Electric supporting rod driving device

Abstract

The utility model relates to the technical field of automobile parts, in particular to an electric supporting rod driving device used for an automobile electric tail door. The motor is arranged in the shell; a decelerator; and a damper; wherein the damper is arranged between the motor and the speed reducer and is used for applying damping to the output end of the motor, and the speed reducer is used for expanding the damping. The position of the damper is adjusted, and the damper is arranged at the input end position of the speed reducer, so that compared with an existing electric supporting rod, the size of the driving device can be reduced, more space and production cost are saved, resistance generated by the damper can be amplified through the speed reducer subsequently, and the damping effect is improved. Therefore, the impact and vibration of the inertia load of the motor are effectively reduced, and the stability and the service life of the driving device are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts, and more specifically, to a driving device for an electric support rod on an automobile electric tailgate. Background Art

[0002] With the continuous updating and development of automobile technology, the traditional manual tailgate opening method is being replaced by electric tailgates more and more. The electric tailgate support rod is the force actuator of the electric tailgate. The new electric support rod technology is the development trend of the automobile tailgate switch to achieve intelligence and comfort.

[0003] The publication number is CN106320883A, which is an electric opening and closing system for a car tailgate. It records that the first end of the screw rod is connected to a damper composed of a screw rod end coupling guard ring, a screw rod end coupling, a toothed retaining ring, a pentagonal retaining ring, a thick sealing baffle, and a wave spring; the motor is connected to the screw rod through a subassembly composed of a reducer, a motor end coupling, a motor end coupling housing, a coupling shock absorbing pad, and a thin sealing baffle, and is attached to the specification. Figure 1 As we all know, the motor is connected to the reducer, the reducer is connected to the damper, and the damper is connected to the lead screw to form a traditional system. However, this design will increase the volume of the drive device. Based on this, it is necessary to optimize it. Utility Model Content

[0004] The main purpose of the utility model is to provide an electric support rod driving device to solve the technical problems mentioned in the background technology.

[0005] In order to solve the above technical problems, the utility model proposes an electric support rod driving device, comprising:

[0006] A housing; and a

[0007] Motor;

[0008] reducer;

[0009] and dampers;

[0010] The damper is arranged between the motor and the reducer, and is used to apply damping to the output end of the motor, and the damping is amplified by the reducer.

[0011] In the above technical solution, further, the damper includes:

[0012] The damping cover is arranged on the end cover of the motor output end, and the damping cover is provided with a mounting groove and a through hole penetrating the mounting groove;

[0013] The transmission sheet is arranged in the installation groove. The transmission sheet is a T-shaped hollow structure and is divided into a connecting section at a small end and a friction section at a large end. The connecting section is connected to the output end of the motor.

[0014] A wave spring is arranged at the end of the mounting groove;

[0015] and a friction plate, which is an annular structure and has two plates, and is respectively arranged on both sides of the friction section of the transmission plate;

[0016] One end of the wave spring is against the end cover of the motor output end, and the other end is against one of the friction plates, and applies pressure to the transmission plate, so that the other friction plate is against the inner wall of the installation groove.

[0017] In any of the above technical solutions, further, a limiting groove is provided on the inner wall of the installation groove of the damping cover along the length direction thereof;

[0018] Among them, a limiting protrusion embedded in the limiting groove is arranged on the friction plate, and the limiting protrusion is used to limit the rotation of the friction plate.

[0019] In any of the above technical solutions, further, there are multiple limiting grooves, which are arranged along the circumferential direction of the mounting groove, and the number of limiting protrusions on the friction plate is consistent with the number of limiting grooves and corresponds one to one.

[0020] In any of the above technical solutions, further, the hollow notch on the connecting section is cross-shaped, and a cross connecting portion adapted to the hollow notch on the connecting section is provided on the motor output end, and the motor output end is connected to the hollow notch on the connecting section via the cross connecting portion.

[0021] In any of the above technical solutions, further, the outer shell is a hollow sleeve-shaped structure, and a limit flange is arranged radially inward on the inner wall thereof, and the limit flange divides the inner chamber of the outer shell into a first installation chamber and a second installation chamber; a fixing member is arranged in the second installation chamber;

[0022] The first installation chamber is used for assembling the motor, the reducer and the damper; the chamber enclosed by the inner wall of the second installation chamber and the outer wall of the fixing member is used for fastening the bearing.

[0023] In any of the above technical solutions, further, the shell is an injection molded part, the inner wall of which is tapered and the draft angle is 0.6°.

