Speed reducer shell, speed reducer and vehicle
By integrating an oil-proof ring on the reducer housing to prevent oil from splashing into the engine and exhaust pipes, the oil-splitting problem caused by broken oil seals is solved, and the safety of the vehicle and the reliability of the reducer housing are improved.
Patent Information
- Application Number
- CN202420642975.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-29
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-03-29
AI Technical Summary
When the oil seal is damaged, lubricating oil may be thrown out through the gap between the dust cover and the reducer housing, causing oil to splash to the high-temperature engine and exhaust pipes, which may cause vehicle combustion and affect occupants and property safety. .
Design a reducer housing with integrated oil-proof ring. The oil-proof ring is located at the end of the shaft hole and is placed outside the dustproof cover on the rotating shaft. It has an oil-guiding part and reinforcement ribs. The oil-guiding part guides the oil downward through the gap. Flow to prevent oil from splashing.
Effectively prevent oil from splashing into the engine and exhaust pipes, improve vehicle safety, ensure occupants and property safety, and extend the service life of the reducer housing.
Smart Images
Figure CN222163491U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of vehicle parts, and in particular to a reducer housing. Meanwhile, the utility model also relates to a reducer using the reducer housing, and a vehicle equipped with the reducer. Background Art
[0002] The reducer matches the speed and transmits torque between the prime mover and the working machine or actuator. For example, in a vehicle, the power transmitted by the engine is transmitted from the drive shaft to the wheels through the reducer and differential.
[0003] The reducer mainly includes a reducer housing, an input shaft, an output shaft, and a power transmission mechanism for transmitting power between the input shaft and the output shaft. The reducer used in existing vehicles has an oil seal and a dust cover on the input shaft. There is generally a gap between the dust cover and the shaft hole end of the input shaft of the reducer housing, and the gap is generally about 1mm. In addition, the diameter of the outer wall of the dust cover is larger than the inner diameter of the shaft hole and smaller than the outer diameter of the shaft hole.
[0004] When the reducer with the above structure is used in a vehicle, if the oil seal is damaged due to various reasons such as ablation or aging, the lubricating oil in the reducer may flow along the damaged part to the dust cover and be thrown out from the gap between the reducer housing and the dust cover. Since the reducer is arranged next to the engine and exhaust pipe, the engine will generate high temperature when the vehicle is running, and the oil thrown onto the high-temperature engine housing may burn, and even cause the whole vehicle to burn, affecting the life and property safety of the passengers. Utility Model Content
[0005] In view of this, the utility model aims to provide a reducer housing to prevent oil from being thrown out from the gap between the dust cover and the reducer housing.
[0006] In order to achieve the above object, the technical solution of the utility model is implemented as follows:
[0007] A reducer housing comprises a housing body and an oil-proof ring; wherein:
[0008] The housing body is formed with an axial hole for the rotating shaft to pass through;
[0009] The oil-proof ring is arranged on the housing body and is located at the end of the shaft hole. The oil-proof ring is used to be sleeved on the outside of the dust cover located on the rotating shaft.
[0010] Furthermore, the oil-proof ring is integrated with the shell body.
[0011] Furthermore, an oil guide portion is provided on the lower side of the oil-proof ring, and the oil guide portion is used to guide the oil to flow downward.
[0012] Furthermore, the oil guiding portion includes a notch provided at the end of the oil protection ring.
[0013] Furthermore, the side walls on both sides of the notch are connected to the bottom wall of the notch in a smooth transition manner.
[0014] Furthermore, at least one end of the bottom wall of the notch is provided with a reinforcing rib.
[0015] Furthermore, the outer end of the bottom wall of the notch is provided with the reinforcing rib;
[0016] In the radial direction of the shaft hole, the height of the reinforcing rib is flush with the outer wall of the oil-proof ring.
[0017] Furthermore, the cross section of the oil-proof ring is semicircular;
[0018] The inner wall of the oil-proof ring is cylindrical.
