CN217607608U - Motor end cover, motor and vehicle - Google Patents

Abstract

The utility model discloses a motor end cover, motor and vehicle, the motor end cover includes: the end cover comprises an end cover main body, a first positioning structure and a second positioning structure, wherein the end cover main body is provided with a bearing chamber, and the inner wall surface of the bearing chamber is provided with the first positioning structure; the bearing sleeve is installed in the bearing chamber, the material of the bearing sleeve is different from that of the inner circumferential surface of the bearing chamber, the bearing sleeve and the end cover main body are integrally formed, the bearing sleeve is suitable for being sleeved with a bearing of a motor, and the bearing sleeve is provided with a second limiting structure matched with the first limiting structure so as to limit the relative positions of the bearing sleeve and the end cover main body in the axial direction of the bearing sleeve and/or the circumferential direction of the bearing sleeve. According to the utility model discloses motor end cover and bearing cooperation are inseparabler, can eliminate motor end cover and bearing because of the produced adverse effect of material difference.

Description

Motor end cover, motor and vehicle

Technical Field

The utility model belongs to the technical field of the motor technique and specifically relates to a motor end cover, motor and vehicle are related to.

Background

The motor end cover in the related art is generally made of a single material, and is configured with a bearing chamber for receiving and mounting a bearing, but since the material of the bearing is different from that of the motor end cover, there is a problem in cooperation between the bearing and the motor end cover.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, an object of the utility model is to provide a motor end cover, this motor end cover is inseparabler with the bearing cooperation, can eliminate motor end cover and bearing because of the produced adverse effect of material difference.

The utility model also provides a motor of having above-mentioned motor end cover.

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

In order to achieve the above object, according to the present invention, a motor end cover is provided in an embodiment of a first aspect, including: the end cover comprises an end cover main body, a first positioning structure and a second positioning structure, wherein the end cover main body is provided with a bearing chamber, and the inner wall surface of the bearing chamber is provided with the first positioning structure; the bearing sleeve is installed in the bearing chamber, the material of the bearing sleeve is different from that of the inner circumferential surface of the bearing chamber, the bearing sleeve and the end cover main body are integrally formed, the bearing sleeve is suitable for being sleeved with a bearing of a motor, and a second limiting structure matched with the first limiting structure is constructed on the bearing sleeve so as to limit the relative positions of the bearing sleeve and the end cover main body in the axial direction of the bearing sleeve and/or the circumferential direction of the bearing sleeve.

According to the utility model discloses motor end cover and bearing cooperation are inseparabler, can eliminate motor end cover and bearing because of the produced adverse effect of material difference.

According to some embodiments of the invention, the coefficient of thermal expansion of the bearing housing is closer to the coefficient of thermal expansion of the outer ring of the bearing than the coefficient of thermal expansion of the inner circumferential surface of the bearing chamber.

According to some embodiments of the invention, the coefficient of thermal expansion of the bearing housing and the coefficient of thermal expansion of the outer ring of the bearing are the same.

According to some embodiments of the invention, the first limit structure is provided on an inner circumferential surface of the bearing housing, and the second limit structure is provided on an outer circumferential surface of the bearing housing; the first limiting structure is abutted against the second limiting structure in the axial direction of the bearing sleeve so as to limit the relative position of the bearing sleeve and the end cover main body in the axial direction of the bearing sleeve.

According to some embodiments of the invention, the first limit structure is provided on an inner circumferential surface of the bearing housing, and the second limit structure is provided on an outer circumferential surface of the bearing housing; the radian of the surface of the first limiting structure facing the outer peripheral surface of the bearing sleeve is different from the radian of the inner peripheral surface of the bearing chamber, and the radian of the surface of the second limiting structure facing the inner peripheral surface of the bearing chamber is different from the radian of the outer peripheral surface of the bearing sleeve; the first limiting structure and the second limiting structure are matched in the radial direction of the bearing sleeve to limit the relative positions of the bearing sleeve and the end cover main body in the circumferential direction of the bearing sleeve.

According to some embodiments of the invention, the first limit structure is provided on an inner circumferential surface of the bearing housing, and the second limit structure is provided on an outer circumferential surface of the bearing housing; the radian of the surface of the first limiting structure facing the outer peripheral surface of the bearing sleeve is different from the radian of the inner peripheral surface of the bearing chamber, and the radian of the surface of the second limiting structure facing the inner peripheral surface of the bearing chamber is different from the radian of the outer peripheral surface of the bearing sleeve; the first limiting structure is abutted against the second limiting structure in the axial direction of the bearing sleeve, and the first limiting structure and the second limiting structure are matched in the radial direction of the bearing sleeve to limit the relative positions of the bearing sleeve and the end cover main body in the axial direction and the circumferential direction of the bearing sleeve.

According to some embodiments of the invention, a surface of the first limit structure facing the outer circumferential surface of the bearing housing and a surface of the second limit structure facing the inner circumferential surface of the bearing chamber are both configured as planes.

According to some embodiments of the utility model, first limit structure protrusion in the inner peripheral surface of bearing room, second limit structure recess in the outer peripheral face of bearing housing.

According to some embodiments of the present invention, the first limit structure is in the axial dimension of the bearing chamber is smaller than the axial length of the bearing chamber, and the second limit structure is in the axial dimension of the bearing sleeve is smaller than the axial length of the bearing sleeve.

According to some embodiments of the utility model, first limit structure is for following a plurality of that the circumference interval of bearing room set up, second limit structure is for following a plurality of that the circumference interval of bearing housing set up, a plurality of first limit structure with second limit structure cooperates with one-to-one.

