CN217518472U - Combined driving mechanism and trackless sliding door using same - Google Patents

Abstract

The utility model relates to a combined type actuating mechanism and use this actuating mechanism's trackless slip door, actuating mechanism is including power pack, one-level speed reduction unit, drive unit, second grade speed reduction unit and the output shaft that is used for providing power, power pack includes the motor, drive unit includes the center pin, the fixed eccentric shaft that is equipped with on the center pin, second grade speed reduction unit includes interior fluted disc and external fluted disc, the power shaft of motor connect in one-level speed reduction unit, one-level speed reduction unit connect in the center pin, the eccentric shaft is located to external fluted disc cover, output shaft in external fluted disc, power pack can drive one-level speed reduction unit and rotate, one-level speed reduction unit drives the center pin rotates, the center pin passes through the external fluted disc drives the output shaft rotates. The driving mechanism can output large torque, can realize large reduction ratio, and can be applied to occasions such as vehicle doors, seats and the like.

Description

Combined driving mechanism and trackless sliding door using same

Technical Field

The application relates to a driving mechanism, in particular to a combined type driving mechanism with a two-stage speed reduction function and a trackless sliding door using the same.

Background

Traditional car door all is manual to be opened or closed, along with people to the more and more high of car automation requirement, has appeared a lot of cars that can realize electronic opening and close the door function in the market, and the door that slides is applied to in commercial car widely, need design the guide rail to accomplish the function that the door slided in the door that slides at present, therefore the structure is more complicated and installation space is great.

In view of this, the present invention is especially provided.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects, the application provides a composite driving mechanism, and a two-stage speed reduction unit is arranged in the driving mechanism, so that a larger speed reduction ratio and a larger torque output can be realized, and the composite driving mechanism can be applied to a trackless sliding door.

The technical scheme adopted by the application for solving the technical problem is as follows:

a composite driving mechanism comprises a power unit for providing power, a primary speed reducing unit, a transmission unit, a secondary speed reducing unit and an output shaft, the power unit comprises a motor, the transmission unit comprises a central shaft, an eccentric shaft eccentrically arranged with the central shaft is fixedly arranged on the central shaft, the secondary speed reduction unit comprises an inner fluted disc and an outer fluted disc arranged in the inner fluted disc, the number of teeth on the outer fluted disc is not equal to that on the inner fluted disc, a power shaft of the motor is connected with the first-stage speed reducing unit, the primary speed reducing unit is connected with the central shaft, the outer fluted disc is sleeved on the eccentric shaft, the output shaft is connected with the external fluted disc, the power unit can drive the primary speed reduction unit to rotate, the first-stage speed reduction unit drives the central shaft to rotate, and the central shaft drives the output shaft to rotate through the outer fluted disc.

Preferably, the primary speed reduction unit comprises a worm and a worm wheel in meshed connection with the worm, the power shaft is positioned and connected to the worm, and the central shaft is connected to the worm wheel.

Preferably, the primary speed reduction unit comprises a bevel gear and a big gear plate in meshed connection with the bevel gear, the power shaft is connected to the bevel gear in a positioning manner, and the central shaft 30 is connected to the big gear plate.

Preferably, the central shaft and the eccentric shaft are both cylindrical structures, the diameter of the eccentric shaft is smaller than that of the central shaft, central holes are formed in the central shaft and the eccentric shaft along the axial direction, the central holes and the central shaft are coaxially arranged, the eccentric shaft and the central holes are eccentrically arranged, and a plurality of convex ribs are formed on the outer surface of the central shaft in a radially outward extending manner.

Preferably, the central shaft is provided with a plurality of weight ports along the axial direction, and the weight ports are arranged around the periphery of the central hole.

Preferably, the first end surface of the outer toothed disc extends along the axial direction to form a plurality of protruding columns, the first end surface of the output shaft is engaged with the protruding columns, and one or two outer toothed discs are arranged in the inner toothed disc.

Preferably, the first end surface of the output shaft extends along the axial direction to form a center post, the center post and the output shaft are coaxially arranged, and the center post extends into the center hole.

