CN208758720U - Cutting tool - Google Patents
Cutting tool Download PDFInfo
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- CN208758720U CN208758720U CN201821275373.XU CN201821275373U CN208758720U CN 208758720 U CN208758720 U CN 208758720U CN 201821275373 U CN201821275373 U CN 201821275373U CN 208758720 U CN208758720 U CN 208758720U
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- fan
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- cutting tool
- guide member
- flow
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Abstract
The utility model discloses a kind of cutting tools, comprising: saw blade；Motor, for driving saw blade to rotate by axis of first axle；Transmission device, for realizing the transmitting of power between motor and saw blade；Casing is formed with the accommodation space for accommodating transmission device；Fan is connected to the output end of motor；Motor-driven fan is rotated by axis of second axis；Fan includes fan air intake and fan outlet air end；Cutting tool further include: air guide member is set to the side where the fan outlet air end of fan；Air guide member includes for guiding the air dam at least partly flowing through transmission device from the air-flow that fan outlet air end flows out.The utility model is capable of providing a kind of cutting tool, and the transmission device of the cutting tool can sufficiently be radiated.
Description
Technical field
The utility model relates to field of power tools, and in particular to a kind of cutting tool.
Background technique
Common cutting tool is generally driven by motor, and the transmission between motor and saw blade is carried out by transmission device, by wind
Fan radiates to motor and transmission device.Partial distance fan is farther away and the more driving member of fever (such as worm gear snail
Bar, gear assembly etc.) there is a problem of that heat dissipation is inadequate, temperature rise is larger.
Utility model content
To solve the deficiencies in the prior art, the purpose of this utility model is to provide a kind of cutting tool, transmission devices
Sufficiently radiated.
In order to achieve the above objectives, the utility model adopts the following technical solutions:
A kind of cutting tool, comprising: saw blade；Motor, for driving saw blade to rotate by axis of first axle；Transmission device,
For realizing the transmitting of power between motor and saw blade；Casing is formed with the accommodation space for accommodating transmission device；Wind
Fan, is connected to the output end of motor；Motor-driven fan is rotated by axis of second axis；Fan includes fan air intake and fan
Outlet air end；Cutting tool further include: air guide member is set to the side where the fan outlet air end of fan；Air guide member includes being used for
Guidance at least partly flows through the air dam of transmission device from the air-flow that fan outlet air end flows out.
Further, air guide member includes for installing air guide member to the mounting portion of casing internal, and air dam is to be connected to
The wind guide vane of mounting portion.
Further, transmission device includes intermeshing worm gear and worm screw, and air guide member is for guiding air-flow to flow through worm gear
And worm screw.
Further, first axle is perpendicular to second axis.
Further, transmission device includes pitch wheel component, and air guide member is for guiding air-flow to flow through gear set
Part.
Further, air guide member includes: fan blade air intake, positioned at one end of the close fan of air guide member；Fan blade outlet air end,
Positioned at one end of the separate fan of air guide member；The ratio of the rated power of the mean flow rate and cutting tool of the air-flow of fan blade outlet air end
Value is more than or equal to 13 meters of/Miao ﹒ kilowatt and is less than or equal to 18 meters of/Miao ﹒ kilowatt.
Further, air guide member includes: fan blade air intake, positioned at one end of the close fan of air guide member；Fan blade outlet air end,
Positioned at one end of the separate fan of air guide member；The ratio of the rated power of the mean flow rate and cutting tool of the air-flow of fan blade outlet air end
Value is more than or equal to 15 meters of/Miao ﹒ kilowatt and is less than or equal to 17 meters of/Miao ﹒ kilowatt.
Further, fan is aerofoil fan.
Further, the temperature rise of the outer surface that can be accessible to user of casing is no more than 58K.
Further, fan includes: impeller, is connected to the output end of motor and rotates by axis of second axis；Flabellum, even
It is connected to impeller and is formed with the first intersection on the surface of impeller；Wind guide vane is connected to mounting portion and is formed on the surface of mounting portion
Second intersection；First intersection and the second intersection are substantially vertical.