According to some embodiments of the present invention, the inner peripheral surface of the bearing chamber is configured with a third limit structure, and the third limit structure is stopped against one end of the bearing sleeve axially away from the first limit structure.

According to the utility model discloses a some embodiments, third limit structure is equipped with the via hole, the diameter of via hole is less than the diameter of bearing housing, the pivot of motor is followed the via hole stretches out.

According to some embodiments of the present invention, an inner peripheral surface of the one end of the bearing housing, which is axially away from the first limit structure, is configured with a ring edge, which abuts against the third limit structure.

According to some embodiments of the invention, the orientation of the bearing housing the end surface of the motor housing of the motor and the orientation of the bearing chamber the end surface of the motor housing of the motor are flush.

According to some embodiments of the invention, the first limit structure is adjacent to the orientation of the bearing chamber and the second limit structure is adjacent to the orientation of the bearing sleeve and the one end of the motor housing of the motor is arranged.

According to some embodiments of the utility model, the orientation of end cover main part one side of the motor casing of motor is equipped with the recess, the perisporium protrusion in of bearing chamber the diapire of recess, the outer peripheral face of bearing chamber is equipped with the edge a plurality of first strengthening ribs that the circumference interval of bearing chamber set up, every first strengthening rib with the diapire of recess is connected.

According to some embodiments of the utility model, the outer peripheral face of end cover main part is equipped with a plurality of casing mounting holes, casing mounting hole be suitable for with the motor casing of motor is connected, every casing mounting hole is in the relative both sides of circumference of end cover main part are equipped with the second strengthening rib, every the second strengthening rib is followed the radial extension of end cover main part.

According to some embodiments of the utility model, the end cover main part is equipped with lug and a plurality of suspension mounting hole, the suspension mounting hole be suitable for with automobile body connection, it is a plurality of the suspension mounting hole is followed the circumference interval of bearing room sets up, the suspension mounting hole is in the footpath of bearing room is located the bearing room with between the casing mounting hole, the lug is used for hoist and mount the end cover main part, the lug is in the footpath of bearing room is located the outside of casing mounting hole.

According to the utility model discloses a some embodiments, the end cover main part is equipped with temperature sensor pencil interface, changes pencil interface and high-pressure connector interface soon, temperature sensor pencil interface, change pencil interface and high-pressure connector interface soon are in the footpath of bearing room is located same one side.

According to the utility model discloses a second aspect embodiment provides a motor, include: a motor housing; a rotor and a stator mounted to the motor case; the rotating shaft is in transmission connection with the rotor; according to the motor end cover of the embodiment of the first aspect of the present invention, the motor end cover is connected to the motor housing, and the rotating shaft is inserted into the bearing sleeve; the bearing is arranged between the bearing sleeve and the rotating shaft.

According to the utility model discloses a motor of second aspect embodiment, through utilizing according to the utility model discloses a motor end cover of first aspect embodiment, motor end cover and bearing cooperation are inseparabler, can avoid the clearance volume between bearing and the bearing room too big, have the advantage of structural performance stability.

According to the utility model discloses a third aspect embodiment provides a vehicle, include according to the utility model discloses a motor of second aspect embodiment.

According to the utility model discloses a vehicle of third aspect embodiment, through utilizing according to the utility model discloses a second aspect embodiment the motor, the motor end cover is inseparabler with the bearing cooperation, can avoid the clearance volume between bearing and the bearing room too big, has the advantage of structural performance stability.

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

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural diagram of a motor end cover according to an embodiment of the present invention.

Fig. 2 is an exploded view of a motor end cover according to an embodiment of the present invention.

Fig. 3 is a schematic structural diagram of another view angle of the motor end cover according to the embodiment of the present invention.

Fig. 4 isbase:Sub>A sectional view atbase:Sub>A-base:Sub>A of fig. 3.

Fig. 5 is a detailed view at C of fig. 4.

Fig. 6 is a sectional view at B-B of fig. 3.

Fig. 7 is a schematic structural diagram of a bearing housing of a motor end cover according to an embodiment of the present invention.

Reference numerals are as follows:

a motor end cover 1,

The end cover comprises an end cover main body 100, a bearing chamber 110, a first reinforcing rib 111, a first limiting structure 120, a first rotation stopping surface 121, a first step 122, a third limiting structure 130, a through hole 131, a groove 140, a machine shell mounting hole 150, a second reinforcing rib 151, a lifting lug 160, a suspension mounting hole 170, a temperature sensor wire harness interface 180, a rotary transformer wire harness interface 190, a high-voltage connector interface 191, a first limiting structure 130, a first limiting structure 120, a first limiting structure 130, a second limiting structure 130, a through hole 131, a groove 140, a machine shell mounting hole 150, a second reinforcing rib 151, a lifting lug 160, a suspension mounting hole 170, a temperature sensor wire harness interface 180, a rotary transformer wire harness interface 190, a high-voltage connector interface 191, a second limiting structure,

Bearing housing 200, second limit structure 210, second surface 211, second step 212, ring edge 220.

Detailed Description

Embodiments of the present invention are described in detail below, and the embodiments described with reference to the drawings are exemplary.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present invention, "the first feature" and "the second feature" may include one or more of the features.

In the description of the present invention, "a plurality" means two or more.

The following describes a motor end cover 1 according to an embodiment of the present invention with reference to the drawings.

As shown in fig. 1 to 7, a motor end cover 1 according to an embodiment of the present invention includes an end cover main body 100 and a bearing housing 200. The motor end cover 1 can be an end cover of a generator or an end cover of a driving motor.

