CN215733893U - Motor heat abstractor and motor - Google Patents

Abstract

The utility model provides a motor heat dissipation device and a motor, and relates to the technical field of motors. The motor heat dissipation device comprises a heat dissipation fan, a balance piece and a balance weight body. The cooling fan comprises a rotating body and a plurality of fan blades, wherein the rotating body is provided with a mounting surface, and the plurality of fan blades are arranged on the mounting surface at intervals. The balancing piece is fixed at the one end that the flabellum kept away from the installation face, and the counterweight body detachably connects in the balancing piece. The utility model also provides a motor, which adopts the motor heat dissipation device. The motor heat dissipation device and the motor provided by the utility model can improve the production efficiency of motor correction dynamic balance.

Description

Motor heat abstractor and motor

Technical Field

The utility model relates to the technical field of motors, in particular to a motor heat dissipation device and a motor.

Background

In order to reduce noise and vibration indexes of the motor, the motor rotor needs to correct dynamic balance, and the requirement for the unbalance amount of the motor rotor is increased along with the increase of the rotating speed of the motor.

At present, the conventional method for correcting dynamic balance of a motor is to correct the dynamic balance by a method of drilling a hole and balancing a fan at the front end of the motor and adding a balance ring and a balance weight at the rear end of the motor, wherein the balance weight is fixed by a bolt. The method for drilling the counterweight on the front-end fan needs to drill a counterweight balance amount mounting hole (counterweight hole for short) on site during the correction of dynamic balance, so that the method needs to spend a lot of working hours and has low production efficiency.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a motor heat dissipation device which can improve the production efficiency of motor correction dynamic balance.

The object of the utility model is also to provide a motor which can improve the production efficiency of the motor for correcting dynamic balance.

Embodiments of the utility model may be implemented as follows:

the embodiment of the utility model provides a motor heat dissipation device, which comprises a heat dissipation fan, a balance piece and a counterweight body, wherein the heat dissipation fan is arranged on the balance piece;

the heat dissipation fan comprises a rotating main body and a plurality of fan blades, wherein the rotating main body is provided with an installation surface, and the plurality of fan blades are arranged on the installation surface at intervals;

the balancing piece is fixed at one end, far away from the mounting surface, of the fan blade, and the counterweight body is detachably connected to the balancing piece.

Compared with the prior art, the motor heat dissipation device provided by the utility model has the beneficial effects that:

on the radiator fan among this motor heat abstractor, directly keep away from the one side of rotating the main part with the fixed setting of balancing piece at a plurality of flabellums, carrying out radiator fan and proofreaying and correct the in-process of dynamic balance, can directly be connected the dynamic balance of realizing radiator fan through dismantling of balancing weight and balancing piece and proofreaies and correct, realize the proofreaies and correct the dynamic balance of motor from this, saved the process steps that need trompil in addition on the fan, can improve the efficiency that the dynamic balance was proofreaied and correct to the motor.

Optionally, the fan blades are arranged along the circumferential path at equal intervals; the balancing piece is annular, and is a plurality of the flabellum all with balancing piece fixed connection just makes the centre of a circle of balancing piece and a plurality of the flabellum the centre of a circle coincidence of circular path.

Optionally, the width of the fan blade along the radial direction of the circle surrounded by the balance member is larger than the width of the balance member.

Optionally, the balancing member is disposed near the fan blade along an outer side of a radial direction in which the balancing member encloses a circle.

Optionally, a plurality of mounting holes are formed in the balance piece, and the counterweight body is detachably matched with the mounting holes.

Optionally, the balance member is welded to a side of the fan blade away from the mounting surface.

Optionally, the fan blades are arranged perpendicular to the mounting surface.

Optionally, a plurality of the fan blades are integrally formed with the rotating body.

Optionally, the fan blades are formed by bending relative to the rotating main body, a plurality of first through holes corresponding to the fan blades are formed in the rotating main body, and each through hole is located on one side of the corresponding fan blade along the clockwise direction or the anticlockwise direction.

A motor comprises a motor heat dissipation device. The motor heat dissipation device comprises a heat dissipation fan, a balance piece and a counterweight body;

the heat dissipation fan comprises a rotating main body and a plurality of fan blades, wherein the rotating main body is provided with an installation surface, and the plurality of fan blades are arranged on the installation surface at intervals;

the balancing piece is fixed at one end, far away from the mounting surface, of the fan blade, and the counterweight body is detachably connected to the balancing piece.

