CN110653766A - Hand-held electric tool - Google Patents
Hand-held electric tool Download PDFInfo
- Publication number
- CN110653766A CN110653766A CN201810701111.3A CN201810701111A CN110653766A CN 110653766 A CN110653766 A CN 110653766A CN 201810701111 A CN201810701111 A CN 201810701111A CN 110653766 A CN110653766 A CN 110653766A
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- China
- Prior art keywords
- air inlet
- motor
- hand
- air
- battery pack
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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
- B25F5/008—Cooling means
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Portable Power Tools In General (AREA)
Abstract
The invention discloses a hand-held electric tool, comprising: the fan comprises a shell, a motor, a fan and a battery pack, wherein the shell is provided with a first air inlet and a first air outlet; the motor is arranged inside the shell; the motor drives the fan, and the fan enables cooling air outside the shell to flow to the first air outlet after passing through the first air inlet; the battery pack includes: the terminal accommodating part is used for accommodating a terminal, the terminal is used for realizing the electric connection between the handheld electric tool and the battery pack, a ventilation gap is arranged on the terminal accommodating part and communicated with the first air inlet, and when the battery pack is matched and connected with the shell, the first air inlet is positioned obliquely above one side, close to the motor, of the ventilation gap. From this, through casing, motor, fan and battery package cooperation, can improve handheld electric tool's rate of heat dissipation, can promote the radiating efficiency to the battery package to can guarantee the operational reliability of battery package, and then can guarantee handheld electric tool's operational reliability.
Description
Technical Field
The invention relates to the field of tools, in particular to a handheld electric tool.
Background
Under heavy current work load, the battery pack is easy to perform over-temperature protection under the condition that electricity is not discharged, and the over-temperature protection of the battery pack is mainly caused by slow heat dissipation and low efficiency, so that the temperature of the battery rises to the protection temperature quickly.
In the correlation technique, prior art is generally natural heat dissipation, perhaps through the bottom air inlet, and inside the casing was led again to the heat dissipation of battery package upper cover button department air outlet, the wind path passageway was longer, and battery radiating efficiency is poor, leads to handheld electric tool's operational reliability poor.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, an object of the present invention is to provide a handheld power tool, which can increase the heat dissipation rate of the handheld power tool, and can increase the heat dissipation efficiency of a battery pack.
The hand-held power tool according to the present invention includes: the fan comprises a shell, a motor, a fan and a battery pack, wherein the shell is provided with a first air inlet and a first air outlet; the motor is arranged inside the shell; the motor drives the fan, and the fan enables cooling air outside the shell to flow to the first air outlet after passing through the first air inlet; the battery pack is detachably coupled to the case, the battery pack including: the terminal accommodating part accommodates a terminal, the terminal is used for realizing the electric connection of the handheld electric tool and the battery pack, a ventilation gap is arranged on the terminal accommodating part, the ventilation gap is communicated with the first air inlet, and when the battery pack is connected to the shell, the first air inlet is positioned above the ventilation gap and is adjacent to one side of the motor.
According to the handheld electric tool, the shell, the motor, the fan and the battery pack are matched, so that the heat dissipation rate of the handheld electric tool can be improved, the heat dissipation efficiency of the battery pack can be improved, the working reliability of the battery pack can be ensured, and the working reliability of the handheld electric tool can be further ensured.
In some examples of the invention, the housing comprises: handheld portion and battery package mount pad, the battery package mount pad be located the below of handheld portion, first air intake set up in battery package mount pad department, battery package detachably connect in the battery package mount pad.
In some examples of the invention, the battery pack mount includes: the air inlet structure comprises a top wall and a first side wall, wherein the first side wall is connected to one side, adjacent to the motor, of the top wall, and the first air inlet is formed in the first side wall.
In some examples of the invention, the housing is further provided with a second air inlet; the hand-held power tool further includes: and the circuit board is positioned in the battery pack mounting seat, and cooling air sequentially flows through the second air inlet, the circuit board and the first air outlet to form a first heat dissipation channel.
In some examples of the invention, the second air inlet is arranged at a corner of the lower part of the handheld part far away from the motor.
In some examples of the invention, the battery pack further includes: and the second air outlet is positioned below the circuit board, and cooling air sequentially flows through the second air outlet, the circuit board and the first air outlet to form a second heat dissipation channel.
