Double worm and gear driver and automobile driving control system

Abstract

The utility model provides a double-worm-gear driver, which comprises a shell, a worm gear and a worm, the driving motor is arranged in the shell; the first worm transmission assembly is arranged in the shell and comprises a first worm and a first worm gear which are in transmission fit, and the first worm is connected with the output end of the driving motor; the transmission gear is arranged in the shell and is in transmission connection with the first worm gear; the second worm transmission assembly is arranged in the shell and comprises a second worm and a second worm gear which are in transmission fit, and the second worm is in transmission connection with the transmission gear; the output shaft is used for being connected with an external driving load and comprises a transmission end and an output end which are connected, the transmission end is arranged in the shell and connected with the second worm wheel, the output end penetrates through the shell to the outside, the transmission structure layout of the driver is optimized, and operation noise is reduced. The utility model further provides an automobile driving control system comprising the double worm and gear driver.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile intelligent control, and more specifically, to a double worm gear drive and an automobile drive control system comprising the double worm gear drive. Background Art

[0002] With the rapid development of the times, intelligent and electrified products have gradually penetrated into all aspects of people's lives and can be seen everywhere. Among them, new energy vehicles are an important intelligent product.

[0003] With the intelligent reform driven by new energy vehicles, various adjustment devices in the car have bid farewell to the era of manual operation. All commands are adjusted through the large screen of the car computer or voice commands. For example, the air outlet of the air conditioner, the folding table of the seat, the armrest box cover, etc. can all be electrically controlled by the driver.

[0004] Current automotive drivers can achieve electric control of devices, but they have more or less shortcomings such as large size, complex structure, and high noise, and cannot meet the comprehensive needs of users. Utility Model Content

[0005] In light of the above, the present invention aims to address at least one of the technical problems existing in the prior art. To this end, the present invention provides a dual-worm gear drive and an automotive drive control system incorporating the dual-worm gear drive. By providing a two-stage worm gear assembly, the output end of the drive motor is parallel to the output shaft, and the internal components of the drive are arranged along the length. This optimizes the overall shape of the drive, facilitates reduced dimensions in the drive output direction, and reduces operating noise. The overall structure is simple, making it suitable for large-scale industrial production applications.

[0006] To this end, in a first aspect, an embodiment of the present invention provides a double worm gear drive, comprising:

[0007] case;

[0008] a driving motor, disposed in the housing;

[0009] A first worm transmission assembly is disposed in the housing and includes a first worm and a first worm wheel in transmission engagement, wherein the first worm is connected to an output end of the drive motor;

[0010] a transmission gear, disposed in the housing and transmission-connected to the first worm gear;

[0011] A second worm gear transmission assembly is disposed in the housing and includes a second worm gear and a second worm wheel in transmission cooperation, wherein the second worm gear is connected to the transmission gear; and

[0012] The output shaft is used to connect to an external driving load, and includes a connected transmission end and an output end. The transmission end is arranged in the housing and connected to the second worm gear, and the output end passes through the housing to the outside.

[0013] Preferably, the housing is substantially flat, and the drive motor, the first worm transmission assembly, the transmission gear, the second worm transmission assembly and the output shaft are arranged in sequence from a first end of the housing to a second end corresponding to the first end.

[0014] Preferably, the first worm is provided with a first helical tooth portion, the first worm wheel includes a coaxial second helical tooth portion and a first transmission tooth portion, the second helical tooth portion is a second helical tooth portion of the second helical tooth portion that is in transmission cooperation with the first helical tooth portion, the first transmission tooth portion is in transmission cooperation with the transmission gear, and the first transmission tooth portion is set as a straight tooth portion or a helical tooth portion.

[0015] Preferably, the diameter of the second helical tooth portion is greater than the diameter of the first transmission tooth portion.

[0016] Preferably, the transmission gear includes a coaxial second transmission tooth portion and a third transmission tooth portion, the second transmission tooth portion is transmission-connected to the first transmission tooth portion, the third transmission tooth portion is cooperated with the second worm gear, the diameter of the second transmission tooth portion is larger than that of the third transmission tooth portion, the second transmission tooth portion is set to a straight tooth portion or a helical tooth portion, and the third transmission tooth portion is set to a straight tooth portion or a helical tooth portion.

[0017] Preferably, the second worm includes a coaxial fourth transmission tooth portion and a third helical tooth portion, the second worm wheel is provided with a fourth helical tooth portion, the fourth transmission tooth portion is transmission-connected to the transmission gear, the third helical tooth portion is transmission-connected to the fourth helical tooth portion, and the fourth transmission tooth portion is set as a straight tooth portion or a helical tooth portion.