The utility model also provides a motor, the motor adopts the motor heat dissipation device, and the beneficial effects of the motor relative to the prior art are the same as the beneficial effects of the motor heat dissipation device relative to the prior art, and are not repeated herein.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a first view angle of a motor heat dissipation device provided in an embodiment of the present application;

fig. 2 is a schematic structural diagram of a first view angle of a heat dissipation fan according to an embodiment of the present disclosure;

fig. 3 is a schematic structural diagram of a second view angle of the cooling fan in the embodiment of the present application;

fig. 4 is a schematic structural diagram of a second view angle of the motor heat dissipation device provided in the embodiment of the present application.

Icon: 10-a motor heat sink; 100-a heat dissipation fan; 110-a rotating body; 101-a mounting surface; 111-a via; 112-shaft hole; 113-a keyway; 120-fan blades; 200-a balance member; 210-mounting holes.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. are used for indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually placed when the utility model is used, it is only for convenience of describing the present invention and simplifying the description, but it is not necessary to indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation and be operated, and thus, it should not be construed as limiting the present invention.

Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.

Embodiments of the present application provide an electric machine (not shown) that may be configured to convert electrical energy to kinetic energy and further configured to output kinetic energy outwardly to drive an actuator drivingly connected to the electric machine. Before the motor is put into use, the dynamic balance of the motor needs to be corrected to ensure the stable operation of the motor; if the difference between the dynamic balance of the motor and the standard dynamic balance exceeds a preset threshold, the motor may shake or even be damaged.

In the prior art, the dynamic balance of the motor is corrected by a method of drilling a hole on the front end of the motor by a fan and adding a balance ring on the rear end of the motor by a balance weight, and the balance weight is fixed by a bolt. The method of drilling the counterweight on the front end fan requires the on-site drilling of the counterweight balance weight mounting hole 210 (counterweight hole for short) during the correction of the dynamic balance, which requires a lot of man-hours and has low production efficiency.

In order to improve the above problem and achieve the purpose of improving the efficiency of correcting dynamic balance of the motor, the motor heat dissipation device 10 and the motor using the motor heat dissipation device 10 of the present application are provided. Referring to fig. 1 and 4, the heat dissipating apparatus 10 for a motor includes a heat dissipating fan 100, a balance member 200, and a weight (not shown). In the process of the rotation of the motor, the heat dissipation fan 100 is coaxially disposed with a rotation shaft (not shown) of the motor, so that the heat dissipation fan 100 rotates along with the rotation shaft of the motor in the process of the operation of the motor, in other words, a counterweight can be disposed on the heat dissipation fan 100 to achieve the purpose of adjusting the dynamic balance of the motor. The balance member 200 is connected to the heat dissipation fan 100, and the heat dissipation fan 100 drives the balance member 200 to rotate in the process that the heat dissipation fan 100 rotates along with the rotating shaft of the motor; in other words, the balancing member 200 is weighted to adjust the rotational balance of the heat dissipation fan 100, thereby achieving a film stack for adjusting the dynamic balance of the motor. In addition, the weight body is detachably connected to the balance member 200. That is, in the embodiment of this application, in the course of carrying out the dynamic balance correction of motor, if the motor needs the counter weight so that the dynamic balance reaches standard level, can increase on balancing piece 200 and set up the balancing weight to realize the purpose of adjusting motor dynamic balance.

As described above, in the heat dissipation fan 100 of the motor heat dissipation device 10, the balance member 200 is directly fixed and disposed on one side of the plurality of fan blades 120 away from the rotating main body 110, and in the process of correcting the dynamic balance of the heat dissipation fan 100, the dynamic balance correction of the heat dissipation fan 100 can be directly realized by detachably connecting the counterweight member and the balance member 200, so that the corrected dynamic balance of the motor is realized, the process steps of additionally forming holes in the fan are saved, and the efficiency of correcting the dynamic balance of the motor can be improved.

