Speed reducer shell, speed reducer, driving assembly and vehicle
By setting protective parts in the reducer housing to protect the oil drain hole, the problem of the screw plugs being easily damaged during transportation and storage of the reducer is solved, ensuring the sealing performance and normal operation of the reducer.
Patent Information
- Application Number
- CN202422053098.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-22
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-08-22
AI Technical Summary
During the transportation and storage of existing reducers, the screw plugs of the oil drain hole are easily damaged by external impact, which affects the sealing performance of the reducer and leads to oil leakage failure.
A reducer housing is designed, including a housing and a protective member, which is arranged along the outer edge of the external opening of the oil drain hole, which can block external objects during transportation and storage and protect the oil drain plug from impact.
Effectively prevent the oil drain plug from being damaged by impact, ensure the sealing performance of the reducer, and prevent oil leakage from failing.
Smart Images
Figure CN222977356U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of speed reducers, and particularly relates to a speed reducer housing, a speed reducer, a drive assembly and a vehicle. Background Art
[0002] After the speed reducer runs for a long time, a certain amount of iron filings will be generated, which will have a certain impact on the quality of the gear oil. An oil drain hole is provided below the speed reducer to facilitate the replacement of the gear oil.
[0003] After a plug is assembled in the oil drain hole, the plug may be impacted externally during transportation and storage, resulting in damage to the plug, thereby affecting the sealing performance of the speed reducer and causing oil leakage and failure of the speed reducer. Summary of the Utility Model
[0004] The technical problem to be solved by the utility model is: in view of the problem that the plug of the existing oil drain hole is impacted externally, affecting the sealing performance of the speed reducer, a speed reducer housing, a speed reducer, a drive assembly and a vehicle are provided.
[0005] To solve the above technical problem, on the one hand, an embodiment of the utility model provides a speed reducer housing, including a housing and a protective member;
[0006] An oil cavity is arranged in the housing. The housing has an outer surface, and an oil drain hole communicating with the oil cavity is arranged on the outer surface. The oil drain hole is adapted to install a detachable oil drain plug to open or close the oil drain hole;
[0007] The protective member is connected to the outer surface and is arranged along the outer edge of the external opening of the oil drain hole.
[0008] Optionally, the protective member surrounds the oil drain hole.
[0009] Optionally, the protective member is of an annular structure.
[0010] Optionally, a notch is arranged on the protective member, and the notch is used for the oil in the oil cavity to pass through when the oil drain hole is opened.
[0011] Optionally, in the up-down direction of the vehicle, the notch is arranged below the oil drain hole.
[0012] Optionally, a drainage member is further included. The drainage member is connected to the protective member and arranged in the notch to guide the oil when the oil flows out of the oil drain hole.
[0013] Optionally, one side of the drainage member close to the oil drain plug has a drainage surface, and the housing has an inner surface. The drainage surface is recessed along the axial direction of the oil drain hole towards the direction of the inner surface.
[0014] Optionally, the drainage member includes a drainage portion and a strengthening portion. Along the outer edge of the oil drain hole on the protective member, a first end portion and a second end portion are provided, and the notch is formed between the first end portion and the second end portion;
[0015] The first end of the drainage portion is disposed in the notch, the second end of the drainage portion extends out of the notch along the radial direction of the oil drain hole, and along the connection direction of the first end portion and the second end portion, the strengthening portion protrudes from the second end of the drainage portion.
[0016] Optionally, there are two strengthening portions, namely a first strengthening portion and a second strengthening portion. The second end of the drainage portion is connected between the first strengthening portion and the second strengthening portion along the connection direction of the first end portion and the second end portion. The first strengthening portion is connected to the first end portion, and the second strengthening portion is connected to the second end portion.
[0017] Optionally, an oil injection hole is formed on the housing. The oil injection hole is disposed at the top of the housing and is communicated with the oil chamber for injecting oil into the oil chamber.