The cutting tool for having the beneficial effect that the utility model of the utility model is used and is led in fan outlet air end increase
The radiator structure of wind part, and then realize and sufficiently radiated to the transmission device of cutting tool.
Detailed description of the invention
Fig. 1 is the perspective view of the cutting tool of the first embodiment of the utility model；
Fig. 2 is the perspective view of another angle of the cutting tool in Fig. 1；
Fig. 3 is the cross-sectional view of the part-structure of the cutting tool in Fig. 1；
Fig. 4 is the perspective view of the part-structure of cutting tool in Fig. 1；
Fig. 5 is the perspective view of the fan of the cutting tool in Fig. 1；
Fig. 6 is the perspective view of the air guide member of the cutting tool in Fig. 1；
Fig. 7 is that air-flow flows through the fan of cutting tool in Fig. 1 and the schematic diagram of air guide member.
Specific embodiment
Cutting tool of the invention can be a variety of cuttings such as electric circular saw, cutting tool, reciprocating saw, sweep-saw, cutting machine
Tool.Specific introduce is made to the utility model below in conjunction with the drawings and specific embodiments.
Fig. 1 is the cutting tool 100 of the first embodiment of the utility model.Below to the present embodiment by taking mitre saw as an example
Cutting tool 100 is introduced.
As shown in Figure 1 to Figure 3, cutting tool 100 includes bottom plate 11, casing 12, motor 13, saw blade 14 and transmission device
15.Wherein, casing 12 is mounted on bottom plate 11；Motor 13 and transmission device 15 are at least partially arranged in casing 12；Motor
The 13 driving rotations of saw blade 14 are to cut workpiece, and transmission device 15 is for connecting motor shaft 131 and saw blade 14, by motor
13 rotary motion is conducted to saw blade 14；Specifically, motor 13 further includes motor shaft 131, cutting tool 100 further includes saw blade
Axis, transmission device 15 conduct the rotary motion of motor shaft 131 to saw blade axis to drive for connecting motor shaft 131 and saw blade axis
Dynamic saw blade 14 operates.Transmission device 15 specifically may include deceleration mechanism, for example, intermeshing worm gear and worm screw or reduction gearbox or
Gear assembly.Worm and gear or reduction gearbox may include the gear structure equipped with different gear ratios, or the different synchronizing wheel radiuses of configuration
Toothed belt transmission structure.The preferred brush motor of motor 13 in the present embodiment.
Saw blade 14 is shown in Fig. 4 with first axle 101() it is that axis rotates.Cutting tool 100 further includes fan 16, and fan 16 is used for
It radiates for motor 13 and transmission device 15.Fan 16 is formed with fan air intake 161 and fan outlet air end 162, and air-flow is from wind
Fan air intake 161 flows to fan outlet air end 162, and fan air intake 161 and fan outlet air end 162 are located at fan 16 along axial direction
Two sides.In the present embodiment, fan 16 is aerofoil fan, and certainly, fan 16 is also possible to centrifugal fan, does not limit herein
It is fixed.Fan 16 is connected to the output end of motor 13, and in the present embodiment, fan 16 is connected to the output end of motor shaft 131, with electricity
Arbor 131 rotates coaxially, and specifically, motor shaft 131 and fan 16 are axis rotation with second axis 102；As a kind of optional
The embodiment selected, fan 16 can also be driven with motor shaft 131 by transmission device 15.In the present embodiment, first
Axis 101 is perpendicular to second axis 102, and in other words transmission device 15 changes rotation direction and makes saw blade axis perpendicular to motor
Axis 131.As a kind of selectable embodiment, saw blade axis is parallel to motor shaft 131；About saw blade axis and motor shaft 131
Relative position is not limited thereto.
