An electric circular saw structure

Abstract

The utility model discloses a solve the inconvenient problem of cutting depth adjustment in the structure of the existing electric circular saw, provide a kind of electric circular saw structure, including electric circular saw body, still include the bottom plate being rotatably connected with electric circular saw body;Bottom plate overall is square board shape;The front and rear parts of the hollow hole area on bottom plate are separately provided with first hinged plate and second hinged plate;Electric circular saw body and first hinged plate still are provided with rotating plate between, the bottom area of rotating plate and first hinged plate rotatably connected, the top area of rotating plate and electric circular saw body are rotatably connected by pivot;Second hinged plate between the rear part of hollow hole area and electric circular saw body still are provided with connecting plate;Wherein connecting plate includes two mutually perpendicular board face;One board face is rotatably connected with second hinged plate;First arc-shaped hole is provided on another board face;The center of first arc-shaped hole and the axis of pivot are located on same straight line;Realize the left and right inclination and upside-down flip adjustment of electric circular saw body, control cutting depth.

Description

Technical Field

[0001] This utility model relates to the field of power tool technology, and in particular to an electric circular saw structure. Background Technology

[0002] A circular saw is an electric tool that uses a unidirectional series-wound electric motor as its power source and a transmission mechanism to drive a circular saw blade for sawing operations. It is mainly used for cutting materials such as sheet metal. Furthermore, to facilitate multi-angle cutting operations, the angle of the circular saw relative to its base plate is usually rotatable, as shown in patent application publication number CN119703211A. However, while existing circular saws can adjust the saw blade tilt angle, it is difficult to adjust the cutting depth. Therefore, a circular saw structure that allows for convenient adjustment of the cutting depth is needed. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies and provide an electric circular saw structure.

[0004] To solve the above problems, the present invention adopts the following solution: An electric circular saw structure includes an electric circular saw body and a base plate rotatably connected to the electric circular saw body; the base plate is generally square; the base plate has a perforated area for a saw blade to pass through; a first hinge plate for rotatably connecting to the electric circular saw body is provided at the front of the perforated area on the base plate, and a second hinge plate for rotatably connecting to the electric circular saw body is provided at the rear of the perforated area; both the first hinge plate and the second hinge plate are vertically fixed above the base plate. A rotating plate is also provided between the electric circular saw body and the first hinge plate. The bottom area of ​​the rotating plate is rotatably connected to the first hinge plate, and the top area of ​​the rotating plate is rotatably connected to the electric circular saw body through a rotating shaft. The axis of the rotating shaft is parallel to the bottom plate and perpendicular to the forward direction of the electric circular saw. A connecting plate is also provided between the second hinge plate located behind the hollow hole area and the electric circular saw body. The connecting plate includes two mutually perpendicular plate surfaces. One plate surface is rotatably connected to the second hinge plate. The other plate surface is provided with a first arc-shaped hole. The center of the first arc-shaped hole is on the same straight line as the axis of the rotating shaft.

[0005] Furthermore, the first arc-shaped hole on the connecting plate is provided with a threaded component for clamping, which passes through the first arc-shaped hole and is connected to the electric circular saw body by threads.

[0006] Furthermore, the first hinge plate is also provided with angle scale lines, which are distributed along the edge of the arc-shaped first hinge plate. The angle scale lines correspond to the rotation angle of the rotating plate relative to the first hinge plate. The angle scale lines are located in the first hinge plate away from the part where it is rotatably connected to the rotating plate. The edge of the rotating plate extends a portion from the side edge of the first hinge plate where the angle scale lines are provided, and an angle indicator line corresponding to the angle scale lines is provided on the extended portion.

[0007] Furthermore, the first hinge plate is also provided with a second arc-shaped hole for fixed connection with the rotating plate. The center of the arc trajectory of the second arc-shaped hole coincides with the part where the first hinge plate and the rotating plate are rotatably connected. The rotating plate is provided with a fixing hole corresponding to the second arc-shaped hole. A threaded part for clamping is fixedly installed in the second arc-shaped hole and the fixing hole. The distance between the fixing hole on the rotating plate and the angle indicator line provided on its extension is greater than a set distance.

