Transmission and transmission housing

Abstract

This invention relates to a transmission and its housing. The transmission housing includes a first half-housing and a second half-housing. The inner wall of the first half-housing has a first bearing chamber for mounting a first input shaft bearing. An oil baffle and a first oil receiving rib are protruding from the inner wall of the first half-housing. The oil baffle extends circumferentially along the first bearing chamber. An oil collecting port is formed through the oil baffle. The first oil receiving rib and the inner wall of the first half-housing enclose an oil collecting cavity for collecting lubricating oil. The oil collecting cavity is located on the side of the oil baffle facing away from the first bearing chamber and communicates with the oil collecting port. The inner wall of the second half-housing has a second bearing chamber for mounting a second input shaft bearing. The inner wall of the second half-housing has a second oil receiving rib protruding. The second oil receiving rib and the inner wall of the second half-housing enclose an oil collecting cavity communicating with the oil collecting cavity. The oil collecting cavity communicates with the second bearing chamber. Therefore, the above-described transmission housing design extends the service life of the transmission.

Description

Technical Field

[0001] The present invention relates to the technical field of transmission devices, and in particular to a transmission and a transmission housing thereof. Background Art

[0002] With the rapid development of the automobile industry, people have higher requirements for various performances of automobiles, such as the transmission performance of automobiles. In the transmission, in order to prevent the gears and bearings from overheating and wear due to friction, etc., lubricating oil is usually added to the transmission housing during use, and the differential gear is partially immersed in the lubricating oil, so that the lubricating oil at the bottom of the transmission housing can be thrown to the gears and bearings that need lubrication through the rotating gears.

[0003] However, in many cases, due to the limitations of the transmission installation conditions, the input shaft can only be arranged on the upper side of the line connecting the differential shaft and the intermediate shaft, and there are many obstacles between the lubricating oil level and the input shaft. In addition, since the gears in the transmission are often helical gears, at least one of the two bearings at both ends of the input shaft cannot receive enough lubricating oil, resulting in at least one bearing not being able to get enough lubrication, which greatly affects the service life of the transmission. Summary of the invention

[0004] Based on this, it is necessary to provide a transmission and a transmission housing with a longer service life to address the problem of shorter service life of a transmission with a higher input shaft position.

[0005] A transmission housing comprises:

[0006] A first half shell, the inner wall of which is provided with a first bearing chamber for mounting a first input shaft bearing, an oil baffle plate and a first oil receiving rib plate protruding from the inner wall of the first half shell, the oil baffle plate extending along the circumference of the first bearing chamber, and the oil baffle plate is provided with an oil collecting port penetrating the oil baffle plate, the first oil receiving rib plate and the inner wall of the first half shell are surrounded to form an oil receiving cavity for collecting lubricating oil, and the oil receiving cavity is located on a side of the oil baffle plate facing away from the first bearing chamber, and is communicated with the oil collecting port;

[0007] and

[0008] The second half shell is buckled with the first half shell to form the transmission shell with a hollow structure. The inner wall of the second half shell is provided with a second bearing chamber for installing the second input shaft bearing. The inner wall of the second half shell is protruded with a second oil collecting rib plate. The second oil collecting rib plate and the inner wall of the second half shell are surrounded by an oil collecting chamber connected with the oil collecting chamber, and the oil collecting chamber is connected with the second bearing chamber.

[0009] In one embodiment, the transmission housing includes a first end and a second end opposite to each other, and one end of the first oil receiving rib passes through the oil collecting port and is bent toward the first end.

[0010] In one embodiment, the first oil receiving rib plate and the second oil receiving rib plate both extend along the axial direction of the first bearing chamber, and one end of the first oil receiving rib plate is butted against one end of the second oil receiving rib plate to connect the oil receiving chamber and the oil collecting chamber.

[0011] In one embodiment, a cross-sectional shape of the first oil receiving rib plate along the radial direction of the first bearing chamber is the same as a cross-sectional shape of the second oil receiving rib plate along the radial direction of the first bearing chamber.

