Depth-adjustable electric circular saw

Abstract

The utility model discloses a depth-adjustable electric circular saw which comprises a machine body, a protective cover is fixedly connected to the machine body, a blade is rotatably connected into the protective cover, a movable gap exists between the protective cover and the blade, a push plate is slidably connected into the movable gap, an adjusting bolt is rotatably connected to the protective cover, and a mounting plate is fixedly connected to the adjusting bolt. A plurality of measuring rods are connected to the mounting plate in a sliding manner, so that when the depth of the blade is adjusted, the adjusting bolt is rotated, and at the moment, the push plate which is propped against the adjusting bolt slides along with the rotation of the adjusting bolt and pushes the blade to slide during sliding, so that the purpose of adjusting the depth of the blade is achieved; and in the rotating process of the adjusting bolt, the measuring rod slides, so that scales exposed on the measuring rod are changed, observation is better, repeated adjustment is avoided, and the convenience of blade depth adjustment is improved.

Description

Technical Field

[0001] The utility model belongs to the field of cutting tools and relates to an electric circular saw, in particular to a depth-adjustable electric circular saw. Background Art

[0002] An electric circular saw is a tool that uses a single-phase series-wound motor as its power source, which in turn drives the saw blade through a transmission mechanism. It is characterized by safety, reliability, and high efficiency. The saw features a portable design and primarily consists of a motor, reduction gearbox, protective cover, adjustment mechanism, base plate, handle, switch, non-rewirable plug, and circular saw blade.

[0003] For example, the electric circular saw with publication number CN217531114U includes a saw blade, a motor, a fan and a casing. The saw blade is used to cut the workpiece through its own rotation; the motor is used to drive the saw blade to rotate; the fan is connected to the motor in a transmission manner; the casing includes a main shell and a guide member, the interior of the main shell is provided with an installation cavity, the motor and the fan are arranged in the installation cavity, the main shell is provided with an air outlet, the installation cavity is connected to the outside world through the air outlet, the guide member is arranged at the air outlet and is connected to the main shell, and the guide member guides the airflow generated by the fan to blow toward the saw blade.

[0004] When the electric circular saw needs to cut boards of different depths, the depth is usually adjusted by rotating the blade and the motor used to drive the blade to rotate. However, this method requires manual control of the depth during adjustment, so there is inaccurate control during adjustment, which requires multiple debugging, which is more troublesome. Utility Model Content

[0005] The utility model provides a depth-adjustable electric circular saw, which can accurately adjust the cutting depth of a blade.

[0006] The technical solution adopted by the present invention to solve the above-mentioned technical problems is: a depth-adjustable electric circular saw, comprising a body, a protective cover fixedly connected to the body, a blade rotatably connected in the protective cover, a movable gap between the protective cover and the blade, a push plate slidably connected in the movable gap to form an abutment with the blade, an adjusting bolt rotatably connected to the protective cover with one end extending into the movable gap and forming an abutment with the push plate, when the adjusting bolt is rotated, the push plate pushes the blade to slide, a mounting plate fixedly connected to the adjusting bolt, a measuring rod slidably connected to the mounting plate, the bottom end of the measuring rod abuts against the protective cover, and when the adjusting bolt is rotated, the measuring rod slides and performs measurement.

[0007] A further preferred technical solution of the utility model is: a fixing rod is fixedly connected to the mounting plate, a sliding groove is provided in the fixing rod, a sliding rod is slidably connected in the sliding groove, and a plurality of slots are provided on the top surface of the protective cover for facilitating the insertion of the bottom end of the sliding rod, and the plurality of slots and an adjusting bolt form a circular array with a center of a circle. When the adjusting bolt needs to be rotated, the sliding rod is slid upward and the sliding rod is separated from the slot.

[0008] A further preferred technical solution of the present invention is: a connecting plate is commonly connected to the two sliding rods, and the measuring rod passes through the connecting plate to form abutment with the top surface of the protective cover.

[0009] A further preferred technical solution of the present invention is: a spring 1 for pushing the slide rod to slide is fixedly connected in each of the slide grooves, and when the connecting plate is slid upward, the spring 1 is deformed.

[0010] A further preferred technical solution of the present invention is: a groove is provided on the mounting plate to facilitate the sliding of the measuring rod, and the top end of the measuring rod slides in the groove.

[0011] A further preferred technical solution of the present invention is that a second spring is fixedly connected in the groove and is used to push the measuring rod to slide.

[0012] A further preferred technical solution of the present invention is: a limiting groove is provided on the push plate, and a limiting block sliding in the limiting groove is provided on the inner side wall of the movable gap.