[0008] Furthermore, the front edge of the base plate is also provided with tilting scales; the distribution of the tilting scales corresponds to the position where the saw blade extends toward the front edge of the base plate when the electric circular saw body is rotated relative to the first hinge plate and the second hinge plate at the corresponding rotation angle.

[0009] Furthermore, the tilt scale includes angle markings and a V-shaped notch, with the V-shaped notch corresponding to the orientation of the saw blade at the corresponding angle.

[0010] Furthermore, the electric circular saw body includes a motor and a saw blade, wherein the motor and the saw blade are connected by a transmission to drive the saw blade to rotate; the motor is located above the base plate.

[0011] Furthermore, the center of the saw blade is located below the motor output shaft.

[0012] Furthermore, the first and second hinge plates are at the same height as the rotating connection part of the electric circular saw body, and the line connecting the two is consistent with the cutting direction of the electric circular saw body.

[0013] The beneficial effects of this utility model are as follows: By setting a connecting plate to the electric circular saw body, and cooperating with the first arc-shaped hole on the connecting plate and the shaft connection between the electric circular saw and the rotating plate, the electric circular saw body can be flipped up and down to adjust the cutting depth of its saw blade. By setting a first hinge plate and a second hinge plate, combined with a connecting plate and a rotating plate, the cutting angle of the electric circular saw body can be adjusted to achieve multi-angle cutting operations and form an inclined cutting surface. By setting angle scale lines on the first hinge plate in conjunction with angle indicator lines on the rotating plate, the tilt angle of the electric circular saw body can be obtained more accurately, thereby controlling the tilt angle of the formed inclined cutting surface. By setting a distance between the threaded parts used to fix the rotating plate and the first hinge plate and the angle indicator line, the threaded parts are prevented from obstructing the angle indicator line and affecting the reading of the tilt angle. By setting a tilt scale on the base plate, the cutting line formed by the saw blade during cutting is aligned with the tilt scale, making it convenient to check whether the rotation angle of the electric circular saw body is accurate during operation. By setting the saw blade to be connected to the motor drive, and with the center of the saw blade located below the motor, the saw blade can cut to a greater depth. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of Example 1; Figure 2 This is a schematic diagram of the base plate portion of Example 1; Figure 3 This is a schematic diagram showing the separation of the first hinge plate and the rotating plate in Embodiment 1; Figure 4 This is a schematic diagram of the motor and saw blade assembly in Example 1.

[0015] Figure labeling: Electric circular saw body 1, motor 11, saw blade 12, base plate 2, first hinge plate 21, second hinge plate 22, rotating plate 23, connecting plate 24, first arc-shaped hole 25, threaded part 26, angle scale line 27, angle indicator line 28, second arc-shaped hole 29, fixing hole 210, tilt scale 211. Detailed Implementation

[0016] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, unless otherwise specified, the following embodiments and features described therein can be combined with each other.

[0017] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the figures only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0018] Example 1: like Figures 1-4As shown, an electric circular saw structure includes an electric circular saw body 1 and a base plate 2 rotatably connected to the electric circular saw body 1. The base plate 2 is generally square. The base plate 2 has a perforated area for a saw blade 12 to pass through. A first hinge plate 21 for rotatably connecting to the electric circular saw body 1 is provided at the front of the perforated area on the base plate 2, and a second hinge plate 22 for rotatably connecting to the electric circular saw body 1 is provided at the rear of the perforated area. In this example, both the first hinge plate 21 and the second hinge plate 22 are vertically fixed above the base plate 2. To facilitate the rotational connection with the electric circular saw body 1, it should be noted that the rotational surfaces of the first hinge plate 21 and the electric circular saw body 1, as well as the rotational surfaces of the second hinge plate 22 and the electric circular saw body 1, are perpendicular to the forward direction of the electric circular saw. Furthermore, the rotational connection points of the first hinge plate 21 and the second hinge plate 22 with the electric circular saw body 1 are located at the same height, and the line connecting the two is consistent with the cutting forward direction of the electric circular saw body 1. This ensures that the axis of rotation of the electric circular saw is parallel to its cutting forward direction, facilitating the control of the cutting operation when tilted.

