A transfer case housing having gear oil cleaning function

By introducing a magnetic rod cleaning component into the transfer case housing, metal debris and scum in the gear oil are adsorbed by magnetic force, solving the problem of impurities in the gear oil affecting the performance of the transfer case and realizing easy cleaning of the gear oil.

CN224932129UActive Publication Date: 2026-11-03HANGZHOU NANHUA AUTOMOBILE FITTINGS CO LTD
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Patent Information

Application Number
CN202522413836.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-11-13
Publication Date
2026-11-03
Estimated Expiration
2035-11-13

AI Technical Summary

Technical Problem

The existing transfer case housing has metal shavings and scum that accumulate in the gear oil during use, affecting the transfer case performance and making cleaning inconvenient.

Method used

A transfer case housing with gear oil cleaning function was designed. A magnetic rod is used to magnetically attract metal debris and scum in the gear oil. The magnetic rod can be detached for cleaning by using the threaded connection between the cover and the mounting cylinder.

Benefits of technology

It achieves simple and efficient cleaning of gear oil, reduces the impact of metal shavings and slag on the performance of the transfer case, and simplifies the cleaning process.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a kind of gear oil cleaning function's transfer case shell, including shell and cover plate, the shell and cover plate form rectangular box structure, shell and cover plate are connected by bolt, the side surface of shell is equipped with boss and installation box, installation box is communicated with the inside of shell, output shaft seat is equipped on the inner wall of shell, input shaft seat is equipped on the inner wall of installation box, the downside of boss is equipped with two cleaning components, the magnetic pole of the utility model can be through magnetic force adsorption metal scrap and dregs in gear oil, to concentrate metal scrap and dregs on the side wall of magnetic pole, after only loosening cover, magnetic pole is extracted from shell, it can be to the metal scrap and dregs adsorbed on magnetic pole cleaning, whole process operation is simple, to make the cleaning of transfer case gear oil become simple and convenient.
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Description

Technical Field

[0001] This utility model relates to a transfer case housing with gear oil cleaning function. Background Technology

[0002] The transfer case is a key power distribution device in a car. It is typically located after the transmission, and its main function is to receive power from the transmission and distribute it to the front and rear drive axles. It can also significantly increase output torque for extreme off-road driving, climbing, or getting out of difficult situations. The transfer case housing is the external protective shell of the transfer case, providing protection for the internal components and serving as the assembly base. In existing transfer cases, the transfer case housing usually contains a certain amount of gear oil, with one gear partially submerged in the oil. During transmission, the gear oil is transferred to other gears, thus providing lubrication. However, metal shavings and slag gradually accumulate in the gear oil, affecting the transfer case's performance and making cleaning very troublesome. Therefore, it is necessary to develop a transfer case housing with gear oil cleaning capabilities to solve these problems. Utility Model Content

[0003] The purpose of this utility model is to provide a transfer case housing with gear oil cleaning function to solve the problems mentioned in the background art.

[0004] To solve the above problems, the present invention adopts the following technical solution: A transfer case housing with gear oil cleaning function includes a housing and a cover plate, which form a rectangular box structure. The housing and cover plate are connected by bolts. A boss and a mounting box are provided on one side of the housing. The mounting box communicates with the interior of the housing. An output shaft seat is provided on the inner wall of the housing, and an input shaft seat is provided on the inner wall of the mounting box. Two cleaning components are provided on the lower side of the boss. Each cleaning component includes a mounting cylinder, which is fixedly mounted on the housing. A through hole is provided on one side of the housing located on the mounting cylinder. A cover is provided on one side of the mounting cylinder, and a magnetic rod is provided on one side of the cover. A limit plate is fixedly mounted on the magnetic rod, and one end of the magnetic rod passes through the mounting cylinder and the through hole and extends into the housing.

[0005] Preferably, the cap includes an end cap and a connecting part, the end cap and the connecting part are an integral structure, the outer wall of the connecting part is provided with threads, the connecting part is provided with a threaded hole, the inner wall of the mounting cylinder is provided with threads corresponding to the threads on the connecting part, the connecting part is threadedly connected to the mounting cylinder, one end of the magnetic rod is provided with threads corresponding to the threads on the inner wall of the threaded hole, and the magnetic rod is threadedly connected to the threaded hole.

[0006] Preferably, the mounting cylinder is provided with a sealing gasket, which is disposed between the cover and the limiting plate.

[0007] Preferably, one side of the cover plate is provided with a protruding plate, the protruding plate and the cover plate are an integral structure, and the protruding plate is provided with a hole corresponding to the magnetic rod.

[0008] Preferably, the side wall of the convex plate is provided with a slot, and a sealing frame is engaged in the slot.

