Electric air outlet transmission structure

Abstract

The utility model provides an electric air outlet transmission structure which comprises a shell, an air guide assembly is arranged on an air outlet of the shell, the air guide assembly comprises a plurality of air guide blades, and connecting rods are arranged at the ends of the air guide blades and can achieve synchronous rotation. An adjusting mechanism is arranged on the shell and comprises an adjusting motor fixed to the shell, a sliding sleeve arranged on the shell in a sliding fit mode and a driving shaft arranged in a guide hole of the sliding sleeve in a sleeved mode and connected with the adjusting motor, and the sliding direction of the sliding sleeve is parallel to the connecting line direction of the air guide blades. The sliding sleeve is provided with a shifting fork which is connected with the air guide assembly and used for shifting the air guide blades to rotate. The side wall of the driving shaft is provided with a protrusion and forms a protruding shaft, and the inner wall of the guide hole is provided with a spiral guide groove allowing the protruding shaft to be inserted therein and achieving meshing. The electric air outlet transmission structure is compact in structure, convenient to assemble, small in friction force, low in noise, free of clamping stagnation, good in operation stability and long in service life.

Description

Technical Field

[0001] This utility model relates to an automotive air conditioning vent, and more particularly to an electric vent transmission structure. Background Technology

[0002] Car air conditioning vents are a key component of the car's air conditioning system. They are responsible for delivering cool or warm air to all areas of the vehicle to meet passengers' temperature needs. Car air conditioning vents distribute cool and warm air to every corner of the car, ensuring all passengers enjoy a comfortable temperature. At the same time, they regulate airflow, keeping the air inside the car fresh and circulating.

[0003] In existing technologies, many air conditioning vents adopt a louvered structure, which is characterized by its automatic oscillation, eliminating the need for manual operation and allowing for flexible changes in the direction of airflow. This design eliminates the need for drivers to frequently adjust the vents, thus providing a more comfortable and convenient in-car environment.

[0004] Existing adjustment mechanisms generally use a screw and nut structure to drive the blades. This structure has defects such as obvious motion noise, high friction, and motion jamming, and is greatly affected by the mold injection process. Utility Model Content

[0005] Technical problems to be solved

[0006] The technical problem to be solved by this utility model is to provide an electric air outlet transmission structure that is compact, easy to assemble, has low friction, low noise, no jamming, and runs smoothly.

[0007] Technical solutions to the problem

[0008] This utility model provides an electric air outlet transmission structure, including a housing 1 with an air outlet 102. An air guide assembly 2 is provided on the air outlet 102. The air guide assembly 2 includes a plurality of parallel-arranged and rotatably mounted air guide blades 21 within the air outlet 102. Each air guide blade 21 has a connecting rod 22 at its end, enabling synchronous rotation. The housing 1 is provided with an adjustment mechanism for rotating the air guide blades 21 to achieve reversal. The adjustment mechanism includes an adjustment motor fixed to the housing 1. The device includes a sliding sleeve 6 that slides on the housing 1 and a drive shaft 5 that is fitted in the guide hole 610 of the sliding sleeve 6 and connected to the adjusting motor 4. The sliding direction of the sliding sleeve 6 is parallel to the line connecting each of the air guide blades 21. The sliding sleeve 6 is provided with a fork 7 that is connected to the air guide assembly 2 and is used to rotate the air guide blades 21. The side wall of the drive shaft 5 is provided with a protrusion that forms a convex shaft 53. The inner wall of the guide hole 610 is provided with a spiral guide groove 611 that allows the convex shaft 53 to be inserted and engaged.

[0009] Furthermore, there are at least two convex shafts 53, which are evenly distributed circumferentially.

[0010] Furthermore, the cross-section of the convex shaft 53 is elliptical or racetrack-shaped.

[0011] Furthermore, the length direction of the ellipse or the racetrack shape is parallel to the axial direction of the drive shaft.

