Motor protection structure and vehicle

Abstract

The utility model provides a motor protection structure and a vehicle, the motor protection structure is used for protecting a motor in an electric drive axle, the motor protection structure comprises a protection piece and a connecting piece, the protection piece is located below the motor and covers the motor in the vertical direction, and the protection piece comprises a first protection plate and a second protection plate which are arranged in a stacked mode; the connecting piece comprises at least two connecting parts connected to the edge of the protective piece, the connecting parts are bent towards the motor relative to the protective piece, and all the connecting parts are connected to the electric drive axle. According to the motor protection structure, the protection position is more accurate, and the area of the protection part is reduced, so that consumables are reduced, the weight is reduced, the cost is saved, the occupation of the vehicle bottom space is reduced, the space of the vehicle in the vertical direction is saved, and the trafficability of the vehicle is improved. The motor protection structure is simple, the motor is prevented from being damaged when the bottom of the vehicle is subjected to large impact, and therefore the reliability of the motor is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to vehicle technical field especially, it relates to a motor protection structure and vehicle. BACKGROUND

[0002] With new energy electric axle being applied in more and more vehicle models, electric four-wheel drive off-road is also accepted by people. One of the influences is that the electric drive axle is placed at the rear wheel of the vehicle, compared with the electric drive axle being set at the front wheel, the ground clearance is reduced, the risk of knocking of the motor in the electric drive axle is increased, and then the service life of the motor is affected.

[0003] In order to meet the protection requirements of new energy vehicle motor, the current vehicle installs a guard plate at the bottom of the electric drive axle, the guard plate is installed on the vehicle body, not only the space of the vehicle is wasted, but also the gap between the bottom of the vehicle and the ground is greatly reduced, the passability of the vehicle is reduced, and the structural strength of the guard plate is also low, which cannot bear the greater impact force. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a motor protection structure and vehicle, and aims at solving the technical problems that the current vehicle guard plate reduces the passability of the vehicle and has low structural strength.

[0005] The utility model is realized in this way, a motor protection structure is provided in the first aspect, which is used for protecting the motor in the electric drive axle, and the motor protection structure comprises:

[0006] A protection piece is located below the motor and covers the motor in the up-down direction, and the protection piece comprises a first protection plate and a second protection plate arranged in layers.

[0007] A connecting piece comprises at least two connecting parts connected to the edges of the protection piece, the connecting parts are bent towards the motor relative to the protection piece, and each connecting part is connected to the electric drive axle.

[0008] As one of the possible implementation manners of the first aspect, the plurality of connecting parts are connected to the first protection plate.

[0009] As one of the possible implementation manners of the first aspect, the plurality of connecting parts are integrally formed with the first protection plate.

[0010] As one of the possible implementation manners of the first aspect, the second protection plate is installed on the side of the first protection plate close to the motor.

[0011] As one of the possible implementation manners of the first aspect, the second protection plate has elasticity and can provide buffering for the vibration of the first protection plate.

[0012] In a possible implementation of the first aspect, the second protective plate has an impact resistance greater than a preset value.

[0013] In a possible implementation of the first aspect, the protective member has at least one step structure formed by stamping.

[0014] In a possible implementation of the first aspect, the first protective plate has a plurality of first water leakage holes, and the second protective plate avoids the first water leakage holes.

[0015] In a possible implementation of the first aspect, the second protective plate has a plurality of second water leakage holes, and the second water leakage holes are connected to the first water leakage holes in the thickness direction of the second protective plate.

[0016] In a second aspect, a vehicle is provided, which includes a vehicle body, an electric drive axle, and the motor protection structure according to any one of the above embodiments.