[0018] Preferably, the second worm further includes a rolling bearing, both ends of the rolling bearing are respectively provided with limiting protrusions, the upper and lower side surfaces of the shell are respectively provided with through holes corresponding to the limiting protrusions, and the fourth transmission tooth portion and the third helical tooth portion are sleeved on the rolling bearing.

[0019] Preferably, the transmission gear includes a first transmission gear and a second transmission gear that are transmission-matched, the first transmission gear is transmission-matched with the first worm gear, and the second transmission gear is transmission-matched with the second worm gear.

[0020] Preferably, it further includes an angle sensor, which is arranged in the housing and adjacent to the drive motor.

[0021] In the second aspect, an embodiment of the present invention also provides an automobile drive control system, comprising an electronic control unit, a power supply unit, a drive load and a dual worm gear drive according to the first aspect, wherein the power supply unit supplies power to the drive motor, the output shaft is correspondingly connected to the drive load, and the electronic control unit is capable of receiving control instructions and outputting a PWM drive signal according to the control instructions to drive the dual worm gear drive.

[0022] The double worm gear drive and automobile drive control system provided by the utility model are equipped with a two-stage worm transmission component, a transmission gear is arranged between the two-stage worm transmission components, the output end of the drive motor is parallel to the output shaft, and the internal components of the drive are distributed along the direction from the first end to the second end, so that the overall thickness of the drive is small and the size of the drive output direction is small, and the two-stage worm transmission reduces the operating noise of the drive; the automobile drive control system receives external operation instructions through the ECU, generates a drive signal for the drive, controls the movement of the drive and then drives the movement of the drive load, realizes automatic control of opening, closing, angle control and operation control and other functions, realizes a high degree of intelligence, thereby realizing the intelligence of the automobile and providing users with a good user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the three-dimensional structure of a double worm gear drive provided in an embodiment of the present utility model;

[0024] Figure 2 for Figure 1 Schematic diagram of the three-dimensional structure of the double worm gear drive with the housing opened;

[0025] Figure 3 for Figure 2 Schematic diagram of the three-dimensional structure of the second worm;

[0026] Figure 4 This is a schematic diagram of the framework structure of the automobile drive control system provided by an embodiment of the utility model. DETAILED DESCRIPTION

[0027] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0028] The disclosure below provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides examples of various specific processes and materials, but a person of ordinary skill in the art will appreciate the applicability of other processes and / or the use of other materials.

[0029] The purpose of the present utility model is to provide a dual worm gear drive 100 for use in an automobile, particularly an automobile drive control system 200 in the automobile. The automobile drive control system 200 realizes intelligent automatic control of a driving load 201 in the automobile based on the dual worm gear drive 100.

[0030] Please refer to Figures 1 to 3 The double worm gear drive 100 comprises:

[0031] Housing 10;

[0032] A driving motor 20 is disposed in the housing 10;

[0033] A first worm gear transmission assembly 30 is disposed in the housing 10 and includes a first worm 31 and a first worm wheel 32 for transmission cooperation. The first worm 31 is connected to the output end 21 of the drive motor 20;

[0034] A transmission gear 40 is disposed in the housing 10 and is transmission-connected to the first worm gear 32;

[0035] A second worm gear transmission assembly 50 is disposed in the housing 10 and includes a second worm 51 and a second worm wheel 52 that are in transmission cooperation. The second worm 51 is in transmission connection with the transmission gear 40; and

[0036] The output shaft 60 is used to connect to the external driving load 201, and includes a connected transmission end 61 and an output end 62. The transmission end 61 is arranged in the housing 10 and connected to the second worm gear 52, and the output end 62 passes through the housing 10 to the outside.

[0037] The housing 10 is generally flat, and the drive motor 20, the first worm gear assembly 30, the transmission gear 40, the second worm gear assembly 50 and the output shaft 60 are sequentially arranged from the first end of the housing 10 to the second end corresponding to the first end.

[0038] Specifically, the housing 10 includes an open base 11 and a cover 12 that covers the opening. The housing 10 also includes a generally rectangular main body 13 and a drive mounting portion 14 located at a first end 131 of the main body 13. The drive motor 20 is mounted on the drive mounting portion 14. The main body 13 is provided with the drive motor 20, a first worm gear assembly 30, a transmission gear 40, a second worm gear assembly 50, and an output shaft 60 along its length from the first end 131 to a second end 132 opposite the first end 131. Because the internal components are arranged along the length of the housing, the overall structure of the dual worm gear drive 100 is flattened. The drive motor 20 is arranged at the first end 131 along the width direction of the vertical length direction, the output end 21 of the drive motor 20 is located at the main body 13, and the limit 22 end of the drive motor 20 relative to the output end 21 is set on the drive mounting part 14, and the first worm gear 32, the transmission gear 40, and the second worm 51 are respectively configured to adapt to the flat shape of the housing 10, and are respectively rotated and limited to fit the upper and lower side surfaces of the housing 10, so that the space occupied by the drive motor 20 in the main body 13 of the housing 10 is reduced, and the structural layout of the dual worm gear drive 100 is further optimized.

