CN220570413U - Driving mechanism and micro-motor assembly - Google Patents
Driving mechanism and micro-motor assembly Download PDFInfo
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- CN220570413U CN220570413U CN202321940234.5U CN202321940234U CN220570413U CN 220570413 U CN220570413 U CN 220570413U CN 202321940234 U CN202321940234 U CN 202321940234U CN 220570413 U CN220570413 U CN 220570413U
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- transmission shaft
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- 230000007246 mechanism Effects 0.000 title claims abstract description 41
- 230000005540 biological transmission Effects 0.000 claims abstract description 87
- 230000007704 transition Effects 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
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Abstract
The utility model discloses a driving mechanism and a micro-motor assembly, wherein the driving mechanism comprises: the rotating piece is provided with a first assembly hole; the driven piece is arranged on one side of the rotating piece; one end of the transmission shaft is inserted into the first assembly hole, the other end of the transmission shaft extends out of the first assembly hole and is connected with the driven piece, the transmission shaft and the driven piece are of an integrated structure, and the transmission shaft is in transition fit with the first assembly hole; and the connecting piece is used for fixedly connecting the transmission shaft and the rotating piece. The technical scheme of the utility model reduces the possibility of damage to the driven part of the driving mechanism in the assembly process, and ensures the strength and reliability of the connection between the driving part and the driven part.
Description
Technical Field
The utility model relates to the technical field of driving devices, in particular to a driving mechanism and a micro-motor assembly.
Background
The high-speed micro motor is a miniaturized, high-torque and high-rotation-speed motor, and is commonly used in a handle of a surgical power device for providing driving force. When the driven member is driven by the high-speed micro motor, the driven member is generally sleeved outside the output shaft of the rotor by interference fit. Thus, the follower is repeatedly operated during the back and forth assembly.
However, the size of such followers is generally small, and there is a problem in that the followers are easily damaged during the assembly process.
Disclosure of Invention
The main object of the present utility model is to provide a drive mechanism aimed at reducing the possibility of damage to the driven member of the drive mechanism during assembly.
In order to achieve the above object, the driving mechanism according to the present utility model includes:
the rotating piece is provided with a first assembly hole;
the driven piece is arranged on one side of the rotating piece;
the transmission shaft is inserted into the first assembly hole, the other end of the transmission shaft extends out of the first assembly hole and is connected with the driven piece, the transmission shaft and the driven piece are of an integrated structure, and the transmission shaft is in transition fit with the first assembly hole; and
the connecting piece is used for fixedly connecting the transmission shaft and the rotating piece.
Optionally, the connecting piece is the connecting pin, the connecting pin is located the transmission shaft is kept away from the one end of follower, and wears to locate the transmission shaft with the rotating member.
Optionally, the shaft sleeve comprises a shaft sleeve, the first assembly hole is formed in the shaft sleeve, and the connecting pin penetrates through the transmission shaft and the shaft sleeve along the radial direction of the transmission shaft.
Optionally, the driving mechanism further includes a dynamic balance adjusting member, the dynamic balance adjusting member is sleeved outside the shaft sleeve, and the dynamic balance adjusting member is used for adjusting dynamic balance of the shaft sleeve in the rotation process.
Optionally, the dynamic balance adjuster covers the connection pin to block the connection pin from being separated from the transmission shaft.
Optionally, the dynamic balance adjusting piece is provided with a second assembly hole, the dynamic balance adjusting piece is sleeved outside the shaft sleeve through the second assembly hole, and the shaft sleeve is in interference fit with the second assembly hole.
Optionally, the driving mechanism further comprises a bearing, and the bearing is sleeved outside the shaft sleeve and is arranged on one side of the dynamic balance adjusting piece.
Optionally, a step structure is arranged on the periphery of the shaft sleeve, and the step structure is arranged on one side of the dynamic balance adjusting piece, which is away from the bearing.
Optionally, the connecting piece is a connecting key, one of the outer part of the transmission shaft and the inner wall of the first assembly hole is provided with the connecting key, and the other of the outer part of the transmission shaft and the inner wall of the first assembly hole is provided with a groove matched with the connecting key.
The utility model also provides a micro-motor assembly, which comprises the driving mechanism, wherein the driven part is a gear, and the rotating part is a micro-motor rotor; the micro-motor rotor is arranged in the micro-motor shell.
