CN201470996U - an electric circular saw - Google Patents

Abstract

The utility model relates to an electric circular saw which comprises: a base plate, a sawing mechanism connected with the base plate in rotation, the sawing mechanism comprises a motor casing equipped with a motor, the motor has an output shaft, and a sawing mechanism connected with the output shaft The saw blade has a rotating shaft, a fixed guard that covers the upper part of the saw blade, a movable guard that is rotatably connected to the fixed guard, and the movable guard covers the lower part of the saw blade. The electric circular saw also includes a first A baffle, the first baffle is slidably mounted on the base plate. By sliding the baffle structure installed on the bottom plate, it can effectively block impurities such as strips from the outside of the shield and prevent them from entering the shield, thereby improving the safety of the operation and facilitating the operation of the operator.

Description

an electric circular saw

technical field

The utility model relates to an electric circular saw, in particular to an electric circular saw with a baffle.

Background technique

There are various kinds of electric circular saws on the market. Generally, electric circular saws have a movable guard. When the appliance is not in use, the movable shield covers the saw blade. cut operation. Usually, a lot of impurities will be produced in the process of working with an electric circular saw, especially some strips will be produced when sawing some thin edges, and these strips will be stuck in the guard, resulting in the failure of the movable guard to rebound . Therefore, after the operation is completed, the operator needs to clean up the strips located in the guard so that the movable guard can rebound and cover the saw blade. Obviously, this will lead to unsafe operation and increase the difficulty of operation. Increased operator cutting time.

Contents of the invention

The technical problem to be solved by the utility model is to provide an electric circular saw that prevents impurities such as strips from entering the protective cover.

In order to solve the above problems, the electric circular saw disclosed by the utility model includes: a bottom plate, a sawing mechanism connected to the bottom plate in rotation, the sawing mechanism includes a motor casing equipped with a motor, and the motor has an output Shaft, a saw blade connected to the output shaft, said saw blade has a rotating shaft, a fixed guard covering the upper part of said saw blade, a movable guard rotatably connected to said fixed guard, said movable The shield covers the lower part of the saw blade, and it is characterized in that the electric circular saw also includes a first baffle, and the first baffle is slidably mounted on the bottom plate.

In order to solve the above problems, another electric circular saw disclosed by the utility model includes a bottom plate, a sawing mechanism connected to the bottom plate in rotation, the sawing mechanism includes a motor casing equipped with a motor, and the motor has an output Shaft, a saw blade connected to the output shaft, the saw blade has an axis of rotation, a fixed guard covering the upper part of the saw blade, a movable guard rotatably connected to the fixed guard, the movable guard Covering the lower part of the saw blade is characterized in that a baffle is installed on the fixed shield, and a gap is formed on the baffle, and at least a part of the saw blade extends into the gap.

Through the baffle structure slidingly installed on the bottom plate or the baffle structure installed on the fixed shield, impurities such as strips can be effectively blocked from the outside of the shield and prevented from entering the shield, thereby improving operation. The safety is conducive to the operation of the operator.

Description of drawings

Below in conjunction with accompanying drawing, the utility model is described in further detail.

Fig. 1 is a perspective view of the first embodiment of the utility model electric circular saw;

Fig. 2 is an exploded view of removing the sawing mechanism in Fig. 1;

Figure 3 is an enlarged view of the baffle in Figure 2;

Fig. 4 is a perspective view of the second embodiment of the utility model electric circular saw;

Fig. 5 is a perspective view of a third embodiment of the utility model electric circular saw;

Fig. 6 is an enlarged view at point A in Fig. 5 .

Detailed ways

As shown in Figures 1 and 2, the electric circular saw of the present utility model includes a base plate 1, a sawing mechanism 2, and the sawing mechanism 2 includes a motor housing 3 with a motor, a fixed guard 4, a pair of The fixed guard 4 rotates the connected arms 19 and 41, the motor has an output shaft (not shown in the figure), a saw blade 5 is connected to the output shaft, the saw blade 5 has a rotating shaft 6, and the fixed guard 4 covers the saw blade 5, a movable shield 7 is mounted on the fixed shield 4 by a spring rotation, and the movable rotating shield 7 covers the lower part of the saw blade under the action of the spring. A pair of support frames 17a and 17b are formed on the base plate 1, and a through hole (not shown) is respectively formed on the support frames 17a and 17b. The two through holes are opposite and their central axes overlap to form a rotation axis X, a The pair of rivets (not shown in the figure) pass through the above-mentioned through holes to rivet the support frames 17a, 17b and the arms 19, 41 together, so that the sawing mechanism 2 can rotate around the rotation axis X relative to the bottom plate 1 . An arc-shaped slot 18 and 42 are formed on the support frame 17a and the arm 19 respectively, and the locking assembly 20 is located on the arc-shaped slot 18 and 42 . The locking assembly 20 includes a locking member 20a, a washer 20b and a locking knob 20c. By operating the locking knob 20c and releasing the locking assembly 20, the sawing mechanism 2 can rotate relative to the bottom plate 1 around the rotation axis X, and at the same time, the locking member 20a moves and rotates in the arc groove 18, when it reaches a suitable position , operate the locking knob 20c to lock the locking assembly 20, so that the locking sawing mechanism 2 is locked at a position relative to the base plate 1 . Those skilled in the art are familiar with the above-mentioned mechanism, and this mechanism is not the key point of the invention of the present utility model, so it will not be described here.

