CN108262719A

CN108262719A - Power tool and its drifting dust component

Info

Publication number: CN108262719A
Application number: CN201611258462.9A
Authority: CN
Inventors: 徐静涛; 张士松
Original assignee: Positec Power Tools Suzhou Co Ltd
Current assignee: Positec Power Tools Suzhou Co Ltd
Priority date: 2016-12-30
Filing date: 2016-12-30
Publication date: 2018-07-10

Abstract

The invention discloses a kind of power tools, and including casing, air inlet is provided on casing；Motor is contained in casing；Output shaft is at least partially housed in casing；On output shaft can installment work head, motor can drive output shaft drive work head movement；Power tool further includes drifting dust component and the gas channel of connection air inlet and air outlet equipped with air outlet, the position of air outlet can be adjusted, the power tool can be applicable in different operating modes, in the case of the variations such as work head type and installation direction, can realize the effect of drifting dust.

Description

Power tool and dust blowing component thereof

Technical Field

The invention relates to a power tool, in particular to a handheld power tool and a dust blowing component thereof.

Background

Dust is often generated during operation of the power tool, and the position of the dust generation changes with the type and position of the working head of the power tool. The prior art approaches to dust disposal do not address such variations. In addition, a multifunctional machine is a common swing power tool in the industry, and the working principle of the multifunctional machine is that an output shaft makes swing motion around an axis of the output shaft. Therefore, after the user installs different working heads on the free end of the output shaft, such as a straight saw blade, a circular saw blade, a triangular sanding disc and a shovel-type scraper, various different operation functions can be realized, such as sawing, cutting, grinding, scraping and the like, so as to adapt to different work requirements. Simultaneously, swing power tool can produce the dirt bits at the during operation, can make operational environment dirt bits fly upward, shelters from the operator sight, causes the influence to the operator health, can correspondingly set up dust extraction, however, because dust extraction still need be equipped with dust catcher and dirt bag etc. in addition usually, can increase consumption and noise to can make the operation of swing machine inconvenient. Therefore, when the swing power tool is used for sawing, cutting, etc. without much dust generation but with a demand for operator fineness, it is not suitable for using the dust suction apparatus.

Disclosure of Invention

Therefore, the power tool is required to be capable of effectively treating dust under different working conditions.

The present invention provides a power tool, including: the air conditioner comprises a shell, a fan and a fan, wherein an air inlet is formed in the shell; the motor is accommodated in the shell; an output shaft at least partially housed within the housing; the output shaft can be provided with a working head, and the motor can drive the output shaft to drive the working head to move; the power tool further comprises a dust blowing component with an air outlet and an air flow channel communicated with the air inlet and the air outlet, and the position of the air outlet can be adjusted.

The invention also provides a dust blowing component which can be detachably arranged on a power tool, the power tool comprises a machine shell, a motor and an output shaft, wherein the motor is accommodated in the machine shell, at least part of the output shaft is accommodated in the machine shell, the machine shell is provided with an air inlet, a working head can be arranged on the output shaft, the motor can drive the output shaft to drive the working head to move, the dust blowing component is provided with an air outlet, a first air flow channel is arranged in the machine shell, a second air flow channel is arranged in the dust blowing component, after the dust blowing component is arranged on the power tool, the first air flow channel and the second air flow channel are communicated to form an air flow channel for communicating the air inlet and the air outlet, and the position of the air outlet can be adjusted.

The invention has the beneficial effects that: the power tool can take the change of the position of dust generated due to the change of the type of the working head, the installation position of the working head and other factors into consideration, and can effectively blow dust under different conditions.

Preferably, the outlet is rotatable about the axis of the output shaft. By the arrangement, an operator can correspondingly adjust the position of the air outlet to blow dust after the direction of the working head is changed.

Preferably, the axis of the motor and the axis of the output shaft are located in the same reference plane, and the air outlet can rotate around an axis perpendicular to the reference plane. So set up for the air outlet of this blowing dirt part can the every single move rotation, thereby can adapt to the working head of equidimension not. For example, when the working head is large, the part of the working head generating dust is far away from the output shaft, and the air outlet can be adjusted to be tilted upwards so as to blow dust better.

Preferably, the airflow channel includes a first airflow channel disposed in the casing and a second airflow channel disposed in the dust blowing component, the air inlet is a first air inlet of the first airflow channel, the casing is further provided with a first air outlet, the air outlet is a second air outlet of the second airflow channel, the dust blowing component is further provided with a second air inlet, and the first airflow channel and the second airflow channel are in butt joint communication through the first air outlet and the second air inlet.

