CN219960304U

CN219960304U - Motor driving device for improving torque and automobile electric tail gate stay bar system

Info

Publication number: CN219960304U
Application number: CN202320953352.3U
Authority: CN
Inventors: 李冰晶; 杜方瑞; 金琦峰
Original assignee: Shanghai Chizhu Auto Parts Co ltd
Current assignee: Shanghai Chizhu Auto Parts Co ltd
Priority date: 2023-04-25
Filing date: 2023-04-25
Publication date: 2023-11-03
Anticipated expiration: 2033-04-25

Abstract

The utility model provides a motor driving device for lifting torque and an automobile electric tail gate stay bar system, wherein the motor driving device for lifting torque comprises: the motor device is used for providing power for the movement of the electric tail gate stay bar of the automobile; the reduction box is driven by a motor output shaft of the motor device; the damping device is used for increasing load on a motor output shaft of the motor device and reducing the rotating speed of the motor output shaft, and is arranged inside the motor device, or is arranged inside the reduction gearbox, or is arranged at the joint of the motor device and the reduction gearbox. According to the motor driving device for lifting torque, the damping device is additionally arranged at the tail end of the motor output shaft, so that the motor load is increased, and the torque is amplified through the reduction gearbox, so that the purposes of reducing the fixed end of the stay bar assembly, optimizing the structure and optimizing the cost are achieved.

Description

Motor driving device for improving torque and automobile electric tail gate stay bar system

Technical Field

The utility model relates to the technical field of automobile accessories, in particular to a motor driving device for improving torque and an automobile electric tail gate stay bar system.

Background

The tail gate stay is an important component for opening and closing the tail gate of an automobile. The traditional automobile tail door is generally provided with a gas spring or a hydraulic spring, the tail door is supported by the energy storage effect of compressed gas or hydraulic oil, the tail door needs to be opened and closed manually, and once the gas spring or the hydraulic spring leaks, the problem of support failure can be caused. Along with the gradual development of automobiles towards the intelligent and humanized directions, more and more middle-high-grade automobiles all use electric supporting rods to realize automatic control of the tail doors, namely, the automatic opening and closing of the tail doors of the automobiles are realized by controlling the opening and the retraction of the supporting rods through a motor.

At present, some electric stay bars adopt a structural mode that a screw rod is directly connected with a driving motor, the driving motor provides a power source, and the screw rod converts the rotation motion of the motor into the axial telescopic motion of the stay bar. Chinese patent publication No. CN 211287202U discloses a brake device for electric tail gate stay of automobile, the device includes adapter, wave spring, supporting pad and the regulating seat that are connected in turn, the adapter is equipped with first adapter, the other end is equipped with the spline, the adapter extends there is the brake post, the outer peripheral face of brake post is located to the wave spring cover, first slot has been seted up to the adapter, the supporting pad cover is located the outer peripheral face of brake post and is equipped with the second adapter, the brake post is equipped with the second slot, the spline groove has been seted up to the adapter, the screw groove has been seted up to the brake post, the regulating seat is equipped with the double-screw bolt, the through-hole has been seted up to the double-screw bolt, the adapter is connected with motor assembly through the spline, the adapter is connected with the lead screw through spline groove, the brake passes through grafting and threaded connection. In order to increase the internal resistance of the support rod, the brake device disclosed in the patent is complex in design structure and occupies a large space.

In addition, the motor in some electric supporting rods adopts a conventional gear reducer, and the conventional motor reduction box assembly cannot manufacture products with high torque values, so that the additional value is low and the use is limited.

Disclosure of Invention

In view of the above, the present utility model is directed to a motor driving device for improving torque and an electric tail gate strut system for an automobile, so as to solve at least one of the above technical problems.

In order to achieve the above purpose, the technical scheme of the utility model is realized as follows:

a motor drive for boosting torque, comprising:

the motor device is used for providing power for the movement of the electric tail gate stay bar of the automobile;

the reduction box is driven by a motor output shaft of the motor device;

the damping device is used for increasing load on a motor output shaft of the motor device and reducing the rotating speed of the motor output shaft, and is arranged inside the motor device, or is arranged inside the reduction gearbox, or is arranged at the joint of the motor device and the reduction gearbox.

Further, the damping device is arranged at the end part of the output end of the motor device, and the output shaft of the motor extends out of the damping device and is connected with a transmission structure in the reduction gearbox in a meshed mode.

Further, the damping device comprises a transmission gear and a wave spring, wherein the transmission gear is connected with the motor output shaft into a whole, and the wave spring can increase the load of the transmission gear during rotation under the compression state through pressure.