As shown in Fig. 1, 2 and 3, base plate 1 has an upper surface 11 and a lower surface 12, and guide block 25 is installed on the upper surface 11, and the upper surface 11 of guide block 25 and base plate 1 forms a guide groove 13, guides The direction of extension of the groove 13 is preferably parallel to the direction of extension of the axis of rotation 6 of the saw blade. The first end 8a of a first baffle plate 8 is preferably slidably installed in the guide groove 13, and a notch 10 is formed on the other end 8b opposite to the first end on the first baffle plate 8, at least a part of the saw blade 5 extends to Within the gap 10. A protrusion 26 is formed at the first end 8 a of the first baffle 8 , and a through hole 27 is formed on the protrusion 26 , a rivet 16 passes through the through hole and is riveted with the connecting rod 14 . The other end of the connecting rod 14 is formed with a through hole 28 through which a rivet 15 is riveted with the arm 19 . Thus, the two ends of the connecting rod 14 are respectively connected with the first baffle 8 and the arm 19 . In addition, two elongated protrusions 29, 30 are also formed on the first baffle plate 8, and the elongated protrusions 29, 30 form a guide groove 31 with the first baffle plate 8, and the extending direction of the guide groove 31 is preferably perpendicular to In the extending direction of the guide groove 13 , a second baffle 9 is installed in the guide groove 31 , and the second baffle 9 can slide in the guide groove 31 along a direction perpendicular to the guide groove 13 . A spring 22 is installed in the sliding groove 31, and its two ends are respectively connected with the second baffle plate 9 and the first baffle plate 8, and under the action of the spring force, the second baffle plate 9 slides to a position close to the saw blade, as shown in the figure 2. Overcome the elastic force of spring 22 to promote the second baffle plate 9, and the second baffle plate 9 can slide to a position away from the saw blade again, there will be enough space for installing the saw blade at this position away from the saw blade, so that the saw blade is more Easy to install. The first baffle plate 8 and the second baffle plate 9 are preferably formed with a series of square through holes or through grooves 21 along the sawing direction of the saw blade near the end of the saw blade. same direction. In addition, the second baffle 9 can also be installed on the first baffle by other suitable installation methods such as rotation so as to approach and move away from the saw blade.

When the saw blade is sawing a workpiece, especially when sawing a thinner workpiece, due to the friction between the saw blade and the workpiece, the workpiece tends to break at the edge of the saw blade and the resulting workpiece strip will follow The saw blade moves upwards, and since the first baffle 8 and the second baffle 9 are located on both sides of the saw blade 5 and the blade portion of the saw blade is located in the notch 10, the first baffle 8 and the second 9 will stop the workpiece The strip moves upwards with the saw blade and enters the fixed guard 4, while the square through holes or slots 21 on the first baffle plate 8 and the second baffle plate 9 will allow small particles such as dust to enter the fixed guard 4 upwards. , and discharged through the dust suction device. In this way, larger materials such as workpiece strips cannot enter the fixed shield 4, so after sawing is completed, the movable shield 7 can easily rebound and cover the lower part of the saw blade 5. If the operator needs to perform oblique cutting, he loosens the locking knob 20c and turns the sawing mechanism 2 to a suitable oblique cutting position. Simultaneously, the first baffle plate 8 and the second baffle plate 9 are driven to slide along the guide groove 13 . The first baffle plate 8 and the second baffle plate 9 can slide correspondingly along the guide groove 13 to ensure that the saw blade 5 will not interfere with the first baffle plate 8 and the second baffle plate 9 when beveling. In addition, the first baffle plate 8 of the present utility model can also be fixedly installed on the base plate 1, and even the first baffle plate 8 can be a part of the base plate 1. At this time, the size of the gap 10 needs to be set to ensure that the gap 10 does not overlap with The saw blade interferes.