Preferably, the eccentric shaft and the central shaft are both mounted on the mounting bracket through bearings, a bearing is mounted between the eccentric shaft and the outer fluted disc, and the inner fluted disc is fixedly mounted on the mounting bracket.

Preferably, the motor is a brush motor or a brushless motor.

The application also provides a trackless sliding door, install above-mentioned combined type actuating mechanism on the sliding door, output shaft among the combined type actuating mechanism pass through four-bar linkage connect in the sliding door.

The beneficial effect of this application is: the two-stage speed reduction unit is arranged in the application, the motor is connected with the one-stage speed reduction unit, the one-stage speed reduction unit is connected with the second-stage speed reduction unit through the central shaft, the second-stage speed reduction unit is connected with the output shaft, the one-stage speed reduction unit is a worm and gear combination or a bevel gear combination, when the bevel gear combination is used, a power shaft of the bevel gear fixedly connected motor is arranged, the mechanism of the driving mechanism is simpler and more compact, the size is smaller, the production cost is lower, the second-stage speed reduction unit is an outer fluted disc and an inner fluted disc, the outer fluted disc and the inner fluted disc form a small tooth difference assembly, the outer fluted disc is sleeved on an eccentric shaft of the central shaft, the output shaft is clamped on the outer fluted disc, the central shaft can drive the outer fluted disc to generate eccentric vibration in the inner fluted disc, therefore, the motor rotating at a high speed in the application sequentially outputs an output shaft with a lower rotating speed after the speed reduction by the one-stage speed reduction unit and the second-stage speed reduction unit, and the output shaft is connected with an external mechanism, the driving mechanism can output large torque, can realize large reduction ratio, and can be applied to occasions such as vehicle doors, seats and the like.

Drawings

FIG. 1 is a schematic structural diagram of example 1 of the present application;

FIG. 2 is a second schematic structural diagram of embodiment 1 of the present application;

fig. 3 is a third structural schematic diagram of embodiment 1 in the present application;

FIG. 4 is a cross-sectional view taken along A-A of FIG. 3;

FIG. 5 is a fourth schematic structural view of embodiment 1 of the present application;

FIG. 6 is a cross-sectional view taken along line B-B of FIG. 5;

FIG. 7 is a schematic view of a central shaft according to the present application;

FIG. 8 is a second schematic structural view of the central shaft of the present application;

FIG. 9 is a cross-sectional view of a central shaft of the present application;

FIG. 10 is a fifth schematic structural view of example 1 of the present application;

FIG. 11 is a cross-sectional view taken along line C-C of FIG. 10;

FIG. 12 is a cross-sectional view taken along line D-D of FIG. 10;

FIG. 13 is a cross-sectional view taken along line E-E of FIG. 10;

FIG. 14 is a cross-sectional view taken along F-F of FIG. 10;

FIG. 15 is one of the output shaft configurations of the present application;

FIG. 16 shows a second output shaft configuration of the present application;

FIG. 17 shows a third output shaft configuration of the present application;

FIG. 18 is a fourth output shaft configuration of the present application;

FIG. 19 is a schematic view of the structure of embodiment 2 of the present application;

FIG. 20 is a second schematic structural view of example 2 of the present application;

FIG. 21 is a third schematic structural diagram of embodiment 2 of the present application;

FIG. 22 is a cross-sectional view taken along line G-G of FIG. 21;

FIG. 23 is a fourth illustration of the structure of the embodiment 2 of the present application;

FIG. 24 is a cross-sectional view taken along line H-H of FIG. 23;

FIG. 25 is a schematic view of the present application connecting four links;

in the figure: 10-power unit, 11-motor, 12-power shaft, 20-primary speed reduction unit, 21-worm, 22-worm wheel, 23-bevel gear, 24-big fluted disc, 30-central shaft, 31-convex rib, 32-central hole, 33-counterweight hole, 34-eccentric shaft, 40-secondary speed reduction unit, 41-external fluted disc, 42-convex column, 43-internal fluted disc, 44-bearing, 50-output shaft, 51-central column, 60-mounting bracket and 70-four-bar linkage mechanism.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the following drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