[0012] Furthermore, the sidewall of the convex shaft 53 is inclined, and the sidewall of the spiral guide groove 611 is also inclined and fits against the sidewall of the convex shaft 53.

[0013] Furthermore, the end of the housing 1 is provided with a mounting base 3, and the adjustment mechanism is mounted on the mounting base 3.

[0014] Furthermore, the sliding sleeve 6 includes a cylindrical sliding sleeve body 61. The side wall of the sliding sleeve body 61 is symmetrically provided with two cylindrical protrusions to form a first guide portion 62. The length direction of the first guide portion 62 is parallel to the axis of the sliding sleeve body 61. The end of the mounting base 3 is provided with two columnar protrusions 31. The inner wall of the columnar protrusions 31 is provided with a strip-shaped guide groove 310 for the first guide portion 62 to be inserted and slide.

[0015] Furthermore, the housing 1 is provided with a limiting part for limiting the rotation angle of the drive shaft or limiting the sliding stroke of the sliding sleeve.

[0016] Furthermore, the end of the drive shaft is provided with an annular protrusion 52 for axial positioning, and the annular protrusion 52 is provided with a fan-shaped positioning groove 520. The housing 1 is provided with a positioning protrusion 32 that can be inserted into the positioning groove 520 and can limit the rotation angle of the drive shaft.

[0017] Furthermore, the end of the sliding sleeve 6 is provided with a cylindrical sleeve portion 64, and the shift fork is provided with a sleeve 71 that can accommodate the insertion of the sleeve portion. The sleeve 71 and the sleeve portion 64 are connected by a snap and / or bolt.

[0018] Beneficial effects

[0019] This utility model relates to an electric air outlet transmission structure. The adjustment mechanism is optimized by employing a convex shaft and spiral guide groove design, which reduces the contact area and friction, improving adjustment accuracy and stability. Simultaneously, it reduces operating noise and prevents jamming. The convex shaft has an elliptical or racetrack-shaped cross-section, which reduces its width, installation space, and the contact area between the convex shaft and the spiral guide groove, forming a line contact that prevents jamming. It also improves contact accuracy and fit, preventing gaps and impacts, reducing wear, and extending service life. The convex shaft sidewall uses a beveled structure, which not only optimizes the meshing angle between the convex shaft and the spiral guide groove but also enhances transmission stability, reduces friction, and improves the overall durability and efficiency of the mechanism. It also increases structural strength, reliability, and stability. Furthermore, the sleeve structure has been redesigned for easy and labor-saving assembly, and convenient maintenance. This utility model's electric air outlet transmission structure is compact, easy to assemble, has low friction, low noise, no jamming, good operational stability, and a long service life. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the electric air outlet transmission structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the electric air outlet transmission structure of this utility model from another angle;

[0022] Figure 3 This is a schematic diagram of the air guide assembly of the electric air outlet transmission structure of this utility model;

[0023] Figure 4 This is a schematic diagram of the adjustment mechanism of the electric air outlet transmission structure of this utility model;

[0024] Figure 5 This is an exploded structural diagram of the adjustment mechanism of the electric air outlet transmission structure of this utility model.

[0025] Figure 6 This is a cross-sectional view of the adjustment mechanism of the electric air outlet transmission structure of this utility model;

[0026] Figure 7 This is a schematic diagram of the installation of the shift fork in the electric air outlet transmission structure of this utility model;

[0027] Figure 8 This is a schematic diagram of the installation of the drive shaft of the electric air outlet transmission structure of this utility model;

[0028] Figure 9 This is a schematic diagram of the installation of the sliding sleeve in the electric air outlet transmission structure of this utility model;

[0029] Figure 10This is a cross-sectional view of the sliding sleeve of the electric air outlet transmission structure of this utility model;

[0030] Figure 11 This is a schematic diagram of the drive shaft of the electric air outlet transmission structure of this utility model. Detailed Implementation

