CN215444934U

CN215444934U - Driver for automobile heating, ventilating and air conditioning

Info

Publication number: CN215444934U
Application number: CN202121656152.9U
Authority: CN
Inventors: 陆磊; 方芳; 洪电; 郑博强; 马宇飞
Original assignee: Aml Automotive Components Wuxi Co ltd
Current assignee: Aml Automotive Components Wuxi Co ltd
Priority date: 2021-07-20
Filing date: 2021-07-20
Publication date: 2022-01-07
Anticipated expiration: 2031-07-20

Abstract

The utility model relates to a driver for an automobile heating, ventilating and air conditioning. The driver comprises a motor, a gear transmission mechanism driven by the motor and an output gear driven by the gear transmission mechanism. The motor includes the pivot, gear drive establishes including fixed cover the worm of the output of pivot and with worm gear of worm meshing, the worm has the drive screw thread that two or more than two thread lines formed, the drive screw thread with worm gear meshing is used for the drive the worm gear. The utility model can improve the output speed without changing the structure, volume and other components of the driver.

Description

Driver for automobile heating, ventilating and air conditioning

[ technical field ] A method for producing a semiconductor device

The utility model relates to the field of automobile heating, ventilating and air conditioning, in particular to a driver for an automobile heating, ventilating and air conditioning.

[ background of the utility model ]

The conventional driver of the vehicle heating, ventilating and air conditioning includes a motor, a worm and a worm wheel. The worm is fixedly sleeved on an output shaft of the motor and rotates concentrically with the output shaft. The worm wheel comprises a large gear and a small gear which are coaxially fixed, the large gear is meshed with the worm so as to be driven by the worm, and the small gear rotates coaxially with the large gear so as to realize speed reduction output. It will be appreciated that to increase the output speed, it is common practice to vary the ratio of the outer diameters of the worm and pinion gears, but this can result in a change in the configuration and volume of the drive, with corresponding changes being required in the other components associated with the drive.

[ Utility model ] content

An object of the present invention is to increase the output speed without changing the structure, volume, and other components of the driver.

The utility model provides a driver for an automobile heating, ventilating and air conditioning, which comprises a motor, a gear transmission mechanism driven by the motor and an output gear driven by the gear transmission mechanism, wherein the motor comprises a rotating shaft, the gear transmission mechanism comprises a worm fixedly sleeved at the output end of the rotating shaft and a worm wheel meshed with the worm, the worm is provided with a driving thread formed by two or more thread lines, and the driving thread is meshed with the worm wheel to drive the worm wheel.

In one embodiment, the drive thread of the worm is a drive thread formed by two threads.

In one embodiment, the worm comprises a worm body and the drive thread is provided to an outer wall of the worm body.

In one embodiment, the two threads have the same spiral direction and pitch.

In one embodiment, the starting end and the terminating end of the two threads are respectively located at two sides of the worm body, so that the two threads have the same length.

In one embodiment, the worm gear is a helical gear.

In one embodiment, the worm gear is a coaxial dual gear comprising a first bull gear and a first pinion gear coaxially fixed together, the first bull gear meshing with the drive thread of the worm; the gear transmission mechanism further comprises an intermediate gear, and the intermediate gear is meshed with the first pinion and the output gear respectively.

In one embodiment, the gear transmission mechanism further comprises an intermediate gear, the intermediate gear is a coaxial duplicate gear and comprises a second large gear and a second small gear which are coaxially fixed together, the second large gear is meshed with the worm gear, and the second small gear is meshed with the output gear.

In one embodiment, the output gear includes a gear body for engaging with the worm wheel, and an output shaft formed at one end of the gear body, the output shaft protruding from one side of the housing for connection with an external device.

In one embodiment, the output gear is fixedly sleeved to a mounting shaft, and one end of the mounting shaft extends from one end of the gear body far away from the output shaft and is rotatably mounted to the housing.

The worm of the utility model adopts the driving thread formed by two or more than two thread lines, so that the output speed is improved, the cost is saved and the use requirement is met under the condition of not changing the structure, the volume and other components of the driver of the automobile heating, ventilating and air conditioning.

[ description of the drawings ]

Fig. 1 is a schematic structural diagram of a driver for an hvac system of a vehicle according to an embodiment of the present invention;

FIG. 2 is a cross-sectional schematic view of the drive of FIG. 1;

FIGS. 3 and 4 are schematic exploded views of the actuator of FIG. 1;

fig. 5 is a schematic view of the worm of the drive of fig. 1.

[ detailed description ] embodiments

The utility model is further described below with reference to the figures and examples.

Referring to fig. 1 to 4, a driver 100 for an automotive heating, ventilating and air conditioning system according to an embodiment of the present invention includes a housing 10, a motor 20 installed in the housing 10, a gear transmission mechanism driven by the motor 20, and an output gear 40 driven by the gear transmission mechanism.

Housing 10 includes first and

second housing halves

12 and 14 that snap together to facilitate manufacturing and assembly. The motor 20 and the gear train are housed in a space enclosed by the first half-shell 12 and the second half-shell 14.