As shown in fig. 1 to 25, a composite driving mechanism includes a power unit 10 for providing power, a first-stage reduction unit 20, a transmission unit, a second-stage reduction unit 40 and an output shaft 50, where the power unit 10 includes a motor 11, the transmission unit includes a central shaft 30, an eccentric shaft 34 eccentrically disposed with the central shaft is fixedly disposed on the central shaft 30, the second-stage reduction unit 40 includes an inner toothed disc 43 and an outer toothed disc 41 disposed in the inner toothed disc 43, the number of teeth on the outer toothed disc 41 is not equal to the number of teeth on the inner toothed disc 43, a power shaft 12 of the motor 11 is connected to the first-stage reduction unit 20, the first-stage reduction unit 20 is connected to the central shaft 30, the outer toothed disc 41 is sleeved on the eccentric shaft 34, the output shaft 50 is connected to the outer toothed disc 41, and the power unit can drive the first-stage reduction unit 20 to rotate, the first-stage reduction unit 20 drives the central shaft 30 to rotate, and the central shaft 30 drives the output shaft 50 to rotate through the external gear disc 41. In the present application, a two-stage speed reduction unit is provided to obtain a larger speed reduction ratio, the motor 11 is connected to a first-stage speed reduction unit 20, the first-stage speed reduction unit can be a worm gear combination or a bevel gear combination, which is described in detail below, the first-stage speed reduction unit is connected to a central shaft 30, the central shaft 30 is provided with an eccentric shaft 34, a second-stage speed reduction unit 40 is connected to the eccentric shaft 34, and an output shaft 50 is connected to a second-stage speed reduction unit 40, as shown in fig. 12, the second-stage speed reduction unit 40 is a small teeth difference component formed by an outer toothed disc and an inner toothed disc, the outer toothed disc is selected to have 1 or 2 teeth less than the inner toothed disc as required, in the present embodiment, the inner toothed disc 43 is fixed, therefore, in the present application, the motor 11 rotating at a high speed sequentially passes through the first-stage speed reduction unit 20 and the second-stage speed reduction unit 40 to reduce the output shaft 50 having a slower rotation speed, the output shaft 50 is connected to an external mechanism, and the driving mechanism can output a large torque, and can realize a large reduction ratio, and can be applied to occasions such as vehicle doors, seats and the like.

Wherein, the motor 11 is a brush motor or a brushless motor. When needs actuating mechanism has self-locking function, can select for use to have the brush motor, have brush motor cost lower some, when needs actuating mechanism has the back drive function, can select to use brushless motor for when the car moves the door, generally select for use brushless motor.

Example 1: as shown in fig. 1 to 18, the primary speed reduction unit 20 includes a worm 21 and a worm wheel 22 engaged with the worm 21, the power shaft 12 is positioned and connected to the worm 21, and the central shaft 30 is connected to the worm wheel 22. In this embodiment, the primary reduction unit 20 is a combination of a worm gear and a worm, the worm is connected to the power shaft 12 of the motor, the worm gear 22 is engaged with the worm, the central shaft 30 is engaged with the worm gear 22, the power shaft 12 drives the worm 21 to rotate, the worm drives the worm gear 22 to rotate synchronously with the central shaft 30, as shown in fig. 6 and 14, the worm gear 22 is installed in the installation bracket 60.

Example 2: as shown in fig. 19 to 24, the primary speed reduction unit 20 includes a bevel gear 23 and a large gear 24 engaged with the bevel gear 23, the power shaft 12 is connected to the bevel gear 23, and the central shaft 30 is connected to the large gear 24. In this embodiment, the primary reduction unit 20 is formed by combining bevel gears, the bevel gear 23 is connected to the power shaft 12 of the motor, the large gear disc 24 and the inner core of the bevel gear 23, the central shaft 30 is clamped to the large gear disc 24, the power shaft drives the bevel gear 23 to rotate, and the bevel gear drives the large gear disc 24 and the central shaft to synchronously rotate.

