Mini cutting saw

Abstract

The utility model discloses a mini cutting saw which comprises a main body base, a movable protective cover assembly rotationally connected with the main body base is arranged on the main body base, a locking support is fixedly installed on the main body base, and a locking bolt for fixing the locking support and the movable protective cover assembly is arranged between the locking support and the movable protective cover assembly. A fixed protective cover detachably connected with the movable protective cover assembly is arranged in the movable protective cover assembly, and a locking shifting button and a reset spring are arranged in the movable protective cover assembly. The locking shifting button is in sliding connection with the movable protective cover assembly, and when the locking shifting button is pushed, the locking shifting button moves relative to the fixed protective cover. According to the utility model, the fixed shield is connected with the host, the detachable movable shield assembly is arranged on the outer layer of the fixed shield, and the movable shield assembly is convenient to rotate, so that the use is more flexible and convenient, and the universality is better.

Description

Technical Field

[0001] This utility model belongs to the field of cutting saw technology, specifically relating to a mini cutting saw. Background Technology

[0002] A cutting saw is a common power tool. The blades of a cutting saw rotate at high speed during operation, and a protective cover is usually installed on the outer layer of the blade. Existing patent CN206011305U discloses a novel handheld cutting saw, including a protective cover, a motor housing, a handle, a control box, a shaft stabilizer, a rotating shaft, and a drive rod. A power cord is installed on top of the main body, and a handle is installed to the left of the power cord. The handle surface is fitted with anti-slip grooves, and a power start button is installed below the anti-slip grooves. The motor housing is installed below the handle, and a protective cover is installed to the left of the motor housing. A fixing clamp is installed below the motor housing. A cutting disc is installed below the protective cover, and a cutting blade is mounted on the surface of the cutting disc. A motor is installed inside the main body, and a shaft stabilizer is installed below the motor. A rotating shaft is installed below the shaft stabilizer, and a drive rod is installed below the rotating shaft. Existing cutting saws often have protective covers connected to the main body, requiring molds to be made to fit the main body, resulting in high manufacturing costs. Furthermore, the protective cover is not easily detached from the main body, hindering blade replacement. Therefore, a mini cutting saw needs to be designed to overcome these difficulties. Summary of the Invention

[0003] This invention addresses the problems existing in the prior art by designing a mini cutting saw. This invention connects the main unit through a fixed cover, and the outer layer of the fixed cover is provided with a detachable movable cover assembly. The movable cover assembly is easy to rotate, making it more flexible and convenient to use, and has better versatility.

[0004] The objective of this invention is achieved through the following technical solution: a mini cutting saw includes a main base, a movable guard assembly rotatably connected to the main base, a locking bracket fixedly installed on the main base, and a locking bolt fixing the locking bracket and the movable guard assembly; a fixed guard detachably connected to the movable guard assembly is provided inside the movable guard assembly, and a locking knob and a return spring are provided inside the movable guard assembly; the locking knob is slidably connected to the movable guard assembly, and the locking knob moves relative to the fixed guard when the locking knob is pushed.

[0005] Preferably, the movable cover assembly includes a movable cover body and a cover plate; a pin is provided between the movable cover body and the main base to hinge the two together; the movable cover body and the cover plate are fixedly connected and fixed together by screws; the cover plate is arranged adjacent to the locking bracket; the locking lever is slidably installed in the cover plate; and the reset spring is arranged between the locking lever and the inner wall of the cover plate.

[0006] Preferably, the outer contour of the cover plate and the outer contour of the locking bracket are adapted to each other, and the locking bracket is arc-shaped; the cover plate is provided with threaded holes for inserting locking bolts.

[0007] Preferably, the cover plate has a guide groove for installing a reset spring, and the locking knob has a pushing part that extends into the guide groove; one end of the reset spring abuts against the pushing part, and the other end of the reset spring abuts against the inner wall of the guide groove.

[0008] Preferably, the movable cover body is provided with a limiting groove, and the locking knob is provided with a limiting protrusion. When the locking knob slides relative to the cover plate, the limiting protrusion extends and retracts relative to the limiting groove. The movable cover body is provided with a fixed cover, and the movable cover body is provided with a support part. One end of the fixed cover abuts against the support part, and the other end of the fixed cover abuts against the limiting protrusion. The fixed cover is connected to the main unit, and the main unit is mounted on the main body base.

[0009] Preferably, the movable cover body is provided with a plurality of mounting protrusions, the cover plate is provided with a mounting post, the mounting protrusions are installed in the mounting post and the two are coaxially arranged; a screw is provided between the mounting post and the mounting protrusion to fix the two.

[0010] Preferably, the movable protective cover body has a limiting opening on its side, and the locking knob has a toggle part that extends out of the limiting opening.