[0018] Optionally, an output shaft hole is formed on the housing, and the output shaft hole is adapted to mount a wheel shaft;
[0019] The lowest point of the output shaft hole is located above the highest liquid level of the oil chamber.
[0020] Optionally, an overflow hole is formed on the housing, and the overflow hole is disposed close to the output shaft hole;
[0021] The overflow hole is circular, and the outer edge of the overflow hole is tangent to the highest liquid level in the oil chamber.
[0022] Optionally, the lowest liquid level of the oil chamber is not lower than the lowest point of the oil drain hole.
[0023] On the other hand, an embodiment of the present invention provides a speed reducer, including the speed reducer housing as described above.
[0024] On yet another aspect, an embodiment of the present invention provides a drive assembly, including the speed reducer as described above.
[0025] On yet another aspect, an embodiment of the present invention provides a vehicle, including the drive assembly as described above.
[0026] In the reducer housing provided by the embodiment of the present utility model, the protective member is arranged along the outer edge of the oil drain hole. When the oil drain plug is inserted into the oil drain hole, during transportation and storage, the protective member can block foreign objects, protecting the oil plug in the oil drain hole from being damaged by the impact of foreign objects, ensuring the sealing performance of the reducer, and effectively preventing the oil drain plug from being impacted and causing oil leakage failure. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] Figure 1 is a schematic diagram of a reducer housing provided by an embodiment of the present utility model;
[0028] Figure 2 is a schematic diagram of an oil drain hole provided by an embodiment of the present utility model;
[0029] Figure 3 is a cross-sectional schematic diagram of an oil drain hole provided by an embodiment of the present utility model.
[0030] The reference numerals in the specification are as follows:
[0031] 1. Housing; 11. Oil drain hole; 12. Oil injection hole; 13. Overflow hole; 14. Output shaft hole;
[0032] 2. Protective member; 21. Notch; 22. First end; 23. Second end;
[0033] 3. Drainage member; 31. Drainage part; 311. Drainage surface; 32. First strengthening part; 33. Second strengthening part. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0034] In order to make the technical problems, technical solutions and beneficial effects solved by the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.
[0035] As Figures 1 to 3 shown, a reducer housing provided by an embodiment of the present utility model includes a housing 1 and a protective member 2. An oil cavity is arranged inside the housing 1. The housing 1 has an outer surface, and an oil drain hole 11 is arranged on the outer surface. The oil cavity is arranged inside the housing 1 and communicates with the oil drain hole 11. An oil drain plug is detachably connected to the oil drain hole 11 to open or close the oil drain hole 11. When the oil drain plug is installed in the oil drain hole 11, it seals the oil cavity to prevent the oil in the oil cavity from leaking. In the up-and-down direction of the vehicle, the oil drain hole 11 is arranged at the bottom of the housing 1. After removing the oil drain plug, the oil drain hole 11 is opened, and the oil in the reducer can be drained, enabling the reducer to be refilled with oil.
[0036] The protective member 2 is connected to the outer surface of the housing 1, and the protective member 2 is arranged along the outer edge of the external opening of the oil drain hole 11, so that during transportation and storage, the protective member 2 can block foreign objects and protect the oil drain plug from being impacted by foreign objects, preventing breakage and ensuring the sealing performance of the speed reducer, effectively preventing the oil leakage failure caused by the breakage of the oil drain plug due to impact.
[0037] Among them, the protective member 2 is connected to the outer surface of the housing 1, and the protective member 2 protrudes axially from the oil drain plug at the oil drain hole 11, so as to achieve the purpose of the protective member 2 blocking foreign objects from colliding with the oil drain plug.
[0038] In one embodiment, the oil drain plug is a screw plug, an external thread is provided on the screw plug, an internal thread is provided on the inner wall surface of the oil drain hole 11, and the screw plug is detachably connected through the thread fit of the external thread and the internal thread.
[0039] In one embodiment, as Figure 2 shown, the protective member 2 is arranged around the oil drain hole 11, which can increase the protection effect on the oil drain plug and enhance the stability of the protective member 2 when being impacted.