[0039] Furthermore, the first worm 31 is provided with a first helical tooth portion 311, and the first worm wheel 32 includes a coaxial second helical tooth portion 321 and a first transmission tooth portion (not shown). The second helical tooth portion 321 is in transmission cooperation with the first helical tooth portion 311, and the first transmission tooth portion 321 is in transmission cooperation with the transmission gear 40. In this embodiment, by providing the coaxial second helical tooth portion 321 and the first transmission tooth portion in the first worm transmission assembly 30, the worm drive is converted into circular motion in an orthogonal direction, thereby achieving a change in the drive direction. It is understood that the first transmission tooth portion can be configured as a straight tooth portion or a helical tooth portion, corresponding to the transmission cooperation of the transmission gear.

[0040] Furthermore, the output shaft 60 is parallel to the output end 21 of the drive motor 20. In this embodiment, the dual worm gear drive 100 reduces the transmission mechanism space while maintaining the original drive output direction. It will be appreciated that in other embodiments, the output shaft 60 and the output end 21 may be oriented at other angles, such as perpendicular or oblique.

[0041] Furthermore, the diameter of the second helical tooth portion 321 is greater than the diameter of the first transmission tooth portion. In this embodiment, the first worm gear 32 achieves transmission speed reduction.

[0042] Furthermore, the transmission gear 40 includes a coaxial second transmission tooth portion 41 and a third transmission tooth portion 42. The second transmission tooth portion 41 is in transmission connection with the first transmission tooth portion, and the third transmission tooth portion 42 is in transmission engagement with the second worm 51. The diameter of the second transmission tooth portion 41 is larger than that of the third transmission tooth portion 42. In this embodiment, the transmission gear 40 further improves the transmission reduction rate. It is understood that the second transmission tooth portion 41 can be configured as a straight tooth portion or a helical tooth portion, and the third transmission tooth portion 42 can also be configured as a straight tooth portion or a helical tooth portion, with transmission achieved through straight or helical teeth.

[0043] Furthermore, the second worm 51 includes a coaxial fourth transmission tooth portion 511 and a third helical tooth portion 512. The second worm wheel 52 is provided with a fourth helical tooth portion 521. The fourth transmission tooth portion 511 is transmission-connected to the transmission gear 40, and the third helical tooth portion 512 is transmission-connected to the fourth helical tooth portion 521. In this embodiment, the second worm 51 and the second worm wheel 52 redirect the direct drive, restoring the drive output direction of the dual worm gear drive 100 to the initial drive direction of the drive motor 20. This optimizes the overall structural layout of the dual worm gear drive 100, reduces drive speed, maintains the original drive direction, and reduces transmission noise. It is understood that the fourth transmission tooth portion 511 can be configured as a straight tooth portion or a helical tooth portion to achieve transmission.

[0044] Furthermore, the second worm 51 also includes a rolling bearing 513, and both ends of the rolling bearing 513 are respectively provided with limiting protrusions 514, and the upper and lower side surfaces of the shell 10 are respectively provided with through holes 15 corresponding to the limiting protrusions 514, and the fourth transmission tooth portion 511 and the third bevel tooth portion 512 are respectively sleeved on the rolling bearing 513.

[0045] Furthermore, the transmission gear 40 includes a first transmission gear 40 and a second transmission gear 40', which are in transmission engagement with each other. The first transmission gear 40 is in transmission engagement with the first worm gear 32, and the second transmission gear 40' is in transmission engagement with the second worm 51. In this embodiment, the number of transmission gears 40 is set to two, which can further improve the transmission reduction rate. It is understood that the number of transmission gears 40 can be increased or decreased as needed.

[0046] Furthermore, an angle sensor 70 is included, which is disposed within the housing 10 and adjacent to the drive motor 20. Specifically, the angle sensor 70 is disposed on the drive mounting portion 14 and is specifically connected to the limit end 22 of the drive motor 20. It can detect the rotation angle data of the drive shaft of the drive motor 20 in real time. The rotation angle is transmitted in real time to the electronic control unit ECU of the vehicle drive control system 200. The electronic control unit ECU can generate control instructions according to the rotation angle data to achieve feedback control of the drive motor 20.