[0017] The motor protection structure of the utility model discloses relative to prior art's technical effect is: this motor protection structure is connected to electric drive axle, not the vehicle body, and the protection position is more accurate, reduces the area of protective member, thereby reduces the consumables, reduces the weight, saves the cost, reduces the occupation to the space of the vehicle bottom, and also can shorten the distance between the protective member and the motor when connecting to the electric drive axle, saves the space in the up-down direction of the vehicle, makes the protective member and the motor connection more closely, like this, also has lifted the horizontal height of protective member, thereby makes the distance between the bottom of the vehicle and the ground enlarge, thereby improves the passability of the vehicle. The motor protection structure improves the structural strength of the protective member through the first protective plate and the second protective plate arranged in layers, is simple in structure, avoids damaging the motor when the bottom of the vehicle is subjected to a greater impact, thereby improving the reliability of the motor. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme of the utility model embodiment, the following will be briefly introduced to the utility model embodiment or the drawings needed to be used in the prior art description, and obviously, the following described drawings are only some embodiments of the utility model, and for those skilled in the art, under the premise of not paying the creative labor, other drawings can also be obtained according to these drawings.

[0019] Figure 1 It is the three-dimensional structure diagram of the motor protection structure provided by the utility model embodiment;

[0020] Figure 2 It is Figure 1The exploded view of the motor protection structure in the motor protection structure.

[0021] Explanation of reference numerals:

[0022] 10, protection piece; 11, first protection plate; 110, first water leakage hole; 12, second protection plate; 120, second water leakage hole; 13, step structure; 20, connecting piece; 21, connecting part; 211, wrinkle; 210, connecting hole. DETAILED DESCRIPTION

[0023] The embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0024] In the description of the present application, it is to be understood that the terms "length", "width", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0025] In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0026] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0027] In order to make the purpose, technical scheme and advantages of the present application more clear and explicit, the present application will be further described in detail below with reference to the drawings and examples.

[0028] With new energy electric axle applied in more and more vehicle models, electric four-wheel drive off-road is also accepted by people. One of the effects is that the electric drive axle is placed at the rear wheel of the vehicle, compared with the electric drive axle arranged at the front wheel, the ground clearance is reduced, the risk of knocking the motor in the electric drive axle is increased, and the service life of the motor is affected.

[0029] The utility model embodiment provides a kind of vehicle, vehicle includes vehicle body and electric drive axle, electric drive axle includes motor and multiple transmission mechanism, multiple transmission mechanism includes the reducer and differential gear connected in sequence, reducer is transmission connection with the output shaft of motor, electric drive axle is connected to the bottom surface of the vehicle body, differential gear is connected to rear wheel by half shaft, and half shaft is used to transmit power to the electric drive axle to wheel.

[0030] To meet the protection requirements of new energy vehicle motor, the current vehicle installs the guard plate at the bottom of electric drive axle, the guard plate is installed on the vehicle body, the protection area is too large, not only waste the whole vehicle space, but also greatly reduce the gap between the bottom of vehicle and ground, reduce the passability of vehicle, the structural strength of guard plate is also lower, cannot withstand greater impact force.

[0031] The utility model embodiment further provides a kind of motor protection structure, motor protection structure is connected to electric drive axle and at least covers the bottom of motor, for protecting motor.The above-mentioned cover in motor bottom refers to that motor protection structure is located below motor, and covers motor in up-down direction.

[0032] Please refer to Figure 1 And Figure 2 The motor protection structure includes protection piece 10 and connecting piece 20, protection piece 10 is arranged below motor, and is used to protect motor, connecting piece 20 is connected to protection piece 10 and is used to be connected with electric drive axle.

[0033] Specifically, the area of protection piece 10 is greater than the cross-sectional area of motor, and the protection piece 10 can cover the motor in the up-down direction to prevent the bottom of the vehicle from being directly knocked to the motor when being knocked.

