CN218556989U - Exhaust device and electric tool - Google Patents
Exhaust device and electric tool Download PDFInfo
- Publication number
- CN218556989U CN218556989U CN202121771641.9U CN202121771641U CN218556989U CN 218556989 U CN218556989 U CN 218556989U CN 202121771641 U CN202121771641 U CN 202121771641U CN 218556989 U CN218556989 U CN 218556989U
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- Prior art keywords
- vent hole
- main body
- exhaust
- reduction gearbox
- body part
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- 230000009467 reduction Effects 0.000 claims abstract description 48
- 230000000149 penetrating effect Effects 0.000 claims abstract description 14
- 230000007246 mechanism Effects 0.000 claims description 13
- 238000003860 storage Methods 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 4
- 239000004519 grease Substances 0.000 abstract description 15
- 238000012856 packing Methods 0.000 abstract 1
- 230000006872 improvement Effects 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 4
- 239000000428 dust Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 210000002268 wool Anatomy 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002026 carminative effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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Abstract
The utility model relates to an exhaust apparatus and electric tool, exhaust apparatus settle on the reducing gear box, and this exhaust apparatus is including being fixed in the oil cap on the reducing gear box and being fixed in the packing element in the oil cap. The oil cover includes a main body portion extending in an axial direction, a first air vent penetrating the main body portion in the axial direction, and a second air vent penetrating the main body portion in a radial direction. The second vent hole is communicated with the first vent hole, the first vent hole and the second vent hole form an exhaust channel, and the filling element is filled in the exhaust channel. The utility model has the advantages that the structure is simple by directly installing the filling element in the exhaust passage; and the gas in the reduction gearbox is discharged, so that the grease is prevented from overflowing.
Description
[ technical field ] A method for producing a semiconductor device
The utility model relates to an exhaust apparatus and electric tool, in particular to exhaust apparatus in impact tool field and have this exhaust apparatus's electric tool.
[ background ] A method for producing a semiconductor device
In the use process of a traditional electric tool such as an electric hammer, the high-speed movement of a driving mechanism can cause the temperature in a reduction gearbox to rise, so that the internal pressure of the reduction gearbox changes, grease overflows from the weak sealing part of the reduction gearbox, the phenomenon of oil leakage is caused, and the user experience is influenced; and as the grease continuously overflows in the reduction gearbox, poor lubrication of the driving mechanism can be caused, so that the service life of the whole machine is influenced.
To above-mentioned problem, can install exhaust apparatus on the current gear box casing, this exhaust apparatus is equipped with the exhaust passage with external intercommunication, is equipped with the wool felt in this exhaust passage for also can prevent that the grease from spilling over when the reduction box satisfies carminative. However, the existing exhaust device has many parts, and the exhaust device can be mounted with the wool felt after being disassembled by using an additional tool, so that the user experience is poor.
Accordingly, there is a need for an improved exhaust device and power tool to overcome the drawbacks of the prior art.
[ Utility model ] A method for manufacturing a semiconductor device
To the deficiency of the prior art, an object of the utility model is to provide an exhaust apparatus and electric tool of simple structure and difficult oil leak.
The utility model provides a prior art problem can adopt following technical scheme: an exhaust device is arranged on a reduction gearbox and comprises an oil cover fixed on the reduction gearbox and a filling element fixed in the oil cover; the oil cover comprises a main body part extending along the axial direction, a first vent hole axially penetrating through the main body part and a second vent hole radially penetrating through the main body part, the second vent hole is communicated with the first vent hole, an exhaust channel is formed between the first vent hole and the second vent hole, and the filling element is filled in the exhaust channel.
The further improvement scheme is as follows: the oil cover comprises a screwing part connected to the top of the main body part and a thread part arranged on the periphery of the main body part, the screwing part protrudes out of the periphery of the main body part in the radial direction, the thread part is positioned below the second ventilation hole, and the exhaust device is installed on the reduction gearbox through the thread part.
The further improvement scheme is as follows: the exhaust device comprises an air outlet channel positioned between the reduction gearbox and the oil cover, and the air outlet channel is positioned at the upper end of the threaded part.
The further improvement scheme is as follows: one end of the air outlet channel is communicated with the second vent hole, and the other end of the air outlet channel is communicated with the external air.