In some examples of the invention, a wind guide structure is arranged between the fan and the motor.
In some examples of the present invention, the motor has a third air inlet, and the third air inlet and the first air outlet are communicated with each other.
In some examples of the invention, the wind guiding structure is a wind guiding ring, and the motor comprises a motor shaft, and the wind guiding ring is arranged around the motor shaft.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a cross-sectional view of a hand-held power tool according to an embodiment of the present invention;
FIG. 2 is an enlarged view at A in FIG. 1;
FIG. 3 is a schematic view of a hand-held power tool according to an embodiment of the present invention;
FIG. 4 is a schematic view of another angle of a hand held power tool according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a battery pack of a hand-held power tool according to an embodiment of the present invention.
Reference numerals:
a hand-held power tool 10;
a housing 1; a first air inlet 11; a first air outlet 12; a hand-held portion 13;
a battery pack mounting seat 14; a top wall 141; a first sidewall 142;
a second air inlet 15;
a motor 2; a motor shaft 21; a third air inlet 22;
a battery pack 3; a terminal housing portion 31; the ventilation gap 32; a second air outlet 33; a terminal 34;
a circuit board 4; a first heat dissipation channel 5; a second heat dissipation channel 6; an air guide structure 7; a fan 8; and a fourth air inlet 9.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
A hand-held power tool 10 according to an embodiment of the present invention is described below with reference to fig. 1-5.
As shown in fig. 1 to 5, a hand-held power tool 10 according to an embodiment of the present invention includes: the electric vehicle comprises a shell 1, a motor 2, a fan 8 and a battery pack 3. The housing 2 may be provided with a first air inlet 11 and a first air outlet 12, and the motor 2 may be provided inside the housing 1.
In some embodiments of the present invention, as shown in fig. 4, the motor 2 may have a third air inlet 22, the third air inlet 22 is communicated with the first air inlet 11, and the third air inlet 22 is communicated with the first air outlet 12, so that the cooling air flowing out from the first air inlet 11 can flow into the interior of the motor 2 through the third air inlet 22, and after the heat exchange of the cooling air in the motor 2 is completed, the cooling air can flow out from the first air outlet 12 out of the hand-held power tool 10.
When the handheld electric tool 10 works, the motor 2 drives the fan 8 to work, the fan 8 can enable cooling air outside the housing 1 to flow to the third air inlet 22 after passing through the first air inlet 11, and then the cooling air can flow to the first air outlet 12 from the third air inlet 22.
The battery pack 3 is detachably coupled to the case 1, and the battery pack 3 may include: the terminal receiving portion 31 is used for receiving a terminal 34, the terminal 34 is used for electrically connecting the handheld power tool 10 with the battery pack 3, a ventilation gap 32 may be disposed on the terminal receiving portion 31, the ventilation gap 32 is located between the electrode tab and the terminal receiving portion 31, the ventilation gap 32 is communicated with the first air inlet 11, wherein when the battery pack 3 is assembled on the housing 1, the first air inlet 11 is located obliquely above a side of the ventilation gap 32 adjacent to the motor 2.
When the handheld power tool 10 starts to work, cooling air enters the battery pack 3 from the air inlet at the bottom of the battery pack 3, then flows from the ventilation gap 32 to the first air inlet 11, then flows from the first air inlet 11 to the third air inlet 22, then flows from the third air inlet 22 into the motor 2, and finally flows out of the housing 1 from the first air outlet 12.
Wherein, because the route is short between first air intake 11 and the third air intake 22, set up like this and can shorten the flow path of cooling air, can make cooling air carry out the heat exchange with handheld electric tool 10 better, and then can improve handheld electric tool 10's rate of heat dissipation, and, also can make cooling air carry out the heat exchange to battery package 3 better, can promote the radiating efficiency to battery package 3, prevent that battery package 3 from the high temperature at the during operation, thereby can guarantee battery package 3's operational reliability, and then can guarantee handheld electric tool 10's operational reliability, and simultaneously, also can promote handheld electric tool 10's safety in utilization.
From this, through casing 1, motor 2 and the cooperation of battery package 3, can improve handheld electric tool 10's rate of heat dissipation, can promote the radiating efficiency to battery package 3 to can guarantee battery package 3's operational reliability, and then can guarantee handheld electric tool 10's operational reliability.