[0019] Compared with the prior art, the utility model has the following advantages:
[0020] The reducer housing described in the utility model is provided with an oil-proof ring on the housing body, so that when the oil seal is damaged and leaks oil, the oil is thrown onto the inner wall of the oil-proof ring. In this way, the oil can flow to the ground under the action of gravity, and the oil thrown out from the dust cover can be effectively prevented from splashing onto the engine and its exhaust pipe. When used in vehicles, it is beneficial to prevent vehicle combustion caused by oil seal leakage, thereby improving the safety of the vehicle and effectively ensuring the life and property safety of the occupants.
[0021] In addition, the oil-proof ring is integrated into the housing body, which is convenient for processing, does not increase processing costs, and has high reliability in preventing oil splashing. An oil guide portion is arranged on the lower side of the oil-proof ring, which is conducive to guiding the oil to flow to the ground and can discharge the oil in time. The oil guide portion is set as a notch, which is convenient for processing and has a good oil drainage effect.
[0022] In addition, the side walls and bottom walls on both sides of the notch are smoothly connected to each other, which can reduce stress concentration and better prevent the reducer housing from being damaged at the notch, which is beneficial to improving the safety and reliability of the reducer housing. Reinforcing ribs are arranged on at least one side of the bottom wall of the notch to strengthen the structural strength of the reducer housing where the notch is arranged, which is further beneficial to improving the safety and reliability of the reducer housing and extending the service life of the reducer housing.
[0023] At the same time, reinforcing ribs are arranged on the outer side of the bottom wall of the notch, which will not occupy the space inside the reducer housing. The cross section of the oil-proof ring is limited to be semicircular, so that the outer wall of the housing body where the shaft hole is arranged is smooth and uniform, which can effectively increase the structural strength of the front reducer housing at this part. The inner wall of the oil-proof ring is limited to be cylindrical, which is easy to process and manufacture, and can fully and reasonably utilize the occupied space in conjunction with the rotating shaft.
[0024] Another object of the present invention is to provide a reducer, which includes the reducer housing as described above.
[0025] The reducer described in the utility model, by applying the aforementioned reducer housing, can better prevent the oil thrown out from the dust cover from splashing onto the engine and its exhaust pipe. When applied to a vehicle, it can prevent the vehicle from burning due to oil seal leakage, thereby improving the safety of the vehicle and effectively ensuring the life and property safety of the occupants.
[0026] At the same time, another object of the utility model is to provide a vehicle, on which the reducer as described above is provided.
[0027] The vehicle described in the utility model can improve the safety of the vehicle by applying the above reducer, thereby effectively ensuring the life and property safety of the passengers. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:
[0029] Figure 1 This is a schematic diagram of the structure of the reducer housing in the application state according to the first embodiment of the utility model;
[0030] Figure 2 This is a cross-sectional view of the reducer housing in the application state according to the first embodiment of the utility model;
[0031] Figure 3 This is a schematic structural diagram of the reducer housing according to the first embodiment of the utility model;
[0032] Figure 4 for Figure 3 Schematic diagram of the structure from another perspective;
[0033] Figure 5 for Figure 3 A schematic diagram of the structure from another perspective;
[0034] Figure 6 for Figure 5 A magnified view of part A;
[0035] Figure 7 for Figure 3 Schematic diagram of the structure from another perspective.
[0036] Description of reference numerals:
[0037] 1. Shell body; 2. Oil-proof ring; 3. Rotating shaft; 4. Oil seal; 5. Dust cover;
[0038] 101, shaft hole; 102, through hole; 103, mounting hole; 201, notch; 2011, side wall; 2012, bottom wall; 202, reinforcing rib. DETAILED DESCRIPTION
[0039] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.
[0040] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "back" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.
[0041] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installation", "connection", "connection", and "connector" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.
[0042] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.
[0043] Embodiment 1
[0044] The present embodiment relates to a reducer housing, which can effectively prevent the oil thrown out from the dust cover 5 from flying out by improving its own structure. Therefore, when used in a vehicle, it can prevent the oil from splashing onto the exhaust pipe of the engine and its surroundings, and prevent the vehicle from burning due to the splashing of oil during driving, thereby effectively ensuring the safety of the lives and property of the passengers.
