Waterproof motor structure with air bag

Abstract

The utility model discloses a waterproof motor structure with an air bag. Comprising a motor shell and a vehicle frame tube, the motor shell is installed on the vehicle frame tube, a first through hole is formed in the motor shell so that the interior and the exterior of the motor shell can be communicated through fluid, and the lower end of the vehicle frame tube is open and provided with an inner cavity communicated with the opening fluid. An inner cavity of the motor housing is in fluid communication with an inner cavity of a vehicle frame tube via the first through hole. According to the utility model, the motor housing is provided with the first through hole used for gas circulation, and the first through hole is in butt joint with the air bag, thereby providing an extra gas circulation space for the motor housing, and reducing the pressure of the gas in the motor housing after being heated and expanded. Meanwhile, the first through hole is covered with the air bag, the waterproof effect can be achieved, the waterproof effect can be further improved through cooperation of the connecting piece and the mounting table top, the overall structure is simple, the motor position layout is more reasonable, and the wading height of the whole vehicle is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a waterproof motor structure with an airbag. Background Art

[0002] When the motor used on an electric vehicle (such as an off-road vehicle, ATV) works, heat is generated, and the gas inside the motor expands after being heated. Therefore, in the prior art, a ventilation hole (or heat dissipation hole) / vent valve is usually opened on the motor to solve the above technical problems, such as the disclosed patent document CN211859775U.

[0003] However, due to the existence of the ventilation hole / vent valve, the motor cannot be exposed to water for a long time, and water can enter the inside of the motor through the ventilation hole / vent valve, causing damage to the motor. Therefore, the applicant proposes this application. Summary of the Utility Model

[0004] The utility model aims at the deficiencies in the prior art and provides a waterproof motor structure with an airbag.

[0005] To solve the above technical problems, the utility model is solved by the following technical solutions:

[0006] A waterproof motor structure with an airbag, comprising a motor housing and a vehicle frame tube. The motor housing is installed on the vehicle frame tube. The outer wall of the motor housing includes a convex portion extending outward, and a first through hole is opened on the convex portion to fluidly communicate the inside and outside of the motor housing;

[0007] An airbag unit is assembled on the convex portion. The inner cavity of the airbag unit is fluidly communicated with the internal cavity of the motor housing through the first through hole;

[0008] The lower end of the vehicle frame tube is open and has an inner cavity fluidly communicated with the opening. At least part of the airbag unit is arranged in the inner cavity;

[0009] When the gas in the motor housing expands due to heat, the airbag unit expands accordingly to relieve the internal pressure of the motor housing.

[0010] In the above technical solution, preferably, a connecting piece is fixedly provided at the lower end of the vehicle frame tube. The outer periphery of the connecting piece includes a first extending wall extending downward. The outer wall of the motor housing includes a mounting table surface matched with the connecting piece, and the mounting table surface includes a groove or a through hole;

[0011] After the motor housing and the vehicle frame tube are assembled and connected, the lower end of the vehicle frame tube is arranged at the groove or through hole, and the first extending wall wraps at least part of the mounting table surface.

[0012] In the above technical solution, preferably, a plurality of second through holes are formed in the connecting member, and fasteners are inserted through the second through holes. A plurality of threaded holes that are in threaded cooperation with the fasteners are formed in the mounting table surface, so as to fix the motor housing to the vehicle frame tube through the fasteners.

[0013] In the above technical solution, preferably, a third through hole is formed in the middle of the connecting member. The vehicle frame tube passes through the third through hole and is fixedly connected to the connecting member, so that at least a part of its lower end extends below the connecting member.

[0014] In the above technical solution, preferably, the convex portion is arranged in the groove or the through hole.

[0015] In the above technical solution, preferably, the first through hole is longitudinally formed in the convex portion.

[0016] In the above technical solution, preferably, at least a part of the lower end of the vehicle frame tube extends below the main body wall of the connecting member, and at least a part of the upper end of the convex portion is located in the inner cavity of the vehicle frame tube.

