A reducer and drive assembly

Abstract

The utility model provides a kind of reducer and drive assembly, it is related to the technical field of reducer device.This scheme in the shell of its reducer is inclined in the preset angle range, outlet hole is always higher than the oil liquid upper surface in oil cavity, avoid outlet hole area and wire harness to be soaked by oil liquid long-term, eliminate the oil leakage hidden danger caused by oil liquid contact from spatial position layout;The design makes reducer can keep outlet hole higher than the position relation of oil liquid upper surface under the vehicle inclination posture, improve the sealing property and reliability of transmission system under complex working condition, realize the function of preventing leakage by the geometric relation optimization of outlet hole position, without additional complex components, simplify structure while reducing manufacturing cost, adapt to the design requirement of integrated, reliability of electric vehicle electric control differential lock.Its drive assembly includes above reducer, and has its corresponding all beneficial effects.

Description

Technical Field

[0001] This utility model relates to the field of speed reducer technology, and in particular to a speed reducer and drive assembly. Background Technology

[0002] With the development of electric vehicle technology, consumers have placed higher demands on driving performance, such as off-road capability. More and more models are integrating electronically controlled differential locks to achieve four-wheel drive. However, electronically controlled differential locks require the wiring harness to be led out from the reducer's oil chamber. If the wiring method is not properly implemented, it can lead to reducer lubricant leakage, causing the reducer to dry-grind and burn, resulting in the entire vehicle losing power. Utility Model Content

[0003] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a speed reducer and drive assembly to solve the related problems in the prior art.

[0004] To achieve the above and other related objectives, this utility model provides a speed reducer, arranged in a vehicle, comprising:

[0005] A housing and a differential lock disposed inside the housing;

[0006] An oil cavity for containing oil is formed inside the shell;

[0007] The housing is provided with a cable outlet hole, through which the connection harness of the differential lock extends to the outside of the housing;

[0008] When the housing is tilted at any angle within the preset angle range, the position of the outlet hole is always higher than the upper surface of the oil in the oil chamber, wherein the preset angle range represents the vehicle's ultimate attitude.

[0009] Furthermore, a main reduction gear is provided inside the housing, and the preset angle is the tilt angle of the central axis of the main reduction gear relative to the horizontal plane.

[0010] Furthermore, a sealing element is provided inside the outlet hole, and the sealing element is sealed and fitted to the outlet hole, through which the connecting wire harness passes.

[0011] Furthermore, the straight-line distance from the connection point of the differential lock and the connecting harness to the outlet hole is less than 30mm.

[0012] Furthermore, when the main reduction gear rotates, the direction in which the oil splashes is the direction of oil ejection, and the position of the outlet hole is set on the side away from the direction of oil ejection.

[0013] Furthermore, the axial direction of the outlet hole is not parallel to the oil throwing direction in space.

[0014] Furthermore, the axial direction of the outlet hole is set at a 90° angle to the oil-throwing direction in space.

[0015] Furthermore, the housing is equipped with a fixing component for positioning and fixing the connecting wire harness.

[0016] Furthermore, the interior of the housing is provided with a baffle plate, which surrounds the opening of the cable outlet to prevent oil from impacting the cable outlet.

[0017] This application also discloses a drive assembly that includes any of the reducers described above.

[0018] As described above, the reducer and drive assembly of this utility model have at least the following beneficial effects, including but not limited to:

[0019] In this design, when the reducer housing is tilted arbitrarily within a preset angle range, the cable outlet is always higher than the upper surface of the oil in the oil chamber, preventing the cable outlet area and wiring harness from being submerged in oil for extended periods. This spatial layout eliminates the risk of oil leakage due to oil contact. This design ensures that the reducer maintains the cable outlet's position above the oil surface when the vehicle is tilted, improving the sealing and reliability of the transmission system under complex operating conditions. Leakage prevention is achieved through geometric optimization of the cable outlet's position, eliminating the need for additional complex components, simplifying the structure, and reducing manufacturing costs. This design aligns with the integration and reliability requirements of electric vehicle electronically controlled differential locks. The drive assembly includes the reducer and possesses all its corresponding beneficial effects. Attached Figure Description

[0020] Figure 1 The diagram shown is a schematic representation of the overall structure of the reducer in this embodiment.

[0021] Figure 2 As shown in the embodiments of this application Figure 1 Sectional view at point A in the middle;

[0022] Figure 3 The diagram shown is a schematic of the reducer tilted at a preset angle in an embodiment of this application.

[0023] Figure 4 The diagram shows the position of the main reduction gear in an embodiment of this application.