[0013] A further preferred technical solution of the present invention is: a spring three is fixedly connected in the limiting groove and is used to drive the limiting block to reset. When the limiting block slides downward, the spring three is deformed.

[0014] A further preferred technical solution of the utility model is: a motor is provided in the body, the output end of the motor is fixedly connected to a transmission shaft for driving the blade to rotate, a connecting block is fixedly connected between the transmission shaft and the blade, the connecting block is slidably connected to the protective cover, and a strip groove is provided on the protective cover to facilitate the sliding of the connecting block.

[0015] A further preferred technical solution of the present invention is that an elastic pad is fixedly connected to the inner side wall of the push plate and abuts against the side wall of the blade, and a gap exists between the blade and the inner top surface of the push plate.

[0016] Compared with the prior art, the present invention includes a body, a protective cover is fixedly connected to the body, a blade is rotatably connected in the protective cover, there is a movable gap between the protective cover and the blade, a push plate is slidably connected in the movable gap, an adjusting bolt is rotatably connected to the protective cover, a mounting plate is fixedly connected to the adjusting bolt, and a number of measuring rods are slidably connected to the mounting plate. Therefore, when adjusting the depth of the blade, the adjusting bolt is rotated. At this time, as the adjusting bolt rotates, the push plate abutting the adjusting bolt slides with the rotation of the adjusting bolt and pushes the blade to slide during the sliding process, thereby achieving the purpose of adjusting the depth of the blade. In the process of rotating the adjusting bolt, the measuring rod slides, causing the scale exposed on the measuring rod to change, thereby better observing, avoiding repeated adjustments, and improving the convenience of adjusting the blade depth. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be described in further detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will appreciate that these drawings are drawn only for the purpose of explaining the preferred embodiments and should not be construed as limiting the scope of the present invention. Furthermore, unless otherwise specified, the drawings are merely schematic representations of the composition or structure of the depicted objects and may contain exaggerated representations. Furthermore, the drawings are not necessarily drawn to scale.

[0018] Figure 1 The overall structure of the utility model Figure 1 ;

[0019] Figure 2 The overall structure of the utility model Figure 2 ;

[0020] Figure 3 It is an exploded view of the utility model;

[0021] Figure 4 For this utility model Figure 3 Enlarged view of point A in the middle;

[0022] Figure 5 This is a cross-sectional view of the utility model Figure 1 ;

[0023] Figure 6 For this utility model Figure 5 Enlarged view of point B in the middle;

[0024] Figure 7 This is a cross-sectional view of the utility model Figure 2 ;

[0025] Figure 8 For this utility model Figure 7 Enlarged view of point C in the middle.

[0026] In the figure: 1. Machine body; 2. Protective cover; 3. Blade; 4. Push plate; 5. Adjusting bolt; 6. Mounting plate; 7. Motor; 8. Slot; 9. Fixing rod; 10. Slide rod; 11. Spring 1; 12. Measuring rod; 13. Connecting plate; 14. Limiting groove; 15. Transmission flexible shaft; 16. Connecting block; 17. Strip groove; 18. Slide groove; 19. Spring 2; 20. Groove; 21. Spring 3; 22. Limiting block; 23. Elastic pad. DETAILED DESCRIPTION

[0027] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely illustrative and exemplary and should not be construed as limiting the scope of protection of the present invention.

[0028] It should be noted that like reference numerals denote like items in the following drawings, and thus, once an item is defined in one drawing, it may not be further defined or explained in subsequent drawings.

[0029] Figures 1-8 As shown, a depth-adjustable electric circular saw includes a body 1, a protective cover 2 is fixedly connected to the body 1, a blade 3 is rotatably connected to the protective cover 2, a motor 7 is provided in the body 1, a transmission shaft 15 for driving the blade 3 to rotate is fixedly connected to the output end of the motor 7, a connecting block 16 is fixedly connected between the transmission shaft 15 and the blade 3, and the connecting block 16 is slidably connected to the protective cover 2. The protective cover 2 is provided with a strip groove 17 for facilitating the sliding of the connecting block 16.

[0030] Figure 3-Figure 8 As shown, by setting the transmission flexible shaft 15, the blade 3 can slide when the depth of the blade 3 is adjusted. At this time, the connecting block 16 slides in the strip groove 17, preventing the transmission flexible shaft 15 from driving the blade 3 to shake, thereby limiting the range of movement of the blade 3. When the blade 3 slides, the transmission flexible shaft 15 is deformed due to the force, thereby facilitating the adjustment of the blade 3, and the transmission flexible shaft 15 can also drive the blade 3 to rotate normally.

