Motor casing structure and motor

Abstract

The invention provides a motor casing structure and a motor, the motor casing structure comprises a casing and a heat dissipation mechanism, the heat dissipation mechanism comprises a heat conduction member, a heat dissipation member and a heat dissipation fan; the heat dissipation piece is arranged on the outer side of the machine shell. One end of the heat conduction piece is in contact with the heat dissipation piece, and the other end of the heat conduction piece extends into the machine shell; the other end of the heat conduction piece is used for being in contact with a heating piece, located in the machine shell, on the motor so that heat of the heating piece can be transmitted to the heat dissipation piece. And the heat dissipation fan is used for blowing air to the heat dissipation piece for heat dissipation. According to the invention, heat on the heating element in the motor is transferred to the heat dissipation element on the outer side of the shell by arranging the heat conduction element, and then the heat dissipation element is blown to dissipate heat through the heat dissipation fan, so that the cooling treatment of the heating element in the motor can be realized, the damage of the heating element due to long-time operation is prevented, and the service life of the heating element in the motor is prolonged.

Description

Technical Field

[0001] This invention belongs to the field of motor heat dissipation technology, specifically relating to a motor housing structure and a motor. Background Technology

[0002] A servo motor is a motor that controls the operation of mechanical components in a servo system. It is an auxiliary motor with indirect speed change. Servo motors can control speed and position with very high accuracy. They can convert voltage signals into torque and speed to drive the controlled object. The rotor speed of a servo motor is controlled by the input signal and can respond quickly.

[0003] In servo motor applications, internal heat-generating components such as front and rear bearings and stator are affected by the heat generated by the rotation of the motor shaft and the current. These heat-generating components are prone to damage during long-term operation, such as bearing failure and stator coil aging. Therefore, how to cool down these internal heat-generating components has become a problem that needs to be solved by those skilled in the art. Summary of the Invention

[0004] Therefore, the present invention provides a motor housing structure and a motor, and the main technical problem to be solved is: how to cool down the heat-generating components inside the motor.

[0005] To address the above problems, the present invention provides a motor housing structure, which includes a housing and a heat dissipation mechanism, wherein the heat dissipation mechanism includes a heat-conducting component, a heat dissipation component, and a cooling fan.

[0006] The heat sink is disposed on the outside of the housing; one end of the heat conductor is in contact with the heat sink, and the other end of the heat conductor extends into the housing; wherein, the other end of the heat conductor is used to contact the heat-generating component on the motor inside the housing, so as to transfer the heat of the heat-generating component to the heat sink.

[0007] The cooling fan is used to blow air to dissipate heat from the heat sink.

[0008] In some embodiments, when the heating element is a bearing, the bearing has a first end and a second end opposite each other along the axial direction; the housing is provided with a support platform for supporting the first end of the bearing; the other end of the heat-conducting element has a first heat-conducting portion for contacting the second end of the bearing through the first heat-conducting portion;

[0009] The heat dissipation mechanism further includes a driving mechanism, which is used to push the first heat-conducting part so that the first heat-conducting part applies an adjustable preload force to the second end.

[0010] In some embodiments, the drive mechanism includes a power mechanism, a cam, and an elastic structure; the cam abuts against one end of the elastic structure, and the other end of the elastic structure abuts against the end of the first heat-conducting part away from the bearing; wherein the drive mechanism drives the cam to rotate through the power mechanism, thereby causing the elastic structure to push the first heat-conducting part.

[0011] In some embodiments, the power mechanism includes a rocker arm and a first transmission gear set. The rocker arm is rotatable and connected to the input end of the first transmission gear set. The output end of the first transmission gear set is connected to the axle of the cam. When the rocker arm rotates, it drives the axle of the cam to rotate through the first transmission gear set, thereby driving the cam to rotate.

[0012] In some embodiments, the elastic structure includes a connecting block and an elastic element, the elastic element being disposed at one end of the connecting block, wherein the end of the connecting block opposite to the elastic element serves as one end of the elastic structure, and the end of the elastic element opposite to the connecting block serves as the other end of the elastic structure.

[0013] In some embodiments, the other end of the heat-conducting element further has a second heat-conducting portion, the other end of the heat-conducting element being used to contact the radial outer side of the bearing through the second heat-conducting portion;

[0014] The driving mechanism is also used to drive the second heat-conducting part to move, so that the distance between the second heat-conducting part and the radial outer side of the bearing is adjustable.

[0015] In some embodiments, the driving mechanism includes a power mechanism, a cam, and an elastic structure, with the cam abutting one end of the elastic structure and the other end of the elastic structure abutting the end of the first heat-conducting part away from the bearing; the driving mechanism drives the cam to rotate via the power mechanism, thereby causing the elastic structure to push the first heat-conducting part; and the power mechanism includes a rocker arm and a first transmission gear set, the rocker arm being rotatable and connected to the input end of the first transmission gear set, the output end of the first transmission gear set being connected to the wheel axle of the cam; when the rocker arm is rotated, it drives the wheel axle of the cam to rotate via the first transmission gear set, thereby driving the cam to rotate.

[0016] The driving mechanism further includes a second transmission gear set, a limiting structure, a lead screw, and a nut seat threaded onto the lead screw. The rocker arm is connected to the input end of the second transmission gear set, the output end of the second transmission gear set is connected to the lead screw, and the nut seat is connected to the second heat-conducting part. When the rocker arm is rotated, it drives the lead screw to rotate through the second transmission gear set, causing the nut seat to move along the lead screw under the limiting structure, thereby driving the second heat-conducting part to move.