Motor 13, fan 16 and most of transmission device 15 are contained in inside casing 12, and casing 12 is also formed with use
In the ventilation opening of ventilation, specifically, casing 12 is formed with the air inlet for allowing air-flow to flow into the input end position close to motor 13
Mouth 121 is being formed with air outlet 122 close to 162 position of fan outlet air end.Fan 16 be set to motor 13 and transmission device 15 it
Between, air-flow enters from air inlet 121, successively passes through motor 13, fan 16, and a part of air-flow flows out to casing from air outlet 122
It radiates outside 12 to 12 outer surface of casing, a part of air-flow radiates to transmission device 15 in 12 internal flow of casing.
As shown in figure 1, figure 3 and figure 4, transmission device 15 includes intermeshing worm gear 151 and worm screw 152, and worm screw 152 is logical
Shaft coupling 153 is crossed to be connected with motor shaft 131.Worm gear 151 and worm screw 152 generate heat more during engaged transmission, and temperature rise is larger,
But since worm screw 152 has certain axial length, air-flow is in diffusion process since the pressure loss causes air-flow to flow to worm gear
Deficiency in draught, wind speed are smaller when 151 152 engagement place of worm screw, in addition, the air-flow stirred through passing through fan 16 is from air outlet 122 to four
Face is spread from all directions, and the air-flow for finally flowing through worm gear 151 and worm screw 152 is sub-fraction.Therefore, we are in fan outlet air end
162 increase the air guide member 17 for guiding wind direction so that from fan outlet air end 162 flow out air-flow after air guide member 17 towards
Worm gear 151 is flowed out with casing 12 corresponding at 152 engagement place of worm screw and this, enhances the heat dissipation to temperature rise large area.Wind-guiding
Part 17 can be the fan structure with blade, be also possible to the wind scooper with ir-flow guide function or have change wind
To the windshield etc. of function, it is not limited thereto.In the present embodiment, air guide member 17 is the fixed structure similar to fan, is led
Wind part 17 is fixedly connected with the composition of casing 12, and in other words, air guide member 17 is always static with respect to casing 12.Air guide member 17 wraps
Wind guide vane 171 and mounting portion 172 are included, mounting portion 172 is fixedly connected with the composition of casing 12, and wind guide vane 171 is connected to mounting portion
172, it is integrally formed with mounting portion 172, certainly, wind guide vane 171 can also be formed independently and be connected to mounting portion 172.
As shown in figure 4, in the present embodiment, wind guide vane 171 is uniformly distributed circumferentially on 172 surface of part mounting portion, only
Carrying out guiding to fraction makes it flow through 12 surface of casing corresponding with 152 engagement place of worm screw of worm gear 151；As a kind of optional
The embodiment selected circumferentially is uniformly arranged wind guide vane 171 on entire 172 surface of mounting portion；As another selectable reality
Mode is applied, circumferentially in the non-homogeneous setting wind guide vane 171 in 172 surface of part mounting portion.For wind guide vane 171 specific number not
It limits.
Air guide member 17 includes fan blade air intake 173 and fan blade outlet air end 174, and air-flow flows to fan blade from fan blade air intake 173
Outlet air end 174, fan blade air intake 173 and fan blade outlet air end 174 are located at the two sides of air guide member 17, the outlet air of fan blade along axial direction
Hold the air outlet 122 close to casing 12.Air-flow after passing through fan 16 and air guide member 17 is flowed out from the outlet air end of fan blade, and fan blade goes out
The ratio of the mean flow rate of the air-flow at wind end 174 and the rated power of cutting tool 100 is more than or equal to 13 meters of/Miao ﹒ kilowatt and small
In equal to 18 meters of/Miao ﹒ kilowatt.Specifically, in the present embodiment, mean flow rate and cutting of the air-flow in fan blade outlet air end 174
The ratio of the rated power of tool 100 is about 15.6 meters of/Miao ﹒ kilowatt, specifically, the mean flow of the air-flow of fan blade outlet air end 174
Speed is about 28 meter per seconds, and the rated power of cutting tool 100 is about 1.8 kilowatts.
