Brushless electric circular saw with high cutting efficiency

Abstract

The utility model provides a brushless electric circular saw with high cutting efficiency, which relates to the technical field of brushless electric circular saws, and comprises an electric circular saw main body, a cutting rotating speed adjusting assembly is arranged in the electric circular saw main body, the cutting rotating speed adjusting assembly comprises a cutting gear, the front end of the cutting gear is connected with a cutting blade, and the cutting blade is connected with a motor. The two sides of the cutting gear are connected with a small gear and a large gear respectively, the outer surface, close to the small gear and the large gear, of the electric circular saw body is connected with two sets of connecting frames, the connecting frames are internally provided with threaded holes, and the threaded holes are internally provided with threaded rods. According to the electric circular saw, when the rotating speed of the cutting piece needs to be adjusted, the motor can be pushed to move by rotating the rotating handle, then the rotating speed of the cutting piece is changed through switching of the small gear and the large gear, and then the cutting efficiency of the electric circular saw body is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to brushless electric circular saw technical field especially relates to a kind of brushless electric circular saw with high cutting efficiency. BACKGROUND

[0002] Brushless electric circular saw is a kind of electric circular saw using brushless motor technology, with the advantages of high efficiency, energy saving, low noise, long life, etc., widely used in woodworking, decoration, building and other fields.

[0003] Like announcement number: CN104107949B, a kind of electric circular saw, wherein by setting fixed rod, first connecting rod, second connecting rod between shroud and casing form four connecting rod mechanism, so that first connecting rod, second connecting rod drive shroud to carry out stable lifting relative to casing when swinging, to adjust the height of circular saw blade exposed to the bottom of shroud through hole to meet the cutting of circular saw blade under different conditions. The structure of the electric circular saw is simple, and the height of the shroud relative to the casing can be adjusted conveniently during use, so that the circular saw blade is exposed outside the shroud for cutting, which has high reliability and good use performance.

[0004] The patent can make the circular saw blade exposed outside the shroud for cutting, which has high reliability and good use performance, but the existing electric circular saw cannot adjust the speed of the cutting blade according to the time, thereby affecting the cutting efficiency of the electric circular saw.

[0005] Therefore, we propose a new type of brushless electric circular saw with high cutting efficiency. CONTENT OF UTILITY MODEL

[0006] The utility model aims at solving the problem that the existing electric circular saw in the prior art cannot adjust the speed of the cutting blade according to the actual situation, thereby affecting the cutting efficiency of the electric circular saw.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a kind of brushless electric circular saw with high cutting efficiency, including electric circular saw main body, the inside of electric circular saw main body is provided with cutting speed adjusting assembly, the cutting speed adjusting assembly includes cutting gear, the front end of cutting gear is connected with cutting blade, the two sides of cutting gear are connected with pinion and gear respectively, the outer surface of electric circular saw main body is connected with two groups of connecting frames close to pinion and gear, the inside of connecting frame is equipped with connecting frame, the inside of connecting frame is equipped with screw hole, the inside of screw hole is provided with threaded rod, the two ends of threaded rod are connected with handlebar and bearing respectively, the side of bearing is connected with motor.

[0008] Further, the output end of the motor is connected with a fixed plug that matches the fixed slot, and the cutting gear is meshed with the pinion and the gear.

[0009] Further, the threaded rod and the handle are in threaded connection, and the threaded rod and the bearing are in rotation connection.

[0010] Further, the top of the electric circular saw body is provided with a disassembly assembly, which comprises four groups of side ears, and the top of each group of side ears is connected with a top cover.

[0011] Further, grooves are formed at the four corners of the top cover, and a bolt is inserted into each group of grooves.

[0012] Further, the bolt and the side ear are in threaded connection after the bolt penetrates through the groove.

[0013] Further, the position and size of the bolt are matched with the position and size of the side ear.

[0014] Further, the shape of each group of side ears is rectangular, and the top surface of each group of side ears is matched with the top cover.