[0045] In order to better understand this embodiment, refer to Figure 1 and Figure 2 The structure of the reducer is described. The reducer mainly includes a reducer housing, an input shaft, for example, an input shaft with a flange, the input shaft is inserted into the shaft hole 101 of the reducer housing, and the input shaft is provided with an oil seal 4 and a dust cover 5. It should be understood that the input shaft can be with or without a flange, and both are within the protection scope of this embodiment.
[0046] The structure of the output shaft is not shown in the figure, which can be, for example, a driving shaft of the vehicle, and is inserted into the through hole 102. A power transmission structure not shown in the figure, such as a gear pair, is also provided between the input shaft and the output shaft. In order to facilitate the installation of the reducer on the frame, a mounting hole 103 is also provided on the reducer housing 1, and the reducer housing can be installed on the bracket by means of bolts, and then installed on the frame by means of the bracket.
[0047] Based on the above structural description, and in order to facilitate a better understanding of this embodiment, the following is an example of improving the structure of the shaft hole 101 of the input shaft of the front final reducer of the vehicle. However, it can be understood that in addition to setting the oil-proof ring 2 of this embodiment at the shaft hole 101 of the input shaft, of course, the oil-proof ring 2 can also be set at the shaft hole 101 of the output shaft, such as the through hole 102.
[0048] Furthermore, the reducer housing in this embodiment can be applied to not only the front main reducer of the vehicle, but also other parts of the vehicle, such as the rear main reducer, or other devices requiring a reducer. Any reducer housing that causes oil throwing due to the provision of the oil seal 4 and the dust cover 5 can be improved with reference to the structure described in this embodiment, and all are within the protection scope of this embodiment.
[0049] An exemplary structure of the reducer housing of this embodiment is as follows Figures 3 to 7 As shown, it mainly includes a housing body 1 and an oil-proof ring 2. A shaft hole 101 is formed in the housing body 1 for the shaft 3 to pass through, and the oil-proof ring 2 is arranged on the housing body 1 and located at the end of the shaft hole 101. The oil-proof ring 2 is used to be sleeved on the dust cover 5 located on the shaft 3. In this embodiment, the shaft 3 is taken as an input shaft for explanation.
[0050] In terms of specific structure, the structure of the housing body 1 in this embodiment can refer to the existing housing structure, and the oil-proof ring 2 in this embodiment can be as follows: Figure 2 As shown, the oil-proof ring 2 is blocked outside the dust cover 5, which is equivalent to lengthening the portion of the existing reducer housing where the shaft hole 101 is provided. It is a structure added to the existing reducer housing, and preferably, the wall thickness is thicker than that of the existing housing to improve the structural strength.
[0051] As a preferred embodiment, the oil-proof ring 2 is integrated with the housing body 1, so that an integrated die-casting process can be adopted, which is convenient for processing, ensures that the reducer housing has a strong strength, meets the requirements of various working conditions, and has a simple process without increasing costs. In addition, the oil-proof ring 2 is integrated with the housing body 1, and the reliability of preventing oil splashing is high. In addition, it is possible to make the oil-proof ring and the housing body 1 detachably connected, such as screwing, clamping, and plugging.
[0052] In a preferred embodiment, in the axial direction of the shaft hole 101, the size of the oil-proof ring 2 is preferably 8 mm-12 mm, such as 8 mm, 10 mm and 12 mm, so as to completely cover the dust cover 5 and the oil seal 4, thus having a better effect of preventing the oil from being thrown out. In addition, it is also possible to make the oil-proof ring 2 cover part of the dust cover 5.
[0053] For example, one end of the dust cover 5 is mounted on the rotating shaft 3, and the other end is a free end. The oil-proof ring 2 can only cover the port of the free end of the dust cover 5. In the axial direction of the shaft hole 101, the more the oil-proof ring 2 and the dust cover 5 cross, the better the oil-proof effect of the oil-proof ring 2. During actual setting, it can be set according to the actual spatial position to prevent oil from splashing from the port of the dust cover 5 to the outside of the reducer housing.
