CN111197626A

CN111197626A - Integrated multifunctional gear box

Info

Publication number: CN111197626A
Application number: CN202010142838.XA
Authority: CN
Inventors: 潘忠利
Original assignee: Wuxi Krapelong Automotive Technology Co ltd
Current assignee: Wuxi Krapelong Automotive Technology Co ltd
Priority date: 2020-03-04
Filing date: 2020-03-04
Publication date: 2020-05-26

Abstract

The invention discloses an integrated multifunctional gear box which comprises a box body, an input part and an output shaft, wherein the input part is connected with a power supply device, the output shaft is connected with a transmission device, a functional piece is arranged on the output shaft, and the functional piece is at least one of a connecting piece with connecting and slipping functions and a damping piece with damping function. The gearbox is integrated with a power transmission function, a connection function, a slipping function and a damping function, so that the use functionality of the gearbox is improved, the overall weight, the volume and the production cost of an application system are greatly reduced, the application system has the advantages of light weight, small volume, small occupied space and low production cost, the overall production, processing and installation arrangement of the application system are facilitated, and the development requirements of application products are well met.

Description

Integrated multifunctional gear box

Technical Field

The invention relates to the technical field of gear boxes, and particularly provides an integrated multifunctional gear box.

Background

The conventional electric stay bar system of the automobile tail door comprises: the transmission device comprises a motor, a gearbox, a transmission device (such as a screw rod) and a support rod, and in order to realize accurate and safe transmission of power to the transmission device by the gearbox, protective devices such as a coupler, a damper, a clutch and the like are usually arranged between the gearbox and the transmission device. However, due to the fact that a plurality of protection devices are installed, the whole size of the electric stay bar system of the automobile tail door is large, the occupied space is large, the production cost is high, and the development requirement of modern new energy electric automobiles can not be well met.

In view of the above, the present invention is particularly proposed.

Disclosure of Invention

In order to overcome the defects, the invention provides the integrated multifunctional gear box which has multiple use functions, is reasonable and compact in structure, can ensure that the whole application system has the advantages of light weight, small volume, small occupied space and low production cost, and is beneficial to production, processing, installation and arrangement of the application system.

The technical scheme adopted by the invention for solving the technical problem is as follows: an integrated multifunctional gear box comprises a box body, an input part and an output shaft, wherein the input part is connected with a power supply device, the output shaft is connected with a transmission device, a functional piece is mounted on the output shaft, and the functional piece selects at least one of a connecting piece with a connecting and slipping function and a damping piece with a damping function.

As a further improvement of the invention, the functional element is a connecting element and a damping element.

As a further improvement of the invention, the coupling member has a spline housing which can be positioned and sleeved on the transmission device, the spline housing is tightly fitted and embedded in the output shaft, and a friction elastic sheet is further sleeved between the spline housing and the output shaft.

As a further improvement of the invention, an installation groove which extends along the axial direction of the output shaft and is opened on one end surface of the output shaft in the axial direction is arranged on the output shaft, and the spline sleeve is embedded in the installation groove in a close fit manner;

correspondingly, the friction elastic sheet is sleeved between the mounting groove and the spline housing.

As a further improvement of the invention, the damping part is provided with a flange outer ring, a damping inner ring, an inner torsion spring and an outer torsion spring, wherein the flange outer ring is sleeved outside the output shaft and can provide a supporting acting force for the output shaft, and meanwhile, one axial side of the flange outer ring is fixedly connected with the box body; the damping inner ring is arranged in the flange outer ring and is also sleeved outside the output shaft; the inner torsion spring is tightly held on the outer wall of the output shaft, and a torsion pin of the inner torsion spring is hooked on the damping inner ring; the outer torsion spring is tightly held on the outer wall of the damping inner ring, the twisting feet of the outer torsion spring are also hooked on the flange outer ring, and in addition, the outer torsion spring is opposite to the rotation direction of the inner torsion spring.

As a further improvement of the invention, the inner diameter of the flange outer ring is matched with the outer diameter of the output shaft;

the inner wall of the flange outer ring is concavely provided with a containing ring groove extending along the circumferential direction of the inner wall, and the damping inner ring, the inner torsion spring and the outer torsion spring are all arranged in the containing ring groove.

As a further improvement of the invention, the flange outer ring is detachably positioned and mounted on the other axial side of the flange outer ring, which is opposite to the box body, and the sealing cover is also provided with a through hole capable of exposing the spline sleeve and the output shaft.

① the invention stated gear box on the basis of having function of power transmission, have increased and connected, slipped and damped the function newly, thus has promoted the use functionality of the gear box, and greatly reduced the integral weight, volume and production cost of the application system (such as the electronic brace rod system of the car tail gate), make the application system have light in weight, small, take up space little, advantage of low production cost, do benefit to its integral production processing and installation arrangement, has well satisfied the development requirement of the application product.