The driving mechanism in one technical scheme of the embodiment of the utility model comprises a rotating piece, a driven piece, a transmission shaft and a connecting piece, wherein the driven piece and the transmission shaft are of an integrated structure, the rotating piece is provided with a first assembly hole, one end of the transmission shaft far away from the driven piece is inserted into the first assembly hole, and the transmission shaft is connected with the rotating piece through the connecting piece, so that the rotating piece rotates to drive the transmission shaft to rotate, and the transmission shaft rotates to drive the driven piece to rotate. The transmission shaft is in transition fit with the first assembly hole, so that the transmission shaft and the first assembly hole are convenient to assemble, the assembly difficulty is low, and the possibility of damage of the transmission shaft during rotation of the transmission shaft and the rotating piece is reduced. The driven piece is connected with the rotating piece through the transmission shaft and the connecting piece, the rotating piece, the transmission shaft and the connecting piece are operated in the assembly process, and the operation on the driven piece is less, so that the possibility of damaging the driven piece in the assembly process is reduced, and the connection strength and the reliability between the driven piece and the rotating piece are ensured. On the other hand, when the follower size is less, realize being connected with the rotating member through transmission shaft and connecting piece, can avoid directly carrying out connection structure's processing and assembly to the follower to the manufacturing degree of difficulty of follower has been reduced, and then the manufacturing degree of difficulty of whole actuating mechanism has been reduced.
Drawings
In order to more clearly illustrate the embodiments of the present 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, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a partial cross-sectional view of one embodiment of a drive mechanism of the present utility model;
FIG. 2 is a schematic diagram of an embodiment of a driving mechanism according to the present utility model;
fig. 3 is a partial cross-sectional view of a rotary member of the drive mechanism of the present utility model.
Reference numerals illustrate:
| reference numerals | Name of the name | Reference numerals | Name of the name |
| 10 | Rotating member | 111 | First fitting hole |
| 12 | Ladder structure | 20 | Driven piece |
| 30 | Transmission shaft | 40 | Connecting piece |
| 50 | Dynamic balance adjusting piece | 60 | Bearing |
| 11 | Shaft sleeve |
The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
In the present utility model, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout includes three parallel schemes, for example "A and/or B", including the A scheme, or the B scheme, or the scheme where A and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.
The utility model provides a driving mechanism.
Referring to fig. 1 and 2, fig. 1 is a partial cross-sectional view of an embodiment of a driving mechanism according to the present utility model, and fig. 2 is a schematic structural view of an embodiment of a driving mechanism according to the present utility model.
In an embodiment of the present utility model, the driving mechanism includes:
a rotary member 10 provided with a first fitting hole 111;
a follower 20 provided at one side of the rotator 10;
the transmission shaft 30, one end of the transmission shaft 30 is inserted into the first assembly hole 111, the other end of the transmission shaft 30 extends out of the first assembly hole 111 and is connected with the driven piece 20, the transmission shaft 30 and the driven piece 20 are of an integrated structure, and the transmission shaft 30 is in transition fit with the first assembly hole 111; and
and a connecting member 40 for fixedly connecting the transmission shaft 30 and the rotary member 10.
The driving mechanism in one technical scheme of the embodiment of the utility model comprises a rotating member 10, a driven member 20, a transmission shaft 30 and a connecting member 40, wherein the driven member 20 and the transmission shaft 30 are of an integrated structure, the rotating member 10 is provided with a first assembly hole 111, one end of the transmission shaft 30 far away from the driven member 20 is inserted into the first assembly hole 111, and the transmission shaft 30 and the rotating member 10 are connected through the connecting member 40, so that the rotating member 10 rotates to drive the transmission shaft 30 to rotate, and the transmission shaft 30 rotates to drive the driven member 20 to rotate. The transmission shaft 30 is in transition fit with the first assembly hole 111, so that the transmission shaft 30 and the first assembly hole 111 are convenient to assemble, the assembly difficulty is low, and the possibility of damage of the transmission shaft 30 and the rotating piece 10 during rotation is reduced. The driven member 20 is connected with the rotating member 10 through the transmission shaft 30 and the connecting member 40, and the rotating member 10, the transmission shaft 30 and the connecting member 40 are operated in the assembly process, so that the operation on the driven member 20 is less, the possibility of damaging the driven member 20 in the assembly process is reduced, and the connection strength and reliability between the driven member 20 and the rotating member 10 are ensured. On the other hand, when the size of the driven member 20 is smaller, the driven member 20 is connected with the rotating member 10 through the transmission shaft 30 and the connecting member 40, so that the processing and the assembly of the connecting structure of the driven member 20 can be avoided, the manufacturing difficulty of the driven member 20 is reduced, and the manufacturing difficulty of the whole driving mechanism is further reduced.