[0011] Preferably, the movable protective cover assembly is made of plastic, and the fixed protective cover is made of metal.

[0012] The movable cover assembly can rotate relative to the main base, and after rotation, it can separate from the fixed cover. The rotation angle of the movable cover assembly is limited by a locking bracket and a locking bolt, which is installed in a threaded hole. In the default initial state, the locking knob is close to the fixed cover, and the return spring is compressed. At this time, one end of the fixed cover abuts against the support, and the other end abuts against the limiting protrusion of the locking knob, thus locking the fixed cover inside the movable cover body, preventing separation. The fixed cover is connected to the main unit (not shown in the attached diagram). To unlock the fixed cover, push the locking knob away from it, causing the fixed cover to lose its limiting position, allowing separation between the fixed and movable cover bodies. Releasing the locking knob then automatically returns it to its default initial position under the automatic return spring.

[0013] Compared with the prior art, the present invention has the following advantages: 1. The movable cover assembly can rotate relative to the main body base and is fixed by locking brackets and locking bolts, so that the movable cover assembly can rotate and separate relative to the fixed cover, making it more convenient to use; 2. The movable cover assembly and the fixed cover are limited by locking knobs, and can be easily unlocked by pushing the locking knobs, so that the movable cover assembly and the fixed cover can be separated from each other, and unlocking is convenient and quick; 3. The fixed cover is connected to the main unit. Due to the separate design of the movable cover assembly and the fixed cover, it is convenient to independently mold the movable cover assembly and the fixed cover. Attached Figure Description

[0014] Figure 1 This is a perspective view of the present utility model;

[0015] Figure 2 This is a perspective view of the present invention from another angle;

[0016] Figure 3 This is an exploded view of the present invention;

[0017] Figure 4 A three-dimensional view of the active protective shield body;

[0018] Figure 5 This is a diagram of the internal structure of the present invention;

[0019] Figure 6 This is a three-dimensional view of the cover plate;

[0020] Figure 7 A 3D view of the locking lever;

[0021] The markings in the diagram are: 1. Main base; 2. Movable cover assembly; 21. Movable cover body; 22. Cover plate; 23. Threaded hole; 24. Guide groove; 25. Limiting groove; 26. Support part; 27. Mounting protrusion; 28. Mounting column; 29. ​​Limiting opening; 3. Locking bracket; 4. Locking bolt; 5. Fixed cover; 6. Locking knob; 61. Pushing part; 62. Actuating part; 63. Limiting protrusion; 7. Return spring; 8. Pin. Detailed Implementation

[0022] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings:

[0023] like Figures 1 to 7As shown, this embodiment discloses a mini cutting saw, including a main base 1, a movable guard assembly 2 rotatably connected to the main base 1, a locking bracket 3 fixedly installed on the main base 1, and a locking bolt 4 fixing the locking bracket 3 and the movable guard assembly 2; a fixed guard 5 detachably connected to the movable guard assembly 2 is provided inside the movable guard assembly 2, and a locking knob 6 and a return spring 7 are provided inside the movable guard assembly 2; the locking knob 6 is slidably connected to the movable guard assembly 2, and when the locking knob 6 is pushed, the locking knob 6 moves relative to the fixed guard 5.

[0024] The movable cover assembly 2 includes a movable cover body 21 and a cover plate 22. A pin 8 is provided between the movable cover body 21 and the main base 1 to hinge them. The movable cover body 21 and the cover plate 22 are fixedly connected by screws. The cover plate 22 is adjacent to the locking bracket 3. The locking knob 6 is slidably installed inside the cover plate 22. The return spring 7 is disposed between the locking knob 6 and the inner wall of the cover plate 22. The outer contour of the cover plate 22 matches the outer contour of the locking bracket 3, which is arc-shaped. The cover plate 22 has threaded holes 23 for inserting locking bolts 4. The cover plate 22 has a guide groove 24 for installing the return spring 7. The locking knob 6 has a pushing part 61 extending into the guide groove 24. One end of the return spring 7 abuts against the pushing part 61, and the other end abuts against the inner wall of the guide groove 24. The movable cover body 21 is provided with a limiting groove 25, and the locking knob 6 is provided with a limiting protrusion 63. When the locking knob 6 slides relative to the cover plate 22, the limiting protrusion 63 extends and retracts relative to the limiting groove 25. A fixed cover 5 is provided inside the movable cover body 21, and a support part 26 is provided inside the movable cover body 21. One end of the fixed cover 5 abuts against the support part 26, and the other end of the fixed cover 5 abuts against the limiting protrusion 63. The fixed cover 5 is connected to the main unit, and the main unit is mounted on the main body base 1. The movable cover body 21 is provided with several mounting protrusions 27, and a mounting post 28 is provided inside the cover plate 22. The mounting protrusions 27 are installed inside the mounting post 28, and the two are coaxially arranged. A screw is provided between the mounting post 28 and the mounting protrusions 27 to fix them. A limiting opening 29 is provided on the side of the movable cover body 21, and a toggle part 62 is provided on the locking knob 6, which protrudes from the limiting opening 29. The movable protective cover assembly 2 is made of plastic, while the fixed protective cover 5 is made of metal.

