Gearbox waterproof device and vehicle

Abstract

The embodiment of the utility model provides a gearbox waterproof device and a vehicle, and the gearbox waterproof device comprises an elastic air bag which is provided with an air bag opening used for communicating with a gearbox; the metal sheath is arranged on the outer side of the elastic air bag in a sleeving mode and covers the connecting position of the air bag opening and the gearbox. Through the arrangement, when the air pressure in the gearbox is increased, the elastic air bag is expanded; when the air pressure in the gearbox becomes small, the elastic air bag shrinks, so that the air pressure in the gearbox is balanced, the conditions of oil leakage and insufficient lubrication caused by the fact that the air pressure in the gearbox cannot be effectively released are prevented, a ventilation plug of the gearbox in the prior art is replaced, and the sealing and waterproof performance of the gearbox is enhanced; meanwhile, the metal sheath plays a role in protecting the elastic air bag, the waterproof performance of the gearbox is further improved, and the safety and reliability of the gearbox and a vehicle are improved.

Description

Technical Field

[0001] The present application relates to the technical field of gearboxes, and in particular to a gearbox waterproof device and a vehicle. Background Art

[0002] The gearbox is the core component of the automobile power transmission system and is the key to ensuring the speed and power of the automobile.

[0003] As the vehicle's operating conditions change, the internal pressure of the gearbox will also increase with the increase in the temperature of the internal lubricating oil. At this time, if the internal air pressure of the gearbox cannot be effectively released, oil may leak from the differential, resulting in insufficient lubrication under conditions where the gearbox lubricating oil temperature is low, affecting the efficiency of the gearbox system. Therefore, the breather pipe is particularly important.

[0004] However, when the vehicle is wading, if the water level is too deep or the tires are splashing water, there is a high risk that water will enter the gearbox through the vent pipe. Water entering the gearbox may cause problems such as oil emulsification and clutch polishing, which may cause the vehicle to lose power. Especially when the vehicle accidentally enters a deep water area, the loss of vehicle power may cause serious harm to the occupants. Utility Model Content

[0005] In view of this, the present application provides a gearbox waterproof device and a vehicle, which are used to improve the waterproof effect of the gearbox.

[0006] Specifically, the following technical solutions are included:

[0007] In a first aspect, an embodiment of the present application provides a gearbox waterproof device, comprising:

[0008] An elastic airbag having an airbag port for communicating with the gearbox;

[0009] The metal sheath is sleeved on the outer side of the elastic airbag and covers the connection between the airbag opening and the gearbox.

[0010] In an optional embodiment, the metal sheath is provided with at least one balancing through hole.

[0011] In an optional embodiment, the gearbox waterproof device further includes a buffer layer, the buffer layer is arranged on the inner side of the metal sheath, and the balancing through hole penetrates the metal sheath and the buffer layer.

[0012] In an optional embodiment, the inner diameter of the airbag opening gradually decreases in a direction from the distal end of the airbag opening to the proximal end of the airbag opening, and the distal end of the airbag opening is closer to the gearbox than the proximal end of the airbag opening.

[0013] In an optional embodiment, one of the elastic airbag and the metal sheath is provided with a protruding limiter, and the other is provided with a limit portion, and the limiter is inserted into the limit portion to achieve the connection between the metal sheath and the elastic airbag.

[0014] In an optional embodiment, the gearbox waterproof device also includes a first mounting member, the first mounting member has a accommodating cavity, the airbag opening, the limiting portion and the limiting member are all accommodated in the accommodating cavity, and the first end of the first mounting member is used to connect to the gearbox.

[0015] In an optional embodiment, a stopper is provided at the second end of the first mounting member, and the stopper extends radially from the outside to the inside of the first mounting member;

[0016] The limiting portion is convexly provided on the outer wall surface of the metal sheath, and the limiting portion is arranged in the accommodating cavity and can abut against the stopper.