[0054] As a preferred embodiment, Figure 5 and Figure 6 As shown, an oil guide portion is provided on the lower side of the oil-proof ring 2, and the oil guide portion is used to guide the oil to flow downward, so as to facilitate guiding the oil to flow to the ground and discharge the oil in time.
[0055] As a preferred embodiment, the oil guide portion includes a notch 201 provided at the end of the oil-proof ring 2, which is easy to process and has a good oil leakage effect. In addition, the oil guide portion can be an oil leakage hole or an oil guide groove. The oil guide groove mentioned here can be, for example, a groove provided on the inner wall of the oil-proof ring 2 to facilitate the oil to be guided to the port of the reducer housing. Alternatively, the inner wall of the reducer housing shaft hole 101 is set into a truncated cone shape to guide the oil to flow to the ground, which is feasible.
[0056] As a preferred embodiment, continue to refer to Figure 6 As shown, the side walls 2011 on both sides of the notch 201 are connected to the bottom wall 2012 of the notch 201 in a smooth transition, which can reduce stress concentration, better prevent the reducer housing from being damaged at the notch 201, and help improve the safety and reliability of the reducer housing application. It is understandable that the connection between the side wall 2011 and the bottom wall 2012 can also be set at an angle.
[0057] In order to avoid damage to the reducer housing at the notch 201 due to the notch 201, as a preferred embodiment, at least one end of the bottom wall 2012 of the notch 201 is provided with a reinforcing rib 202, which can prevent the problem of insufficient strength of the reducer housing due to the notch 201, strengthen the structural strength of the reducer housing at the notch 201, further help improve the safety and reliability of the reducer housing, and extend the service life of the reducer housing.
[0058] As a preferred embodiment, a reinforcing rib 202 is provided at the outer end of the bottom wall 2012 of the notch 201, and the length direction of the reinforcing rib 202 spans the width of the entire notch 201 (that is, the distance between the two side walls 2011), and, in order to achieve a better reinforcement effect, the length of the reinforcing rib 202 is greater than the width of the notch 201, and the outer wall of the reinforcing rib 202 is smoothly connected to the outer wall of the oil-proof ring and the outer wall of the reducer housing to help reduce stress concentration.
[0059] In the above structure, no reinforcing rib 202 is provided at the inner end of the bottom wall 2012 of the notch 201, so as not to occupy the space inside the reducer housing. It should be noted that the inner end of the bottom wall 2012 refers to the side of the bottom wall 2012 facing the inside of the shaft hole 101, and the outer end of the bottom wall 2012 refers to the end facing the outside of the reducer housing.
[0060] As a preferred embodiment, in the radial direction of the shaft hole 101, the height of the reinforcing rib 202 is flush with the outer wall of the oil-proof ring 2, which has a good effect of strengthening the structural strength of the notch 201. In addition, in the radial direction of the shaft hole 101, the height of the reinforcing rib 202 can of course be lower or higher than the outer wall of the oil-proof ring 2.
[0061] As a preferred embodiment, the cross section of the oil-proof ring 2 is semicircular. Here, the cross section of the oil-proof ring 2 is limited so that the outer wall of the housing body 1 where the shaft hole 101 is arranged is smooth and uniform, which can effectively increase the structural strength of the front reducer housing at this part and reduce stress concentration. It is understandable that the cross section of the oil-proof ring 2 can also be in other shapes, such as square, oval, triangle, etc.
[0062] As a preferred embodiment, the inner wall of the oil-proof ring 2 is cylindrical, which is easy to manufacture and can fully and reasonably utilize the occupied space when matched with the rotating shaft 3. In addition, the inner wall of the oil-proof ring 2 can also be in other shapes, such as a truncated cone. When so configured, it is better that the end of the inner wall with a smaller diameter is close to the port of the shaft hole 101, so that the oil leaking from the oil seal 4 can be better guided to the port, so that the oil can flow to the ground.