Preferably, the dust blowing component comprises a housing, the housing comprises a first portion and a second portion movably connected to the first portion, the second air inlet is disposed on the first portion, and the second air outlet is disposed on the second portion.

Preferably, the first part and the second part are rotatably connected.

Preferably, the first part and the second part are connected by a snap connection.

Preferably, the first portion and the second portion are connected by a magnetic element.

Preferably, the number of the first air outlet and the number of the second air inlet are two, the second air flow channel includes two branch channels, one of the two branch channels communicates with one of the two second air inlets and the second air outlet, and the other of the two branch channels communicates with the other of the two second air inlets and the second air outlet.

Preferably, the dust blowing member is disposed near the output shaft, and the branch passages are located at both sides of the casing and near the output shaft.

Preferably, the branch passage has a rectangular cross section. By such arrangement, the influence of the dust blowing component on the accessibility of the power tool can be reduced.

Preferably, the pair of first air outlets are respectively arranged at two sides of the casing.

Preferably, the dust blowing member is detachably mounted to a housing of the power tool. After the dust blowing component is installed on the power tool, under the condition that the operation precision of the power tool is not influenced, dust generated by the power tool in the operation process can not be accumulated to shield the sight of an operator, and the air flow which is directly discharged from the power tool originally is reasonably utilized, so that the power consumption and the noise can not be increased.

Preferably, the dust blowing component can be sleeved on the machine shell. The mode of establishing of cover that adopts makes the dust blowing part can laminate the casing as far as possible in the course of the work to minimum reduces its influence to instrument accessibility, also makes the installation of the relative power tool of dust blowing part more firm simultaneously.

Preferably, the dust blowing component further comprises a sealing structure arranged at the second air inlet. After the sealing structure is added, the air flow can be prevented from escaping from a gap between the shell of the power tool and the shell of the dust blowing component, so that the utilization rate of the air flow is improved, and the dust blowing efficiency is improved.

Preferably, the output shaft is capable of outputting a reciprocating oscillating motion about its axis.

Drawings

FIG. 1 is a perspective view of a first embodiment of a dust blowing member of the present invention mounted on a power tool;

FIG. 2 is a cross-sectional view of the dust blowing member shown in FIG. 1 when mounted on a power tool;

FIG. 3 is a perspective view of the dust blowing member shown in FIG. 1 shown not mounted on the power tool;

FIG. 4 is a cross-sectional view of the dust blowing component shown in FIG. 1;

FIG. 5 is a perspective view of the dust blowing member of FIG. 1 mounted on a power tool at another angle;

FIG. 6 is a cross-sectional view of a second embodiment of a dust blowing member of the present invention when mounted on a power tool;

FIG. 7 is a cross-sectional view of the dust blowing member shown in FIG. 6 in another state mounted on the power tool;

FIG. 8 is a perspective view of the dust blowing member of FIG. 6 shown not mounted on the power tool;

FIG. 9 is a cross-sectional view of the dust blowing member shown in FIG. 6;

wherein,

10. power tool 20, saw blade 30, dust blowing component

101. Housing 103, motor 105, and transmission mechanism

107. Output shaft 109, fan 110, first air intake

111. First air outlet 301, shell 303, first part

305. A second portion 307, a second inlet 309, a second outlet

311. Second airflow passage 313, annular portion 315, arm portion

317. Fastener 318, clamping part 319 and air outlet part

321. Sealing structure 323, magnetic element 306, inner wall

308. Outer side wall 310, outer side surface

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

Fig. 1 to 5 show a first embodiment of the present invention.

Referring to fig. 1 to 3, in the present embodiment, the power tool 10 includes a housing 101, a motor 103 and a transmission mechanism 105 accommodated in the housing 101, and an output shaft 107 at least partially accommodated in the housing 101, the output shaft 107 being capable of mounting the working head 20 thereon, the motor 103 driving the output shaft 107 to move through the transmission mechanism 105, and the movement of the output shaft 107 driving the working head 20 to move to machine a workpiece.

In the present embodiment, the power tool 10 is preferably a swing power tool, the transmission mechanism 105 converts the rotation motion of the motor 103 around the motor axis X into the reciprocating swing motion of the output shaft 107 around the output shaft axis Y, and the output shaft 107 drives the working head 20 to reciprocate around the output shaft axis Y, so as to implement operations of sawing, cutting, grinding, shoveling, scraping and the like on the workpiece. Preferably, the motor axis X is perpendicular to the output shaft axis Y. A plane formed by the motor axis X and the output shaft axis Y is defined as a reference plane in which the motor axis X and the output shaft axis Y are located. The portion of the housing 101 that houses the output shaft 107 extends in the direction of the output shaft axis Y in a substantially columnar shape, and the portion of the housing 101 that houses the motor 103 and the transmission mechanism 105 extends in the direction of the motor axis X in a substantially columnar shape.