Drawings

FIG. 1 is a schematic structural view of a first embodiment of an integrated multifunction gearbox according to the present invention;

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

FIG. 3 is a schematic view of the assembled structure of the gearbox and motor shown in FIG. 1;

FIG. 4 is a schematic structural view of a second embodiment of the integrated multifunction gearbox of the present invention;

FIG. 5 is a schematic cross-sectional view of the gear case shown in FIG. 4.

The following description is made with reference to the accompanying drawings:

1, a box body; 2-an input section; 3-an output shaft; 4-a coupling member; 40-spline housing; 41-friction spring plate; 5, a damping part; 50-flange outer ring; 51, damping inner rings; 52-internal torsion spring; 53-external torsion spring; 500-accommodating ring groove; and 6, sealing the cover.

Detailed Description

The following description of the embodiments of the present invention is provided by way of specific examples, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein.

It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions of the present invention, so that the present invention has no technical significance.

Example 1:

referring to fig. 1 to fig. 3, there are shown a schematic structural diagram, a schematic sectional structural diagram, and an assembly structural diagram of the integrated multifunctional gearbox of the first embodiment of the present invention when assembled with a motor.

The integrated multifunctional gearbox comprises a box body 1 (in the embodiment, an outer gear ring is a part of the box body), an input part 2 (an input shaft or an input gear can be adopted) connected with a power supply device (such as a motor M), and an output shaft 3 connected with a transmission device (such as a screw rod), wherein a functional piece is arranged on the output shaft 3, and the functional piece is at least one of a connecting piece 4 with a connecting and slipping function and a damping piece 5 with a damping function.

In the present embodiment, it is preferable that the functional member is a coupling member 4 and a damping member 5.

In this embodiment, preferably, the coupling member 4 has a spline housing 40 (internal spline structure) that can be positioned and sleeved on the transmission device, the spline housing 40 is tightly fitted and embedded in the output shaft 3, and a friction elastic sheet 41 is further sleeved between the spline housing 40 and the output shaft 3.

Further preferably, the output shaft 3 is provided with an installation groove which extends along the axial direction and is opened on one end surface of the output shaft in the axial direction, and the spline housing 40 is tightly fitted and embedded in the installation groove; correspondingly, the friction elastic sheet 41 is sleeved between the mounting groove and the spline housing 40.

In this embodiment, preferably, the damping member 5 has a flange outer ring 50, a damping inner ring 51, an inner torsion spring 52 and an outer torsion spring 53, wherein the flange outer ring 50 is sleeved outside the output shaft 3 and can provide a supporting acting force for the output shaft 3, meanwhile, one axial side of the flange outer ring 50 is also fixedly connected to the box body 1, and a welding fixing manner or an integral connection manner can be adopted for the fixing manner between the flange outer ring 50 and the box body 1; the damping inner ring 51 is arranged in the flange outer ring 50, and the damping inner ring 51 is also sleeved outside the output shaft 3; the inner torsion spring 52 is tightly held on the outer wall of the output shaft 3, and a torsion pin of the inner torsion spring 52 is also hooked on the damping inner ring 51; the outer torsion spring 53 is tightly held on the outer wall of the damping inner ring 51, the twisting feet of the outer torsion spring 53 are also hooked on the flange outer ring 50, and in addition, the rotation directions of the outer torsion spring 53 and the inner torsion spring 52 are opposite.

Further preferably, the inner diameter of the flange outer ring 50 is matched with the outer diameter of the output shaft 3, so as to support the output shaft; the outer wall of the flange outer ring is not unique in shape and can be designed according to the product requirements;

in addition, a containing ring groove 500 extending along the circumferential direction is concavely arranged on the inner wall of the flange outer ring 50, and the damping inner ring 51, the inner torsion spring 52 and the outer torsion spring 53 are all installed in the containing ring groove 500.

Further preferably, a sealing cover 6 is further provided, the sealing cover 6 is detachably positioned and mounted on the other axial side, opposite to the box body 1, of the flange outer ring 50, and a through hole capable of exposing the spline housing 40 and the output shaft 3 is further provided on the sealing cover 6.

Example 2:

referring to fig. 4 to 5, a schematic structural diagram and a schematic sectional structural diagram of a second embodiment of the integrated multifunctional gearbox according to the present invention are shown.

The gearbox structure shown in the embodiment 2 is basically the same as that shown in the embodiment 1, and the main difference is that: the outer wall shape of the flange outer 50 shown in embodiment 2 is different from the outer wall shape of the flange outer 50 shown in embodiment 1. The shape difference of the outer wall of the outer ring 50 of the flange is mainly determined by the design requirement of the product, and of course, the shape difference of the outer wall further widens the applicability of the gearbox in application.

