Electric machine device for driving a movable component in a vehicle

Abstract

The utility model relates to an electric motor device for driving a movable component in a vehicle, comprising: a rotor shaft having a worm section; an anti-attrition pad adapted to contact an axial end of the rotor shaft; the shell is provided with a first hole section suitable for containing the anti-attrition gasket and a second hole section adjacent to the first hole section in the axial direction, the diameter of the second hole section is smaller than that of the first hole section, and the transition face from the first hole section to the second hole section is located on the side, away from the axial end, of the anti-attrition gasket. One side, deviating from the first hole section, of the second hole section is at least partially closed and is provided with a hole bottom surface; the integrated damping element comprises a middle part and an edge part, one end of the middle part is supported on the hole bottom face, the other end of the middle part extends out of the second hole section, and the edge part is located between the transition face and the anti-attrition gasket. The noise reduction structure has the advantages that sufficient damping is provided through the middle part, and noise is effectively reduced through the edge part; through the integrated design, the damping element is easy to manufacture.

Description

Technical Field

[0001] The present application relates to a motor device for driving a movable component in a vehicle, in particular a window lift drive device, a sliding sunroof drive device, a steering column adjustment drive device or a seat adjustment drive device. Background Art

[0002] The movable parts in the vehicle, such as windows, sliding sunroofs, steering column or seats, are all equipped with motor devices for driving. In order to make the movement as smooth as possible, the motor device usually also has a worm gear mechanism for transmission. The worm of the worm gear mechanism is arranged on the rotor shaft of the motor device. The motor device generally also has a plastic anti-friction pad. The anti-friction pad contacts the end face of the rotor shaft through its smooth surface, thereby reducing friction and replacing other components to be worn.

[0003] The rotor shaft moves axially due to the worm, and thus pushes the anti-friction pad in the axial direction. The anti-friction pad hits the housing of the motor device due to the push of the rotor shaft, thereby generating noise. Utility Model Content

[0004] An object of the present application is to provide an electric machine device for driving a movable component in a vehicle, so that sufficient damping can be provided by a middle portion of a damping element and noise can be effectively reduced by an edge portion.

[0005] According to a first aspect of the present application, there is provided a motor device for driving a movable component in a vehicle, the motor device comprising:

[0006] a rotor shaft having a worm section;

[0007] a friction reducing washer adapted to contact an axial end of the rotor shaft;

[0008] A housing, wherein the housing has a first hole section suitable for accommodating the friction-reducing pad and a second hole section axially adjacent to the first hole section, the diameter of the second hole section is smaller than the diameter of the first hole section, a transition surface from the first hole section to the second hole section is located on a side of the friction-reducing pad away from the axial end, and the second hole section is at least partially closed on a side away from the first hole section and has a hole bottom surface;

[0009] An integrated damping element, the damping element is suitable for damping the anti-friction pad and includes a middle portion overlapping the hole bottom surface in axial projection and an edge portion overlapping the transition surface in axial projection, one end of the middle portion is supported on the hole bottom surface and the other end extends out of the second hole segment and faces the anti-friction pad, and the edge portion is located between the transition surface and the anti-friction pad.

[0010] According to an optional embodiment of the present application, the axial end is an axial end of the rotor shaft adjacent to the worm section.

[0011] According to an optional embodiment of the present application, the edge portion forms an annular flange of the damping element.

[0012] According to an optional embodiment of the present application, the damping element is a soft damping element; the soft damping element is a rubber damping element.

[0013] According to an optional embodiment of the present application, when the damping element is installed on the housing and is not compressed in the axial direction, the edge portion is spaced apart from the transition surface or abuts against the transition surface.

[0014] According to an optional embodiment of the present application, when the damping element is installed on the housing and is not compressed in the axial direction, the connecting portion between the edge portion and the middle portion is spaced apart from the transition surface.

[0015] According to an optional embodiment of the present application, when the damping element is installed on the housing and is not compressed axially, the first end surface of the edge portion facing the friction reducing pad is flush or retracted relative to the second end surface of the middle portion facing the friction reducing pad.

