CN220354425U - Output shaft for electric tool - Google Patents
Output shaft for electric tool Download PDFInfo
- Publication number
- CN220354425U CN220354425U CN202321547307.4U CN202321547307U CN220354425U CN 220354425 U CN220354425 U CN 220354425U CN 202321547307 U CN202321547307 U CN 202321547307U CN 220354425 U CN220354425 U CN 220354425U
- Authority
- CN
- China
- Prior art keywords
- arc surface
- main body
- stressed
- output shaft
- stressed arc
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 abstract description 12
- 230000005540 biological transmission Effects 0.000 abstract description 8
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Landscapes
- Silicon Compounds (AREA)
Abstract
The utility model provides an output shaft for an electric tool, and belongs to the technical field of electric tools; the key points of the technical scheme are as follows: the device comprises a first main body and a second main body, wherein the first main body is provided with a second stressed arc surface and a first stressed arc surface, and the second main body is provided with a fourth stressed arc surface and a third stressed arc surface; when the electric tool works, the first main body is matched with the second main body, the first main body rotates and drives the second main body to rotate, the second stressed arc surface and the fourth stressed arc surface in the process are attached, the first stressed arc surface and the third stressed arc surface are attached, and the problem that the strength of an output shaft is affected due to the fact that the stress contact surface is in an involute or cycloid shape is solved because the stress contact surface is in point-to-point contact in the transmission process, the direction of acting force from the tooth top to the tooth root is different, and the output shaft is enabled to be dispersed in the working process.
Description
Technical Field
The utility model relates to the technical field of electric tools, in particular to an output shaft for an electric tool.
Background
The output shaft of the electric tool is a key core part of the electric tool, and the precision and the service life of the part directly influence the service life of the electric tool; the force contact surface of the output shaft of the electric tool commonly used in the market at present is in an involute or cycloid shape; the contact surfaces of the involute and the cycloid are in point-to-point contact in the transmission process, so that the acting force directions from the tooth top to the tooth root are different, the force of the output shaft is dispersed in the working process, and the strength of the output shaft is further influenced; in addition, the involute arc line segment is affected by machining precision, so that the contact surface of involute work is uneven, and operation is not smooth.
Disclosure of Invention
The utility model aims to provide an output shaft for an electric tool, which solves the problems in the prior art. In order to achieve the above purpose, the present utility model provides the following technical solutions: including installing in the inside first main part of electric tool and can with first main part complex second main part, first main part with the second main part is symmetrical structure, be equipped with first atress arc surface and with the tangent second atress arc surface of first atress arc surface in the first main part, be equipped with in the second main part with the third atress arc surface of first atress arc surface laminating, still be equipped with in the second main part with the fourth atress arc surface of second atress arc surface laminating, fourth atress arc surface with the third atress arc surface is tangent.
Further, the first main body is further provided with a supporting arc surface, an excessive arc surface is arranged between the supporting arc surface and the first stressed arc surface, and the excessive arc surface is tangent with the first stressed arc surface and the supporting arc surface respectively.
Further, the diameter of the excessive arc surface is the ratio of the diameter of the first stressed arc surface to the diameter of the second stressed arc surface.
Further, the ratio of the distance from the end line of the second stressed circular arc surface, which is close to the rotation center of the first main body, to the rotation center of the first main body to the radius of the excessive circular arc surface is 1.18.
Further, a ratio of a distance from an end line of the second stressed circular arc surface away from the rotation center of the first main body to a radius of the second stressed circular arc surface is 6.34.
Further, the ratio of the diameter of the first stressed circular arc surface to the diameter of the second stressed circular arc surface is 26.1:4.1.
compared with the prior art, the utility model has the beneficial effects that:
according to the utility model, the first stressed arc surface and the third stressed arc surface which are mutually attached, and the second stressed arc surface and the fourth stressed arc surface which are mutually attached are arranged on the first main body and the second main body, when the electric tool works, the first main body is matched with the second main body, the first main body rotates and drives the second main body to rotate, and in the process, the stress is exerted on the arc surfaces, so that the problem that the strength of an output shaft is influenced due to the fact that the force contact surface is in an involute or cycloid shape, and the first main body and the second main body are in point-to-point contact in the transmission process, so that the acting force directions from tooth tops to tooth roots are different, so that the output shaft is dispersed in the working process is solved; and because the arc surface is convenient to process relative to the involute arc line segment, the processing precision of the arc surface is higher, so that the contact surface of the first main body and the second main body in the transmission process is uniformly stressed, and the operation is smooth.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
FIG. 2 is a schematic structural view of the first body;
fig. 3 is a schematic structural view of the second body.