In this embodiment, the connecting member 40 may be a pin, a key, or the like, the rotating member 10 may be an output shaft of a motor, an output shaft of a speed reducer, or the like, and the driven member 20 may be a gear, a cam, a rocker, a crank, or the like.
Alternatively, the connecting member 40 is a connecting pin, and the connecting pin is disposed at an end of the transmission shaft 30 away from the driven member 20, and penetrates the transmission shaft 30 and the rotating member 10.
Referring to fig. 1, in the present embodiment, the connecting member 40 is a connecting pin, the connecting pin is disposed at one end of the driving shaft 30 away from the driven member 20, pin holes are disposed on the driving shaft 30 and the rotating member 10 corresponding to the connecting pin, and the connecting pin is inserted into the pin holes to connect the driving shaft 30 and the rotating member 10, so that the driving shaft 30 can rotate along with the rotation of the rotating member 10, and further drive the driven member 20 to rotate. The connecting pin may pass through part of the drive shaft 30 or may pass completely through the drive shaft 30. The transmission shaft 30 and the rotating piece 10 are connected through the connecting pin, so that the structure is simple, the manufacturing difficulty is low, and the assembly is easy. The connecting pin is in clearance fit with the pin hole, and the connecting pin is prevented from falling off the pin hole through bonding or friction force in the assembly process. The connecting pin can be a cylindrical pin, a taper pin, a special-shaped pin or the like, the specific shape of the connecting pin can be adjusted and designed according to the needs, and the functional requirements can be met, and the connecting pin is not limited.
Alternatively, the rotary member 10 includes a shaft housing 11, and a first fitting hole 111 is provided in the shaft housing 11, and a connection pin penetrates the transmission shaft 30 and the shaft housing 11 in a radial direction of the transmission shaft 30.
Referring to fig. 1 and 3, in this embodiment, the rotating member 10 includes a shaft sleeve 11, a first assembly hole 111 is formed in the shaft sleeve 11, a rotation axis of the rotating member 10, a rotation axis of the shaft sleeve 11 and an axis of the first assembly hole 111 are coincident, the rotating member 10 is sleeved outside the transmission shaft 30 through the shaft sleeve 11, and a connecting pin penetrates the transmission shaft 30 and the shaft sleeve 11 along a radial direction of the transmission shaft 30, so that rotation of the rotating member 10 is transmitted to the transmission shaft 30, and further the driven member 20 is driven to rotate. The pin holes corresponding to the connecting pins on the transmission shaft 30 and the shaft sleeve 11 are through holes, and the processing is easy. Compared with the connecting pin penetrating through part of the transmission shaft 30, the connecting pin completely penetrates through the transmission shaft 30 and the shaft sleeve 11, so that the connecting strength between the shaft sleeve 11 and the transmission shaft 30 is high, and meanwhile, the force transmission is more uniform when the shaft sleeve 11 drives the transmission shaft 30 to rotate.
Optionally, the driving mechanism further includes a dynamic balance adjusting member 50, where the dynamic balance adjusting member 50 is sleeved outside the shaft sleeve 11, and the dynamic balance adjusting member 50 is used for adjusting dynamic balance of the shaft sleeve 11 during rotation.
Referring to fig. 1, in the present embodiment, the driving mechanism further includes a dynamic balance adjusting member 50, the dynamic balance adjusting member 50 is sleeved on the outer periphery of the shaft sleeve 11, and the dynamic balance of the shaft sleeve 11 is adjusted by adjusting the mass and the center of gravity of the dynamic balance adjusting member 50. In this embodiment, the rotating member 10 is a rotor of a motor, and the dynamic balance adjusting member 50 is a weight of the motor.
