Circular saw capable of improving safety

Abstract

The utility model discloses a circular saw capable of improving safety, and relates to the technical field of circular saws, the circular saw comprises a machine body, the lower end of the machine body is fixedly connected with an auxiliary mechanism, one side of the machine body is rotatably connected with a saw blade, one side of the saw blade is fixedly connected with a safety mechanism, the safety mechanism comprises a connecting disc, and one end of the connecting disc is fixedly connected with a transmission shaft; a connecting piece is rotatably connected to the outer surface of the rotating disc; a connecting shaft is rotatably connected to the upper end of the connecting piece; a first connecting block is rotatably connected to one end of the connecting shaft; a speed reducing piece is fixedly connected to the lower end of the first connecting block; one end of the speed reducing part is fixedly connected with a connecting arm, the upper end of the connecting arm is fixedly connected with a second connecting block, the cutting machine can stop rotating immediately after being used, and the function that when a human body accidentally touches a circular saw, the human body is prevented from being hurt to the body of a user is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of circular saws, and in particular to a circular saw with improved safety. Background Art

[0002] With the development of modern mechanical processing industry, the requirements for cutting quality and precision are constantly increasing, and the requirements for improving production efficiency, reducing production costs, and having highly intelligent automatic cutting functions are also increasing. The development of CNC cutting machines must adapt to the requirements of the development of modern mechanical processing industry. Cutting machines are divided into flame cutting machines, plasma cutting machines, laser cutting machines, water cutting machines, etc.

[0003] According to the announcement number: CN201086329Y, a circular saw with a dust cover is disclosed. This technology discloses "a motor, a saw blade rotated by the motor; provided on a lower part of the main body; a dust cover, which covers both sides of a part of the saw blade and forms a space and has an opening, etc., which has the effect that the debris and dust formed by the circular saw will not fly away and are guided to the space inside the dust cover by the airflow formed when the saw blade is sawing."

[0004] With regard to the above-mentioned related technologies, the inventor believes that during the use of this handheld cutting machine, the circular saw will not stop rotating immediately after it stops being used due to its high-speed rotation characteristics. At this time, if the human body accidentally touches the circular saw or the circular saw touches other objects, it will cause harm to the user's body and straight cutting cannot be guaranteed during straight cutting. The worker subconsciously adjusts the device, and the rapidly rotating saw blade causes damage during the adjustment, resulting in safety risks. Utility Model Content

[0005] The purpose of the present application is to provide a circular saw with improved safety, so as to improve the situation that the cutting machine does not stop rotating immediately after use. If the human body accidentally touches the circular saw at this time, it will cause harm to the user's body and straight cutting cannot be guaranteed during straight cutting. The worker subconsciously adjusts the device, and the rapidly rotating saw blade causes damage during adjustment, resulting in safety risks.

[0006] The circular saw with improved safety provided by the present application adopts the following technical solutions:

[0007] A circular saw with improved safety comprises a body, the lower end of which is fixedly connected to an auxiliary mechanism, one side of the body is rotatably connected to a saw blade, one side of the saw blade is fixedly connected to a safety mechanism, the safety mechanism comprises a connecting plate, one end of the connecting plate is fixedly connected to a transmission shaft, the outer surface of the transmission shaft is fixedly connected to a reduction plate, one end of the transmission shaft is rotatably connected to a rotating disk, the outer surface of the rotating disk is rotatably connected to a connecting member, the upper end of the connecting member is rotatably connected to a connecting shaft, one end of the connecting shaft is rotatably connected to a first connecting block, the lower end of the first connecting block is fixedly connected to a reduction member, one end of the reduction member is fixedly connected to a connecting arm, the upper end of the connecting arm is fixedly connected to a second connecting block, one end of the connecting arm is fixedly connected to a counterweight block, and one side of the second connecting block is rotatably connected to a fixed seat.

[0008] By adopting the above technical solution, a rapidly rotating saw blade can be decelerated.

[0009] Optionally, the auxiliary mechanism includes a base frame, the upper end of the base frame is fixedly connected to the machine body, movable holes are opened on both sides of the base frame, the inner surfaces of the movable holes are slidably connected with a fixed ruler, one end of the fixed ruler is fixedly connected to a fixed plate, the upper end of the fixed ruler is contact-connected with a fixing piece, and the upper end of the fixing piece is rotatably connected to a fixing bolt, and the upper end of the fixing bolt is fixedly connected to a rotating block.

[0010] By adopting the above technical solution, it can be ensured that the circular saw always moves in a straight line during cutting.

[0011] Optionally, a fixed block is fixedly connected to one side of the rotating disk, and a deceleration control rod is fixedly connected to one side of the fixed block.

[0012] By adopting the above technical solution, the deceleration member can be controlled to decelerate the deceleration disc.

[0013] Optionally, a limiting rod is fixedly connected to one side of the fixing seat, and an outer surface of the limiting rod is in contact with and connected to the connecting arm.

[0014] By adopting the above technical solution, the connection arm is limited in rotation.

[0015] Optionally, a first scale line is fixedly connected to the upper end of the base frame, and a second scale line is fixedly connected to the upper end of the fixed ruler.