[0024] Beneficial effect: Compared with the prior art, the present application adjusts the position of the damper and sets it at the input end of the reducer. In this way, compared with the previous electric struts, it can not only reduce the volume of the driving device and save more space and production costs, but also the resistance generated by the damper can be subsequently amplified by the reducer, thereby more effectively reducing the impact and vibration of the motor inertia load, thereby improving the stability and service life of the driving device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0027] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0028] Figure 3 It is a schematic diagram of the internal structure of the damper of the utility model;

[0029] Figure 4 It is a schematic diagram of the explosion structure of the damper of the utility model.

[0030] The following are the descriptions of the reference numerals:

[0031] 100, housing; 101, first installation chamber; 102, second installation chamber; 110, limiting flange; 120, fixing piece; 130, fastening bearing; 200, motor; 300, reducer; 400, damper; 410, damping cover; 411, limiting groove; 420, transmission plate; 430, wave spring; 440, friction plate; 441, limiting protrusion. DETAILED DESCRIPTION

[0032] Below, the example embodiments according to the present application will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application, and it should be understood that the present application is not limited to the example embodiments described herein. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0033] It should be noted that, as shown in this application and claims, unless the context clearly indicates an exception, the words "a", "an", "a kind" and / or "the" do not specifically refer to the singular, but may also include the plural. Generally speaking, the terms "include" and "comprise" only indicate the inclusion of clearly identified steps and elements, and these steps and elements do not constitute an exclusive list, and the method or device may also include other steps or elements.

[0034] If the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0035] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0037] The following embodiments are used to describe in detail a driving device for an electric support rod on an electric tailgate of a vehicle of the present application.

[0038] Embodiment 1:

[0039] like Figure 1-Figure 2As shown, in this embodiment, an electric support pole driving device includes: a housing 100; a motor 200 disposed in the housing 100; a reducer 300; and a damper 400;

[0040] The damper 400 is disposed between the motor 200 and the reducer 300 , and is used to apply damping to the output end of the motor 200 , and the reducer 300 amplifies the damping.

[0041] At present, the dampers 400 on the existing reducers 300 are all arranged at the tail thereof, that is, the output end of the motor 200 is first connected to the input end of the reducer 300, and the damper 400 is placed at the output end position of the reducer 300. This design will cause the volume of the entire driving device to increase. For this reason, the position of the damper 400 is adjusted and set at the input end position of the reducer 300. In this way, compared with the previous electric struts, not only the volume of the driving device can be reduced, saving more space and production costs, but also the resistance generated by the damper 400 can be subsequently amplified by the reducer 300, thereby more effectively reducing the impact and vibration of the inertial load of the motor 200, thereby improving the stability and service life of the driving device.

[0042] Embodiment 2:

[0043] This embodiment is a further improvement made on the basis of the first embodiment.

[0044] like Figure 2-Figure 4 As shown, in this embodiment, the damper 400 includes: a damping cover 410, which is arranged on the end cover of the output end of the motor 200, and a mounting groove and a through hole penetrating the mounting groove are opened on the damping cover 410; a transmission plate 420, which is arranged in the mounting groove, and the transmission plate 420 is a T-shaped hollow structure, and is divided into a connecting section at a small end and a friction section at a large end, and the connecting section is connected to the output end of the motor 200; a wave spring 430, which is arranged at the end of the mounting groove; and a friction plate 440, which is an annular structure, has two plates, and is respectively arranged on both sides of the friction section of the transmission plate 420;

[0045] One end of the wave spring 430 abuts against the end cover of the output end of the motor 200, and the other end abuts against one of the friction plates 440, and applies pressure to the transmission plate 420, so that the other friction plate 440 abuts against the inner wall of the installation groove.

[0046] The damper 400 is mainly composed of a damping cover 410, a transmission plate 420, a wave spring 430 and a friction plate 440. The damping cover 410 can be detachably installed on the end cover of the output end of the motor 200 by means of bolts, screws and other connecting parts. Then the wave spring 430, the friction plate 440 and the transmission plate 420 are installed in the damping cover 410. The wave spring 430 applies pressure to the friction plate 440 and the transmission plate 420 so that they are pressed against the side end surface of the mounting groove of the damping cover 410. Then the output end of the motor 200 passes through the wave spring 430, the friction plate 440 and the transmission plate 420 in sequence and is connected to the transmission plate 420. Specifically, the hollow notch on the transmission plate 420 is cross-shaped, and the output end of the motor 200 has a cross-shaped connecting portion that matches the cross-shaped hollow notch, so that when the output end of the motor 200 rotates, the transmission plate 420 will rotate synchronously, and the damping effect is achieved through the pressure applied by the wave spring 430.

[0047] It should be noted that in order to prevent the transmission plate 420 from driving the friction plate 440 to rotate when rotating, a limiting groove 411 is opened on the inner wall of the installation groove of the damping cover 410; the friction plate 440 is provided with a limiting protrusion 441 embedded in the limiting groove 411, and the limiting protrusion 441 is used to limit the rotation of the friction plate 440.