Further, the damping device further comprises a transmission gear ring, the transmission gear ring is connected with the transmission gear into a whole, the wave spring is sleeved on the outer side of the transmission gear, and the wave spring can be applied to the transmission gear ring through pressure under the pressed state.

Further, the transmission gear is in interference fit with the motor output shaft, and the transmission gear is connected with the transmission gear ring through a spline.

Further, a first pressing piece is arranged between the wave spring and the transmission gear ring.

Further, a first friction plate is arranged between the first pressing plate and the transmission gear ring.

Further, a second friction plate, a second pressing plate and a top cover are sequentially arranged on one side, far away from the first friction plate, of the transmission gear ring, and the top cover is used for pressing the second pressing plate, the second friction plate, the transmission gear ring, the first friction plate, the first pressing plate and the wave spring to a shell structure of the motor device.

Further, the top cover and the end cover of the motor device are fixed through locking screws.

Compared with the prior art, the motor driving device for lifting torque has the following advantages:

(1) According to the motor driving device for lifting torque, the damping device is additionally arranged at the tail end of the motor output shaft, so that the motor load is increased, and the torque is amplified through the reduction gearbox, so that the purposes of reducing the fixed end of the stay bar assembly, optimizing the structure and optimizing the cost are achieved.

(2) According to the motor driving device for lifting the torque, the structural space of the output end of the motor device is reasonably utilized, the overall size of the driving device is reduced, and the applicability of the motor driving device for lifting the torque is improved.

The utility model further provides an automobile electric tail gate stay bar system, which comprises the motor driving device for lifting torque, and the motor driving device drives a screw rod arranged at the rear end of a reduction gearbox to drive an automobile electric tail gate to be opened and closed electrically.

According to the automobile electric tail door stay bar system, through the damping device formed by adding the structures such as the wave spring, the pressing sheet and the friction plate at the tail end of the output shaft of the motor assembly, the motor load is increased, the torque is amplified through the reduction gearbox, the fixed end of the stay bar assembly is reduced, the structure is optimized, the cost is reduced, and the automobile electric tail door stay bar system can be suitable for tail doors with different weights of different automobile systems.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

fig. 1 is a schematic right-side view of a motor driving device for lifting torque according to an embodiment of the present utility model;

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

FIG. 3 is a schematic view of the part B of FIG. 2 in an enlarged partial structure;

FIG. 4 is a schematic view of an exploded view of a damper assembly according to an embodiment of the present utility model assembled with a motor assembly;

reference numerals illustrate:

100-driving means; 1-a motor device; 101-a motor output shaft; 2-a reduction gearbox; 3-a damping device; 4-a transmission gear; 5-wave springs; 6-a first tabletting; 7-a first friction plate; 8-a transmission gear ring; 9-a second friction plate; 10-second tabletting; 11-top cover; 1101-pass-through hole; 12-sun gear; 13-locking screw.

Detailed Description

In order to facilitate understanding of the technical means, objects and effects of the present utility model, embodiments of the present utility model will be described in detail with reference to the accompanying drawings.

It is to be noted that all terms used for directional and positional indication in the present utility model, such as: "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", "top", "low", "lateral", "longitudinal", "center", etc. are merely used to explain the relative positional relationship, connection, etc. between the components in a particular state (as shown in the drawings), and are merely for convenience of description of the present utility model, and do not require that the present utility model must be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model. Furthermore, the description of "first," "second," etc. in this disclosure 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.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be a mechanical connection; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

As shown in fig. 1 to 4, the present utility model discloses a motor driving device for lifting torque, comprising:

the motor device 1 is used for providing power for the movement of the electric tail gate stay bar of the automobile;

a reduction gearbox 2 driven by a motor output shaft 101 of the motor device 1;

and the damping device 3 is used for increasing the load of the motor output shaft 101 of the motor device 1 and reducing the rotating speed of the motor output shaft 101, and the damping device 3 is arranged inside the motor device 1, or the damping device 3 is arranged inside the reduction gearbox 2, or the damping device 3 is arranged at the joint of the motor device 1 and the reduction gearbox 2.

The motor driving device for lifting torque disclosed by the utility model comprises a motor device 1 and a reduction gearbox 2, wherein the damping device 3 is arranged at the tail end of a motor output shaft 101 of the motor device 1, the damping device 3 can be arranged in one end of the motor device 1 close to the reduction gearbox 2 or in one end of the reduction gearbox 2 close to the motor device 1, or the damping device 3 is arranged at the joint of the motor device 1 and the reduction gearbox 2, the load of the motor output shaft 101 of the motor device 1 is increased through the damping device 3, the rotating speed of the motor output shaft 101 is reduced, the output torque of the motor output shaft 101 is increased, and the output torque of the motor device 1 is amplified through the reduction gearbox 2 connected with the motor output shaft 101, so that the reliability of driving application of the motor driving device for lifting torque in a high-torque value product is ensured.