[0017] In a second aspect, an embodiment of the present application provides a vehicle, comprising a gearbox and a gearbox waterproofing device provided by any embodiment of the first aspect, wherein the gearbox is provided with an airbag interface, and the airbag opening is sleeved on the airbag interface to connect the gearbox with the elastic airbag.

[0018] In an optional embodiment, the inner diameter of the airbag opening gradually decreases along the direction from the outer side of the elastic airbag to the inner side of the elastic airbag, and the shape of the airbag interface is adapted to the shape of the airbag opening.

[0019] In an optional embodiment, one of the elastic airbag and the metal sheath is provided with a stopper protruding therefrom, and the other is provided with a stopper portion, wherein the stopper portion is inserted into the stopper portion to achieve connection between the metal sheath and the elastic airbag;

[0020] The gearbox waterproof device further comprises a first mounting member, the first mounting member having a receiving cavity, the airbag opening, the limiting portion and the limiting member are all received in the receiving cavity;

[0021] The gearbox also includes a second mounting member, the airbag interface is mounted on the second mounting member, and the first end of the first mounting member is connected to the second mounting member.

[0022] The beneficial effects of the technical solution provided in the embodiment of the present application include at least: since the elastic airbag is connected to the gearbox through the airbag opening, during the operation of the vehicle, when the gas pressure in the gearbox increases, the elastic airbag expands; when the gas pressure in the gearbox decreases, the elastic airbag contracts, thereby balancing the gas pressure in the gearbox, preventing the gearbox from leaking oil and insufficient lubrication due to the ineffective release of internal air pressure, replacing the vent plug of the gearbox in the prior art, and enhancing the sealing and waterproof performance of the gearbox; at the same time, the metal sheath is arranged on the outside of the airbag and covers the connection between the airbag opening and the gearbox, which protects the elastic airbag and further improves the waterproof performance of the gearbox, which helps to improve the safety and reliability of the gearbox and the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 A schematic diagram of the structure of a transmission waterproof device provided in an embodiment of the present application;

[0025] Figure 2 This is an enlarged partial cross-sectional view of the transmission waterproof device provided in an embodiment of the present application.

[0026] The reference numerals in the figures represent respectively:

[0027] 1-elastic airbag; 11-airbag opening; 12-limiting member; 2-metal sheath; 21-balancing through hole; 22-buffer layer; 23-limiting part; 3-first mounting member; 31-stopping part; 32-accommodating cavity;

[0028] 100 - airbag interface; 200 - second mounting part.

[0029] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0031] The directional nouns involved in the embodiments of the present application, such as "upper", "lower", "side", etc., are generally represented by Figure 1 The relative relationship of the orientation shown in the figure is used as the basis, and these orientation terms are used only to more clearly describe the relationship between structures, not to describe absolute orientation. When the product is placed in different postures, the orientation may change, for example, "up" and "down" may be interchangeable.

[0032] Unless otherwise defined, all technical terms used in the embodiments of the present application have the same meanings as those generally understood by those of ordinary skill in the art. Some technical terms appearing in the embodiments of the present application are explained below.

[0033] In order to make the technical solutions and advantages of the present application more clear, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0034] like Figure 1 and Figure 2 As shown, an embodiment of the present application provides a gearbox waterproof device, which is applied to a gearbox of a vehicle. The gearbox waterproof device includes an elastic airbag 1 and a metal sheath 2.

[0035] The elastic airbag 1 has an airbag opening 11 for communicating with a gearbox, wherein the gearbox has an inner cavity, and the elastic airbag 1 is communicated with the inner cavity of the gearbox through the airbag opening 11 and plays a role in balancing the gas pressure of the gearbox.

[0036] Exemplarily, the gearbox is provided with a hollow airbag interface 100, and the airbag opening 11 of the elastic airbag 1 is sleeved outside the airbag interface 100 to achieve communication between the gearbox and the elastic airbag 1. Optionally, the airbag opening 11 and the airbag interface 100 are interference fit to improve the tightness of the connection between the two and ensure the sealing effect.