[0017] In the above technical solution, preferably, the vehicle frame tube is a hollow pipe fitting.

[0018] In the above technical solution, preferably, the gas inlet and outlet end of the airbag unit is installed on the convex portion in an interference fit manner, and at least a part of its inflatable portion is arranged in the inner cavity of the vehicle frame tube.

[0019] In the above technical solution, preferably, the vehicle frame tube includes one or more bent portions, and its lower end portion is a straight tube.

[0020] The beneficial effects of the present utility model are as follows:

[0021] The present utility model forms a first through hole for gas circulation on the motor housing, and makes the first through hole dock with the airbag, providing an additional gas circulation space for the motor housing to relieve the pressure after the gas in the motor housing expands due to heat; at the same time, the first through hole is covered by the airbag inside, which can also play a role in waterproofing. The cooperation between the connecting member and the mounting table surface can further improve the waterproofing effect. The overall structure is simple, the layout of the motor is more reasonable, and the wading height of the whole vehicle is increased. Description of the Drawings

[0022] Figure 1 It is a schematic diagram of the present utility model.

[0023] Figure 2 It is a schematic diagram of the inner cavity of the motor housing of the present utility model.

[0024] Figure 3This is a schematic cross-sectional view of the present utility model.

[0025] Figure 4 It is Figure 3 an enlarged schematic view of the position E in

[0026] Figure 5 This is a schematic layout diagram of the position of the airbag of the present utility model on the motor housing.

[0027] Figure 6 This is a schematic view of the airbag of the present utility model.

[0028] Figure 7 This is a schematic view of the vehicle frame of the present utility model.

[0029] Figure 8 This is a schematic view of the connecting member of the present utility model.

[0030] Figure 9 This is a schematic view of the connecting member of the present utility model from another perspective.

[0031] Figure 10 This is a schematic view of the cooperation state of the connecting member of the present utility model with the installation table surface. Detailed implementation manners

[0032] The present utility model will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners:

[0033] Refer to Figures 1 - 10 , a waterproof motor structure with an airbag, including a vehicle frame tube 1 and a motor housing 2.

[0034] For the vehicle frame tube 1, it is a part of the vehicle frame. For example, the main frame tube on the vehicle frame is selected as the part for installing the motor.

[0035] In this embodiment, the lower end of the vehicle frame tube 1 is open and has an inner cavity 11 that is in fluid communication with the opening. As one option, the vehicle frame tube 1 is a hollow pipe fitting. When a hollow vehicle frame tube is selected, the volume of the inner cavity 11 becomes larger accordingly. The inner cavity 11 is mainly provided to provide the required space for the expansion of the airbag unit 3. For specific details, see the following description.

[0036] The motor housing 2 is installed on the vehicle frame tube 1. As one option, the motor housing 2 is installed at the lower end of the vehicle frame tube 1. The part connected to the vehicle frame tube 1 is the outer peripheral wall 21 of the motor housing 2. The outer peripheral wall 21 refers to the outer side wall between the left and right side walls of the motor housing. For example, Figure 1 as shown in the cylindrical motor, its outer peripheral wall is an annular outer side wall.

[0037] In this embodiment, a connecting member 4 is fixedly provided at the lower end of the vehicle frame tube 1. Correspondingly, an installation table surface 22 that cooperates with the connecting member 4 is included on the outer wall of the motor housing 2. The connecting member 4 is connected to the installation table surface 22 through a fastener 23, thereby fixing the motor housing 2 to the vehicle frame tube 1.

[0038] Specifically, a number of second through holes 41 are formed in the connecting member 4. The fastener 23 passes through the second through holes 41. A number of threaded holes 24 that are threadedly matched with the fastener 23 are formed on the installation table surface 22, and the threaded holes 24 correspond to the second through holes 41 one by one. During installation, the connecting member 4 and the installation table surface 22 are adaptively butted, and then the fastener 23 is tightened.