According to the motor driving device for lifting torque, disclosed by the utility model, the motor load is increased through the damping device 3 additionally arranged at the tail end of the motor output shaft 101, and the torque is amplified through the reduction gearbox 2, so that the purposes of reducing the fixed end of the stay bar assembly, optimizing the structure and optimizing the cost are achieved.

As a preferred example of the present utility model, the damping device 3 is disposed at an end of the output end of the motor device 1, and the motor output shaft 101 extends out of the damping device 3 and is engaged with a transmission structure inside the reduction gearbox 2.

The arrangement will utilize the structural space of the motor device output, reduce the overall size of the drive device 100, and promote the applicability of the motor drive device for torque promotion according to the present utility model.

As a preferred example of the present utility model, the damping device 3 includes a transmission gear 4 and a wave spring 5, the transmission gear 4 is integrally connected with the motor output shaft 101, and the wave spring 5 can increase the load of the transmission gear 4 when rotating by pressure in a pressurized state, so that the transmission gear 4 generates torque when rotating.

Preferably, the damping device 3 further includes a driving gear ring 8, the driving gear ring 8 is integrally connected with the driving gear 4, the wave spring 5 is sleeved on the outer side of the driving gear 4, the wave spring 5 can be applied to the driving gear ring 8 under a pressed state by pressure, and the wave spring 5 applies force to the driving gear ring 8 by forward pressure, so that torque is generated when the driving gear 4 and the driving gear ring 8 integrally rotate along with the motor output shaft 101.

The arrangement discloses a damping device 3 structure, through setting up with the integrative pivoted drive gear 4 of motor output shaft 101, transmission ring gear 8 structure, wave spring 5 is in the pressure-bearing state, the forward pressure that wave spring 5 received transmits to transmission ring gear 8, has increased motor output shaft 101's load, realizes promoting motor output shaft 101 output torque's purpose.

The damping device 3 structure of the utility model further optimizes the structure of the driving device 100, improves the utilization rate of the internal space of the motor device 1, and further improves the reliability of the driving device for improving the torque in the application of high-torque products.

As a preferred example of the present utility model, the transmission gear 4 is in interference fit with the motor output shaft 101, and the transmission gear 4 is in spline connection with the transmission gear ring 8.

This arrangement further improves the ease of installation and reliability of use of the damping device 3.

As a preferred example of the present utility model, a first presser 6 is provided between the wave spring 5 and the transmission ring gear 8.

This arrangement further improves the reliability of the forward pressure transmission of the wave spring 5 to the drive ring gear 8 to increase the load of the motor output shaft 101.

As a preferred example of the present utility model, a first friction plate 7 is provided between the first pressing plate 6 and the transmission ring gear 8.

This arrangement further improves the reliability of the load applied to the motor output shaft 101 by the damping device 3 to increase the output torque thereof, and ensures the rotational reliability of the motor output shaft 101.

As a preferred example of the present utility model, a second friction plate 9, a second pressing plate 10 and a top cover 11 are sequentially arranged on one side of the transmission gear ring 8 away from the first friction plate 7, and the top cover 11 presses the second pressing plate 10, the second friction plate 9, the transmission gear ring 8, the first friction plate 7, the first pressing plate 6 and the wave spring 5 to the shell structure of the motor device 1.

As an example of the present utility model, the top cover 11 may be an end cover of the motor device 1 or a limit cover of the damping device 3, and when the top cover 11 is the limit cover of the damping device 3, the wave spring 5 is pressed against the end cover of the motor device 1, and the top cover 11 and the end cover of the motor device 1 are fixed by a locking screw 13.

As an example of the present utility model, a sun gear 12 is provided on the motor output shaft 101, and the sun gear 12 is used for driving a speed reduction mechanism in the reduction gearbox 2 to move. Preferably, the sun gear 12 is in an interference fit with the motor output shaft 101.

As a preferred example of the present utility model, a through hole 1101 is provided at the center of the top cover 11. The through hole 1101 is used for avoiding the motor output shaft 101, or the through hole 1101 is used for avoiding the motor output shaft 101 and the sun gear 12.