[0031] Figure 3-Figure 8 As shown, there is a movable gap between the protective cover 2 and the blade 3, in which a push plate 4 is slidably connected to form abutment with the blade 3, and an elastic pad 23 is fixedly connected to the inner wall of the push plate 4 to form abutment with the side wall of the blade 3.

[0032] Figure 3-Figure 8 As shown, the blade 3 can be clamped by the elastic pad 23, thereby better driving the blade 3 to slide, and since there is a gap between the blade 3 and the inner top surface of the push plate 4, and the elastic pad 23 is elastic, the normal rotation of the blade 3 can be ensured.

[0033] Figure 3-Figure 8As shown, the protective cover 2 is rotatably connected to an adjusting bolt 5 with one end extending into the movable gap and forming abutment with the push plate 4. When the adjusting bolt 5 rotates, the push plate 4 pushes the blade 3 to slide. A limit groove 14 is provided on the push plate 4, and a limit block 22 sliding in the limit groove 14 is provided on the inner side wall of the movable gap. A spring three 21 is fixedly connected in the limit groove 14 for driving the limit block 22 to reset. When the limit block 22 slides downward, the spring three 21 is deformed.

[0034] Figure 3-Figure 8 As shown, when adjusting the cutting depth of the blade 3, the adjusting bolt 5 is rotated. At this time, the adjusting bolt 5 gradually penetrates into the movable gap, and the push plate 4 that always forms abutment with the adjusting bolt 5 pushes the blade 3 to slide gradually downward under the pressure of the adjusting bolt 5. At this time, the limit block 22 is located in the limit groove 14 and also slides, and the spring three 21 is deformed, and the connecting block 16 for connecting the blade 3 and the transmission flexible shaft 15 is also located in the strip groove 17 and slides, and the transmission flexible shaft 15 is also deformed until it is adjusted to the appropriate cutting depth. Stop rotating the plate adjusting bolt 5. This design facilitates the adjustment of the cutting depth of the blade 3, and the operation is convenient and fast, and easy to implement.

[0035] Figure 3-Figure 8 As shown, when the adjusting bolt 5 is rotated in the reverse direction to gradually extend the movable gap, the deformed spring three 21 can drive the limit block 22 and the push plate 4 fixedly connected to the limit block 22 to gradually slide upward. At the same time, the elastic pad 23 on the push plate 4 clamps the blade 3 and slides upward together, thereby achieving a reset effect, further facilitating the reverse adjustment of the cutting depth of the blade 3.

[0036] Figure 3-Figure 8 As shown, a fixing rod 9 is fixedly connected to the mounting plate 6, a sliding groove 18 is provided in the fixing rod 9, a sliding rod 10 is slidably connected in the sliding groove 18, and a spring 11 for pushing the sliding rod 10 to slide is fixedly connected in each sliding groove 18. When the connecting plate 13 is slid upward, the spring 11 is deformed, and a plurality of slots 8 are provided on the top surface of the protective cover 2 for facilitating the insertion of the bottom end of the sliding rod 10. The plurality of slots 8 and the adjusting bolt 5 form a circular array with a center of a circle. When the adjusting bolt 5 needs to be rotated, the sliding rod 10 is slid upward. At this time, the sliding rod 10 is separated from the slot 8.

[0037] Figure 3-Figure 8As shown, before rotating the adjusting bolt 5, slide the slide bar 10 upward. At this time, the slide bar 10 gradually slides into the slide groove 18 and the spring 11 is deformed due to the squeezing of the slide bar 10 until the bottom end of the slide bar 10 is separated from the slot 8. At this time, the fixing of the adjusting bolt 5 is released, and the adjusting bolt 5 can be further rotated. After the adjustment is completed, the force applied to the slide bar 10 is canceled. At this time, the deformed spring 11 can push the slide bar 10 to slide downward, thereby getting stuck in the two opposite slots 8. At this time, the fixing rod 9 can limit the rotation of the adjusting bolt 5, thereby preventing the adjusting bolt 5 from rotating when the electric circular saw is in use.

[0038] Figure 3-Figure 8 As shown, the two slide rods 10 are connected to a connecting plate 13. When the limit of the contact adjusting bolt 5 is reached, the fingers are placed on the connecting plate 13 and pressed upwards. At this time, the two slide rods 10 can be driven to slide at the same time. This design not only plays the role of sliding the two slide rods 10 at the same time, but also makes it easier for the fingers to apply force, thereby improving the convenience of operation.