[0015] Compared with the prior art, the advantages and positive effects of the utility model are that,

[0016] 1. When the rotation speed of the cutting piece needs to be adjusted, the motor can be moved by rotating the handle, and then the rotation speed of the cutting piece is changed by switching the pinion and the gear, thereby improving the cutting efficiency of the electric circular saw body.

[0017] 2. By disassembling the top cover, the maintenance of the internal gears can be realized, so that the gear surface is not gradually worn out for a long time, thereby affecting the meshing precision and transmission efficiency of the gear. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 A three-dimensional structure schematic diagram of the brushless electric circular saw with high cutting efficiency is provided for the utility model;

[0019] Figure 2 Another angle three-dimensional structure schematic diagram of the brushless electric circular saw with high cutting efficiency is provided for the utility model;

[0020] Figure 3 A partial explosion structure schematic diagram of the brushless electric circular saw with high cutting efficiency is provided for the utility model;

[0021] Figure 4 A top cover explosion structure schematic diagram of the brushless electric circular saw with high cutting efficiency is provided for the utility model.

[0022] Legend: 1. Circular saw body; 2. Cutting speed adjustment assembly; 201. Cutting gear; 202. Cutting disc; 203. Pinion; 204. Gear; 205. Fixing slot; 206. Connecting bracket; 207. Threaded hole; 208. Threaded rod; 209. Throttle; 210. Bearing; 211. Motor; 3. Assembly / disassembly assembly; 301. Side lug; 302. Top cover; 303. Slot; 304. Bolt. Detailed Implementation

[0023] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0024] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0025] Example 1, such as Figure 1 - Figure 3 As shown, this utility model provides a brushless circular saw with high cutting efficiency, including a circular saw body 1. A cutting speed adjustment component 2 is installed inside the circular saw body 1. The cutting speed adjustment component 2 includes a cutting gear 201, a cutting blade 202 connected to the front end of the cutting gear 201, and a small gear 203 and a large gear 204 connected to both sides of the cutting gear 201, respectively. Two sets of connecting frames 206 are connected to the outer surface of the circular saw body 1 near the small gear 203 and the large gear 204. The connecting frames 206 have internal openings. The connecting frame 206 has a threaded hole 207 inside, and a threaded rod 208 is provided inside the threaded hole 207. The two ends of the threaded rod 208 are respectively connected to a throttle 209 and a bearing 210. A motor 211 is connected to one side of the bearing 210. The output end of the motor 211 is connected to a fixing block that matches the fixing slot 205. The cutting gear 201 is meshed with the small gear 203 and the large gear 204. The threaded rod 208 and the throttle 209 form a threaded connection, and the threaded rod 208 and the bearing 210 form a rotatable connection.

[0026] The effect achieved by the whole embodiment 1 is that when cutting different materials, the cutting blade 202 can be adjusted to different rotating speeds. When it is necessary to increase the rotating speed of the cutting blade 202, the knob 209 at the rear end of the pinion gear 203 is rotated, so that the knob 209 can drive the threaded rod 208 and the threaded hole 207 to rotate in a threaded manner, thereby pushing the motor 211 to move towards the fixed slot 205 in a threaded manner, so that the fixed plug at the output end of the motor 211 can be inserted into the fixed slot 205 of the pinion gear 203. Then the motor 211 at the rear end of the pinion gear 203 is started, so that the motor 211 can drive the pinion gear 203 to rotate, thereby driving the cutting gear 201 to rotate through the pinion gear 203, thereby achieving the purpose of increasing the rotating speed of the cutting blade 202. When it is necessary to reduce the rotation of the cutting blade 202, the knob 209 is rotated in the opposite direction, so that the motor 211 at the rear end of the pinion gear 203 can move backward and be pulled out of the fixed slot 205. Then the knob 209 at the rear end of the gear wheel 204 is rotated, so that the gear wheel 204 can be rotated by the motor 211 at the rear end. In this way, the rotating speed of the cutting blade 202 can be adjusted according to the time, thereby improving the cutting efficiency of the electric circular saw body 1.

