CN111438399A

CN111438399A - Electric circular saw

Info

Publication number: CN111438399A
Application number: CN202010224302.2A
Authority: CN
Inventors: 马建英; 陈国军
Original assignee: Positec Power Tools Suzhou Co Ltd
Current assignee: Positec Power Tools Suzhou Co Ltd
Priority date: 2013-11-08
Filing date: 2013-11-08
Publication date: 2020-07-24
Also published as: CN104625222A

Abstract

The invention discloses an electric circular saw, which comprises a shell, a motor arranged in the shell and a saw blade in transmission connection with the motor, wherein the motor is arranged above the saw blade, an adjusting plate for adjusting the cutting depth of the saw blade is rotatably arranged on the shell, when the adjusting plate rotates, the plane of the adjusting plate is vertical to the plane of the saw blade, the plane of the adjusting plate is parallel to the rotating axial line of the saw blade, when the vertical distance between the rotating axial line of the saw blade and the plane of the adjusting plate is minimum, the included angle between the plane of the adjusting plate and the axial line of the motor is an acute angle α.

Description

Electric circular saw

The invention relates to a divisional application of Chinese patent application with the invention name of 'an electric circular saw' and the application number of 201310551866.7, which is applied by the applicant at 11/08/2013.

Technical Field

The invention relates to an electric circular saw, in particular to an electric circular saw with smaller volume and better accessibility.

Background

The electric circular saw in the prior art has no two types of arrangement modes of a motor and a saw blade: the motor axis is parallel to the saw blade, and the motor axis is perpendicular to the saw blade. For the arrangement mode that the axis of the motor is parallel to the saw blade, the whole electric circular saw is longer, so that the operability and the accessibility are poor; for the arrangement mode that the axis of the motor is vertical to the saw blade, the whole electric circular saw is wide, the whole structure is not small and exquisite, and the occupied space is overlarge.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention aims to provide an electric circular saw, which comprises a shell, a motor arranged in the shell and a saw blade in transmission connection with the motor, and is characterized in that the motor is arranged above the saw blade, an adjusting plate used for adjusting the cutting depth of the saw blade is arranged on the shell, the adjusting plate is in rotary connection with the shell through an adjusting plate rotating shaft, the axial lead of the adjusting plate rotating shaft is parallel to the axial lead of the saw blade rotating shaft, a saw blade groove which extends along the cutting direction of the saw blade and can enable the saw blade to freely penetrate through is formed in the adjusting plate, when the adjusting plate rotates, the plane where the adjusting plate is located is perpendicular to the plane where the saw blade is located, the plane where the adjusting plate is located is parallel to the axial lead of the saw blade rotating shaft, and when the perpendicular distance between the axial lead of the saw blade rotating shaft and the plane where the adjusting plate is located is the smallest, the included angle between the plane where the adjusting plate is.

Preferably, the acute angle α is greater than or equal to 30 degrees.

Preferably, the plane of the adjusting plate is located below the axis of the saw blade rotating shaft.

Preferably, the lower extreme of casing forms and is used for the cover to establish the outer guard shield of saw bit, the guard shield partially covers the saw bit, the regulating plate passes through the regulating plate pivot and rotates to be connected on the guard shield.

Preferably, the housing is provided with a first handle and a second handle for holding.

The electric circular saw of the invention arranges the axial lead of the motor and the saw blade at an angle, thus reducing the length and the width at the same time on the premise of not influencing the performance of the tool, increasing the accessibility of the tool and obviously improving the ergonomic effect.

Drawings

FIG. 1 is a schematic view of an electric circular saw according to a first embodiment of the present invention;

FIG. 2 is a schematic view illustrating a second state of the electric circular saw according to the present invention;

fig. 3 is a top sectional view of the electric circular saw of the present invention.

In the drawings:

1-shell, 2-motor, 3-saw blade, 4-adjusting plate;

11-transmission mechanism, 12-shield, 13-first handle, 14-second handle;

21-a motor rotating shaft;

31-a saw blade rotating shaft;

41-adjusting plate rotating shaft.