As shown in fig. 7-9, the central shaft 30 and the eccentric shafts 34 are both cylindrical structures, the diameter of the eccentric shafts 34 is smaller than that of the central shaft 30, the central shaft 30 and the eccentric shafts 34 are provided with central holes 32 along the axial direction, the central holes 32 are arranged coaxially with the central shaft 30, the eccentric shafts 34 are arranged eccentrically with the central holes 32, and a plurality of ribs 31 are formed on the outer surface of the central shaft 30 and extend radially outward. The center hole 32 is opened along the entire axial direction of the center shaft and the eccentric shaft, as shown in fig. 14 and 24, the center shaft 30 is inserted into the worm wheel 22 or the large toothed disc 24 through the rib 31 and rotates together with the worm wheel 22 or the large toothed disc 24, the eccentric shaft 34 is disposed on one end surface of the center shaft, the center shaft and the eccentric shaft are integrally formed, the eccentric shaft and the center axis of the center shaft are not on the same straight line, and the external toothed disc 41 is sleeved on the eccentric shaft, so that when the center shaft rotates, the external toothed disc 41 eccentrically vibrates within the limits of the eccentric shaft and the internal toothed disc 43.

As shown in fig. 7, the central shaft 30 is provided with a plurality of weight ports 33 in the axial direction, and the plurality of weight ports 33 are arranged around the periphery of the central hole 32. Since the eccentric shaft 34 is provided on the center shaft, unbalance of the center shaft is easily caused, and in order to maintain a balanced state when the center shaft rotates as much as possible, weights of different weights may be placed in the weight holes 33.

As shown in fig. 6 and 11, a plurality of protruding columns 42 are formed by extending a first end surface of the outer toothed disc 41 along an axial direction, a first end surface of the output shaft 50 is engaged with the protruding columns 42, and one or two outer toothed discs 41 are disposed in the inner toothed disc 43. The outer toothed plate is fitted into the output shaft 50 via the studs 42, and as shown in fig. 6, one outer toothed plate 41 is provided in the inner toothed plate 43 in embodiment 1, and as shown in fig. 22, two outer toothed plates 41 are provided in parallel in the inner toothed plate 43 in embodiment 2.

As shown in fig. 6, a first end face of the output shaft 50 extends in an axial direction to form a center post 51, the center post 51 is arranged coaxially with the output shaft 50, and the center post 51 extends into the central hole 32. The central column 51 on the output shaft 50 extends into the central hole 32 of the central shaft, so that the central shaft and the output shaft rotate coaxially, and the running stability of the driving mechanism is improved; as shown in fig. 15-18, the output shaft may take different configurations as desired, such as a quincuncial shape, an octapetal shape, a spline shape, and so on.

As shown in fig. 6 and 22, the driving mechanism further includes a mounting bracket 60, the output shaft 50 and the central shaft 30 are both mounted on the mounting bracket 60 through a bearing 44, the bearing 44 is mounted between the eccentric shaft 34 and the outer toothed plate 41, and the inner toothed plate 43 is fixedly mounted on the mounting bracket 60. In order to further improve the running stability of the central shaft, bearings are arranged between the two ends of the central shaft in the axial direction and the mounting bracket.

A trackless sliding door is provided with the combined driving mechanism, and an output shaft 50 of the combined driving mechanism is connected with the sliding door through a four-bar mechanism 70. As shown in fig. 25, when the driving mechanism is used for sliding the door, the output shaft of the driving mechanism drives the four-bar linkage 70, the four-bar linkage 70 is connected to the sliding door, and the driving mechanism drives the sliding door to slide, thereby opening and closing the door.