[0031] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0032] See Figures 1-11 This utility model provides an electric air outlet transmission structure, including a housing 1. The housing has an air inlet 101 and an air outlet 102 that are interconnected. The air inlet 101 is used for air intake, and the air outlet 102 is used for air exhaust. An air guide assembly 2 is provided on the air outlet 102. The air guide assembly 2 includes air guide blades 21. The air guide blades 21 are rotatably installed in the air outlet 102, and their rotation axis is perpendicular to the length direction of the air outlet 102. In this embodiment, the air outlet 102 is a strip structure. There are multiple air guide blades, which are evenly distributed along the length direction of the air outlet 102. At the same time, the ends of each air guide blade 21 are connected by a connecting rod 22, so as to realize the synchronous rotation of each air guide blade 21 and ensure the consistency of the air direction.

[0033] Meanwhile, an adjustment mechanism is provided on the housing 1. This adjustment mechanism is used to rotate the guide vanes 21, thereby achieving reversal. The adjustment mechanism includes an adjustment motor 4, a sliding sleeve 6, and a drive shaft 5. The adjustment motor 4 is fixed to the housing 1. Specifically, a mounting base 3 is provided at the end of the housing 1. The mounting base 3 is detachably installed at the end of the housing by bolts and serves as a mounting carrier for installing the adjustment mechanism. Therefore, the adjustment motor 4 is fixed on the mounting base 3, and the sliding sleeve 6 is slidably fitted on the mounting base 3. Its sliding direction is parallel to the line connecting each guide vane 21, that is, parallel to the length direction of the air outlet 102. A guide hole 610 with a circular cross-section is provided in the sliding sleeve 6. The axis of the guide hole 610 is parallel to the sliding direction of the sliding sleeve 6. The drive shaft... The drive shaft 5 is fitted inside the guide hole 610 and can move axially and rotate radially. A protrusion is provided on the side wall of the drive shaft 5, forming a convex shaft 53. In this embodiment, the axis of the convex shaft is perpendicular to and relative to the axis of the drive shaft. At the same time, a spiral guide groove is provided on the inner wall of the guide hole 610, forming a spiral guide groove 611, which can accommodate the insertion of the convex shaft 53, thereby realizing the meshing connection between the two. The end of the drive shaft 5 is connected to the output shaft of the regulating motor 4, thereby realizing radial rotation. During the rotation, the convex shaft rotates synchronously. Due to the meshing of the convex shaft 53 and the spiral guide groove 611, the sliding sleeve 6 slides axially along the direction of the guide hole, realizing axial movement. At the same time, a fork 7 is provided on the sliding sleeve 6. The fork 7 is connected to the air guide assembly 2 and is used to rotate the air guide blade 21, thereby realizing the direction adjustment.

[0034] In this application, the spiral guide groove 611 has a spiral helix angle of 40°-50°, which ensures smooth driving, high adjustment accuracy, reduced friction, and reduced working noise.

[0035] To improve the smoothness of torque, in this application, there are at least two convex shafts 53 and they are evenly distributed circumferentially. The number of spiral guide grooves is the same as that of the convex shafts and they correspond one-to-one. In this embodiment, there are two convex shafts and two spiral guide grooves, which can reduce the contact area between the two, improve the smoothness of driving, reduce friction, and reduce noise.

[0036] To further improve the smoothness and durability of the drive, the cross-section of the cam 53 is elliptical or racetrack-shaped. At the same time, the length direction of the elliptical or racetrack shape is parallel to the axis of the drive shaft. This can reduce the width of the cam, reduce the installation space, reduce the contact area between the cam and the spiral guide groove, form a line contact, and avoid jamming. At the same time, it can improve the contact accuracy and fit, avoid gaps that could cause impacts, reduce wear, and extend service life.