[0009] Preferably, the boss is provided with an output shaft hole, the center hole of the output shaft seat is coaxial with the output shaft hole, the mounting box is provided with an input shaft hole, and the center hole of the input shaft seat is coaxial with the input shaft hole.

[0010] Preferably, the output shaft seat is provided with a first reinforcing plate on both sides, and the first reinforcing plate is fixedly connected between the output shaft seat and the inner wall of the housing. The input shaft seat is provided with a second reinforcing plate on both sides, and the second reinforcing plate is fixedly connected between the input shaft seat and the inner wall of the mounting box.

[0011] The beneficial effects of this utility model are: the magnetic rod of this utility model can magnetically attract metal debris and scum in the gear oil, thereby concentrating the metal debris and scum on the side wall of the magnetic rod. After that, you only need to loosen the cap and pull the magnetic rod out of the housing to clean the metal debris and scum attracted on the magnetic rod. The whole process is simple to operate, thus making the cleaning of the transfer case gear oil simple and convenient. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, but this is not a limitation on the scope of protection of this utility model.

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is an exploded view of the present invention; Figure 3 This utility model Figure 1 Schematic diagram of the internal structure of the middle shell; Figure 4 This utility model Figure 2 Schematic diagram of the middle magnetic rod; Figure 5 This utility model Figure 2 Schematic diagram of the middle seal structure; Figure 6 This utility model Figure 2 A schematic diagram of the structure of the middle cover plate. Detailed Implementation

[0014] See Figures 1 to 6The transfer case housing shown includes a housing 11 and a cover plate 21, which form a rectangular box structure. The housing 11 and the cover plate 21 are connected by bolts. A boss 12 and a mounting box 14 are provided on one side of the housing 11. The mounting box 14 communicates with the interior of the housing 11. An output shaft seat 24 is provided on the inner wall of the housing 11, and an input shaft seat 26 is provided on the inner wall of the mounting box 14. The output shaft seat 24 is used for the rotatable mounting of the transfer case output shaft, and the input shaft seat 26 is used for the rotatable mounting of the transfer case input shaft. Two cleaning components 16 are provided on the lower side of the boss 12. Each cleaning component 16 includes a mounting cylinder 17, which is fixedly mounted on the housing 11. A part is provided on one side of the housing 11 located on the mounting cylinder 17. The mounting cylinder 17 has a through hole 23. A cover 20 is provided on one side of the mounting cylinder 17, and a magnetic rod 18 is provided on one side of the cover 20. A limiting plate 28 is fixedly installed on the magnetic rod 18. One end of the magnetic rod 18 passes through the mounting cylinder 17 and the through hole 23 and extends into the housing 11. After gear oil is filled into the housing 11, the magnetic rod 18 extending into the housing 11 is immersed in the gear oil. Metal debris and scum in the gear oil are attracted by the magnetic rod 18 through magnetic force, thereby concentrating the metal debris and scum on the side wall of the magnetic rod 18. The limiting plate 28 is slidably connected to the mounting cylinder 17, thereby allowing the magnetic rod 18 to stably extend into the inside of the housing 11. The diameter of the through hole 23 is larger than the cross-sectional diameter of the mounting cylinder 17, thereby ensuring that the magnetic rod 18 with metal debris and scum attached to its surface can pass smoothly through the through hole 23 when it is pulled out.

[0015] Furthermore, the cover 20 includes an end cap portion 29 and a connecting portion 30, the end cap portion 29 and the connecting portion 30 are an integral structure, the outer side wall of the connecting portion 30 is provided with threads, the connecting portion 30 is provided with a threaded hole 31, the inner wall of the mounting cylinder 17 is provided with threads corresponding to the threads on the connecting portion 30, the connecting portion 30 is threadedly connected to the mounting cylinder 17, one end of the magnetic rod 18 is provided with threads corresponding to the threads on the inner wall of the threaded hole 31, and the magnetic rod 18 is threadedly connected to the threaded hole 31.

[0016] Furthermore, a sealing gasket 19 is provided inside the mounting cylinder 17. The sealing gasket 19 is disposed between the cover 20 and the limiting plate 28. The sealing gasket 19 is placed between the cover 20 and the limiting plate 28, thereby enhancing the sealing between the cover 20 and the mounting cylinder 17 and preventing oil leakage.

[0017] Furthermore, a protruding plate 32 is provided on one side of the cover plate 21. The protruding plate 32 and the cover plate 21 are an integral structure. The protruding plate 32 is provided with an insertion hole 34 corresponding to the magnetic rod 18. When the magnetic rod 18 is inserted into the housing 11, the end of the magnetic rod 18 is inserted into the insertion hole 34, so that the magnetic rod 18 is stably installed.