[0019] A rotating plate 23 is also provided between the electric circular saw body 1 and the first hinge plate 21. The bottom area of ​​the rotating plate 23 is rotatably connected to the first hinge plate 21, and the top area of ​​the rotating plate 23 is rotatably connected to the electric circular saw body 1 via a rotating shaft. The axis of the rotating shaft is parallel to the bottom plate 2 and perpendicular to the forward direction of the electric circular saw. A connecting plate 24 is also provided between the second hinge plate 22 located behind the perforated area and the electric circular saw body 1. The connecting plate 24 includes two mutually perpendicular plate surfaces. One plate surface is rotatably connected to the second hinge plate 22. The other plate surface is provided with a first arc-shaped hole 25. The center of the first arc-shaped hole 25 is on the same straight line as the axis of the rotating shaft. A threaded part 26 for clamping is provided at the first arc-shaped hole 25 on the connecting plate 24. The threaded part 26 passes through the first arc-shaped hole 25 and is connected to the electric circular saw body 1 via a thread. The connection and adjustment of the threaded part 26 relative to the first arc-shaped hole 25, and its tightening at different positions, can adjust the rotation angle of the electric circular saw body 1 relative to the rotating shaft, thereby controlling the cutting depth of the saw blade 12. It should be noted that, in order to ensure the relative positional stability between the electric circular saw body 1 and the base plate 2, the rotating plate 23 and the connecting plate 24 in this example are both integral plates. In addition, a threaded part 26 for fastening is provided at the connection position between the connecting plate 24 and the second hinge plate 22, and a threaded part 26 for fastening is also provided between the first hinge plate 21 and the rotating plate 23. In this way, after the cutting angle is determined, it can be more stable and convenient to cut a stable inclined cut surface. The threaded part 26 used in this example includes a mushroom-head screw and a flat-head knob, wherein the mushroom-head screw and the flat-head knob are clamped by thread engagement.

[0020] The first hinge plate 21 is also provided with an angle scale line 27. The angle scale line 27 is distributed along the arc-shaped edge of the first hinge plate 21. The angle scale line 27 on the edge corresponds to the rotation angle of the rotating plate 23 relative to the first hinge plate 21. The angle scale line 27 is located in the first hinge plate 21 away from the part where it is rotatably connected to the rotating plate 23. The edge of the rotating plate 23 extends a portion from the side edge of the first hinge plate 21 where the angle scale line 27 is provided. An angle indicator line 28 corresponding to the angle scale line 27 is provided on the extended portion. When the angle indicator line 28 coincides with the corresponding angle scale line 27, the current tilt angle of the rotating plate 23 can be obtained relatively easily, thereby obtaining the tilt angle of the saw blade 12. The first hinge plate 21 is also provided with a second arc-shaped hole 29 for fixed connection with the rotating plate 23. The center of the arc trajectory of the second arc-shaped hole 29 coincides with the part where the first hinge plate 21 and the rotating plate 23 are rotatably connected. The rotating plate 23 is provided with a fixing hole 210 corresponding to the second arc-shaped hole 29. A threaded part 26 for clamping is fixedly provided in the second arc-shaped hole 29 and the fixing hole 210. The threaded part 26 clamps the rotating plate 23 and the first hinge plate 21 to prevent them from deflecting relative to each other. The distance between the fixing hole 210 and the angle indicator line 28 set on its extension is greater than a set distance to avoid obstruction. In this example, the rotating plate 23 and the vertical first hinge plate 21 are in contact with each other. The fixing hole 210 on the rotating plate 23 is also arc-shaped. In this way, the connection position of the threaded part 26 in the fixing hole 210 can be adjusted. While realizing the connection between the rotating plate and the first hinge plate, it effectively avoids the threaded part 26 from obstructing the angle scale line 27 and the angle indicator line 28, making it convenient to read the angle indicated by the two.