The end cap body 100 is provided with a bearing chamber 110, a first limit structure 120 is configured on the inner wall surface of the bearing chamber 110, a bearing sleeve 200 is mounted on the bearing chamber 110, the material of the bearing sleeve 200 is different from the material of the inner circumferential surface of the bearing chamber 110, the bearing sleeve 200 and the end cap body 100 are integrally formed, the bearing sleeve 200 is suitable for being sleeved with a bearing of a motor, and the bearing sleeve 200 is configured with a second limit structure 210 matched with the first limit structure 120 to limit the relative positions of the bearing sleeve 200 and the end cap body 100 in the axial direction of the bearing sleeve 200 and/or the circumferential direction of the bearing sleeve 200.

For example, the end cap body 100 may be integrally formed by high pressure casting, that is, the bearing sleeve 200 is placed in a mold before the end cap body 100 is cast, so that the bearing sleeve 200 and the end cap body 100 are formed at the same time and tightly combined.

According to the utility model discloses motor end cover 1, through being equipped with end cover main body 100 bearing room 110, bearing housing 200 is installed in bearing room 110, and bearing housing 200 is suitable for the cover to establish the bearing of motor, that is to say, bearing housing 200 and end cover main body 100 can be fixed together, and the outer lane of bearing can be installed together with bearing housing 200's inner peripheral surface interference fit, and the inner circle of bearing can rotate for the outer lane of bearing.

Furthermore, the inner wall surface of the bearing chamber 110 is configured with a first limiting structure 120, and the bearing sleeve 200 is configured with a second limiting structure 210 which is matched with the first limiting structure 120 to limit the relative position of the bearing sleeve 200 and the end cover main body 100 in the axial direction of the bearing sleeve 200 and/or the circumferential direction of the bearing sleeve 200, so that the bearing sleeve 200 can be more reliably fixed with the end cover main body 100, and the bearing sleeve 200 is prevented from rotating relative to the end cover main body 100, and the first limiting structure 120 is matched with the second limiting structure 210, and the bearing sleeve 200 can be prevented from moving axially relative to the end cover main body 100, so that the bearing sleeve 200 is prevented from shaking, the bearing sleeve 200 is prevented from being separated from the end cover main body 100, and the assembly between the bearing and the motor end cover 1 is more stable and reliable.

In addition, the material of the bearing sleeve 200 is different from the material of the inner circumferential surface of the bearing chamber 110, that is, the motor end cover 1 is made of different materials, so that the material of the bearing sleeve 200 can be changed according to the requirement of matching the bearing sleeve 200 and the bearing, and the adverse effect of the motor end cover 1 and the bearing caused by different materials can be eliminated.

Moreover, the bearing sleeve 200 and the end cover main body 100 can be formed into a whole, the structural strength of the bearing sleeve 200 can be greater than that of the end cover main body 100, and then the structural strength of the bearing chamber 110 can be enhanced by using the bearing sleeve 200, so that the structural strength of the motor end cover 1 is higher, the service life of the motor end cover 1 is prolonged, the connection strength between the bearing sleeve 200 and the end cover main body 100 is higher, and the bearing sleeve 200 is not easy to shift from the end cover main body 100.

So, according to the utility model discloses motor end cover 1 is inseparabler with the bearing cooperation, can eliminate motor end cover 1 and bearing because of the produced adverse effect of material difference.

In some embodiments of the present invention, the coefficient of thermal expansion of the bearing housing 200 is closer to the coefficient of thermal expansion of the outer ring of the bearing than the coefficient of thermal expansion of the inner circumferential surface of the bearing chamber 110.

For example, the thermal expansion coefficient of the bearing housing 200 may be smaller than that of the inner circumferential surface of the bearing chamber 110, and the thermal expansion coefficient of the bearing housing 200 is similar to that of the outer ring of the bearing.

For example, the end cap body 100 may be made of a low-cost material to reduce the cost of the end cap body 100, and the bearing sleeve 200 may be made of a material having a thermal expansion coefficient similar to that of the outer ring of the bearing.

Thus, even if the motor works under the working condition of high rotating speed (for example, the rotating speed is 15000 rpm) for a long time, the temperature of the bearing chamber 110 is higher, the size expansion amount of the bearing sleeve 200 is close to or the same as that of the outer ring of the bearing, and the bearing sleeve 200 and the outer ring of the bearing can be always stably and reliably matched, so that the overlarge gap between the outer ring of the bearing and the bearing sleeve 200 is avoided, the excessive deviation of the outer ring of the bearing in the axial direction of the outer ring of the bearing is avoided, and the normal use of the motor is ensured with the probability of damage of the bearing.

In addition, the yield strength of the material of the bearing sleeve 200 may be 355Mpa, the yield strength of the material of the end cover main body 100 may be 154Mpa, and the yield strength of the material of the bearing sleeve 200 is greater than the yield strength of the material of the end cover main body 100, so that the bearing sleeve 200 is increased, the strength of the bearing chamber 110 is enhanced, and the service life of the motor end cover 1 is prolonged.

In some embodiments of the present invention, the coefficient of thermal expansion of the bearing housing 200 is the same as the coefficient of thermal expansion of the outer race of the bearing.

Specifically, the material of the bearing sleeve 200 and the material of the outer ring of the bearing may be the same, or the material of the bearing sleeve 200 and the material of the outer ring of the bearing may be different, and the thermal expansion coefficient of the material of the bearing sleeve 200 and the thermal expansion coefficient of the material of the outer ring of the bearing are the same.

For example, the end cap body 100 may be made of aluminum, and the bearing housing 200 and the bearing may be made of steel. However, since the material of the bearing is different from that of the end cover main body 100, the coefficient of thermal expansion of the motor end cover 1 is approximately twice that of the bearing. Also, the end cap body 100 may be made of a low-cost material to reduce the price production cost of the end cap body 100, and the bearing housing 200 may be made of a material having the same thermal expansion coefficient as that of the outer ring of the bearing.

