CN213319939U - Hand-held electric tool - Google Patents
Hand-held electric tool Download PDFInfo
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- CN213319939U CN213319939U CN202021077265.9U CN202021077265U CN213319939U CN 213319939 U CN213319939 U CN 213319939U CN 202021077265 U CN202021077265 U CN 202021077265U CN 213319939 U CN213319939 U CN 213319939U
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- gear
- hand
- cooling air
- casing
- air duct
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Abstract
The utility model discloses a hand-held type electric tool, hand-held type electric tool includes casing, impeller and gear, the quantity of gear is a plurality of, the gear is located the inside of casing is a plurality of gear intermeshing's region is the gear engagement district, the casing is equipped with air intake and air outlet respectively along length direction's both ends, the inside of casing still is equipped with the cooling duct, the both ends in cooling duct communicate respectively in the air intake with the air outlet, the gear engagement district is located on the path in cooling duct, the impeller set up in the casing for follow the air intake accesss to the air outlet. This hand-held type electric tool sets up the cooling air duct with outside intercommunication along its length direction in the casing, and the cooling air is driven by the impeller and flows through the gear meshing district through the cooling air duct, reduces the temperature in gear meshing district, reduces the temperature in the casing correspondingly, extension hand-held type electric tool's life.
Description
Technical Field
The utility model relates to a hand-held type electric tool.
Background
The handheld electric tool is small in size and convenient to carry. The power transmission of the hand-held electric tool mainly depends on gear engagement, and a large amount of heat can be generated in a gear engagement area after long-time use. At present, a gear meshing area is wrapped by a shell, the heat dissipation of the gear meshing area mainly depends on the heat conduction of the shell, and the heat dissipation effect is poor. And the shell department in gear engagement district is the operator and holds the position for the heat is difficult to be dispelled the heat through the casing, leads to the temperature rise in casing and the casing, reduces hand-held type electric tool's life, and the casing that generates heat simultaneously also influences user experience.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a hand-held type electric tool in order to overcome the poor defect of hand-held type electric tool radiating effect among the prior art.
The utility model discloses an above-mentioned technical problem is solved through following technical scheme:
the utility model provides a hand-held type electric tool, hand-held type electric tool includes casing, impeller and gear, the quantity of gear is a plurality of, the gear is located the inside of casing is a plurality of gear intermeshing's region is the gear meshing district, the casing is equipped with air intake and air outlet respectively along length direction's both ends, the inside of casing still is equipped with the cooling air duct, the both ends in cooling air duct communicate respectively in the air intake with the air outlet, the gear meshing district is located on the route in cooling air duct, the impeller set up in the casing for follow wind the air intake accesss to the air outlet.
In this scheme, this hand-held type electric tool is provided with the cooling duct with outside intercommunication along its length direction in the casing, and the forced air cooling is regional in the increase, and the cooling air is driven by the impeller and flows through the gear meshing district through the cooling duct, reduces the temperature in gear meshing district, reduces the temperature in the casing correspondingly, extension hand-held type electric tool's life.
Preferably, the handheld electric tool further comprises a motor, the motor comprises a stator and a rotor, a gap is arranged between the stator and the rotor, and the gap is located on the passage of the cooling air duct.
In this scheme, the clearance is located cooling duct and communicates with cooling duct, and the long-time work of motor can produce the heat, and the cooling air is convenient for to the motor cooling through the motor of clearance flow through, improves the life of motor.
Preferably, the gear is connected to the rotor, the impeller is located on the cooling air duct between the motor and the gear, and the impeller is connected to an armature shaft of the motor.
In this scheme, the one end of impeller air-out communicates in the air outlet, and the motor drives the impeller rotation when rotatory, and wind flow direction air outlet is followed to the air intake with higher speed, improves the cooling effect.
Preferably, the air inlet is arranged on the top surface of the shell;
and/or the air inlet is arranged on the side surface of the shell.
In this scheme, set up the air intake in the different regions of casing, the air-cooled region of increase has the dead angle in avoiding the casing, improves the ventilation effect in the casing.
Preferably, the air outlet is arranged on the top surface of the shell;
and/or the air outlet is arranged on the bottom surface of the shell.
In this scheme, set up the air outlet in the different regions of casing, increase air-cooled region, avoid having the dead angle in the casing, improve the ventilation cooling effect in the casing.
Preferably, the housing further includes a holding portion, and the holding portion is located outside the cooling air duct.
In this scheme, the cooling duct in the inboard carries out air separation with the portion of gripping and gear engagement district, avoids the portion of gripping temperature too high, improves the user experience that the user gripped the instrument.