Detailed Description

Hereinafter, preferred embodiments of the electric circular saw according to the present invention will be described in detail with reference to the accompanying drawings.

Referring to fig. 1-2, the electric circular saw is defined as a general working state when it is placed in the illustrated position, and the upper and lower orientations of the electric circular saw are defined with reference to the upper and lower orientations of fig. 1-2. The electric circular saw comprises a shell 1 and a motor 2 arranged in the shell 1, wherein the motor 2 is provided with a rotating shaft 21; the saw blade 3 is generally circular, and the center of the circle is provided with a saw blade rotating shaft 31; the motor 2 is positioned above the saw blade 3 and is connected with the saw blade 3 through a transmission mechanism 11, and the transmission mechanism 11 can be a speed change mechanism such as a gear box; the lower end of the housing 1 forms a shield 12, the shield 12 can partially cover the saw blade 3 to protect the user, and the shield 12 is connected with an adjusting plate 4 through an adjusting plate rotating shaft 41 for adjusting the cutting depth of the saw blade 3, wherein the axial line of the adjusting plate rotating shaft 41 is parallel to the axial line of the saw blade rotating shaft 31. In this embodiment, the adjusting plate 4 is provided with a saw blade slot extending along the cutting direction of the saw blade 3 and allowing the saw blade 3 to freely pass through, one end of the adjusting plate 4 can rotate relative to the housing 1, and the plane of the adjusting plate 4 is always perpendicular to the plane of the saw blade 3 and is also always parallel to the axial lead of the saw blade rotating shaft 31. When the adjusting plate 4 rotates away from the shell 1, the exposed part of the saw blade 3 from the saw blade groove is reduced, so that the cutting depth is reduced; when the adjusting plate 4 is rotated closer to the housing 1, the exposed portion of the saw blade 3 from the blade slot is increased, and thus the cutting depth is increased. Meanwhile, when the adjusting plate 4 rotates, the vertical distance between the plane where the adjusting plate 4 is located and the axial line of the saw blade rotating shaft 31 is constantly changed, and when the distance is the minimum, the exposed portion of the corresponding saw blade 3 is the most, corresponding to the maximum cutting depth, fig. 1 illustrates the state when the electric circular saw is at the maximum cutting depth, and fig. 2 illustrates the state when the electric circular saw is not at the maximum cutting depth. The adjusting plate 4 is further provided with a locking mechanism for locking the adjusting plate at different rotation angles.

In the present embodiment, the technical feature of reducing the length and width of the electric circular saw is the position of the motor 2, which is fixed, specifically, the angle of the axis 21 of the motor 2, through experiments, when the adjusting plate 4 is at the maximum cutting depth, that is, at the position shown in fig. 1, the axis of the rotating shaft 21 of the motor forms an acute angle α with the plane of the adjusting plate 4, as can be seen from fig. 1-2, the length of the electric circular saw is significantly reduced, as can be seen from fig. 3, the width of the electric circular saw is significantly reduced, so that the user can feel more comfortable when using the electric circular saw, preferably, the acute angle α is greater than or equal to 30 degrees, the tool accessibility and operability are optimal, and in order to further improve the operability, the first handle 13 and the second handle 14 are respectively arranged on the side of the housing 1 away from the saw blade and above the shield 12, and the user can comfortably hold the handles to operate the two handles.

Compared with the prior art, the length and the width of the electric circular saw are obviously reduced under the condition of not influencing the performance, and the accessibility and the operability are improved.

The above embodiments are merely illustrative of the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the content of the present invention and implement the invention, and not to limit the scope of the invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the scope of the present invention.

