Bearing mounting structure and side door driving device with same

Abstract

The utility model provides a bearing mounting structure and a side door driving device with the bearing mounting structure, which are used for mounting a bearing between a shaft member and a radial support member, the radial support member comprises a first wall with a hole, an inner ring of the bearing is fixed on the shaft member, an outer ring of the bearing is fixed at the hole, and the first wall is provided with a second wall. The bearing mounting structure includes: a first mounting member provided on one side of the first wall in an axial direction of the shaft member; and the second mounting component is arranged on the other side of the first wall in the axial direction of the shaft component, and the second mounting component and the first mounting component are fixedly connected through a fastener and clamp the outer ring of the bearing. According to the transmission device, the first mounting component and the second mounting component are fixed to clamp the side wall of the shell component and the outer ring of the bearing, so that high axial force of the main shaft is transferred to the first mounting component through the bearing, the shell component is prevented from being subjected to the high axial force from the main shaft, and then the shell component is prevented from being damaged in the operation process of the transmission device.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle doors, and in particular to a bearing installation structure and a side door driving device having the same. Background Art

[0002] The vehicle includes a plurality of side doors. In conventional vehicles, the side doors are opened and closed manually. With the development of vehicle intelligence and electrification, there have been schemes to use power devices to realize automatic opening or closing of side doors. One known structure is to use a motor to drive a lead screw nut mechanism through a gear transmission device, and the nut drives the door push rod to move so as to realize the opening and closing of the door.

[0003] In the above scheme, the worm is generally driven to rotate by a motor, and the worm in turn drives the worm wheel to rotate. The worm is fixedly connected to the lead screw so that the two rotate synchronously, thereby causing the lead screw to drive the nut to rotate, and then the nut drives the push rod to move. One end of the lead screw is supported in the housing by a bearing. In order to reduce weight, the housing is generally supported by plastic. During the operation of the side door drive device, since the lead screw itself does not move but drives the components on it to move, the lead screw is subjected to a large axial force, and this axial force will be transmitted to the bearing and then to the housing. As the side door drive device operates, the housing may be deformed or even damaged after being subjected to axial force for a long time. Utility Model Content

[0004] The purpose of the present invention is to solve at least one of the above problems and / or other problems existing in the prior art.

[0005] To achieve the above object, the utility model provides a bearing installation structure, which is used to install a bearing between a shaft member and a radial support member, wherein the radial support member includes a first wall having a hole, the inner ring of the bearing is fixed to the shaft member, and the outer ring of the bearing is fixed to the hole, and the bearing installation structure includes:

[0006] a first mounting member disposed on one side of the first wall in the axial direction of the shaft member; and

[0007] A second mounting member is disposed on the other side of the first wall in the axial direction of the shaft member, and the second mounting member and the first mounting member are fixedly connected to each other through fasteners and clamp the outer ring of the bearing.

[0008] According to an improvement of the present invention, the first mounting member is plate-shaped and made of metal.

[0009] According to an improvement of the present invention, the second mounting component is made of metal.

[0010] According to an improvement of the present invention, an intermediate component is provided between the second mounting member and the first wall.

[0011] According to an improvement of the utility model, the inner ring of the bearing is limited by a stop structure located on the shaft component, and a limiting component is arranged between the inner ring and one of the stop structures.

[0012] According to an improvement of the utility model, the number of the fasteners is 3 and they are evenly distributed in the circumferential direction.

[0013] The utility model also provides a side door driving device, which comprises the above-mentioned bearing installation structure.

[0014] According to an improvement of the utility model, it includes a shell component, the shell component includes the first wall and a second wall parallel to the first wall, and the first mounting component is located between the first wall and the second wall.

[0015] According to an improvement of the present invention, the second mounting component closes the housing component from one side.

[0016] According to an improvement of the utility model, the second mounting member is fixed to the side door and is provided with a hole for the door push rod to pass through.

