Gearbox shell, gearbox and vehicle

Abstract

The utility model belongs to the technical field of gearboxes, and discloses a gearbox shell, a gearbox and a vehicle, the gearbox shell comprises a main shell body, a first cavity, a second cavity and a penetrating hole are formed in the main shell body, the first cavity and the second cavity are arranged at an interval, the first cavity is used for installing a gear assembly, the second cavity is used for installing a motor, and lubricating oil is contained in the first cavity; the penetrating hole is communicated with the first cavity and the second cavity, the input shaft penetrates through the penetrating hole, and a vent hole communicated with the second cavity is formed in the main shell; the gearbox comprises the gearbox shell and further comprises a gear assembly, a motor and an input shaft, the gear assembly is arranged in the first cavity, and the motor is arranged in the second cavity. The vehicle comprises the gearbox and further comprises a chassis, and the gearbox is arranged in the chassis. According to the gearbox shell, it can be guaranteed that the pressure in a gearbox is kept stable, and lubricating oil in the gearbox is prevented from emitting out through the vent holes.

Description

Technical Field

[0001] This utility model relates to the field of gearbox technology, and in particular to a gearbox housing, a gearbox, and a vehicle. Background Technology

[0002] In related technologies, to maintain the internal pressure of the transmission at standard atmospheric pressure and prevent the formation of high internal pressure, vent holes are generally provided on the transmission housing to balance the air pressure inside and outside the transmission. Specifically, the internal cavity of the transmission generally contains lubricating oil to reliably and effectively lubricate the drive shaft, gear set, and other structures housed within the cavity. In some existing transmission housings, the vent holes are connected to the lubricating oil-containing cavity. This causes the lubricating oil to splash when the drive shaft rotates the gear set, resulting in some oil leaking out through the vent holes. Over time, this affects the reliability and effectiveness of lubrication, impacting the reliable operation of the transmission. Utility Model Content

[0003] The purpose of this utility model is to provide a gearbox housing, gearbox, and vehicle that can ensure stable internal pressure of the gearbox and prevent lubricating oil inside the gearbox from splashing and escaping through the vent.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] A gearbox housing includes a main housing, wherein the main housing has a first cavity, a second cavity, and a through hole; wherein...

[0006] The first cavity and the second cavity are spaced apart. The first cavity is used to install a gear assembly, and the second cavity is used to install a motor. The first cavity contains lubricating oil. The through hole connects the first cavity and the second cavity, and the input shaft passes through the through hole. The main housing has a vent hole that connects to the second cavity.

[0007] Preferably, a vent cap is provided on the vent hole.

[0008] Preferably, the inner peripheral wall of the vent hole is provided with an internal thread, and the vent cap is provided with a corresponding external thread. The vent cap and the vent hole are connected by the external thread and the internal thread.

[0009] Preferably, the outer wall of the main housing is provided with a groove, and the vent is opened at the bottom of the groove, the groove being used to accommodate the vent cap.

[0010] Preferably, the end of the vent facing the bottom of the settling tank is provided with a guide slope that is inclined away from the axis of the vent.

[0011] Preferably, the vent is located at the top of the main housing, and the axial direction of the vent is parallel to the radial direction of the through hole.

[0012] Preferably, the through hole is provided with a bearing, and the input shaft is rotatably connected to the through hole through the bearing.

[0013] Preferably, the through hole includes a first hole portion, a second hole portion, and a stepped end face. The first hole portion is connected to the first cavity, the second hole portion is connected to the second cavity, the diameter of the second hole portion is smaller than that of the first hole portion, the stepped end face is connected between the first hole portion and the second hole portion, and the bearing is disposed in the first hole portion and abuts against the stepped end face.

[0014] A transmission, comprising the transmission housing as described in any one of the preceding claims, further comprising:

[0015] A gear assembly is disposed within the first cavity;

[0016] The motor is located inside the second cavity;

[0017] An input shaft is provided, with the motor and gear assembly connected to its two ends respectively. The input shaft passes through the through hole and is rotatably connected to the through hole.

[0018] A vehicle includes the aforementioned transmission and a chassis, wherein the transmission is disposed within the chassis.

[0019] Beneficial effects:

[0020] The gearbox housing provided by this utility model has a first cavity and a second cavity for mounting a gear assembly and a motor, respectively. The first cavity contains lubricating oil for lubricating the gear assembly. A through hole is provided between the first and second cavities for the input shaft to pass through. By opening a vent in the second cavity, the vent allows external air to communicate with both the second and first cavities, thereby maintaining the internal pressure of the gearbox housing at standard atmospheric pressure and preventing the formation of internal high pressure. Furthermore, the vent in the second cavity is separated from the first cavity, thus preventing lubricating oil from splashing out through the vent and effectively preventing oil leakage. Attached Figure Description

[0021] Figure 1 This is a partial structural schematic diagram of the gearbox housing provided by this utility model;

[0022] Figure 2 This is a partial structural cross-sectional view of the gearbox provided by this utility model.