[0016] According to an optional embodiment of the present application, when the damping element is installed in the housing and is not compressed in the axial direction, the middle part of the damping element is loosely fitted with the second hole segment, and / or the edge part of the damping element is loosely fitted with the first hole segment.

[0017] According to an optional embodiment of the present application, the motor device is constructed as a window glass lifting drive device, a sliding sunroof drive device, a steering wheel column adjustment drive device or a seat adjustment drive device; and / or, the friction reducing gasket is a plastic gasket; and / or, the motor device is a DC motor device, and the rotor shaft is an armature shaft.

[0018] According to an optional embodiment of the present application, the motor device includes:

[0019] a worm gear arrangement adapted to be driven by a worm section of the rotor shaft; and / or

[0020] A rotor is carried by the rotor shaft and a stator cooperates with the rotor.

[0021] At least in some embodiments, the positive effects of the present application are: the edge portion can effectively prevent the noise generated by the friction-reducing gasket directly hitting the housing of the motor device; the middle portion with a larger axial length can better damp the friction-reducing gasket; and the damping element can be easily manufactured by the integrated design of the edge portion and the middle portion. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present application will be described in more detail below with reference to the accompanying drawings, so that the principles, features and advantages of the present application can be better understood. The accompanying drawings include:

[0023] Figure 1 An example of the motor device of the present application is shown in a partial cross-sectional view.

[0024] Figure 2 The schematic diagram shows an enlarged Figure 1 The part enclosed by a dotted circle.

[0025] Figure 3 A detail of the housing is shown separately in a schematic enlarged manner.

[0026] Figure 4 An example of a damping element of an electric machine arrangement is shown in a schematic partial diagram.

[0027] Figure 5 An example of a damping element of an electric machine arrangement is shown in a schematic partial diagram.

[0028] Figure 6 An example of a damping element of an electric machine arrangement is shown in a schematic partial diagram.

[0029] Figure 7 An example of a damping element of an electric machine arrangement is shown in a schematic partial diagram.

[0030] Figure 8 An example of a damping element of an electric machine arrangement is shown in a schematic partial diagram.

[0031] Fig. 9 An example of a damping element of an electric machine arrangement is shown in a schematic partial diagram. DETAILED DESCRIPTION

[0032] In order to make the technical problems, technical solutions and beneficial technical effects to be solved by the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and multiple exemplary embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, rather than to limit the scope of protection of the present application.

[0033] Figure 1An example of the motor device of the present application is shown in a partial cross-sectional view. The motor device is used to drive a movable component in a vehicle. The motor device is configured, for example, as a window glass lifting drive device, a sliding sunroof drive device, a steering column adjustment drive device, or a seat adjustment drive device, etc. That is, the movable component is a vehicle window, a sliding sunroof, a steering column, or a seat, etc.

[0034] Figure 2 The schematic diagram shows an enlarged Figure 1 The part is enclosed by a dotted line. Figure 2 In the following figures, the friction-reducing pad 2 is indicated by dots, the damping element 4 is indicated by hatching and is divided into a middle portion 42 and an edge portion 41 by dotted lines.

[0035] Figure 3 A detail of the housing 3 is shown separately in a schematic enlarged manner.

[0036] like Figure 1 , Figure 2 and Figure 3 As shown, the motor device comprises:

[0037] a rotor shaft 1 having a worm section 10;

[0038] a friction reducing washer 2, wherein the friction reducing washer 2 is adapted to contact an axial end 11 of the rotor shaft 1;

[0039] A housing 3, wherein the housing 3 has a first hole section 31 suitable for accommodating the friction-reducing pad 2 and a second hole section 32 axially adjacent to the first hole section 31, wherein the diameter of the second hole section 32 is smaller than the diameter of the first hole section 31, and a transition surface 30 from the first hole section 31 to the second hole section 32 is located on a side of the friction-reducing pad 2 away from the axial end 11, and the second hole section 32 is at least partially closed on a side away from the first hole section 31 and has a hole bottom surface 33;

[0040] An integrated damping element 4, the damping element 4 is suitable for damping the friction reducing pad 2 and includes a middle portion 42 overlapping the hole bottom surface 33 in axial projection and an edge portion 41 overlapping the transition surface 30 in axial projection, one end 421 of the middle portion 42 is supported on the hole bottom surface 33 and the other end 422 extends out of the second hole section 32 and faces the friction reducing pad 2, and the edge portion 41 is located between the transition surface 30 and the friction reducing pad 2.