[0017] From the above, it can be seen that the utility model proposes a bearing mounting structure and a side door drive device having such a bearing mounting structure, which fixes and clamps the side wall of the shell component and the outer ring of the bearing through the first mounting component and the second mounting component, so that the high axial force of the main shaft is transferred to the first mounting component via the bearing, thereby preventing the shell component from being subjected to the high axial force from the main shaft, and further preventing the shell component from being damaged during the operation of the transmission device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The features and advantages of the present invention will be clearly understood through the detailed description provided below with reference to the accompanying drawings. It should be understood that the following drawings are merely schematic and not necessarily drawn to scale, and thus cannot be regarded as limiting the present invention, wherein:

[0019] Figure 1 An external schematic diagram of a side door driving device according to an embodiment of the utility model is shown.

[0020] Figure 2 A partial schematic diagram of a side door driving device according to an embodiment of the utility model is shown.

[0021] Figure 3 A schematic diagram of a bearing installation structure according to an embodiment of the utility model is shown.

[0022] Figure 4A partial cross-sectional view of a bearing mounting structure according to an embodiment of the utility model is shown.

[0023] Figure 5 An exploded view of a bearing mounting structure according to an embodiment of the present invention is shown.

[0024] Figure 6 A schematic diagram showing some components of a bearing mounting structure according to an embodiment of the utility model.

[0025] Figure 7 Another exploded view of a bearing mounting structure according to an embodiment of the present invention is shown.

[0026] Figure 8 A schematic diagram showing another angle of a bearing mounting structure according to an embodiment of the utility model. DETAILED DESCRIPTION

[0027] Embodiments of the present invention are described below with reference to the accompanying drawings. In the following description, many specific details are set forth so that those skilled in the art can more fully understand and implement the present invention. However, it is obvious to those skilled in the art that the implementation of the present invention may not have some of these specific details. In addition, it should be understood that the present invention is not limited to the specific embodiments described. On the contrary, any combination of the features and elements described below may be considered to implement the present invention, regardless of whether they relate to different embodiments. Therefore, the following aspects, features, embodiments and advantages are for illustrative purposes only and should not be regarded as elements or limitations of the claims unless clearly stated in the claims.

[0028] In the following, terms such as "first", "second", etc. are used to describe the elements of the present application. These terms are only used to distinguish the various elements, and are not used to limit the nature, order or number of these elements. The terms "including" and "having" are used to express an open-ended inclusive meaning, and mean that there may be additional elements / components in addition to the listed elements / components.

[0029] Figure 1 An external schematic diagram of a side door driving device according to an embodiment of the utility model is shown. Figure 2 FIG. 2 is a partial schematic diagram of a side door driving device according to an embodiment of the present utility model. Figure 1 and Figure 2As shown, the side door drive device includes a housing member 1, a transmission assembly arranged in the housing member 1 and composed of a worm wheel 2 and a worm (not shown). The worm is driven by a power source such as a motor 9, is arranged on one side of the worm wheel 2 and meshes with the worm wheel 2, and the worm wheel 2 is fixedly connected to the shaft member 3 in its radial inner part, so that the two can rotate synchronously. The shaft member 3 is arranged in the form of a screw shaft, and an external thread is arranged on it so as to be connected with the nut member. Those skilled in the art know that the worm wheel 2 can also be arranged as a helical gear.

[0030] Figure 3 A schematic diagram of a bearing installation structure according to an embodiment of the utility model is shown. Figure 4 A partial cross-sectional view of a bearing mounting structure according to an embodiment of the present invention is shown. Figures 1 to 4 It can be seen that the housing member 1 forms an inner cavity, in which the various components described above are at least partially arranged. Figure 1 As shown, the motor 9 can be arranged outside the housing assembly 1. As a specific embodiment, see Figure 4 The housing member 1 may include a first wall 1a perpendicular to the shaft member 3 and a side wall extending parallel to the axial direction of the shaft member 3. A hole is provided on the first wall 1a, and one end of the shaft member 3 is supported at the hole of the first wall through a bearing 4. The outer ring of the bearing 4 is fixedly connected to the first wall 1a, for example, by interference fit, and the inner ring of the bearing 4 is fixedly connected to the shaft member 3, so that the shaft member 3 can be rotatably supported on the housing member 1. The side wall of the housing member 1 can play a role in dustproofing and waterproofing for the transmission assembly arranged inside the housing member 1.

[0031] As the shaft member 3 rotates with the worm gear 2, it is necessary to drive the nut thereon and then drive the push rod fixedly connected to the nut to move to open and close the door, which will generate force along the axis of the shaft member 3. In order to reduce the force of the axial force on the housing, as an important improvement of the utility model, in the scheme of the utility model, a first mounting member 5 and a second mounting member 6 are provided. The first mounting member 5 can be arranged on one side of the first wall 1a, for example, between the first wall 1a and the worm gear 2. The first mounting member 5 is preferably in the shape of a plate, and a hole corresponding to the hole is provided thereon for the shaft member 3 to pass through. The material of the first mounting member 5 is selected from a material having a strength higher than that of the first wall. Generally speaking, in order to reduce weight, the housing member 1 including its first wall is made of plastic. Accordingly, the first mounting member 5 can be made of metal, for example, steel.

[0032] The second mounting member 6 is disposed on the other side of the first wall of the housing member 1, so that the first wall 1a is located between the first mounting member 5 and the second mounting member 6. Figure 2 and Figure 3It can be seen that the first mounting member 5 and the second mounting member 6 are fixedly connected by the fastener 7, and can tightly clamp the first wall 11 of the shell member 1. The second mounting member 6 is also preferably made of metal, for example, steel or other materials with high strength. The second mounting member 6 also serves as an end cover of the shell member 1.

[0033] As a specific embodiment, the number of fasteners 7 is 3, and they are preferably evenly spaced from each other in the circumferential direction. Accordingly, corresponding holes are formed in the first mounting member 5 and the second mounting member 6.

[0034] Preferably, if Figure 4 As shown, the first mounting member 5 and the second mounting member 6 respectively overlap with the outer ring of the bearing 4 in the axial direction, so that the outer ring of the bearing 4 can be clamped while the housing member 1 is tightly clamped. In this way, the high axial force caused by the rotation of the shaft member 3 can be transmitted to the first mounting member 5 and / or the second mounting member 6 via the bearing 4. Compared with the setting method of directly abutting the outer ring of the bearing 4 against the housing with lower strength in the prior art, the utility model adds the first mounting member 5 and the second mounting member 6 with higher strength, so that the axial force on the shaft member 3 can be transmitted to the first mounting member 5 and / or the second mounting member 6 through the bearing 4, thereby reducing the force on the housing. Even if part of the axial force is transmitted to the housing member 1 via the first mounting member 5 and / or the second mounting member 6, the local load on the housing in the prior art can be greatly reduced.

[0035] According to an exemplary embodiment of the first mounting member 5, Figure 6 and Figure 8 As shown, the first mounting member 5 may be a substantially square plate-shaped structure with a hole in the middle for the shaft member 3 to pass through. At least a portion ( Figure 4 The outer periphery of the first mounting member 5 shown in FIG. 1 abuts against the first wall 1a, and the other part ( Figure 4 The inner periphery of the first mounting member 5 shown in FIG. 1 corresponds to the outer ring of the bearing 4, for example, abuts against the outer ring of the bearing 4, so that the first mounting member 5 is arranged as shown in FIG. Figure 4 When in the inner cavity of the housing member 1 as shown, it can abut against the first wall 1 a and the outer ring of the bearing 4 at the same time.

[0036] Continue to refer Figure 4As a preferred embodiment, the housing is provided with a second wall 1b on a side of the first mounting member 5 opposite to the first wall 1a. The second wall 1b is extended and protrudes toward the inner side of the housing member 1, and a gap capable of accommodating the thickness of the first mounting member 5 is provided between the second wall 1b and the first wall 1a, so that when the first mounting member 5 is provided on the left side of the first wall 1a, the first mounting member 5 is limited in two axial directions by the cooperation between the second wall 1b and the first wall 1a.

[0037] Figure 4 Also shown are another bearing 12 for supporting the shaft member 3 and a sealing ring 13 for sealing the other bearing 12 .

[0038] Further, refer to Figure 4 As shown, in the axial direction, the inner ring of the bearing 4 is also stopped on both sides. Specifically, as an example, the inner ring of the bearing 4 is Figure 4 The left side of the shaft member 3 is stopped by a part of the member for mounting the worm wheel 2, and the right side is stopped by the limiting member 8. The shaft member 3 may be provided with a stopper at the end, which provides an axial force to the limiting member 8, so that the limiting member 8 can further provide axial limitation to the inner ring of the bearing 4. As a specific example, the stopper may be provided as a riveting feature, and the limiting member 8 is fixed by riveting to be pressed against the bearing 4.

[0039] As an improvement of the present invention, an intermediate component 64 is further provided between the second mounting member 6 and the housing member 1. The intermediate component has an annular body and three mounting portions extending from the body, so that when the fastener 7 connects the first mounting member 5 and the second mounting member 6, it is used as a sealing structure between the two.

[0040] In addition, if Figure 8 As shown, the second mounting member 6 can also be connected to the housing member 1 by other fasteners. In addition, the second mounting member 6 also mounts the entire side door drive device to a fixed part, such as a vehicle door, by other fasteners.

[0041] See also Figure 5 and Figure 8 A hole for the door push rod to pass through is also provided on the second mounting member 6. Preferably, in combination with Figure 2 The side door driving device is also provided with a guide rod 11. Accordingly, a hole for accommodating one end of the guide rod 11 is opened on the second mounting member 6.

[0042] The present invention is described above by taking the vehicle side door drive device as an example. However, the focus of the present invention is on the arrangement of the bearing, so the bearing installation structure described above can also be applied to other feasible uses as long as it includes a shaft and a bearing that need to withstand axial force.

[0043] For those skilled in the art, various modifications and variations may be made to the embodiments disclosed above without departing from the scope or spirit of the utility model. Other embodiments of the utility model will be apparent to those skilled in the art from the practice of the utility model disclosed in this specification. This specification and the examples disclosed therein should be considered to be illustrative only, and the true scope of the utility model is specified by the appended claims and their equivalents.

Claims

1. A bearing mounting structure, used for mounting a bearing (4) between a shaft member (3) and a radial support member, the radial support member comprising a first wall (1a) having a hole, the inner ring of the bearing (4) being fixed to the shaft member (3), the outer ring of the bearing (4) being fixed to the hole, characterized in that: The bearing mounting structure comprises: a first mounting member (5), the first mounting member (5) being arranged on one side of the first wall (1a) in the axial direction of the shaft member (3); and A second mounting member (6), the second mounting member (6) is arranged on the other side of the first wall (1a) in the axial direction of the shaft member (3), and the second mounting member (6) and the first mounting member (5) are fixedly connected and clamped to the outer ring of the bearing (4) by a fastener (7).

2. The bearing mounting structure according to claim 1, characterized in that: The first mounting member (5) is plate-shaped and made of metal.

3. The bearing mounting structure according to claim 2, characterized in that: The second mounting member (6) is made of metal.

4. The bearing mounting structure according to any one of claims 1 to 3, characterized in that: An intermediate component (64) is provided between the second mounting member (6) and the first wall (1a).

5. The bearing mounting structure according to any one of claims 1 to 3, characterized in that: The inner ring of the bearing (4) is limited by stop structures located on the shaft component (3), and a limiting component (8) is arranged between the inner ring and one of the stop structures.

6. The bearing mounting structure according to any one of claims 1 to 3, characterized in that: The number of the fasteners (7) is 3 and they are evenly distributed in the circumferential direction.

7. A side door driving device, characterized in that: It comprises a bearing mounting structure according to any one of claims 1-6.

8. The side door driving device according to claim 7, characterized in that: The invention comprises a shell component (1), wherein the shell component (1) comprises a first wall (1a) and a second wall (1b) parallel to the first wall (1a), and the first mounting component (5) is located between the first wall (1a) and the second wall (1b).

9. The side door driving device according to claim 8, characterized in that: The second mounting member (6) closes the housing member (1) from one side.

10. The side door driving device according to claim 9, characterized in that: The second mounting member (6) is fixed to the side door and is provided with a hole for the door push rod to pass through.

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