Alternatively, the dynamic balance adjuster 50 covers the connection pin to block the connection pin from being separated from the driving shaft 30.
Referring to fig. 1, in the present embodiment, the dynamic balance adjusting member 50 is sleeved outside the shaft sleeve 11 and covers the connecting pin, so that the connecting pin is blocked by the dynamic balance adjusting member 50 and cannot be separated from the transmission shaft 30, and the possibility of falling off of the connecting pin is reduced, thereby ensuring that the connecting pin firmly connects the transmission shaft 30 and the shaft sleeve 11. The dynamic balance adjusting member 50 can be fixed in position by interference fit with the shaft sleeve 11, and a limit structure can be arranged to prevent the dynamic balance adjusting member 50 from moving along the axial direction of the shaft sleeve 11.
Optionally, the dynamic balance adjusting member 50 is provided with a second assembly hole, and the dynamic balance adjusting member 50 is sleeved outside the shaft sleeve 11 through the second assembly hole, and the shaft sleeve 11 is in interference fit with the second assembly hole.
In this embodiment, the dynamic balance adjusting member 50 is sleeved outside the shaft sleeve 11 through the second assembly hole, and the shaft sleeve 11 is in interference fit with the second assembly hole, so that the dynamic balance adjusting member 50 is fixed at the outer position of the shaft sleeve 11, the possibility that the dynamic balance adjusting member 50 moves axially along the shaft sleeve 11 is reduced, and the possibility that the connecting pin is exposed and falls off is further reduced, so that firm connection between the shaft sleeve 11 and the transmission shaft 30 is ensured.
Optionally, the driving mechanism further includes a bearing 60, where the bearing 60 is sleeved outside the shaft sleeve 11 and is disposed on one side of the dynamic balance adjuster 50.
Referring to fig. 1, in the embodiment, the driving mechanism further includes a bearing 60, the bearing 60 is disposed on one side of the dynamic balance adjusting member 50, the bearing 60 can play a limiting role on the dynamic balance adjusting member 50, so as to reduce the possibility that the dynamic balance adjusting member 50 moves towards the side with the bearing 60, and further reduce the possibility that the connecting pin is exposed and falls off. In particular, in the present embodiment, the driving mechanism includes a micro motor, the bearing 60 is disposed inside the micro motor, the rotating member 10 is a micro motor rotor, and the bearing 60 connects the micro motor housing and the micro motor rotor.
Optionally, the outer periphery of the sleeve 11 is provided with a step structure 12, and the step structure 12 is provided on a side of the dynamic balance adjuster 50 facing away from the bearing 60.
Referring to fig. 1, in the present embodiment, a step structure 12 is disposed on the outer periphery of the shaft sleeve 11, the step structure 12 and the bearing 60 are disposed on two sides of the dynamic balance adjusting member 50, the step structure 12 also plays a limiting role on the dynamic balance adjusting member 50, so as to reduce the possibility that the dynamic balance adjusting member 50 moves towards the side provided with the step structure 12, and further reduce the possibility that the connecting pin is exposed and falls off.
Alternatively, the connection member 40 is a connection key, one of the outside of the transmission shaft 30 and the inner wall of the first fitting hole 111 is provided with the connection key, and the other of the outside of the transmission shaft 30 and the inner wall of the first fitting hole 111 is provided with a groove to be fitted with the connection key.
In this embodiment, the connecting member 40 is a connecting key (not shown), a key groove may be provided on the outside of the transmission shaft 30 corresponding to the connecting key, a groove may be provided on the inner wall of the first fitting hole 111 corresponding to the connecting key, a key groove may be provided on the inner wall of the first fitting hole 111, a groove may be provided on the outside of the transmission shaft 30, and a part of the connecting key may be inserted into the key groove, and another part of the connecting key may be inserted into the groove, thereby connecting the transmission shaft 30 and the rotating member 10. The transmission shaft 30 is connected with the rotating piece 10 through the connecting key, so that the connection is stable and is not easy to fall off. The specific form of the connecting key can be designed according to the requirement, and can be a flat key or a spline, etc., so that the functional requirement can be met, and the design is not limited.