[0048] Optimally, there are several limit grooves 411, which are distributed along the circumferential direction of the inner wall of the mounting groove of the damping cover 410, and the number of protrusions on the friction plate 440 is consistent with the number of limit grooves 411, and they correspond one to one. This arrangement allows the friction plate 440 to be evenly stressed and its service life to be increased.

[0049] Embodiment three:

[0050] This embodiment is a further improvement made on the basis of any of the above embodiments.

[0051] like Figure 1 and Figure 2 As shown, in this embodiment, the housing 100 of the driving device is a hollow sleeve-shaped structure, and a limiting flange 110 is radially inwardly arranged on the inner wall thereof, and the limiting flange 110 divides the inner chamber of the housing 100 into a first installation chamber 101 and a second installation chamber 102; a fixing member 120 is arranged in the second installation chamber 102;

[0052] The first installation chamber 101 is used for assembling the motor 200 , the reducer 300 and the damper 400 ; the chamber enclosed by the inner wall of the second installation chamber 102 and the outer wall of the fixing member 120 is used for fastening the bearing 130 .

[0053] The housing 100 is an injection molded part. To reduce the complexity of assembling the motor 200, the reducer 300 and other components, after the fastening bearing 130 is installed, the housing 100 is directly injection molded at one time, and the housing 100, the limiting flange 110 and the fixing member 120 are molded. After that, the connected motor 200 and the reducer 300 can be directly inserted into the housing 100, which is very convenient. To facilitate the processing of the housing 100, the inner wall of the housing 100 is set to be tapered, and the draft is 0.6°, so that it can be taken out smoothly when the mold is opened.

[0054] The embodiments of the present disclosure have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. An electric support rod driving device, characterized in that: include: A housing (100); and a Motor(200); reducer(300); and a damper (400); The damper (400) is arranged between the motor (200) and the reducer (300) and is used to apply damping to the output end of the motor (200), and the reducer (300) amplifies the damping.

2. The electric support rod driving device according to claim 1, characterized in that: The damper (400) comprises: A damping cover (410) is arranged on an end cover of an output end of the motor (200), wherein the damping cover (410) is provided with a mounting groove and a through hole penetrating the mounting groove; A transmission plate (420) is arranged in the installation groove, the transmission plate (420) is a T-shaped hollow structure and is divided into a connecting section at a small end and a friction section at a large end, the connecting section being connected to an output end of the motor (200); A wave spring (430) is arranged at an end of the mounting groove; and a friction plate (440), wherein the friction plate (440) is an annular structure and has two plates, which are respectively arranged on both sides of the friction section of the transmission plate (420); One end of the wave spring (430) abuts against the end cover of the output end of the motor (200), and the other end abuts against one of the friction plates (440), and applies pressure to the transmission plate (420), so that the other friction plate (440) abuts against the inner wall of the installation groove.

3. The electric support rod driving device according to claim 2, characterized in that: The inner wall of the mounting groove of the damping cover (410) is provided with a limiting groove (411) opened along the length direction thereof; Wherein, the friction plate (440) is provided with a limiting protrusion (441) embedded in the limiting groove (411), and the limiting protrusion (441) is used to limit the rotation of the friction plate (440).

4. The electric support rod driving device according to claim 3, characterized in that: There are a plurality of the limiting grooves (411), which are arranged along the circumferential direction of the mounting groove; the number of the limiting protrusions (441) on the friction plate (440) is consistent with the number of the limiting grooves (411), and they correspond one to one.

5. The electric support rod driving device according to claim 2, characterized in that: The hollow notch on the connecting section is in a cross shape, and a cross connecting portion adapted to the hollow notch on the connecting section is provided on the output end of the motor (200), and the output end of the motor (200) is connected to the hollow notch on the connecting section via the cross connecting portion.

6. The electric support rod driving device according to claim 1, characterized in that: The outer shell (100) is a hollow sleeve-shaped structure, and a limiting flange (110) is arranged radially inward on the inner wall thereof, and the limiting flange (110) divides the inner chamber of the outer shell (100) into a first installation chamber (101) and a second installation chamber (102); a fixing member (120) is arranged in the second installation chamber (102); The first installation chamber (101) is used for assembling the motor (200), the reducer (300) and the damper (400); and the chamber enclosed between the inner wall of the second installation chamber (102) and the outer wall of the fixing member (120) is used for fastening the bearing (130).

7. The electric support rod driving device according to claim 1, characterized in that: The housing (100) is an injection-molded part, the inner wall of which is tapered and the draft angle is 0.6°.

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