[0027] As shown in embodiments 2, Figure 1 and Figure 4 The top of the electric circular saw body 1 is provided with a disassembly assembly 3. The disassembly assembly 3 includes four groups of side ears 301. The top of each group of side ears 301 is connected with a top cover 302. The four corners of the top cover 302 are provided with slot holes 303. The inside of each group of slot holes 303 is inserted with a bolt 304. The bolt 304 penetrates through the slot hole 303 and is connected with the side ear 301 in a threaded manner. The position and size of the bolt 304 are matched with the position and size of the side ear 301. The shape of each group of side ears 301 is rectangular. The top surface of each group of side ears 301 is attached with the top cover 302.

[0028] The effect achieved by the whole embodiment 2 is that after all the four bolts 304 are removed, the top cover 302 can be opened, and then the maintenance of the gears in the electric circular saw body 1 can be carried out. By disassembling the top cover 302, the maintenance of the gears inside can be realized, so as to prevent the tooth surface of the gears from being gradually worn out for a long time, thereby affecting the meshing accuracy and transmission efficiency of the gears.

[0029] Working principle: when it is necessary to adjust the rotating speed of the cutting blade 202, the motor 211 can be moved by rotating the knob 209, thereby changing the rotating speed of the cutting blade 202 through the switching of the pinion gear 203 and the gear wheel 204, thereby improving the cutting efficiency of the electric circular saw body 1. By disassembling the top cover 302, the maintenance of the gears inside can be realized, so as to prevent the tooth surface of the gears from being gradually worn out for a long time, thereby affecting the meshing accuracy and transmission efficiency of the gears.

[0030] The above merely is the preferred embodiment of the present application, and does not limit the present application in other forms, any skilled person in the art can change or modify the above disclosed technical content to equivalent embodiments applied to other fields with equivalent changes, but any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application without departing from the technical scheme of the present application still belongs to the protection scope of the technical scheme of the present application.

Claims

1. A brushless electric circular saw having high cutting efficiency, comprising an electric circular saw main body (1), characterized in that: The inside of the electric circular saw body (1) is provided with a cutting rotating speed adjusting assembly (2); The cutting rotating speed adjusting assembly (2) comprises a cutting gear (201), the front end of the cutting gear (201) is connected with a cutting blade (202), the two sides of the cutting gear (201) are respectively connected with a pinion (203) and a gear (204), the outer surface of the electric circular saw body (1) close to the pinion (203) and the gear (204) is connected with two groups of connecting frames (206), the inside of the connecting frame (206) is provided with a threaded hole (207), the inside of the threaded hole (207) is provided with a threaded rod (208), the two ends of the threaded rod (208) are respectively connected with a handle (209) and a bearing (210), one side of the bearing (210) is connected with a motor (211).

2. The brushless electric circular saw with high cutting efficiency according to claim 1, characterized in that: The output end of the motor (211) is connected with a fixed plug block matched with the fixed slot (205), the cutting gear (201) is meshed with the pinion (203) and the gear (204).

3. The brushless electric circular saw with high cutting efficiency according to claim 2, characterized in that: The threaded rod (208) and the handle (209) are threadedly connected, and the threaded rod (208) and the bearing (210) are rotatably connected.

4. The brushless electric circular saw with high cutting efficiency according to claim 1, characterized in that: The top of the electric circular saw body (1) is provided with a dismounting assembly (3), the dismounting assembly (3) comprises four groups of side ears (301), and the top of each group of side ears (301) is connected with a top cover (302).

5. The brushless electric circular saw with high cutting efficiency according to claim 4, characterized in that: The four corners of the top cover (302) are provided with slot holes (303), and each group of slot holes (303) is inserted with a bolt (304). 6.The brushless electric circular saw with high cutting efficiency according to claim 5, characterized in that: The bolt (304) is threadedly connected with the side ear (301) after penetrating through the slot hole (303). 7.The brushless electric circular saw with high cutting efficiency according to claim 5, characterized in that: The position and size of the bolt (304) are matched with the position and size of the side ear (301). 8.The brushless electric circular saw with high cutting efficiency according to claim 6, characterized in that: The shape of each group of side ears (301) is rectangular, and the top surface of each group of side ears (301) is matched with the top cover (302).

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