[0037] To further improve the driving effect, especially the meshing accuracy between the cam shaft and the helical guide groove, in this application, the sidewall of the cam shaft 53 is inclined, forming a boss structure with an elliptical or racetrack-shaped cross-section and an inclined sidewall. The sidewall of the helical guide groove 611 is also inclined and fits against the sidewall of the cam shaft 53. The height of the cam shaft is 1 / 6 to 1 / 4 of the diameter of the drive shaft, and the angle between its inclined surface and the axis of the cam shaft is 18° to 25°. This structure not only optimizes the meshing angle between the cam shaft and the helical guide groove, but also enhances the stability of the transmission, effectively reduces friction, improves the durability and working efficiency of the overall mechanism, and at the same time, improves the structural strength and enhances the reliability and stability of use.

[0038] The sliding sleeve 6 includes a sliding sleeve body 61, which is cylindrical. Two strip-shaped protrusions are symmetrically arranged (circumferentially distributed) on the side wall of the sliding sleeve body 61, forming a first guide portion 62. The length direction of the first guide portion 62 is parallel to the axis of the sliding sleeve body 61. At the same time, two cylindrical protrusions 31 are provided at the end of the mounting base 3. Strip-shaped guide grooves 310 are provided on the inner wall (opposite surface) of the cylindrical protrusions 31. The length direction of the strip-shaped guide grooves 310 is parallel to the sliding direction of the sliding sleeve. The two strip-shaped guide grooves 310 are arranged facing each other, which can accommodate the axial insertion of the first guide portion 62, thereby realizing the sliding connection of the sliding sleeve 6. In order to improve the smoothness of operation and avoid jamming, multiple strip-shaped protrusion structures 621 are provided on the surface of the first guide portion. These structures can reduce the contact area with the strip-shaped guide grooves, avoid adhesion and adsorption, improve guiding accuracy, reduce frictional resistance, ensure smooth movement, and further optimize the operating efficiency and stability of the overall mechanism.

[0039] Meanwhile, a limiting part is provided on the housing 1 to limit the rotation angle of the drive shaft or the sliding stroke of the sleeve, thereby controlling the movement stroke of the shift fork and preventing jamming during the movement. In this embodiment, it is set between the drive shaft and the mounting base. The specific drive shaft 5 includes a shaft body 51, with an annular protrusion 52 at the tail end of the shaft body. The end face of the annular protrusion 52 forms a stepped surface for axial limiting of the drive shaft installation. Gear teeth 54 are provided on the end face of the shaft body 51 for connecting with the output end of the regulating motor to realize power input. A limiting groove 520 is provided on the annular protrusion 52. The limiting groove 520 is fan-shaped and its central angle is 45-90 degrees. At the same time, a limiting protrusion 32 is provided on the mounting base. The limiting protrusion 32 cooperates with the limiting groove 520, that is, it is located in the limiting groove, which can limit the rotation angle of the drive shaft and prevent over-travel. Its structure is compact, does not affect assembly, and has a good limiting effect.

[0040] In this application, the shift fork 7 includes a cylindrical sleeve 71. A bayonet 710 and a mounting hole 72 are provided on the side wall of the sleeve. A shift fork body 73 is provided on the side wall of the sleeve 71. A bayonet hole is provided at the end of the shift fork body 73 for connecting with the shaft on the air guide blade or connecting rod, that is, for connecting with the air guide assembly. At the same time, a cylindrical sleeve part 64 is provided at the end of the sliding sleeve 6, which can be fitted into the sleeve 71. A buckle 641 that can be inserted into the bayonet is provided on the side wall of the sleeve part, and a screw hole 63 corresponding to the mounting hole is provided. After assembly, the screw hole and the mounting hole are coaxial and are fixedly connected by screws.

