CN219351451U - Transmission structure and electric tool - Google Patents
Transmission structure and electric tool Download PDFInfo
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- CN219351451U CN219351451U CN202320476478.6U CN202320476478U CN219351451U CN 219351451 U CN219351451 U CN 219351451U CN 202320476478 U CN202320476478 U CN 202320476478U CN 219351451 U CN219351451 U CN 219351451U
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- transmission structure
- output shaft
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Abstract
The utility model discloses a transmission structure and an electric tool, wherein the transmission structure comprises: an output shaft; the motor drives the output shaft to rotate around the axis, and the motor comprises a motor shaft rotating around the axis; the impact assembly is connected with the output shaft; the transmission assembly is connected with the motor and the output shaft and transmits the power of the motor to the output shaft; the transmission assembly comprises a connecting frame and a plurality of speed reducing assemblies which are linked, the connecting frame is connected with the impact assembly, and one of the speed reducing assemblies is connected with the motor. The electric tool comprises a casing and a transmission structure, wherein the transmission structure is fixedly arranged in the casing. According to the utility model, through the way of designing a plurality of speed reducing assemblies and connecting frames, the connection between the transmission assembly and the impact assembly is simpler and more reliable, and the power of the motor can be more stably and reliably transmitted to the output shaft; the utility model has simple and compact structure and lower cost, and is beneficial to the lightening of the whole machine of the electric tool.
Description
Technical Field
The utility model belongs to the technical field of electric tools, and particularly relates to a transmission structure and an electric tool.
Background
Under the working condition of the electric tool, the motor drives the impact assembly to rotate through the transmission assembly, the impact assembly intermittently and regularly strikes the output shaft to output torque in the rotating process, and the output shaft can fasten or loosen the fastening workpiece to finish the operation. The electric tool has the advantages that the electric tool is large in speed ratio under the working state, the existing electric tool is complex in structure assembly, the connecting mode of the transmission assembly and the impact assembly is also complex, and the intermediate shaft structure in the impact assembly has the defects of complex structure and high processing cost.
Therefore, in order to solve the above-mentioned problems, it is necessary to provide a transmission structure and an electric tool.
Disclosure of Invention
In view of the above, the present utility model is directed to a transmission structure and an electric tool.
In order to achieve the above object, an embodiment of the present utility model provides the following technical solution:
a transmission structure, the transmission structure comprising:
an output shaft;
a motor driving the output shaft to rotate about an axis, the motor including a motor shaft rotating about the axis;
an impact assembly coupled to the output shaft;
the transmission assembly is connected with the motor and the output shaft and transmits the power of the motor to the output shaft; the transmission assembly comprises a connecting frame and a plurality of speed reducing assemblies which are in linkage, the connecting frame is connected with the impact assembly, and one of the speed reducing assemblies is connected with the motor.
In one embodiment, the deceleration assembly comprises:
the first speed reduction assembly is installed in linkage with the motor shaft;
the second speed reduction assembly is installed in linkage with the first speed reduction assembly;
wherein the connecting frame is connected with the second speed reducing component and the impact component.
In an embodiment, the first speed reducing assembly includes a motor gear and a first planetary gear train fixedly mounted on the motor shaft, and the first planetary gear train includes a first ring gear disposed outside the motor gear, a first planetary gear disposed between the motor gear and the first ring gear, and a planet carrier connected to the first planetary gear.
In one embodiment, the second speed reducing assembly includes a second planetary gear coupled to the first speed reducing assembly and a second ring gear rotatably coupled to the second planetary gear.
In one embodiment, the transmission assembly further comprises a bearing disposed between the second reduction assembly and the impact assembly.
In an embodiment, the connecting frame comprises a positioning disc and a pin penetrating through the positioning disc, one end of the pin is connected with the speed reducing assembly, and the other end of the pin is connected with the impact assembly.