[0024] Figure 5 As shown in the embodiments of this application Figure 4 Sectional view at point B.

[0025] Icons: 1. Housing, 2. Differential lock, 3. Cable outlet, 4. Connecting harness, 5. Main reduction gear, 6. Seal. Detailed Implementation

[0026] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, unless otherwise specified, the following embodiments and features described therein can be combined with each other.

[0027] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the illustrations only show the components related to the present invention and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0028] Please refer to Figures 1-3 This application discloses a speed reducer, arranged in a vehicle, including a housing 1 and a differential lock 2 disposed inside the housing 1; an oil cavity for containing oil is formed inside the housing 1; a cable outlet 3 is provided on the housing 1, and the connecting wire harness 4 of the differential lock 2 passes through the cable outlet 3 to the outside of the housing 1; when the housing 1 is tilted at any angle within a preset angle range, the position of the cable outlet 3 is always higher than the upper surface of the oil in the oil cavity, wherein the preset angle range represents the vehicle's overall extreme attitude.

[0029] It should be noted that the preset angle range represents the corresponding extreme posture of the vehicle, which refers to the extreme posture that the vehicle may exhibit during actual driving. This range is determined based on the vehicle's dynamic characteristics and road conditions, and is manifested as the tilt angle of the vehicle in a tilt state. Specifically, it refers to the phenomenon where, under conditions such as turning, the reducer housing 1 tilts synchronously with the vehicle body, and the oil in the oil chamber shifts to one side due to gravity, forming a tilted liquid surface. The differential lock 2 is an electronically controlled differential lock, and its specific installation location inside the housing 1 can be found in [reference needed]. Figure 2 In the specific design, the position of the cable outlet is optimized through the spatial geometry layout inside the reducer. The cable outlet is positioned in the high area of ​​the housing with sufficient safety margin. Combined with the dynamic changes of the oil level inside the housing under extreme vehicle postures, and with the support of multi-condition dynamic simulation and real vehicle testing, it is ensured that the height of the cable outlet is always higher than the oil surface at any tilt angle set by the housing.

[0030] It is worth noting that in this solution, when the housing 1 of the reducer is tilted arbitrarily within a preset angle range, the outlet hole 3 is always higher than the upper surface of the oil in the oil chamber, avoiding long-term immersion of the outlet hole 3 area and wiring harness in the oil, thus eliminating the risk of oil leakage caused by oil contact from a spatial layout perspective. This design enables the reducer to maintain the positional relationship of the outlet hole 3 being higher than the upper surface of the oil when the vehicle is tilted, improving the sealing and reliability of the transmission system under complex working conditions. The leakage prevention function is achieved by optimizing the geometric relationship of the outlet hole 3 position without the need for additional complex components, simplifying the structure and reducing manufacturing costs, and adapting to the design requirements of the electric differential lock 2 of electric vehicles for integration and reliability.

[0031] Please see Figure 4 and Figure 5 The housing 1 is equipped with a main reduction gear 5 inside, and the preset angle is the tilt angle of the central axis of the main reduction gear 5 relative to the horizontal plane.

[0032] Specifically, the main reduction gear 5 is connected to the housing of the differential lock 2 via a threaded component, and the two rotate synchronously. It should be noted that the connecting harness 4 is specifically connected to the electromagnetic coil on the differential lock 2. The electromagnetic coil is generally equipped with a stop characteristic, which cooperates with the reducer housing 1 to fix the electromagnetic coil and ensure that the connection position of the connecting harness 4 and the differential lock 2 will not rotate. The preset angle is defined as the tilt angle of the central axis of the main reduction gear 5 relative to the horizontal plane, which provides a clear mechanical reference for the tilt range of the housing 1. This allows the design of the cable outlet 3 to be standardized to adapt to the installation posture of the main reduction gear 5, ensuring that the cable outlet 3 is always higher than the oil level under the extreme posture of the whole vehicle, thus improving the standardization and universality of the structural design.

[0033] Please see Figure 2 The outlet hole 3 is provided with a sealing element 6, which is sealed and fitted to the outlet hole 3, and the connecting wire harness 4 passes through the sealing element 6.

[0034] Specifically, a sealing element 6 is installed inside the outlet hole 3 to seal against the hole wall. This seals the gap between the wire harness and the hole through physical contact, forming an additional leak-proof barrier to prevent oil from seeping out along the gap between the wire harness and the hole wall. This enhances the basic sealing performance, simplifies the structure, and improves sealing reliability. Optionally, the sealing element 6 can be made of rubber or other materials, and the corresponding structural form can meet the specific sealing requirements; no further restrictions are imposed here.