The gear train includes a worm 32, a worm gear 34 and an intermediate gear 36. The worm 32 is fixedly sleeved on the output end of the rotating shaft 22 of the motor 20 and coaxially rotates along with the rotating shaft 22. The worm wheel 34 includes a first large gear 342 and a first small gear 344 coaxially fixed together, the first large gear 342 and the first small gear 344 are respectively engaged with the worm 32 and the intermediate gear 36, and the intermediate gear 36 is engaged with the output gear 40, so that the kinetic energy of the motor 20 is transferred to the output gear 40, and the speed reduction output is realized. The output gear 40 is used to drive an external device, such as a damper of an automotive heating, ventilating, and air conditioning system, to control the damper.

In this embodiment, the first large gear 342 of the worm wheel 34 is a helical gear, which increases the meshing area and strength of the teeth and improves the transmission force.

Referring to fig. 4 and 5, the worm 32 includes a worm body 322 and a driving thread provided on an outer wall of the worm body 322, the worm body 322 is fixedly sleeved on an output end of the rotating shaft 22 through a through hole 3222 on the worm body, and the driving thread is formed by two

thread lines

324a and 324 b. The drive screw is engaged with the worm wheel 34 to effect driving of the worm wheel 34. The worm 32 adopts a driving thread formed by two

thread lines

324a and 324b, namely a double-thread structure, and under the condition that the structure, the volume and other components of the driver 100 are not changed, the thread pitch of the driving thread is increased, so that the output speed is increased, the cost is saved, and the use requirement is met.

The two

threads

324a, 324b have the same spiral direction and pitch, the

starting ends

3242, 3244 of the two

threads

324a, 324b are symmetrically distributed on both sides of the worm body 322, and the terminating ends are symmetrically distributed on both sides of the worm body 322, so that the two

threads

324a, 324b have the same length. Therefore, the transmission ratio of the actuator 100 of the present invention can be doubled and the output speed can be doubled compared to the conventional actuator.

It will be appreciated that in other embodiments the drive screw may be formed by more than two threads, for example three, four, etc., so that a reduced transmission ratio and increased output speed may be achieved as well.

In this embodiment, the intermediate gear 36 is a coaxial dual gear, and the intermediate gear 36 includes a second large gear 362 and a second small gear 364 that are coaxially fixed together. The output gear 40 includes a gear body 42 and an output shaft 44 formed at one end of the gear body 42, and the gear body 42 and the output shaft 44 are coaxial and rotate in synchronization. The second large gear 362 is engaged with the first small gear 344 of the worm wheel 34, and the second small gear 364 is engaged with the gear body 42 of the output gear 40, thereby realizing further reduction output. An output shaft 44 extends from one side of the second half shell 14 of the housing 10 for connection to an external device, as shown in fig. 1 and 3, to effect driving of the external device.

In this embodiment, the first small gear 344 and the second large gear 362 are both straight gears.

The output gear 40 is fixedly sleeved to a mounting shaft 46, and further includes a mounting shaft 46 formed on the gear body 42 away from the output shaft 44, and one end of the mounting shaft 46 protrudes from one end of the gear body 42 away from the output shaft 44 and is rotatably mounted to the first half shell 12 of the housing 10.

The above examples merely represent preferred embodiments of the present invention, which are described in more detail and detail, but are not to be construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications, such as combinations of different features in various embodiments, may be made without departing from the spirit of the utility model, and these are within the scope of the utility model.

Claims

1. The utility model provides a driver for car heating and ventilating air conditioner, includes the motor, receives motor drive's gear drive and receive gear drive's output gear, the motor includes the pivot, its characterized in that: the gear transmission mechanism comprises a worm fixedly sleeved at the output end of the rotating shaft and a worm wheel meshed with the worm, the worm is provided with a driving thread formed by two or more thread lines, and the driving thread is meshed with the worm wheel to drive the worm wheel.

2. The driver of claim 1, wherein: the drive thread of the worm is a drive thread formed by two thread lines.

3. The driver of claim 2, wherein: the worm includes a worm body and the drive thread provided to an outer wall of the worm body.

4. The driver of claim 3, wherein: the spiral direction and the thread pitch of the two thread lines are the same.

5. The driver of claim 3, wherein: the starting end and the terminating end of the two threads are respectively positioned on two sides of the worm body, so that the two threads are equal in length.

6. The driver according to any one of claims 1 to 5, wherein: the worm wheel is a helical gear.

7. The driver according to any one of claims 1 to 5, wherein: the worm wheel is a coaxial duplicate gear and comprises a first large gear and a first small gear which are coaxially fixed together, and the first large gear is meshed with the driving thread of the worm; the gear transmission mechanism further comprises an intermediate gear, and the intermediate gear is meshed with the first pinion and the output gear respectively.

8. The driver according to any one of claims 1 to 5, wherein: the gear transmission mechanism further comprises an intermediate gear, the intermediate gear is a coaxial duplicate gear and comprises a second large gear and a second small gear which are coaxially fixed together, the second large gear is meshed with the worm gear, and the second small gear is meshed with the output gear.

9. The driver according to any one of claims 1 to 5, wherein: the output gear comprises a gear body and an output shaft formed at one end of the gear body, the gear body is used for being meshed with the worm wheel, and the output shaft extends out of one side of the shell and is used for being connected with external equipment.

10. The driver of claim 9, wherein: the output gear is fixedly sleeved on an installation shaft, and one end of the installation shaft extends out of one end of the gear body, which is far away from the output shaft, and is rotatably installed on the shell.