[0041] This utility model relates to an electric air outlet transmission structure. The adjustment mechanism is optimized by employing a convex shaft and spiral guide groove design, which reduces the contact area and friction, improving adjustment accuracy and stability. Simultaneously, it reduces operating noise and prevents jamming. The convex shaft has an elliptical or racetrack-shaped cross-section, which reduces its width, installation space, and the contact area between the convex shaft and the spiral guide groove, forming a line contact that prevents jamming. It also improves contact accuracy and fit, preventing gaps and impacts, reducing wear, and extending service life. The convex shaft sidewall uses a beveled structure, which not only optimizes the meshing angle between the convex shaft and the spiral guide groove but also enhances transmission stability, reduces friction, and improves the overall durability and efficiency of the mechanism. It also increases structural strength, reliability, and stability. Furthermore, the sleeve structure has been redesigned for easy and labor-saving assembly, and convenient maintenance. This utility model's electric air outlet transmission structure is compact, easy to assemble, has low friction, low noise, no jamming, good operational stability, and a long service life.

[0042] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. An electric air outlet transmission structure, characterized in that: The device includes a housing with an air outlet, on which an air guide assembly is provided. The air guide assembly includes multiple parallel air guide blades rotatably mounted within the air outlet. The ends of the air guide blades are provided with connecting rods that enable synchronous rotation. The housing is provided with an adjustment mechanism for rotating the air guide blades to achieve reversal. The adjustment mechanism includes an adjustment motor fixed to the housing, a sliding sleeve slidably fitted on the housing, and a drive shaft fitted into a guide hole of the sliding sleeve and connected to the adjustment motor. The sliding direction of the sliding sleeve is parallel to the line direction connecting the air guide blades. The sliding sleeve is provided with a fork connected to the air guide assembly and used to rotate the air guide blades. The side wall of the drive shaft is provided with a protrusion forming a convex shaft, and the inner wall of the guide hole is provided with a spiral guide groove for inserting and engaging the convex shaft.

2. The electric air outlet transmission structure as described in claim 1, characterized in that: The convex shafts are at least two and are evenly distributed circumferentially.

3. The electric air outlet transmission structure as described in claim 1, characterized in that: The cross-section of the convex shaft is elliptical or racetrack-shaped.

4. The electric air outlet transmission structure as described in claim 3, characterized in that: The length direction of the ellipse or the racetrack shape is parallel to the axial direction of the drive shaft.

5. The electric air outlet transmission structure as described in claim 1, characterized in that: The sidewall of the convex shaft is inclined, and the sidewall of the spiral guide groove is also inclined and fits against the sidewall of the convex shaft.

6. The electric air outlet transmission structure as described in claim 1, characterized in that: The housing is provided with a mounting base at one end, and the adjustment mechanism is mounted on the mounting base.

7. The electric air outlet transmission structure as described in claim 6, characterized in that: The sliding sleeve includes a cylindrical sliding sleeve body. Two symmetrical protrusions are arranged on the side wall of the sliding sleeve body to form a first guide portion. The length direction of the first guide portion is parallel to the axis of the sliding sleeve body. The end of the mounting base is provided with two columnar protrusions. The inner wall of the columnar protrusions is provided with a strip-shaped guide groove for inserting the first guide portion and achieving sliding fit.

8. The electric air outlet transmission structure as described in claim 1, characterized in that: The housing is provided with a limiting part for limiting the rotation angle of the drive shaft or limiting the sliding stroke of the sleeve.

9. The electric air outlet transmission structure as described in claim 8, characterized in that: The end of the drive shaft is provided with an annular protrusion for axial positioning, and the annular protrusion is provided with a fan-shaped positioning groove. The housing is provided with a positioning protrusion that can be inserted into the positioning groove and can limit the rotation angle of the drive shaft.

10. The electric air outlet transmission structure as described in claim 1, characterized in that: The end of the sliding sleeve is provided with a cylindrical sleeve portion, and the shift fork is provided with a sleeve that can accommodate the insertion of the sleeve portion. The sleeve and the sleeve portion are connected by a snap and / or bolt.

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