[0039] Regarding the matching manner between the vehicle frame tube 1 and the connecting member 4, in this embodiment, a third through hole 42 is formed in the middle of the connecting member 4. The vehicle frame tube 1 passes through the third through hole 42 and is fixedly connected to the connecting member 4. After being fixed, at least a part of the lower end of the vehicle frame tube 1 extends below the main body wall 43 of the connecting member 4. The main body wall 43 of the connecting member 4 is the wall that cooperates with the installation table surface 22, such as Figure 4 shown.

[0040] Furthermore, the installation table surface 22 includes a groove 25. The extended part of the vehicle frame tube 1 can be inserted into the groove 25 (when the vehicle frame tube 1 and the motor housing 2 are assembled). As an option, the shape and size of the extended part of the vehicle frame tube 1 are adapted to the shape and size of the groove 25. On the one hand, it can improve the fitting tightness between the motor and the vehicle frame, and on the other hand, it helps to improve the waterproof effect.

[0041] To further improve the waterproof property, in this embodiment, the outer periphery of the connecting member 4 includes a first extension wall 44 that extends downward. As an option, as Figure 4 shown, the first extension wall 44 is formed by bending downward from the outer edge of the main body wall 43 of the connecting member. When the connecting member 4 and the installation table surface 22 are assembled, the first extension wall 44 of the connecting member 4 wraps the upper part of the installation table surface 22. Since the connecting member 4 is fixedly provided on the vehicle frame tube 1, such as by welding, there is no gap between the connecting member 4 and the vehicle frame tube 1. The gap only exists between the connecting member 4 and the installation table surface 22. After the first extension wall 44 is provided, it can divert external water so that it cannot enter from the gap between the two, thereby improving the waterproof property.

[0042] As pointed out above, the mounting table 22 includes a groove 25. Of course, the groove 25 can also be a through hole opened on the mounting table 22. In this embodiment, a protrusion 6 is provided on the bottom surface of the groove 25 (the outer wall of the motor housing). The protrusion 6 specifically extends to the outside of the motor housing 2. It can be fixed on the outer wall of the motor housing 2 by welding or other fixing methods or integrally formed on the outer wall of the motor housing 2 (or understood as a part of the motor housing).

[0043] Furthermore, a first through hole 61 is provided on the raised portion 6. As one of the options, the first through hole 61 is provided longitudinally and passes through the motor housing 2. The inner end is connected to the internal cavity fluid of the motor housing 2, and the outer end is connected to the external air fluid. It is used as a vent hole, and the fluid connects the inside and outside of the motor housing 2.

[0044] As a preferred design, when the vehicle frame tube 1 is connected to the motor housing 2 , at least a portion of the upper end of the protrusion 6 enters into the inner cavity 11 of the vehicle frame tube 1 .

[0045] like Figures 3 - 6 As shown, an airbag unit 3 is assembled at the raised portion 6, and the airbag unit 3 has a gas inlet and outlet 31, and the gas inlet and outlet 31 corresponds to the first through hole 61, so that the inner cavity of the airbag unit 3 is in fluid communication with the inner cavity of the motor housing 2 through the first through hole 61. When the gas in the motor housing 2 expands due to heat, the heated gas can enter the airbag unit 3, causing the airbag unit 3 to expand accordingly. The space required for its expansion is provided by the inner cavity 11 of the vehicle frame tube 1, so as to reduce the internal pressure of the motor housing 2, and can effectively play an internal waterproof role while relieving the pressure; when the motor shrinks due to cold gas, the airbag unit 3 shrinks accordingly.