[0037] The elastic airbag 1 is in the shape of a balloon and is made of a material with elastic deformation ability such as rubber. During the operation of the vehicle, when the gas pressure in the gearbox increases, the elastic airbag 1 expands to release the gas in the gearbox, preventing oil from seeping from the differential connected to the gearbox, which causes insufficient lubrication under the condition of low gearbox lubricating oil temperature; when the gas pressure in the gearbox decreases, the elastic airbag 1 contracts to compensate for the gas pressure in the gearbox and balance the gas pressure in the gearbox.

[0038] The gearbox in the prior art often uses a vent plug to release the gas in the gearbox to prevent the gas pressure in the gearbox from being too high. When the vent plug is opened, if the water level in the external environment is too high, there is a possibility of water ingress, causing problems such as oil emulsification, clutch polishing, and even causing the vehicle to lose power.

[0039] The embodiment of the present application uses an elastic airbag 1 to balance the gas pressure in the gearbox, replacing the gearbox in the prior art. Since the elastic airbag 1 is relatively closed, it is difficult for liquid to enter the gearbox through the elastic airbag 1, which effectively improves the sealing and waterproof performance of the gearbox.

[0040] The metal sheath 2 is sleeved on the outer side of the elastic airbag 1 and covers the connection between the airbag opening 11 and the gearbox.

[0041] The metal sheath 2 is made of metal or alloy material, has good strength and corrosion resistance, and can protect the elastic airbag 1 to prevent the elastic airbag 1 from being damaged. At the same time, because the metal sheath 2 covers the connection between the airbag port 11 and the gearbox, the connection strength and sealing performance between the gearbox and the elastic airbag 1 are improved, so that the reliability and stability of the gearbox waterproof device are improved.

[0042] It is understandable that the metal sheath 2 has deformation capability. When the elastic airbag 1 is deformed, the metal sheath 2 can deform adaptively to avoid affecting the gas pressure balancing effect of the elastic airbag 1 .

[0043] Exemplarily, the metal sheath 2 is in a bag shape, wrapping the elastic airbag 1 in its inner cavity.

[0044] The shapes of the elastic airbag 1 and the metal sheath 2 can be set according to the installation space in the vehicle, for example Figure 1 As shown, the elastic airbag 1 and the metal sheath 2 are both slender in shape, and can fit into the relatively narrow and long installation space in the vehicle.

[0045] The gearbox waterproof device provided in the embodiment of the present application has an elastic airbag 1 connected to the gearbox through the airbag opening 11. Therefore, during the operation of the vehicle, when the gas pressure in the gearbox increases, the elastic airbag 1 expands; when the gas pressure in the gearbox decreases, the elastic airbag 1 contracts, thereby balancing the gas pressure in the gearbox, preventing the gearbox from leaking oil and insufficient lubrication due to the ineffective release of internal air pressure, replacing the vent plug of the gearbox in the prior art, and enhancing the sealing and waterproof performance of the gearbox; at the same time, the metal sheath 2 is sleeved on the outside of the airbag and covers the connection between the airbag opening 11 and the gearbox, thereby protecting the elastic airbag 1 and further improving the waterproof performance of the gearbox, which helps to improve the safety and reliability of the gearbox and the vehicle.

[0046] In a further embodiment, the metal sheath 2 is provided with at least one balancing through hole 21 .

[0047] The balancing through hole 21 passes through the side wall of the metal sheath 2 to connect the inner cavity of the metal sheath 2 with the atmosphere, thereby preventing the atmosphere and the inner cavity of the metal sheath 2 from generating a gas pressure difference that hinders the deformation of the elastic airbag 1, which is beneficial to ensuring the gas pressure balance of the elastic airbag 1.

[0048] The number of the balancing through holes 21 may be one or more, and may be set according to actual needs, for example Figure 1 As shown, there are seven balancing through holes 21 .