Referring to fig. 1, fig. 2 and fig. 3, the heat dissipation fan 100 includes a rotating body 110 and a plurality of blades 120, the rotating body 110 has a mounting surface 101, and the plurality of blades 120 are disposed on the mounting surface 101 at intervals. The balance member 200 is fixed to an end of the fan blade 120 away from the mounting surface 101, and the weight body is detachably connected to the balance member 200. The balance member 200 is fixedly mounted at an end of the fan blade 120 away from the mounting surface 101, that is, the rotating body 110 and the balance member 200 are respectively located at two opposite sides of the fan blade 120, so that the balance member 200 can be prevented from affecting the purpose of generating airflow by the heat dissipation fan 100, and the heat dissipation fan 100 can be ensured to provide an effective heat dissipation effect for the motor. Moreover, since the balance member 200 is disposed on a side of the fan blade 120 away from the rotating body 110, the balance member 200, the counterweight and the rotating body 110 can achieve weight balance on two sides of the fan blade 120, thereby ensuring the stability of the rotation of the heat dissipating fan 100.

Optionally, the balance member 200 is welded to the side of the fan blade 120 away from the mounting surface 101. In other words, in the embodiment of the present application, the balance member 200 may be fixed to the fan blade 120 by welding. Of course, in other embodiments of the present application, the balance member 200 and the plurality of fan blades 120 may be connected to each other in other manners, for example, the balance member 200 is fastened to the fan blades 120 by a snap-fit manner; for another example, the balance member 200 is fixed to the fan blade 120 by means of a screw connection; for another example, the balance member 200 and the plurality of blades 120 are integrally formed.

In some embodiments of the present application, the plurality of blades 120 are arranged along the circumferential path at equal intervals, but it can be regarded that the plurality of blades 120 surround the mounting surface 101 to form a circle. Optionally, in some embodiments of the present application, each of the fan blades 120 is a flat plate, and the plane of each of the fan blades 120 passes through the center of the circular path, so that the fan blades 120 effectively generate an air flow in the process of rotating along the rotating body 110; moreover, by this arrangement, the balance member 200 can be conveniently fixed on the side of the fan blade 120 away from the rotating body 110. Of course, in other embodiments of the present application, the plurality of blades 120 may be disposed in other manners, for example, the plurality of blades 120 are all arc-shaped; for example, the plurality of blades 120 forms an acute angle with the diameter of the circumferential path.

On the basis, the balancing member 200 is annular, and the plurality of blades 120 are all fixedly connected with the balancing member 200, so that the center of the circle of the balancing member 200 coincides with the center of the circle of the circumferential path of the plurality of blades 120. During the rotation of the rotating body 110, the rotation center of the plurality of blades 120 is the center of a circle of a circumferential path surrounded by the plurality of blades 120; similarly, when the balance member 200 rotates along with the plurality of fan blades 120, the balance member 200 also rotates around its own center; the center of rotation of the balancer 200 coincides with the center of rotation of the plurality of blades 120. Through this arrangement, it is possible to prevent the rotational balance of the plurality of blades 120 from being affected due to the arrangement of the balance member 200, so that the plurality of blades 120 can uniformly share the weight of the balance member 200, thereby ensuring that the plurality of blades 120 can stably rotate.

It should be noted that, in other embodiments of the present application, the balancing member 200 may also be disposed in other manners, for example, the balancing member 200 is divided into multiple sections, for example, the balancing member 200 is divided into two sections with the same length and the same weight, wherein one section of the balancing member 200 is connected to a portion of the fan blades 120, and the other section of the balancing member 200 is connected to the other portion of the fan blades 120. Of course, the balance member 200 may be divided into a greater number, and some of the blades 120 may not be connected to the balance member 200, and only when the balance member 200 is mounted on the blades 120, it is required to ensure that the blades 120 are balanced during the rotation process, so as to ensure that the heat dissipation fan 100 is balanced in the circumferential direction, and ensure that the heat dissipation fan 100 can stably rotate in the circumferential direction.

In addition, in some embodiments of the present application, the width of the fan blade 120 in the radial direction of the balance member 200 enclosing the circle is greater than the width of the balance member 200. In other words, based on a circle surrounded by the plurality of blades 120, the extension length of the blades 120 in the radial direction of the circle is greater than the width of the balance member 200 in the radial direction of the circle. Therefore, each fan blade 120 can be exposed from the hole surrounded by the balance member 200, so as to facilitate the airflow generated by the fan blade 120 to flow, and the weight of the balance member 200 can be reduced, thereby preventing the load of the heat dissipation fan 100 on the motor from being increased due to the excessive weight of the balance member 200 on the heat dissipation fan 100.

