CN212497588U - Oil inlet device and electric tool with same - Google Patents
Oil inlet device and electric tool with same Download PDFInfo
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- CN212497588U CN212497588U CN202020496531.5U CN202020496531U CN212497588U CN 212497588 U CN212497588 U CN 212497588U CN 202020496531 U CN202020496531 U CN 202020496531U CN 212497588 U CN212497588 U CN 212497588U
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Abstract
The utility model discloses an oil feed device and electric tool who has this oil feed device, oil feed device includes: the oil can comprises a shell and at least one hole expanding part, the shell is limited to form an oil cavity, the hole expanding part is arranged on the shell, the hole expanding part extends from the shell to the inside of the oil cavity, the hole expanding part is provided with an oil inlet, and the oil inlet is communicated with the oil cavity; the oil guide rope is arranged in the oil inlet hole in a penetrating way and respectively protrudes out of two ends of the oil inlet hole; the outer diameter of the oil guide rope is larger than the inner diameter of the oil inlet hole. The oil guide rope is fixed in the oil inlet hole in an interference fit mode, the oil inlet hole is arranged on the reaming part through the reaming part, the axial distance of the oil inlet hole is increased, the matching effect of the oil inlet hole and the oil guide rope is further increased, the pressing force of the oil guide rope is guaranteed, and the oil inlet effect is improved.
Description
Technical Field
The utility model relates to an electric tool, in particular to oil feed device and electric tool who has this oil feed device.
Background
Generally, electric tools such as electric hammers and electric picks mainly rely on a transmission mechanism to drive a piston to reciprocate at a high speed in a cylinder, and lubricating oil needs to be added to improve the working efficiency and the service life of the tools. The feeding amount of the lubricating oil is extremely important. On one hand, the problem of oil leakage of the tool can be caused by excessive oil inlet amount, so that the user experience is influenced; on the other hand, if the oil inlet amount is too small, the lubricating effect between the cylinder parts is reduced, and the problems that the service life of the product and the functional quality are affected by cylinder pulling and the like are further caused.
As shown in fig. 1, in the existing electric tool, oil is fed in a manner of matching an oil guide rope 20 in an oil inlet hole 11 of an oil can 10, and although the matching manner of the oil guide rope 20 and the oil inlet hole 11 improves the oil feeding effect to a certain extent, the problem of too large or too small oil feeding amount occurs, the oil feeding amount is difficult to control, and the oil feeding effect needs to be further improved.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, an embodiment of the utility model provides an oil feed device and electric tool who has this oil feed device.
In order to achieve the above purpose, the technical scheme of the utility model is realized like this:
the embodiment of the utility model provides an oil feed device, oil feed device includes:
the oil can comprises a shell and at least one hole expanding part, the shell limits to form an oil cavity, the hole expanding part is arranged on the shell, the hole expanding part extends from the shell to the inside of the oil cavity, the hole expanding part is provided with an oil inlet, and the oil inlet is communicated with the oil cavity; and
the oil guide rope penetrates through the oil inlet hole and protrudes out of two ends of the oil inlet hole respectively; the outer diameter of the oil guide rope is larger than the inner diameter of the oil inlet hole.
Furthermore, the top end of the oil inlet hole is in a horn shape with a large upper part and a small lower part, and the bottom end of the oil inlet hole is in a horn shape with a large upper part and a small lower part.
Further, the matching length of the oil guide rope and the oil inlet hole is recorded as L, and the inner diameter of the oil inlet hole is recorded as D1L and D1The dimensional relationship of (A) is as follows: 2 x D1 is less than or equal to L is less than or equal to 3.5 x D1。
Further, the ratio of the outer diameter of the oil guide rope to the inner diameter of the oil inlet hole is as follows: 1.3 to 1.7.
Further, the oil guiding rope is a wool rope, and the density of the wool rope is as follows: 0.3 to 0.5g/cm3。
Further, the tension force of the oil guide rope passing through the oil inlet hole is marked as F,unit N, the inner diameter of the oil inlet hole is marked as D1And the unit mm and the value size of F meet the following requirements: 15 x D1≤F≤25*D1。
Further, the oil chamber is a chamber with an opening at one end, and the oil inlet device further comprises an oil cover, wherein the oil cover is connected with the shell and sealed at the opening of the oil chamber.