Therefore, even if the motor works under the working condition of high rotating speed (for example, the rotating speed is 15000 rpm) for a long time, the temperature of the bearing chamber 110 is higher, the size expansion amount of the bearing sleeve 200 is close to or equal to that of the outer ring of the bearing, and the bearing sleeve 200 and the outer ring of the bearing can be always stably and reliably matched, so that the overlarge gap between the outer ring of the bearing and the bearing sleeve 200 is avoided, the excessive deviation of the outer ring of the bearing in the axial direction of the outer ring of the bearing is avoided, and the normal use of the motor is ensured according to the damage probability of the bearing.

In addition, the yield strength of the material of the bearing sleeve 200 may be 355Mpa, the yield strength of the material of the end cover main body 100 may be 154Mpa, and the yield strength of the material of the bearing sleeve 200 is greater than the yield strength of the material of the end cover main body 100, so that the bearing sleeve 200 is increased, the strength of the bearing chamber 110 is enhanced, and the service life of the motor end cover 1 is prolonged.

In some embodiments of the present invention, as shown in fig. 2 and fig. 4 to fig. 7, the first limiting structure 120 is disposed on the inner circumferential surface of the bearing chamber 110, and the second limiting structure 210 is disposed on the outer circumferential surface of the bearing sleeve 200, so that the first limiting structure 120 is easier to contact and cooperate with the second limiting structure 210, thereby effectively fixing the relative positions of the bearing sleeve 200 and the bearing chamber 110.

Moreover, the first limiting structure 120 is abutted against the second limiting structure 210 in the axial direction of the bearing sleeve 200 to limit the relative position of the bearing sleeve 200 and the end cover main body 100 in the axial direction of the bearing sleeve 200, for example, one side of the first limiting structure 120 facing away from the motor casing of the motor can be abutted against the second limiting structure 210, and then the first limiting structure 120 limits the bearing sleeve 200 in the axial direction of the bearing sleeve 200, and through the cooperation of the first limiting structure 120 and the second limiting structure 210, the bearing sleeve 200 can be prevented from being separated from the bearing chamber 110 along the axial direction thereof, so that the connection between the bearing sleeve 200 and the bearing chamber 110 is more reliable.

In some embodiments of the present invention, as shown in fig. 2 and fig. 4 to fig. 7, the first limiting structure 120 is disposed on the inner circumferential surface of the bearing housing 110, the second limiting structure 210 is disposed on the outer circumferential surface of the bearing housing 200, the radian of the surface of the first limiting structure 120 facing the outer circumferential surface of the bearing housing 200 is different from the radian of the inner circumferential surface of the bearing housing 110, the radian of the surface of the second limiting structure 210 facing the inner circumferential surface of the bearing housing 110 is different from the radian of the outer circumferential surface of the bearing housing 200, and the first limiting structure 120 and the second limiting structure 210 are engaged with each other in the radial direction of the bearing housing 200 to define the relative positions of the bearing housing 200 and the end cover main body 100 in the circumferential direction of the bearing housing 200.

Specifically, the curvature of the surface of the first stopper structure 120 facing the outer circumferential surface of the bearing housing 200 may be greater than the curvature of the inner circumferential surface of the bearing chamber 110, or the curvature of the surface of the first stopper structure 120 facing the outer circumferential surface of the bearing housing 200 may be less than the curvature of the inner circumferential surface of the bearing chamber 110. Moreover, the radian of the surface of the second limiting structure 210 facing the inner circumferential surface of the bearing chamber 110 may be the same as the radian of the surface of the first limiting structure 120 facing the outer circumferential surface of the bearing sleeve 200, so that the first limiting structure 120 and the second limiting structure 210 can be tightly attached together, and further, because the radian of the outer surface of the second limiting structure 210 is different from the radian of the inner circumferential surface of the bearing chamber 110 except the first limiting structure 120, the second limiting structure 210 can only be correspondingly matched with the first limiting structure 120, so that the bearing sleeve 200 cannot rotate in the bearing chamber 110, and further the relative positions of the bearing sleeve 200 and the bearing chamber 110 in the circumferential direction of the bearing sleeve 200 are defined, thereby further improving the connection stability of the bearing sleeve 200 and the end cover main body 100, and being capable of preventing the bearing sleeve 200 and the bearing chamber 110 from being fooled.

In some embodiments of the present invention, as shown in fig. 2 and fig. 4 to fig. 7, the first limiting structure 120 is disposed on the inner circumferential surface of the bearing housing 110, the second limiting structure 210 is disposed on the outer circumferential surface of the bearing housing 200, the radian of the surface of the first limiting structure 120 facing the outer circumferential surface of the bearing housing 200 is different from the radian of the inner circumferential surface of the bearing housing 110, the radian of the surface of the second limiting structure 210 facing the inner circumferential surface of the bearing housing 110 is different from the radian of the outer circumferential surface of the bearing housing 200, the first limiting structure 120 abuts against the second limiting structure 210 in the axial direction of the bearing housing 200, and the first limiting structure 120 and the second limiting structure 210 cooperate in the radial direction of the bearing housing 200 to define the relative positions of the bearing housing 200 and the end cover main body 100 in the axial direction and the circumferential direction of the bearing housing 200.