According to the structural structure of the gear box, the gear box is additionally provided with the functions of connection, slipping and damping on the basis of the function of power transmission, and the working principle of the gear box for realizing the functions of connection, slipping and damping is as follows:

a) the functions of connection and slipping are realized: after the gear box is assembled, static friction force exists among the output shaft 3, the friction elastic sheet 41 and the spline housing 40, and the static friction force among the three can be adjusted by adjusting the interference amount of the friction elastic sheet 41. When the gearbox normally works, the power output by the motor can drive the friction elastic sheet 41 and the spline housing 40 to rotate forwards or backwards together through the output shaft 3, and when the gearbox is operated manually, namely the transmission device drives the output shaft 3 to move reversely, the power output by the transmission device can drive the output shaft 3 to rotate forwards or backwards through the spline housing 40 and the friction elastic sheet 41, but if the sliding friction force (namely resistance force) between the spline housing 40 and the friction elastic sheet 41 is larger than a set value of static friction force, the spline housing 40 can slip and idle, so that the teeth inside the gearbox are not easily damaged.

b) The damping function is realized: in the present invention, the torque of the damping member 5 (for example, set to 0.1n.m) can be adjusted by coordinating the torque of the inner torsion spring 52 and the outer torsion spring 53, the friction of the inner torsion spring 52 against the outer wall of the output shaft 3, and the friction of the outer torsion spring 53 against the outer wall of the damping inner ring 51. When the motor drives the output shaft 3 to rotate forward, the inner torsion spring 52 tightens the output shaft 3 more and more, and correspondingly, the outer torsion spring 53 loosens the damping inner ring 51 more and more, so that the damping inner ring 51 can rotate under the driving of the inner torsion spring 52; when the motor drives the output shaft 3 to rotate reversely, the inner torsion spring 52 tightens the output shaft 3 more and more, and the outer torsion spring 53 tightens the damping inner ring 51 more and more, so that the output shaft 3 can rotate as long as the rotating power of the output shaft 3 is greater than the torque of the damping member 5 in the reverse rotation process. From the above, the damping member 5 of the present invention belongs to a two-way damper.

In conclusion, the gear box is integrated with a power transmission function, a connection function, a slipping function and a damping function, so that the use functionality of the gear box is improved, the overall weight, the volume and the production cost of an application system (such as an electric stay bar system of a tail door of an automobile) are greatly reduced, the application system has the advantages of light weight, small volume, small occupied space and low production cost, the integral production, processing and installation of the application system are facilitated, and the development requirements of application products are well met.

The above description is only a preferred embodiment of the present invention, but not intended to limit the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be considered as within the protective scope of the present invention.

Claims

1. An integrated multifunctional gear box comprises a box body (1), an input part (2) connected with a power supply device and an output shaft (3) connected with a transmission device, and is characterized in that: the output shaft (3) is provided with a functional piece, and the functional piece is at least one of a connecting piece (4) with connecting and slipping functions and a damping piece (5) with damping functions.

2. The integrated multifunction gearbox of claim 1, wherein: the functional parts adopt a connecting part (4) and a damping part (5).

3. The integrated multifunction gearbox of claim 1, wherein: the connecting piece (4) is provided with a spline sleeve (40) which can be positioned and sleeved on the transmission device, the spline sleeve (40) is embedded in the output shaft (3) in a tight fit mode, and a friction elastic sheet (41) is further sleeved between the spline sleeve (40) and the output shaft (3).

4. The integrated multifunction gearbox of claim 3, wherein: the output shaft (3) is provided with an installation groove which extends along the axial direction of the output shaft and is opened on one axial end surface of the output shaft, and the spline sleeve (40) is embedded in the installation groove in a tight fit manner;

correspondingly, the friction elastic sheet (41) is sleeved between the mounting groove and the spline sleeve (40).

5. The integrated multifunction gearbox of claim 3, wherein: the damping piece (5) is provided with a flange outer ring (50), a damping inner ring (51), an inner torsion spring (52) and an outer torsion spring (53), wherein the flange outer ring (50) is sleeved outside the output shaft (3) and can provide a supporting acting force for the output shaft (3), and meanwhile, one axial side of the flange outer ring (50) is fixedly connected with the box body (1); the damping inner ring (51) is arranged in the flange outer ring (50), and the damping inner ring (51) is also sleeved outside the output shaft (3) at the same time; the inner torsion spring (52) is tightly held on the outer wall of the output shaft (3), and the torsion foot of the inner torsion spring (52) is also hooked on the damping inner ring (51); the outer torsion spring (53) is tightly held on the outer wall of the damping inner ring (51), the twisting feet of the outer torsion spring (53) are also hooked on the flange outer ring (50), and in addition, the outer torsion spring (53) and the inner torsion spring (52) are opposite in rotation direction.

6. The integrated multifunction gearbox of claim 5, wherein: the inner diameter of the flange outer ring (50) is matched with the outer diameter of the output shaft (3);

the inner wall of the flange outer ring (50) is concavely provided with an accommodating ring groove (500) extending along the circumferential direction of the flange outer ring, and the damping inner ring (51), the inner torsion spring (52) and the outer torsion spring (53) are all arranged in the accommodating ring groove (500).

7. The integrated multifunction gearbox of claim 5, wherein: the sealing cover (6) is further arranged, the sealing cover (6) is detachably positioned and installed on the other axial side, back to the box body (1), of the flange outer ring (50), and a through hole capable of exposing the spline sleeve (40) and the output shaft (3) is further formed in the sealing cover (6).