The further improvement scheme is as follows: the exhaust device comprises a sealing ring sleeved on the periphery of the main body part, the oil cover comprises an installation part arranged between the threaded part and the second vent hole, and the sealing ring is arranged in the installation part.
The further improvement scheme is as follows: the oil cover comprises an oil storage tank which penetrates through the main body part from the bottom along the axial direction, one end of the oil storage tank is communicated with the first vent hole, and the other end of the oil storage tank is communicated with the interior of the reduction gearbox.
The further improvement scheme is as follows: the oil storage tank comprises a connecting part connected between the first vent hole and the reduction gearbox and an extending part extending from the connecting part to the second vent hole, and the extending part is positioned on the outer side of the first vent hole.
The further improvement scheme is as follows: the cross-sectional area of the first vent hole is smaller than the cross-sectional area of the connecting portion.
The utility model provides a prior art problem still can adopt following technical scheme: a power tool, comprising: the motor rotates to drive the driving mechanism to move and drive the working head to do impact rotation movement; the exhaust device is the exhaust device.
Compared with the prior art, the utility model discloses following beneficial effect has: the exhaust device is composed of the integrated oil cover and the filling element directly fixed in the oil cover, the structure is simple, the filling element can be detached without extra tools, and the user experience is good; the oil cover comprises a first vent hole axially penetrating through the main body part and a second vent hole radially penetrating through the main body part, and the first vent hole and the second vent hole are communicated to form an exhaust channel so as to facilitate the outward discharge of gas in the reduction gearbox; and the filling element can be conveniently arranged in the channel to prevent the grease from overflowing.
[ description of the drawings ]
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings:
FIG. 1 is an overall sectional view of a power tool according to a preferred embodiment of the present invention;
FIG. 2 is an enlarged view of a portion of the exhaust device in the power tool of FIG. 1;
FIG. 3 is a schematic view of the oil cap in the exhaust apparatus shown in FIG. 2;
FIG. 4 is a schematic view of an alternative angle configuration of the oil cap in the exhaust system of FIG. 2;
fig. 5 is a cross-sectional view of the oil cover shown in fig. 3.
The meaning of the reference symbols in the figures:
100. the air exhausting device 1, the oil cover 11, the main body part 12, the first vent hole 13, the second vent hole 14, the air exhausting channel 15, the screwing part 16, the threaded part 17, the mounting part 18, the oil storage tank 2, the filling element 3, the sealing ring 4, the air outlet channel 200, the electric tool 201, the motor 202, the motor shell 203, the reduction box 2031, the opening 204, the driving mechanism 2041, the gear 2042, the eccentric shaft 2043, the connecting rod 2044, the piston 2045, the cylinder 2046, the impact hammer 2047, the impact rod 205, the working head 2045
[ detailed description ] A
The present invention will be described in further detail with reference to the accompanying drawings and embodiments.
Referring to fig. 1 and 2, an embodiment of the present invention relates to an electric tool 200, preferably, an electric hammer 200, which is widely used in the fields of construction, etc. The electric hammer 200 comprises a motor housing 202, a motor 201 accommodated in the motor housing 202, a reduction gearbox 203 connected to the motor housing 202, a driving mechanism 204 accommodated in the reduction gearbox 203, and a working head 205 mounted at the front end of the driving mechanism 204. The motor 201 rotates to drive the working head 205 to perform impact operation in the axial direction and rotate in the circumferential direction via the driving mechanism 204.
The reduction box 203 comprises an opening 2031 penetrating the top and grease filled in the reduction box 203. An operator can add grease into the reduction gearbox 204 through the opening 2041 to lubricate the driving mechanism 204 and prevent the driving mechanism 204 from rusting or accumulating dust to cause transmission obstacle in the long-term use process.