[0046] like Figure 4 As shown, when the motor housing 2 is installed on the vehicle frame tube 1, the deformable portion of the airbag unit 3 is located in the internal cavity 11 of the vehicle frame tube 1. After the airbag unit 3 is designed, the size of the internal cavity of the vehicle frame tube 1 only needs to be sufficient to accommodate the maximum deformation size of the airbag unit 3. Of course, the vehicle frame tube 1 can also be directly designed as a hollow tube.

[0047] As one of the options, the gas inlet and outlet ends 31 of the airbag unit 3 are installed on the raised portion 6 with an interference fit. To facilitate the deformation of the airbag unit 3, in this embodiment, the lower end of the vehicle frame tube 1 is bent into a straight tube so that the airbag unit 3 can be deformed straight up and down, thereby avoiding friction damage between the outer wall of the airbag unit 3 and the inner wall of the vehicle frame tube 1 as much as possible, which helps to extend the service life of the airbag unit 3.

[0048] Meanwhile, after the vehicle frame tube 1 has a bent portion, the size of the vehicle in the front-rear direction can also be reduced, making the structural design more compact, the layout of the motor position and the weight distribution more reasonable, and improving the vehicle controllability.

[0049] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A waterproof motor structure with an airbag, characterized in that: The motor housing comprises a motor housing and a vehicle frame tube, wherein the motor housing is mounted on the vehicle frame tube, the outer wall of the motor housing comprises a protrusion extending outward thereof, and the protrusion is provided with a first through hole to fluidically connect the inside and outside of the motor housing; The protrusion is equipped with an airbag unit, and the inner cavity of the airbag unit is in fluid communication with the inner cavity of the motor housing through the first through hole; The lower end of the vehicle frame tube is open and has an inner cavity in fluid communication with the opening, and at least a part of the airbag unit is arranged in the inner cavity; When the gas in the motor housing expands due to heat, the airbag unit expands accordingly to reduce the internal pressure of the motor housing.

2. The waterproof motor structure with airbag according to claim 1, characterized in that: A connecting piece is fixedly provided at the lower end of the vehicle frame tube, the outer periphery of the connecting piece includes a first extension wall extending downward therefrom, the outer wall of the motor housing includes a mounting table surface matched with the connecting piece, and the mounting table surface includes a groove or a through hole; When the motor housing is assembled and connected to the vehicle frame tube, the lower end of the vehicle frame tube is arranged at the groove or the through hole, and the first extension wall wraps at least a part of the installation table.

3. The waterproof motor structure with airbag according to claim 2, characterized in that: The connecting member is provided with a plurality of second through holes, through which fasteners are passed, and the mounting table is provided with a plurality of threaded holes that are threadably matched with the fasteners, so that the motor housing can be fixed to the vehicle frame tube through the fasteners.

4. The waterproof motor structure with airbag according to claim 2 or 3, characterized in that: A third through hole is formed in the middle of the connecting member, and the vehicle frame tube passes through the third through hole and is fixedly connected to the connecting member, so that at least part of its lower end extends below the connecting member.

5. The waterproof motor structure with airbag according to claim 2, characterized in that: The protrusion is arranged in the groove or the through hole.

6. The waterproof motor structure with airbag according to claim 5, characterized in that: The first through hole is longitudinally opened on the protruding portion.

7. The waterproof motor structure with airbag according to claim 6, characterized in that: At least a portion of the lower end of the vehicle frame tube extends below the main body wall of the connecting piece, and at least a portion of the upper end of the protrusion is located in the inner cavity of the vehicle frame tube.

8. The waterproof motor structure with airbag according to claim 1, characterized in that: The vehicle frame tube is a hollow tube.

9. The waterproof motor structure with airbag according to claim 1 or 8, characterized in that: The gas inlet and outlet ends of the airbag unit are installed on the protruding portion by interference fit, and at least part of the expandable portion is arranged in the inner cavity of the vehicle frame tube.

10. The waterproof motor structure with airbag according to claim 1 or 8, characterized in that: The vehicle frame tube includes one or more bent parts, and the lower end part thereof is a straight tube.

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