[0025] The specific operation process of this embodiment is as follows: the movable cover assembly 2 can rotate relative to the main body base 1, and after rotating, the movable cover assembly 2 can separate from the fixed cover 5; the rotation angle of the movable cover assembly 2 can be limited by the locking bracket 3 and the locking bolt 4, and the locking bolt 4 is installed in the threaded hole 23. In the default initial state, the locking knob 6 is close to the fixed cover 5, and the return spring 7 is in a compressed state; at this time, one end of the fixed cover 5 abuts against the support part 26, and the other end of the fixed cover 5 abuts against the limiting protrusion 63 of the locking knob 6, so the fixed cover 5 will be stuck in the movable cover body 21, and the fixed cover 5 and the movable cover body 21 cannot be separated at this time. The fixed cover 5 is connected to the main unit, which is not shown in the figure; when it is necessary to unlock the fixed cover 5, push the locking knob 6 to move it away from the fixed cover 5, so that the fixed cover 5 will lose its limiting position, and the fixed cover 5 and the movable cover body 21 can separate from each other. Then, when the locking lever 6 is released, the locking lever 6 automatically returns to its default initial position under the automatic action of the return spring 7.

[0026] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A mini cutting saw, comprising a main body base (1), characterized in that, The main base (1) is provided with a movable protective cover assembly (2) rotatably connected thereto. A locking bracket (3) is fixedly installed on the main base (1). A locking bolt (4) is provided between the locking bracket (3) and the movable protective cover assembly (2) to fix the two. A fixed protective cover (5) is provided inside the movable protective cover assembly (2) and is detachably connected thereto. A locking knob (6) and a return spring (7) are provided inside the movable protective cover assembly (2). The locking knob (6) is slidably connected to the movable protective cover assembly (2). When the locking knob (6) is pushed, the locking knob (6) moves relative to the fixed protective cover (5).

2. The mini cutting saw according to claim 1, characterized in that, The movable shield assembly (2) includes a movable shield body (21) and a cover plate (22); a pin (8) is provided between the movable shield body (21) and the main body base (1) to hinge the two; the movable shield body (21) and the cover plate (22) are fixedly connected; the movable shield body (21) and the cover plate (22) are fixed together by screws; the cover plate (22) is arranged adjacent to the locking bracket (3); the locking knob (6) is slidably installed in the cover plate (22); and the reset spring (7) is arranged between the locking knob (6) and the inner wall of the cover plate (22).

3. The mini cutting saw according to claim 2, characterized in that, The outer contour of the cover plate (22) and the outer contour of the locking bracket (3) are adapted to each other, and the locking bracket (3) is arc-shaped; the cover plate (22) is provided with threaded holes (23) for inserting locking bolts (4).

4. The mini cutting saw according to claim 2, characterized in that, The cover plate (22) is provided with a guide groove (24) for installing a reset spring (7), and the locking knob (6) is provided with a pushing part (61), which extends into the guide groove (24); one end of the reset spring (7) abuts against the pushing part (61), and the other end of the reset spring (7) abuts against the inner wall of the guide groove (24).

5. The mini cutting saw according to claim 2, characterized in that, The movable cover body (21) is provided with a limiting groove (25), and the locking knob (6) is provided with a limiting protrusion (63). When the locking knob (6) slides relative to the cover plate (22), the limiting protrusion (63) extends and retracts relative to the limiting groove (25). The movable cover body (21) is provided with a fixed cover (5), and the movable cover body (21) is provided with a support part (26). One end of the fixed cover (5) abuts against the support part (26), and the other end of the fixed cover (5) abuts against the limiting protrusion (63). The fixed cover (5) is connected to the main unit, and the main unit is installed on the main body base (1).

6. The mini cutting saw according to claim 5, characterized in that, The movable cover body (21) is provided with a number of mounting protrusions (27), and the cover plate (22) is provided with mounting posts (28). The mounting protrusions (27) are installed in the mounting posts (28) and the two are coaxially arranged. Screws are provided between the mounting posts (28) and the mounting protrusions (27) to fix the two.

7. The mini cutting saw according to claim 2, characterized in that, The movable protective cover body (21) has a limiting opening (29) on its side, and the locking knob (6) has a toggle part (62) that protrudes from the limiting opening (29).

8. The mini cutting saw according to claim 1, characterized in that, The movable protective cover assembly (2) is made of plastic, and the fixed protective cover (5) is made of metal.

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