[0012] In one embodiment, the inner walls of the oil receiving chamber and the oil collecting chamber are respectively recessed with a first oil guide groove and a second oil guide groove extending axially along the first bearing chamber, and the first oil guide groove is connected to the second oil guide groove, and the second oil guide groove is connected to the second bearing chamber.

[0013] In one embodiment, the second oil receiving rib plate is provided with a first oil outlet hole penetrating through the second oil receiving rib plate, and the oil collecting chamber is communicated with the second bearing chamber through the first oil outlet hole;

[0014] The side wall of the second half shell is provided with a second oil outlet hole penetrating the side wall of the second half shell, and the second oil outlet hole is connected with the first oil outlet hole and is axially aligned with the first oil outlet hole.

[0015] In one of the embodiments, it further includes an oil plug, which is sealingly installed in the second oil outlet hole.

[0016] In one of the embodiments, an inner wall of the oil receiving chamber is provided with a mounting groove for placing a magnet block.

[0017] In one of the embodiments, an oil guide rib connected to the oil baffle rib is protruded from the inner wall of the first half shell to separate the inner wall of the first half shell into a top area and a bottom area, and the first bearing chamber is located in the bottom area.

[0018] A transmission includes a transmission housing.

[0019] When the above-mentioned transmission and its transmission housing are in operation, the rotating parts in the transmission housing rotate (mainly including gears, shafts, bearings, etc.) to throw the lubricating oil at the bottom of the transmission housing to the surface of the oil baffle plate facing the first bearing chamber. At this time, part of the lubricating oil on the surface of the oil baffle plate flows to the oil collecting port along the surface of the oil baffle plate, and flows into the oil receiving cavity through the oil collecting port. The lubricating oil in the oil receiving cavity flows into the oil collecting cavity, and flows into the second bearing chamber through the oil collecting cavity to lubricate the second input shaft bearing in the second bearing chamber. Therefore, the provision of the oil baffle plate, the first oil receiving rib plate and the second oil receiving rib plate can guide part of the lubricating oil thrown out of the rotating parts in the transmission to the surface of the oil baffle plate into the second bearing chamber to perform forced lubrication on the second input shaft bearing, so that both the first input shaft bearing and the second input shaft bearing can be fully lubricated, effectively extending the service life of the transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a transmission housing in a preferred embodiment of the present invention;

[0021] Figure 2 for Figure 1 A schematic diagram of the structure of the first half housing in the transmission housing shown;

[0022] Figure 3 for Figure 1 A schematic diagram of the structure of the second half housing in the transmission housing shown;

[0023] Figure 4 for Figure 3 a cross-sectional view of the second half shell shown;

[0024] Figure 5 for Figure 4 A partial enlarged view of the second half shell is shown. DETAILED DESCRIPTION

[0025] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. Preferred embodiments of the present invention are provided in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0027] When describing positional relationships, unless otherwise specified, when an element is referred to as being "on" another element, it can be directly on the other element or there can be an intermediate element. It is also understood that when an element is referred to as being "between" two elements, it can be the only one between the two elements, or there can be one or more intermediate elements.

[0028] In the case of using “including”, “having”, and “comprising” described herein, another component may be added unless a clear limiting term such as “only”, “consisting of”, etc. is used. Unless mentioned otherwise, a term in the singular form may include a plural form and should not be understood as being one in number.

[0029] In addition, the drawings are not drawn to a 1:1 scale, and the relative sizes of the elements in the drawings are drawn only as examples and not necessarily according to the true scale.

[0030] See also Figure 1 The present invention provides a transmission (not shown) and a transmission housing 10 thereof. The transmission includes the transmission housing 10.

[0031] Please also read Figure 2 and Figure 3 The transmission housing 10 in the preferred embodiment of the present invention includes a first half housing 100 and a second half housing 200 which are arranged opposite to each other. Specifically, the first half housing 100 and the second half housing 200 are relatively buckled to form a transmission housing 10 with a hollow structure. Generally, the transmission housing 10 is composed of a front housing and a rear housing, so the first half housing 100 is any one of the front housing and the rear housing, and the second half housing 200 is the other of the front housing and the rear housing.