Furthermore, an oil filling port is formed in the oil cover, an oil mirror is arranged on the oil inlet device, and the oil mirror is installed at the oil filling port.
Further, the oil mirror is in threaded connection with the oil filling port.
The embodiment of the utility model provides an electric tool is still provided, electric tool includes:
the cylinder comprises a cylinder shell and a piston, and the piston reciprocates in the cylinder along the axial direction of the piston;
a crankshaft assembly including a crankcase coupled to the cylinder housing and a crankshaft positioned within the crankcase and coupled to the piston; and
in the oil inlet device, the axis of at least one oil inlet hole is located on the motion track of the eccentric shaft of the crankshaft; one end of the oil guide rope protrudes towards the inside of the crankcase and is in contact with the crankshaft.
Further, the contact height of the oil guide rope and the crankshaft is 3-8 mm.
The embodiment of the utility model provides an oil feed device and electric tool who has this oil feed device lead the oil rope and fix in the oil feed hole through interference fit's mode, through setting up the reaming portion, set up the inlet port on the reaming portion, increased the axial distance of inlet port, and then increased the cooperation effect of inlet port and lead the oil rope, guaranteed the packing force of leading the oil rope, improved the oil feed effect.
Drawings
FIG. 1 is a schematic structural diagram of an oil feeding device in the prior art;
fig. 2 is a partial schematic view of an alternative structure of the electric power tool according to the embodiment of the present invention.
Reference numerals:
an oil can 100; a housing 110; an oil chamber 111; an oil cover 120; an oil mirror 130; a reamer part 140; an oil inlet hole 141; a cylinder case 200; a plunger 210; a crankshaft assembly 300; a crankcase 310; a crankshaft 320; and an oil guide rope 400.
Detailed Description
In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined below to clearly and completely describe the technical solution of the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention, belong to the scope of protection of the invention.
In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear flat", etc. is based on the orientation or positional relationship shown in fig. 2, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "secured," etc. are to be construed broadly. For example, it may be a fixed connection, a detachable connection, or an integral connection. The two elements may be mechanically or electrically connected, directly or indirectly connected through an intermediate medium, or connected through a communication path between the two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art as appropriate.
The embodiment of the utility model provides an oil feed device, oil feed device includes: the oil can 100 and the oil guide rope 400, wherein the oil can 100 comprises a shell 110 and at least one hole expansion part 140, the shell 110 defines an oil cavity 111, the hole expansion part 140 is arranged on the shell 110, the hole expansion part 140 extends from the shell 110 to the inside of the oil cavity 111, the hole expansion part 140 is provided with an oil inlet 141, and the oil inlet 141 is communicated with the oil cavity 111; the oil guide rope 400 penetrates through the oil inlet hole 141 and protrudes out of two ends of the oil inlet hole 141 respectively; the outer diameter of the wick 400 is larger than the inner diameter of the oil inlet hole 141.
The oil guide rope 400 is fixed in the oil inlet 141 by interference fit, the upper portion of the oil guide rope 400 protrudes into a crankcase 310 described below, and the lower portion of the oil guide rope 400 protrudes into the oil chamber 111. The oil guide rope 400 can absorb the lubricating oil in the oil cavity 111 and then transfer the lubricating oil to the crankcase 310, and when the crankshaft 320 moves at a high speed, the lubricating oil can be contacted with at least one oil guide rope 400 to eject the lubricating oil absorbed by the oil guide rope 400 to form oil mist, so that the lubricating effect is improved. Therefore, the oil guiding rope 400 can be made of a flexible material with better adsorbability, such as a wool rope.
Through setting up reaming portion 140, set up inlet port 141 on reaming portion 140, increased inlet port 141's axial distance, and then increased inlet port 141 and lead the cooperation effect of oil rope 400, guaranteed the packing force of leading oil rope 400, improved the oil feed effect. The reamer part 140 may be integrally formed with the outer shell 110, both of which are of unitary construction.
Specifically, compared with the oil inlet 11 in fig. 1, due to the arrangement of the reaming portion 140 in fig. 2, the axial distance of the oil inlet 141 is increased, the length of the compression-type fit between the oil guide rope 400 and the oil inlet 141 is increased, so that the tensioning force of the oil guide rope 400 penetrating through the oil inlet 141 is increased, the oil inlet 141 with a proper height can be obtained by adjusting the height of the reaming portion 140, the pressing force of the oil guide rope 400 is kept proper, and the problem of oil leakage of a tool caused by the fact that the oil guide rope 400 has a large oil inlet due to insufficient pressing force is avoided; the problems that the pressing force of the oil guide rope 400 is too large, so that difficulty exists in assembling the oil guide rope 400, the oil inlet amount is small, and the lubricating effect of the cylinder part of the electric tool is not enough to be met, and the service life and the function quality of the product are influenced are solved. Even further, the phenomenon that the oil guide rope 400 is cut off by the high-speed movement of the crankshaft 320 due to the overlarge pressing force is avoided.
In some embodiments of the present invention, the top end of the oil inlet 141 is in a horn shape with a large top and a small bottom, and the bottom end of the oil inlet 141 is in a horn shape with a large top and a small bottom.
As shown in fig. 2, the change directions of the trumpet-shaped sizes of the upper and lower ends of the oil inlet hole 141 are opposite, and the trumpet-shaped design facilitates the installation of the oil guide rope 400 and further avoids the danger that the oil guide rope 400 is cut off.
The utility model discloses an in some embodiments, lead the cooperation length of oil rope 400 and inlet port 141 and write as L, unit mm, the internal diameter of inlet port 141 is write as D1Units mm, L and D1The dimensional relationship of (A) is as follows: 2 x D1 is less than or equal to L is less than or equal to 3.5 x D1。
Further, the outer diameter of the oil guiding rope 400 is marked as D2，D2And the inner diameter D of the oil inlet hole 1411Ratio D of2/D1Comprises the following steps: 1.3 to 1.7.
Without limitation, when wick 400 is a wool wick, the density of the wool wick is: 0.3 to 0.5g/cm3。
When the above parameter conditions are satisfied, the oil guide rope 400 can obtain a better tension force.
The tension of the wick 400 through the inlet 141 is denoted as F, in N, and the inner diameter of the inlet 141 is denoted as D1And the unit mm and the value size of F meet the following requirements: 15 x D1≤F≤25*D1. For example: outer diameter D of wool rope19mm, inner diameter D of the oil inlet hole 14126mm, wool rope density 0.35g/cm3The compression fit length of the wool rope is 15mm, and the measured tensioning force of the wool rope is F-120N.
The oil inlet effect of the oil inlet device is optimal when the tension force F meets the range value, when the value F is smaller than the range value, the pressing force of the wool rope is insufficient, when the value F is larger than the range value, the pressing force of the wool rope is overlarge,
in some embodiments of the present invention, the oil chamber 111 is a chamber with an opening at one end, the oil feeding device further includes an oil cover 120, and the oil cover 120 is connected to the housing 110 and sealed at the opening of the oil chamber 111.
As shown in fig. 2, the oil chamber 111 is open at the bottom, the oil inlet hole 141 is located at the top of the oil chamber 111, and the oil cover 120 seals the oil chamber 111 to store lubricating oil.
Further, an oil filling port is formed in the oil cover 120, the oil inlet device is provided with an oil mirror 130, and the oil mirror 130 is installed at the oil filling port. The oil mirror 130 is detachably installed to add lubricating oil into the oil chamber 111.
Without limitation, the oil mirror 130 is threadedly coupled to the oil fill port. The oil mirror 130 can be removed by rotation.
The embodiment of the utility model provides an electric tool is still provided, as shown in fig. 2, electric tool includes: the crankshaft assembly 300 comprises a cylinder, a crankshaft assembly 300 and an oil inlet device, wherein the cylinder comprises a cylinder shell 200 and a piston 210, and the piston 210 reciprocates along the axial direction of the piston 210 in the cylinder; the crankshaft assembly 300 includes a crankcase 310 and a crankshaft 320, the crankcase 310 is connected with the cylinder housing 200, the crankshaft 320 is located in the crankcase 310 and connected with the piston 210; the axis of at least one oil inlet hole 141 is located on the locus of the eccentric shaft motion of the crankshaft 320; one end of the oil guide rope 400 protrudes inward of the crank case 310 and contacts the crankshaft 320.
The utility model discloses electric tool includes but not limited to electric pick or electric hammer.
Further, the contact height of the oil guide rope 400 and the crankshaft 320 is 3-8 mm. In this within range, can guarantee that lead oil rope 400 oil feed is normal, can effectively reduce again and lead the risk that oil rope 400 was scraped absolutely.
To sum up, the utility model discloses an among the electric tool, lead the cooperation packing force of oil rope 400 and inlet port 141 through the adjustment, adjusted the oil input of leading oil rope 400, reached the oil feed effect of ideal, improved the lubrication action to the cylinder, also reduced the risk of electric tool oil leak simultaneously, improved product life and functional quality.
Other structures and operations of products according to embodiments of the present invention will be understood and readily implemented by those skilled in the art, and will not be described in detail.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (10)
1. The utility model provides an oil feed device, its characterized in that, oil feed device includes:
the oil can comprises a shell and at least one hole expanding part, the shell limits to form an oil cavity, the hole expanding part is arranged on the shell, the hole expanding part extends from the shell to the inside of the oil cavity, the hole expanding part is provided with an oil inlet, and the oil inlet is communicated with the oil cavity; and
the oil guide rope penetrates through the oil inlet hole and protrudes out of two ends of the oil inlet hole respectively; the outer diameter of the oil guide rope is larger than the inner diameter of the oil inlet hole.
2. The oil feeding device according to claim 1, wherein the top end of the oil inlet hole is in a horn shape with a large top and a small bottom, and the bottom end of the oil inlet hole is in a horn shape with a small top and a large bottom.
3. The oil feeding device according to claim 1, wherein the matching length of the oil guiding rope and the oil inlet hole is recorded as L, and the inner diameter of the oil inlet hole is recorded as D1L and D1The dimensional relationship of (A) is as follows: 2 x D1 is less than or equal to L is less than or equal to 3.5 x D1。
4. The oil feeding device of claim 1, wherein the ratio of the outer diameter of the oil guiding rope to the inner diameter of the oil inlet hole is as follows: 1.3 to 1.7.
5. The oil intake device of claim 1, wherein the oil guiding rope is a wool rope, and the density of the wool rope is as follows: 0.3 to 0.5g/cm3。
6. The oil intake device according to any one of claims 1 to 5, wherein the tension of the oil guiding rope passing through the oil inlet hole is expressed as F, and the unit of N, and the inner diameter of the oil inlet hole is expressed as D1And the unit mm and the value size of F meet the following requirements: 15 x D1≤F≤25*D1。
7. The oil intake device according to claim 1, wherein the oil chamber is a chamber with an opening at one end, the oil intake device further comprises an oil cover and an oil mirror, and the oil cover is connected with the housing and sealed at the opening of the oil chamber; the oil inlet device is characterized in that an oil filling port is formed in the oil cover, the oil inlet device further comprises an oil mirror, and the oil mirror is installed at the oil filling port.
8. The oil feed device of claim 7, wherein the oil mirror is threadably connected to the oil fill port.
9. A power tool, characterized in that the power tool comprises:
the cylinder comprises a cylinder shell and a piston, and the piston reciprocates in the cylinder along the axial direction of the piston;
a crankshaft assembly including a crankcase coupled to the cylinder housing and a crankshaft positioned within the crankcase and coupled to the piston; and
the oil intake arrangement of any one of claims 1 to 8, wherein the axis of at least one of the oil intake holes is located on the locus of motion of the eccentric shaft of the crankshaft; one end of the oil guide rope protrudes towards the inside of the crankcase and is in contact with the crankshaft.
10. The electric tool according to claim 9, wherein a contact height of the oil guide rope with the crankshaft is 3 to 8 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020496531.5U CN212497588U (en) | 2020-04-08 | 2020-04-08 | Oil inlet device and electric tool with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020496531.5U CN212497588U (en) | 2020-04-08 | 2020-04-08 | Oil inlet device and electric tool with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212497588U true CN212497588U (en) | 2021-02-09 |
Family
ID=74430406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020496531.5U Active CN212497588U (en) | 2020-04-08 | 2020-04-08 | Oil inlet device and electric tool with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212497588U (en) |
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2020
- 2020-04-08 CN CN202020496531.5U patent/CN212497588U/en active Active
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Address after: 226100 No. 699, Xiangjiang Road, Haimen Economic and Technological Development Zone, Nantong City, Jiangsu Province Patentee after: Jiangsu Dayi Technology Co.,Ltd. Address before: 22699, Haimen Economic and Technological Development Zone, Donghai City, Jiangsu Province Patentee before: JIANGSU DAYI M&E TOOLS Co.,Ltd. |