[0040] Among them, the protective member 2 defines an accommodation space. The oil drain plug includes an oil drain plug head and an oil drain plug body. The oil drain plug head is connected to one end of the oil drain plug body, the oil drain plug body is connected in the oil drain hole 11, and the oil drain plug head is arranged in the accommodation space and abuts against the outer surface of the housing 1. The protective member 2 is arranged around the oil drain plug head, which can prevent the oil drain plug head from being impacted.
[0041] In one embodiment, as Figure 2 shown, the protective member 2 is of an annular structure, which can further increase the protection effect of the protective member 2. The oil drain plug head of the oil drain plug is located inside the ring, which can prevent the impact on the oil drain plug in all directions to the greatest extent.
[0042] In one embodiment, as Figure 1 、 Figure 2 shown, a notch 21 is provided on the protective member 2. The notch 21 is used for the oil in the oil supply cavity to pass through when the oil drain hole 11 is opened. When the oil drain hole 11 discharges oil, by providing the notch 21 on the protective member 2, during the maintenance of the speed reducer, the oil can flow out from the notch 21, preventing the oil from overflowing during the outflow process, reducing the work of cleaning the oil during the maintenance process, and improving the maintenance efficiency.
[0043] As an example, the protective member 2 is of an annular structure, and a notch 21 is provided on the protective member 2. Through this notch 21, when the oil drain hole 11 is opened, the oil all passes through the notch 21, preventing the oil from overflowing.
[0044] In one embodiment, in the vertical direction of the vehicle, the notch 21 is arranged below the oil drain hole 11, so that after the oil flows out of the oil drain hole 11, it can quickly flow out from the notch 21.
[0045] In one embodiment, as Figure 2 shown, the reducer housing further includes a drainage member 3. The drainage member 3 is connected to the protective member 2 and arranged in the notch 21 to guide the oil when the oil flows out of the oil drain hole 11. The protective member 2 protrudes axially along the oil drain hole 11 from the drainage member 3. The drainage member 3 drains the oil, so that the oil can flow along the drainage member 3 to the outside of the reducer. When using a container to catch the drained oil, the drainage member 3 facilitates the docking of the notch 21 and the container mouth, so that the oil can flow into the container as much as possible, reducing the situation of oil splashing.
[0046] In one embodiment, one side of the drainage member 3 close to the oil drain plug has a drainage surface 311. The housing has an inner surface, and the inner surface and the outer surface are oppositely arranged axially along the oil drain hole 11. The drainage surface 311 is recessed axially along the oil drain hole 11 towards the inner surface of the housing 1, so that the drainage surface 311 has a structure with a lower middle and higher sides. Through the drainage surface 311, the oil forms an agglomerating effect when flowing out of the notch 21, which can reduce oil splashing. At the same time, it also facilitates the docking of the notch 21 with a variety of different containers, so that the oil can smoothly enter the container and avoid oil spilling.
[0047] In one embodiment, as Figure 2 shown, the drainage member 3 includes a drainage part 31 and a strengthening part. The protective member 2 is provided with a first end 22 and a second end 23 along the outer edge of the oil drain hole 11. The notch 21 is formed between the first end 22 and the second end 23. The first end of the drainage part 31 is arranged in the notch 21, and the second end of the drainage part 31 extends radially out of the notch 21 along the oil drain hole 11. The drainage surface 311 is arranged on the drainage part 31. The protective member 2 protrudes axially from the drainage member 3 along the oil drain hole 11. The drainage part 31 can guide the oil.
[0048] Along the connection direction of the first end 22 and the second end 23, the strengthening part protrudes from the second end of the drainage part 31. The strengthening part is located outside the accommodation space defined by the protective member 2. Through the strengthening part, the connection strength between the drainage member 3 and the protective member 2 can be increased, preventing the drainage part 31 from detaching from the notch 21 when being impacted and affecting oil drainage.
