CN210387780U - Electric circular saw convenient to activity cover kick-backs - Google Patents

Abstract

The utility model discloses an electric circular saw convenient to activity cover resilience, comprising a base plate, casing and output shaft assembly, the outside cover of casing is equipped with handle assembly, handle assembly includes casing and main handle, the last switch module that is connected with of handle assembly, switch assembly includes shift knob, cable conductor and supply socket, one side and the bottom plate of casing are connected, the inside of casing is provided with rotor subassembly and stator module, the cover is equipped with the saw bit on the output shaft of output shaft assembly, activity cover and fixed cover, the interior circle of the connecting portion of activity cover and output shaft is provided with the bearing, the excircle is provided with the activity cover torsional spring, be provided with the installation through-hole on the bottom plate, the installation through-hole is passed to one side of saw bit, fixed cover is located the top of saw bit, the activity cover is located the below of saw bit, and. The utility model discloses an electric circular saw adds in the interior circle of the connecting portion of movable cover and output shaft and establishes the bearing, can make the movable cover kick-back more nimble, and it is faster to kick-back to improve the operation security.

Description

Electric circular saw convenient to activity cover kick-backs

Technical Field

The utility model relates to an electric tool field, in particular to electric circular saw convenient to activity cover kick-backs.

Background

The safety protection cover of the existing electric circular saw consists of a fixed cover and a movable cover, the fixed cover is sleeved on a circular saw blade rotating shaft and is a semi-closed arc-shaped shell, the safety protection cover is designed according to the fact that the electric circular saw is in a handheld working state, the movable cover is used for blocking saw blades exposed outside, and when the electric circular saw is in the handheld working state, the fixed cover can effectively block saw bits no matter where the movable cover rotates. At present, the electric circular saw of area activity cover, when cutting article, because the contact of saw bit and cutting thing, the cutting thing has a thrust to the activity cover to make the activity cover gradually by the below top, fixed cover inboard rotates promptly, however, when stopping the cutting, the time that the original position was kick-backed to the activity cover is longer, that is to say, can not shelter from the saw bit fast, exists certain potential safety hazard to operating personnel.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide an electric circular saw convenient to activity cover kick-backs, the activity cover rebound time who exists among the solution prior art is long, can not shelter from the saw bit fast, has the problem of potential safety hazard.

In order to solve the technical problem, the utility model discloses a following technical scheme realizes:

an electric circular saw convenient for a movable cover to rebound comprises a bottom plate, a machine shell and an output shaft assembly, wherein a handle assembly is sleeved on the outer side of the machine shell, the handle assembly comprises a shell and a main handle, the handle assembly is connected with a switch assembly, the switch assembly comprises a switch button, a cable and a power socket, one side of the shell is connected with the bottom plate, a rotor assembly and a stator assembly are arranged in the shell, the output shaft of the output shaft assembly is sleeved with a saw blade, a movable cover and a fixed cover, the inner circle of the connecting part of the movable cover and the output shaft is provided with a bearing, the outer circle is provided with a movable cover torsion spring, the bottom plate is provided with an installation through hole, one side of the saw blade passes through the installation through hole, the fixed cover is positioned above the saw blade, the movable cover is positioned below the saw blade, and one side of the movable cover can movably rotate in the fixed cover.

Preferably, the rotor assembly includes a rotor, the rotor is connected with a blade and a wind blocking ring, and a wind guiding structure is arranged on the casing of the handle assembly at a position corresponding to the blade.

Preferably, the shaft lock assembly is further included, the shaft lock assembly comprises a shaft lock wrench and a shaft lock torsion spring, one end of the shaft lock wrench penetrates into the shell of the handle assembly and is movably connected with the rotor assembly, the other end of the shaft lock wrench is connected with the fixed limiting rubber column on the cover, and the shaft lock torsion spring is sleeved on the outer ring of the joint.

Preferably, the housing further comprises an auxiliary handle, and the auxiliary handle is located at a crossing position opposite to the main handle.

