CN205207612U - Transfer case vent structure , transfer case and vehicle - Google Patents

Transfer case vent structure , transfer case and vehicle Download PDF

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Publication number
CN205207612U
CN205207612U CN201521107658.9U CN201521107658U CN205207612U CN 205207612 U CN205207612 U CN 205207612U CN 201521107658 U CN201521107658 U CN 201521107658U CN 205207612 U CN205207612 U CN 205207612U
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China
Prior art keywords
transfer case
oil
chamber
gluten
ventilation device
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CN201521107658.9U
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梁磊
龚正伟
李建辉
王鹏
李峰
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Great Wall Motor Co Ltd
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Great Wall Motor Co Ltd
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Abstract

The utility model belongs to the technical field of the transfer case, a transfer case vent structure, transfer case and vehicle is provided. Transfer case vent structure includes spaced apart transfer case ante -chamber and transfer case back cavity, is formed with the chamber of ventilating in the transfer case ante -chamber, and the air vent and transfer case back cavity intercommunication on upper portion are passed through to the chamber of ventilating, and the transfer case back cavity passes through the gas outlet and external atmosphere intercommunication of transfer case bottom, wherein, ventilate chamber top edge and both sides edge are formed with continuous fender oil muscle, and the fixed lid of oil baffle closes on the oily muscle of fender with the closing cap chamber of ventilating, and oil baffle and ventilate and have ventilation gap between the below edge in chamber to inside can preventing when the assurance is ventilated that outside water from entering into the transfer case, the next lubricating oil that prevents effectively that the operation of transfer case internal gear from stirring of cooperation through the oil muscle of the fender on the transfer case casing and oil baffle and fender oil muscle gets into the chamber of ventilating simultaneously, in case the leak -stopping is oily.

