CN106914866A - Hand held electric tool - Google Patents
Hand held electric tool Download PDFInfo
- Publication number
- CN106914866A CN106914866A CN201510993197.8A CN201510993197A CN106914866A CN 106914866 A CN106914866 A CN 106914866A CN 201510993197 A CN201510993197 A CN 201510993197A CN 106914866 A CN106914866 A CN 106914866A
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- China
- Prior art keywords
- hand
- operating
- power
- handle
- motor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
- Surgical Instruments (AREA)
Abstract
一种手持式电动工具包括：电机和操作装置；操作装置供用户操作；操作装置包括：把手壳体，形成供用户握持的操作把手；主控开关，用于控制电机是否通电；调速开关，用于控制电机的转速；主控操作件，用于供用户操作主控开关；调速操作件，用于供用户操作调速开关；操作把手设有一中分面，操作把手相对中分面对称设置；调速操作件设置在中分面的一侧。本发明公开的手持式电动工具其操作装置的设置符合人体工程学，操作舒适便捷。
A hand-held electric tool includes: a motor and an operating device; the operating device is for the user to operate; the operating device includes: a handle housing, forming an operating handle for the user to hold; a main control switch, used to control whether the motor is powered on; a speed regulating switch , used to control the speed of the motor; the main control operation part is used for the user to operate the main control switch; the speed control operation part is used for the user to operate the speed control switch; Symmetrical setting; the speed regulating operation part is set on one side of the split plane. The setting of the operating device of the handheld electric tool disclosed by the invention conforms to ergonomics, and the operation is comfortable and convenient.
Description
Technical Field
The present invention relates to a hand-held power tool.
Background
The hand-held power tool includes a working device and a power device. The power device provides power for the working device. When the power device uses electricity as an energy source, the handheld power tool can also be called a handheld electric tool. Common hand-held power tools are: pruners, mowers, pole saws, and the like.
The hand-held power tool comprises an operating device, wherein a trigger for controlling the starting of the machine and an operating piece for controlling the speed are arranged on the operating device, the traditional operating piece for controlling the speed is arranged right above a handle, the layout is unreasonable, and therefore, a user is difficult to control the speed while controlling the trigger.
Disclosure of Invention
To overcome the deficiencies of the prior art, it is an object of the present invention to provide an ergonomic hand-held power tool.
In order to achieve the above object, the present invention adopts the following technical solutions:
a hand-held power tool comprising: a working device for performing a function of the hand-held power tool; the power device is used for providing power for the working device; the connecting device is used for connecting the working device and the power device; the power device comprises: a motor for generating power; a power housing for housing the motor; the transmission mechanism is used for transmitting power generated by the motor; a circuit board for controlling the motor; the motor includes or is connected with: a fan which can be driven by the motor to rotate; the power shell is provided with: the air inlet can enable air flow to enter the power shell when the fan rotates; the air outlet can enable air flow to be discharged out of the power shell when the fan rotates; when the motor drives the fan to rotate, the air flow entering from the air inlet and discharged from the air outlet sequentially flows through the circuit board, the transmission mechanism and the motor.
Furthermore, the power shell is provided with a bisection plane, at least part of the power shell is symmetrical about the bisection plane, and the air inlet is formed in one side of the bisection plane.
Furthermore, the power shell is at least provided with an air outlet and an air inlet on two sides of the circuit board.
Furthermore, the power shell is at least provided with an air inlet and an air outlet on the same side of the circuit board.
Further, the air outlets are arranged on two sides of the middle split surface.
Furthermore, the position of the air inlet is arranged corresponding to the position of the circuit board.
Furthermore, the position of the air outlet is arranged corresponding to the position of the fan.
Further, the hand-held power tool further includes: an operating handle for a user to operate the hand-held electric tool; the operating handle is arranged between the power device and the working device.
Further, the connecting device includes: the connecting pipe is used for connecting the power device and the operating handle; an output shaft for outputting the power of the motor; the working device includes: the inserting pipe is used for being butted with the connecting pipe; the input shaft is used for being butted with the output shaft; the connecting pipe and the inserting pipe form detachable connection.
Further, the hand-held power tool further includes: the sleeve device is used for fixing the connection of the connecting pipe and the inserting pipe; the bushing device comprises: a sleeve having opposite ends; one end of the sleeve is used for butting the connecting pipe, and the other end of the sleeve is used for butting the inserting pipe.