[0035] In some embodiments, the straight-line distance from the connection point of the differential lock 2 and the connecting harness 4 to the outlet hole 3 is less than 30mm.

[0036] It should be noted that, theoretically, the distance from the point where the differential lock 2 connects to the connecting harness 4 to the outlet hole 3 should be as small as possible. In practical applications, considering issues such as layout and assembly, the distance from the outlet hole 3 to the point where the differential lock 2 connects to the connecting harness 4 is limited to less than 30mm. This shortens the internal length of the harness, reduces the amplitude of the harness vibration caused by vehicle movement or housing 1 vibration, reduces the frictional loss of the harness, reduces the risk of oil leakage, and improves the stability of the harness system.

[0037] In some embodiments, when the main reduction gear 5 rotates, the direction in which the oil splashes is the direction of oil ejection, and the position of the outlet hole 3 is located on the side away from the direction of oil ejection.

[0038] Specifically, the outlet hole 3 is arranged on the side away from the direction of oil splashing of the main reduction gear 5, avoiding the main impact path of oil splashing when the main reduction gear 5 rotates, reducing the direct scouring of the connecting wire harness 4 and the seal 6 at the outlet hole 3 position by the oil, reducing the probability of deformation or failure of the seal 6 due to impact, and extending the service life of the seal 6.

[0039] In some embodiments, the axial direction of the outlet hole 3 is not parallel to the oil throwing direction in space.

[0040] Specifically, the axis of the outlet hole 3 is not parallel to the direction of oil splashing. By changing the direction of the wire harness outlet, the trajectory of oil splashing is spatially misaligned with the axis of the outlet hole 3, which further weakens the force of oil impacting the connecting wire harness 4 and the seal 6 at the outlet hole 3, and optimizes the anti-impact effect.

[0041] In some embodiments, the axis of the outlet hole 3 is set at a 90° angle to the oil splashing direction in space. This vertical arrangement ensures that the oil splashing direction is completely perpendicular to the axis of the outlet hole 3, minimizing the possibility of direct oil impact on the seal 6 and forming an optimal anti-impact structure that enhances sealing reliability. Simultaneously, the vertically positioned outlet hole 3 is easier to machine on the housing 1, saving on processing costs to some extent. In other embodiments, the corresponding angle can be adjusted to 45°, 60°, etc.

[0042] In some embodiments, the housing 1 is provided with a fixing member inside, which is used to position and fix the connecting wire harness 4.

[0043] Specifically, a wire harness fixing component is provided inside the housing 1. The wire harness can be fixed by means of a buckle, bracket or other structure, which can position and suppress the shaking and displacement of the wire harness inside the housing 1, prevent the wire harness from wearing the seal 6 or being pulled out of the wire hole 3 due to vibration, improve the mechanical stability of the wire harness system and indirectly enhance the sealing effect.

[0044] In some embodiments, the housing 1 is further provided with a baffle plate, which is arranged around the opening of the outlet hole 3 to prevent oil from impacting the outlet hole 3.

[0045] Specifically, a baffle structure is installed around the outlet hole 3 to form a physical barrier to prevent oil splashing. Even if oil breaks through the space, the baffle can intercept the impact, providing multiple layers of protection and further reducing the risk of oil leakage. During installation, the baffle structure can be fixed to the inside of the housing 1 using bolts or other connectors.

[0046] In summary, in this design, when the housing 1 of the reducer is tilted arbitrarily within a preset angle range, the outlet hole 3 is always higher than the upper surface of the oil in the oil chamber, preventing the area of ​​the outlet hole 3 and the wiring harness from being soaked in oil for a long time. This eliminates the risk of oil leakage caused by oil contact from a spatial layout perspective. This design enables the reducer to maintain the positional relationship of the outlet hole 3 being higher than the upper surface of the oil when the vehicle is tilted, improving the sealing and reliability of the transmission system under complex working conditions. The leakage prevention function is achieved by optimizing the geometric relationship of the outlet hole 3 position without the need for additional complex components, simplifying the structure and reducing manufacturing costs. This design meets the integration and reliability design requirements of the electric differential lock 2 for electric vehicles.

[0047] This application further discloses a drive assembly including the aforementioned reducer, possessing all its beneficial effects. It should be noted that this reducer can also be used in other drive function modules.