Preferably, the handle assembly is further provided with a receiving groove, and a saw blade disassembling wrench is placed at the receiving groove.

Preferably, the casing is further provided with a protective rear cover and a carbon brush.

Preferably, the bottom plate is further provided with an angle adjusting device.

The utility model has the advantages that: the utility model discloses an electric circular saw, simple structure adds in the interior circle of the connecting portion of movable cover and output shaft and establishes the bearing, makes to realize rolling friction between movable cover and the epaxial protecgulum of output, can make the movable cover kick-back more nimble, and it is faster to kick-back to improve operation security.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic view of the split structure of the middle casing of the utility model, wherein the stator assembly, the rotor assembly, the auxiliary handle and the protective rear cover are arranged on the middle casing;

FIG. 3 is a schematic view of the detachable structure of the middle output assembly of the present invention with a saw blade and a movable cover;

FIG. 4 is a schematic view of the split structure between the rotor assembly, the shaft lock assembly and the stationary cover of the present invention;

fig. 5 is a schematic structural diagram of the middle handle assembly and the switch assembly of the present invention.

In the figure: 1-a bottom plate; 2-a housing; 3-a shell; 4-a main handle; 5-switch button; 6-cable wires; 7-power socket; 8-a stator assembly; 9-an output shaft; 10-a saw blade; 11-a movable cover; 12-a stationary shield; 13-a bearing; 14-moving cover torsion spring; 15-a rotor; 16-a blade; 17-a wind-shield ring; 18-shaft lock wrench; 19-shaft lock torsion spring; 20-limiting rubber columns; 21-an auxiliary handle; 22-a receiving groove; 23-saw blade disassembly wrench; 24-a protective rear cover; 25-carbon brush; 31-wind guiding structure.

Detailed Description

The following describes the present invention with reference to the accompanying drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features related to the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

As shown in fig. 1-5, an electric circular saw convenient for resilience of a movable cover comprises a base plate 1, a casing 2 and an output shaft assembly, wherein a handle assembly is sleeved outside the casing 2 and comprises a shell 3 and a main handle 4, a switch assembly is connected on the handle assembly and comprises a switch button 5, a cable 6 and a power socket 7, one side of the shell 3 is connected with the base plate 1, a rotor assembly and a stator assembly 8 are arranged inside the casing 2, a saw blade 10 is sleeved on an output shaft 9 of the output shaft assembly, a movable cover 11 and a fixed cover 12 are sleeved on the output shaft 9, a bearing 13 is arranged on an inner circle of a connecting part of the movable cover 11 and the output shaft 9, a movable cover torsion spring 14 is arranged on an outer circle, an installation through hole is arranged on the base plate 1, one side of the saw blade 10 penetrates through the installation through hole, the fixed cover 12 is positioned above the saw blade 10, the movable cover 11, the casing 2 is also provided with a protective rear cover 24 and a carbon brush 25. According to the use requirement, a dust outlet can be arranged on the movable cover 11 or the fixed cover 12.

During operation, insert socket 7, through the operating switch subassembly, can drive saw bit 10 work, when saw bit 10 cuts, activity cover 11 passes through bearing 13 and the effect of activity cover torsional spring 14, will be from upwards to fixed cover 12 internal rotations from bottom to top, and when saw bit 10 stop work, activity cover 11 can kick-back fast, effectively protects saw bit 10, and the saw dust thing accessible that the during operation produced is discharged through the play dirt mouth on activity cover 11 or the fixed cover 12. The utility model discloses an electric circular saw, simple structure adds in the interior circle of the connecting portion of movable cover 11 and output shaft 9 and establishes bearing 13, makes to realize rolling friction between the protecgulum on movable cover 11 and the output shaft 9, can make movable cover 11 kick-backs more in a flexible way, and it is faster to kick-back to improve the operational safety nature.