In one embodiment, the impact assembly includes:
the impact block is connected with the output shaft;
and the intermediate shaft is rotatably arranged on the impact block and is connected with the connecting frame.
In one embodiment, the intermediate shaft is provided with a connecting hole which is matched with the connecting frame.
In one embodiment, the impact block is provided with a positioning groove, and the output shaft is provided with a positioning lug matched with the positioning groove.
The technical scheme provided by the other embodiment of the utility model is as follows: a power tool, the power tool comprising:
a housing;
the transmission structure is fixedly arranged in the shell.
The utility model has the following beneficial effects:
according to the utility model, the transmission assembly is formed by designing the plurality of speed reduction assemblies and the connecting frame, so that the connection between the transmission assembly and the impact assembly is simpler and more reliable;
according to the utility model, the transmission assembly is beneficial to transmitting the power of the motor to the impact assembly, and the impact assembly is used for transmitting the power of the motor to the output shaft, so that the transmission power is more stable and reliable;
the intermediate shaft has the advantages of simple structure, compact assembly and lower production cost, and is beneficial to the lightening of the whole machine of the electric tool.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is an exploded view of a transmission structure according to an embodiment of the present utility model;
FIG. 2 is a schematic structural view of a connecting frame according to an embodiment of the present utility model;
FIG. 3 is a schematic cross-sectional view of FIG. 2;
FIG. 4 is a schematic diagram of a power tool according to an embodiment of the utility model;
fig. 5 is a schematic cross-sectional view of fig. 4.
Detailed Description
For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, which are generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, as provided in the accompanying drawings, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the embodiments of the present application, it should be understood that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like indicate orientations or positional relationships based on those shown in the drawings, or those conventionally put in place when the product of the application is used, or those conventionally understood by those skilled in the art, merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the application.
In the description of the embodiments of the present application, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other.
The technical solutions in the present application will be described below with reference to the accompanying drawings.
Referring to FIG. 1, the present utility model discloses a transmission structure comprising; an output shaft 1; a motor 2 driving the output shaft 1 to rotate around the axis, the motor 2 including a motor shaft 21 rotating around the axis; an impact assembly 3 connected to the output shaft 1; a transmission assembly 4 connecting the motor 2 and the output shaft 1 and transmitting power of the motor 2 to the output shaft 1; the transmission assembly 4 comprises a connecting frame 42 and a plurality of speed reduction assemblies 41 which are linked, the connecting frame 42 is connected with the impact assembly 3, and one of the speed reduction assemblies 41 is connected with the motor 2.
It can be appreciated that this embodiment provides a simple and reliable connection positioning manner for the connection between the transmission assembly 4 and the impact assembly 3, which is favorable for transmitting the power of the motor 2 to the impact assembly 3 through the transmission assembly 4 and transmitting the power of the motor 2 to the output shaft 1 through the impact assembly 3, and has simple and compact structure, lower cost and favorable for lightening the whole machine of the electric tool.
In one or more embodiments, the deceleration assembly 41 in this embodiment includes: a first deceleration assembly 411 mounted in linkage with the motor shaft 21; a second reduction assembly 412 mounted in linkage with the first reduction assembly 411; wherein the connecting frame 42 connects the second reduction assembly 412 and the impact assembly 3.
According to the design, the motor 2 can drive the first speed reducing component 411 to move and then drive the second speed reducing component 412 to move, so that the power of the motor 2 is transmitted to the transmission component 4.
In one or more embodiments, the first reduction assembly 411 of the present embodiment includes a motor gear 4111 fixedly mounted on the motor shaft 21 and a first planetary gear train including a first ring gear 4114 disposed outside the motor gear 4111, a first planetary gear 4112 disposed between the motor gear 4111 and the first ring gear 4114, and a carrier 4113 connected to the first planetary gear 4112.