[0032] The inner walls of the first half housing 100 and the second half housing 200 are respectively provided with a first bearing chamber 110 for mounting a first input shaft bearing (not shown) and a second bearing chamber 210 for mounting a second output shaft bearing (not shown). Specifically, the transmission further includes an input shaft (not shown). Both ends of the input shaft are rotatably disposed in the first bearing chamber 110 and the second bearing chamber 210 through the first input shaft bearing and the second input shaft bearing, respectively.

[0033] The inner wall of the first half shell 100 is provided with an oil baffle plate 120 and a first oil receiving rib plate 130. The oil baffle plate 120 extends along the circumference of the first bearing chamber 110. The oil baffle plate 120 mainly plays the role of guiding and shielding oil. The oil baffle plate 120 is provided with an oil collecting port 121 penetrating the oil baffle plate 120.

[0034] When the transmission is working, the rotating parts in the transmission housing 10 rotate, especially the gears installed on the input shaft rotate, so that the lubricating oil at the bottom of the transmission housing 10 is thrown to the surface of the oil baffle plate 120 facing the first bearing chamber 110. Part of the lubricating oil on the surface of the oil baffle plate 120 flows to the oil collecting port 121 under the action of the centrifugal force generated when the gears in the transmission rotate, and the other part flows into the first bearing chamber 110 under the action of its gravity, so as to fully lubricate the first input shaft bearing.

[0035] The first oil receiving rib 130 and the inner wall of the first half housing 100 are enclosed to form an oil receiving chamber 140 for collecting lubricating oil. The oil receiving chamber 140 is located on the side of the oil retaining rib 120 facing away from the first bearing chamber 110 and is connected to the oil collecting port 121. When the transmission is working, the lubricating oil flowing to the oil collecting port 121 flows into the oil receiving chamber 140 through the oil collecting port 121, so that the lubricating oil is collected in the oil receiving chamber 140.

[0036] A second oil receiving rib 220 is protruding from the inner wall of the second half shell 200 . The second oil receiving rib 220 and the inner wall of the second half shell 200 enclose an oil collecting chamber 230 communicating with the oil receiving chamber 140 .

[0037] The second oil receiving rib 220 is protruding from the inner wall of the second half housing 200, and is surrounded by the inner wall of the second half housing 200 to form an oil collecting chamber 230 that is in communication with the oil receiving chamber 140. The oil collecting chamber 230 is in communication with the second bearing chamber 210. Therefore, when the transmission is working, the lubricating oil collected in the oil receiving chamber 140 flows into the oil collecting chamber 230, and then flows into the second bearing chamber 210 through the oil collecting chamber 230 to lubricate the second input shaft bearing.

[0038] Therefore, the arrangement of the oil baffle plate 120, the first oil receiving rib plate 130 and the second oil receiving rib plate 220 can guide part of the lubricating oil thrown out by the transmission rotating parts to the surface of the oil baffle plate 120 into the second bearing chamber 210 to force lubrication of the second input shaft bearing, so that the first input shaft bearing and the second input shaft bearing can be fully lubricated, effectively extending the service life of the transmission.

[0039] In this embodiment, the transmission housing 10 includes a first end 310 and a second end 320 opposite to each other. When the transmission is located on a horizontal plane, the first end 310 is the top of the transmission housing 10, and the second end 320 is the bottom of the transmission housing 10. One end of the first oil receiving rib plate 130 passes through the oil collecting port 121 and is bent toward the first end 310. In some embodiments, one end of the first oil receiving rib plate 130 passes through the oil collecting port 121 and is bent upward. Thus, one end of the first oil receiving rib plate 130 is bent upward, so that the lubricating oil thrown to the surface of the oil retaining rib plate 120 by the rotating parts in the transmission rotates, flows more into the oil receiving chamber 140 through the oil collecting port 121, so that more lubricating oil flows into the second bearing chamber 210 through the oil collecting chamber 230, thereby making the lubrication effect of the second input shaft bearing located in the second bearing chamber 210 better, further reducing the probability of the second input shaft bearing being damaged due to overheating, wear, etc., and further extending the service life of the transmission.