Preferably, the cooling air duct is divided into a first cooling air duct and a second cooling air duct, and the first cooling air duct and the second cooling air duct are respectively located on two sides of the gear.
In this scheme, all set up cooling duct in the both sides of gear, increase air-cooled region, the flow of air current is with higher speed, improves the cooling effect.
Preferably, the handheld electric tool further comprises a handle, the handle is connected to the bottom surface of the housing, and the air inlet is formed in one end, close to the handle, of the housing.
In this scheme, the air intake setting is in the one end that is close to the handle, and the work head setting is kept away from to the handle, and the air is cleaner, keeps away from the dust that the construction produced, prevents that the dust from getting into in the electric tool.
Preferably, the hand-held electric tool further comprises a working head, one end of the working head is connected to the gear, and the air outlet is formed in one end, close to the working head, of the shell.
In this scheme, set up the air outlet in the one end of working head, blow the dust that the construction produced to the direction of keeping away from electric tool from air outlet exhaust wind, improve user experience.
Preferably, one end of the cooling air duct close to the working head extends obliquely upwards along the direction of the flow of the air.
In this scheme, cooling duct sets up along the flow direction slope of wind, and the cooling duct of being convenient for is arranged in the same direction as smooth airing exhaust, makes wind and the skew operating personnel of dust and working face arrange to the distant place simultaneously, avoids wind to meet bounce back behind the working face, causes the air of mixing the dust to be inhaled by operating personnel.
On the basis of the common knowledge in the field, the above preferred conditions can be combined at will to obtain the preferred embodiments of the present invention.
The utility model discloses an actively advance the effect and lie in: this hand-held type electric tool is provided with the cooling air duct with outside intercommunication along its length direction in the casing, and the forced air cooling is regional in the increase, and the cooling air is driven by the impeller and flows through the gear meshing district through the cooling air duct, reduces the temperature in gear meshing district, reduces the temperature in the casing correspondingly, extension hand-held type electric tool's life.
Drawings
Fig. 1 is a schematic view of an internal structure of a handheld electric tool according to a preferred embodiment of the present invention.
Fig. 2 is a schematic external structural view of a handheld electric tool according to a preferred embodiment of the present invention.
Fig. 3 is a schematic diagram of a partial internal structure of a handheld electric tool according to a preferred embodiment of the present invention.
Description of reference numerals:
housing 1
Gear 3
Gear mesh zone 31
First cooling air duct 51
Second cooling air duct 52
Working head 7
Detailed Description
The present invention will be more clearly and completely described below by way of examples and with reference to the accompanying drawings, but the present invention is not limited thereto.
As shown in fig. 1-3, this embodiment discloses a hand-held electric tool, which includes a housing 1, an impeller 2 and gears 3, the number of the gears 3 is plural, the gears 3 are disposed inside the housing 1, the area where the gears 3 are engaged with each other is a gear engagement area 31, both ends of the housing 1 along the length direction are respectively provided with an air inlet 11 and an air outlet 12, the housing 1 is further provided with a cooling air duct 5, both ends of the cooling air duct 5 are respectively communicated with the air inlet 11 and the air outlet 12, the gear engagement area 31 is located on the path of the cooling air duct 5, and the impeller 2 is disposed inside the housing 1 and is used for leading air from the air inlet 11 to the air outlet 12.
In this embodiment, the cooling air duct 5 communicating with the outside is arranged in the housing 1 along the length direction of the housing, so that the air cooling area is increased, the cooling air is driven by the impeller 2 to flow through the gear meshing area 31 through the cooling air duct 5, the temperature of the gear meshing area 31 is reduced, the housing 1 is at a lower temperature, and the service life of the hand-held electric tool is prolonged.
The hand-held electric tool further comprises a motor 4, the motor 4 comprises a stator 41 and a rotor 42, the gear 3 is connected to the rotor 42, a gap is formed between the stator 41 and the rotor 42, the gap is located on a path of the cooling air duct 5 and communicated with the cooling air duct 5, cooling air can flow through the motor 4 through the gap conveniently, the working temperature of the motor 4 is reduced, and the service life of the motor 4 is prolonged.
As shown in fig. 1, the impeller 2 is connected to the armature shaft of the motor 4 and disposed on the cooling air duct 5 between the motor 4 and the gear 3, one end of the air outlet of the impeller 2 is communicated with the air outlet 12, the motor 4 drives the impeller 2 to rotate when rotating, and the accelerated air flows from the air inlet 11 to the air outlet 12, so as to improve the cooling effect.