In the motor driving device for lifting torque, when the damping device 3 is assembled, the transmission gear 4 is firstly installed on the motor output shaft 101 of the motor device 1, then the sun gear 12 is assembled or finally the sun gear 12 is assembled, the transmission gear 4, the sun gear 12 and the motor output shaft 101 are in interference fit, then the wave spring 5, the first pressing piece 6, the first friction piece 7, the transmission gear ring 8, the second friction piece 9 and the second pressing piece 10 are assembled in sequence, and finally the top cover 11 is pressed and assembled, so that the wave spring 5 generates pressure, the top cover 11 and the end cover of the motor device 1 are locked and fixed through the two locking screws 13, and the sun gear 12 at least partially stretches out of the top cover 11. When the motor device is used, when the motor output shaft 101 of the motor device 1 actively rotates or passively rotates, the transmission gear 4 can be driven to rotate, because the transmission gear 4 and the transmission gear ring 8 are combined into a whole through a spline, the forward pressure generated by the wave spring 5 applies a damping force for generating torque to the transmission gear ring 8 through the first pressing sheet 6 and the first friction sheet 7, the transmission gear 4 drives the transmission gear ring 8 to overcome the torque rotation, the load of the motor output shaft 101 is increased, and finally, the reduction structure meshed with the reduction gearbox 2 is driven to rotate through the sun gear 12 on the motor output shaft 101, the output torque is amplified, and the driving of a high-torque-demand product is realized.

The motor driving device for lifting torque is used for an automobile electric tail gate stay bar system. The motor driving device for lifting torque in the embodiment is applied to the automobile electric tail gate support rod system to drive the screw rod arranged at the rear end of the reduction gearbox 2 to drive the automobile electric tail gate to open and close electrically.

The structure of the automobile electric tail gate stay bar system is optimized, the arrangement of parts is reduced, the space occupied by a driving system in the automobile electric tail gate stay bar system is reduced, the production cost is greatly reduced, and the automobile electric tail gate stay bar system is applicable to tail gates with different weights of different automobile systems.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims

1. A motor drive apparatus for boosting torque, comprising:

the motor device (1) is used for providing power for the movement of the electric tail gate stay bar of the automobile;

a reduction gearbox (2) driven by a motor output shaft (101) of the motor device (1);

damping device (3) for increase the load to motor output shaft (101) of motor device (1), reduce motor output shaft (101)'s rotational speed, damping device (3) set up inside motor device (1), perhaps, damping device (3) set up inside reducing gear box (2), perhaps, damping device (3) set up motor device (1) with the junction of reducing gear box (2).

2. The motor driving device for lifting torque according to claim 1, wherein the damping device (3) is arranged at the end part of the output end of the motor device (1), and the motor output shaft (101) extends out of the damping device (3) and is in meshed connection with a transmission structure inside the reduction gearbox (2).

3. Motor drive for lifting torque according to claim 2, characterized in that the damping device (3) comprises a transmission gear (4) and a wave spring (5), the transmission gear (4) being connected with the motor output shaft (101) in one piece, the wave spring (5) being capable of increasing the load when the transmission gear (4) rotates by pressure in a pressurized state.

4. A motor drive for lifting torque according to claim 3, characterized in that the damping device (3) further comprises a transmission gear ring (8), the transmission gear ring (8) being integrally connected with the transmission gear (4), the wave spring (5) being sleeved outside the transmission gear (4), the wave spring (5) being capable of being applied to the transmission gear ring (8) by pressure in a compressed state.

5. The torque-boosting motor drive according to claim 4, characterized in that the transmission gear (4) is interference-fitted with the motor output shaft (101), the transmission gear (4) being splined with the transmission ring gear (8).

6. Motor drive for lifting torque according to claim 4 or 5, characterized in that a first presser plate (6) is arranged between the wave spring (5) and the transmission ring gear (8).

7. A torque-boosting motor drive according to claim 6, characterized in that a first friction plate (7) is provided between the first presser plate (6) and the transmission ring gear (8).

8. The motor driving device for lifting torque according to claim 7, wherein a second friction plate (9), a second pressing plate (10) and a top cover (11) are sequentially arranged on one side of the transmission gear ring (8) away from the first friction plate (7), and the top cover (11) is used for pressing the second pressing plate (10), the second friction plate (9), the transmission gear ring (8), the first friction plate (7), the first pressing plate (6) and the wave spring (5) to a shell structure of the motor device (1).

9. The torque-boosting motor drive according to claim 8, characterized in that the top cover (11) is fixed with an end cap of the motor device (1) by means of a locking screw (13).

10. An automobile electric tail gate stay bar system, characterized by comprising the motor driving device for lifting torque according to any one of claims 1-9, and driving a screw rod arranged at the rear end of a reduction gearbox (2) to drive an automobile electric tail gate to be opened and closed electrically.