[0048] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

[0049] Throughout this description, numerous specific details, such as examples of components and / or methods, are provided to provide a complete understanding of embodiments of this application. However, those skilled in the art will recognize that embodiments of this invention may be practiced without one or more of these specific details or by other devices, systems, components, methods, parts, materials, components, etc. In other instances, well-known structures, materials, or operations have not been specifically shown or described in detail to avoid obscuring aspects of embodiments of this application.

[0050] Throughout this specification, references to "an embodiment," "an embodiment," or "a specific embodiment" mean that a particular feature, structure, or characteristic described in connection with an embodiment is included in at least one embodiment of the present invention, but not necessarily in all embodiments. Therefore, the various representations of the phrases "in one embodiment," "in an embodiment," or "in a specific embodiment" in different places throughout the specification do not necessarily refer to the same embodiment. Furthermore, a particular feature, structure, or characteristic of any specific embodiment of the present invention can be combined with one or more other embodiments in any suitable manner. It should be understood that other variations and modifications of the embodiments described herein may be based on the teachings herein and will be considered part of the spirit and scope of the present invention.

[0051] It should also be understood that one or more of the elements shown in the figures may be implemented in a more separate or more integrated manner, or may even be removed because they are inoperable in certain circumstances or provided because they may be useful for a particular application.

[0052] Furthermore, unless otherwise expressly stated, any arrows in the accompanying drawings should be considered illustrative only and not limiting. Additionally, unless otherwise stated, the term "or" as used herein is generally intended to mean "and / or". Where a term is anticipated to provide a separation or combination capability that is unclear, a combination of components or steps will also be considered as indicated.

[0053] As used herein and throughout the claims below, unless otherwise specified, “a” and “the” include the plural references. Similarly, as used herein and throughout the claims below, unless otherwise specified, “in” means “in” and “on”.

[0054] The above description of the embodiments shown in this utility model (including the content in the abstract of the specification) is not intended to be an exhaustive enumeration or to limit the utility model to the precise forms disclosed herein. Although specific embodiments and examples of the utility model have been described herein for illustrative purposes only, various equivalent modifications are possible within the spirit and scope of the utility model, as will be recognized and understood by those skilled in the art. As indicated, these modifications can be made to the utility model in accordance with the above description of the embodiments of this application, and such modifications will be within the spirit and scope of the utility model.

[0055] This document has generally described the systems and methods in detail to aid in understanding the present invention. Furthermore, various specific details have been set forth to provide a general understanding of the embodiments of this application. However, those skilled in the art will recognize that embodiments of the present invention can be practiced without one or more specific details, or using other devices, systems, accessories, methods, components, materials, parts, etc. In other instances, well-known structures, materials, and / or operations have not been specifically shown or described in detail to avoid obscuring various aspects of the embodiments of this application.

Claims

1. A speed reducer, disposed in a vehicle, characterized in that, include: A housing and a differential lock disposed inside the housing; An oil cavity for containing oil is formed inside the shell; The housing is provided with a cable outlet hole, through which the connection harness of the differential lock extends to the outside of the housing; When the housing is tilted at any angle within the preset angle range, the position of the outlet hole is always higher than the upper surface of the oil in the oil chamber, wherein the preset angle range represents the vehicle's ultimate attitude.

2. The speed reducer according to claim 1, characterized in that: The housing contains a main reduction gear, and the preset angle is the tilt angle of the central axis of the main reduction gear relative to the horizontal plane.

3. A speed reducer according to claim 1, characterized in that: A sealing element is provided inside the outlet hole, and the sealing element is sealed and fitted to the outlet hole. The connecting wire harness passes through the sealing element and exits.

4. A speed reducer according to claim 1, characterized in that: The straight-line distance from the connection point of the differential lock and the connecting harness to the outlet hole is less than 30mm.

5. A speed reducer according to claim 2, characterized in that: When the main reduction gear rotates, it causes the oil to splash in the direction of oil ejection, and the outlet hole is located on the side away from the direction of oil ejection.

6. A speed reducer according to claim 5, characterized in that: The axial direction of the outlet hole and the oil-throwing direction are arranged in a non-parallel, intersecting manner in space.

7. A speed reducer according to claim 6, characterized in that: The axial direction of the outlet hole is set at a 90° angle to the oil throwing direction in space.

8. A speed reducer according to claim 1, characterized in that: The housing is equipped with a fixing component for positioning and fixing the connecting wire harness.

9. A speed reducer according to claim 1, characterized in that: The housing is also provided with a baffle plate, which is arranged around the opening of the outlet hole to prevent oil from impacting the outlet hole.

10. A drive assembly, characterized in that, Includes the speed reducer as described in any one of claims 1-9.

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