Description

Transfer case ventilation device, transfer case and vehicle
Technical field
The utility model relates to transfer case technical field, particularly a kind of transfer case ventilation device, a kind of there is the transfer case of this transfer case ventilation device and a kind of vehicle being provided with this transfer case.
Background technique
At present, on the vehicle of all-wheel drive, in order to the power exported by speed changer can be assigned to each ransaxle, be usually equipped with transfer case.Knownly, the basic structure of transfer case is also a gear train assembly, and its internal structure mainly comprises the component such as drive bevel gear, driven wheel of differential, bearing, oil sealing, axle, and above-mentioned parts all needs specific oil lubrication in operation process.
But, the bevel gear of transfer case inside can produce a large amount of heats at operation process, temperature generally maintains between 110 DEG C-140 DEG C, because temperature raises, transfer case internal pressure will raise, but because the axial confining force of housing to oil sealing is limited, the too high meeting of pressure of transfer case inside makes oil sealing shift in position, produce Leakage.Therefore, in order to make transfer case internal pressure keep balance, just needing ventilation device and the gas in transfer case is correspondingly discharged, meanwhile, owing to having a large amount of lubricant oil and component in transfer case, thus requiring that ventilation device has certain water-proof function.
And transfer case adopts the simple traditional vent plug of structure substantially at present, this breather plug is arranged in the peak of said mechanism, the inside and outside pressure equilibrium of balance.But transmission breather plug then has following deficiency:
First, for cross-country type vehicle, because its driving cycle is general more severe, the road conditions such as such as sandstone, muddy water, river, therefore have higher requirement to the fordability of car load, in general paddling of this kind of vehicle is highly 500mm (now water level has exceeded the peak of transfer case).But when water level of paddling is too high, when supposing water level more than 500mm, now water level has exceeded the position of breather plug, if breather plug is just in time in enable possition, when water in breather plug closing course can enter into transfer case inside from the gap between the cock cap opened and cock body, cause transfer case inner components to be got rusty, affect the FCL life-span.
The second, the internal structure of traditional vent plug is furnished with rubber parts, and the surrounding of transfer case is furnished with high temperature part usually, and the gas temperature of adding transfer case discharge is higher, makes the rubber parts of traditional vent plug there is the risk of ageing failure, causes venting capability to reduce.
Model utility content
In view of this, the utility model is intended to propose a kind of transfer case ventilation device, preventing outside water from entering into transfer case inside while ensureing ventilation, effectively prevent the lubricant oil of transfer case internal gear running stirring from entering venting cavity, in case leak-stopping is oily by the cooperation of the leakproof oil gluten on transfer case housing and oil baffle and leakproof oil gluten simultaneously.
For achieving the above object, the technical solution of the utility model is achieved in that
A kind of transfer case ventilation device, described transfer case ventilation device comprises isolated transfer case ante-chamber and transfer case back cavity, venting cavity is formed in described transfer case ante-chamber, described venting cavity is communicated with described transfer case back cavity by the vent on top, and described transfer case back cavity is communicated with ambient atmosphere by the air outlet bottom transfer case; Wherein, described venting cavity top edges and both sides of the edge are formed with continuous print leakproof oil gluten, and oil baffle fixed cover is combined in venting cavity described in capping on described leakproof oil gluten, and have airspace between the lower edge of described oil baffle and described venting cavity.
Relative to prior art, in transfer case ventilation device described in the utility model, because the venting cavity in transfer case ante-chamber can be communicated with transfer case back cavity by the vent on top, transfer case back cavity then can be communicated with ambient atmosphere by the air outlet bottom transfer case, simultaneously, oil baffle covers on the leakproof oil gluten around venting cavity and with the lower edge of venting cavity has airspace, like this, when normal vehicle operation, the lubricant oil that transfer case running is splashed can't enter in venting cavity from the top of venting cavity and both sides, prevent transfer case leakage of oil, simultaneously, the heat that transfer case running produces will make transfer case ante-chamber internal pressure raise, gas enters in venting cavity by the airspace between oil baffle and the lower edge of venting cavity, transfer case back cavity is entered into subsequently through vent, then air is disposed to from air outlet, to balance pressure inside and outside transfer case, when traveling paddled by vehicle, gas exhaust path is identical with above-described, now, unlike, after the gas discharged enters transfer case back cavity by vent, (now transfer case back cavity exists water), will force the water level decreasing in transfer case back cavity, and the gas of discharge is emerged with the air outlet bottom the form transfer case of bubble, and when vehicle is paddled darker, water level will not have transfer case, now water will enter in transfer case back cavity from air outlet, and raise along with the rising of water level.But now remain in operation in transfer case inside, to continue to produce pressurized gas, due to the discharge effect of pressurized gas, water level in transfer case back cavity will keep balance, and lower than the vent above transfer case back cavity, thus make water can't enter transfer case inside by this vent, preventing outside water from entering into transfer case inside while ensureing ventilation.
Further, described venting cavity both sides of the edge place is formed with installation base respectively, and the attachment face of described installation base flushes with described leakproof oil gluten, and described oil baffle to be fixedly connected on described installation base and to cover on described leakproof oil gluten.
Further, described installation base is arranged on the front end towards described transfer case ante-chamber center of the described leakproof oil gluten on described both sides of the edge, to form a part for the described leakproof oil gluten on described both sides of the edge.
Further, two described installation bases are formed and extend towards described transfer case ante-chamber center, and gear oil close to each other is protruding, and plate face and the described oil projection of keeping off of described oil baffle are fitted.
Further, or selectively, described oil baffle extends beyond the described lower edge of described venting cavity, subsequently, described oil baffle towards the internal bend of described transfer case ante-chamber to be formed and the bend section of described lower edge space overlap, form gear oil-gap between the outer surface of described bend section and described lower edge, described gear oil-gap and described airspace communicate.
Further, the below inner peripheral surface of described venting cavity is downward-sloping towards opening end from its bottom end; And/or, the position that described lower edge is overlapping with described bend section is formed with drain tap.
Further, or selectively, the described top edges of described venting cavity and described both sides of the edge are also formed with the gear oil flange extended continuously, and described gear oil flange is positioned at the outside of described leakproof oil gluten and around described leakproof oil gluten, is contained in the oily flange of described gear to make described oil baffle.
Further, or selectively, the position that described transfer case back cavity corresponds to the oil sealing chamber of transfer case oil sealing is formed with oil sealing opening, and the described oil sealing chamber of described transfer case oil sealing is communicated with described transfer case back cavity by described oil sealing opening.
In addition, the utility model provides a kind of transfer case, and described transfer case is provided with above arbitrary described transfer case structure.
As above, this transfer case has good venting capability, water-proof performance and oil-leakage-prevention performance.
In addition, the utility model also provides a kind of vehicle, and described vehicle set has above-described transfer case.
As above, by this transfer case, the fordability of this vehicle obviously gets a promotion, and considerably improves cross-country ability and the market competitiveness of vehicle.
Other features and advantages of the utility model are described in detail in embodiment part subsequently.
Accompanying drawing explanation
The accompanying drawing forming a part of the present utility model is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the schematic diagram of the transfer case ventilation device described in the utility model embodiment, shows the structure of transfer case ante-chamber;
Fig. 2 is the partial structurtes schematic diagram of Fig. 1;
The venting cavity that Fig. 3 is the transfer case ventilation device described in the utility model embodiment and the structural representation that oil baffle coordinates;
Fig. 4 is another visual angle schematic diagram of the transfer case ventilation device of Fig. 1, shows the structure of transfer case back cavity;
Fig. 5 is the structural representation of the oil baffle of the transfer case ventilation device described in the utility model embodiment.
Description of reference numerals:
1-transfer case ante-chamber, 2-transfer case back cavity, 3-venting cavity, 4-vent, 5-air outlet, 6-top edges, 7-both sides of the edge, 8-leakproof oil gluten, 9-oil baffle, 10-lower edge, 11-installation base, 12-gear oil is protruding, and 13-bend section, 14-keeps off oil-gap, 15-airspace.Inner peripheral surface below 16-, 17-drain tap, 18-keeps off oily flange, 19-oil sealing opening, 20-stiffening rib, 21-oil sealing assembly department.
Embodiment
It should be noted that, when not conflicting, the embodiment in the utility model and the feature in embodiment can combine mutually.
Below with reference to the accompanying drawings and describe the utility model in detail in conjunction with the embodiments.
As Fig. 1,2, shown in 3 and 4, the transfer case ventilation device that the utility model provides comprises to be separated the housing of transfer case with the isolated transfer case ante-chamber 1 obtained and transfer case back cavity 2, wherein, venting cavity 3 is formed in transfer case ante-chamber 1, venting cavity 3 is communicated with transfer case back cavity 2 by the vent 4 on top, and transfer case back cavity 2 is communicated with ambient atmosphere by the air outlet 5 bottom transfer case; And wherein, venting cavity 3 top edges 6 and both sides of the edge 7 are formed with continuous print leakproof oil gluten 8, and oil baffle 9 fixed cover is combined in capping venting cavity 3 on leakproof oil gluten 8, and have airspace 15 between the lower edge 10 of oil baffle 9 and venting cavity 3.
Like this, by this technological scheme, because the venting cavity 3 in transfer case ante-chamber 1 can be communicated with transfer case back cavity 2 by the vent 4 on top, transfer case back cavity 2 then can be communicated with ambient atmosphere by the air outlet 5 bottom transfer case, simultaneously, oil baffle 9 covers on the leakproof oil gluten 8 around venting cavity 3 and with the lower edge 10 of venting cavity 3 has airspace 15, like this, when normal vehicle operation, due to covering of leakproof oil gluten 8 and leakproof oil gluten 8 and oil baffle 9, the lubricant oil that transfer case running is splashed can't enter in venting cavity 3 from the top of venting cavity 3 and both sides, prevent transfer case leakage of oil, simultaneously, the heat that transfer case running produces will make inner 1 pressure of transfer case ante-chamber raise, gas enters in venting cavity 3 by the airspace 15 between oil baffle 9 and the lower edge 10 of venting cavity 3, transfer case back cavity 2 is entered into subsequently through vent 4, then air is disposed to from air outlet 5, to balance pressure inside and outside transfer case, when traveling paddled by vehicle, gas exhaust path is identical with above-described, now, unlike, after the gas discharged enters transfer case back cavity 2 by vent 4, (now transfer case back cavity 2 exists water), will force the water level decreasing in transfer case back cavity 2, and the gas of discharge is emerged with the air outlet 5 bottom the form transfer case of bubble, and when vehicle is paddled darker, water level will not have transfer case, now water will enter in transfer case back cavity 2 from air outlet 5, and raise along with the rising of water level.But now remain in operation in transfer case inside, to continue to produce pressurized gas, due to the discharge effect of pressurized gas, water level in transfer case back cavity 2 will keep balance, and lower than the vent 4 above transfer case back cavity 2, thus make water can't enter transfer case inside by this vent 4, preventing outside water from entering into transfer case inside while ensureing ventilation.
Certainly, in transfer case ventilation device of the present utility model, the fit system of the leakproof oil gluten 8 of the circumferential edge of oil baffle 9 and venting cavity 3 can have many middle structural type, covers as long as can realize both, enters in venting cavity 3 from both covering to prevent the lubricant oil splashed.
Such as, oil baffle 9 can weld or be connected on the leakproof oil gluten 8 of venting cavity 3, or, in certain preferred structural type, for the ease of assembling and manufacture, as shown in Figure 2, venting cavity 3 both sides of the edge 7 place is formed with installation base 11 respectively, the attachment face of installation base 11 flushes with leakproof oil gluten 8, oil baffle 9 to be fixedly connected on installation base 11 and to cover on leakproof oil gluten 8, such as, installation base 11 is formed with threaded mounting hole, oil baffle 9 is formed with corresponding mounting hole as shown in Figure 5, bolt can coordinate with threaded mounting hole through mounting hole, with on the attachment face that the plate face of oil baffle 9 is fitted in installation base 11 and leakproof oil gluten 8, like this, when needing cleaning venting cavity 3, only need to back out bolt and pull down oil baffle 9.
Further, in order to make more compact structure, reduce taking up room of installation base 11 and leakproof oil gluten 8, as shown in Figure 2, installation base 11 is arranged on the front end towards transfer case ante-chamber 1 center of the leakproof oil gluten 8 on both sides of the edge 7, to form a part for the leakproof oil gluten 8 on both sides of the edge 7, namely, the installation base 11 of both sides is formed as the front end of the leakproof oil gluten 8 on both sides of the edge 7, like this, installation base 11 not only can fastening mounting block oiled-plate method 9, simultaneously, due to the self structure of installation base 11, the structural strength of the front end of leakproof oil gluten 8 can also be strengthened.
As shown in Figure 2, further, venting cavity 3 is entered from the lower edge of installation base 11 in order to prevent the lubricant oil of circumference sputtering, preferably, two installation bases 11 are formed and extend towards transfer case ante-chamber 1 center, and gear oil protruding 12 close to each other, and the plate face of oil baffle 9 and gear oil protruding 12 are fitted, like this, by the gear oil protruding 12 of both sides, can prevent the lubricant oil splashed from entering venting cavity 3 further.
In addition, on above arbitrary described basis, as shown in Figure 3, oil baffle 9 extends beyond the lower edge 10 of venting cavity 3, subsequently, oil baffle 9 towards the internal bend of transfer case ante-chamber 1 to be formed and the bend section 13 of lower edge 10 space overlap, gear oil-gap 14 is formed between the outer surface of bend section 13 and lower edge 10, gear oil-gap 14 passes to formation labyrinth shape mutually with airspace 15, like this, during gas discharging in transfer case ante-chamber 1, can enter in venting cavity 3 from gear oil-gap 14 and airspace 15 and enter in transfer case back cavity 2 by vent 4, discharge from air outlet 5 subsequently, simultaneously, due to the effect of bend section 13, can prevent the lubricant oil splashed from entering in venting cavity 3 from the lower edge 10 of venting cavity 3, thus considerably improve the oil-leakage-prevention performance of vehicle when complex road condition is such as left-leaning.
Further, or selectively, when a small amount of lubricant oil enters venting cavity 3 due to various factors, spill from vent 4 to prevent lubricant oil, preferably, the below inner peripheral surface 16 of venting cavity 3 is downward-sloping (although show below inner peripheral surface 16 level Fig. 3 towards opening end from its bottom end, but, can understand, below inner peripheral surface 6 can as described in downward-sloping and there is obvious oil return effect), like this, because below inner peripheral surface 16 is downward-sloping, a small amount of lubricant oil can be back in transfer case ante-chamber 1 from airspace 15 rapidly, and/or, in order to improve the effect of oil return, preferably, as shown in Figures 2 and 3, the position that lower edge 10 is overlapping with bend section 13 is formed with drain tap 17, so that the backflow of lubricant oil, now, due to blocking of bend section 13 pairs of drain taps 17, the outside lubricant oil splashed can't directly enter in venting cavity 3.
In addition, on above-described arbitrary basis, as shown in Figure 1, what the lubricant oil splashed to prevent circumference impacted oil baffle 9 and leakproof oil gluten 8 covers place, preferably, the top edges 6 of venting cavity 3 and both sides of the edge 7 are also formed with the gear oil flange 18 extended continuously, keep off oily flange 18 be positioned at leakproof oil gluten 8 outside and around leakproof oil gluten 8, keep off oily flange 18 can and leakproof oil gluten 8 there is rational interval, be contained in the oily flange 18 of gear to make oil baffle 9, like this, owing to keeping off the barrier effect of oily flange 18, what the lubricant oil that circumference is splashed directly did not impact oil baffle 9 and leakproof oil gluten 8 covers place, thus can effectively prevent lubricant oil from penetrating in venting cavity 3 from oil baffle 9 and covering of leakproof oil gluten 8.
In addition, on above-described arbitrary basis, as shown in Figure 4, in order to improve the utilization ratio of air outlet 5 and transfer case back cavity 2, and prevent the oil sealing of transfer case from producing negative pressure and causing oil sealing to move, preferably, the position that transfer case back cavity 2 corresponds to the oil sealing chamber of transfer case oil sealing is formed with oil sealing opening 19, as shown in Figure 4, when oil sealing is installed at oil sealing assembly department 21 place, the chamber wall in the oil sealing chamber between two axial oil sealings forms oil sealing opening 19, be communicated with transfer case back cavity 2 by oil sealing opening 19 to make the oil sealing chamber of transfer case oil sealing, thus eliminate in transfer case operation process, there is negative pressure and move and cause the problem of leakage of oil in oil sealing.
In addition, as shown in Figure 4, in order to improve the intensity of the housing of transfer case back cavity 2, preferably, transfer case back cavity 2 inner circumferential interval is furnished with multiple stiffening rib 20, such as stiffening plate, simultaneously, for the ease of the discharge of exhaust, preferably, multiple stiffening rib 20 runs through and has multiple opening, such as air holes, and/or in other structures, the height of each stiffening rib 20 is lower than the degree of depth of transfer case back cavity 2.
In addition, on the basis of above-described transfer case aeration structure, the utility model provides a kind of transfer case, and wherein, this transfer case is provided with above arbitrary described transfer case structure.As above, this transfer case has good venting capability, water-proof performance and oil-leakage-prevention performance.
Certainly, the utility model also provides a kind of vehicle, and this vehicle set has above-described transfer case.In like manner, as above, by this transfer case, the fordability of this vehicle obviously gets a promotion, and considerably improves cross-country ability and the market competitiveness of vehicle.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.