[0049] In one embodiment, as Figure 2As shown, there are two strengthening parts, namely a first strengthening part 32 and a second strengthening part 33. The second end of the drainage part 31 is connected between the first strengthening part 32 and the second strengthening part 33 along the connection direction of the first end part 22 and the second end part 23. The first strengthening part 32 is connected to the first end part 22, and the second strengthening part 33 is connected to the second end part 23, which can enhance the connection strength between the two ends of the drainage part 31 and the protective part 2.
[0050] Axially, the length dimension of the drainage part 31 is smaller than that of the protective part 2, so that the first end of the drainage part 31 can play a role in drainage in the notch 21 and will not affect the size of the notch 21.
[0051] The protective part 2 has a first end part 22 and a second end part 23. The first end part 22 and the second end part 23 define a notch 21. The first strengthening part 32 and the second strengthening part 33 are oppositely arranged on the second end of the drainage part 31, so that the drainage part 3 is generally in a "convex" shape. Among them, the first strengthening part 32 is connected to the first end part 22, and the first strengthening part 32 can realize the connection between the second end of the drainage part 31 and the first end part 22. The second strengthening part 33 is connected to the second end part 23, and the second strengthening part 33 can realize the connection between the second end of the drainage part and the second end part 23. Thus, through the first strengthening part 32 and the second strengthening part 33, the connection strength between the drainage part 3 and the protective part 2 can be further ensured.
[0052] Preferably, the first strengthening part 32 and the second strengthening part 33 are symmetrically arranged with respect to the second end of the drainage part 31.
[0053] In one embodiment, as Figure 1 shown, an oil injection hole 12 is provided on the housing 1. The oil injection hole 12 is arranged at the top of the housing 1 and is communicated with the oil cavity. Oil can be injected into the oil cavity through the oil injection hole 12.
[0054] During maintenance, the oil in the oil cavity of the reducer is discharged through the oil drain hole 11 below the housing 1. Then, the oil drain hole 11 is closed, and liquid is injected through the oil injection hole 12 to realize the replacement of the oil in the reducer.
[0055] In one embodiment, as Figure 1 shown, an output shaft hole 14 and an overflow hole 13 are provided on the housing 1. The overflow hole 13 is arranged close to the output shaft hole 14 and is communicated with the oil cavity inside the reducer. The overflow hole 13 is circular, and the outer edge of the overflow hole 13 is tangent to the highest liquid level in the oil cavity. By arranging the overflow hole 13 at the highest liquid level, when injecting oil into the oil cavity inside the reducer, the oil higher than the highest liquid level will flow out from the overflow hole 13, so as to control the height of the oil liquid level in the reducer to meet the requirements and achieve the purpose of controlling the oil level.
[0056] In addition, the overflow hole can also be used to easily observe whether the oil is repeatedly added. Excessive oil filling will affect the transmission efficiency of the reducer and may also cause oil overflow, creating the illusion of oil leakage in the reducer.
[0057] The output shaft hole 14 is suitable for installing the wheel axle. The lowest point of the output shaft hole 14 is located above the highest liquid level in the oil chamber. An oil seal is installed at the output shaft hole 14. The oil seal sleeve is arranged on the outside of the wheel axle to seal between the reducer housing 1 and the wheel axle. By setting the output shaft hole 14 higher than the highest liquid level, the oil in the reducer cannot soak the oil seal, avoiding long-term immersion that affects the sealing performance of the oil seal.
[0058] In one embodiment, the lowest liquid level in the oil chamber is not lower than the lowest point of the oil drain hole 11, so that when draining the oil, the expired oil in the oil chamber can be fully discharged from the oil drain hole 11, preventing the expired oil from remaining in the oil chamber, ensuring the quality of the newly added oil, and effectively improving the reliability of the product.
[0059] In a specific embodiment, the oil drain hole 11 is circular, and the lowest liquid level in the oil chamber is located at the diameter of the oil drain hole 11 .