The utility model also provides a micro-motor assembly, which comprises a driving mechanism and a micro-motor shell, wherein the specific structure of the driving mechanism refers to the embodiment, and as the micro-motor assembly adopts all the technical schemes of all the embodiments, at least has all the beneficial effects brought by the technical schemes of the embodiments, and the description is omitted. Wherein, driven piece 20 of actuating mechanism is the gear, and rotor 10 is micromotor rotor, micromotor rotor sets up in the inside of micromotor shell. The driven piece 20 is a gear, the gear and the transmission shaft 30 are of an integrated structure, the gear is connected with the motor rotor through the transmission shaft 30, the processing operation on the gear is reduced, the manufacturing difficulty of the gear is reduced, and the possibility of damage of the gear and the motor rotor during assembly is also reduced. In particular, in this embodiment, the modulus of the gear is less than 0.5. The rotating part 10 is a micro-motor rotor, the driven part 20 is directly connected with the motor rotor through the transmission shaft 30, so that the transmission structure is simplified, and the loss in the energy transmission process is reduced.
The foregoing description is only of the optional embodiments of the present utility model, and is not intended to limit the scope of the utility model, and all the equivalent structural changes made by the description of the present utility model and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the utility model.
Claims (10)
1. A drive mechanism, comprising:
the rotating piece is provided with a first assembly hole;
the driven piece is arranged on one side of the rotating piece;
the transmission shaft is inserted into the first assembly hole, the other end of the transmission shaft extends out of the first assembly hole and is connected with the driven piece, the transmission shaft and the driven piece are of an integrated structure, and the transmission shaft is in transition fit with the first assembly hole; and
the connecting piece is used for fixedly connecting the transmission shaft and the rotating piece.
2. The drive mechanism of claim 1, wherein the connecting member is a connecting pin, and the connecting pin is disposed at an end of the transmission shaft away from the driven member and penetrates the transmission shaft and the rotating member.
3. The drive mechanism as set forth in claim 2, wherein the rotating member includes a shaft housing, the first fitting hole is provided in the shaft housing, and the connecting pin penetrates the transmission shaft and the shaft housing in a radial direction of the transmission shaft.
4. The driving mechanism as recited in claim 3 further comprising a dynamic balance adjustment member, said dynamic balance adjustment member being disposed around said sleeve, said dynamic balance adjustment member being configured to adjust the dynamic balance of said sleeve during rotation.
5. The drive mechanism of claim 4, wherein the dynamic balance adjuster covers the connecting pin to block the connecting pin from separating from the drive shaft.
6. The driving mechanism as recited in claim 5 wherein said dynamic balance adjustment member is provided with a second mounting hole, said dynamic balance adjustment member being disposed through said second mounting hole in a sleeve-like manner on the exterior of said sleeve, said sleeve being in interference fit with said second mounting hole.
7. The drive mechanism of claim 5, further comprising a bearing, wherein the bearing is sleeved outside the sleeve and on one side of the dynamic balance adjuster.
8. The drive mechanism of claim 7, wherein a stepped structure is provided on an outer periphery of the sleeve, the stepped structure being provided on a side of the dynamic balance adjuster facing away from the bearing.
9. The drive mechanism of claim 1, wherein the connecting member is a connecting key, one of an outer portion of the drive shaft and an inner wall of the first fitting hole is provided with the connecting key, and the other of the outer portion of the drive shaft and the inner wall of the first fitting hole is provided with a groove to be fitted with the connecting key.
10. A micro-motor assembly comprising a drive mechanism as claimed in any one of claims 1 to 9, the driven member being a gear and the rotating member being a micro-motor rotor;
the micro-motor rotor is arranged in the micro-motor shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321940234.5U CN220570413U (en) | 2023-07-21 | 2023-07-21 | Driving mechanism and micro-motor assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321940234.5U CN220570413U (en) | 2023-07-21 | 2023-07-21 | Driving mechanism and micro-motor assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220570413U true CN220570413U (en) | 2024-03-08 |
Family
ID=90102452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321940234.5U Active CN220570413U (en) | 2023-07-21 | 2023-07-21 | Driving mechanism and micro-motor assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220570413U (en) |
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2023
- 2023-07-21 CN CN202321940234.5U patent/CN220570413U/en active Active
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