Another hand-held power tool comprising: a working device for performing a function of the hand-held power tool; the power device is used for providing power for the working device; the connecting device is used for connecting the working device and the power device; the power device comprises: a motor for generating power; the connecting device includes: an output shaft for transmitting power of the motor; a connection pipe for receiving the output shaft; the working device includes: the input shaft is used for being butted with the output shaft; the inserting pipe is used for accommodating the input shaft; the connecting pipe and the inserting pipe form detachable connection; at least one of the connecting means or the working means comprises: a coupling member for transmitting torque between the output shaft and the input shaft; the coupling member is at least partially inserted into the connection pipe or the insertion pipe; a rotary supporting piece which can enable the coupling piece to rotate relative to the connecting pipe or the inserting pipe is arranged between the connecting pipe and the inserting pipe.
Further, the hand-held power tool further includes: the sleeve device is used for detachably connecting the connecting pipe and the inserting pipe; the bushing device comprises: a sleeve having opposite ends; one end of the sleeve is used for butting the connecting pipe, and the other end of the sleeve is used for butting the inserting pipe.
Further, the sleeve is fixedly connected with the connecting pipe; the sleeve pipe and the inserting pipe form movable connection.
Further, the cannula device further comprises: and the locking assembly is used for limiting the insertion pipe from exiting the sleeve.
Further, the sleeve inner wall is formed with: the sleeve convex rib protrudes out of the inner wall of the sleeve; the connecting pipe and the inserting pipe are respectively positioned at two sides of the convex rib of the sleeve.
Furthermore, the rotary supporting piece is arranged between the connecting pipe or the inserting pipe and the sleeve convex rib.
Further, the outside of the coupling is formed with: the limiting step is used for limiting the position of the rotating support piece; the rotary supporting piece is arranged between the limiting step and the sleeve convex rib.
Further, the coupling member is formed with: the transmission groove is used for inserting the output shaft; the insertion groove is used for inserting the input shaft; the transmission groove and the insertion groove are positioned at two opposite ends of the coupling member.
Further, the hand-held power tool further includes: an operating handle for a user to operate the hand-held power tool; the operating handle is arranged between the power device and the working device.
Further, the hand-held power tool further includes: an anti-abrasion block; the anti-abrasion block is arranged on the power device; when the hand-held power tool is placed vertically, the wear block can prevent the power device from contacting the ground.
Another hand-held power tool includes: a motor and an operating device; the operation device is used for the operation of a user; the operation device includes: a handle case forming an operation handle for a user to hold; the main control switch is used for controlling whether the motor is electrified or not; the speed regulating switch is used for controlling the rotating speed of the motor; the main control operation piece is used for a user to operate the main control switch; the speed regulating operation part is used for a user to operate the speed regulating switch; the operating handle is provided with a bisection plane, and the operating handle is symmetrically arranged relative to the bisection plane; the speed regulating operation member is arranged on one side of the middle split surface.
Further, the speed control operating member is slidably coupled to the handle housing.
Further, the handle case is formed with: the sliding support surface is used for supporting the speed regulation operation part to slide outside the handle shell; the sliding support surface is a plane and obliquely intersected with the bisection plane.
Further, the main control operation member is arranged below the operation handle, and the speed regulation operation member is positioned above the side of the operation handle.
Further, the operation device further includes: the safety operation piece is used for preventing a user from mistakenly touching the main control operation piece; the safety operating piece is arranged above the operating handle.
Further, the handle case is also formed with: an accommodating portion; used for accommodating the speed regulating switch; the accommodating part and the operating handle are arranged in front and back; the speed regulation operating part is arranged above the accommodating part side.
Further, the speed regulation operating part is arranged at the upper left of the accommodating part.
Further, the safety operation piece and the main control operation piece are positioned on two opposite sides of the operation handle.
Further, the hand-held power tool includes: a working device for performing a function of the hand-held power tool; the power device is used for providing power for the working device; the connecting device is used for connecting the working device and the power device; the power device comprises a power shell and a motor; the power housing houses a motor.
Further, the connecting device includes: the connecting pipe is used for connecting the power device and the operating handle; an output shaft for outputting the power of the motor; the working device includes: the inserting pipe is used for being butted with the connecting pipe; the input shaft is used for being butted with the output shaft; the connecting pipe and the inserting pipe form detachable connection.
The invention has the advantages that the arrangement of the operating device of the hand-held electric tool accords with human engineering, and the operation is comfortable and convenient.