[0060] On the other hand, an embodiment of the utility model provides a reducer, comprising the reducer housing of the above embodiment, wherein an oil chamber is arranged inside the reducer housing, and the oil chamber is communicated with the oil drain hole 11 .
[0061] An escape space is provided inside the reducer, and the escape space is communicated with the oil filling hole 12. The limit of the escape space can prevent oil splashing during the oil filling process, and can rebound the splashed oil, thereby reducing the waste of oil.
[0062] On the other hand, an embodiment of the present invention provides a drive assembly, including the reducer of the above embodiment.
[0063] On the other hand, an embodiment of the present invention provides a vehicle, comprising the drive assembly of the above embodiment.
[0064] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A reducer housing, characterized in that: including a housing and a protective member; An oil cavity is arranged in the housing, and the housing has an outer surface, and an oil drain hole communicating with the oil cavity is arranged on the outer surface, and the oil drain hole is suitable for installing a detachable oil drain plug to open or close the oil drain hole; The protective member is connected to the outer surface and is arranged along the outer edge of the outer opening of the oil drain hole.
2. The reducer housing according to claim 1, characterized in that: The protective member is arranged around the oil drain hole.
3. The reducer housing according to claim 1, characterized in that: The protective element is an annular structure.
4. The reducer housing according to claim 1, characterized in that: The protective member is provided with a notch, and the notch is used for allowing the oil in the oil cavity to pass through when the oil drain hole is opened.
5. The reducer housing according to claim 4, characterized in that: In the up-down direction of the vehicle, the notch is arranged below the oil drain hole.
6. The reducer housing according to claim 4, characterized in that: It also includes a guide piece, which is connected to the protective piece and is arranged in the notch to guide the oil when it flows out of the oil drain hole.
7. The reducer housing according to claim 6, characterized in that: The guide member has a guide surface on one side close to the oil drain plug, the shell has an inner surface, and the guide surface is recessed along the axial direction of the oil drain hole toward the inner surface.
8. The reducer housing according to claim 6, characterized in that: The guide member includes a guide portion and a reinforcement portion, the protective member is provided with a first end portion and a second end portion along the outer edge of the oil drain hole, and the notch is formed between the first end portion and the second end portion; The first end of the drainage portion is arranged in the notch, the second end of the drainage portion extends out of the notch along the radial direction of the oil drain hole, and the reinforcement portion protrudes from the second end of the drainage portion along the connecting line direction of the first end and the second end.
9. The reducer housing according to claim 8, characterized in that: The reinforcement parts are provided with two, namely the first reinforcement part and the second reinforcement part. The second end of the drainage part is connected between the first reinforcement part and the second reinforcement part along the connecting direction of the first end part and the second end part. The first reinforcement part is connected to the first end part, and the second reinforcement part is connected to the second end part.
10. The reducer housing according to claim 1, characterized in that: An oil filling hole is provided on the shell body, and the oil filling hole is arranged on the top of the shell body. The oil filling hole is communicated with the oil cavity and is used for injecting oil into the oil cavity.
11. The reducer housing according to claim 1, characterized in that: The housing is provided with an output shaft hole, and the output shaft hole is suitable for mounting a wheel shaft; The lowest point of the output shaft hole is located above the highest liquid level of the oil chamber.
12. The reducer housing according to claim 11, characterized in that: An overflow hole is provided on the housing, and the overflow hole is arranged close to the output shaft hole; The overflow hole is circular, and the outer edge of the overflow hole is tangent to the highest liquid level of the oil chamber.
13. The reducer housing according to claim 1, characterized in that: The lowest liquid level of the oil chamber is not lower than the lowest point of the oil drain hole.
14. A reducer, characterized in that: The reducer housing comprises the reducer housing as described in any one of claims 1 to 13.
15. A drive assembly, characterized in that: Includes the reducer as described in claim 14.
16. A vehicle, characterized in that: Comprising the drive assembly as claimed in claim 15.