[0023] In the picture:

[0024] 1. Main shell; 11. First cavity; 12. Second cavity; 13. Through hole; 131. First hole section; 132. Second hole section; 133. Stepped end face; 14. Vent hole; 141. Guide slope; 15. Vent cap; 16. Settlement groove;

[0025] 2. Input shaft; 21. Bearing. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0027] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0029] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0030] This embodiment provides a gearbox housing. (Refer to...) Figures 1 to 2As shown, the gearbox housing includes a main housing 1, which has a first cavity 11, a second cavity 12, and a through hole 13. The first cavity 11 and the second cavity 12 are spaced apart. The first cavity 11 is used to install gear assemblies, and the second cavity 12 is used to install motors. The first cavity 11 contains lubricating oil. The through hole 13 connects the first cavity 11 and the second cavity 12. The input shaft passes through the through hole 13. The main housing 1 has a vent hole 14 that connects to the second cavity 12.

[0031] In this embodiment, the first cavity 11 and the second cavity 12 of the gearbox housing are respectively used to install the gear assembly and the motor. The first cavity 11 contains lubricating oil, and the gear assembly is partially immersed in the lubricating oil for lubrication. A through hole 13 is provided between the first cavity 11 and the second cavity 12 for the input shaft 2 to pass through. The input shaft 2 can pass from the first cavity 11 to the second cavity 12 through the through hole 13. By opening a vent hole 14 in the second cavity 12, the vent hole 14 can connect the external atmosphere with the second cavity 12 and the first cavity 11, thereby maintaining the pressure inside the gearbox housing at standard atmospheric pressure and preventing the formation of internal high pressure. Furthermore, the vent hole 14 in the second cavity 12 is separated from the first cavity 11, thereby preventing lubricating oil from splashing and being discharged through the vent hole 14, effectively preventing oil leakage.

[0032] In this embodiment, a vent cap 15 is provided on the vent hole 14. The vent cap 15, without affecting the communication between the inside of the gearbox housing and the external atmosphere, can partially block the vent hole 14, effectively preventing external impurities from entering the gearbox housing. The specific structure and venting principle of the vent cap 15 are existing technologies.

[0033] Specifically, the vent hole 14 has an internal thread on its inner peripheral wall, and the vent cap 15 has a corresponding external thread. The vent cap 15 and the vent hole 14 are connected by the external thread and the internal thread. When the vent cap 15 is screwed into the vent hole 14, a reliable and tight threaded connection is formed between the external thread and the internal thread, thereby reliably fixing the vent cap 15 to the vent hole 14.

[0034] This embodiment is not limited to this; the internal and external threads can also be omitted, and the vent cap 15 can be inserted into the vent hole 14 by interference fit, which can also achieve the fixation of the vent cap 15.

[0035] In some alternative embodiments, the vent cap 15 can also be integrally fitted onto the outside of the vent hole 14, and the main housing 1 forms a connector (not shown) on the outside of the vent hole 14. The vent hole 14 is opened on the connector, and the connector is provided with external threads. The vent cap 15 is fitted onto the connector and is provided with corresponding internal threads. Under this structural configuration, the vent cap 15 and the vent hole 14 can also be threadedly connected.

[0036] In this embodiment, a recessed groove 16 is formed on the outer wall of the main housing 1, and a vent hole 14 is formed at the bottom of the recessed groove 16. The recessed groove 16 is used to accommodate the vent cap 15. The recessed groove 16 can accommodate the main body of the vent cap 15 after it is installed, preventing the vent cap 15 from protruding from the outer wall of the main housing 1, thus not affecting the installation of the main housing 1, and also providing a certain degree of protection for the vent cap 15.

[0037] In this embodiment, the end of the vent hole 14 facing the bottom of the settling tank 16 is provided with a guide slope 141 that is inclined away from the axis of the vent hole 14. Specifically, the guide slope 141 is inclined outward in the direction away from the axis of the vent hole 14. When installing the vent cap 15, the guide slope 141 can effectively guide the vent cap 15, so that the vent cap 15 can be quickly and effectively aligned with the vent hole 14, which facilitates rapid positioning and installation.

[0038] In this embodiment, the vent 14 is located on the top of the main housing 1, and the axial direction of the vent 14 is parallel to the radial direction of the through hole 13. This arrangement allows the vent 14 to be located away from the lubricating oil, further preventing the lubricating oil from leaking out while being isolated from the first cavity 11.

[0039] In this embodiment, a bearing 21 is provided in the through hole 13, and the input shaft 2 is rotatably connected to the through hole 13 through the bearing 21. The bearing 21 can effectively support the input shaft 2 and enable the input shaft 2 to be rotatably connected to the through hole 13.