[0040] In this embodiment, the first oil receiving rib plate 130 and the second oil receiving rib plate 220 both extend along the axial direction of the first bearing chamber 110. One end of the first oil receiving rib plate 130 is butted against one end of the second oil receiving rib plate 220 so that the oil receiving chamber 140 and the oil collecting chamber 230 are in communication. Thus, the first oil receiving rib plate 130 extends along the axial direction of the first bearing chamber 110. When the first half shell 100 and the second half shell 200 are relatively buckled, the first oil receiving rib plate 130 and the second oil receiving rib plate 220 are butted against each other so that the oil receiving chamber 140 and the oil collecting chamber 230 are in communication, so that the lubricating oil in the oil receiving chamber 140 can flow into the oil collecting chamber 230.

[0041] Furthermore, in this embodiment, the cross-sectional shape of the first oil receiving rib plate 130 along the radial direction of the first bearing chamber 110 is the same as the cross-sectional shape of the second oil receiving rib plate 220 along the radial direction of the first bearing chamber 110. Therefore, the first oil receiving rib plate 130 and the second oil receiving rib plate 220 both extend along the axial direction of the first bearing chamber 110. The first oil receiving rib plate 130 and the second oil receiving rib plate 220 are set to the same shape so that the first oil receiving rib plate 130 and the second oil receiving rib plate 220 are flush at the joint, which can improve the jointing effect when the first oil receiving rib plate 130 and the second oil receiving rib plate 220 are jointed.

[0042] Furthermore, in this embodiment, the inner wall of the oil receiving chamber 140 and the inner wall of the oil collecting chamber 230 are respectively recessed to form a first oil guide groove (not shown) and a second oil guide groove (not shown) extending along the axial direction of the first bearing chamber 110. The first oil guide groove is connected to the second oil guide groove. The second oil guide groove is connected to the second bearing chamber 210.

[0043] When in use, the lubricating oil entering the oil receiving chamber 140 is collected into the first oil guide groove under its own gravity, the lubricating oil in the first oil guide groove flows into the second oil guide groove, and the lubricating oil in the second oil guide groove flows into the second bearing chamber 210 to lubricate the second input shaft bearing. Since the first oil guide groove and the second oil guide groove are elongated concave structures, the lubricating oil entering the oil receiving chamber 140 is more easily collected in the first oil guide groove, and the more lubricating oil in the first oil guide groove and the second oil guide groove makes the flow speed from the oil receiving chamber 140 and the oil collecting chamber 230 faster, so that the second input shaft bearing in the second bearing chamber 210 can be more fully lubricated.

[0044] Please also read Figure 4 In this embodiment, the second oil receiving rib plate 220 is provided with a first oil outlet hole 221 penetrating the second oil receiving rib plate 220. The oil receiving chamber 140 is connected with the second bearing chamber 210 through the first oil outlet hole 221. Specifically, when the inner wall of the oil collecting chamber 230 is provided with a second oil guide groove, the first oil outlet hole 221 is located in the second oil guide groove. Therefore, the provision of the first oil outlet hole 221 can realize the connection between the oil collecting chamber 230 and the second bearing chamber 210, and the lubricating oil in the oil collecting chamber 230 flows into the second bearing chamber 210 through the first oil outlet hole 221.

[0045] Please also read Figure 5 The side wall of the second half shell 200 is provided with a second oil outlet hole 240 that penetrates the side wall of the second half shell 200. The first oil outlet hole 221 and the second oil outlet hole 240 are connected to each other and axially aligned. Thus, a through hole can be formed between the first oil outlet hole 221 and the second oil outlet hole 240.

[0046] When the first oil outlet hole 221 needs to be processed, the second half shell 200 can be directly drilled from the outside of the second half shell 200 using a drill or other tool to form the first oil outlet hole 221 and the second oil outlet hole 240; or when the second half shell 200 is cast, a mandrel can be set in the mold cavity of the injection mold, and when the second half shell 200 is demolded after injection molding, the mandrel can be directly taken out from the opening of the second oil outlet hole 240 located on the outer surface of the second half shell 200, and the processing of the first oil outlet hole 221 and the second oil outlet hole 240 can be completed. Therefore, the second oil outlet hole 240 is a process hole, which is mainly used for auxiliary processing of the first oil outlet hole 221. Therefore, the setting of the second oil outlet hole 240 makes the processing of the first oil outlet hole 221 simpler.

[0047] Furthermore, in this embodiment, the transmission housing 10 further includes an oil plug 400. The oil plug 400 is sealed and installed in the second oil outlet hole 240. The oil plug 400 can be a screw plug, a bowl-shaped plug, etc. When the transmission is working, if the second oil outlet hole 240 is not blocked, the lubricating oil in the oil collecting chamber 230 is very likely to flow into the second oil outlet hole 240 and out of the second half housing 200. Therefore, the oil plug 400 mainly plays the role of blocking the second oil outlet hole 240 to reduce the probability of the lubricating oil in the oil collecting chamber 230 flowing out of the transmission housing 10.

[0048] Please refer again Figure 1 In this embodiment, the inner wall of the oil receiving chamber 140 is provided with a mounting groove 231 for placing a magnet block (not shown). In the transmission, the magnet block is detachably mounted in the mounting groove 231. Specifically, the magnet block is adsorbed on the inner wall of the mounting groove 231.

[0049] When the transmission is working, the iron chips in the transmission housing 10 are rotated by the rotating parts and splashed onto the surface of the oil baffle plate 120 facing the first bearing chamber 110. Some iron chips move on the surface of the oil baffle plate 120 and move into the oil receiving chamber 140 through the oil collecting port 121. If the lubricating oil mixed with iron chips flows into the second bearing chamber 210 through the oil collecting chamber 230 to lubricate the second input shaft bearing, it will affect the running accuracy of the second input shaft bearing.

[0050] The magnet block disposed in the oil receiving chamber 140 can collect the iron filings in the lubricating oil in the oil receiving chamber 140 on the surface of the magnet block through magnetic force, so as to filter the iron filings in the lubricating oil in the oil receiving chamber 140, thereby extending the service life of the lubricating oil and improving the lubrication effect on the second input shaft bearing, providing a good operating environment for the operation of the second input shaft bearing, and further extending the service life of the transmission. The magnet block in the oil receiving chamber 140 can be taken out during the maintenance of the transmission, and the iron filings on its surface can be cleaned and then reinstalled in the installation groove 231.

[0051] In this embodiment, the inner wall of the first half housing 100 is provided with an oil guide rib 150 connected to the oil baffle rib 120, so as to separate the inner wall of the first half housing 100 into a top area 160 and a bottom area 170. The first bearing chamber 110 is located in the bottom area 170. Thus, the first bearing chamber 110 is located in the bottom area 170. The oil baffle rib 120 and the oil guide rib 150 can block splashing lubricating oil, greatly reducing the lubricating oil entering the female cadre area, reducing the waste of lubricating oil, and improving the lubrication effect of the transmission.

[0052] When the transmission housing 10 includes opposite first and second ends 310 and 320 , the top region 160 is an inner region of the second half housing 200 located at the first end 310 , and the bottom region 170 is an inner wall region of the second half housing 200 located at the second end 320 .

