recess provided on the guard, and when the protrusion is engaged with the first recess, the cover plate closes the dust outlet.

3. The electric circular saw of claim 2, wherein the limiting structure further comprises a second recess provided on the guard, and the cover plate opens the dust outlet when the protrusion is engaged with the second recess.

4. The electric circular saw of claim 3, wherein the protrusion is hemispherical, and the first dimple and/or the second dimple is hemispherical.

5. The electric circular saw of claim 1, wherein a top end of the cover plate is hinged to the guard.

6. The electric circular saw of claim 1, wherein the dust outlet is provided at a rear end of the guard in a cutting direction of the electric circular saw.

7. The electric circular saw of claim 1, wherein the cover plate has an outer shape that matches a contour of the dust outlet.

8. The electric circular saw of claim 1, further comprising a handle provided on the cover plate, the handle protruding from an outer wall surface of the cover plate.

9. The electric circular saw of claim 1, wherein the shroud includes a first half shell and a second half shell, the first half shell being connected with the second half shell, the saw blade being disposed between the first half shell and the second half shell, the dust outlet including a first opening disposed on the first half shell and a second opening disposed on the second half shell.

10. The electric circular saw according to any one of claims 1 to 9, further comprising a bottom plate for abutting against the workpiece, the bottom plate being provided with a cutting hole through which the saw blade passes, and a bottom end of the guard being connected to the bottom plate.

Images