[0040] It is worth mentioning that the number of bearings 21 can be adjusted according to actual needs.

[0041] In this embodiment, the through hole 13 includes a first hole portion 131, a second hole portion 132, and a stepped end face 133. The first hole portion 131 connects to the first cavity 11, and the second hole portion 132 connects to the second cavity 12. The diameter of the second hole portion 132 is smaller than that of the first hole portion 131. The stepped end face 133 connects the first hole portion 131 and the second hole portion 132. The bearing 21 is disposed in the first hole portion 131 and abuts against the stepped end face 133. The arrangement of the first hole portion 131 and the second hole portion 132, that is, the through hole 13 is configured as a stepped hole, with the larger end of the stepped hole facing the first cavity 11. With this configuration, the stepped end face 133 between the first hole portion 131 and the second hole portion 132 abuts against the bearing 21, which can reliably limit the installation of the bearing 21 and ensure that the position of the bearing 21 can be reliably and stably maintained. On the other hand, the diameter of the second hole 132 facing the second cavity 12 is smaller than that of the first hole 131, which can also prevent the lubricating oil in the first cavity 11 from flowing through the bearing 21 into the second cavity 12, further reducing the possibility of lubricating oil escaping.

[0042] This embodiment also provides a gearbox. The gearbox includes the gearbox housing described above, and also includes a gear assembly, a motor, and an input shaft 2. The gear assembly is disposed in the first cavity 11, the motor is disposed in the second cavity 12, and the two ends of the input shaft 2 are respectively connected to the motor and the gear assembly. The input shaft 2 passes through a through hole 13 and is rotatably connected to the through hole 13.

[0043] This embodiment also provides a vehicle. The vehicle includes the aforementioned gearbox and a chassis, with the gearbox disposed within the chassis.

[0044] By installing the transmission housing provided in this embodiment on the vehicle and transmission, it can possess all the beneficial effects of a transmission housing, namely, the vent 14 connects the external atmosphere with the second chamber 12 and the first chamber 11, thereby maintaining the internal pressure of the transmission housing at standard atmospheric pressure and preventing the formation of internal high pressure. Furthermore, the vent 14 is located in the second chamber 12 and separated from the first chamber 11, thereby preventing lubricating oil from splashing out through the vent 14 and effectively preventing oil leakage.

[0045] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A gearbox housing, characterized in that, The main housing (1) includes a first cavity (11), a second cavity (12), and a through hole (13) within it; wherein, The first cavity (11) and the second cavity (12) are spaced apart. The first cavity (11) is used to install a gear assembly, and the second cavity (12) is used to install a motor. The first cavity (11) contains lubricating oil. The through hole (13) connects the first cavity (11) and the second cavity (12). The input shaft (2) passes through the through hole (13). The main housing (1) has a vent hole (14) that connects to the second cavity (12).

2. The gearbox housing according to claim 1, characterized in that, A vent cap (15) is provided on the vent (14).

3. The gearbox housing according to claim 2, characterized in that, The vent hole (14) has an internal thread on its inner peripheral wall, and the vent cap (15) has an external thread. The vent cap (15) and the vent hole (14) are connected by the external thread and the internal thread.

4. The gearbox housing according to claim 2, characterized in that, The outer wall of the main housing (1) is provided with a groove (16), and the vent (14) is provided at the bottom of the groove (16). The groove (16) is used to accommodate the vent cap (15).

5. The gearbox housing according to claim 4, characterized in that, The vent (14) has a guide slope (141) at one end facing the bottom of the settling tank (16) that is inclined away from the axis of the vent (14).

6. The gearbox housing according to claim 1, characterized in that, The vent (14) is located on the top of the main housing (1), and the axial direction of the vent (14) is parallel to the radial direction of the through hole (13).

7. The gearbox housing according to claim 1, characterized in that, The through hole (13) is provided with a bearing (21), and the input shaft (2) is rotatably connected to the through hole (13) through the bearing (21).

8. The gearbox housing according to claim 7, characterized in that, The through hole (13) includes a first hole (131), a second hole (132), and a stepped end face (133). The first hole (131) is connected to the first cavity (11), and the second hole (132) is connected to the second cavity (12). The diameter of the second hole (132) is smaller than that of the first hole (131). The stepped end face (133) is connected between the first hole (131) and the second hole (132). The bearing (21) is disposed in the first hole (131) and abuts against the stepped end face (133).

9. A gearbox, characterized in that, Including the gearbox housing as described in any one of claims 1-8, further comprising: The gear assembly is disposed in the first cavity (11); The motor is located inside the second cavity (12); An input shaft (2) is provided, with the motor and the gear assembly connected to its two ends respectively. The input shaft (2) passes through the through hole (13) and is rotatably connected to the through hole (13).

10. A vehicle, characterized in that, The system includes the gearbox as described in claim 9, and also includes a chassis, wherein the gearbox is disposed within the chassis.

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