CN214499915U - Driving mechanism - Google Patents
Driving mechanism Download PDFInfo
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- CN214499915U CN214499915U CN202120367536.2U CN202120367536U CN214499915U CN 214499915 U CN214499915 U CN 214499915U CN 202120367536 U CN202120367536 U CN 202120367536U CN 214499915 U CN214499915 U CN 214499915U
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- worm
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Abstract
The utility model discloses a driving mechanism, which also comprises a motor body, a worm support and a worm transmission component which is used for forming a worm gear transmission structure with a transmission gear; the worm support is arranged on one side of the motor body; the worm transmission assembly is in driving insertion with the output end of the motor body and can be axially inserted into the through hole of the worm support; the side wall of the worm support in the radial direction is provided with a abdicating groove; the abdicating groove is used for enabling the worm transmission assembly to be meshed with the transmission gear in the abdicating groove. The utility model discloses can reduce the wearing and tearing of the inside bearing of motor body, avoid motor body to receive axial stress, noise when reducing the motor operation produces, extension motor life.
Description
Technical Field
The utility model belongs to the technical field of auto-parts and specifically relates to indicate an actuating mechanism.
Background
Along with the development of the automobile, humanized and comfortable configuration is higher and higher, more and more drivers or passengers manually operate, the operation is changed into electric operation, intellectualization is popularizing, for example, an electric folding rearview mirror gradually becomes automobile standard configuration, and like electric rotation, movement and angle adjustment of an automobile central control display screen, an intelligent adjustment model is intelligently sent by an automobile-mounted computer, and then adjustment is completed by an electric driving mechanism. However, in the existing electric folding rearview mirror, a hard connection mode is generally adopted for the motor shaft and the worm, namely, the worm is pressed on the motor shaft in an interference fit mode, and the mode easily causes damage inside the motor and bending of the motor shaft in the worm pressing process. And because the motor shaft is connected with the worm firmly, the axial transmission reaction force borne by the worm is transmitted to the motor shaft, so that parts such as the motor shaft and a bearing in the motor are abraded after being stressed, the motor generates noise, and the service life of the motor is shortened.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: a driving mechanism is provided to reduce motor noise and to extend the life of the motor.
In order to solve the technical problem, the utility model discloses a technical scheme be:
a driving mechanism further comprises a motor body, a worm support and a worm transmission assembly, wherein the worm transmission assembly is used for forming a worm gear transmission structure with a transmission gear;
the worm support is arranged on one side of the motor body;
the worm transmission assembly is in driving insertion with the output end of the motor body and can be axially inserted into the through hole of the worm support;
the side wall of the worm support in the radial direction is provided with a abdicating groove;
the abdicating groove is used for enabling the worm transmission assembly to be meshed with the transmission gear in the abdicating groove.
Further, the worm support comprises a chassis and a pipe column;
the pipe column is connected with the motor body through the chassis;
the abdicating groove is arranged on the side wall of the pipe column in the radial direction of the pipe column.
Further, one side of the worm support facing the motor body is provided with a motor positioning groove for positioning the output end of the motor body.
Further, the output end of the motor body is provided with an annular boss matched with the motor positioning groove.
Further, the worm transmission assembly comprises a worm body, a worm shaft, a coupler, a first bearing and a second bearing;
one end of the worm shaft is in transmission connection with the output end of the motor body through the coupler;
the first bearing, the worm body and the second bearing are sequentially sleeved outside the other end of the worm shaft, and the first bearing is positioned between the worm body and the coupler;
the worm body is in transmission connection with the worm shaft;
the worm body can the rotation of the abdicating groove for driving the transmission gear.
Further, one side of the through hole, which is far away from the motor body, is provided with an assembling groove which is concentric with the through hole;
the diameter of the assembling groove is larger than that of the through hole;
the assembling groove is in interference fit with the first bearing and the second bearing.
Furthermore, the receding groove is arranged on one side of the assembling groove in the radial direction.
Further, the outer diameter of the worm body is smaller than the diameter of the fitting groove.
Further, the worm body and the worm shaft are in interference fit.
Further, the abdicating groove is arc-shaped.