[0034] In order to improve the structural strength of protection piece 10, protection piece 10 includes first protection plate 11 and second protection plate 12 arranged in layers, the setting of two layers of protection plates can improve the hardness and structural strength of protection piece 10, so that protection piece 10 can withstand certain external impact. At least one of the first protection plate 11 and the second protection plate 12 can be made of high-strength material, such as stainless steel, aluminum alloy, etc. metal, of course, it can also be engineering plastics (such as ABS, PC, etc.) or composite material (such as carbon fiber reinforced plastic, etc.), which is not limited here. The material of the first protection plate 11 and the second protection plate 12 can be the same or different, and can be selected and set according to the design requirements.

[0035] The protector 10 is kept at a certain distance from the motor to avoid the impact force being directly transmitted to the motor when the protector 10 is impacted.

[0036] The connecting member 20 comprises at least two connecting portions 21 connected to the edge of the protector 10, the connecting portions 21 are bent towards the motor relative to the protector 10, and each connecting portion 21 is connected to the electric drive axle. The connecting portions 21 can realize the connection between the protector 10 and the electric drive axle, the bending of the connecting portions 21 relative to the protector 10 can realize the distance between the protector 10 and the motor, and at the same time, the transmission chain when the protector 10 is impacted is prolonged, thereby reducing the impact force transmitted to the motor. The at least two connecting portions 21 can realize the stable connection between the protector 10 and the electric drive axle. The at least two connecting portions 21 can be respectively arranged on opposite sides of the protector 10. The connecting portions 21 can be made of high-strength materials, such as stainless steel, aluminum alloy, and the like, and can also be engineering plastics (such as ABS, PC, etc.) or composite materials (such as carbon fiber reinforced plastics, etc.), which are not limited herein. It should be noted that the materials of the multiple connecting portions 21 can be the same or different, as long as they can realize the connection and meet the strength requirements.

[0037] In other embodiments, the connecting portions 21 can also be connected to the middle part of the protector 10, as long as they can realize the connection with the electric drive axle, which is not limited herein.

[0038] The motor protection structure connects the connecting portions 21 to the electric drive axle instead of the vehicle body, so that the protection position is more accurate, the area of the protector 10 is reduced, the material consumption is reduced, the weight is reduced, the cost is saved, the occupation of the space under the vehicle is reduced, and at the same time, the connection with the electric drive axle can also shorten the distance between the protector 10 and the motor, save the space in the up-down direction of the vehicle, make the connection between the protector 10 and the motor more close, and thus, the horizontal height of the protector 10 is raised, so that the distance between the bottom of the vehicle and the ground is enlarged, thereby improving the passability of the vehicle. The motor protection structure improves the structural strength of the protector 10 through the stacked first and second protection plates 11 and 12, has a simple structure, avoids damaging the motor when the bottom of the vehicle is impacted, and thus improves the reliability of the motor.

[0039] Please refer to Figure 2 Optionally, the multiple connecting portions 21 are all connected to the first protection plate 11 for easy processing. In other embodiments, the multiple connecting portions 21 can be partially connected to the first protection plate 11 and partially connected to the second protection plate 12, which is not limited herein.

[0040] Please refer to Figure 2Optionally, the plurality of connecting portions 21 are integrally formed with the first protective plate 11, so as to facilitate processing and improve the structural strength of the motor protection structure, and prevent the connecting portions 21 and the first protective plate 11 from being broken.

[0041] Further, the first protective plate 11 and the plurality of connecting portions 21 can be processed from one stainless steel plate. The edge portion of the metal plate is bent to form the connecting portions 21, and the unbent portion of the metal plate forms the first protective plate 11. This processing method can improve the processing efficiency.

[0042] Referring to Figure 2 In the illustrated embodiment, the connecting member 20 includes four connecting portions 21, which are sequentially arranged along the edge of the protection member 10. Two of the connecting portions 21 can be connected to the end cover of the motor, and the other two can be connected to the housing of the speed reducer. In this way, the protection member 10 can be arranged on the bottom of the motor in the up-down direction.