For example, as shown in fig. 5 and 7, the first limiting structure 120 may include a first rotation stop surface 121 and a first step 122, the first rotation stop surface 121 may protrude from an inner circumferential surface of the bearing chamber 110, an arc of the first rotation stop surface 121 is different from an arc of the inner circumferential surface of the bearing chamber 110, a height difference exists between the first rotation stop surface 121 and the inner circumferential surface of the bearing chamber 110, so as to form the first step 122, and the first step 122 may extend in a radial direction of the bearing chamber 110.

And, the second limit structure 210 may include a second rotation stop surface 211 and a second step 212, where the second rotation stop surface 211 is recessed from the outer circumferential surface of the bearing housing 200 in a direction away from the bearing chamber 110, the radian of the second rotation stop surface 211 is different from the radian of the outer circumferential surface of the bearing housing 200, a height difference exists between the second rotation stop surface 211 and the outer circumferential surface of the bearing housing 200, so as to form the second step 212, and the second step 212 may extend in the radial direction of the bearing housing 200.

Thereby, the first rotation stop surface 121 and the second rotation stop surface 211 are contacted and stopped, so that the relative position of the bearing sleeve 200 and the end cover main body 100 in the circumferential direction of the bearing sleeve 200 can be defined, and the bearing sleeve 200 is prevented from rotating, and at the same time, the first step 122 and the second step 212 are contacted and stopped, so that the bearing sleeve 200 can be prevented from shifting in the axial direction thereof, so that the relative position of the bearing sleeve 200 and the end cover main body 100 in the axial direction of the bearing sleeve 200 is defined, and the bearing sleeve 200 is prevented from separating from the bearing chamber 110.

In some embodiments of the present invention, as shown in fig. 4 and 7, the surface of the first limit structure 120 facing the outer circumferential surface of the bearing housing 200 and the surface of the second limit structure 210 facing the inner circumferential surface of the bearing housing 110 are configured to be flat.

Like this, not only can make the radian on the surface of the outer peripheral face of first limit structure 120 towards bearing housing 200 inequality with the radian of the internal surface of bearing housing 110, and make the radian on the surface of the inner peripheral face of bearing housing 110 of second limit structure 210 inequality with the radian of the external surface of bearing housing 200, and the structure of first limit structure 120 and second limit structure 210's structure is simpler, manufacturing is more convenient, planar machining error is less, and first limit structure 120 and second limit structure 210 can laminate together more closely, in order to further improve the spacing effect to bearing housing 200.

In some embodiments of the present invention, as shown in fig. 4-7, the first position-limiting structure 120 protrudes from the inner circumferential surface of the bearing housing 110, and the second position-limiting structure 210 is recessed from the outer circumferential surface of the bearing housing 200.

That is, the first position-limiting structure 120 forms a height difference with the inner circumferential surface of the bearing chamber 110 in the radial direction of the bearing housing 110, and the second position-limiting structure 210 forms a height difference with the inner circumferential surface of the bearing housing 200 in the radial direction of the bearing housing 200, so that the first position-limiting structure 120 and the second position-limiting structure 210 can abut against each other in the radial direction of the bearing chamber 110, so as to limit the bearing housing 200 in the circumferential direction of the bearing housing 200, and prevent the bearing housing 200 from rotating with the end cap body 100, and the first position-limiting structure 120 and the second position-limiting structure 210 can abut against each other in the axial direction of the bearing chamber 110, so as to limit the bearing housing 200 in the axial direction of the bearing chamber 110, and prevent the bearing housing 200 from separating from the bearing chamber 110.

In some embodiments of the present invention, as shown in fig. 2 and 7, the dimension of the first limit structure 120 in the axial direction of the bearing chamber 110 is smaller than the axial length of the bearing chamber 110, and the dimension of the second limit structure 210 in the axial direction of the bearing sleeve 200 is smaller than the axial length of the bearing sleeve 200.

In this way, the volume of the first limiting structure 120 or the volume of the second limiting structure 210 can be prevented from being too large, so that the volume of the end cover main body 100 and the volume of the bearing sleeve 200 can be reduced, and the overall volume of the motor end cover 1 can be reduced.

Specifically, the axial length of the bearing sleeve 200 and the axial length of the bearing chamber 110 may be the same, so that the volume of the bearing chamber 110 may be prevented from being too large, the volume of the end cap body 100 may be reduced, the bearing sleeve 200 may be prevented from being exposed to the end cap body 100, and the connection between the bearing sleeve 200 and the end cap body 100 may be more reliable.

For example, the length of the first limiting structure 120 in the axial direction of the bearing housing 200 may be approximately half of the axial length of the bearing housing 200, and the length of the second limiting structure 210 in the axial direction of the bearing chamber 110 may be approximately half of the axial length of the bearing chamber 110, so that the lengths of the first limiting structure 120 and the second limiting structure 210 are not too small, and the structural strength of the first limiting structure 120 and the structural strength of the second limiting structure 210 are higher, which is beneficial to prolonging the service life of the bearing housing 200 and the bearing chamber 110.

In some embodiments of the present invention, as shown in fig. 2 and 7, the first limiting structures 120 are a plurality of limiting structures arranged along the circumferential interval of the bearing chamber 110, the second limiting structures 210 are a plurality of limiting structures arranged along the circumferential interval of the bearing sleeve 200, and the plurality of first limiting structures 120 and the plurality of second limiting structures 210 are matched in a one-to-one correspondence manner.

Therefore, the plurality of first limiting structures 120 and the plurality of second limiting structures 210 can fix the bearing sleeve 200 at multiple points in the circumferential direction of the bearing sleeve 200, the bearing chamber 110 and the bearing sleeve 200 further improve the connection strength between the inner circumferential wall of the bearing chamber 110 and the bearing sleeve 200, and the plurality of first limiting structures 120 and the plurality of second limiting structures 210 can be uniformly stressed, so that the single first limiting structure 120 or the single second limiting structure 210 is prevented from being damaged, and when one of the plurality of first limiting structures 120 or one of the plurality of second limiting structures 210 is damaged, the rest of the plurality of first limiting structures 120 and the rest of the plurality of second limiting structures 210 can still be stably matched to ensure the connection reliability of the bearing sleeve 200.

