Waterproof motor structure

Abstract

The utility model discloses a waterproof motor structure. 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 internal cavity of the vehicle frame tube, 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 by the vehicle frame tube, 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. Background Art

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

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

[0004] The utility model provides a waterproof motor structure for the deficiencies in the prior art.

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

[0006] A waterproof motor structure, including a motor housing and a vehicle frame tube. The motor housing is installed on the vehicle frame tube. A first through hole is opened on the motor housing to fluidly connect the inside and outside of the motor housing. The lower end of the vehicle frame tube is open and has an inner cavity fluidly connected to the opening. When the motor housing is assembled and connected to the vehicle frame tube, the inner cavity of the motor housing is fluidly connected to the inner cavity of the vehicle frame tube through the first through hole.

[0007] In the above technical solution, preferably, a connecting member is fixedly provided at the lower end of the vehicle frame tube. A plurality of second through holes are opened on the connecting member, and fasteners are passed through the second through holes;

[0008] The outer wall of the motor housing includes an installation table surface that cooperates with the connecting member. A plurality of threaded holes that are threadedly matched with the fasteners are opened on the installation table surface to fix the motor housing on the vehicle frame tube through the fasteners.

[0009] In the above technical solution, preferably, the outer periphery of the connecting member includes a first extension wall extending downward therefrom. The first through hole is opened at the installation table surface. When the connecting member is cooperatively connected with the installation table surface, the first extension wall wraps the upper part of the installation table surface to prevent external water from entering the motor housing through the first through hole.

[0010] In the above technical solution, preferably, 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 a part of its lower end extends below the connecting member.

[0011] In the above technical solution, preferably, the mounting table surface includes a groove or a through hole, and the first through hole is arranged in the groove or the through hole.

[0012] 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, so that when the vehicle frame tube is connected to the motor housing, at least a part of the lower end of the vehicle frame tube is inserted into the groove or the through hole.

[0013] In the above technical solution, preferably, a protruding portion extending outward is included on the outer wall of the motor housing, and the first through hole is formed at the protruding portion. When the vehicle frame tube is cooperatively connected to the motor housing, at least a part of the upper end of the protruding portion enters the inner cavity of the vehicle frame tube.

[0014] In the above technical solution, preferably, the vehicle frame tube is a hollow pipe fitting.

[0015] In the above technical solution, preferably, the vehicle frame tube includes one or more bent portions.

[0016] In the above technical solution, preferably, the lower end of the vehicle frame is a straight pipe.

[0017] The beneficial effects of the present utility model are as follows:

[0018] 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 internal cavity of the vehicle frame tube, 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 vehicle frame tube, which can also play a waterproof role, and the cooperation between the connecting member and the mounting table surface can further improve the waterproof effect. The overall structure is simple, the layout of the motor position is more reasonable, and the wading height of the whole vehicle is increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the present utility model.

[0020] Figure 2 It is a cross-sectional schematic diagram of the present utility model.

[0021] Figure 3 It is Figure 2 The enlarged schematic diagram at D in

[0022] Figure 4Schematic diagram of the motor housing of the present utility model.

[0023] Figure 5 Schematic diagram of the internal cavity of the motor housing of the present utility model.

[0024] Figure 6 Schematic diagram of the vehicle frame of the present utility model.

[0025] Figure 7 Schematic diagram of the connecting piece of the present utility model.

[0026] Figure 8 Schematic diagram of another perspective of the connecting piece of the present utility model.

[0027] Figure 9 Schematic diagram of the mating state of the connecting piece of the present utility model with the mounting table surface. Detailed implementation manners

[0028] The present utility model will be further described in detail below in conjunction with the accompanying drawings and the detailed implementation manners:

[0029] Refer to Figures 1-9 , the waterproof motor structure includes a vehicle frame tube 1 and a motor housing 2.

[0030] 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.

[0031] 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 setting of the inner cavity 11 is mainly used to provide an additional gas flow space for the motor housing 2. For specific details, please refer to the following description.

[0032] 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 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 wall.

[0033] In this embodiment, a connecting piece 4 is fixedly provided at the lower end of the vehicle frame tube 1. Correspondingly, on the outer wall of the motor housing 2, there is an installation table surface 22 that cooperates with the connecting piece 4. The connecting piece 4 and the installation table surface 22 are connected by a fastener 23, thereby fixing the motor housing 2 on the vehicle frame tube 1.

[0034] Specifically, a plurality of second through holes 41 are formed in the connecting member 4, and the fastening member 23 is inserted through the second through holes 41. A plurality of threaded holes 24 that are threadedly engaged with the fastening member 23 are formed in the mounting table surface 22, and the threaded holes 24 correspond to the second through holes 41 one by one. During installation, the connecting member 4 is adaptively docked with the mounting table surface 22, and then the fastening member 23 is tightened.

