Gearbox shell

Abstract

The gearbox shell comprises a shell body, a vent hole is formed in the shell body, the gearbox shell further comprises an exhaust mechanism, the exhaust mechanism is used for exhausting air in the gearbox shell, the exhaust mechanism comprises a sliding rod and a driving part, and an oil absorption sponge is arranged in the vent hole; the side face of one side of the oil absorption sponge abuts against the side wall in the axis direction of the ventilation hole, the sliding rod is slidably connected into the ventilation hole in the axis direction of the ventilation hole, one end of the sliding rod abuts against the oil absorption sponge, an air outlet channel is coaxially formed in the sliding rod, and the driving part is used for driving the sliding rod to slide. The oil absorption sponge is arranged in the vent hole, oil entering the vent hole can be absorbed, the oil leakage possibility of the gearbox shell during exhausting is reduced, the sliding rod is driven by the driving piece to slide, the sliding rod extrudes the oil absorption sponge, the oil absorbed in the oil absorption sponge is extruded out, and waste of lubricating oil in the gearbox shell is reduced.

Description

Technical Field

[0001] The utility model relates to the field of gearbox housings, and particularly to a gearbox housing. Background Art

[0002] The gearbox housing is the outer shell part of the gearbox. It assembles related parts such as gears, shafts, bearings, and shift forks in the gearbox into a whole, maintains the correct positions among them, and transmits power coordinately according to a certain transmission relationship. Existing automotive gearboxes generally use splash lubrication, that is, a certain amount of lubricating oil is stored in the gearbox housing. When the gear pairs in the gearbox rotate at high speed, the lubricating oil is rolled up and splashed onto the required gears, shafts, bearings and other related parts, which can play a role in cooling and lubrication.

[0003] During high-speed operation, as heat is generated by gear friction, the temperature and pressure inside the gearbox increase. To balance the internal and external air pressures, a vent hole is provided on the gearbox housing, and a vent plug is installed in the vent hole. At this time, the vent plug opens to exhaust to the outside to balance the internal and external air pressures, but there will be lubricating oil flowing from the vent plug to the outside of the gearbox, thus causing an oil leakage phenomenon at the vent plug. Summary of the Utility Model

[0004] In order to reduce the possibility of oil leakage when the gearbox housing exhausts, this application provides a gearbox housing.

[0005] The gearbox housing provided by this application adopts the following technical solutions:

[0006] A gearbox housing includes a housing main body. A vent hole is opened on the housing main body. It further includes an exhaust mechanism for exhausting the inside of the gearbox housing. The exhaust mechanism includes a sliding rod and a driving member. An oil-absorbing sponge is provided in the vent hole. One side surface of the oil-absorbing sponge abuts against the side wall in the axial direction of the vent hole. The sliding rod is slidably connected in the vent hole along the axial direction of the vent hole. One end of the sliding rod abuts against the oil-absorbing sponge. An air outlet channel is coaxially opened on the sliding rod. The driving member is used to drive the sliding of the sliding rod.

[0007] By adopting the above technical solutions, by providing an oil-absorbing sponge in the vent hole, the oil entering the vent hole can be absorbed, reducing the possibility of oil leakage when the gearbox housing exhausts. By driving the sliding of the sliding rod with the driving member, the sliding rod squeezes the oil-absorbing sponge, so that the oil absorbed in the oil-absorbing sponge is extruded, reducing the waste of lubricating oil in the gearbox housing.

[0008] Preferably, an annular groove is opened on the side wall of the vent hole. The circumferential side of the oil-absorbing sponge is located in the annular groove. A pressing block is provided at one end of the sliding rod. The pressing block is slidably connected in the annular groove along the axial direction of the vent hole.

[0009] By adopting the above technical solution, the annular groove limits the position of the oil-absorbing sponge and limits the sliding of the pressing block, reducing the possibility that the pressing block cannot contact the oil-absorbing sponge.

[0010] Preferably, a plurality of first anti-slip particles are provided on the side surface of the pressing block close to the oil-absorbing sponge, and a plurality of second anti-slip particles are provided on the side surface of the annular groove close to the oil-absorbing sponge in the axial direction. The plurality of first anti-slip particles and the plurality of second anti-slip particles are arranged staggeredly.

[0011] By adopting the above technical solution, the oil-absorbing sponge is limited by the first anti-slip particles and the second anti-slip particles, reducing the possibility of the oil-absorbing sponge falling off, and when the pressing block moves towards the oil-absorbing sponge side, the oil-absorbing sponge can be fully squeezed.

[0012] Preferably, the driving member includes a spring. The spring is sleeved on the sliding rod, and the spring always drives the sliding rod to slide towards the oil-absorbing sponge side.

[0013] By adopting the above technical solution, when exhausting, the oil-absorbing sponge absorbs lubricating oil and expands, and the pressure of the air pressure causes the pressing block to slide away from the oil-absorbing sponge side, and the spring is compressed and deformed; when the air pressure inside and outside the gearbox housing is balanced, the spring returns to its original shape, causing the pressing block to slide towards the oil-absorbing sponge side to squeeze the oil-absorbing sponge.

[0014] Preferably, it further includes a sealing block. The sealing block is movably connected in the vent hole. A notch is provided on the sealing block. When the sealing block rotates to the notch facing the air outlet channel, the air outlet channel is connected to the vent hole.

[0015] By adopting the above technical solution, by rotating the sealing block, the air outlet channel is connected to the vent hole to exhaust the inside of the gearbox housing; when the air outlet channel is not connected to the vent hole, the sealing block can block the air outlet channel, reducing the possibility of oil leakage from the gearbox housing.

[0016] Preferably, a sealing portion is provided at one end of the air outlet channel close to the sealing block, and the sealing portion can cooperate with the sealing block.

[0017] By adopting the above technical solution, when the sliding rod slides to abut against the sealing block, the possibility of wearing the sealing block when rotating the sealing block is reduced.

[0018] Preferably, a force application rod is provided on the sealing block. The force application rod is rotatably connected to the housing main body along a direction perpendicular to the axis of the vent hole.

[0019] By adopting the above technical solution, applying force through the force application block facilitates the rotation of the sealing block and plays a role in limiting the rotation of the sealing block.

[0020] The technical effects of the present utility model are mainly reflected in the following aspects:

[0021] 1. By providing an oil-absorbing sponge and a sliding rod, the present utility model can absorb the oil entering the ventilation hole by arranging the oil-absorbing sponge in the ventilation hole, reducing the possibility of oil leakage when the transmission housing exhausts. By driving the sliding of the sliding rod through a driving member, the sliding rod squeezes the oil-absorbing sponge, so that the oil absorbed in the oil-absorbing sponge is extruded, reducing the waste of lubricating oil in the transmission housing;

[0022] 2. By providing an annular groove and a pressing block, the annular groove limits the position of the oil-absorbing sponge and limits the sliding of the pressing block, reducing the possibility that the pressing block cannot contact the oil-absorbing sponge;

[0023] 3. By providing a sealing block, by rotating the sealing block, the air outlet channel is connected to the ventilation hole to exhaust the inside of the transmission housing; when the air outlet channel is not connected to the ventilation hole, the sealing block can block the air outlet channel, reducing the possibility of oil leakage from the transmission housing. Description of the Drawings

[0024] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present application.

[0025] Figure 2 is a schematic diagram of the exhaust structure of an embodiment of the present application.

[0026] Figure 3 is Figure 2 an enlarged view of part A in

[0027] Description of the reference numerals: 1. Main body of the housing; 11. Ventilation hole; 111. Oil-absorbing sponge; 112. Second anti-slip particles; 113. Annular groove; 2. Exhaust mechanism; 21. Sliding rod; 211. Pressing block; 2111. First anti-slip particles; 212. Air outlet channel; 2121. Sealing part; 22. Driving member; 221. Spring; 23. Sealing block; 231. Notch; 232. Force-applying block. Detailed Description of the Embodiment

[0028] The following further describes the present application in detail in conjunction with the attached Figures 1 - 3 drawings to make the technical solution of the present application easier to understand and master.

[0029] An embodiment of the present application discloses a transmission housing.

[0030] Referring to Figures 1 - 3, a transmission housing of this embodiment includes a housing main body 1. An air vent 11 is provided on the housing main body 1. An annular groove 113 is coaxially provided on the circumferential side wall of the air vent 11. An oil-absorbing sponge 111 is placed in the annular groove 113. The circumferential side of the oil-absorbing sponge 111 abuts against the circumferential side of the annular groove 113. One side surface of the oil-absorbing sponge 111 in the axial direction abuts against one side surface of the air vent 11 in the axial direction. It further includes an exhaust mechanism 2 for exhausting the inside of the transmission housing. The exhaust mechanism 2 includes a sliding rod 21 and a driving member 22. The sliding rod 21 is slidably connected in the air vent 11 along the axial direction of the air vent 11. One end of the sliding rod 21 abuts against the oil-absorbing sponge 111. An air outlet channel 212 is coaxially provided on the sliding rod 21. The driving member 22 is used to drive the sliding of the sliding rod 21.

[0031] Referring to Figures 1 - 3 , by providing the oil-absorbing sponge 111 in the air vent 11, the oil entering the air vent 11 can be absorbed, reducing the possibility of oil leakage when the transmission housing exhausts. By driving the sliding of the sliding rod 21 with the driving member 22, the sliding rod 21 squeezes the oil-absorbing sponge 111, so that the oil absorbed in the oil-absorbing sponge 111 is extruded, reducing the waste of lubricating oil in the transmission housing.

[0032] Referring to Figures 1 - 3 , a pressing block 211 is fixedly connected to one end of the sliding rod 21. The pressing block 211 is slidably connected in the annular groove 113 along the axial direction of the air vent 11. The annular groove 113 limits the position of the oil-absorbing sponge 111 and limits the sliding of the pressing block 211, reducing the possibility that the pressing block 211 cannot abut against the oil-absorbing sponge 111. A plurality of first anti-slip particles 2111 are fixedly connected to the side surface of the pressing block 211 close to the oil-absorbing sponge 111. The plurality of first anti-slip particles 2111 are evenly distributed. A plurality of second anti-slip particles 112 are provided on the side surface of the annular groove 113 close to the oil-absorbing sponge 111 in the axial direction of the annular groove 113. The plurality of second anti-slip particles 112 are evenly distributed. The plurality of first anti-slip particles 2111 and the plurality of second anti-slip particles 112 are arranged staggeredly. That is, when the pressing block 211 slides towards the oil-absorbing sponge 111 to the limit position, the plurality of first anti-slip particles 2111 and the plurality of second anti-slip particles 112 do not abut against each other. Through the first anti-slip particles 2111 and the second anti-slip particles 112, the oil-absorbing sponge 111 is limited, reducing the possibility of the oil-absorbing sponge 111 falling off, and when the pressing block 211 moves towards the oil-absorbing sponge 111 side, the oil-absorbing sponge 111 can be fully squeezed.

[0033] Referring to Figures 1 - 3, the driving member 22 includes a spring 221. The spring 221 is sleeved on the sliding rod 21. Two sides of the spring 221 respectively abut against the pressing block 211 and the inner wall of the vent hole 11. The spring 221 always drives the sliding rod 21 to slide towards the oil-absorbing sponge 111. When exhausting, the oil-absorbing sponge 111 absorbs lubricating oil and expands, and the pressure of the air pressure causes the pressing block 211 to slide towards the side away from the oil-absorbing sponge 111, and the spring 221 is compressed and deformed; when the air pressure inside and outside the gearbox housing is balanced, the spring 221 resumes its original shape, causing the pressing block 211 to slide towards the oil-absorbing sponge 111 and squeezing the oil-absorbing sponge 111.