A fan 109 is disposed in the housing 101, the fan 109 is driven by the motor 103 to rotate to generate an air flow to cool the motor 103, a first air inlet 110 and a first air outlet 111 are disposed on the housing 101, and a first air flow passage (not shown) is disposed to communicate the first air inlet and the first air outlet. The first wind inlet 110 is disposed at an end of the casing 101 away from the output shaft, and the first wind outlet 111 is disposed at an end of the casing 101 close to the output shaft. The first wind inlet 110 and the first wind outlet 111 are provided in the form of openings on the housing 101, and such openings may be single or multiple, that is, one wind inlet or wind outlet may be formed by one or more openings provided on the housing 101. The airflow may enter the power tool 10 through the first air inlet 110 and exit the power tool 10 through the first air outlet 111.

With continued reference to fig. 2 and 4, the power tool 10 also includes a dust blowing component 30. Preferably, the dust blowing component 30 is removably attachable to the housing 101 of the power tool 10. The dust blowing member 30 includes a housing 301. The housing 301 encloses and forms a second air flow passage 311. The housing 301 is provided with a second air inlet 307 and a second air outlet 309. The second air intake 307 and the second air outlet 309 are provided in the form of openings in the housing 301. The second air flow channel 311 communicates the second air inlet 307 and the second air outlet 309. The second intake vent 307 may communicate with the first exhaust vent 111. When the second inlet 307 is communicated with the first outlet 111, the first airflow channel is communicated with the second airflow channel, forming an airflow channel connecting the first inlet 307 and the second outlet 309. The second outlet 309 is disposed toward the working head 20, and the flow direction of the airflow blown out from the second outlet 309 is toward the working head 20. More preferably, the direction of the air flow is toward the location where the work head 20 contacts the work piece. After the dust blowing component is arranged on the machine shell 101 of the power tool 10, under the condition of not influencing the working precision of the power tool, dust generated by the power tool in the working process can not be accumulated to block the sight of an operator, and the air flow which is directly exhausted from the power tool 10 originally is reasonably utilized, so that the power consumption and the noise can not be increased.

The housing 301 includes a ring portion 313 that can fit over the casing 101. The dust blowing member 30 can be fitted over the housing 301 of the power tool 10 through the annular portion 313. The axis of the annular portion 313 coincides with the axis of the output shaft Y. The adopted sleeving mode enables the dust blowing component 30 to be attached to the machine shell 301 as much as possible in the working process, so that the influence of the dust blowing component on the accessibility of the power tool 10 is reduced to the minimum degree, and meanwhile, the installation of the dust blowing component 30 relative to the power tool 10 is more stable. The housing 301 further includes an extension arm 315 extending from the ring portion 313 along a side of the housing 101. The arm portion 315 is configured to conform to the outer surface of the housing. The ring portion 313 and the arm portion 315 are hollow structures communicating with each other. The arm portion 315 is a flat hollow structure and includes an outer side wall 308 and an inner side wall 306, when the dust blowing component 30 is mounted on the housing 101 of the power tool 10, the inner side wall 306 is attached to the outer surface of the housing 101, and the outer side wall 308 is disposed opposite to the housing 101. The second intake vent 307 is disposed on an inner sidewall 306 of the arm portion 315. Further, the second air inlet 307 has a substantially rectangular opening, when the dust blowing component 30 is mounted on the housing 101 of the power tool 10, the arm portion 315 is clamped on the housing 101 of the power tool 10 and covers the first air outlet 111 of the housing 101, the second air inlet 307 is in butt joint with the first air outlet 111, and the opening of the second air inlet 307 can completely cover the opening of the first air outlet 111, so that the first air flow passage in the housing 101 and the second air flow passage 311 of the dust blowing component 30 are communicated.