According to the design, when the motor 2 is operated, the motor 2 drives the motor gear 4111 to rotate, the motor gear 4111 drives the first planetary gear 4112 to rotate, the first side of the first planetary gear 4112 is meshed with the first annular gear 4114, the second side of the first planetary gear 4112 is meshed with the teeth part on the planet carrier 4113, and the first annular gear 4114 is fixed, so that the first planetary gear 4112 can drive the planet carrier 4113 to axially rotate around the motor shaft 21, and meanwhile, the planet carrier 4113 can drive the second planetary gear train to operate because the planet carrier 4113 is linked with the second planetary gear train.
In one or more embodiments, the second reduction assembly 412 in this embodiment includes a second planetary gear 4121 that is coupled to the first reduction assembly 411 and a second ring gear 4122 that is rotatably coupled to the second planetary gear 4121.
According to this design, the motor 2 drives the first planetary gear system to rotate, the first planetary gear system drives the second planetary gear 4121 to rotate, the second planetary gear 4121 is meshed with the second annular gear 4122, and the second annular gear 4122 is fixed, so that the second planetary gear 4121 can drive the connecting frame 42 connected with the second planetary gear 4121 to axially rotate around the motor shaft 21.
Referring to fig. 1 in combination with fig. 5, in one or more embodiments, the transmission assembly 4 of the present embodiment further includes a bearing 43, the bearing 43 being disposed between the second reduction assembly 412 and the impact assembly 3.
According to this design, the planet carrier 4113 is connected to the second planetary gear set.
Referring to fig. 2 and 3, in one or more embodiments, the connecting frame 42 in this embodiment includes a positioning plate 421 and a pin 422 penetrating the positioning plate 421, where one end of the pin 422 is connected to the speed reducing assembly 41 and the other end is connected to the impact assembly 3.
According to the design, the motor 2 can drive the plurality of speed reducing assemblies 41 to operate together, and the connection and positioning between the transmission assembly 4 and the impact assembly 3 can be simply and reliably realized through the design of the pins 422 and the positioning plates 421, so that the whole structure is lighter and simpler.
Referring to fig. 1, in one or more embodiments, in order to facilitate installation and transmission of power of a motor 2 to an output shaft 1, an impact assembly 3 in this embodiment includes: an impact block 31 connected to the output shaft 1; the intermediate shaft 32 is rotatably mounted on the impact block 31, and the intermediate shaft 32 is connected to the connecting frame 42.
In one or more embodiments, the intermediate shaft 32 in this embodiment is provided with a connecting hole 321 for cooperating with the connecting frame 42 in order to facilitate the fixed connection of the impact assembly 3 with the transmission assembly 4.
It will be appreciated that the intermediate shaft 32 in this embodiment is simple in structure and easy to assemble, and facilitates the transmission of power from the motor 2 through the intermediate shaft 32 in the transmission assembly 4 and the impact assembly 3, thereby facilitating the operation of the transmission structure.
Referring to fig. 1 and fig. 5, in one or more embodiments, in order to facilitate the connection between the impact assembly 3 and the output shaft 1, the impact block 31 in this embodiment is provided with a positioning slot 311, and the output shaft 1 is provided with a positioning protrusion 11 that is matched with the positioning slot 311.
Referring to fig. 4 and 5, the present utility model also discloses a power tool, which includes: a housing 5; the transmission structure is fixedly arranged in the casing 5. In a preferred embodiment, the power tool may be a power impact wrench.
In summary, the working principle of the transmission structure in the utility model is as follows:
the motor gear 4111 is arranged on the motor shaft 21, the motor gear 4111 rotates relatively under the operation of the motor 2, and the first planetary gear 4112 and the planet carrier 4113 can rotate relatively along with the rotation of the motor gear 4111, namely, in the process that the first planetary gear 4112 rotates along with the motor gear 4111, the planet carrier 4113 is driven to rotate together along with the axial direction of the motor shaft 21;
the second planetary gear 4121 rotates with the carrier 4113 to rotate relatively, that is, during the rotation of the second planetary gear 4121 with the carrier 4113, the connecting frame 42 is driven to rotate together with the motor shaft 21 in the axial direction;
the connecting frame 42 is fixedly connected with the impact assembly 3, and the impact assembly 3 can rotate relatively along with the rotation of the connecting frame 42, so that the output shaft 1 is knocked to output torque.