The operation process of the application is as follows: taking embodiment 1 as an example, the controller controls the motor 11 to rotate, the power shaft 12 of the motor rotates the worm 21, the worm 21 rotates the worm wheel 22, the worm wheel drives the outer toothed disc 41 to eccentrically vibrate in the inner toothed disc 43 through the eccentric shaft 34 on the central shaft 30, the outer toothed disc 41 drives the output shaft 50 to synchronously operate, and the output shaft 50 drives the vehicle door to slide through the four-bar linkage 70, thereby completing the opening and closing operation of the vehicle door.

It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. A kind of hybrid drive mechanism, characterized by: including power pack (10), one-level reduction unit (20), drive unit, second grade reduction unit (40) and output shaft (50) that are used for providing power, power pack (10) includes motor (11), drive unit includes center pin (30), fixed be equipped with on center pin (30) with eccentric shaft (34) that the center pin was eccentrically arranged, second grade reduction unit (40) include inner tooth dish (43) and place in outer tooth dish (41) in inner tooth dish (43), just the number of teeth on outer tooth dish (41) with the number of teeth inequality on inner tooth dish (43), power shaft (12) of motor (11) connect in one-level reduction unit (20), one-level reduction unit (20) connect in center pin (30), outer tooth dish (41) cover is located eccentric shaft (34), output shaft (50) connect in outer tooth dish (41), the power unit can drive a first-level speed reduction unit (20) to rotate, the first-level speed reduction unit (20) drives the central shaft (30) to rotate, and the central shaft (30) drives the output shaft (50) to rotate through the outer fluted disc (41).

2. The compound drive mechanism as defined in claim 1, wherein: the primary speed reducing unit (20) comprises a worm (21) and a worm wheel (22) in meshed connection with the worm (21), the power shaft (12) is positioned and connected to the worm (21), and the central shaft (30) is connected to the worm wheel (22).

3. The compound drive mechanism as defined in claim 1, wherein: the primary speed reducing unit (20) comprises a bevel gear (23) and a large fluted disc (24) in meshed connection with the bevel gear (23), the power shaft (12) is connected to the bevel gear (23) in a positioning mode, and the central shaft (30) is connected to the large fluted disc (24).

4. The compound drive mechanism as defined in claim 1, wherein: the central shaft (30) and the eccentric shaft (34) are both of cylindrical structures, the diameter of the eccentric shaft (34) is smaller than that of the central shaft (30), central holes (32) are formed in the central shaft (30) and the eccentric shaft (34) along the axial direction, the central holes (32) and the central shaft (30) are coaxially arranged, the eccentric shaft (34) and the central holes (32) are eccentrically arranged, and a plurality of convex ribs (31) are formed on the outer surface of the central shaft (30) in a radially outward extending mode.

5. The compound drive mechanism as defined in claim 4, wherein: the central shaft (30) is provided with a plurality of weight holes (33) along the axial direction, and the weight holes (33) are arranged around the central hole (32).

6. The compound drive mechanism as defined in claim 1, wherein: the first end face of the outer toothed disc (41) extends along the axial direction to form a plurality of convex columns (42), the first end face of the output shaft (50) is clamped on the convex columns (42), and one or two outer toothed discs (41) are arranged in the inner toothed disc (43).

7. The compound drive mechanism of claim 4, wherein: the first end face of the output shaft (50) extends along the axial direction to form a central column (51), the central column (51) and the output shaft (50) are coaxially arranged, and the central column (51) extends into the central hole (32).

8. The compound drive mechanism as defined in claim 1, wherein: the eccentric shaft transmission mechanism further comprises a mounting bracket (60), the output shaft (50) and the central shaft (30) are mounted on the mounting bracket (60) through bearings (44), the bearings (44) are mounted between the eccentric shaft (34) and the outer toothed disc (41), and the inner toothed disc (43) is fixedly mounted on the mounting bracket (60).

9. The compound drive mechanism as defined in claim 1, wherein: the motor (11) is a brush motor or a brushless motor.

10. The utility model provides a trackless sliding door which characterized in that: the composite driving mechanism as claimed in any one of claims 1 to 9 is mounted on the sliding door, and an output shaft (50) of the composite driving mechanism is connected to the sliding door through a four-bar linkage (70).

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