In some embodiments of the present invention, as shown in fig. 4 to 6, the inner circumferential surface of the bearing housing 110 is configured with a third limiting structure 130, and the third limiting structure 130 is stopped at one end of the bearing housing 200, which is far away from the first limiting structure 120 in the axial direction.

That is to say, the first limiting structure 120 is stopped to abut against one axial end of the bearing sleeve 200, the second limiting structure 210 is stopped to abut against the other axial end of the bearing sleeve 200, the bearing sleeve 200 is clamped by the first limiting structure 120 and the second limiting structure 210, and further the bearing sleeve 200 is limited in the axial direction of the bearing sleeve 200, so that the bearing sleeve 200 is prevented from being separated from the bearing chamber 110, the bearing sleeve 200 is prevented from shaking in the axial direction of the bearing chamber 110, and the fixing effect on the bearing sleeve 200 is better.

Further, as shown in fig. 4-6, the third limiting structure 130 is provided with a through hole 131, a diameter of the through hole 131 is smaller than a diameter of the bearing housing 200, and a rotating shaft of the motor extends out of the through hole 131.

Specifically, the diameter of via hole 131 is less than the external diameter of bearing housing 200, and bearing housing 200 just can stop to support in third limit structure 130 like this, avoids bearing housing 200 to wear out by via hole 131, and simultaneously, the pivot of motor can stretch out motor end cover 1 by via hole 131 to realize the power take off of motor, and in addition, third limit structure 130 can dodge the pivot of motor through via hole 131, avoids end cover main part 100 and the pivot of motor to take place the position interference, and the structure sets up more rationally.

In some embodiments of the present invention, as shown in fig. 4-7, the inner circumferential surface of the end of the bearing sleeve 200, which is far away from the first limiting structure 120 in the axial direction, is configured with a ring edge 220, and the ring edge 220 abuts against the third limiting structure 130.

For example, the inner diameter of the rim 220 is greater than the inner diameter of the third limiting structure 130.

Specifically, the ring edge 220 protrudes from the inner peripheral surface of the bearing sleeve 200, and one side of the ring edge 220 facing the third limiting structure 130 can be flush with one end of the bearing sleeve 200 facing the third limiting structure 130, so that the ring edge 220 does not increase the occupied space of the bearing sleeve 200 in the axial direction thereof, which is convenient for ensuring the installation volume of the end cover main body 100, and the ring edge 220 is arranged, which can improve the joint area of the bearing sleeve 200 and the third limiting structure 130, the stop-stop fit is more reliable, and the relative position stability of the bearing sleeve 200 and the bearing chamber 110 is further improved.

In some embodiments of the present invention, as shown in fig. 1, 4-6, the end surface of the bearing housing 200 facing the motor casing is flush with the end surface of the bearing chamber 110 facing the motor casing. Like this, can avoid bearing housing 200 protrusion in the one side of bearing chamber 110 towards the motor casing to can avoid bearing housing 200 and motor casing to take place the position interference, be convenient for the assembly connection between motor end cover 1 and the motor casing, and bearing housing 200 can cooperate with the bearing of motor reliably.

In some embodiments of the present invention, as shown in fig. 2, 4-6, the first limit structure 120 is disposed adjacent to an end of the bearing housing 110 facing the motor, and the second limit structure 210 is disposed adjacent to an end of the bearing housing 200 facing the motor.

In this way, by the cooperation of the first limiting structure 120 and the second limiting structure 210, the bearing sleeve 200 can be prevented from moving to a direction close to the motor casing and being separated from the bearing chamber 110, so that the bearing sleeve 200 can be prevented from being displaced in the axial direction thereof to define the relative position of the bearing sleeve 200 and the end cover main body 100 in the axial direction of the bearing sleeve 200.

In some embodiments of the present invention, as shown in fig. 1, 4 and 6, a groove 140 is formed on one side of the end cover main body 100 facing the motor casing of the motor, a peripheral wall of the bearing chamber 110 protrudes from a bottom wall of the groove 140, a plurality of first reinforcing ribs 111 are formed on an outer peripheral surface of the bearing chamber 110 at intervals in a circumferential direction of the bearing chamber 110, and each first reinforcing rib 111 is connected to the bottom wall of the groove 140.

Through setting up a plurality of first strengthening ribs 111, can improve the structural strength of bearing room 110, bearing room 110's atress bearing capacity is stronger, and bearing room 110 is difficult for taking place to warp or damaging like this to extension motor end cover 1's life, and recess 140's setting can dodge other structures of motor, and the holistic installation of motor is more reliable, can also reduce the weight of motor.

In some embodiments of the present invention, as shown in fig. 1-3, the outer circumferential surface of the end cap body 100 is provided with a plurality of case mounting holes 150.

The housing mounting holes 150 are adapted to be coupled to a motor housing of the motor, and each of the housing mounting holes 150 is provided with second reinforcing ribs 151 at circumferentially opposite sides of the end cap main body 100, and each of the second reinforcing ribs 151 extends in a radial direction of the end cap main body 100.

Specifically, end cover main body 100 can be connected with the motor casing of motor through a plurality of casing mounting holes 150 and be fixed together, and sets up a plurality of second strengthening ribs 151, can improve near structural strength of casing mounting hole 150 through second strengthening rib 151, and when the motor received mechanical shock, can reduce casing mounting hole 150's deflection, is favorable to promoting motor end cover 1's mode, and motor end cover 1 is difficult for taking place to warp.