The beneficial effects of the utility model reside in that: the utility model discloses the mode transmission that worm drive assembly and motor body's output adopted the grafting is connected to fix a position worm drive assembly through the worm support, replace among the prior art motor shaft and worm interference fit's hard connected mode. In the utility model, no press-fitting stress exists between the worm transmission component and the motor body, the motor is not damaged, and the worm transmission component is not bent; the worm support is used for positioning between the motor body and the worm transmission assembly, no axial force is transmitted, noise is reduced, bearing loss probability inside the motor body is reduced, and the service life of the motor is prolonged.
Drawings
Fig. 1 is a schematic structural diagram of a driving mechanism of the present invention;
fig. 2 is a cross-sectional view of a drive mechanism of the present invention;
fig. 3 is an exploded view of a drive mechanism of the present invention;
fig. 4 is a schematic structural diagram of a worm support in the present invention;
fig. 5 is a schematic structural view of a middle worm support of the present invention;
fig. 6 is a schematic structural diagram of the middle coupling of the present invention.
Description of reference numerals:
1. a motor body; 11. an annular boss;
2. a worm support; 21. a through hole; 22. a chassis; 23. a pipe string; 231. a yielding groove; 24. a motor positioning groove; 25. assembling a groove;
3. a worm drive assembly; 31. a worm body; 32. a worm shaft; 33. a coupling; 34. a first bearing; 35. a second bearing; 351. a flat connection hole;
4. a screw; 5. a transmission gear.
Detailed Description
In order to explain the technical content, the objects and the effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
Referring to fig. 1 to 6, a driving mechanism further includes a motor body, a worm support, and a worm transmission assembly for forming a worm and gear transmission structure with a transmission gear;
the worm support is arranged on one side of the motor body;
the worm transmission assembly is in driving insertion with the output end of the motor body and can be axially inserted into the through hole of the worm support;
the side wall of the worm support in the radial direction is provided with a abdicating groove;
the abdicating groove is used for enabling the worm transmission assembly to be meshed with the transmission gear in the abdicating groove.
Further, the worm support comprises a chassis and a pipe column;
the pipe column is connected with the motor body through the chassis;
the abdicating groove is arranged on the side wall of the pipe column in the radial direction of the pipe column.
The utility model discloses a theory of operation lies in:
the worm support is used for positioning between the motor body and the worm transmission assembly, so that no press-fitting stress exists between the worm transmission assembly and the motor body, no axial transmission force exists, abrasion between the motor body and the worm transmission assembly is reduced, noise is reduced, and the service life of the motor is prolonged.
From the above description, the beneficial effects of the present invention are: the utility model discloses the mode transmission that worm drive assembly and motor body's output adopted the grafting is connected to fix a position worm drive assembly through the worm support, replace among the prior art motor shaft and worm interference fit's hard connected mode. In the utility model, no press-fitting stress exists between the worm transmission component and the motor body, the motor is not damaged, and the worm transmission component is not bent; the worm support is used for positioning between the motor body and the worm transmission assembly, no axial force is transmitted, noise is reduced, bearing loss probability inside the motor body is reduced, and the service life of the motor is prolonged.
Further, one side of the worm support facing the motor body is provided with a motor positioning groove for positioning the output end of the motor body.
According to the motor positioning groove, the positioning accuracy between the worm support and the motor body is improved, and the stability of motor transmission is ensured.
Further, the output end of the motor body is provided with an annular boss matched with the motor positioning groove.
Can know by the above-mentioned description the utility model discloses in owing to be provided with the worm support for it is spacing to carry out radially and axially to the worm drive subassembly, the concentricity of worm drive subassembly and motor can't be guaranteed, consequently set up with motor constant head tank assorted annular boss for further improve the positioning accuracy between worm support and the motor body, and can increase the concentricity of motor body and worm support.
Further, the worm transmission assembly comprises a worm body, a worm shaft, a coupler, a first bearing and a second bearing;
one end of the worm shaft is in transmission connection with the output end of the motor body through the coupler;
the first bearing, the worm body and the second bearing are sequentially sleeved outside the other end of the worm shaft, and the first bearing is positioned between the worm body and the coupler;
the worm body is in transmission connection with the worm shaft;
the worm body can the rotation of the abdicating groove for driving the transmission gear.