[0021] The front edge of the base plate 2 is also provided with a tilt scale 211. The distribution of the tilt scale 211 corresponds to the position of the saw blade 12 extending towards the front edge of the base plate 2 when the circular saw body 1 is rotated relative to the first hinge plate 21 and the second hinge plate 22 at the corresponding rotation angle. The tilt scale 211 includes angle markings and a V-shaped notch. The V-shaped notch corresponds to the orientation of the saw blade 12 at the corresponding angle. Since the saw blade 12 forms a slit when cutting, the slit corresponds to the tip of the V-shaped notch, making it easy to obtain the current tilt angle of the saw blade 12 without referring to the angle scale line 27. It should be noted that in this example, only 0° and 45° tilt angles are provided.

[0022] The circular saw body 1 includes a motor 11 and a saw blade 12, wherein the motor 11 and the saw blade 12 are connected by a drive, driving the saw blade 12 to rotate. The motor 11 is located above the base plate 2. In this example, a small-volume, high-torque AC motor 11 is used, so that the output shaft of the motor 11 can be as close as possible to the base plate 2, thereby controlling the position of the saw blade 12, which is connected to the output shaft of the motor 11, to be lower. The center position of the saw blade 12 is located below the output shaft of the motor 11. In this way, the center position of the saw blade 12 is lower, so as to achieve the deepest possible cut. Especially when the circular saw body 1 is tilted, it can also ensure that the area of ​​the saw blade 12 located below the base plate 2 is sufficient to ensure the cutting effect.

[0023] During implementation, by connecting the connecting plate 24 to the electric circular saw body 1, and cooperating with the first arc-shaped hole 25 on the connecting plate 24 and the rotating shaft connection between the electric circular saw and the rotating plate 23, the electric circular saw body 1 can be flipped up and down to adjust the cutting depth of its saw blade 12. By setting the first hinge plate 21 and the second hinge plate 22, combined with the connecting plate 24 and the rotating plate 23, the cutting angle of the electric circular saw body 1 can be adjusted to achieve multi-angle cutting operations and form an inclined cutting surface. By setting the angle scale line 27 on the first hinge plate 21 and cooperating with the angle indicator line 28 on the rotating plate 23, a more accurate electric circular saw depth can be obtained. The tilt angle of the body 1 controls the tilt angle of the formed tilted cutting surface; by setting a distance between the threaded part 26 used to fix the rotating plate 23 and the first hinge plate 21 and the angle indicator line 28, the threaded part 26 is prevented from obstructing the angle indicator line 28 and affecting the reading of the tilt angle; by setting a tilt scale 211 on the base plate 2, the cutting line formed by the saw blade 12 during cutting is aligned with the tilt scale 211, which facilitates the verification of the accuracy of the rotation angle of the electric circular saw body 1 during operation; by setting the saw blade 12 to be connected to the motor 11 for transmission, and the center of the saw blade 12 is located below the motor 11, the cutting depth of the saw blade 12 is made deeper.

[0024] The above description is merely a specific example of this utility model and does not constitute any limitation on this utility model. Obviously, those skilled in the art, after understanding the content and principle of this utility model, may make various modifications and changes in form and details without departing from the principle and structure of this utility model. However, these modifications and changes based on the concept of this utility model are still within the protection scope of the claims of this utility model.