[0039] Figure 3-Figure 8 As shown, a mounting plate 6 is fixedly connected to the adjusting bolt 5, and a measuring rod 12 is slidably connected to the mounting plate 6. The measuring rod 12 is provided with a scale, and a groove 20 is opened on the mounting plate 6 to facilitate the sliding of the measuring rod 12. The top end of the measuring rod 12 slides in the groove 20, and a spring 19 is fixedly connected in the groove 20 for pushing the measuring rod 12 to slide. The measuring rod 12 passes through the connecting plate 13 and forms abutment with the top surface of the protective cover. When the adjusting bolt 5 is rotated, the measuring rod 12 slides and measures.

[0040] Figure 3-Figure 8 As shown, before rotating the adjusting bolt 5 to gradually penetrate into the movable gap, first remember the scale number exposed on the measuring rod 12 closest to the mounting plate 6 in the initial state, and then rotate the adjusting bolt 5. As the adjusting bolt 5 rotates, the distance between the mounting plate 6 and the protective cover decreases. At this time, the measuring rod 12 gradually penetrates into the groove 20 under the push of the protective cover and the spring 2 19 is deformed. At this time, observe the scale exposed on the measuring rod 12 and add or subtract it from the scale number recorded in the initial state until the calculated lock value is the depth that needs to be adjusted. At this time, you can stop rotating the adjusting bolt 5. This design can facilitate viewing the cutting depth after the blade 3 is adjusted, thereby avoiding repeated adjustments and improving the convenience of operation.

[0041] The above describes the depth-adjustable electric circular saw provided by the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The above examples are intended only to facilitate understanding of the present invention and its core concepts. It should be noted that those skilled in the art may, without departing from the principles of the present invention, make various improvements and modifications to the present invention, and such improvements and modifications fall within the scope of protection of the claims of the present invention.

Claims

1. A depth-adjustable electric circular saw, comprising a body, characterized in that: A protective cover is fixedly connected to the machine body, and a blade is rotatably connected inside the protective cover. There is a movable gap between the protective cover and the blade, and a push plate is slidably connected in the movable gap to form an abutment with the blade. An adjusting bolt with one end extending into the movable gap and forming an abutment with the push plate is rotatably connected to the protective cover. When the adjusting bolt is rotated, the push plate pushes the blade to slide. A mounting plate is fixedly connected to the adjusting bolt, and a measuring rod is slidably connected to the mounting plate. The bottom end of the measuring rod abuts against the protective cover. When the adjusting bolt is rotated, the measuring rod slides and performs measurement.

2. The depth-adjustable electric circular saw according to claim 1, characterized in that: A fixing rod is fixedly connected to the mounting plate, a sliding groove is provided in the fixing rod, a sliding rod is slidably connected in the sliding groove, and a plurality of slots are provided on the top surface of the protective cover for the bottom end of the sliding rod to be inserted, and the plurality of slots and an adjusting bolt form a circular array with a center circle. When the adjusting bolt needs to be rotated, the sliding rod is slid upward and the sliding rod is separated from the slot.

3. The depth-adjustable electric circular saw according to claim 2, characterized in that: The two sliding rods are commonly connected with a connecting plate, and the measuring rod passes through the connecting plate to form abutment with the top surface of the protective cover.

4. The depth-adjustable electric circular saw according to claim 2, characterized in that: A spring 1 for pushing the slide rod to slide is fixedly connected in each of the slide grooves. When the connecting plate slides upward, the spring 1 is deformed.

5. The depth-adjustable electric circular saw according to claim 1, characterized in that: The mounting plate is provided with a groove for facilitating the sliding of the measuring rod, and the top end of the measuring rod slides in the groove.

6. The depth-adjustable electric circular saw according to claim 5, characterized in that: A second spring is fixedly connected in the groove and is used to push the measuring rod to slide.

7. The depth-adjustable electric circular saw according to claim 1, characterized in that: The push plate is provided with a limiting groove, and the inner side wall of the movable gap is provided with a limiting block sliding in the limiting groove.

8. The depth-adjustable electric circular saw according to claim 7, characterized in that: A spring three is fixedly connected in the limiting groove and is used to drive the limiting block to reset. When the limiting block slides downward, the spring three is deformed.

9. The depth-adjustable electric circular saw according to claim 1, characterized in that: A motor is provided in the body, and a transmission shaft for driving the blade to rotate is fixedly connected to the output end of the motor. A connecting block is fixedly connected between the transmission shaft and the blade, and the connecting block is slidably connected to the protective cover. A strip groove is provided on the protective cover to facilitate the sliding of the connecting block.

10. The depth-adjustable electric circular saw according to claim 1, characterized in that: An elastic pad is fixedly connected to the inner side wall of the push plate and abuts against the side wall of the blade. There is a gap between the blade and the inner top surface of the push plate.

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