The technical scheme shows that the utility model has the following beneficial effects:
according to the utility model, the transmission assembly is formed by designing the plurality of speed reduction assemblies and the connecting frame, so that the connection between the transmission assembly and the impact assembly is simpler and more reliable;
according to the utility model, the transmission assembly is beneficial to transmitting the power of the motor to the impact assembly, and the impact assembly is used for transmitting the power of the motor to the output shaft, so that the transmission power is more stable and reliable;
the intermediate shaft has the advantages of simple structure, compact assembly and lower production cost, and is beneficial to the lightening of the whole machine of the electric tool.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (10)
1. A transmission structure, characterized in that the transmission structure comprises:
an output shaft;
a motor driving the output shaft to rotate about an axis, the motor including a motor shaft rotating about the axis;
an impact assembly coupled to the output shaft;
the transmission assembly is connected with the motor and the output shaft and transmits the power of the motor to the output shaft; the transmission assembly comprises a connecting frame and a plurality of speed reducing assemblies which are in linkage, the connecting frame is connected with the impact assembly, and one of the speed reducing assemblies is connected with the motor.
2. The transmission structure according to claim 1, wherein:
the deceleration assembly includes:
the first speed reduction assembly is installed in linkage with the motor shaft;
the second speed reduction assembly is installed in linkage with the first speed reduction assembly;
wherein the connecting frame is connected with the second speed reducing component and the impact component.
3. The transmission structure according to claim 2, characterized in that:
the first speed reduction assembly comprises a motor gear and a first planetary gear train which are fixedly arranged on the motor shaft, wherein the first planetary gear train comprises a first annular gear arranged outside the motor gear, a first planetary gear arranged between the motor gear and the first annular gear, and a planet carrier connected with the first planetary gear.
4. The transmission structure according to claim 2, characterized in that:
the second speed reducing assembly comprises a second planetary gear and a second annular gear, wherein the second planetary gear is in linkage with the first speed reducing assembly, and the second annular gear is in rotary connection with the second planetary gear.
5. The transmission structure according to claim 2, characterized in that: the transmission assembly further comprises a bearing, and the bearing is arranged between the second speed reduction assembly and the impact assembly.
6. The transmission structure according to claim 1, wherein: the connecting frame comprises a positioning disc and a pin penetrating through the positioning disc, one end of the pin is connected with the speed reducing assembly, and the other end of the pin is connected with the impact assembly.
7. The transmission structure of claim 1, wherein the impact assembly comprises:
the impact block is connected with the output shaft;
and the intermediate shaft is rotatably arranged on the impact block and is connected with the connecting frame.
8. The transmission structure according to claim 7, wherein the intermediate shaft is provided with a connection hole fitted with the connection frame.
9. The transmission structure according to claim 7, wherein the impact block is provided with a positioning groove, and the output shaft is provided with a positioning projection which is mutually matched with the positioning groove.
10. An electric power tool, characterized in that the electric power tool comprises:
a housing;
a transmission structure as claimed in any one of claims 1 to 9, fixedly mounted in the housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320476478.6U CN219351451U (en) | 2023-03-13 | 2023-03-13 | Transmission structure and electric tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320476478.6U CN219351451U (en) | 2023-03-13 | 2023-03-13 | Transmission structure and electric tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219351451U true CN219351451U (en) | 2023-07-14 |
Family
ID=87103767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320476478.6U Active CN219351451U (en) | 2023-03-13 | 2023-03-13 | Transmission structure and electric tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219351451U (en) |
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2023
- 2023-03-13 CN CN202320476478.6U patent/CN219351451U/en active Active
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