In this embodiment, the housing 101 of the power tool 10 is provided with two first air outlets 111 (one of which is not shown), and the first air flow passage communicates the two first air outlets 111 and the first air inlet 110. Preferably, the first outlet 111 is disposed on both sides of a reference plane on the cabinet 101. In this embodiment, the housing 301 includes two arm portions 315 extending from the annular portion 313 of the housing and extending along the side of the casing 101, and the two arm portions 315 are each provided with a second air inlet 307 (one of which is not shown). That is, the dust blowing part 30 includes two second air inlets 307. The two second air inlets 307 are respectively disposed on the inner side walls 306 of the two arm portions 315. When the dust blowing component 30 is mounted on the power tool 10, the two arm portions 315 are respectively clamped on two sides of the housing 101 of the power tool 10 and cover the first air outlets 111 on two sides of the housing 101, and the second air inlets 307 on the two arm portions 315 are respectively butted with the first air outlets 111 on two sides of the housing 101, so as to realize the communication between the first air flow channel and the second air flow channel. Preferably, the arm portion 315 extends from the ring portion 313 at a position near the foremost end of the dust blowing member 30 after being mounted to the cabinet 101. So set up, can make the dirt part that blows after the installation more firm, be difficult for droing. The second air flow passage 311 includes two branch passages, one of the two branch passages communicates with one of the two second air inlets 307 and the second air outlet 309, and the other of the two branch passages communicates with the other of the two second air inlets 307 and the second air outlet 309. Preferably, the cross-section of the direct current channel is rectangular. Preferably, the dust blowing member 30 is disposed near the output shaft 107, and the branch passages are disposed at both sides of the cabinet 101 and near the output shaft 107.

Referring to fig. 3-5, in the present embodiment, the housing 301 includes a first portion 303 and a second portion 305 that are movably connected. A second intake vent 307 is provided in the first portion 303 and a second exhaust vent 309 is provided in the second portion 305. Preferably, the mating portions of the first portion 303 and the second portion 305 have a generally annular configuration such that the second portion 305 is rotatable relative to the first portion 303 about the axis of the annular portion of the housing 301, that is, when the dust blowing member 30 is mounted to the power tool 10, the axis of the annular portion and the output shaft axis Y are coincident so that the second portion 305 is rotatable about the output shaft axis Y. That is, the first portion 301 includes a lower half of the aforementioned ring portion 313, and the second portion includes an upper half of the aforementioned ring portion 313 and the arm portion 315. In this embodiment, the first portion 303 and the second portion 305 are connected by a snap 317. In this embodiment, the buckle 317 is disposed on the first portion 303, and correspondingly, the second portion 305 is provided with a clamping portion 318 for clamping the buckle 317. It is noted that it is also possible to provide the catch on the second part 305 and the catch 318 on the first part 303. Further, the snap and catch 318 is circumferentially disposed along the outer edges of the first and second portions, and therefore does not restrict relative rotation between the first and second portions about the annular axis. Referring to fig. 5, when the working head 20 is mounted on the power tool 10 at other angles, the user can rotate the second section 305 of the housing, so that the second air outlet 309 on the second section 305 always faces the working head 20, that is, the user can adjust the position of the second air outlet 309 according to the position of the working head 20.

Fig. 6 to 9 show a second embodiment of the present invention.

Referring to fig. 6 to 8, the second embodiment is substantially similar to the first embodiment, except that the second outlet 309 is rotatable about an axis of rotation Z perpendicular to the reference plane. In the present embodiment, the housing 301 of the dust blowing member 30 includes an air outlet portion 319. The air outlet portion 319 extends from the outer side surface 310 of the second portion 305. The air outlet portion 319 defines the orientation of the second air outlet 309. The extending direction of the air outlet portion 319 is the direction of the second air outlet 309. The air outlet portion 319 is movably connected with respect to the other portion of the housing 301. Preferably, the air outlet portion 319 is pivotally connected to the rest of the housing 301, and the connection portion is a cylindrical hinge structure. More preferably, its pivot axis Z is perpendicular to the reference plane constituted by the motor line X and the output axis Y. After the dust blowing component 30 is mounted on the power tool 10, the position of the second air outlet 309 can be adjusted according to the type of the working head 20, so that the air flow from the air outlet is always blown to the foremost end of the working head 20. The arrangement enables the second air outlet 309 of the dust blowing component 30 to rotate in a pitching manner, so that the working heads 20 with different sizes can be adapted. For example, comparing fig. 6 and 7, it can be seen that when the working head 20 is larger, the end of the working head is farther from the output shaft, so that the position where the dust is generated is farther from the output shaft, and at this time, the air outlet can be adjusted to tilt up to blow dust better.

In addition, referring to fig. 8, the present embodiment is also different from the first embodiment in that the dust blowing member 30 further includes a sealing structure 321. The sealing structure 321 is provided at the second intake vent 307 of the housing 301. In the present embodiment, a sealing structure 321 that is provided around the second intake vent 307 and protrudes from the surface of the inner side wall 306 of the housing 301 is employed. Preferably, the sealing structure 321 is made of a flexible material. Preferably, the sealing structure 321 and the housing 301 are connected together by means of adhesion. The sealing structure 321 is added to prevent the air flow from escaping from the gap between the housing 101 of the power tool 10 and the housing 301 of the dust blowing component 30, so that the utilization rate of the air flow is improved, and the dust blowing efficiency is improved.