[0049] In a further embodiment, the gearbox waterproof device further includes a buffer layer 22 , which is disposed on the inner side of the metal sheath 2 , and the balancing through hole 21 penetrates the metal sheath 2 and the buffer layer 22 .

[0050] Exemplarily, the buffer layer 22 is made of a material with elastic deformation such as rubber. The buffer layer 22 covers the inner wall of the metal sheath 2 and plays a buffering and protective role for the elastic airbag 1 between the metal sheath 2 and the elastic airbag 1, preventing defects such as burrs in the metal sheath 2 or impacts from outside the metal sheath 2 from damaging the elastic airbag 1 and affecting the gas pressure balance effect of the elastic airbag 1.

[0051] In a further embodiment, the inner diameter of the airbag opening 11 gradually decreases along the direction from the distal end of the airbag opening 11 to the proximal end of the airbag opening 11, and the distal end of the airbag opening 11 is closer to the gearbox than the proximal end of the airbag opening 11, for example Figure 1 and Figure 2 As shown, the left end of the airbag opening 11 is the distal end, and the right end of the airbag opening 11 is the proximal end.

[0052] like Figure 2 As shown, the inner diameter of the airbag opening 11 gradually decreases from left to right, so that the airbag opening 11 is in a shape that gradually shrinks from left to right. As the airbag interface 100 goes deeper into the airbag opening 11, the fit between the airbag interface 100 and the airbag opening 11 gradually becomes tighter, which helps to improve the tightness of the connection between the two and ensure the sealing effect.

[0053] Optionally, the shape of the airbag interface 100 matches the shape of the airbag opening 11 , for example Figure 2 As shown, the outer diameter of the airbag interface 100 gradually decreases from left to right. Alternatively, the shape of the airbag interface 100 can also be different from the shape of the airbag opening 11, for example, the outer diameter of the airbag interface 100 is the same along its length direction, and the airbag interface 100 is cylindrical.

[0054] In a specific embodiment, one of the elastic airbag 1 and the metal sheath 2 is provided with a protruding limiter 12 , and the other is provided with a limit portion 23 , in which the limiter 12 is inserted, so as to achieve the connection between the metal sheath 2 and the elastic airbag 1 .

[0055] For example, Figure 2 As shown, a limit piece 12 is convexly provided on the outer wall surface of the elastic airbag 1, and the limit piece 12 is close to the position of the airbag opening 11. The metal sheath 2 is structured with a limit portion 23. By inserting the limit piece 12 into the limit portion 23, the connection and limitation between the elastic airbag 1 and the metal sheath 2 are achieved, thereby improving the connection reliability between the two.

[0056] The limiting portion 23 may be provided with structures such as a groove or a hole to facilitate the insertion of the limiting member 12 .

[0057] In a specific embodiment, the gearbox waterproof device also includes a first mounting member 3, the first mounting member 3 has a receiving cavity 32, the airbag opening 11, the limiting portion 23 and the limiting member 12 are accommodated in the receiving cavity 32, and the first end of the first mounting member 3 is used to connect to the gearbox.

[0058] In this embodiment, by providing the first mounting member 3, it is convenient to install the elastic airbag 1 and the metal sheath 2 as a whole to the airbag interface 100. At the same time, the metal sheath 2 and the airbag port 11 used for connecting with the airbag interface 100 are accommodated in the accommodating cavity 32, which can improve the connection sealing between the gearbox waterproof device and the gearbox and enhance the waterproof effect.

[0059] For example, the first mounting member 3 is cylindrical, and the first end of the first mounting member 3 is connected to the gearbox by threaded connection, key connection, fastener connection, etc., and the second end of the first mounting member 3 is used for the metal sheath 2 and the airbag port 11 to pass through. The first end and the second end of the first mounting member 3 are the two ends of the first mounting member 3 in the length direction, for example Figure 2 As shown, the left end of the first mounting member 3 is the first end, and the right end is the second end.