Of course, in other embodiments of the present application, the setting width of the balance member 200 may also be designed according to practical requirements, for example, in a case that the heat dissipation fan 100 is small, in order to facilitate the counterweight block to be detachably connected to the balance member 200, the width of the balance member 200 may be set to be equal to the extension length of the fan in the radial direction of the center of the circle.

Alternatively, the balance member 200 is disposed near the fan blades 120 on the outer side in the radial direction in which the balance member 200 encloses a circle. In other words, the plurality of blades 120 are exposed from the hole surrounded by the balance member 200 at the inner side in the radial direction of the rotating body 110, so that the blades 120 can guide the airflow to pass through the hole surrounded by the balance member 200 in the process of rotating along with the rotating body 110, thereby ensuring that the airflow generated by the heat dissipation fan 100 is concentrated at the rotating shaft, improving the heat dissipation effect on the motor and improving the heat dissipation efficiency.

It should be noted that the diameter of the circle formed by the outer circumference of the balancing member 200 is slightly larger than the diameter of the circle formed by the outer sides of the plurality of blades 120. Of course, in other embodiments of the present application, the circle formed by the outer circumference of the balancing member 200 may coincide with the circle formed by the outer sides of the plurality of blades 120, or the diameter of the center of the circle formed by the outer circumference of the balancing member 200 may be slightly smaller than the diameter of the circle formed by the outer sides of the plurality of blades 120.

In order to facilitate the detachable connection of the balancing weight and the balancing member 200, in some embodiments of the present application, a plurality of mounting holes 210 are formed on the balancing member 200, and the balancing weight is detachably matched with the mounting holes 210. It should be noted that, the weight member may be a bolt structure, and the bolt structure may be detachably connected to the balancing member 200 through the mounting hole 210. In the process that the balancing member 200 rotates along with the fan blades 120, the balancing member 200 and the rotating body 110 rotate on the same plane, so that the balancing weight is abutted against the inner peripheral wall of the mounting hole 210 under the action of centrifugal force, and the stability of the balancing weight can be ensured.

In the prior art, the balance structure is disposed on the outer circumference of the plurality of fan blades 120, and the balance weight is disposed on the balance structure, on this basis, in the process of rotating the balance structure, due to the centrifugal force, the balance weight moves or loosens, thereby causing the damage of the dynamic balance, and thereby possibly causing the shaking or the fault damage of the motor.

Compared with the prior art, in the embodiment of the present application, since the balancing member 200 is parallel to the rotation plane, the acting force between the balancing member 200 and the counterweight block extends along the radial direction of the counterweight during the rotation of the balancing member 200, so as to prevent the counterweight block from loosening; in addition, a limiting effect can be provided for the balancing weight through the inner peripheral wall of the mounting hole 210, so that the movement of the balancing weight can be limited, the shifting of the balancing weight can be avoided, and the stability of the balancing weight can be ensured; in other words, after the dynamic balance correction of the motor is completed through the counterweight, the stable dynamic balance of the motor can be maintained for a long time, thereby ensuring the stable operation of the motor.

It should be understood that in other embodiments of the present application, the weight may also take other configurations, such as magnetic configurations; or a structure having adhesive properties, which can be directly bonded to the balance member 200; still alternatively, the weight member may be a cylindrical metal plug that is inserted into the mounting hole 210 so as to be interference-fitted with the mounting hole 210, or the like.

In order to facilitate the connection of the fan blade 120 and the balance member 200, in some embodiments of the present disclosure, the fan blade 120 is disposed perpendicular to the mounting surface 101, so that the side surface of the fan blade 120 can be welded to the balance member 200, thereby facilitating the welding of the balance member 200 and also improving the welding stability of the balance member 200. In addition, since the balance member 200 is welded to the side surface of the fan blade 120, deformation of the fan blade 120 due to welding can be reduced, thereby ensuring a balanced mass of the plurality of fan blades 120 and ensuring rotational stability of the heat dissipation fan 100. Of course, in other embodiments of the present application, fan blades 120 may also be angled with respect to mounting surface 101.