[0034] Refer to Figures 1 - 3 , it further includes a sealing block 23. The sealing block 23 is rotatably connected in the vent hole 11 along the axis direction of the vent hole 11. A notch 231 is formed on the sealing block 23. When the sealing block 23 rotates until the notch 231 faces the air outlet channel 212, the air outlet channel 212 is communicated with the vent hole 11. By rotating the sealing block 23, the air outlet channel 212 is communicated with the vent hole 11 to exhaust the inside of the gearbox housing; when the air outlet channel 212 is not communicated with the vent hole 11, the sealing block 23 can block the air outlet channel 212, reducing the possibility of oil leakage from the gearbox housing.

[0035] Refer to Figures 1 - 3 , a sealing portion 2121 is provided at one end of the air outlet channel 212 close to the sealing block 23. The sealing portion 2121 can cooperate with the sealing block 23. When the sliding rod 21 slides to abut against the sealing block 23, the possibility of wearing the sealing block 23 when rotating the sealing block 23 is reduced. A force application rod is fixedly connected to the side of the sealing block 23 away from the air outlet channel 212. The force application rod is rotatably connected to the housing body 1 along the direction perpendicular to the axis of the vent hole 11. Applying force through the force application block 232 facilitates the rotation of the sealing block 23 and plays a limiting role in the rotation of the sealing block 23.

[0036] Of course, the above are only typical examples of this application. In addition, this application can also have many other specific implementation manners. Any technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of protection required by this application.

Claims

1. A transmission housing, comprising a housing body (1), wherein a ventilation hole (11) is formed in the housing body (1), and it is characterized in that: It further includes an exhaust mechanism (2) which is used for exhausting the inside of the transmission housing. The exhaust mechanism (2) includes a sliding rod (21) and a driving member (22). An oil-absorbing sponge (111) is arranged in the vent hole (11). One side surface of the oil-absorbing sponge (111) abuts against the side wall in the axial direction of the vent hole (11). The sliding rod (21) is slidably connected in the vent hole (11) along the axial direction of the vent hole (11). One end of the sliding rod (21) abuts against the oil-absorbing sponge (111). An air outlet channel (212) is coaxially formed in the sliding rod (21). The driving member (22) is used for driving the sliding of the sliding rod (21).

2. The transmission housing according to claim 1, characterized in that: An annular groove (113) is formed in the side wall of the vent hole (11). The circumferential side of the oil-absorbing sponge (111) is located in the annular groove (113). A pressing block (211) is arranged at one end of the sliding rod (21). The pressing block (211) is slidably connected in the annular groove (113) along the axial direction of the vent hole (11).

3. A transmission housing according to claim 2, characterized in that: A plurality of first anti-slip particles (2111) are arranged on one side surface of the pressing block (211) close to the oil-absorbing sponge (111). A plurality of second anti-slip particles (112) are arranged on one side surface of the annular groove (113) close to the oil-absorbing sponge (111) in the axial direction. The plurality of first anti-slip particles (2111) and the plurality of second anti-slip particles (112) are arranged staggeredly.

4. A transmission housing according to claim 2, wherein: The driving member (22) includes a spring (221). The spring (221) is sleeved on the sliding rod (21). The spring (221) always drives the sliding rod (21) to slide towards the oil-absorbing sponge (111).

5. A transmission housing according to claim 1, characterized in that: It further includes a sealing block (23). The sealing block (23) is movably connected in the vent hole (11). A notch (231) is formed in the sealing block (23). When the sealing block (23) rotates to make the notch (231) opposite to the air outlet channel (212), the air outlet channel (212) is communicated with the vent hole (11).

6. The transmission housing according to claim 5, characterized in that: A sealing portion (2121) is formed at one end of the air outlet channel (212) close to the sealing block (23). The sealing portion (2121) can cooperate with the sealing block (23).

7. A transmission housing according to claim 5, wherein: A force-applying rod is arranged on the sealing block (23). The force-applying rod is rotatably connected to the housing main body (1) along the direction perpendicular to the axial direction of the vent hole (11).

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