As shown in fig. 2, the hand-held electric tool further includes a handle 6 and a working head 7, the handle 6 is connected to the bottom surface of one end of the housing 1, and the working head 7 is disposed at the other end of the housing 1. The air inlet 11 is formed in one end, close to the handle 6, of the shell 1, air is clean, dust generated in construction is far away, and the dust is prevented from entering the electric tool. The top surface and the side surface of the shell 1 are both provided with the air inlets 11, so that the air cooling area is increased, dead angles in the shell 1 are avoided, and the ventilation effect in the shell 1 is improved.
One end of the working head 7 is connected to the gear 3, and the air outlet 12 is arranged at one end of the shell 1 close to the working head 7. The dust that produces from air outlet 12 exhaust blows the direction of keeping away from electric tool with the construction, improves user experience. The top surface and the bottom surface of the shell 1 are both provided with the air outlets 12, so that the air cooling area is increased, dead angles in the shell 1 are avoided, and the ventilation and cooling effects in the shell 1 are improved.
As shown in fig. 1, one end of the cooling air duct 5 close to the working head 7 is inclined and extends upwards along the direction of the air flow, so that the cooling air duct 5 can smoothly exhaust air, and meanwhile, air and dust are deflected away from an operator and the working surface and are discharged to a far distance, so that the situation that the air rebounds after encountering the working surface to cause the air of mixed dust to be sucked by the operator is avoided.
As shown in fig. 1, the outside of the housing 1 is further provided with a holding portion 13, the holding portion 13 is located outside the cooling air duct 5, the cooling air duct 5 inside isolates the holding portion 13 from the gear meshing zone 31 by air, so that the temperature rise of the holding portion 13 is avoided, and the user experience of holding by a user is improved.
As shown in fig. 3, a first cooling air duct 51 and a second cooling air duct 52 are respectively disposed on two sides of the gear 3, so as to accelerate the flow of air in the housing 1, increase the air-cooled area, avoid ventilation dead corners in the housing 1, and improve the cooling effect. The flow direction of the cooling wind is shown by the arrows in the figure.
Although specific embodiments of the present invention have been described above, it will be understood by those skilled in the art that this is by way of example only and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and the principles of the present invention, and these changes and modifications are all within the scope of the present invention.
Claims (10)
1. The utility model provides a hand-held type electric tool, its characterized in that, hand-held type electric tool includes casing, impeller and gear, the quantity of gear is a plurality of, the gear is located the inside of casing is a plurality of gear intermeshing's region is the gear meshing district, the casing is equipped with air intake and air outlet respectively along length direction's both ends, the inside of casing still is equipped with cooling air duct, cooling air duct's both ends communicate respectively in the air intake with the air outlet, gear intermeshing district is located on cooling air duct's the route, the impeller set up in the inside of casing is used for following the air intake accesss to the air outlet.
2. The hand held power tool of claim 1, further comprising a motor including a stator and a rotor with a gap therebetween, said gap being in the path of said cooling air duct.
3. The hand held power tool of claim 2, wherein the gear is connected to the rotor, the impeller is located on the cooling air path between the motor and the gear, and the impeller is connected to an armature shaft of the motor.
4. The hand-held power tool of claim 1, wherein the air inlet is disposed in a top surface of the housing;
and/or the air inlet is arranged on the side surface of the shell.
5. The hand-held power tool of claim 1, wherein the air outlet is disposed on a top surface of the housing;
and/or the air outlet is arranged on the bottom surface of the shell.
6. The hand held power tool of claim 1, wherein the housing further comprises a grip portion located outside the cooling air duct.
7. The hand-held power tool of claim 1, wherein the cooling air duct is divided into a first cooling air duct and a second cooling air duct, the first cooling air duct and the second cooling air duct being located on both sides of the gear, respectively.
8. The hand held power tool of claim 1, further comprising a handle attached to a bottom surface of said housing, said air inlet being disposed at an end of said housing proximate said handle.
9. The hand-held electric tool according to any one of claims 1 to 8, further comprising a working head, wherein one end of the working head is connected to the gear, and the air outlet is disposed at one end of the housing close to the working head.
10. The hand-held power tool of claim 9, wherein the end of the cooling air duct adjacent to the working head extends obliquely upward in the direction of the flow of the air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021077265.9U CN213319939U (en) | 2020-06-11 | 2020-06-11 | Hand-held electric tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021077265.9U CN213319939U (en) | 2020-06-11 | 2020-06-11 | Hand-held electric tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213319939U true CN213319939U (en) | 2021-06-01 |
Family
ID=76080523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021077265.9U Active CN213319939U (en) | 2020-06-11 | 2020-06-11 | Hand-held electric tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213319939U (en) |
-
2020
- 2020-06-11 CN CN202021077265.9U patent/CN213319939U/en active Active
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