As can be seen from the above description, the worm shaft is in transmission connection with the output end of the motor body through the coupler, and only circumferential motion exists between the coupler and the motor body, and no axial acting force exists, so that the bearing wear probability inside the motor body is greatly reduced, and the service life of the motor is prolonged by the worm shaft; the first bearing and the second bearing are arranged and used for positioning the worm body in the worm support, the worm support is prevented from interfering the movement of the worm body, abrasion between the worm body and the worm support is also avoided, smooth movement of the worm body is ensured, and noise is reduced.
Further, one side of the through hole, which is far away from the motor body, is provided with an assembling groove which is concentric with the through hole;
the diameter of the assembling groove is larger than that of the through hole;
the assembling groove is in interference fit with the first bearing and the second bearing.
According to the above description, the assembling groove is formed, and the first bearing and the second bearing are in interference fit with the assembling groove, so that the worm body is positioned in the assembling groove, and the connection stability between the worm body and the motor body is indirectly improved.
Furthermore, the receding groove is arranged on one side of the assembling groove in the radial direction.
As can be seen from the above description, the receding groove is formed on one side of the assembling groove in the radial direction, so that the transmission gear and the worm body form a worm and gear transmission structure, and the transmission stability is ensured.
Further, the outer diameter of the worm body is smaller than the diameter of the fitting groove.
As can be seen from the above description, the outer diameter of the worm body is smaller than the diameter of the assembly groove, so that friction between the worm body and the assembly groove is avoided, and the service life is prolonged.
Further, the worm body and the worm shaft are in interference fit.
As can be seen from the above description, the interference fit between the worm body and the worm shaft ensures the stable transmission of the worm shaft to the worm body.
Further, the abdicating groove is arc-shaped.
According to the above description, the abdicating groove is arc-shaped, so that the fitting degree of the transmission gear and the abdicating groove can be improved, and the reliability of transmission connection between the worm body and the transmission gear is ensured.
Example one
Referring to fig. 1-6, the driving mechanism further comprises a motor body 1, a worm support 2 and a worm transmission assembly 3 for forming a worm and gear transmission structure with a transmission gear 5; the worm support 2 is arranged on one side of the motor body 1; the worm transmission component 3 and the output end of the motor body 1 can be inserted in a transmission way, and the worm transmission component 3 can be inserted into the through hole 21 of the worm support 2 along the axial direction; the side wall of the worm support 2 in the radial direction is provided with a yielding groove 231; the relief groove 231 is used to engage the worm drive assembly 3 with the drive gear 5 in the relief groove 231.
Example two
Referring to fig. 1-5, a driving mechanism, on the basis of the first embodiment, a worm support 2 comprises a chassis 22 and a pipe column 23; the pipe column 23 is connected with the motor body 1 through the chassis 22; the relief groove 231 is opened in the side wall of the stem 23 in the radial direction of the stem 23. Preferably, the base plate 22 is a circular disc, and the base plate 22 and the pipe column 23 are integrally injection-molded and are made of aluminum alloy or plastic. Specifically, the chassis 22 is detachably connected with one side of the motor body 1 through a screw 4.
Referring to fig. 2 to 5, a side of the worm support 2 facing the motor body 1 has a motor positioning groove 24 for positioning an output end of the motor body 1.
Referring to fig. 2 to 5, the output end of the motor body 1 has an annular boss 11 matching with the motor positioning groove 24. Specifically, the annular boss 11 is embedded into the motor positioning groove 24, so that the positioning of the motor and the worm support 2 can be realized.
Referring to fig. 2 to 6, the worm drive assembly 3 includes a worm body 31, a worm shaft 32, a coupling 33, a first bearing 34, and a second bearing 35; one end of the worm shaft 32 is in transmission connection with the output end of the motor body 1 through a coupler 33; the first bearing 34, the worm body 31 and the second bearing 35 are sequentially sleeved outside the other end of the worm shaft 32, and the first bearing 34 is positioned between the worm body 31 and the coupler 33; the worm body 31 is in transmission connection with the worm shaft 32; the worm body 31 is rotatable within the relief groove 231 for transmitting the transmission gear 5. Specifically, one end of the worm shaft 32 is a flat head, the coupling 33 is provided with flat connecting holes 351 with two communicated ends, and two ends of the flat connecting holes 351 are respectively matched with the output shaft of the motor body 1 and one end of the worm shaft 32 with the flat head; the first bearing 34 and the second bearing 35 are respectively pressed against both ends of the worm body 31 in the axial direction.