Drawings
FIG. 1 shows a hand-held power tool as an example;
FIG. 2 is a schematic illustration of the power plant of FIG. 1;
FIG. 3 is a partial exploded view of the power plant of FIG. 1;
FIG. 4 is a schematic view of the air outlet of the power plant of FIG. 1;
FIG. 5 is a schematic illustration of the wear block installation of the power plant of FIG. 1;
FIG. 6 is a schematic view of the operating device of FIG. 1;
FIG. 7 is a schematic view of the operating device of FIG. 6 with a portion of the housing removed;
FIG. 8 is a schematic view of another perspective of the operating device of FIG. 6;
FIG. 9 is a schematic view of the working device and the sleeve device of FIG. 1 mounted thereon;
FIG. 10 is a schematic view of the cannula device of FIG. 1;
FIG. 11 is a partial exploded view of the coupling device, the sleeve device and the working device of FIG. 1;
FIG. 12 is a partial cross-sectional view of the attachment device, sleeve device and working device of FIG. 1;
FIG. 13 is a schematic view of the working device of FIG. 1 in a separated state from the sleeve device;
fig. 14 is a schematic view of the working device of fig. 1 in a coupled state with a cannula device.
Detailed Description
The invention is described in detail below with reference to the figures and the embodiments.
The hand-held power tool 100 shown in fig. 1 includes: a working device 10, a power device 20, an operating device 30, a connecting device 40 and a sleeve device 50.
The working device 10 is used to perform the functions of the hand-held power tool 100. The working device 10 comprises a working element 11. Specifically, as shown in fig. 1, the working element 11 is a chain and the hand-held power tool 100 is a pole saw. Of course, the working element 11 is not limited to a chain, but may be a grass rope for cutting or a pruning blade for performing a pruning function.
The power unit 20 provides power to the working device 10. As shown in fig. 2, the power unit 20 includes a motor 21, a transmission mechanism 22, a circuit board 23, and a power housing 24. The motor 21 generates power, and may be an internal combustion engine using fuel combustion as an energy source or an electric motor using electric power as an energy source. Specifically, the motor 21 shown in fig. 2 is an electric motor, and when power is generated by the electric motor, the hand-held power tool may also be referred to as a hand-held electric power tool. As shown in fig. 2, the hand-held power tool further includes a battery pack 211 for powering the motor. Specifically, the battery pack 211 is detachably connected to the power housing 24.
The transmission mechanism 22 is used to transmit power generated by the motor. The circuit board 23 is used to control the motor. As shown in fig. 2 and 3, the power housing 24 houses the motor. Further, the power housing 24 accommodates the transmission mechanism 22 and the circuit board 23, and the motor, the transmission mechanism 22 and the circuit board 23 are located inside the power housing 24. The transmission mechanism 22 includes a transmission gear that is located within a power housing 24. Specifically, the transmission mechanism 22 is a gear box. As shown in fig. 2 and 3, the motor includes or is coupled to a fan 212, and the fan 212 can be driven to rotate by the motor. More specifically, the motor is an outer rotor motor, and the fan 212 is a centrifugal fan provided at one end of the motor.
As shown in fig. 3, the power housing 24 includes at least a left housing 241 and a right housing 242. The left and right housings 241 and 242 enclose the motor. The power housing 24 is provided with an air inlet 243 and air outlets 244a and 244 b. When the fan 212 rotates, the airflow enters the power housing 24 from the air inlet 243, flows through the circuit board 23, the transmission mechanism 22 and the motor in sequence, and then exits the power housing 24 from the air outlets 244a and 244 b.
As shown in fig. 1-4, the power housing 24 has a bisecting plane 101, and the power housing 24 is at least partially symmetrical about the bisecting plane 101. Specifically, left shell 241 and right shell 242 are at least partially symmetrical about mid-plane 101. The air inlet 243 is disposed at one side of the middle facet 101. More specifically, the intake opening 243 is provided in the left housing 241, and the intake opening 243 is formed by the left housing 241.
The power housing 24 is formed with air inlets 243 and air outlets 244a, 244b at least on both sides of the circuit board 23. Specifically, the right housing 242 is formed with an air outlet 244 b. The air outlet 244b formed by the right housing 242 and the air inlet 243 formed by the left housing 241 are located at both sides of the circuit board 23.
The power housing 24 is formed with an air inlet 243 and an air outlet 244a at least on the same side of the circuit board 23. Specifically, the left housing 241 is formed with an air outlet 244 a. The air outlet 244a formed by the left housing 241 and the air inlet 243 formed by the left housing 241 are located on the same side of the circuit board 23.
As shown in fig. 1 to 4, the left and right cases 241, 242 are formed with air outlets 244a, 244 b. The air outlets 244a and 244b are disposed on two sides of the middle split surface 101.