[0035] Regarding the fitting manner of 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. After the vehicle frame tube 1 passes through the third through hole 42, it 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 mounting table surface 22, as Figure 3 shown.

[0036] Furthermore, the mounting table surface 22 includes a groove 25. The part extended from 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 part extended from 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.

[0037] To further improve the waterproof property, in this embodiment, the outer periphery of the connecting member 4 includes a first extension wall 44 extending downward therefrom. As an option, as Figure 3 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 mounting table surface 22 are assembled, the first extension wall 44 of the connecting member 4 wraps the upper part of the mounting table surface 22. Since the connecting member 4 is fixedly arranged 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, and the gap only exists between the connecting member 4 and the mounting table surface 22. After the first extension wall 44 is provided, it can divert the external water so that it cannot enter from the gap between the two, thereby improving the waterproof property.

[0038] As pointed out above, the mounting table surface 22 includes a groove 25. Of course, the groove 25 can also be a through hole formed in the mounting table surface 22. In this embodiment, a protrusion 6 is provided on the bottom surface (outer wall of the motor housing) of the groove 25. The protrusion 6 specifically extends outward from the motor housing 2, and it can be fixedly arranged on the outer wall of the motor housing 2 by means of welding or the like or integrally formed on the outer wall of the motor housing 2 (or understood as a part of the motor housing).

[0039] Further, a first through hole 61 is provided in the convex portion 6. As an option, the first through hole 61 is longitudinally provided, penetrating the motor housing 2, with its inner end fluidly connected to the internal cavity of the motor housing 2 and its outer end fluidly connected to the external air, serving as a ventilation hole to fluidly connect the inside and outside of the motor housing 2.

[0040] After the motor housing 2 is installed on the vehicle frame tube 1, the gas inside the motor housing 2 can enter the inner cavity 11 of the vehicle frame tube 1 through the first through hole 61. Thus, when the motor generates heat during operation and the gas inside the motor expands due to heat, the gas can enter the vehicle frame tube 1. The above design is equivalent to expanding the internal space of the motor, reducing the internal pressure of the motor after the gas expands due to heat, and effectively playing a role in internal waterproofing while relieving pressure.

[0041] As a preferred design, when the vehicle frame tube 1 is cooperatively connected to the motor housing 2, at least a part of the upper end of the convex portion 6 enters the inner cavity 11 of the vehicle frame tube 1.

[0042] After the vehicle frame tube 1 has a bent portion, it can also reduce the size of the vehicle in the front-rear direction, making the structural design more compact, the motor position layout and weight layout more reasonable, and improving the vehicle controllability.

[0043] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; 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 recorded 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 present invention in each embodiment.

Claims

1. Waterproof motor structure, characterized by: The invention comprises a motor housing and a vehicle frame tube, wherein the motor housing is mounted on the vehicle frame tube, a first through hole is formed on the motor housing to fluidically connect the inside and outside of the motor housing, the lower end of the vehicle frame tube is open and has an inner cavity fluidically connected to the opening, and when the motor housing is assembled and connected to the vehicle frame tube, the internal cavity of the motor housing is fluidically connected to the inner cavity of the vehicle frame tube via the first through hole.

2. The waterproof motor structure according to claim 1, characterized in that: A connecting piece is fixedly provided at the lower end of the vehicle frame tube, a plurality of second through holes are opened on the connecting piece, and fasteners are passed through the second through holes; The outer wall of the motor housing includes a mounting table surface matched with the connecting piece, and the mounting table surface is provided with a plurality of threaded holes matched with the threads of the fasteners, so that the motor housing can be fixed to the vehicle frame tube through the fasteners.

3. The waterproof motor structure according to claim 2, characterized in that: The outer periphery of the connecting member includes a first extension wall extending downwardly thereof, and the first through hole is opened at the mounting table. When the connecting member is connected with the mounting table, the first extension wall wraps the upper part of the mounting table to prevent external water from entering the motor housing through the first through hole.

4. The waterproof motor structure according to claim 2, 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 according to claim 2, characterized in that: The mounting table top includes a groove or a through hole, and the first through hole is arranged in the groove or the through hole.

6. The waterproof motor structure according to claim 5, characterized in that: At least a portion of the lower end of the vehicle frame tube extends below the main body wall of the connector, so that when the vehicle frame tube is connected to the motor housing, at least a portion of the lower end of the vehicle frame tube is inserted into the groove or through hole.

7. The waterproof motor structure according to any one of claims 1 to 6, characterized in that: The outer wall of the motor housing includes a protrusion extending outward thereof, and the first through hole is opened at the protrusion. When the vehicle frame tube is connected with the motor housing, at least part of the upper end of the protrusion enters the inner cavity of the vehicle frame tube.

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

9. The waterproof motor structure according to claim 7, characterized in that: The vehicle frame tube includes one or more bends.

10. The waterproof motor structure according to claim 9, characterized in that: The lower end of the vehicle frame is a straight pipe.

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