[0043] Referring to Figure 2 Optionally, the connecting portions 21 are each provided with a connecting hole 210. The connecting portions 21 can be connected to the end cover of the motor or the housing of the speed reducer by fasteners penetrating the connecting holes 210. The fasteners can be screws. The connecting portions 21 can be formed in a triangular plate shape. The connecting holes 210 are arranged near the top of the triangular plate-shaped connecting portions 21, so as to save materials and avoid the connecting portions 21 from having too large a contact area with the end cover of the motor or the housing of the speed reducer, which can generate noise during vehicle operation.

[0044] To improve the structural strength of the connecting portions 21, at least one wrinkle 211 can be arranged on the connecting portions 21. The wrinkle 211 can be formed by bending.

[0045] Referring to Figure 1 and Figure 2 In some embodiments, the second protective plate 12 is arranged on the side of the first protective plate 11 close to the motor, so as to prevent the second protective plate 12 from being scratched and falling off.

[0046] In some embodiments, the second protective plate 12 is elastic and can provide buffering for the vibration of the first protective plate 11. The second protective plate 12 absorbs the vibration energy of the first protective plate 11 through its own elasticity, so as to reduce the noise generated by the protection member 10, improve the NVH (Noise, Vibration and Harshness) of the vehicle, and reduce the vibration force transmitted from the first protective plate 11 to the motor.

[0047] Optionally, the impact resistance of the second protective plate 12 is greater than a preset value. In this way, the arrangement of the second protective plate 12 can improve the overall structural strength of the protection member 10.

[0048] Optionally, the second protective plate 12 can be a butyl rubber plate, which can buffer the first protective plate 11 while having an impact strength greater than a preset value to improve the overall structural strength of the protective member 10.

[0049] Optionally, the size and shape of the second protective plate 12 are similar to those of the first protective plate 11 to increase the area of the high-strength region of the protective member 10. The second protective plate 12 can be arranged in close contact with the first protective plate 11, for example, integrally bonded or welded to the first protective plate 11, to avoid mutual collision between the first protective plate 11 and the second protective plate 12 and generate noise.

[0050] Referring to Figure 1 and Figure 2 In some embodiments, the protective member 10 is formed by stamping to have a stepped structure 13, which can form a reinforcing rib on the protective member 10 to improve the structural strength of the protective member 10 and thus improve the impact resistance of the protective member 10.

[0051] Optionally, the first protective plate 11 and the second protective plate 12 are both formed with the stepped structure 13, and the stepped structure 13 on the first protective plate 11 is superimposed with the stepped structure 13 on the second protective plate 12. That is, the first protective plate 11 and the second protective plate 12 can be connected into one body and then the stepped structure 13 is formed by stamping or the like, which is convenient for processing and can further improve the structural strength of the protective member 10. The stepped structure 13 can protrude towards the motor direction or away from the motor direction, which is not limited here.

[0052] In other embodiments, only the first protective plate 11 can be provided with the stepped structure 13, which protrudes away from the second protective plate 12 or protrudes towards the second protective plate 12 and the second protective plate 12 avoids the stepped structure 13. Only the second protective plate 12 can be provided with the stepped structure 13, which protrudes away from the first protective plate 11.

[0053] Referring to Figure 2 In some embodiments, the first protective plate 11 is provided with a plurality of first water leakage holes 110, and the second protective plate 12 avoids the first water leakage holes 110. The connecting member 20 and the protective member 10 jointly form a groove-shaped structure, and the first water leakage holes 110 can be used for quickly discharging the liquid retained in the groove-shaped structure, thereby avoiding rust of the motor protection structure. The sizes of the plurality of first water leakage holes 110 can be the same or different, and the shapes of the first water leakage holes 110 include but are not limited to circular, square, strip-shaped, etc.

[0054] Referring to Figure 1 and Figure 2Optionally, a plurality of second water leakage holes 120 are formed on the second protective plate 12, and the second water leakage holes 120 are communicated with the first water leakage holes 110 in the thickness direction of the second protective plate 12. The number of the second water leakage holes 120 is the same as that of the first water leakage holes 110, and each second water leakage hole 120 has the same size and shape as the first water leakage hole 110 communicated therewith, so as to facilitate processing and liquid leakage.