[0041] Thus, on the one hand, sufficient damping is provided by the middle portion 42 with a longer axial length and noise is effectively reduced by the thinner edge portion 41; on the other hand, the manufacturing of the damping element 4 is simplified by the integral design. The transition surface 30 is in particular an annular surface extending perpendicularly to the center axis 12 of the rotor shaft 1.

[0042] The motor device is, for example, a DC motor device. The rotor shaft 1 is, for example, an armature shaft.

[0043] like Figure 1 As shown, the motor device may further include:

[0044] a worm gear 5 adapted to be driven by the worm section 10 of the rotor shaft 1; and / or

[0045] A rotor 6 is carried by the rotor shaft 1 and a stator 7 cooperates with the rotor 6 .

[0046] The housing 3 is, for example, a gearbox housing of the motor device mainly used to accommodate a worm gear mechanism and other transmission components such as gears. The motor device also has, for example, a motor housing 8 mainly used to accommodate a rotor 6 and a stator 7 .

[0047] The motor device may also include other components such as bearings, electrical interfaces, screws, nuts, etc., which are not listed here one by one.

[0048] According to an exemplary embodiment of the present application, Figure 1 As shown, the axial end 11 is the axial end 11 of the rotor shaft 1 adjacent to the worm section 10 .

[0049] According to an exemplary embodiment of the present application, Figure 2 , the edge portion 41 forms an annular flange of the damping element 4. Here, the annular shape can be a continuous strict circular ring or a substantially annular shape with interruptions.

[0050] According to an exemplary embodiment of the present application, the damping element 4 is a soft damping element, which is in particular a rubber damping element, but it is also conceivable that the damping element 4 is made of other materials such as foam or sound insulation cotton.

[0051] Figure 4 An example of a damping element 4 of the motor device is shown in a partial schematic diagram. Here, the damping element 4 is mounted on the housing 3 and is not compressed in the axial direction. "The damping element is mounted on the housing" especially means that the middle part 42 of the damping element 4 is against the hole bottom surface 33 of the second hole section 32 of the housing 3.

[0052] According to an exemplary embodiment of the present application, Figure 4As shown, when the damping element 4 is mounted on the housing 3 and is not compressed in the axial direction, the edge portion 41 is spaced apart from the transition surface 30. Therefore, when the friction reducing pad 2 just starts to move axially, only the middle portion 42 of the damping element 4 is compressed. After the middle portion 42 is compressed to a certain extent, the edge portion 41 contacts the transition surface 30 and plays a damping role.

[0053] According to an exemplary embodiment of the present application, Figure 4 As shown, when the damping element 4 is mounted on the housing 3 and is not compressed in the axial direction, the first end surface 410 of the edge portion 41 facing the friction reducing pad 2 is flush with the second end surface 420 of the middle portion 42 facing the friction reducing pad 2. This facilitates the manufacture of the damping element 4.

[0054] Figure 5 An example of a damping element 4 of the motor device is shown in a partial schematic diagram. Here, the damping element 4 is mounted on the housing and is not compressed in the axial direction.

[0055] exist Figure 5 In the embodiment, the edge portion 41 is also spaced apart from the transition surface 30. Figure 4 Different, in Figure 5 In the embodiment, the first end surface 410 of the edge portion 41 facing the friction reducing pad 2 is retracted relative to the second end surface 420 of the middle portion 42 facing the friction reducing pad 2 .

[0056] Figure 6 An example of a damping element 4 of the motor device is shown in a partial schematic diagram. Here, the damping element 4 is mounted on the housing 3 and is not compressed in the axial direction.