[0016] By adopting the above technical solution, the plate can be cut accurately during cutting.

[0017] Optionally, a protective cover is provided on the upper end of the saw blade, and an outer surface of the protective cover is fixedly connected to a fixing seat.

[0018] By adopting the above technical solution, the saw blade can be wrapped to avoid harm to workers during cutting.

[0019] Optionally, the inner surface of the protective cover is slidably connected to a protective shell, and the outer surface of the protective shell is fixedly connected to a moving handle.

[0020] By adopting the above technical solution, the saw blade can be wrapped after cutting is completed.

[0021] Optionally, a start button is fixedly connected to the inner surface of the body, and a power battery is fixedly connected to one side of the body.

[0022] By adopting the above technical solution, the circular saw can be controlled to start and power can be provided to the circular saw at the same time.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. The utility model is provided with a safety mechanism, wherein the reduction plate, the rotating plate, the reduction member and the reduction control lever can realize the function that the cutting machine can stop rotating immediately after use, so as to prevent the user from being injured when the human body accidentally touches the circular saw;

[0025] 2. The utility model is provided with an auxiliary mechanism, wherein the base frame, the fixed ruler, the fixed plate and the fixed parts can ensure that the circular saw can perform straight-line cutting without the need for workers to adjust during operation, thereby avoiding damage caused by the rapidly rotating saw blade and causing safety risks; BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of the utility model.

[0027] Figure 2 It is a schematic diagram of the safety mechanism of the utility model.

[0028] Figure 3 It is a schematic diagram of the auxiliary mechanism of the utility model.

[0029] In the figure, 1. body; 11. start button; 12. power battery; 2. safety mechanism; 21. connecting plate; 22. transmission shaft; 23. deceleration plate; 24. rotating plate; 241. fixed block; 242. deceleration control lever; 25. connecting piece; 26. first connecting block; 261. connecting shaft; 27. deceleration piece; 28. connecting arm; 281. second connecting block; 282. counterweight; 29. ​​fixing seat; 291. limiting rod; 3. auxiliary mechanism; 31. chassis; 311. first scale line; 32. moving hole; 33. fixed ruler; 331. second scale line; 34. fixing plate; 35. fixing piece; 36. fixing bolt; 37. rotating block; 4. saw blade; 41. protective cover; 5. protective shell; 51. moving handle. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1 -Attached Figure 3 , further details of this application are given.

[0031] Example 1

[0032] Circular saws with improved safety, see Figure 1 and reference Figure 2 , comprising a body 1, the lower end of which is fixedly connected to an auxiliary mechanism 3, one side of the body 1 is rotatably connected to a saw blade 4, one side of the saw blade 4 is fixedly connected to a safety mechanism 2, the safety mechanism 2 comprises a connecting disk 21, one end of the connecting disk 21 is fixedly connected to a transmission shaft 22, the outer surface of the transmission shaft 22 is fixedly connected to a reduction disk 23, one end of the transmission shaft 22 is rotatably connected to a rotating disk 24, the outer surface of the rotating disk 24 is rotatably connected to a connecting member 25, the upper end of the connecting member 25 is rotatably connected to a connecting shaft 261, one end of the connecting shaft 261 is rotatably connected to a first connecting block 26, the lower end of the first connecting block 26 is fixedly connected to a reduction member 27, one end of the reduction member 27 is fixedly connected to a connecting arm 28, the upper end of the connecting arm 28 is fixedly connected to a second connecting block 281, one end of the connecting arm 28 is fixedly connected to a counterweight block 282, and one side of the second connecting block 281 is rotatably connected to a fixed seat 29.

[0033] Reference Figure 2 A fixing block 241 is fixedly connected to one side of the rotating disk 24 , and a deceleration control rod 242 is fixedly connected to one side of the fixing block 241 .

[0034] Reference Figure 2 A limiting rod 291 is fixedly connected to one side of the fixing seat 29 , and an outer surface of the limiting rod 291 is in contact with and connected to the connecting arm 28 .

[0035] Reference Figure 1The upper end of the saw blade 4 is sleeved with a protective cover 41 , and the outer surface of the protective cover 41 is fixedly connected to the fixing seat 29 .

[0036] Reference Figure 1 The inner surface of the protection cover 41 is slidably connected to a protection shell 5 , and the outer surface of the protection shell 5 is fixedly connected to a moving handle 51 .

[0037] Reference Figure 1 A start button 11 is fixedly connected to the inner surface of the body 1 , and a power battery 12 is fixedly connected to one side of the body 1 .