[0047] Please refer to Figure 4 In the second aspect, an embodiment of the present invention further provides an automobile drive control system 200, comprising an electronic control unit ECU, a power supply unit 202, a drive load 201 and the dual worm gear drive 100 according to the first aspect, wherein the power supply unit 202 supplies power to a drive motor 20 connected to the dual worm gear drive 100, and the output shaft 60 of the dual worm gear drive 100 is correspondingly connected to the drive load 201, and the electronic control unit ECU is capable of receiving control instructions and outputting a PWM drive signal according to the control instructions to drive the dual worm gear drive 100.

[0048] The double worm gear drive 100 and automobile drive control system 200 provided by the present invention are provided with a two-stage worm transmission component, a transmission gear 40 is provided between the two-stage worm transmission components, the output end 21 of the drive motor 20 is parallel to the output shaft 60, and the internal components of the double worm gear drive 100 are distributed along the direction from the first end 131 to the second end 132, so that the overall thickness of the double worm gear drive 100 is small and the size in the drive output direction is small, and the two-stage worm transmission reduces the operating noise of the double worm gear drive 100; the automobile drive control system receives external operation instructions through the electronic control unit ECU, generates a drive signal for the double worm gear drive 100, controls the movement of the double worm gear drive 100 and then drives the drive load 201 to move, realizes automatic control of opening, closing, angle control and operation control and other functions, realizes a high degree of intelligence, thereby realizing the intelligence of the automobile and providing users with a good user experience.

[0049] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0050] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A double worm gear drive, characterized in that: include: case; a driving motor, disposed in the housing; A first worm transmission assembly is disposed in the housing and includes a first worm and a first worm wheel in transmission engagement, wherein the first worm is connected to an output end of the drive motor; a transmission gear, disposed in the housing and transmission-connected to the first worm gear; A second worm gear transmission assembly is disposed in the housing and includes a second worm gear and a second worm wheel in transmission cooperation, wherein the second worm gear is connected to the transmission gear; and The output shaft is used to connect to an external driving load, and includes a connected transmission end and an output end. The transmission end is arranged in the housing and connected to the second worm gear, and the output end passes through the housing to the outside.

2. The double worm gear drive according to claim 1, characterized in that The housing is substantially flat, and the drive motor, the first worm transmission assembly, the transmission gear, the second worm transmission assembly, and the output shaft are sequentially arranged from a first end of the housing to a second end corresponding to the first end.

3. The double worm gear drive according to claim 2, characterized in that The first worm is provided with a first helical tooth portion, the first worm wheel includes a coaxial second helical tooth portion and a first transmission tooth portion, the second helical tooth portion is in transmission cooperation with the first helical tooth portion, the first transmission tooth portion is in transmission cooperation with the transmission gear, and the first transmission tooth portion is set as a straight tooth portion or a helical tooth portion.

4. The double worm gear drive according to claim 3, characterized in that The diameter of the second helical tooth portion is greater than the diameter of the first transmission tooth portion.

5. The double worm gear drive according to claim 3, characterized in that The transmission gear includes a coaxial second transmission tooth portion and a third transmission tooth portion, the second transmission tooth portion is transmission-connected to the first transmission tooth portion, the third transmission tooth portion is transmission-coordinated with the second worm gear, the second transmission tooth portion is configured as a straight tooth portion or a helical tooth portion, and the third transmission tooth portion is configured as a straight tooth portion or a helical tooth portion.

6. The double worm gear drive according to claim 2, characterized in that The second worm includes a coaxial fourth transmission tooth portion and a third helical tooth portion. The second worm wheel is provided with a fourth helical tooth portion. The fourth transmission tooth portion is transmission-connected to the transmission gear. The third helical tooth portion is transmission-connected to the fourth helical tooth portion. The fourth transmission tooth portion is configured as a straight tooth portion or a helical tooth portion.

7. The double worm gear drive according to claim 6, characterized in that The second worm further includes a rolling bearing, both ends of which are provided with limiting protrusions, the upper and lower side surfaces of the housing are respectively provided with through holes corresponding to the limiting protrusions, and the fourth transmission tooth portion and the third helical tooth portion are sleeved on the rolling bearing.

8. The double worm gear drive according to claim 2, characterized in that The transmission gear includes a first transmission gear and a second transmission gear that are transmission-matched. The first transmission gear is transmission-matched with the first worm gear, and the second transmission gear is transmission-matched with the second worm gear.

9. The double worm gear drive according to claim 8, characterized in that The invention also includes an angle sensor which is arranged in the housing and adjacent to the driving motor.

10. An automobile driving control system, characterized in that: It includes an electronic control unit, a power supply unit, a driving load and a dual worm gear drive according to any one of claims 1 to 9, wherein the power supply unit supplies power to the driving motor, the output shaft is correspondingly connected to the driving load, and the electronic control unit is capable of receiving control instructions and outputting a PWM driving signal according to the control instructions to drive the dual worm gear drive.

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