In some embodiments of the present invention, as shown in fig. 1-3, the end cap body 100 is provided with a lifting lug 160 and a plurality of suspension mounting holes 170.

The suspension mounting holes 170 are suitable for being connected with a vehicle body, the plurality of suspension mounting holes 170 are arranged at intervals along the circumferential direction of the bearing chamber 110, and the suspension mounting holes 170 are arranged between the bearing chamber 110 and the machine shell mounting holes 150 in the radial direction of the bearing chamber 110, so that the suspension mounting holes 170 cannot interfere with the position of the bearing chamber 110 or the position of the machine shell mounting holes 150, and the plurality of suspension mounting holes 170 can fix the motor end cover 1 and the vehicle body together along the circumferential direction of the bearing chamber 110, thereby achieving better fixing effect and more reliable connection. Moreover, the lifting lug 160 is used for lifting the end cover main body 100, the lifting lug 160 is arranged on the outer side of the casing mounting hole 150 in the radial direction of the bearing chamber 110, and the lifting lug 160 does not interfere with the suspension mounting hole 170, so that the assembly of the motor end cover 1 is facilitated, and the production efficiency is improved.

In some embodiments of the present invention, as shown in fig. 1-3, the end cap body 100 is provided with a temperature sensor harness interface 180, a resolver harness interface 190, and a high-voltage connector interface 191, and the temperature sensor harness interface 180, the resolver harness interface 190, and the high-voltage connector interface 191 are located on the same side in the radial direction of the bearing housing 110.

For example, the temperature sensor harness interface 180 can be used for installing a temperature sensor harness, the temperature sensor harness can be used for transmitting a temperature signal of the motor, the resolver harness interface 190 can be used for installing a resolver harness, the resolver harness can be used for transmitting an angular displacement signal of the motor, the high-voltage connector interface 191 can be used for installing a high-voltage harness of the motor, and the high-voltage harness of the motor can be used for outputting current so that the motor works normally.

In addition, the temperature sensor wire harness interface 180, the rotary transformer wire harness interface 190 and the high-voltage connector interface 191 are arranged on the same radial side of the bearing chamber 110, so that the structure of the motor end cover 1 can be simplified, the processing and the manufacturing of the motor end cover 1 are facilitated, and meanwhile, the functions of the motor end cover 1 can be enriched, so that the integration level of the motor end cover 1 is improved.

The following describes a motor according to an embodiment of the present invention with reference to the drawings, the motor includes a motor housing, a rotor, a stator, a rotating shaft, a motor end cover 1 according to the above embodiment of the present invention, and a bearing. Wherein the motor can be a generator or a driving motor.

The rotor and the stator are installed on the motor shell, the rotating shaft is in transmission connection with the rotor, the motor end cover 1 is connected with the motor shell, the rotating shaft is inserted into the bearing sleeve 200, and the bearing is arranged between the bearing sleeve 200 and the rotating shaft. The outer ring of the bearing can be installed together with the inner circumferential surface of the bearing sleeve 200 in an interference fit manner, the rotating shaft can be installed together with the inner ring of the bearing in an interference fit manner, and the inner ring of the bearing can rotate relative to the outer ring of the bearing, so that friction between the rotating shaft and the bearing sleeve 200 can be reduced, and the rotating shaft can rotate more conveniently.

According to the utility model discloses motor, through utilizing according to the utility model discloses motor end cover 1 of above-mentioned embodiment, motor end cover 1 is inseparabler with the bearing cooperation, can avoid the clearance volume between bearing and the bearing room 110 too big, has the advantage that structural performance is stable.

A vehicle according to an embodiment of the present invention is described below with reference to the accompanying drawings, the vehicle including a motor according to the above-described embodiment of the present invention.

According to the utility model discloses vehicle, through utilizing according to the utility model discloses the motor of above-mentioned embodiment, motor end cover 1 is inseparabler with the bearing cooperation, can avoid the clearance volume between bearing and the bearing room 110 too big, has the advantage that structural performance is stable.

Other constructions and operations of the motor end cover 1 and the motor having the same according to the embodiments of the present invention are known to those skilled in the art and will not be described in detail herein.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (21)

1. An electric machine end cap, comprising:

the end cover comprises an end cover main body, a first positioning structure and a second positioning structure, wherein the end cover main body is provided with a bearing chamber, and the inner wall surface of the bearing chamber is provided with the first positioning structure;

the bearing sleeve is installed in the bearing chamber, the material of the bearing sleeve is different from that of the inner circumferential surface of the bearing chamber, the bearing sleeve and the end cover main body are integrally formed, the bearing sleeve is suitable for being sleeved with a bearing of a motor, and a second limiting structure matched with the first limiting structure is constructed on the bearing sleeve so as to limit the relative positions of the bearing sleeve and the end cover main body in the axial direction of the bearing sleeve and/or the circumferential direction of the bearing sleeve.

2. The motor end cover according to claim 1, wherein a thermal expansion coefficient of the bearing housing is closer to a thermal expansion coefficient of an outer ring of the bearing than a thermal expansion coefficient of an inner circumferential surface of the bearing chamber.

3. The motor end cap of claim 1, wherein the coefficient of thermal expansion of the bearing sleeve is the same as the coefficient of thermal expansion of the outer race of the bearing.