Claims

1. A circular saw structure, comprising a circular saw body (1) and a base plate (2) rotatably connected to the circular saw body (1); the base plate (2) is generally square; the base plate (2) is provided with a perforated area for a saw blade (12) to pass through; a first hinge plate (21) for rotatably connecting to the circular saw body (1) is provided at the front of the perforated area on the base plate (2) and a second hinge plate (22) for rotatably connecting to the circular saw body (1) is provided at the rear of the perforated area. Its features are, A rotating plate (23) is also provided between the electric circular saw body (1) and the first hinge plate (21). The bottom area of ​​the rotating plate (23) is rotatably connected to the first hinge plate (21), and the top area of ​​the rotating plate (23) is rotatably connected to the electric circular saw body (1) through a rotating shaft. The electric circular saw body (1) flips up and down around the rotating connection part with the rotating shaft. A connecting plate (24) is also provided between the second hinge plate (22) located behind the hollow hole area and the electric circular saw body (1). The connecting plate (24) includes two mutually perpendicular plate surfaces. One plate surface is rotatably connected to the second hinge plate (22). The other plate surface is provided with a first arc-shaped hole (25). The center of the first arc-shaped hole (25) and the axis of the rotating shaft are on the same straight line.

2. The electric circular saw structure according to claim 1, characterized in that, The first arc-shaped hole (25) on the connecting plate (24) is provided with a threaded part (26) for clamping. The threaded part (26) passes through the first arc-shaped hole (25) and is connected to the electric circular saw body (1) by thread.

3. The electric circular saw structure according to claim 1, characterized in that, An angle scale line (27) is also provided on the first hinge plate (21). The angle scale line (27) is distributed along the edge of the arc-shaped first hinge plate (21). The angle scale line (27) corresponds to the rotation angle of the rotating plate (23) relative to the first hinge plate (21). The angle scale line (27) is located in the first hinge plate (21) away from the part where it is rotatably connected to the rotating plate (23). The edge of the rotating plate (23) extends a portion from the side edge of the first hinge plate (21) where the angle scale line (27) is provided. An angle indicator line (28) corresponding to the angle scale line (27) is provided on the extended portion.

4. The electric circular saw structure according to claim 3, characterized in that, The first hinge plate (21) is also provided with a second arc-shaped hole (29) for fixed connection with the rotating plate (23). The center of the arc trajectory of the second arc-shaped hole (29) coincides with the part where the first hinge plate (21) and the rotating plate (23) are rotatably connected. The rotating plate (23) is provided with a fixing hole (210) corresponding to the second arc-shaped hole (29). A threaded part (26) for clamping is fixedly provided in the second arc-shaped hole (29) and the fixing hole (210). The fixing hole (210) on the rotating plate (23) is spaced from the angle indicator line (28) provided on its extension part by a distance greater than a set distance.

5. The electric circular saw structure according to claim 3, characterized in that, The front edge of the base plate (2) is also provided with a tilt scale (211); the distribution of the tilt scale (211) corresponds to the position of the saw blade (12) extending towards the front edge of the base plate (2) when the electric circular saw body (1) is relative to the first hinge plate (21) and the second hinge plate (22) at the corresponding rotation angle.

6. The electric circular saw structure according to claim 5, characterized in that, The tilt scale (211) includes an angle mark and a V-shaped notch, the V-shaped notch corresponding to the orientation of the saw blade (12) at the corresponding angle.

7. The electric circular saw structure according to claim 1, characterized in that, The electric circular saw body (1) includes a motor (11) and a saw blade (12), wherein the motor (11) and the saw blade (12) are connected by a transmission to drive the saw blade (12) to rotate; the motor (11) is located above the base plate (2).

8. The electric circular saw structure according to claim 7, characterized in that, The center of the saw blade (12) is located below the output shaft of the motor (11).

9. The electric circular saw structure according to claim 1, characterized in that, The first hinge plate (21) and the second hinge plate (22) are at the same height as the rotating connection part of the electric circular saw body (1), and the line connecting the two is consistent with the cutting direction of the electric circular saw body (1).

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