Claims (10)

1. a transfer case ventilation device, it is characterized in that, described transfer case ventilation device comprises isolated transfer case ante-chamber (1) and transfer case back cavity (2), venting cavity (3) is formed in described transfer case ante-chamber (1), described venting cavity (3) is communicated with described transfer case back cavity (2) by the vent (4) on top, and described transfer case back cavity (2) is communicated with ambient atmosphere by the air outlet (5) bottom transfer case;
Wherein, described venting cavity (3) top edges (6) and both sides of the edge (7) are formed with continuous print leakproof oil gluten (8), oil baffle (9) fixed cover is combined in venting cavity described in capping (3) on described leakproof oil gluten (8), and has airspace (15) between the lower edge (10) of described oil baffle (9) and described venting cavity (3).
2. transfer case ventilation device according to claim 1, it is characterized in that, described venting cavity (3) both sides of the edge (7) place is formed with installation base (11) respectively, the attachment face of described installation base (11) flushes with described leakproof oil gluten (8), and described oil baffle (9) is fixedly connected on described installation base (11) and goes up and cover on described leakproof oil gluten (8).
3. transfer case ventilation device according to claim 2, it is characterized in that, described installation base (11) is arranged on the front end towards described transfer case ante-chamber (1) center of the described leakproof oil gluten (8) on described both sides of the edge (7), to form a part for the described leakproof oil gluten (8) on described both sides of the edge (7).
4. transfer case ventilation device according to claim 3, it is characterized in that, two described installation bases (11) are formed and extend towards described transfer case ante-chamber (1) center, and gear oil protruding (12) close to each other, plate face and the described oil protruding (12) that keeps off of described oil baffle (9) are fitted.
5. according to the transfer case ventilation device in claim 1-4 described in any one, it is characterized in that, described oil baffle (9) extends beyond the described lower edge (10) of described venting cavity (3), described oil baffle (9) towards the internal bend of described transfer case ante-chamber (1) to be formed and the bend section (13) of described lower edge (10) space overlap, gear oil-gap (14) is formed between the outer surface of described bend section (13) and described lower edge (10), described gear oil-gap (14) and described airspace (15) communicate.
6. transfer case ventilation device according to claim 5, is characterized in that, the below inner peripheral surface (16) of described venting cavity (3) is downward-sloping towards opening end from its bottom end; And/or,
The position that described lower edge (10) is overlapping with described bend section (13) is formed with drain tap (17).
7. transfer case ventilation device according to claim 1, it is characterized in that, the described top edges (6) of described venting cavity (3) and described both sides of the edge (7) are also formed with gear oil flange (18) extended continuously, the oily flange of described gear (18) is positioned at the outside of described leakproof oil gluten (8) and around described leakproof oil gluten (8), is contained in the oily flange of described gear (18) to make described oil baffle (9).
8. transfer case ventilation device according to claim 1, it is characterized in that, described transfer case back cavity (2) is formed with oil sealing opening (19) corresponding to the position in the oil sealing chamber of transfer case oil sealing, and the described oil sealing chamber of described transfer case oil sealing is communicated with described transfer case back cavity (2) by described oil sealing opening (19).
9. a transfer case, is characterized in that, described transfer case is provided with according to the transfer case structure in claim 1-8 described in any one.
10. a vehicle, is characterized in that, the with good grounds transfer case according to claim 9 of described vehicle set.
CN201521107658.9U 2015-12-25 2015-12-25 Transfer case vent structure , transfer case and vehicle Active CN205207612U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201521107658.9U CN205207612U (en) 2015-12-25 2015-12-25 Transfer case vent structure , transfer case and vehicle

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Application Number Priority Date Filing Date Title
CN201521107658.9U CN205207612U (en) 2015-12-25 2015-12-25 Transfer case vent structure , transfer case and vehicle

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CN205207612U true CN205207612U (en) 2016-05-04

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109424727A (en) * 2017-08-31 2019-03-05 长城汽车股份有限公司 Retarder ventilation device and retarder
CN110397725A (en) * 2018-04-24 2019-11-01 德昌电机(深圳)有限公司 Mechanism housing, transmission case and actuator

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109424727A (en) * 2017-08-31 2019-03-05 长城汽车股份有限公司 Retarder ventilation device and retarder
CN109424727B (en) * 2017-08-31 2020-06-16 长城汽车股份有限公司 Speed reducer ventilation structure and speed reducer
CN110397725A (en) * 2018-04-24 2019-11-01 德昌电机(深圳)有限公司 Mechanism housing, transmission case and actuator
CN110397725B (en) * 2018-04-24 2022-03-22 德昌电机(深圳)有限公司 Transmission case casing, transmission case and actuator

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