In fact, air-flow depends on the revolving speed and fan 16 and air guide member of motor 13 in the flow velocity of fan blade outlet air end 174
17 structure etc..Specifically, in the present embodiment, the revolving speed of motor 13 is 24000 revs/min.
As shown in figure 5, fan 16 includes impeller 163 and flabellum 164, flabellum 164 is uniformly distributed circumferentially in 163 table of impeller
Face, the chord length of flabellum 164 radially increase with the increase of radius, and the maximum chord length a of flabellum 164 is radius maximum chord length,
About 24 millimeters, minimum chord length b is chord length, about 15 millimeters at radius minimum, the inlet angle α and angle of outlet β phase of flabellum 164
Deng about 21o.It should be noted that each structural parameters of the above fan 16 are parameter employed in the present embodiment, and
It is not unique limit value, the mean flow rate of all air-flows that can be realized fan blade outlet air end 174 and the specified function of cutting tool 100
The ratio of rate is about that the structural parameters of 15.6 meters of/Miao ﹒ kilowatt are within the protection scope of the present utility model.The specific knot of fan 16
Structure is also not necessarily limited to this, and the above structure is only the preferred structure for being suitable for the fan 16 of cutting tool 100 of the present embodiment.
As shown in Figures 3 to 6, the structure of air guide member 17 and fan 16, the specific structure that casing 12 waits are related.In this implementation
In example, the chord length c of wind guide vane 171 is radially equal everywhere, does not change with the change of radius, specifically, the string of wind guide vane 171
Long c is about 25 millimeters, and thickness n is about 2 millimeters.The inlet angle γ of wind guide vane 171 is about 58o, and angle of outlet δ is about 90o, be that is to say
It says, the export direction of wind guide vane 171 is basically parallel to second axis 102, this helps to flow parallel current in second axis 102
To the front of air guide member 17, thus targetedly to worm gear 151 and worm screw 152 and worm gear 151 and 152 engagement place of worm screw
It radiates.It will of course be understood that, the specific structure of air guide member 17 is also not limited to this, as long as in fact, it enables to
The structure for the air guide member 17 that air-flow radiates to transmission device 15 along preset direction is in the protection scope of the utility model
Within.
Fig. 7 show the schematic diagram that air-flow flows through fan 16, air guide member 17.As shown in Fig. 1, Fig. 4, Fig. 7, flabellum 164 connects
It is connected to impeller 163 and is formed with the first intersection 103 on the surface of impeller 163；Wind guide vane 171 is connected to mounting portion 172 and is pacifying
The surface in dress portion 172 is formed with the second intersection 104；First intersection 103 and the second intersection 104 are substantially vertical.Based on the above flabellum
164 and wind guide vane 171 structure design, air-flow is after the outflow of the outlet air end of fan 16 along the wind guide vane 171 of air guide member 17
Extending direction flows to worm gear 151 and worm screw 152, to play guiding air-flow, change airflow direction, increasing flows through 151 He of worm gear
The effect of the air quantity and wind speed of worm screw 152, to preferably radiate to worm gear 151 and worm screw 152.For the present embodiment
In cutting tool 100, the temperature rise of the outer surface of casing 12 is no more than 58K, specifically, 152 engagement place pair of worm gear 151 and worm screw
The temperature rise for the casing 12 answered is required between 51K to UL62841 electric tool CSA between 58K, is met.
The basic principles and main features and advantage of the utility model have been shown and described above.The technical staff of the industry
It should be appreciated that above-described embodiment does not limit the utility model in any form, it is all by the way of equivalent substitution or equivalent transformation
Technical solution obtained, all falls in the protection scope of the utility model.
Claims (10)
1. a kind of cutting tool, comprising:
Saw blade；
Motor, for driving the saw blade to rotate by axis of first axle；
Transmission device, for realizing the transmitting of power between the motor and the saw blade；
Casing is formed with the accommodation space for accommodating the transmission device；
Fan is connected to the output end of the motor；
Fan described in the motor driven is rotated by axis of second axis；The fan includes fan air intake and fan outlet air
End；
It is characterized by:
The cutting tool further include:
Air guide member is set to the side where the fan outlet air end of the fan；
The air guide member includes at least partly flowing through the transmission device from the air-flow that the fan outlet air end flows out for guiding
Air dam.