Specifically, the driving mechanism 204 includes a transmission portion driven by a motor and an output portion connected to the transmission portion. The transmission part includes a gear 2041 engaged with a pinion at the front end of the motor 201, an eccentric shaft 2042 connected to the gear 2041, a connecting rod 2043 connected to the eccentric shaft 2042, and a piston 2044 at the front end of the connecting rod. The motor 201 rotates the gear 2041 and the eccentric shaft 2042, and then drives the connecting rod 2043 to move, so as to drive the piston 2044 to reciprocate. The output part comprises a cylinder 2045 arranged in the reduction box 203, a hammer 2046 accommodated in the cylinder 2045 and an impact rod 2047 for transmitting the impact force of the hammer 2046. The piston 2044 is accommodated in the cylinder 2045, and the piston 2044, the hammer punch 2046 and the impact rod 2047 are coaxially disposed and can slide along the axial direction of the cylinder 2045. An air chamber is formed between the piston 2044 and the ram 2046, and the ram 2046 reciprocates under the driving force of the air chamber.
As the driving mechanism 204 generates heat due to friction in the movement process, the temperature in the reduction gearbox 203 is increased, the air pressure in the box body of the reduction gearbox 203 is increased, and grease overflows. In this embodiment, the electric hammer 200 further includes an air discharging device 100 connected to the opening 2031. The exhaust device seals the opening 2031 to prevent dust, and simultaneously adjusts the pressure difference between the inside and the outside of the reduction gearbox 203 to keep the pressure inside and the outside of the reduction gearbox 203 balanced, thereby achieving the effect of reducing the overflow of grease.
Referring to fig. 2 again, the exhaust device 100 includes an oil cover 1 fixed on the reduction box 203, a filling element 2 fixed in the oil cover 1, and a sealing ring 3 sleeved on the periphery of the oil cover 1. The connection mode of the oil cover 1 and the opening 2031 can be a threaded connection, a clamping connection or the like, so that the oil cover 1 is fixed on the reduction gearbox 203 to prevent dust from entering the reduction gearbox 203.
In the present embodiment, the oil cover 1 includes a main body portion 11 extending in the axial direction, a screwing portion 15 connected to a top portion of the main body portion 11, a threaded portion 16 opened on an outer periphery of the main body portion 11, and a mounting portion 17 located at an upper end of the threaded portion 16. The exhaust device 100 is mounted to the reduction gearbox 203 via the threaded portion 16. The sealing ring 3 is arranged in the mounting part 17, and when the oil cover 1 is mounted on the reduction gearbox 203, the sealing ring 3 is abutted against the inner wall of the reduction gearbox 203 so as to ensure the air tightness. The screwing part 12 protrudes from the periphery of the main body part 11 in the radial direction so as to screw the oil cover 1, detach the oil cover 1 from the reduction gearbox 203 and add grease to the driving mechanism.
As shown in fig. 3 to 5, the oil cover 1 further includes a first vent hole 12 axially penetrating the main body 11 and a second vent hole 13 radially penetrating the main body 11. The second vent hole 13 is communicated with the first vent hole 12, and the first vent hole 12 and the second vent hole 13 form an exhaust channel 14. The filling member is filled in the exhaust passage 14. The filling member 14 is preferably felt, which is elastic and has a certain air permeability, and which acts as a filling member allowing air to pass through the felt while preventing grease from escaping from the inside of the body of the reduction gearbox 203.
Referring to fig. 2 and 4, the oil cover 1 includes an oil reservoir 18 axially penetrating the main body 11 from the bottom. One end of the oil storage tank 18 is communicated with the first air hole 12, and the other end is communicated with the inside of the reduction gearbox 203. The exhaust device 100 comprises an air outlet channel 4 positioned between the reduction gearbox 203 and the oil cover 1, and the air outlet channel is positioned at the upper end of the threaded part 16. One end of the air outlet channel 4 is communicated with the second vent hole 13, and the other end is communicated with the outside air. The exhaust device 100 is used for allowing gas to flow to the outside from the inside of the reduction gearbox 203 through the oil storage tank 18, the exhaust channel 14 and the air outlet channel 4 when pressure difference is generated between the inside and the outside of the reduction gearbox 203, so that the inside and the outside of the reduction gearbox 203 are kept balanced.