[0060] In a further embodiment, a stop portion 31 is provided at the second end of the first mounting member 3, and the stop portion 31 extends radially from the outside to the inside along the first mounting member 3. A limiting portion 23 is convexly provided on the outer wall surface of the metal sheath 2, and the limiting portion 23 is arranged in the accommodating cavity 32 and can abut against the stop portion 31.

[0061] like Figure 2 As shown, the stop portion 31 protrudes relative to the inner wall of the first mounting member 3, and the limiting portion 23 protrudes relative to the outer wall of the metal sheath 2. The limiting portion 23 can be limited by the stop portion 31 in the length direction of the first mounting member 3 to prevent the metal sheath 2 and the elastic airbag 1 from escaping from the accommodating cavity 32 of the first mounting member 3.

[0062] Optionally, the metal sheath 2 is fixedly connected to the stopper 31 ; or, the metal sheath 2 can move in the accommodating cavity 32 relative to the first mounting member 3 , and the moving direction is the length direction of the first mounting member 3 .

[0063] Exemplarily, the gearbox is provided with a second mounting member 200, the airbag interface 100 is connected to the second mounting member 200, the second mounting member 200 is provided with an external thread, and the first mounting member 3 is provided with an internal thread. In this embodiment, the assembly process of the gearbox waterproof device is as follows: insert the limiting member 12 of the elastic airbag 1 into the limiting portion 23 of the metal sheath 2 to connect the elastic airbag 1 and the metal sheath 2; insert the elastic airbag 1 and the metal sheath 2 as a whole from the first end to the second end of the first mounting member 3 into the accommodating cavity 32 until the limiting portion 23 abuts against the stopper 31; thread the first end of the first mounting member 3 and the second mounting member 200, and as the first mounting member 3 and the second mounting member 200 are gradually tightened, the airbag interface 100 is gradually inserted into the airbag port 11 until the assembly is completed.

[0064] An embodiment of the present application also provides a vehicle, including a gearbox and a gearbox waterproofing device provided by any of the above embodiments, the gearbox is provided with an airbag interface 100, and the airbag opening 11 is sleeved on the airbag interface 100 to connect the gearbox with the elastic airbag 1.

[0065] Optionally, the airbag opening 11 and the airbag interface 100 are interference fit to improve the tightness of the connection between the two and ensure the sealing effect.

[0066] In a further embodiment, the inner diameter of the airbag opening 11 gradually decreases along the direction from the outside of the elastic airbag 1 to the inside of the elastic airbag 1 , and the shape of the airbag interface 100 is adapted to the shape of the airbag opening 11 .

[0067] like Figure 2 As shown, the inner diameter of the airbag opening 11 gradually decreases from left to right, so that the airbag opening 11 is in a shape that gradually shrinks from left to right. As the airbag interface 100 goes deeper into the airbag opening 11, the fit between the airbag interface 100 and the airbag opening 11 gradually becomes tighter, which helps to improve the tightness of the connection between the two and ensure the sealing effect.

[0068] It can be understood that the shape of the airbag interface 100 is adapted to the shape of the airbag opening 11, which means that the outer diameter of the airbag interface 100 gradually decreases from the direction away from the airbag opening 11 to the direction close to the airbag opening 11, for example Figure 2 As shown, the outer diameter of the airbag interface 100 gradually decreases from left to right.

[0069] In a further embodiment, one of the elastic airbag 1 and the metal sheath 2 is provided with a protruding limit piece 12, and the other is configured with a limit portion 23, and the limit piece 12 is inserted into the limit portion 23 to achieve the connection between the metal sheath 2 and the elastic airbag 1; the gearbox waterproof device also includes a first mounting member 3, the first mounting member 3 has a accommodating cavity 32, and the airbag port 11, the limit portion 23 and the limit piece 12 are all accommodated in the accommodating cavity 32; the gearbox also includes a second mounting member 200, the airbag interface 100 is installed on the second mounting member 200, and the first end of the first mounting member 3 is connected to the second mounting member 200.