In some embodiments of the present invention, as shown in fig. 1-5, the housing 1 may include: handheld portion 13 and battery package mount pad 14, battery package mount pad 14 is located the below of handheld portion 13, first air intake 11 sets up in battery package mount pad 14 department, battery package 3 detachably connects in battery package mount pad 14, so set up can make things convenient for the dismantlement of battery package 3, can be convenient for charging of battery package 3, and, when the user used handheld electric tool 10, the user can be with holding handheld portion 13, thereby can facilitate the use handheld electric tool 10.
In some embodiments of the present invention, as shown in fig. 1 and 2, the battery pack mount 14 may include: the top wall 141 and the first side wall 142, the first side wall 142 is connected to one side of the top wall 141 adjacent to the motor 2, it should be noted that, the first side wall 142 is connected to the right side of the top wall 141, and the first air inlet 11 can be arranged on the first side wall 142, so that the distance between the first air inlet 11 and the motor 2 can be shortened, the flow path of the cooling air can be further shortened, and the heat dissipation effect of the handheld electric tool 10 can be improved.
In some embodiments of the present invention, as shown in fig. 1-4, the housing 1 may further be provided with a second air inlet 15, and cooling air may flow into the hand-held power tool 10 from the second air inlet 15. The hand-held power tool 10 may further include: the circuit board 4, the circuit board 4 is located in the battery pack mounting seat 14, cooling air can flow through the second air inlet 15 in proper order, the circuit board 4, the first air outlet 11 forms the first heat dissipation channel 5, after cooling air flows into the casing 1 from the second air inlet 15, cooling air flows to the third air inlet 22 from the first heat dissipation channel 5, then cooling air flows into the motor 2 from the third air inlet 22, after cooling air exchanges heat with the motor 2 in the motor 2, cooling air can flow out of the motor 2 from the first air outlet 12, so that the heat of the circuit board 4 can be taken away by air, the temperature of the circuit board 4 can be reduced, and when cooling air flows through the motor 2, the heat of the motor 2 can also be taken away, the temperature of the motor 2 can be reduced, and therefore the normal operation of the handheld electric tool 10 can be ensured.
In some embodiments of the present invention, the second air inlet 15 may be disposed at a corner of the lower portion of the handheld portion 13, which is far away from the motor 2, it should be noted that the circuit board 4 may be disposed between the second air inlet 15 and the motor 2, the second air inlet 15 may be disposed at a left side of the circuit board 4, and the motor 2 may be disposed at a right side of the circuit board 4, and after cooling air flows into the housing 1 from the second air inlet 15, the arrangement position of the second air inlet 15 may be more reasonable, so as to better cool the circuit board 4.
In some embodiments of the present invention, as shown in fig. 1 to 3, the battery pack 3 may further include: the second air outlet 33, the second air outlet 33 is located below the circuit board 4, and the cooling air sequentially flows through the second air outlet 33, the fourth air inlet 9, the circuit board 4, and the first air outlet 12 to form a second heat dissipation channel 6. Wherein, after the cooling air in the battery package 3 flowed out from second air outlet 3, cooling air can flow to the outside of casing 1 from second heat dissipation channel 6, and cooling air is at the flow in-process, and cooling air can dispel the heat to circuit board 4 and motor 2 to can promote handheld electric tool 10's radiating efficiency.
In some embodiments of the present invention, as shown in fig. 1, a wind guiding structure 7 may be disposed between the fan 8 and the motor 2, the wind guiding structure 7 has a guiding function, and after the cooling air flows out from the motor 2, the cooling air may be guided to the first air outlet 12 by the wind guiding structure 7, so that the cooling air can more easily flow to the first air outlet 12, and the rate of the cooling air flowing out of the housing 1 can be increased.
In some embodiments of the present invention, the air guiding structure 7 may be an air guiding ring, the motor 2 may include a motor shaft 21, and the air guiding ring is disposed around the motor shaft 21, so that the air guiding ring can guide the cooling air flowing out from the motor 2 to the first air outlet 12 more quickly, and the heat exchange efficiency between the cooling air and the hand-held electric tool 10 can be improved, thereby improving the working performance of the air guiding structure 7.