The air outlets 244a and 244b are provided corresponding to the position of the fan 212. The rotation of the fan 212 can drive the airflow to be rapidly discharged from the air outlets 244a and 244b, and therefore, the cooling efficiency is high. The air inlet 243 is arranged corresponding to the position of the circuit board 23. Specifically, the circuit board 23 is provided with a heat sink 231, the heat sink 231 protrudes with heat dissipation ribs 232, and a heat dissipation channel is formed between two adjacent heat dissipation ribs 232. The air flow from the air inlet 243 enters the heat dissipation channel. Is convenient for fast heat dissipation. After passing through the heat dissipation channel, the airflow passes through the transmission mechanism 22, and cools the transmission mechanism 22. The airflow cooling the actuator 22 passes through the motor and is exhausted through the outlets 244a, 244 b. In the operation process, the circuit board 23 is the element with the largest heat generation, the air flow cools the circuit board 23 first, the temperature of the circuit board 23 can be effectively reduced, and then the air flow cools the transmission mechanism 22 and the motor in sequence. The cooling efficiency is high.
As shown in fig. 2 and 5, the hand-held power tool 100 also includes a wear block 25. The wear block 25 is disposed on the power plant 20. Specifically, the wear block 25 is disposed on the power housing 24. When placed in the manner shown with reference to fig. 5, i.e., when the hand-held power tool 100 is placed upright, the wear block 25 prevents the power unit 20 from contacting the ground. Further, the wear block 25 can prevent the battery pack 211 from contacting the ground. Specifically, the wear block 25 is made of a rubber material.
The operation device 30 is operated by a user to control the hand-held power tool 100. As shown in fig. 6 and 7, the operating device 30 includes a handle case 31, a main control switch 32, a speed control switch 33, a main control operation member 34, a speed control operation member 35, and a safety operation member 36.
As shown in fig. 6, the handle case 31 is formed with an operation handle 311 and an accommodating portion 312. The operation handle 311 is held by a user to operate the hand-held power tool. Of course, the handle housing may also be constructed as one piece with the power housing. Part of the power housing serves as a handle housing.
As shown in fig. 1, the operating device 30 is provided between the power device 20 and the working device 10, and specifically, as shown in fig. 1 and 6, the operating handle 311 is provided between the power device 20 and the working device 10. As shown in fig. 6 to 8, the operating handle 311 is provided with a median plane 102, and the operating handle 311 is symmetrical with respect to the median plane 102. The main control switch 32 is used for controlling whether the motor is electrified or not. The speed regulating switch 33 is used for controlling the rotation speed of the motor. The main control operation member 34 is used for a user to operate the main control switch 32; the speed control operating member 35 is used for a user to operate the speed control switch 33. The speed control operation member 35 is disposed on one side of the median plane 102. Specifically, the throttle operating member 35 is slidable relative to the handle housing 31, which is slidably connected to the handle housing 31. More specifically, the handle housing 31 is formed with a slide support surface (not shown). The slide support surface supports the governor operating member 35 for sliding movement outside the handle housing 31. The sliding support surface is planar and obliquely intersects the bisecting plane 102.
The main control operation member 34 is disposed below the operation knob 311. The speed regulating operation member 35 is located above and to the side of the operating handle 311. The safety operating member 36 prevents a user from accidentally touching the main control operating member 34 and prevents the motor from being activated in an undesired situation. The safety operation member 36 is located above the operation knob 311.
The accommodating portion 312 accommodates the speed control switch 33, and the accommodating portion 312 further accommodates the main control switch 32. The accommodating portion 312 and the operation knob 311 are disposed in front and rear. The speed regulating operation member 35 is disposed above and on the side of the accommodating portion 312. Specifically, the speed control operation member 35 is disposed at the upper left of the housing portion 312.
The safety operating member 36 and the main control operating member 34 are located on opposite sides of the operating handle 311. Referring to the orientation shown in FIG. 8, the safety operating member 36 is located above the operating handle 311, the main control operating member 34 is located below the operating handle 311, and the speed control operating member 35 is located laterally above the operating handle 311. When the user holds the operating handle 311, the user can easily unlock the safety operating member 36 with his or her palm and then activate the main control operating member 34 with his or her finger. At the same time, the user can touch the speed control operation member 35 with the index finger to control the speed. The positions of the operation parts accord with human engineering, and the operation is convenient.
As shown in fig. 9 and 10, the connecting device 40 connects the working device 10 and the power device 20. Specifically, the connecting device 40 includes an output shaft 41 and a connecting pipe 42. The working device 10 comprises an input shaft 12 and a bayonet tube 13. The output shaft 41 is used to transmit the power of the motor 21. The connection pipe 42 is for receiving the output shaft 41. The output shaft 41 is at least partially located in the connecting tube 42. The connection pipe 42 connects the power unit 20 and the operation handle 311.