Fig. 4 discloses another installation method of the baffle. As shown in FIG. 4, the baffle 32 is installed in the fixed guard 4 and is preferably located above the cutting position of the saw blade. Screws 33 , 34 pass through the holes on one side of the fixed shield 4 and threadedly connect with the screw holes on one side of the baffle 32 , so that the baffle 32 is fixedly installed on the fixed shield 4 . A notch 39 is formed on the baffle plate 32 , and at least a part of the saw blade 5 extends into the notch 39 . A series of through holes or through grooves 40 extending along the sawing direction are also formed on the baffle plate 32. Similarly, when the saw blade is sawing the workpiece, the through holes or through grooves 40 will allow small particles such as dust to enter upwards and fix them. In the shield 4, and discharged through the dust suction device. The baffle plate 32 can prevent the workpiece strip from moving up with the saw blade and entering the fixed shield 4, so that after sawing is completed, the movable shield 7 can easily rebound and cover the lower part of the saw blade 5.

Figures 5 and 6 disclose a second embodiment. As shown in Figure 5, the baffles 41, 42 are slidably installed on the bottom plate 1 by means of screws and waist-shaped grooves, and the baffles 41, 42 can also be slidably installed on the bottom plate 1 by other methods known to those of ordinary skill in the art. , which will not be described in detail here. The baffles 41, 42 are located on both sides of the saw blade respectively, and the saw blade 5 extends into the space formed by the baffle 41 and the baffle 42, and the baffles 41, 42 can be adjusted by sliding the baffles 41, 42 along the direction perpendicular to the plane of the saw blade. 41,42 to the distance of saw blade, baffle plate 41,42 should be close to the side of saw blade 5 as far as possible, to guarantee the gap between baffle plate 41,42 and saw blade as little as possible, thereby reach best effect. Alternatively, one of the baffles 41, 42 can be fixed to the chassis 1 while only the other baffle is adjusted.

The above description and the accompanying drawings are only specific implementations of the utility model, and the protection scope of the utility model is mainly based on the claims. Based on the understanding of the above description and accompanying drawings, it is considered within the protection scope of the present invention that those skilled in the art simply replace some components in the same way or in the form of simple replacement. .

Claims (12)

1. electric circular saw, comprise a base plate, a saw cutting mechanism that is rotationally connected with base plate, described saw cutting mechanism comprises a motor case that motor is housed, described motor has an output shaft, a saw blade that links to each other with output shaft, described saw blade has a rotating shaft, a secure shroud that covers in described saw blade top, a movable shield that is pivotally attached on the described secure shroud, described movable shield covers in the bottom of described saw blade, it is characterized in that, described electric circular saw also comprises one first baffle plate, and described first baffle plate is slidingly mounted on the described base plate.

2. electric circular saw as claimed in claim 1 is characterized in that described electric circular saw also comprises a second baffle.

3. electric circular saw as claimed in claim 2 is characterized in that, described second baffle is installed on described first baffle plate.

4. electric circular saw as claimed in claim 3 is characterized in that, described second baffle can move between away from the second place of saw blade near the primary importance of saw blade and one at one.

5. electric circular saw as claimed in claim 2 is characterized in that, described second baffle directly form with described base plate on.

6. electric circular saw as claimed in claim 2 is characterized in that described second baffle is slidably mounted on the described base plate.

7. electric circular saw as claimed in claim 2 is characterized in that described second baffle is fixedly installed on the described base plate.

8. as the electric circular saw described among the claim 2-7 each, it is characterized in that described first baffle plate and described second baffle are positioned at the both sides of described saw blade.

9. electric circular saw as claimed in claim 8 is characterized in that, is formed with a series of through hole or groove on one in described at least first baffle plate and the described second baffle.

10. electric circular saw as claimed in claim 1 is characterized in that, is formed with a series of through hole or groove on described first baffle plate.

11. electric circular saw, comprise a base plate, a saw cutting mechanism that is rotationally connected with base plate, described saw cutting mechanism comprises a motor case that motor is housed, motor has an output shaft, a saw blade that links to each other with output shaft, saw blade has a rotating shaft, a secure shroud that covers in described saw blade top, a movable shield that is pivotally attached on the described secure shroud, described movable shield covers in the bottom of described saw blade, it is characterized in that, on the described secure shroud baffle plate is installed, described baffle plate is formed with a breach, and at least a portion of described saw blade stretches in this breach.

12. electric circular saw as claimed in claim 15 is characterized in that, is formed with a series of through hole or groove on the described baffle plate.

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