In this embodiment, the oil reservoir 18 includes a connecting portion 181 connected to the first vent hole 12 and the reduction gear case 203, and an extending portion 182 extending from the connecting portion 181 toward the second vent hole 13, and the extending portion 182 is located outside the first vent hole. The cross-sectional area of the first vent hole 12 is smaller than that of the connecting part 181, so that the first vent hole 12 is slimmer relative to the oil storage tank 18, more grease overflowing from the reduction gearbox 203 remains in the oil storage tank 18, and gas can be normally discharged from the first vent hole 12 to reduce the overflow of the grease. In addition, the grease overflowing into the extension part 182 is accumulated and then returns to the reduction gearbox 203 along the inner wall to lubricate the reduction gearbox 203.
The exhaust device 100 of the utility model is composed of the integrated oil cover 1 and the filling element 2 directly fixed in the oil cover 1, the structure is simple, the disassembly of the filling element 2 can be realized without extra tools, and the user experience is good; the oil cover 1 comprises a first vent hole 12 axially penetrating through the main body part 11 and a second vent hole 13 radially penetrating through the main body part 11, and the first vent hole 12 is communicated with the second vent hole 13 to form an exhaust channel 14 so that the gas in the reduction gearbox 203 is discharged outwards; and the filling element 2 can be conveniently arranged in the channel to prevent the grease from overflowing.
The present invention is not limited to the above-described embodiments. It will be readily appreciated by those skilled in the art that there are numerous other alternatives to the exhaust device and power tool of the present invention without departing from the spirit and scope of the invention. The protection scope of the present invention is subject to the content of the claims.
Claims (9)
1. An exhaust device is arranged on a reduction gearbox and comprises an oil cover fixed on the reduction gearbox and a filling element fixed in the oil cover; the method is characterized in that: the oil cover comprises a main body part extending along the axial direction, a first vent hole axially penetrating through the main body part and a second vent hole radially penetrating through the main body part, the second vent hole is communicated with the first vent hole, an exhaust channel is formed between the first vent hole and the second vent hole, and the filling element is filled in the exhaust channel.
2. The exhaust apparatus according to claim 1, characterized in that: the oil cover comprises a screwing part connected to the top of the main body part and a threaded part arranged on the periphery of the main body part, the screwing part protrudes out of the periphery of the main body part in the radial direction, the threaded part is located below the second vent hole, and the exhaust device is mounted to the reduction gearbox through the threaded part.
3. The exhaust apparatus according to claim 2, characterized in that: the exhaust device comprises an air outlet channel positioned between the reduction gearbox and the oil cover, and the air outlet channel is positioned at the upper end of the threaded part.
4. The exhaust apparatus according to claim 3, characterized in that: one end of the air outlet channel is communicated with the second vent hole, and the other end of the air outlet channel is communicated with the external air.
5. The exhaust apparatus according to claim 2, characterized in that: the exhaust device comprises a sealing ring sleeved on the periphery of the main body part, the oil cover comprises an installation part arranged between the threaded part and the second vent hole, and the sealing ring is arranged in the installation part.
6. The exhaust apparatus according to claim 1, characterized in that: the oil cover comprises an oil storage tank which penetrates through the main body part from the bottom along the axial direction, one end of the oil storage tank is communicated with the first vent hole, and the other end of the oil storage tank is communicated with the interior of the reduction gearbox.
7. The exhaust apparatus according to claim 6, characterized in that: the oil storage tank comprises a connecting part connected between the first vent hole and the reduction gearbox and an extending part extending from the connecting part to the second vent hole, and the extending part is positioned on the outer side of the first vent hole.
8. The exhaust apparatus according to claim 7, characterized in that: the cross-sectional area of the first vent hole is smaller than the cross-sectional area of the connecting portion.
9. A power tool, comprising: the motor rotates to drive the driving mechanism to move and drive the working head to do impact rotation movement; the method is characterized in that: the exhaust device is as claimed in any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121771641.9U CN218556989U (en) | 2021-07-30 | 2021-07-30 | Exhaust device and electric tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121771641.9U CN218556989U (en) | 2021-07-30 | 2021-07-30 | Exhaust device and electric tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218556989U true CN218556989U (en) | 2023-03-03 |
Family
ID=85303430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121771641.9U Active CN218556989U (en) | 2021-07-30 | 2021-07-30 | Exhaust device and electric tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218556989U (en) |
-
2021
- 2021-07-30 CN CN202121771641.9U patent/CN218556989U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |