CN210135223U

CN210135223U - Power assembly and vehicle with same

Info

Publication number: CN210135223U
Application number: CN201920992073.1U
Authority: CN
Inventors: 李迎宏; 赵春艳; 朱波
Original assignee: Beijing Electric Vehicle Co Ltd
Current assignee: Beijing Electric Vehicle Co Ltd
Priority date: 2019-06-27
Filing date: 2019-06-27
Publication date: 2020-03-10
Anticipated expiration: 2029-06-27

Abstract

The utility model discloses a power assembly and have its vehicle. This power assembly includes: driving motor, reduction gear and structure of taking a breath, driving motor are equipped with the motor flange, and the reduction gear is equipped with the reduction gear flange, forms the sealed cavity of flange between reduction gear flange and the motor flange, and the downside of the sealed cavity of flange is equipped with the air vent, and the structure of taking a breath communicates the cavity and the sealed cavity of flange of reduction gear. According to the utility model discloses power assembly sets up the structure of taking a breath of normal open through the top at reduction gear and flange seal cavity to below at flange seal cavity sets up with external communicating air vent, thereby realizes that the inside pressure of reduction gear can constantly be with external keep balance, and then guarantees that reduction gear operational environment is better, has guaranteed that power assembly works the reliability height. And when the power assembly wades, can reliably prevent that water from getting into the reduction gear, prevent that the lubricating oil in the reduction gear from taking place the emulsification.

Description

Power assembly and vehicle with same

Technical Field

The utility model relates to a vehicle technical field particularly, relates to a power assembly and have its vehicle.

Background

In order to balance the pressure difference between the inside and the outside of the reduction gear in the power train, it is necessary to provide a ventilation structure in the reduction gear. At present, most ventilation structures are one-way vent plugs which are arranged at the upper end of the outer part of the speed reducer.

However, because the oil seal of the speed reducer is sensitive to pressure difference, the opening pressure of the one-way vent plug cannot be too large, so that water can enter the speed reducer from the vent plug when the vehicle is in a wading working condition, and lubricating oil in the speed reducer is emulsified.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the above-mentioned technical problem among the prior art to a certain extent at least. Therefore, the utility model provides a power assembly is equipped with the structure of taking a breath that supplies the balanced internal pressure difference of reduction gear on this power assembly, and the cavity and the sealed cavity of flange of structure intercommunication reduction gear of taking a breath prevent that water from entering into in the reduction gear.

The utility model also provides a vehicle of having above-mentioned power assembly.

According to the utility model discloses power assembly includes: driving motor, reduction gear and structure of taking a breath, driving motor is equipped with the motor flange, the reduction gear is equipped with the reduction gear flange, the edge of reduction gear flange be suitable for with the edge laminating cooperation of motor flange, with the reduction gear flange with form the sealed cavity of flange between the motor flange, the downside of the sealed cavity of flange is equipped with the air vent, the structure of taking a breath is located the reduction gear with the top of the sealed cavity of flange, just the structure of taking a breath intercommunication the cavity of reduction gear with the sealed cavity of flange.

According to the utility model discloses power assembly sets up the structure of taking a breath of normal open through the top at reduction gear and flange seal cavity to below at flange seal cavity sets up with external communicating air vent, thereby realizes that the inside pressure of reduction gear can constantly be with external keep balance, and then guarantees that reduction gear operational environment is better, has guaranteed that power assembly works the reliability height. And when the power assembly wades, can reliably prevent that water from getting into the reduction gear, prevent that the lubricating oil in the reduction gear from taking place the emulsification.

According to some embodiments of the present invention, an air outlet is provided above the speed reducer, the air outlet being in communication with the cavity of the speed reducer; the air inlet is arranged above the flange of the speed reducer and communicated with the sealed cavity of the flange, and the air exchange structure is communicated with the air outlet and the air inlet.

Further, the ventilation structure includes: the air exchange device comprises an air exchange pipe, an air outlet clamp and an air inlet clamp, wherein one end of the air exchange pipe is fixed to the air outlet through the air outlet clamp, and the other end of the air exchange pipe is fixed to the air inlet through the air inlet clamp.

Specifically, the ventilation structure includes: the air exchange pipe is provided with a first joint which is suitable for being matched with the air outlet joint and a second joint which is suitable for being matched with the air inlet joint.

Specifically, the ventilation pipe is a metal pipe or an engineering plastic pipe or a rubber pipe.

According to some embodiments of the invention, the vent hole is located on one of the reducer flange or the motor flange.

According to some embodiments of the utility model, the air vent is located the reduction gear flange with on the motor flange binding face.

According to some embodiments of the invention, the ventilation structure is a ventilation duct formed on the housing of the reducer.

According to some embodiments of the invention, the ventilation structure is a vent plug, the vent plug being arranged on the upper cavity wall of the flange seal cavity.

According to another aspect embodiment of the present invention, a vehicle includes the powertrain described above.

The vehicle and the powertrain have the same advantages compared with the prior art, and are not described in detail herein.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

FIG. 1 is a schematic illustration of a powertrain;

FIG. 2 is a schematic view from a first perspective of the retarder;

FIG. 3 is a schematic illustration from a second perspective of the retarder;

FIG. 4 is a disassembled schematic view of the speed reducer and the breather structure;

FIG. 5 is a simplified schematic illustration of the speed reducer with breather structure and flange seal cavity under wading conditions of the vehicle.

Reference numerals:

the device comprises a power assembly 10, a driving motor 1, a motor flange 11, a speed reducer 2, an air outlet 21, a speed reducer flange 22, a flange sealing cavity 3, a vent hole 4, a ventilation structure 5, a ventilation pipe 51, a first joint 511, a second joint 512, an air outlet joint 52 and an air inlet joint 53.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

A power assembly 10 according to an embodiment of the present invention is described in detail below with reference to fig. 1-5.

Referring to fig. 1, a powertrain 10 according to an embodiment of the present invention may include: driving motor 1, reduction gear 2 and ventilation structure 5, driving motor 1 passes through the actuating shaft with reduction gear 2 and is connected to guarantee that driving motor 1's power can transmit in reduction gear 2, wherein, reduction gear 2 comprises shell and gear assembly, and the gear assembly is located the casing, and the inside vacuole formation of casing, ventilation structure 5 is located between reduction gear 2 and driving motor 1, balances the inside and outside pressure differential of reduction gear 2.

Specifically, as shown in fig. 1, a motor flange 11 is provided on the housing of the driving motor 1, a reducer flange 22 is provided on the housing of the reducer 2, the edge of the reducer flange 22 is adapted to fit with the edge of the motor flange 11, a flange sealing cavity 3 is formed between the reducer flange 22 and the motor flange 11, namely, the driving motor 1 and the reducer 2 are matched with the reducer flange 22 through the motor flange 11 to realize the fixed connection of the driving motor 1 and the reducer 2, in addition, the motor flange 11 and the reducer flange 22 are connected by sealing and fitting, so that water can be prevented from being immersed between the motor flange 11 and the reducer flange 22, and the surface of the motor flange 11 and the surface of the reducer flange 22 have empty grooves, so that a flange sealing cavity 3 is formed between the motor flange 11 and the reducer flange 22 after the motor flange 11 is connected with the reducer flange 22.

Further, as shown in fig. 4, a vent hole 4 is formed in the lower side of the flange sealing cavity 3, the vent hole 4 is communicated with the outside and the flange sealing cavity 3, and the ventilation structure 5 is located above the speed reducer 2 and the flange sealing cavity 3, so as to ensure that the lubricating oil in the speed reducer 2 leaks from the ventilation structure 5, and the ventilation structure 5 is communicated with the cavity of the speed reducer 2 and the flange sealing cavity 3, so that when the speed reducer 2 is operated and heated, the pressure in the cavity of the speed reducer 2 is released into the flange sealing cavity 3 through the ventilation structure 5, and the pressure in the flange sealing cavity 3 is released into the outside through the vent hole 4, so as to achieve the air pressure balance of the speed reducer 2, and the cavity of the speed reducer 2 and the flange sealing cavity 3 are constantly kept communicated through the ventilation structure 5, and further ensure that.

In the embodiment, when the vehicle is in wading condition, if the power assembly 10 is submerged by water, as shown in fig. 5, since the air pressure in the cavity of the speed reducer 2 is the same as the air pressure in the flange seal cavity 3, and the flange seal cavity 3 is only communicated with the outside through the vent hole 4, the air pressure in the flange seal cavity 3 can prevent water from entering from the vent hole, thereby preventing water from entering the power assembly 10. Even if the power assembly 10 is in water for a long time, after the speed reducer 2 meets cold water for a long time, the temperature difference causes the air in the cavity of the speed reducer 2 to be cooled, so that the pressure is reduced, and the pressure in the flange sealing cavity 3 is relatively reduced because the air exchange structure 5 is normally open. Therefore, a part of water is sucked into the flange sealing cavity 3 from the vent hole 4, but the water is in the flange sealing cavity 3, and the vent structure is positioned above the speed reducer 2 and the flange sealing cavity 3, so that the water in the flange sealing cavity 3 is difficult to reach the air exchange structure 5, and the power assembly 10 can be effectively prevented from being broken down due to water inflow under the wading condition of the vehicle. And, when the vehicle drives out the wading condition, along with the operation of reduction gear 2, and vent 4 is located the below of flange seal cavity 3, therefore, the water in flange seal cavity 3 can discharge more rapidly.

According to the utility model discloses power assembly 10 sets up normal open ventilation structure 5 through the top at reduction gear 2 and flange seal cavity 3 to set up and communicate with each other air vent 4 with the external world in the below of flange seal cavity 3, thereby realize that 2 inside pressures of reduction gear can constantly be with external keep balanced, and then guarantee that 2 operational environment of reduction gear is better, guaranteed that the reliability of power assembly 10 work is high. Further, when the powertrain 10 wades into the water, it is possible to reliably prevent the water from entering the reduction gear 2 and to prevent the lubricating oil in the reduction gear 2 from emulsifying.

In the first embodiment, as shown in fig. 3, an air outlet 21 is provided above the speed reducer 2, the air outlet 21 communicates with the cavity of the speed reducer 2, an air inlet is provided above the flange 22 of the speed reducer, the air inlet communicates with the flange seal cavity 3, and the air exchange structure 5 communicates the air outlet 21 with the air inlet, so that the communication between the cavity of the speed reducer 2 and the flange seal cavity 3 is realized.

Further, in one embodiment, the ventilation structure 5 may comprise: the pipe 51 of taking a breath, the gas outlet clamp, the air inlet clamp, the one end and the gas outlet 21 of pipe 51 of will taking a breath of gas outlet clamp are fixed, the other end and the air inlet of pipe 51 of will taking a breath of air inlet clamp are fixed, that is to say, the gas outlet clamp links to each other the back with gas outlet 21 and air inlet respectively with the air inlet clamp, the both ends of pipe 51 of taking a breath link to each other with gas outlet clamp and air inlet clamp respectively again to realize 2 cavitys of reduction gear and the intercommunication of the sealed cavity.

Alternatively, in a second embodiment, as shown in fig. 4, the ventilation structure 5 may comprise: the air exchange pipe 51 is provided with a first joint 511 suitable for being matched with the air outlet joint 52 and a second joint 512 suitable for being matched with the air inlet joint 53, namely, after the air outlet joint 52 and the air inlet joint 53 are respectively connected with the air outlet 21 and the air inlet, the first joint 511 of the air exchange pipe 51 is connected with the air outlet joint 52, and the second joint 512 of the air exchange pipe 51 is connected with the air inlet joint 53, so that the communication between the cavity of the speed reducer 2 and the flange sealing cavity 3 is realized.

It should be noted that the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

Specifically, the ventilation pipe 51 is a metal pipe, an engineering plastic pipe or a rubber pipe, so that the ventilation pipe 51 is ensured to have good sealing performance, and the ventilation pipe 51 is prevented from leaking.

In a specific embodiment, the vent hole 4 may be located on one of the reducer flange 22 or the motor flange 11, that is, the vent hole 4 may be located on the lower side of the reducer flange 22 or the lower side of the motor flange 11, and both the vent hole 4 and the outside can be communicated.