In addition, in some embodiments of the present application, the plurality of blades 120 are integrally formed with the rotating body 110. Of course, in other embodiments, the plurality of blades 120 may also be connected to the rotating body 110 by welding, or the blades 120 may also be mounted on the rotating body 110 by plugging or screwing.

In some embodiments of the present disclosure, on the basis that the rotating body 110 and the fan blades 120 are integrally formed, the fan blades 120 are formed by bending relative to the rotating body 110, and a plurality of first through holes 111 corresponding to the respective fan blades 120 are formed on the rotating body 110, and each through hole 111 is located on one side of the corresponding fan blade 120 along a clockwise direction or a counterclockwise direction. In other words, the plurality of blades 120 may be formed by stamping the disc-shaped rotating body 110 to form the plurality of blades 120, and in the stamping process, the rotating body 110 is partially stamped and bent to form the blades 120, and at the same time, the through holes 111 are formed on one side of the blades 120. Of course, in order to facilitate the formation of a plurality of fans arranged in an orderly manner and the formation of a plurality of through holes 111 arranged in an orderly manner, the rotating body 110 may be cut to form a tongue body before the fans are formed by stamping; thereby directly bending the tongue to form the fan blade 120 during the stamping process. Of course, in other embodiments of the present application, after the tongue is formed, the fan blades 120 may be formed in other manners, such as manually bending the tongue to form the fan blades 120.

In addition, in the embodiment of the present application, a shaft hole 112 is further opened at the middle of the rotating body 110, and the shaft hole 112 is configured to be mounted on the rotating shaft of the motor, so that the rotating body 110 can rotate along with the rotating shaft of the motor. In addition, a key groove 113 is formed on the peripheral wall of the shaft hole 112 to facilitate the rotational engagement of the rotating shaft with the rotating body 110.

To sum up, in the motor heat dissipation device 10 and the motor provided in the embodiment of the present application, the balance member 200 is directly fixed to be disposed on one side of the plurality of fan blades 120 away from the rotating main body 110, and in the process of correcting the dynamic balance of the heat dissipation fan 100, the dynamic balance correction of the heat dissipation fan 100 can be directly realized through the detachable connection of the balancing weight and the balance member 200, so that the corrected dynamic balance of the motor is realized, the process steps of additionally forming the hole on the fan are saved, and the efficiency of correcting the dynamic balance of the motor can be improved.

The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims (10)

1. A motor heat dissipation device is characterized by comprising a heat dissipation fan, a balance piece and a counterweight body;

the heat dissipation fan comprises a rotating main body and a plurality of fan blades, wherein the rotating main body is provided with an installation surface, and the plurality of fan blades are arranged on the installation surface at intervals;

the balancing piece is fixed at one end, far away from the mounting surface, of the fan blade, and the counterweight body is detachably connected to the balancing piece.

2. The motor heat sink of claim 1, wherein the plurality of fan blades are arranged along the circumferential path at equal intervals; the balancing piece is annular, and is a plurality of the flabellum all with balancing piece fixed connection just makes the centre of a circle of balancing piece and a plurality of the flabellum the centre of a circle coincidence of circular path.

3. The heat sink for motor according to claim 2, wherein the width of the fan blade along the radial direction of the circle surrounded by the balance member is larger than the width of the balance member.

4. The motor heat sink according to claim 3, wherein the balance member is disposed adjacent to the fan blades along an outer side of a radial direction in which the balance member encloses a circle.

5. The motor heat sink according to any one of claims 1 to 4, wherein the balance member has a plurality of mounting holes, and the weight is detachably engaged with the mounting holes.

6. The motor heat sink according to any one of claims 1-4, wherein the balance member is welded to a side of the fan blade away from the mounting surface.

7. The motor heat sink of claim 1, wherein the fan blades are disposed perpendicular to the mounting surface.

8. The motor heat sink as claimed in claim 1, wherein the plurality of fan blades are integrally formed with the rotating body.

9. The heat sink for motor according to claim 8, wherein the fan blades are formed by bending with respect to the rotating body, and a plurality of first through holes corresponding to the respective fan blades are formed on the rotating body, and each through hole is located on one side of the corresponding fan blade along clockwise or counterclockwise direction.

10. An electric machine comprising a heat sink for an electric machine according to any one of claims 1 to 9.

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