[0053] When the above-mentioned transmission and its transmission housing 10 are working, the rotating parts in the transmission housing 10 rotate (mainly including gears, shafts, bearings, etc.) to throw the lubricating oil at the bottom of the transmission housing 10 to the surface of the oil baffle plate 120 facing the first bearing chamber 110. At this time, part of the lubricating oil on the surface of the oil baffle plate 120 flows along the surface of the oil baffle plate 120 to the oil collecting port 121, and flows into the oil receiving chamber 140 through the oil collecting port 121. The lubricating oil in the oil receiving chamber 140 flows into the oil collecting chamber 230, and flows into the second bearing chamber 210 through the oil collecting chamber 230 to lubricate the second input shaft bearing in the second bearing chamber 210. Therefore, the arrangement of the oil baffle plate 120, the first oil receiving rib plate 130 and the second oil receiving rib plate 220 can guide part of the lubricating oil thrown out by the rotating parts in the transmission to the surface of the oil baffle plate 120 into the second bearing chamber 210, so as to force lubrication of the second input shaft bearing, so that the first input shaft bearing and the second input shaft bearing can be fully lubricated, effectively extending the service life of the transmission.

[0054] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0055] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A transmission housing, characterized in that: include: A first half shell, the inner wall of which is provided with a first bearing chamber for mounting a first input shaft bearing, an oil baffle plate and a first oil collecting rib plate protruding from the inner wall of the first half shell, the oil baffle plate extending along the circumference of the first bearing chamber, and the oil baffle plate is provided with an oil collecting port penetrating the oil baffle plate, the first oil collecting rib plate and the inner wall of the first half shell are formed to form an oil collecting cavity for collecting lubricating oil, and the oil collecting cavity is located on a side of the oil baffle plate facing away from the first bearing chamber, and is communicated with the oil collecting port; and A second half shell is buckled with the first half shell to form the transmission shell with a hollow structure, the inner wall of the second half shell is provided with a second bearing chamber for mounting a second input shaft bearing, the inner wall of the second half shell is provided with a second oil receiving rib plate, the second oil receiving rib plate and the inner wall of the second half shell are surrounded to form an oil collecting chamber communicating with the oil receiving chamber, and the oil collecting chamber is communicated with the second bearing chamber; Wherein, the transmission housing includes a first end and a second end relative to each other, the first end is the top end of the transmission housing, and the second end is the bottom end of the transmission housing; one end of the first oil receiving rib plate passes through the oil collecting port and is bent toward the first end; the first oil receiving rib plate and the second oil receiving rib plate both extend along the axial direction of the first bearing chamber, and when the first half shell and the second half shell are relatively buckled, the first oil receiving rib plate and the second oil receiving rib plate are connected to connect the oil receiving chamber and the oil collecting chamber.

2. The transmission housing according to claim 1, characterized in that: A cross-sectional shape of the first oil receiving rib plate along the radial direction of the first bearing chamber is the same as a cross-sectional shape of the second oil receiving rib plate along the radial direction of the first bearing chamber.

3. The transmission housing according to claim 1, characterized in that: The inner walls of the oil receiving cavity and the oil collecting cavity are respectively recessed with a first oil guide groove and a second oil guide groove extending axially along the first bearing chamber, and the first oil guide groove is communicated with the second oil guide groove, and the second oil guide groove is communicated with the second bearing chamber.

4. The transmission housing according to claim 1, characterized in that: The second oil receiving rib plate is provided with a first oil outlet hole penetrating through the second oil receiving rib plate, and the oil collecting chamber is communicated with the second bearing chamber through the first oil outlet hole; The side wall of the second half shell is provided with a second oil outlet hole penetrating the side wall of the second half shell, and the second oil outlet hole is connected with the first oil outlet hole and is axially aligned with the first oil outlet hole.

5. The transmission housing according to claim 4, characterized in that: It also includes an oil plug, which is sealingly installed in the second oil outlet hole.

6. The transmission housing according to claim 1, characterized in that: The inner wall of the oil receiving cavity is provided with a mounting groove for placing the magnet block.

7. The transmission housing according to claim 1, characterized in that: The inner wall of the first half shell is protrudingly provided with an oil guide rib connected to the oil baffle rib to separate the inner wall of the first half shell into a top area and a bottom area, and the first bearing chamber is located in the bottom area.

8. A transmission, characterized in that: Comprising a transmission housing as claimed in any one of claims 1 to 7.

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