The rotor assembly comprises a rotor 15, blades 16 and a wind blocking ring 17 are connected to the rotor 15, and a wind guiding structure 31 is arranged on the position, opposite to the blades 16, of the shell 3 of the handle assembly. Above-mentioned design through the ring 17 that keeps out the wind, can prevent that the saw bits thing that saw bit 10 during operation produced from polluting rotor subassembly and stator module, through wind-guiding structure, can improve blade 16's wind-force conveying, is favorable to the chip removal, has also played certain radiating effect simultaneously to improve the availability factor of product.

Still include the shaft lock subassembly, the shaft lock subassembly includes shaft lock spanner 18 and shaft lock torsional spring 19, and the one end of shaft lock spanner 18 penetrates handle components's casing 3, and with rotor subassembly swing joint, the other end of shaft lock spanner 18 is connected with spacing rubber post 20 on the fixed cover 12, and the outer lane cover at the junction establishes shaft lock torsional spring 19. Above-mentioned shaft lock subassembly has realized the locking process of rotation type, for the locking structure of traditional parallel type, feels comfortable after locking into, and elasticity is moderate, and the stroke is big.

The casing 2 is also provided with an auxiliary handle 21, and the auxiliary handle 21 is positioned at the opposite crossing position of the main handle 4. Due to the design, the auxiliary handle 21 and the main handle 4 are designed in a staggered mode, and the comfort degree of product operation is improved.

The handle assembly is also formed with a receiving slot 22, and a blade detaching wrench 23 is placed at the receiving slot 22. Above-mentioned design can be dismantled spanner 23 to the saw bit and effectively accomodate, prevents to lose after the use, improves the use validity of product.

The bottom plate 1 is also provided with an angle adjusting device. By means of the design, the use angle of the product can be flexibly adjusted according to use requirements, and the use effectiveness and flexibility of the product are improved.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in the embodiments without departing from the principles and spirit of the invention, and the scope of the invention is to be accorded the full scope of the claims.

Claims (7)

1. The utility model provides an electric circular saw convenient to activity cover kick-backs, includes the bottom plate, casing and output shaft subassembly, its characterized in that: the outside cover of casing is equipped with handle assembly, handle assembly includes casing and main handle, the last switch module that is connected with of handle assembly, switch assembly includes shift knob, cable conductor and supply socket, one side of casing with the bottom plate is connected, the inside of casing is provided with rotor subassembly and stator module, the cover is equipped with the saw bit on the output shaft of output shaft subassembly, activity cover and fixed cover, the activity cover with the interior circle of the connecting portion of output shaft is provided with the bearing, and the excircle is provided with the activity cover torsional spring, be provided with the installation through-hole on the bottom plate, one side of saw bit is passed the installation through-hole, fixed cover is located the top of saw bit, the activity cover is located the below of saw bit, just one side of activity cover can mobile rotate in the fixed cover.

2. The electric circular saw for facilitating rebound of a movable cover as set forth in claim 1, wherein: the rotor assembly comprises a rotor, blades and a wind blocking ring are connected to the rotor, and a wind guide structure is arranged on the shell of the handle assembly and opposite to the blades.

3. The electric circular saw for facilitating rebound of a movable cover as set forth in claim 1, wherein: still include the shaft lock subassembly, the shaft lock subassembly includes shaft lock spanner and shaft lock torsional spring, the one end of shaft lock spanner penetrates handle components's casing, and with rotor subassembly swing joint, the other end of shaft lock spanner with fixed spacing rubber post connection that covers, and establish at the outer lane cover of junction the shaft lock torsional spring.

4. The electric circular saw for facilitating rebound of a movable cover as set forth in claim 1, wherein: the shell is also provided with an auxiliary handle, and the auxiliary handle is positioned at the opposite crossing position of the main handle.

5. The electric circular saw for facilitating rebound of a movable cover as set forth in claim 1, wherein: still be formed with on the handle components and accomodate the groove, accomodate groove department and placed saw bit dismantlement spanner.

6. The electric circular saw for facilitating rebound of a movable cover as set forth in claim 1, wherein: and the shell is also provided with a protective rear cover and a carbon brush.

7. The electric circular saw for facilitating rebound of a movable cover as set forth in claim 1, wherein: and the bottom plate is also provided with an angle adjusting device.

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