2. cutting tool according to claim 1, it is characterised in that:
The air guide member includes for installing air guide member to the mounting portion of the casing internal, and the air dam is is connected to
State the wind guide vane of mounting portion.
3. cutting tool according to claim 1, it is characterised in that:
The transmission device includes intermeshing worm gear and worm screw, the air guide member for guide air-flow flow through the worm gear and
The worm screw.
4. cutting tool according to claim 3, it is characterised in that:
The first axle is perpendicular to the second axis.
5. cutting tool according to claim 1, it is characterised in that:
The transmission device includes pitch wheel component, and the air guide member is for guiding air-flow to flow through the gear set
Part.
6. cutting tool according to claim 2, it is characterised in that:
The air guide member includes:
Fan blade air intake, positioned at one end close to the fan of the air guide member；
Fan blade outlet air end, positioned at one end far from the fan of the air guide member；
Air-flow the ratio of the mean flow rate of the fan blade outlet air end and the rated power of the cutting tool be more than or equal to 13 meters/
Miao ﹒ kilowatt and be less than or equal to 18 meters of/Miao ﹒ kilowatt.
7. cutting tool according to claim 2, it is characterised in that:
The air guide member includes:
Fan blade air intake, positioned at one end close to the fan of the air guide member；
Fan blade outlet air end, positioned at one end far from the fan of the air guide member；
The ratio of the rated power of the mean flow rate and cutting tool of the air-flow of the fan blade outlet air end be more than or equal to 15 meters/
Miao ﹒ kilowatt and be less than or equal to 17 meters of/Miao ﹒ kilowatt.
8. cutting tool according to claim 1, it is characterised in that:
The fan is aerofoil fan.
9. cutting tool according to claim 1, it is characterised in that:
The temperature rise of the outer surface that can be accessible to user of the casing is no more than 58K.
10. cutting tool according to claim 2, it is characterised in that:
The fan includes:
Impeller is connected to the output end of the motor and rotates by axis of the second axis；
Flabellum is connected to the impeller and is formed with the first intersection on the surface of the impeller；
The wind guide vane is connected to the mounting portion and is formed with the second intersection on the surface of the mounting portion；
First intersection and second intersection are substantially vertical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821275373.XU CN208758720U (en) | 2018-08-08 | 2018-08-08 | Cutting tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821275373.XU CN208758720U (en) | 2018-08-08 | 2018-08-08 | Cutting tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208758720U true CN208758720U (en) | 2019-04-19 |
Family
ID=66131655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821275373.XU Active CN208758720U (en) | 2018-08-08 | 2018-08-08 | Cutting tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208758720U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113510305A (en) * | 2020-04-10 | 2021-10-19 | 南京德朔实业有限公司 | Reciprocating saw |
| CN113733249A (en) * | 2021-09-23 | 2021-12-03 | 江苏大艺科技股份有限公司 | Electric tool |
-
2018
- 2018-08-08 CN CN201821275373.XU patent/CN208758720U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113510305A (en) * | 2020-04-10 | 2021-10-19 | 南京德朔实业有限公司 | Reciprocating saw |
| CN113733249A (en) * | 2021-09-23 | 2021-12-03 | 江苏大艺科技股份有限公司 | Electric tool |
| CN113733249B (en) * | 2021-09-23 | 2023-02-28 | 江苏大艺科技股份有限公司 | Electric tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 211106 No. 529, 159, Jiangjun Avenue, Jiangning District, Nanjing, Jiangsu Province Patentee after: Nanjing Quanfeng Technology Co.,Ltd. Address before: No. 529, Jiangjun Avenue, Jiangning Economic and Technological Development Zone, Nanjing, Jiangsu Province Patentee before: NANJING CHERVON INDUSTRY Co.,Ltd. |
|
| CP03 | Change of name, title or address |