[0038] The implementation principle of the embodiment of the present application is: after the cutting is completed and the start button 11 is released, the deceleration control rod 242 is held and rotated downward, the deceleration control rod 242 rotates to drive the fixed block 241 to rotate, the fixed block 241 rotates to drive the rotating disk 24 to rotate, the rotating disk 24 rotates to drive the connecting member 25 to move, the connecting member 25 moves to drive the connecting shaft 261 to move, the connecting shaft 261 moves to drive the first connecting block 26 to move, the first connecting block 26 moves to drive the deceleration member 27 to move, the deceleration member 27 moves and is in close contact with the deceleration disk 23 to decelerate it, the deceleration disk 23 decelerates and drives the saw blade 4 to decelerate, when the deceleration is completed, the deceleration control rod 242 is released, and under the action of the counterweight block 282, the connecting arm 28 rotates and resets on the fixed seat 29 under the action of the second connecting block 281, and resets until the connecting arm 28 contacts the limit rod 291, and when the saw blade 4 stops rotating, under the action of the moving handle 51, the protective shell 5 moves along the protective cover 41 to protect the lower end of the saw blade 4.

[0039] Example 2

[0040] The difference between this embodiment and embodiment 1 is that:

[0041] Reference Figure 3 The auxiliary mechanism 3 includes a base frame 31, the upper end of which is fixedly connected to the machine body 1, and movable holes 32 are opened on both sides of the base frame 31. The inner surface of the movable hole 32 is slidably connected with a fixed ruler 33, one end of which is fixedly connected with a fixed plate 34, the upper end of the fixed ruler 33 is contacted and connected with a fixing member 35, and the upper end of the fixing member 35 is rotatably connected with a fixing bolt 36, and the upper end of the fixing bolt 36 is fixedly connected with a rotating block 37, so that the fixed ruler 33 moves in the movable hole 32 on the base frame 31, and the movement of the fixed ruler 33 drives the fixing plate 34 to move, so that the fixing plate 34 is tightly attached to the wooden board, and then the rotating block 37 is rotated, and the rotating block 37 rotates to drive the fixing bolt 36 to rotate, and the fixing bolt 36 rotates on the fixing member 35 to fix the fixed ruler 33.

[0042] Reference Figure 3The upper end of the base frame 31 is fixedly connected with a first scale line 311 , and the upper end of the fixed ruler 33 is fixedly connected with a second scale line 331 . The fixed ruler 33 moves under the action of the first scale line 311 and the second scale line 331 .

[0043] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A circular saw with improved safety, comprising a body (1), characterized in that: The lower end of the machine body (1) is fixedly connected to an auxiliary mechanism (3), one side of the machine body (1) is rotatably connected to a saw blade (4), and one side of the saw blade (4) is fixedly connected to a safety mechanism (2); The safety mechanism (2) comprises a connecting disk (21), one end of the connecting disk (21) is fixedly connected to a transmission shaft (22), the outer surface of the transmission shaft (22) is fixedly connected to a speed reduction disk (23), one end of the transmission shaft (22) is rotatably connected to a rotating disk (24), the outer surface of the rotating disk (24) is rotatably connected to a connecting member (25), the upper end of the connecting member (25) is rotatably connected to a connecting shaft (261), one end of the connecting shaft (261) is rotatably connected to a first connecting block (26), the lower end of the first connecting block (26) is fixedly connected to a speed reduction member (27), one end of the speed reduction member (27) is fixedly connected to a connecting arm (28), the upper end of the connecting arm (28) is fixedly connected to a second connecting block (281), one end of the connecting arm (28) is fixedly connected to a counterweight block (282), and one side of the second connecting block (281) is rotatably connected to a fixed seat (29).

2. The circular saw with improved safety according to claim 1, characterized in that: The auxiliary mechanism (3) comprises a base frame (31), the upper end of the base frame (31) is fixedly connected to the machine body (1), movable holes (32) are opened on both sides of the base frame (31), the inner surface of the movable hole (32) is slidably connected with a fixed ruler (33), one end of the fixed ruler (33) is fixedly connected to a fixed plate (34), the upper end of the fixed ruler (33) is contact-connected with a fixing member (35), and the upper end of the fixing member (35) is rotatably connected to a fixing bolt (36), and the upper end of the fixing bolt (36) is fixedly connected to a rotating block (37).

3. The circular saw with improved safety according to claim 1, characterized in that: A fixed block (241) is fixedly connected to one side of the rotating disk (24), and a deceleration control rod (242) is fixedly connected to one side of the fixed block (241).

4. The circular saw with improved safety according to claim 1, characterized in that: A limiting rod (291) is fixedly connected to one side of the fixing seat (29), and an outer surface of the limiting rod (291) is in contact with and connected to the connecting arm (28).

5. The circular saw with improved safety according to claim 2, characterized in that: The upper end of the base frame (31) is fixedly connected to a first scale line (311), and the upper end of the fixed ruler (33) is fixedly connected to a second scale line (331).

6. The circular saw with improved safety according to claim 1, characterized in that: The upper end of the saw blade (4) is sleeved with a protective cover (41), and the outer surface of the protective cover (41) is fixedly connected to the fixing seat (29).

7. The circular saw with improved safety according to claim 6, characterized in that: The inner surface of the protection cover (41) is slidably connected to a protection shell (5), and the outer surface of the protection shell (5) is fixedly connected to a moving handle (51).

8. The circular saw with improved safety according to claim 1, characterized in that: A start button (11) is fixedly connected to the inner surface of the machine body (1), and a power battery (12) is fixedly connected to one side of the machine body (1).

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