The hand-held power tool 100 further comprises a sleeve arrangement 50. Referring to fig. 9 to 12, the sleeve device 50 makes the connection tube 42 and the insertion tube 13 detachably connected. The cannula device 50 comprises a cannula 51 and a locking assembly 52. The sleeve 51 has opposite ends; one end of the sleeve 51 is used for butting the connecting pipe 42, and the other end is used for butting the inserting pipe 13. Specifically, referring to fig. 13, the sleeve 51 is fixedly connected to the connection pipe 42; the sleeve 51 is movably connected to the socket pipe 13, and the state shown in fig. 13, i.e., the state when the sleeve 51 is separated from the socket pipe 13, and the state shown in fig. 14, i.e., the state when the sleeve 51 is connected to the socket pipe 13. As shown in fig. 11 and 12, the sleeve 51 has a sleeve rib 511 formed on the inner wall thereof. The sleeve rib 511 protrudes from the inner wall of the sleeve 51, and the connection pipe 42 and the insertion pipe 13 are respectively located at both sides of the sleeve rib 511.
As shown in fig. 11 and 12, the locking assembly 52 serves to limit the withdrawal of the insertion tube 13 from the sleeve 51. The input shaft 12 is butted against the output shaft 41. The power output from the motor 21 is transmitted to the work implement 10. The plug tube 13 serves to accommodate the input shaft 12. The input shaft 12 is at least partially located in the bayonet tube 13. The connecting tube 42 and the plug tube 13 form a detachable connection. Specifically, at least one of the connecting device 40 or the working device 10 includes a coupling member 43. The coupling member 43 connects the input shaft 12 and the output shaft 41, and transmits a torque between the output shaft 41 and the input shaft 12. The coupling member 43 is formed with a drive groove 431 and a cartridge groove 432. The transmission groove 431 is used for inserting the output shaft 41; the cartridge slot 432 is used for inserting the input shaft 12; drive slots 431 and cartridge slots 432 are located at opposite ends of the coupling member 43.
The coupling member 43 is at least partially inserted into the connection pipe 42 or the insertion pipe 13; a rotation support 434 for rotating the coupling member 43 relative to the connection tube 42 or the connection tube 13 is provided between the connection tube 42 and the connection tube 13. Specifically, the rotary support 434 is provided at the end of the connection pipe 42. The rotational support 434 is disposed between the connection tube 42 or the insertion tube 13 and the sleeve rib 511. The outer side of the coupling 43 is formed with a catching step 433. The limit step 433 is used to limit the position of the rotational support 434; the rotational support 434 is disposed between the limit step 433 and the sleeve rib 511. The rotating support 434 fixes the coupling member 43. So that the coupling member 43 has a small play, the user can insert the input shaft 12 into the insertion groove 432 accurately when mounting the working device 10. The rotation support 434 supports the coupling member 43 to support the input shaft 12 and the output shaft 41, and reduces vibration of the input shaft 12 and the output shaft 41 during rotation. Specifically, the rotating support 434 is a bearing, more specifically, it is a rolling bearing.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by using equivalent alternatives or equivalent variations fall within the scope of the present invention.
Claims (10)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510993197.8A CN106914866B (en) | 2015-12-24 | 2015-12-24 | Handheld Power Tools |
| US15/258,364 US10350743B2 (en) | 2015-09-08 | 2016-09-07 | Handheld electric tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510993197.8A CN106914866B (en) | 2015-12-24 | 2015-12-24 | Handheld Power Tools |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106914866A true CN106914866A (en) | 2017-07-04 |
| CN106914866B CN106914866B (en) | 2019-06-14 |
Family
ID=59459681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510993197.8A Active CN106914866B (en) | 2015-09-08 | 2015-12-24 | Handheld Power Tools |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106914866B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109746877A (en) * | 2019-03-27 | 2019-05-14 | 常州格力博有限公司 | Hand held electric tool |
| CN112296826A (en) * | 2019-07-23 | 2021-02-02 | 南京德朔实业有限公司 | Polishing machine |
| US12496697B2 (en) | 2021-12-28 | 2025-12-16 | Techtronic Cordless Gp | Work tool and transmission system thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109746877A (en) * | 2019-03-27 | 2019-05-14 | 常州格力博有限公司 | Hand held electric tool |
| CN109746877B (en) * | 2019-03-27 | 2024-08-16 | 格力博(江苏)股份有限公司 | Hand-held electric tool |
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| US12496697B2 (en) | 2021-12-28 | 2025-12-16 | Techtronic Cordless Gp | Work tool and transmission system thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106914866B (en) | 2019-06-14 |
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