In addition, referring to fig. 9, the second portion 305 of the housing 301 may also be rotatable with respect to the first portion 303, similar to the first embodiment. The difference is that the first portion 303 and the second portion 305 are connected by a magnetic element 323. In this embodiment, the magnetic element 323 is disposed on the second portion 305. It should be noted that the magnetic element 323 may be disposed on the first portion 303, and the magnetic element 323 may be disposed on both the first portion 303 and the second portion 305, as long as the magnetic force generated by the magnetic element causes the first portion 303 and the second portion 305 to abut against each other.

In both embodiments, the dust blowing part 30 is detachably connected to the housing 101 of the power tool 10, but the dust blowing part 30 may be a part of the power tool 10 and directly fixedly connected to the housing 101 of the power tool 10.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that other embodiments of the present invention are possible for those skilled in the art, and that several modifications and substitutions can be made without departing from the spirit of the present invention.

Claims

1. A power tool, comprising:

the air conditioner comprises a shell, a fan and a fan, wherein an air inlet is formed in the shell;

the motor is accommodated in the shell;

an output shaft at least partially housed within the housing;

the output shaft can be provided with a working head, and the motor can drive the output shaft to drive the working head to move;

the method is characterized in that: the power tool further comprises a dust blowing component with an air outlet and an air flow channel communicated with the air inlet and the air outlet, and the position of the air outlet can be adjusted.

2. The power tool of claim 1, wherein: the air outlet can rotate around the axis of the output shaft.

3. The power tool of claim 1, wherein: the axis of the motor and the axis of the output shaft are located in the same reference plane, and the air outlet can rotate around the axis perpendicular to the reference plane.

4. The power tool of claim 1, wherein: the air flow channel comprises a first air flow channel arranged in the machine shell and a second air flow channel arranged in the dust blowing component, the air inlet is a first air inlet, the machine shell is further provided with a first air outlet, the first air flow channel is communicated with the first air inlet and the first air outlet, the air outlet is a second air outlet, the dust blowing component is further provided with a second air inlet, the second air flow channel is communicated with the second air inlet and the second air outlet, and the first air flow channel and the second air flow channel are communicated in a butt joint mode through the first air outlet and the second air inlet.

5. The power tool of claim 4, wherein: the dust blowing component comprises a shell, the shell comprises a first part and a second part movably connected to the first part, the second air inlet is formed in the first part, and the second air outlet is formed in the second part.

6. The power tool of claim 5, wherein: the first portion and the second portion are rotatably connected.

7. The power tool of claim 6, wherein: the first portion and the second portion are connected by a snap fit.

8. The power tool of claim 6, wherein: the first portion and the second portion are connected by a magnetic element.

9. The power tool of claim 4, wherein: the first air outlet and the second air inlet are two, the second air flow channel comprises two branch channels, one of the two branch channels is communicated with one of the two second air inlets and the second air outlet, and the other of the two branch channels is communicated with the other of the two second air inlets and the second air outlet.

10. The power tool of claim 9, wherein: the dust blowing component is arranged close to the output shaft, and the branch passages are located on two sides of the machine shell and close to the output shaft.

11. The power tool of claim 10, wherein: the cross section of the branch channel is rectangular.

12. The power tool of claim 9, wherein: the pair of first air outlets are respectively arranged on two sides of the shell.

13. The power tool of claim 1, wherein: the dust blowing member is detachably mounted to a housing of the power tool.

14. The power tool of claim 13, wherein: the dust blowing component can be sleeved on the machine shell.

15. The power tool of claim 4, wherein: the dust blowing component further comprises a sealing structure arranged at the second air inlet.

16. The power tool of any one of claims 1-15, wherein: the output shaft is capable of outputting a reciprocating oscillating motion about its axis.

17. A dust blowing component can be detachably mounted on a power tool, the power tool comprises a machine shell, a motor and an output shaft, wherein the motor is contained in the machine shell, at least part of the output shaft is contained in the machine shell, an air inlet is formed in the machine shell, a working head can be mounted on the output shaft, the motor can drive the output shaft to drive the working head to move, an air outlet is formed in the dust blowing component, a first air flow channel is formed in the machine shell, a second air flow channel is formed in the dust blowing component, when the dust blowing component is mounted to the rear of the power tool, the first air flow channel and the second air flow channel are communicated to form a communicated air inlet and an air outlet air flow channel, and the position of the air outlet can be adjusted.