[0057] exist Figure 6 In, with Figure 5 Similarly, the first end surface 410 of the edge portion 41 facing the friction reducing pad 2 is retracted relative to the second end surface 420 of the middle portion 42 facing the friction reducing pad 2. Figure 4 and Figure 5 Different, in Figure 6 In the embodiment, the edge portion 41 abuts against the transition surface 30 .

[0058] Figure 7 An example of a damping element 4 of the motor device is shown in a partial schematic diagram. Here, the damping element 4 is mounted on the housing 3 and is not compressed in the axial direction. Figure 7 The dotted line in the figure corresponds to the connecting portion 43 between the edge portion 41 and the middle portion 42, and the same is true for other related drawings.

[0059] According to an exemplary embodiment of the present application, Figure 7 As shown in FIG. 1 , when the damping element 4 is mounted on the housing 3 and is not compressed in the axial direction, the connecting portion 43 between the edge portion 41 and the middle portion 42 is spaced apart from the transition surface 30. Thus, when the middle portion 42 of the damping element 4 is compressed, the connecting portion 43 will not be pressed against the transition surface 30 at least at the beginning. Figure 4 Different, in Figure 7 In the embodiment, the free end 411 of the edge portion 41 of the damping element 4 can be in contact with the transition surface 30 .

[0060] Here, if the edge portion 41 is regarded as a rotating body formed by a rotating surface rotating around the central axis 12 of the rotor shaft 1, Figures 4 to 6 In the embodiment, the rotation surface of the edge portion 41 is rectangular, and in Figure 7 In the embodiment, the rotation surface of the edge portion 41 is a rhombus. In addition, it is also possible to imagine that the rotation surface of the edge portion 41 is a triangle, a trapezoid or a special shape.

[0061] Figure 8 An example of a damping element 4 of an electric machine arrangement is shown in a schematic partial diagram.

[0062] According to an exemplary embodiment of the present application, Figure 8 As shown, when the damping element 4 is installed in the housing 3 and is not compressed in the axial direction, the edge portion 41 of the damping element 4 is loosely matched with the first hole section 31. Figure 8 In the embodiment, for example, the diameter of the middle part 42, or the section of the middle part 42 corresponding to the second hole section 32, is smaller than the diameter of the second hole section 32. However, it is also conceivable that the middle part 42 and the second hole section 32 are also clearance-fitted.

[0063] Fig. 9 An example of a damping element 4 of an electric machine arrangement is shown in a schematic partial diagram.

[0064] According to an exemplary embodiment of the present application, Fig. 9 As shown, when the damping element 4 is installed in the housing 3 and is not compressed in the axial direction, the middle portion 42 of the damping element 4 is loosely matched with the second hole section 32. Fig. 9 In the embodiment, illustratively, the outer diameter of the edge portion 41 is smaller than the diameter of the first hole section 31 .

[0065] In this context, axial direction is understood to mean in particular the axial direction with respect to the center axis 12 of the rotor shaft 1 .

[0066] The size, quantity, position, shape and relationship of each element in the drawings should be understood as examples, rather than absolute limitations of the present application. Those skilled in the art can also imagine simple changes in the size, quantity, position, shape and relationship of these elements without departing from the scope of protection of the present application.

[0067] As long as it is permitted in principle, each of the features cited can be considered as separate and can be combined with any other features in any form without departing from the scope of protection of this application. If it is permitted in principle, even if it is not directly mentioned, the features described for one embodiment should be considered as being transferable to other embodiments at will.

[0068] Although the specific embodiments of the present application are described in detail herein, they are provided for the purpose of explanation only and should not be considered to limit the scope of the present application. Various substitutions, changes and modifications may be conceived without departing from the spirit and scope of the present application.