Claims

1. An electric circular saw comprises a shell (1), a motor (2) arranged in the shell (1) and a saw blade (3) in transmission connection with the motor (2), and is characterized in that the motor (2) is arranged above the saw blade (3), an adjusting plate (4) used for adjusting the cutting depth of the saw blade (3) is arranged on the shell (1), the adjusting plate (4) is rotatably connected with the shell through an adjusting plate rotating shaft (41), the axial lead of the adjusting plate rotating shaft (41) is parallel to the axial lead of the saw blade rotating shaft (31), a saw blade groove extending along the cutting direction of the saw blade (3) and enabling the saw blade (3) to freely pass through is formed in the adjusting plate (4), when the adjusting plate (4) rotates, the plane where the adjusting plate (4) is located is perpendicular to the plane where the saw blade (3) is located, the plane where the adjusting plate (4) is located is parallel to the axial lead of the saw blade rotating shaft (31), when the perpendicular distance between the axial lead of the adjusting plate (31) and the plane where the adjusting plate (4) is located is the smallest, the adjusting plate (4) is located, the handle space between the adjusting plate (3513) and the handle (3) is located, and the handle space (3) is used for holding the acute angle formed between the handle (3513) and the handle (3) is equal to be equal to the handle (3).

2. The electric circular saw of claim 1, wherein: the lower extreme of casing (1) forms and is used for the cover to establish shield (12) outside saw bit (3), shield (12) partially cover saw bit (3), regulating plate (4) rotate through regulating plate pivot (41) and connect in on shield (12).

3. The electric circular saw of claim 1, wherein: the shell (1) is provided with a second handle (14) for holding.

4. The utility model provides an electric circular saw, includes casing (1), locate motor (2) in casing (1), with saw bit (3) that motor (2) transmission is connected, its characterized in that, motor (2) locate the top of saw bit (3), be equipped with on casing (1) and be used for adjusting saw bit (3) depth of cut's regulating plate (4), regulating plate (4) through regulating plate pivot (41) with the casing rotates to be connected, the axial lead of regulating plate pivot (41) with the axial lead of saw bit pivot (31) is parallel, set up on regulating plate (4) along saw bit (3) cutting direction extends and can make the saw bit groove that saw bit (3) freely passed, work as the axial lead of saw bit pivot (31) with the perpendicular distance between the plane of regulating plate (4) place is minimum, regulating plate (4) place the plane with the axial lead between the motor pivot (21) is acute angle α, acute angle α is greater than or equal to 30 degrees, be connected with first handle (13) on casing (1), first handle (13) is located the handle space of regulating plate (13) and the setting up in the motor pivot (13) axis is perpendicular to the handle.

5. The electric circular saw of claim 4, wherein: the shell (1) is provided with a connecting piece, and one end of the first handle (13) is connected with the shell (1); the other end of the first handle (13) is connected with the connecting piece, and a holding area for an operator to pass through is surrounded by the first handle (13) and the connecting piece.

6. The electric circular saw of claim 4, wherein: the axis of the motor is parallel to the saw blade.

7. The electric circular saw of claim 1, wherein: the lower extreme of casing (1) forms and is used for the cover to establish shield (12) outside saw bit (3), shield (12) partially cover saw bit (3), regulating plate (4) rotate through regulating plate pivot (41) and connect in on shield (12).

8. An electric circular saw comprises a shell (1), a motor (2) arranged in the shell (1) and a saw blade (3) in transmission connection with the motor (2), and is characterized in that the motor (2) is arranged above the saw blade (3), an adjusting plate (4) used for adjusting the cutting depth of the saw blade (3) is arranged on the shell (1), the adjusting plate (4) is rotatably connected with the shell through an adjusting plate rotating shaft (41), the axial line of the adjusting plate rotating shaft (41) is parallel to the axial line of a saw blade rotating shaft (31), a saw blade groove which extends along the cutting direction of the saw blade (3) and can enable the saw blade (3) to freely pass through is formed in the adjusting plate (4), when the vertical distance between the axial line of the saw blade rotating shaft (31) and the plane of the adjusting plate (4) is the smallest, an acute angle α is formed between the plane of the adjusting plate (4) and the axial line of the motor rotating shaft (21), the acute angle α is larger than or equal to 30 degrees, a first handle (13) and a handle connecting piece (13) is connected with the first handle connecting piece (13), and an operator is arranged at the other end of the handle connecting piece (13).

9. The electric circular saw of claim 4, wherein: the axis of the motor is parallel to the saw blade.

10. The electric circular saw of claim 4, wherein: the extension axis of the first handle (13) is perpendicular to the axis of the motor rotating shaft (21).