Referring to fig. 2 to 5, a side of the through hole 21 away from the motor body 1 has a fitting groove 25 concentrically disposed with the through hole 21; the diameter of the fitting groove 25 is larger than that of the through hole 21; the fitting groove 25 is interference-fitted with both the first bearing 34 and the second bearing 35.
Referring to fig. 2 to 5, the relief groove 231 is opened at one side of the fitting groove 25 in a radial direction.
Referring to fig. 2, the outer diameter of the worm body 31 is smaller than the diameter of the fitting groove 25. Specifically, the outer peripheral thread of the worm body 31 has a clearance with the inner wall of the fitting groove 25.
Preferably, the worm body 31 is interference fitted with the worm shaft 32.
Referring to fig. 1 to 5, the receding groove 231 has an arc shape.
To sum up, the utility model provides a pair of actuating mechanism adopts shaft coupling and worm axle to be connected worm body and motor body transmission, ensures motor body's output shaft and the concentricity of worm body, need not the pressure equipment, has reduced the axial stress that motor body bore, drives the worm and rotates in circumference, does not have wearing and tearing between messenger motor body and the worm body, and motor body can not be transmitted to the reaction force of worm yet, has improved motor body because of wearing and tearing behind the axial force and has produced the condition of noise, has prolonged the life of motor.
The above mentioned is only the embodiment of the present invention, and not the limitation of the patent scope of the present invention, all the equivalent transformations made by the contents of the specification and the drawings, or the direct or indirect application in the related technical field, are included in the patent protection scope of the present invention.
Claims (10)
1. A driving mechanism is characterized by further comprising a motor body, a worm support and a worm transmission assembly, wherein the worm transmission assembly is used for forming a worm gear transmission structure with a transmission gear;
the worm support is arranged on one side of the motor body;
the worm transmission assembly is in driving insertion with the output end of the motor body and can be axially inserted into the through hole of the worm support;
the side wall of the worm support in the radial direction is provided with a abdicating groove;
the abdicating groove is used for enabling the worm transmission assembly to be meshed with the transmission gear in the abdicating groove.
2. A drive mechanism according to claim 1, wherein the worm support comprises a chassis and a tubular string;
the pipe column is connected with the motor body through the chassis;
the abdicating groove is arranged on the side wall of the pipe column in the radial direction of the pipe column.
3. A drive mechanism according to claim 1, wherein the side of the worm support facing the motor body has a motor positioning slot for positioning the output of the motor body.
4. A drive mechanism according to claim 3, wherein the output end of the motor body has an annular boss which mates with the motor locating groove.
5. The drive mechanism as recited in claim 1, wherein the worm drive assembly comprises a worm body, a worm shaft, a coupling, a first bearing and a second bearing;
one end of the worm shaft is in transmission connection with the output end of the motor body through the coupler;
the first bearing, the worm body and the second bearing are sequentially sleeved outside the other end of the worm shaft, and the first bearing is positioned between the worm body and the coupler;
the worm body is in transmission connection with the worm shaft;
the worm body can the rotation of the abdicating groove for driving the transmission gear.
6. A drive mechanism according to claim 5, wherein the side of the through hole away from the motor body is provided with a fitting groove concentrically arranged with the through hole;
the diameter of the assembling groove is larger than that of the through hole;
the assembling groove is in interference fit with the first bearing and the second bearing.
7. The drive mechanism as claimed in claim 6, wherein the relief groove is opened at one side of the fitting groove in a radial direction.
8. A drive mechanism according to claim 6, wherein the outer diameter of the worm body is smaller than the diameter of the fitting groove.
9. The drive mechanism as recited in claim 6, wherein the worm body is an interference fit with the worm shaft.
10. The drive mechanism as recited in claim 1, wherein the relief groove is arcuate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120367536.2U CN214499915U (en) | 2021-02-09 | 2021-02-09 | Driving mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120367536.2U CN214499915U (en) | 2021-02-09 | 2021-02-09 | Driving mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214499915U true CN214499915U (en) | 2021-10-26 |
Family
ID=78220446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120367536.2U Active CN214499915U (en) | 2021-02-09 | 2021-02-09 | Driving mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214499915U (en) |
-
2021
- 2021-02-09 CN CN202120367536.2U patent/CN214499915U/en active Active
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