4. The motor end cover according to claim 1, wherein the first limit structure is arranged on the inner circumferential surface of the bearing chamber, and the second limit structure is arranged on the outer circumferential surface of the bearing sleeve;

the first limiting structure is abutted against the second limiting structure in the axial direction of the bearing sleeve so as to limit the relative position of the bearing sleeve and the end cover main body in the axial direction of the bearing sleeve.

5. The motor end cover according to claim 1, wherein the first limit structure is arranged on the inner circumferential surface of the bearing chamber, and the second limit structure is arranged on the outer circumferential surface of the bearing sleeve;

the radian of the surface of the first limiting structure facing the outer peripheral surface of the bearing sleeve is different from the radian of the inner peripheral surface of the bearing chamber, and the radian of the surface of the second limiting structure facing the inner peripheral surface of the bearing chamber is different from the radian of the outer peripheral surface of the bearing sleeve;

the first limiting structure and the second limiting structure are matched in the radial direction of the bearing sleeve to limit the relative positions of the bearing sleeve and the end cover main body in the circumferential direction of the bearing sleeve.

6. The motor end cover according to claim 1, wherein the first limit structure is arranged on the inner circumferential surface of the bearing chamber, and the second limit structure is arranged on the outer circumferential surface of the bearing sleeve;

the radian of the surface of the first limiting structure facing the outer peripheral surface of the bearing sleeve is different from the radian of the inner peripheral surface of the bearing chamber, and the radian of the surface of the second limiting structure facing the inner peripheral surface of the bearing chamber is different from the radian of the outer peripheral surface of the bearing sleeve;

the first limiting structure is abutted against the second limiting structure in the axial direction of the bearing sleeve, and the first limiting structure is matched with the second limiting structure in the radial direction of the bearing sleeve so as to limit the relative positions of the bearing sleeve and the end cover main body in the axial direction and the circumferential direction of the bearing sleeve.

7. The motor end cover according to claim 5 or 6, wherein a surface of the first stopper structure facing the outer circumferential surface of the bearing housing and a surface of the second stopper structure facing the inner circumferential surface of the bearing chamber are each configured as a plane.

8. The motor end cover of claim 1, wherein the first stop structure protrudes from an inner circumferential surface of the bearing housing, and the second stop structure is recessed from an outer circumferential surface of the bearing housing.

9. The motor end cover according to claim 1, wherein a dimension of the first limit structure in an axial direction of the bearing housing is smaller than an axial length of the bearing housing, and a dimension of the second limit structure in the axial direction of the bearing housing is smaller than the axial length of the bearing housing.

10. The motor end cover according to claim 1, wherein the first limit structures are a plurality of limit structures arranged at intervals in the circumferential direction of the bearing chamber, the second limit structures are a plurality of limit structures arranged at intervals in the circumferential direction of the bearing sleeve, and the first limit structures and the second limit structures are matched in a one-to-one correspondence manner.

11. The motor end cover according to claim 1, wherein the inner peripheral surface of the bearing chamber is configured with a third limit structure, and the third limit structure is stopped against one end of the bearing sleeve, which is far away from the first limit structure in the axial direction.

12. The motor end cover according to claim 11, wherein the third limiting structure is provided with a through hole, the diameter of the through hole is smaller than that of the bearing sleeve, and a rotating shaft of the motor extends out of the through hole.

13. The motor end cover according to claim 12, wherein an inner peripheral surface of an end of the bearing housing axially remote from the first limit structure is configured with a rim that abuts against the third limit structure.

14. The motor end cover of claim 1, wherein an end surface of the bearing housing facing the motor housing of the motor and an end surface of the bearing housing facing the motor housing of the motor are flush.

15. The motor end cap of claim 1, wherein the first stop feature is disposed adjacent an end of the bearing housing facing the motor casing, and the second stop feature is disposed adjacent an end of the bearing housing facing the motor casing.

16. The motor end cover according to claim 1, wherein a groove is formed in a side of the end cover main body facing a motor case of the motor, a circumferential wall of the bearing chamber protrudes from a bottom wall of the groove, and a plurality of first ribs are formed on an outer circumferential surface of the bearing chamber at intervals in a circumferential direction of the bearing chamber, each of the first ribs being connected to the bottom wall of the groove.

17. The motor end cover according to claim 1, wherein the outer peripheral surface of the end cover main body is provided with a plurality of housing mounting holes adapted to be connected to a motor housing of the motor, each of the housing mounting holes being provided with second reinforcing ribs on circumferentially opposite sides of the end cover main body, each of the second reinforcing ribs extending in a radial direction of the end cover main body.

18. The motor end cover according to claim 17, wherein the end cover main body is provided with a plurality of suspension mounting holes and a lifting lug, the suspension mounting holes are adapted to be connected with a vehicle body, the plurality of suspension mounting holes are arranged at intervals along the circumferential direction of the bearing chamber, the suspension mounting holes are arranged between the bearing chamber and the housing mounting holes in the radial direction of the bearing chamber, the lifting lug is used for lifting the end cover main body, and the lifting lug is arranged outside the housing mounting holes in the radial direction of the bearing chamber.

19. The motor end cover according to claim 1, wherein the end cover body is provided with a temperature sensor harness interface, a rotary transformer harness interface, and a high-voltage connector interface, the temperature sensor harness interface, the rotary transformer harness interface, and the high-voltage connector interface being located on the same side in a radial direction of the bearing chamber.

20. An electric machine, comprising:

a motor casing;

a rotor and a stator mounted to the motor case;

the rotating shaft is in transmission connection with the rotor;

the motor end cap according to any one of claims 1-19, being connected to the motor housing, the shaft being inserted into the bearing housing;

the bearing is arranged between the bearing sleeve and the rotating shaft.

21. A vehicle characterized by comprising an electric machine according to claim 20.

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