Wherein the arrows in fig. 1 and 2 indicate the direction and path of the wind flow.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (9)
1. A hand-held power tool, comprising:
the air conditioner comprises a shell, a first air inlet and a first air outlet, wherein the shell is provided with the first air inlet and the first air outlet;
a motor disposed inside the housing;
the fan is driven by the motor, and the fan enables cooling air outside the shell to flow to the first air outlet after passing through the first air inlet;
a battery pack removably coupled to the housing, the battery pack comprising: the terminal accommodating part accommodates a terminal, the terminal is used for realizing the electric connection of the handheld electric tool and the battery pack, a ventilation gap is arranged on the terminal accommodating part, the ventilation gap is communicated with the first air inlet, and when the battery pack is connected to the shell, the first air inlet is positioned above the ventilation gap and is adjacent to one side of the motor.
2. The hand-held power tool of claim 1, wherein the housing comprises: handheld portion and battery package mount pad, the battery package mount pad be located the below of handheld portion, first air intake set up in battery package mount pad department, battery package detachably connect in the battery package mount pad.
3. The hand-held power tool of claim 2, wherein the battery pack mount comprises: the air inlet structure comprises a top wall and a first side wall, wherein the first side wall is connected to one side, adjacent to the motor, of the top wall, and the first air inlet is formed in the first side wall.
4. The hand-held power tool of claim 2, wherein the housing is further provided with a second air inlet;
the hand-held power tool further includes: and the circuit board is positioned in the battery pack mounting seat, and cooling air sequentially flows through the second air inlet, the circuit board and the first air outlet to form a first heat dissipation channel.
5. The hand-held power tool of claim 4, wherein the second air inlet is disposed at a corner of the lower portion of the hand-held portion away from the motor.
6. The hand-held power tool of claim 4, wherein the battery pack further comprises: and the second air outlet is positioned below the circuit board, and cooling air sequentially flows through the second air outlet, the circuit board and the first air outlet to form a second heat dissipation channel.
7. The hand-held power tool of claim 1, wherein a wind guide structure is disposed between the fan and the motor.
8. The hand-held power tool of claim 1, wherein the motor has a third air inlet in communication with both the first air inlet and the first air outlet.
9. The hand-held power tool of claim 7, wherein the wind-guiding structure is a wind-guiding ring, and the motor includes a motor shaft, and the wind-guiding ring is disposed around the motor shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810701111.3A CN110653766A (en) | 2018-06-29 | 2018-06-29 | Hand-held electric tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810701111.3A CN110653766A (en) | 2018-06-29 | 2018-06-29 | Hand-held electric tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110653766A true CN110653766A (en) | 2020-01-07 |
Family
ID=69027611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810701111.3A Pending CN110653766A (en) | 2018-06-29 | 2018-06-29 | Hand-held electric tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110653766A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111559015A (en) * | 2020-06-15 | 2020-08-21 | 格力博(江苏)股份有限公司 | Electric cutting tool |
| CN111958046A (en) * | 2020-09-15 | 2020-11-20 | 格力博(江苏)股份有限公司 | Electric tool, electric tool system and electric tool system |
| CN113000928A (en) * | 2021-03-12 | 2021-06-22 | 格力博(江苏)股份有限公司 | Cutting tool |
| CN113386077A (en) * | 2021-06-28 | 2021-09-14 | 江苏瑞力泰铁路科技有限公司 | Lithium battery torque-fixing wrench |
| CN114683156A (en) * | 2020-12-25 | 2022-07-01 | 南京泉峰科技有限公司 | Cutting tool |
-
2018
- 2018-06-29 CN CN201810701111.3A patent/CN110653766A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111559015A (en) * | 2020-06-15 | 2020-08-21 | 格力博(江苏)股份有限公司 | Electric cutting tool |
| CN111958046A (en) * | 2020-09-15 | 2020-11-20 | 格力博(江苏)股份有限公司 | Electric tool, electric tool system and electric tool system |
| CN114683156A (en) * | 2020-12-25 | 2022-07-01 | 南京泉峰科技有限公司 | Cutting tool |
| CN114683157A (en) * | 2020-12-25 | 2022-07-01 | 南京泉峰科技有限公司 | Cutting tool |
| CN113000928A (en) * | 2021-03-12 | 2021-06-22 | 格力博(江苏)股份有限公司 | Cutting tool |
| CN113386077A (en) * | 2021-06-28 | 2021-09-14 | 江苏瑞力泰铁路科技有限公司 | Lithium battery torque-fixing wrench |
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