Wherein: 1. a first body; 2. a second body; 3. the second stressed arc surface; 4. the first stressed arc surface; 5. a fourth stressed arc surface; 6. a third stressed arc surface; 7. a transition arc surface; 8. and (5) supporting the arc surface.
Detailed Description
In order to further describe the technical means and effects adopted by the present utility model for achieving the intended purpose, the following detailed description will refer to the specific implementation, structure, characteristics and effects according to the present utility model with reference to the accompanying drawings and preferred embodiments.
Examples: referring to fig. 1 to 3, an output shaft for a power tool includes a first body 1 mounted inside the power tool and a second body 2 engageable with the first body 1, the first body 1 being engageable with the second body 2 when the power tool is started, so that torque is transmitted from the first body 1 to the second body 2; the first main body 1 and the second main body 2 are of symmetrical structures, so that the first main body 1 and the second main body 2 are convenient to produce, process and bear uniform force; the second stressed arc surface 3 and the first stressed arc surface 4 tangent to the second stressed arc surface 3 are arranged on the first main body 1, so that smooth transition between the arc surfaces is ensured, and stress concentration is prevented; the second main body 2 is provided with a fourth stressed arc surface 5 which is jointed with the second stressed arc surface 3, the second main body 2 is also provided with a third stressed arc surface 6 which is jointed with the first stressed arc surface 4, the fourth stressed arc surface 5 is tangential to the third stressed arc surface 6, when the electric tool is started, the first main body 1 is matched with the second main body 2, namely the second stressed arc surface 3 is jointed with the fourth stressed arc surface 5, the first stressed arc surface 4 is jointed with the third stressed arc surface 6, and the problem that the strength of an output shaft is influenced because the force direction of the output shaft is dispersed in the working process due to the fact that the stress contact surface is in point-to-point contact under the condition of involute or cycloid shape is eliminated, and the problem that the strength of the output shaft is influenced because the stress contact surface is in point-to-point contact in the transmission process is solved; and because the arc surface is convenient to process relative to the involute arc line segment, the processing precision of the arc surface is higher, so that the contact surface of the first main body 1 and the second main body 2 in the transmission process is uniformly stressed, and the operation is smooth.
The first main body 1 is further provided with a supporting arc surface 8, an excessive arc surface 7 is arranged between the supporting arc surface 8 and the first stressed arc surface 4, stress concentration is prevented, the excessive arc surface 7 is tangent to the first stressed arc surface 4 and the supporting arc surface 8 respectively, and smooth transition between all the arc surfaces is ensured.
The diameter of the excessive arc surface 7 is the ratio of the diameter of the first stressed arc surface 4 to the diameter of the second stressed arc surface 3, which is beneficial to improving the strength of the first main body 1 and prolonging the service life of the first main body 1; the ratio of the distance from the end line of the second stressed arc surface 3, which is close to the rotation center of the first main body 1, to the rotation center of the first main body 1 to the radius of the excessive arc surface 7 is 1.18, the ratio of the distance from the end line of the second stressed arc surface 3, which is far away from the rotation center of the first main body 1, to the rotation center of the first main body 1 to the radius of the second stressed arc surface 3 is 6.34, and the ratio of the diameter of the first stressed arc surface 4 to the diameter of the second stressed arc surface 3 is 26.1:4.1, the design of the ratio is beneficial to the symmetry and the balance of the first main body 1 and the second main body 2, so that the stress of the contact surface is more uniform.
In the utility model, the heat treatment modes of the first main body 1 and the second main body 2 are vacuum carburization and cryogenic treatment, after the heat treatment, the surface hardness of the first main body 1 and the second main body 2 is 700HV1, the internal toughness of the first main body 1 and the second main body 2 is improved, and the service lives of the first main body 1 and the second main body 2 are prolonged.
Principle of operation
When the electric tool is started, the first main body 1 is matched with the second main body 2, namely the second stressed arc surface 3 is matched with the fourth stressed arc surface 5, the first stressed arc surface 4 is matched with the third stressed arc surface 6, and therefore torque is transmitted from the first main body 1 to the second main body 2; in the process, as the joint mode of the arc surfaces is surface contact, the problem that the strength of an output shaft is influenced due to the fact that the acting force direction from the tooth top to the tooth root is different because the first main body 1 and the second main body 2 are in point-to-point contact in the transmission process under the condition that the forced contact surfaces are involute or cycloid is solved, and the strength of the output shaft is influenced due to the fact that the force of the output shaft is dispersed in the working process; and because the arc surface is convenient to process relative to the involute arc line segment, the processing precision of the arc surface is higher, so that the contact surface of the first main body 1 and the second main body 2 in the transmission process is uniformly stressed, and the operation is smooth.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "upper," "lower," "left," "right," "front," "back," and the like are used herein for illustrative purposes only.