[0063] It should be noted that in this embodiment, the hole wall of the input shaft hole 101 is an integrated structure for explanation. However, if the input shaft hole 101 is formed by two half shells, the oil-proof ring 2 in this embodiment is also respectively arranged on the two half shells, and the oil-proof ring 2 of this embodiment can be assembled and constructed.
[0064] In addition, in addition to setting the oil-proof ring 2 of the present embodiment at the end of the shaft hole 101 of the input shaft, the oil-proof ring 2 of the present embodiment may also be added to the end of the shaft hole 101 of the output shaft, such as the through hole 102, or the oil-proof ring 2 of the present embodiment may be set at the end of the shaft hole 101 of the input shaft and the end of the shaft hole 101 of the output shaft at the same time, all of which are within the protection scope of the present embodiment.
[0065] The reducer housing of this embodiment is provided with an oil-proof ring 2 on the housing body 1. When the oil seal 4 is damaged and leaks oil, the oil can be thrown onto the inner wall of the oil-proof ring 2. In this way, the oil can flow to the ground under the action of gravity, which can effectively prevent the oil thrown out from the dust cover 5 from splashing onto the engine and its exhaust pipe. When used in vehicles, it is beneficial to prevent vehicle combustion caused by oil leakage from the oil seal 4, thereby improving the safety of the vehicle and effectively ensuring the life and property safety of the occupants.
[0066] Embodiment 2
[0067] This embodiment relates to a reducer, which includes a reducer housing as in Embodiment 1. The remaining structure of the reducer housing can refer to the existing structure.
[0068] The reducer of this embodiment, by applying the aforementioned reducer housing, can better prevent the oil thrown out from the dust cover 5 from splashing onto the engine and its exhaust pipe. When applied to a vehicle, it can prevent the vehicle from burning due to oil leakage from the oil seal 4, thereby improving the safety of the vehicle and effectively ensuring the life and property safety of the occupants.
[0069] At the same time, this embodiment also relates to a vehicle, on which the above reducer is provided.
[0070] The vehicle of this embodiment can improve the safety of the vehicle by applying the above reducer, thereby effectively ensuring the safety of the life and property of the passengers.
[0071] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. 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: It comprises a housing body (1) and an oil-proof ring (2); The housing body (1) is provided with an axial hole (101) through which the rotating shaft (3) passes; The oil-proof ring (2) is arranged on the housing body (1) and is located at the end of the shaft hole (101). The oil-proof ring (2) is used to be sleeved on the outside of the dust cover (5) located on the rotating shaft (3).
2. The reducer housing according to claim 1, characterized in that: The oil-proof ring (2) is integrated on the housing body (1).
3. The reducer housing according to claim 1, characterized in that: An oil guide portion is provided on the lower side of the oil-proof ring (2), and the oil guide portion is used to guide the oil to flow downward.
4. The reducer housing according to claim 3, characterized in that: The oil guide portion comprises a notch (201) provided at the end of the oil protection ring (2).
5. The reducer housing according to claim 4, characterized in that: The side walls (2011) on both sides of the notch (201) are connected to the bottom wall (2012) of the notch (201) in a smooth transition.
6. The reducer housing according to claim 4, characterized in that: At least one end of the bottom wall (2012) of the notch (201) is provided with a reinforcing rib (202).
7. The reducer housing according to claim 6, characterized in that: The outer end of the bottom wall (2012) of the notch (201) is provided with the reinforcing rib (202); In the radial direction of the shaft hole (101), the height of the reinforcing rib (202) is flush with the outer wall of the oil protection ring (2).
8. The reducer housing according to any one of claims 1 to 7, characterized in that: The cross section of the oil-proof ring (2) is semicircular, and the inner wall of the oil-proof ring (2) is cylindrical.
9. A reducer, characterized in that: The reducer comprises the reducer housing according to any one of claims 1 to 8.
10. A vehicle, characterized in that: The vehicle is provided with the speed reducer according to claim 9.