[0070] Exemplarily, the second mounting member 200 is provided with an external thread, the first mounting member 3 is provided with an internal thread, and the first mounting member 3 and the second mounting member 200 are threadedly connected.

[0071] In the present application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The term "plurality" refers to two or more than two, unless otherwise clearly defined.

[0072] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the present application disclosed herein. The present application is intended to cover any variations, uses or adaptations of the present application, which follow the general principles of the present application and include common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only.

[0073] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A gearbox waterproof device, characterized in that: The gearbox waterproof device comprises: An elastic airbag (1) having an airbag opening (11) for communicating with a gearbox; The metal sheath (2) is sleeved on the outside of the elastic airbag (1) and covers the connection between the airbag opening (11) and the gearbox.

2. The gearbox waterproof device according to claim 1, characterized in that: The metal sheath (2) is provided with at least one balancing through hole (21).

3. The gearbox waterproof device according to claim 2, characterized in that: The gearbox waterproof device further comprises a buffer layer (22), wherein the buffer layer (22) is arranged on the inner side of the metal sheath (2), and the balancing through hole (21) penetrates the metal sheath (2) and the buffer layer (22).

4. The gearbox waterproof device according to claim 1, characterized in that: The inner diameter of the airbag opening (11) gradually decreases along the direction from the distal end of the airbag opening (11) to the proximal end of the airbag opening (11), and the distal end of the airbag opening (11) is closer to the gearbox than the proximal end of the airbag opening (11).

5. The gearbox waterproof device according to claim 1, characterized in that: One of the elastic airbag (1) and the metal sheath (2) is provided with a protruding stopper (12), and the other is provided with a stopper portion (23), wherein the stopper (12) is inserted into the stopper portion (23) to achieve the connection between the metal sheath (2) and the elastic airbag (1).

6. The gearbox waterproof device according to claim 5, characterized in that: The gearbox waterproof device further comprises a first mounting member (3), the first mounting member (3) having a receiving cavity (32), the airbag opening (11), the limiting portion (23) and the limiting member (12) are all received in the receiving cavity (32), and the first end of the first mounting member (3) is used for connecting to the gearbox.

7. The gearbox waterproof device according to claim 6, characterized in that: A stopper (31) is provided at the second end of the first mounting member (3), and the stopper (31) extends radially from the outside to the inside of the first mounting member (3); The limiting portion (23) is convexly provided on the outer wall surface of the metal sheath (2); the limiting portion (23) is arranged in the accommodating cavity (32) and can abut against the stop portion (31).

8. A vehicle, characterized in that: It comprises a gearbox and a gearbox waterproof device according to any one of claims 1 to 7, wherein the gearbox is provided with an airbag interface (100), and the airbag opening (11) is sleeved on the airbag interface (100) so that the gearbox is connected to the elastic airbag (1).

9. The vehicle according to claim 8, characterized in that The inner diameter of the airbag opening (11) gradually decreases in a direction from the outside of the elastic airbag (1) to the inside of the elastic airbag (1), and the shape of the airbag interface (100) is adapted to the shape of the airbag opening (11).

10. The vehicle according to claim 8, characterized in that One of the elastic airbag (1) and the metal sheath (2) is provided with a stopper (12), and the other is provided with a stopper (23), wherein the stopper (12) is inserted into the stopper (23) to achieve connection between the metal sheath (2) and the elastic airbag (1); The gearbox waterproof device further comprises a first mounting member (3), the first mounting member (3) having a receiving cavity (32), the airbag opening (11), the limiting portion (23) and the limiting member (12) are all received in the receiving cavity (32); The gearbox further comprises a second mounting member (200), the airbag interface (100) is mounted on the second mounting member (200), and the first end of the first mounting member (3) is connected to the second mounting member (200).

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