Claims (6)
1. An output shaft for an electric tool, comprising a first body (1) mounted inside the electric tool and a second body (2) capable of being mated with the first body (1), characterized in that: the novel bearing device comprises a first main body (1) and a second main body (2), wherein the first main body (1) is of a symmetrical structure, a first stressed arc surface (4) and a second stressed arc surface (3) tangential to the first stressed arc surface (4) are arranged on the first main body (1), a third stressed arc surface (6) attached to the first stressed arc surface (4) is arranged on the second main body (2), a fourth stressed arc surface (5) attached to the second stressed arc surface (3) is also arranged on the second main body (2), and the fourth stressed arc surface (5) is tangential to the third stressed arc surface (6).
2. An output shaft for a power tool as defined in claim 1, wherein: the novel bearing support is characterized in that a supporting arc surface (8) is further arranged on the first main body (1), an excessive arc surface (7) is arranged between the supporting arc surface (8) and the first stressed arc surface (4), and the excessive arc surface (7) is tangential to the first stressed arc surface (4) and the supporting arc surface (8) respectively.
3. An output shaft for a power tool as defined in claim 2, wherein: the diameter of the excessive arc surface (7) is the ratio of the diameter of the first stressed arc surface (4) to the diameter of the second stressed arc surface (3).
4. An output shaft for a power tool as defined in claim 2, wherein: the ratio of the distance from one end line of the second stressed arc surface (3) close to the rotation center of the first main body (1) to the radius of the excessive arc surface (7) is 1.18.
5. An output shaft for a power tool as defined in claim 1, wherein: the ratio of the distance from one end line of the second stressed arc surface (3) far away from the rotation center of the first main body (1) to the radius of the second stressed arc surface (3) is 6.34.
6. An output shaft for a power tool as defined in claim 1, wherein: the ratio of the diameter of the first stressed arc surface (4) to the diameter of the second stressed arc surface (3) is 26.1:4.1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321547307.4U CN220354425U (en) | 2023-06-16 | 2023-06-16 | Output shaft for electric tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321547307.4U CN220354425U (en) | 2023-06-16 | 2023-06-16 | Output shaft for electric tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220354425U true CN220354425U (en) | 2024-01-16 |
Family
ID=89484171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321547307.4U Active CN220354425U (en) | 2023-06-16 | 2023-06-16 | Output shaft for electric tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220354425U (en) |
-
2023
- 2023-06-16 CN CN202321547307.4U patent/CN220354425U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN220354425U (en) | Output shaft for electric tool | |
| CN201002148Y (en) | Synchronization belt wheel transmission structure for chain saw mill | |
| CN218136512U (en) | Clamp device for machining gearbox shell | |
| CN213575372U (en) | Direct current gear motor for electric tarpaulin | |
| CN201615330U (en) | Improved motorcycle oil pump | |
| CN212868179U (en) | Powder metallurgy combined positioning bearing for sewing machine | |
| CN201041219Y (en) | Cycloidal planetary gear speed reducer possessing input axis system unloading structure | |
| CN219053679U (en) | Precise machining tool for diamond drill bit | |
| CN216706770U (en) | Axial flexible positioning fixture for machining speed reducer gear | |
| CN210265242U (en) | Novel pump shaft | |
| CN217394866U (en) | Hat-shaped speed reducer assembling tool | |
| CN214578650U (en) | Integral type staggered shaft worm and gear speed reducer | |
| CN2387320Y (en) | Cycloidal pinwheel decelerator | |
| CN220680279U (en) | Inner and outer angle polishing device for piston ring production and processing | |
| CN218951664U (en) | Gold feeding seat of split type roller car | |
| CN211804209U (en) | Straight pipe groove cutting mechanical device for industrial manufacturing | |
| CN211834775U (en) | Dental handpiece's tooth axle transmission structure | |
| CN213888511U (en) | Arc tooth's socket processingequipment of shaft coupling | |
| CN217617949U (en) | Supporting mechanism for cutting machining of drill bit | |
| CN220016006U (en) | Double-reducer machine tool transmission structure | |
| CN214838234U (en) | Duplex driving gear assembly | |
| CN219317416U (en) | Crankshaft mechanism of cleaning machine | |
| CN213197068U (en) | Cylindrical grinding device of surface grinding machine | |
| CN221019780U (en) | Angle head for machining fixed clamp body | |
| CN216490093U (en) | Driving structure of hydraulic pipe fitting machining tool |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |