Flywheel housing and engine

Abstract

The utility model relates to the technical field of engines, and discloses a flywheel casing and an engine, the flywheel casing comprises a body, the body comprises a top plate and a side coaming surrounding the edge of the top plate, and the top plate is provided with an oil seal hole; a first necking opening is formed in the end, opposite to the top plate, of the side surrounding plate, and a second necking opening is formed in the side, facing the top plate, of the first necking opening in the side surrounding plate. The inner diameters and the outer diameters of the first necking opening and the second necking opening are gradually reduced in the direction from the first necking opening to the top plate. The weight of the engine can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of engines, in particular to a flywheel housing and an engine. Background Art

[0002] The flywheel housing is a key engine component. Specifically, it's installed between the engine and transmission, serving as the primary connection between the transmission and the engine. With the advancement of automotive technology, engines are becoming increasingly lightweight, requiring the flywheel housing to be as lightweight as possible. Utility Model Content

[0003] The utility model provides a flywheel housing and an engine, which are used to achieve lightweighting of the flywheel housing.

[0004] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions:

[0005] A flywheel housing includes a flywheel housing body, the flywheel housing body includes a top plate and a side panel arranged around the edge of the top plate, wherein the top plate is provided with an oil seal hole; a first constriction is formed at the end of the side panel opposite to the top plate, and a second constriction is formed on the side of the side panel facing the top plate, and along the direction from the first constriction to the top plate, the inner diameter and outer diameter of the first constriction and the second constriction gradually decrease. In this solution, the provision of the first constriction and the second constriction makes the diameter of the space used to accommodate the flywheel in the flywheel housing smaller. Compared with the case in the related art where the side panels of the flywheel housing are cylindrical with equal diameter, the area of ​​the side panels of the flywheel housing can be reduced, thereby reducing the weight of the flywheel housing under the condition that the wall thickness of the flywheel housing is the same, so that the flywheel housing better meets the current demand for lightweighting.

[0006] Optionally, the surface of the top plate facing the side panel includes an oil seal mounting end surface located outside the oil seal hole, the oil seal mounting end surface is annular, and an outer edge of the oil seal mounting end surface has a notch.

[0007] Optionally, at least one weight-reducing groove is formed on the oil seal mounting end surface, and a depth of the weight-reducing groove is smaller than a thickness of a portion of the top plate where the oil seal mounting end surface is located.

[0008] Optionally, a first annular reinforcement rib is provided at the junction of the side panel and the top panel.

[0009] Optionally, a plurality of second reinforcing ribs are provided on the side panel, and each of the second reinforcing ribs extends from an end of the side panel opposite to the top panel to the first reinforcing rib and is connected to the first reinforcing rib.

[0010] Optionally, a plurality of the second reinforcing ribs are evenly distributed in the circumferential direction of the side panel.

[0011] Optionally, a plurality of third reinforcing ribs are provided on the side panel, and each of the third reinforcing ribs extends from the second necking toward one end of the top plate to the first reinforcing rib and is connected to the first reinforcing rib.

[0012] Optionally, the plurality of third reinforcing ribs are evenly distributed in the circumferential direction of the side panel.

[0013] Optionally, the side wall of the oil seal hole protrudes from the surface of the top plate opposite to the side panel;

[0014] A plurality of fourth reinforcing ribs are provided on the surface of the top plate opposite to the side panels, the plurality of fourth reinforcing ribs are all connected to the side walls of the oil seal hole, and the plurality of fourth reinforcing ribs radiate around the center of the oil seal hole.

[0015] The utility model also provides an engine, which includes any one of the flywheel housings provided in the above technical solutions, and thus can at least achieve the technical effect that can be achieved by the above flywheel housings, that is, achieve weight reduction of the flywheel housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the three-dimensional structure of a flywheel housing provided in an embodiment of the utility model;

[0017] Figure 2 for Figure 1 A cross-sectional view of the flywheel housing shown;

[0018] Figure 3 for Figure 2 A magnified view of point A;

[0019] Figure 4 A schematic diagram of the three-dimensional structure of a flywheel housing provided in an embodiment of the utility model;

[0020] Figure 5 for Figure 4 Enlarged view of point B;

[0021] Figure 6 A schematic diagram of the three-dimensional structure of a flywheel housing provided in an embodiment of the utility model;

[0022] Figure 7 for Figure 6 B is a partial enlarged view of .

[0023] Icons: 1-flywheel housing body; 11-top plate; 111-oil seal hole; 112-oil seal mounting end face; 1121-weight-reducing groove; 1122-notch; 12-side panel; 121-first constriction; 122-second constriction; 2-first reinforcement rib; 3-second reinforcement rib; 4-third reinforcement rib; 5-fourth reinforcement rib. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] The accommodating cavity formed by the flywheel housing can be divided into a first portion and a second portion arranged along the direction from the side panels to the top panel. The first portion is connected to the second portion and is used to connect to the transmission, while the second portion is the flywheel cavity for accommodating the flywheel. The diameter of the space required to accommodate the flywheel is smaller than the diameter required at the end of the flywheel housing for connecting to the transmission. In related art, the side panels of the flywheel housing are cylindrical with a constant diameter. That is, the outer diameter of the flywheel housing is greater than or equal to the diameter required at the end of the flywheel housing for connecting to the transmission, which makes the flywheel housing heavier.

[0026] Figure 1 A schematic diagram of the three-dimensional structure of a flywheel housing provided in an embodiment of the present application is shown. Figure 2 for Figure 1 The cross-sectional view of the flywheel housing is shown in FIG. Figure 1 and Figure 2 As shown, a flywheel housing provided in an embodiment of the present application includes a flywheel housing body 1, which includes a top plate 11 and a side panel 12 disposed around the edge of the top plate 11, wherein the top plate 11 is provided with an oil seal hole 111. Furthermore, a first constriction 121 is formed on the end of the side panel 12 opposite the top plate 11, and a second constriction 122 is formed on the side of the side panel 12 facing the top plate 11. The inner and outer diameters of the first and second constrictions 121, 122 gradually decrease along the direction from the first constriction 121 to the top plate 11. In this solution, by setting the first constriction 121 and the second constriction 122, the diameter of the space of the flywheel housing used to accommodate the flywheel is made smaller. Compared with the situation in the related art where the side panel 12 of the flywheel housing is a cylindrical shape with equal diameter, the area of ​​the side panel 12 of the flywheel housing can be reduced, thereby reducing the weight of the flywheel housing under the condition that the wall thickness of the flywheel housing is the same, so that the flywheel housing can better meet the current lightweight requirements.

[0027] It is easy to understand that the diameter of the space of the flywheel housing for accommodating the flywheel is determined according to the flywheel and the ring gear.

[0028] Figure 3 for Figure 2 The enlarged view of point A is as follows: Figure 3As shown in the figure, in one possible implementation, the surface of the top plate 11 facing the side panel 12 includes an oil seal mounting end surface 112 located outside the oil seal hole 111. The oil seal mounting end surface 112 is annular, and the outer edge of the oil seal mounting end surface 112 has a notch 1122. The provision of notch 1122 makes the outer edge of the oil seal mounting end surface 112 a discontinuous circular shape, thereby reducing stress concentration caused by machining sharp edges.

[0029] Figure 4 This is a schematic diagram of the three-dimensional structure of a flywheel housing. Figure 5 for Figure 4 The enlarged view of point B. Figure 4 and Figure 5 As shown, in one possible implementation, the oil seal mounting end surface 112 is formed with at least one weight-reducing groove 1121 to further reduce the weight of the flywheel housing. Furthermore, the provision of the weight-reducing groove 1121 prevents excessive thickness in the area of ​​the top plate 11 where the oil seal mounting end surface 112 is located, thereby preventing casting defects caused by poor heat dissipation in localized areas of the top plate 11. It is readily understood that the depth of the weight-reducing groove 1121 is less than the thickness of the area of ​​the top plate 11 where the oil seal mounting end surface 112 is located.

[0030] Illustratively, the oil seal mounting end surface 112 is formed with a plurality of weight-reducing grooves 1121 spaced apart from each other.

[0031] Please continue to refer to Figure 4 and Figure 5 In specific implementation, the weight-reducing groove 1121 may be located at the edge of the oil seal mounting end surface 112. Of course, in other embodiments, such as Figure 6 and Figure 7 As shown, the weight-reducing groove 1121 may also be at a certain distance from both the inner and outer edges of the oil seal mounting end surface 112 .

[0032] In one possible implementation, a first annular reinforcing rib 2 is provided at the junction of the side panel 12 and the top panel 11 to prevent cracks from occurring there, thereby reinforcing the area and increasing the rigidity of the flywheel.

[0033] In one possible implementation, a plurality of second reinforcing ribs 3 are provided on the side panel 12, and each second reinforcing rib 3 extends from the end of the side panel 12 opposite to the top plate 11 to the first reinforcing rib 2 and is connected to the first reinforcing rib 2 to strengthen the rigidity of the side panel 12 and the connection strength between the side panel 12 and the top plate 11, thereby increasing the rigidity of the flywheel housing.

[0034] Exemplarily, the plurality of second reinforcing ribs 3 are evenly distributed in the circumferential direction of the side panel 12 .

[0035] In one possible implementation, multiple third reinforcing ribs 4 are provided on the side panel 12. Each third reinforcing rib 4 extends from the second constriction 122 toward one end of the top panel 11 to the first reinforcing rib 2 and connects to the first reinforcing rib 2. This reinforces the rigidity of the second constriction 122 and the first reinforcing rib 2 on the side panel 12, and further strengthens the rigidity of the side panel 12, thereby increasing the rigidity of the flywheel housing. For example, the multiple third reinforcing ribs 4 are evenly distributed around the circumference of the side panel 12.

[0036] In one possible implementation, the side wall of the oil seal hole 111 protrudes from the surface opposite to the top plate 11 and the side panel 12. The surface opposite to the top plate 11 and the side panel 12 is provided with a plurality of fourth reinforcing ribs 5. The plurality of fourth reinforcing ribs 5 are all connected to the side wall of the oil seal hole 111, and the plurality of fourth reinforcing ribs 5 radiate to the surrounding areas with the center of the oil seal hole 111 as the center, thereby increasing the stiffness of the flywheel housing top plate 11 and thereby increasing the stiffness of the flywheel housing.

[0037] This embodiment also provides an engine, which includes the above-mentioned flywheel housing, and thus can at least achieve the technical effect that can be achieved by the above-mentioned flywheel housing, that is, to achieve weight reduction of the flywheel housing.

[0038] Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.

Claims

1. A flywheel housing, characterized in that: The flywheel housing comprises a body, the body comprising a top plate and a side panel surrounding an edge of the top plate, wherein the top plate is provided with an oil seal hole; a first constriction is formed on an end of the side panel opposite to the top plate, and a second constriction is formed on a side of the side panel facing the top plate from the first constriction; Along the direction in which the first constriction points toward the top plate, the inner diameter and the outer diameter of the first constriction and the second constriction gradually decrease.

2. The flywheel housing according to claim 1, characterized in that The surface of the top plate facing the side panel includes an oil seal mounting end surface located at the periphery of the oil seal hole. The oil seal mounting end surface is annular, and an outer edge of the oil seal mounting end surface has a notch.

3. The flywheel housing according to claim 2, characterized in that: At least one weight-reducing groove is formed on the oil seal mounting end surface, and the depth of the weight-reducing groove is smaller than the thickness of the portion of the top plate where the oil seal mounting end surface is located.

4. The flywheel housing according to claim 1, characterized in that An annular first reinforcing rib is provided at the junction of the side panel and the top panel.

5. The flywheel housing according to claim 4, characterized in that: The side panel is provided with a plurality of second reinforcing ribs, and each of the second reinforcing ribs extends from an end of the side panel opposite to the top panel to the first reinforcing rib and is connected to the first reinforcing rib.

6. The flywheel housing according to claim 5, characterized in that The plurality of second reinforcing ribs are evenly distributed in the circumferential direction of the side panel.

7. The flywheel housing according to claim 5, characterized in that A plurality of third reinforcing ribs are provided on the side panel, and each of the third reinforcing ribs extends from the second necking toward one end of the top plate to the first reinforcing rib and is connected to the first reinforcing rib.

8. The flywheel housing according to claim 7, characterized in that: The plurality of third reinforcing ribs are evenly distributed in the circumferential direction of the side panel.

9. The flywheel housing according to any one of claims 1 to 8, characterized in that: The side wall of the oil seal hole protrudes from the surface of the top plate opposite to the side panel; A plurality of fourth reinforcing ribs are provided on the surface of the top plate opposite to the side panels, the plurality of fourth reinforcing ribs are all connected to the side walls of the oil seal hole, and the plurality of fourth reinforcing ribs radiate around the center of the oil seal hole.

10. An engine, characterized in that: The flywheel housing comprises the flywheel housing according to any one of claims 1 to 9.

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