[0018] Furthermore, the side wall of the protruding plate 32 is provided with a slot 33, and a sealing frame 22 is engaged in the slot 33. The sealing frame 22 can enhance the sealing performance at the connection between the cover plate 21 and the housing 11.

[0019] Furthermore, the boss 12 is provided with an output shaft hole 13, the center hole of the output shaft seat 24 is coaxial with the output shaft hole 13, the mounting box 14 is provided with an input shaft hole 15, and the center hole of the input shaft seat 26 is coaxial with the input shaft hole 15.

[0020] Furthermore, both sides of the output shaft seat 24 are provided with reinforcing plates 25, which are fixedly connected between the output shaft seat 24 and the inner wall of the housing 11. Both sides of the input shaft seat 26 are provided with reinforcing plates 27, which are fixedly connected between the input shaft seat 26 and the inner wall of the mounting box 14. The reinforcing plates 25 provide support for the output shaft seat 24, thereby enhancing the structural stability of the output shaft seat 24. The reinforcing plates 27 provide support for the input shaft seat 26, thereby enhancing the structural stability of the input shaft seat 26.

[0021] The working principle of this utility model is as follows: when the cover 20 is tightened on the mounting cylinder 17, the sealing gasket 19 forms a seal between the cover 20 and the limiting plate 28. The magnetic rod 18 passes through the mounting cylinder 17 and the through hole 23 and extends into the housing 11. When the housing 11 is filled with gear oil, the magnetic rod 18 is immersed in the gear oil. Metal debris and scum appearing in the gear oil will be attracted by the magnetic rod 18 through magnetic force, thereby concentrating the metal debris and scum on the side wall of the magnetic rod 18. The magnetic rod 18 is removed periodically. When removing the magnetic rod 18, it is only necessary to twist the cover 20 to separate the cover 20 from the mounting cylinder 17, and then remove the cover 20. The magnetic rod 18 is pulled out from the housing 11 as the cover 20 moves. Then, the metal debris and scum attracted on the magnetic rod 18 can be cleaned off.

[0022] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions conceived without inventive effort should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope defined in the claims.

Claims

1. A transfer case housing with gear oil cleaning function, characterized in that: The device includes a housing and a cover plate, which form a rectangular box structure. The housing and cover plate are connected by bolts. A boss and a mounting box are provided on one side of the housing. The mounting box communicates with the interior of the housing. An output shaft seat is provided on the inner wall of the housing, and an input shaft seat is provided on the inner wall of the mounting box. Two cleaning components are provided on the lower side of the boss. Each cleaning component includes a mounting cylinder, which is fixedly mounted on the housing. A through hole is provided on one side of the housing located on the mounting cylinder. A cover is provided on one side of the mounting cylinder, and a magnetic rod is provided on one side of the cover. A limit plate is fixedly mounted on the magnetic rod, and one end of the magnetic rod passes through the mounting cylinder and the through hole and extends into the housing.

2. A transfer case housing with gear oil cleaning function according to claim 1, characterized in that: The cap includes an end cap and a connecting part, which are integral structures. The outer wall of the connecting part is provided with threads, and the connecting part is provided with a threaded hole. The inner wall of the mounting cylinder is provided with threads corresponding to the threads on the connecting part. The connecting part is threadedly connected to the mounting cylinder. One end of the magnetic rod is provided with threads corresponding to the threads on the inner wall of the threaded hole, and the magnetic rod is threadedly connected to the threaded hole.

3. A transfer case housing with gear oil cleaning function according to claim 1, characterized in that: The mounting cylinder is equipped with a sealing gasket, which is positioned between the cover and the limiting plate.

4. A transfer case housing with gear oil cleaning function according to claim 1, characterized in that: One side of the cover plate is provided with a protruding plate, which is an integral structure with the cover plate. The protruding plate is provided with a hole corresponding to the magnetic rod.

5. A transfer case housing with gear oil cleaning function according to claim 4, characterized in that: The side wall of the convex plate is provided with a slot, and a sealing frame is engaged in the slot.

6. A transfer case housing with gear oil cleaning function according to claim 1, characterized in that: The boss is provided with an output shaft hole, the center hole of the output shaft seat is coaxial with the output shaft hole, the mounting box is provided with an input shaft hole, and the center hole of the input shaft seat is coaxial with the input shaft hole.

7. A transfer case housing with gear oil cleaning function according to claim 1, characterized in that: The output shaft seat has a first reinforcing plate on both sides, which is fixedly connected between the output shaft seat and the inner wall of the housing. The input shaft seat has a second reinforcing plate on both sides, which is fixedly connected between the input shaft seat and the inner wall of the mounting box.