[0069] Reference numerals list

[0070] 1 Rotor shaft

[0071] 10 Worm Segments

[0072] 11 Axial end

[0073] 12Central Axis

[0074] 2 Anti-friction pads

[0075] 3 Shell

[0076] 30 transition surface

[0077] 31 First hole section

[0078] 32 Second hole section

[0079] 33 hole bottom

[0080] 4 Damping elements

[0081] 41 Edge

[0082] 410 first end face

[0083] 411 Free End

[0084] 42 middle part

[0085] 420 Second end face

[0086] 421 end

[0087] 422 The other end

[0088] 43 connection parts

[0089] 5 Worm gear

[0090] 6 rotors

[0091] 7. Stator

[0092] 8 Motor housing

Claims

1. An electric machine device for driving a movable component in a vehicle, characterized in that The motor device comprises: A rotor shaft (1), the rotor shaft (1) having a worm section (10); A friction reducing washer (2), the friction reducing washer (2) being adapted to contact an axial end (11) of the rotor shaft (1); A housing (3), the housing (3) comprising a first hole section (31) suitable for accommodating the friction-reducing pad (2) and a second hole section (32) axially adjacent to the first hole section (31), the diameter of the second hole section (32) being smaller than the diameter of the first hole section (31), a transition surface (30) from the first hole section (31) to the second hole section (32) being located on a side of the friction-reducing pad (2) facing away from the axial end (11), and the second hole section (32) being at least partially closed on a side facing away from the first hole section (31) and having a hole bottom surface (33); An integrated damping element (4) is suitable for damping the friction-reducing pad (2) and comprises a middle portion (42) overlapping the hole bottom surface (33) in axial projection and an edge portion (41) overlapping the transition surface (30) in axial projection, one end (421) of the middle portion (42) being supported on the hole bottom surface (33) and the other end (422) extending out of the second hole section (32) and facing the friction-reducing pad (2), and the edge portion (41) being located between the transition surface (30) and the friction-reducing pad (2).

2. The electric machine device for driving a movable component in a vehicle according to claim 1, characterized in that: The axial end (11) is the axial end (11) of the rotor shaft (1) adjacent to the worm section (10).

3. The motor device for driving a movable component in a vehicle according to claim 1 or 2, characterized in that: The edge portion (41) forms an annular flange of the damping element (4).

4. The motor device for driving a movable component in a vehicle according to claim 1 or 2, characterized in that: The damping element (4) is a soft damping element; the soft damping element is a rubber damping element.

5. The motor device for driving a movable component in a vehicle according to claim 1 or 2, characterized in that: When the damping element (4) is mounted on the housing (3) and is not compressed in the axial direction, the edge portion (41) is spaced apart from the transition surface (30) or abuts against the transition surface (30).

6. The motor device for driving a movable component in a vehicle according to claim 1 or 2, characterized in that: When the damping element (4) is installed on the housing (3) and is not compressed in the axial direction, a connection portion (43) between the edge portion (41) and the middle portion (42) is spaced apart from the transition surface (30).

7. The motor device for driving a movable component in a vehicle according to claim 1 or 2, characterized in that: When the damping element (4) is mounted on the housing (3) and is not compressed in the axial direction, the first end surface (410) of the edge portion (41) facing the friction reducing pad (2) is flush or retracted relative to the second end surface (420) of the middle portion (42) facing the friction reducing pad (2).

8. The motor device for driving a movable component in a vehicle according to claim 1 or 2, characterized in that: When the damping element (4) is mounted on the housing (3) and is not compressed in the axial direction, the middle portion (42) of the damping element (4) is in clearance fit with the second hole section (32), and / or the edge portion (41) of the damping element (4) is in clearance fit with the first hole section (31).

9. The motor device for driving a movable component in a vehicle according to claim 1 or 2, characterized in that: The motor device is configured as a window glass lifting drive device, a sliding sunroof drive device, a steering column adjustment drive device or a seat adjustment drive device; and / or The friction reducing pad (2) is a plastic pad; and / or The motor device is a DC motor device, and the rotor shaft (1) is an armature shaft.

10. The motor device for driving a movable component in a vehicle according to claim 1 or 2, characterized in that: The motor device comprises: a worm gear arrangement (5) adapted to be driven by a worm section (10) of the rotor shaft (1); and / or A rotor (6) carried by the rotor shaft (1) and a stator (7) matched with the rotor (6).

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