[0055] In other embodiments, the second water leakage holes 120 and the first water leakage holes 110 can be staggered in the up-down direction, and the first water leakage holes 110 can also be formed in the area not covered by the second protective plate 12. In this case, the number of the second water leakage holes 120 is less than that of the first water leakage holes 110.

[0056] In processing, the first protective plate 11 and the second protective plate 12 can be connected first, and then the protective piece 10 is perforated to form the first water leakage holes 110 on the first protective plate 11 and the second water leakage holes 120 on the second protective plate 12. The first water leakage holes 110 and the second water leakage holes 120 in the overlapping area of the first protective plate 11 and the second protective plate 12 have the same size and shape, and together form a through hole. Then the protective piece 10 is stamped to form the stepped structure 13. The through hole is formed at the time of stamping, and the stepped structure 13 formed at this time has a through hole on the platform. Stamping at the through hole can make the stress generated by the deformation of the protective piece 10 during stamping be absorbed through the through hole, thereby improving the flatness of other areas of the protective piece 10.

[0057] In some embodiments, a resilient member can also be arranged on the side of the second protective plate 12 away from the first protective plate 11. The resilient member can further buffer the impact force received by the protective piece 10, thereby improving the impact resistance of the motor protection structure. The resilient member avoids the through hole and the stepped structure 13, for example, the resilient member is arranged on the planar area between the plurality of through holes. The resilient member includes but is not limited to elastic pads (such as rubber pads, metal pads) and springs. When the resilient member is a spring, the two ends of the spring can be respectively abutted against the protective piece 10 and the motor housing.

[0058] The above is only a preferred embodiment of the present application, and only the technical principle of the present application is specifically described. These descriptions are only for explaining the principle of the present application, and cannot be interpreted as limiting the protection scope of the present application in any way. Based on the above explanation, any modification, equivalent replacement and improvement made within the spirit and principle of the present application, and other specific embodiments of the present application that can be conceived by those skilled in the art without creative labor, should be included in the protection scope of the present application.

Claims

1. A motor protection structure for protecting a motor in an electric drive axle, characterized in that, The motor protection structure includes: A protective component is located below the motor and covers the motor in the vertical direction. The protective component includes a first protective plate and a second protective plate stacked together. The connector includes at least two connecting portions connected to the edge of the protective member, the connecting portions being bent relative to the protective member toward the motor direction, and each of the connecting portions being connected to the electric drive axle.

2. The motor protection structure as described in claim 1, characterized in that, All of the aforementioned connecting parts are connected to the first protective plate.

3. The motor protection structure as described in claim 1, characterized in that, All of the connecting parts are integrally formed with the first protective plate.

4. The motor protection structure as described in claim 1, characterized in that, The second protective plate is installed on the side of the first protective plate closest to the motor.

5. The motor protection structure as described in claim 1, characterized in that, The second protective plate is elastic and can provide cushioning for vibrations of the first protective plate.

6. The motor protection structure as described in claim 1, characterized in that, The impact resistance of the second protective plate is greater than the preset value.

7. The motor protection structure as described in claim 1, characterized in that, The protective component has at least one stepped structure formed by stamping.

8. The motor protection structure as described in claim 1, characterized in that, The first protective plate has multiple first water leakage holes, and the second protective plate avoids the first water leakage holes.

9. The motor protection structure as described in claim 8, characterized in that, The second protective plate has multiple second drainage holes, which are connected to the first drainage holes in the thickness direction of the second protective plate.

10. A vehicle, characterized in that, The device includes a vehicle body, an electric drive axle, and a motor protection structure as described in any one of claims 1 to 9. The electric drive axle is connected to the bottom surface of the vehicle body and includes a motor and a transmission mechanism connected to the motor. The motor protection structure is connected to the transmission mechanism and covers the bottom of the motor.

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