Alternatively, as shown in fig. 3, the vent hole 4 may also be located on the abutting surface of the reducer flange 22 and the motor flange 11, and since the reducer flange 22 is in sealing abutting connection with the motor flange 11, the vent hole 4 is disposed on the abutting surface of the reducer flange 22 and the motor flange 11, and after the reducer flange 22 is in abutting connection with the motor flange 11, the vent hole 4 is the only channel communicated with the outside, thereby ensuring that the pressure in the power assembly 10 is balanced with the outside.

In the third embodiment, the ventilation structure 5 may be a ventilation channel formed on the casing of the speed reducer 2, that is, an internal ventilation channel is provided above the casing of the speed reducer 2, and the ventilation channel communicates the cavity of the speed reducer 2 with the flange sealing cavity 3, so as to ensure that the pressure in the speed reducer 2 is kept balanced with the outside. By providing the ventilation structure 5 as a ventilation duct in the casing of the reduction gear 2, damage to the ventilation structure 5 can be prevented, and the cost of the powertrain 10 can be reduced.

In the fourth embodiment, the ventilation structure 5 may be a vent plug, the vent plug is disposed on the upper cavity wall of the flange seal cavity 3, and the vent plug communicates the cavity of the speed reducer 2 with the flange seal cavity 3, so as to ensure that the pressure inside the speed reducer 2 is kept balanced with the outside.

According to another aspect of the present invention, a vehicle includes the powertrain 10 of the above-described embodiment.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example" or "some examples" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims

1. A powertrain (10), comprising:

the driving motor (1), the said driving motor (1) has motor flanges (11);

the reducer (2) is provided with a reducer flange (22), the edge of the reducer flange (22) is suitable for being fitted and matched with the edge of the motor flange (11), a flange sealing cavity (3) is formed between the reducer flange (22) and the motor flange (11), and the lower side of the flange sealing cavity (3) is provided with a vent hole (4);

the air exchange structure (5), the air exchange structure (5) is located the speed reducer (2) with the top of the flange seal cavity (3), just the air exchange structure (5) communicates the cavity of the speed reducer (2) with the flange seal cavity (3).

2. The powertrain (10) according to claim 1, characterized in that an air outlet (21) is arranged above the reducer (2), and the air outlet (21) is communicated with the cavity of the reducer (2);

an air inlet is formed in the upper portion of the speed reducer flange (22), the air inlet is communicated with the flange sealing cavity (3), and the air exchange structure (5) is communicated with the air outlet (21) and the air inlet.

3. The powertrain (10) of claim 2, wherein the air exchange structure (5) comprises: the air exchange device comprises an air exchange pipe (51), an air outlet clamp and an air inlet clamp, wherein one end of the air exchange pipe (51) is fixed to the air outlet (21) through the air outlet clamp, and the other end of the air exchange pipe (51) is fixed to the air inlet through the air inlet clamp.

4. The powertrain (10) of claim 2, wherein the air exchange structure (5) comprises: a gas exchange tube (51), a gas outlet connection (52), a gas inlet connection (53), the gas outlet connection (52) being connected to the gas outlet (21), the gas inlet connection (53) being connected to the gas inlet, the gas exchange tube (51) being provided with a first connection (511) adapted to cooperate with the gas outlet connection (52) and a second connection (512) adapted to cooperate with the gas inlet connection (53).

5. The powertrain (10) according to claim 3 or 4, characterized in that the scavenging duct (51) is a metal or engineered plastic or rubber tube.

6. A powertrain (10) according to claim 1, characterized in that the breather hole (4) is located on one of the retarder flange (22) or the motor flange (11).

7. The powertrain (10) of claim 1, wherein the vent hole (4) is located on the abutting surface of the reducer flange (22) and the motor flange (11).

8. A power assembly (10) according to claim 1, characterized in that the scavenging structure (5) is a scavenging duct formed on the housing of the retarder (2).

9. A power pack (10) according to claim 1, wherein the breather arrangement (5) is a breather plug arranged on an upper chamber wall of the flange seal cavity (3).

10. A vehicle, characterized by comprising a powertrain (10) according to any one of claims 1-9.