[0017] In some embodiments, the second transmission gear set is detachable.

[0018] In some embodiments, the second transmission gear set includes a first transmission gear for mounting on the rocker arm and a second transmission gear for mounting on the lead screw, wherein the first transmission gear meshes with the second transmission gear, the first transmission gear serves as the input end of the second transmission gear set, and the second transmission gear serves as the output end of the second transmission gear set; wherein the first transmission gear and / or the second transmission gear are detachable, so that the second transmission gear set is detachable.

[0019] In some embodiments, the first transmission gear is a two-half structure, and the two halves of the first transmission gear are detachably mounted on the rocker arm by splicing; and / or, the second transmission gear is a two-half structure, and the two halves of the second transmission gear are detachably mounted on the lead screw by splicing.

[0020] In some embodiments, the housing is provided with a through hole through which the other end of the heat-conducting component passes, and the nut seat is sleeved in the through hole and slidably engaged with the through hole; wherein, the wall of the through hole forms the limiting structure.

[0021] In some embodiments, the heat-conducting element is configured to extend and retract along the direction of movement of the second heat-conducting portion.

[0022] In some embodiments, the heat-conducting component includes a heat-conducting pipe and a heat-conducting plate, with one end of the heat-conducting pipe connected to the heat-conducting plate; wherein, the end of the heat-conducting plate facing away from the heat-conducting pipe serves as the other end of the aforementioned heat-conducting component, and the end of the heat-conducting pipe facing away from the heat-conducting plate serves as one end of the heat-conducting component;

[0023] The housing is provided with a through hole through which the other end of the heat-conducting component passes, and the heat-conducting component seals the inner opening of the through hole through the heat-conducting plate.

[0024] In some embodiments, the heat sink is a cylindrical structure with openings at both ends, and the cooling fan is disposed inside the cylindrical structure; the heat sink is also provided with cooling fins.

[0025] In some embodiments, the heat dissipation mechanism further includes a temperature sensor and a controller. The temperature sensor is used to detect the temperature of the heat sink, and the controller is used to control the speed of the cooling fan according to the temperature of the heat sink. The higher the temperature of the heat sink, the higher the speed at which the controller controls the cooling fan to run.

[0026] In some embodiments, the heat dissipation mechanism has a first heat-conducting element group formed by two or more of the heat-conducting elements, the other end of each heat-conducting element in the first heat-conducting element group being used to contact different heat-generating elements;

[0027] And / or, the heat dissipation mechanism has a second heat-conducting element group formed by two or more of the heat-conducting elements, the other end of each heat-conducting element in the second heat-conducting element group being used to contact the same heat-generating element.

[0028] The present invention also provides an electric motor, which includes the motor housing structure described in any one of the above-described embodiments.

[0029] The motor housing structure and motor provided by this invention have the following beneficial effects:

[0030] 1. This invention transfers heat from the internal heating element of the motor to the heat sink on the outside of the motor housing by setting a heat-conducting component. Then, a cooling fan blows air onto the heat sink to dissipate heat. This can achieve cooling of the internal heating element of the motor, prevent damage to the heating element during long-term operation, and improve the service life of the internal heating element of the motor.

[0031] 2. The cooling fan speed is controlled by a temperature sensor to ensure low noise in low-temperature operation and maximum heat dissipation in high-temperature operation.

[0032] 3. The heat-conducting components installed at the bearing can provide a controllable preload force for the bearing. Attached Figure Description

[0033] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. The drawings described below are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0034] Figure 1 This is a structural diagram of an electric motor provided in one embodiment of the present invention;

[0035] Figure 2 This is a structural diagram of an electric motor from another perspective, provided in one embodiment of the present invention;

[0036] Figure 3This is a schematic diagram showing the situation where the second heat-conducting part is not in contact with the radial outer side of the bearing;

[0037] Figure 4 This is a schematic diagram showing that the second heat-conducting part has come into contact with the radial outer side of the bearing;

[0038] Figure 5 This is a schematic diagram illustrating how the heat-conducting components conduct heat to the rear bearing;

[0039] Figure 6 This is a schematic diagram illustrating how the heat-conducting components conduct heat to the stator;

[0040] Figure 7 It is a graph that reflects the speed of the cooling fan and the temperature of the heat sink.

[0041] The attached figures are labeled as follows:

[0042] 1. Housing; 2. Heat-conducting component; 3. Heat dissipation component; 4. Cooling fan; 5. Cam; 6. Elastic structure; 8. Nut seat; 9. Lead screw; 10. Rocker arm; 11. First transmission gear set; 12. Second transmission gear set; 13. Bearing; 14. Rear bearing; 15. Stator; 21. Heat-conducting pipe; 22. Heat-conducting plate; 31. Heat dissipation fin; 51. Cam axle; 61. Connecting block; 62. Elastic component; 71. First heat-conducting part; 72. Second heat-conducting part; 101. Through hole; 102. Support platform; 121. First transmission gear; 122. Second transmission gear; 131. First end; 132. Second end; 2a. First heat-conducting group; 2b. Second heat-conducting group. Detailed Implementation

[0043] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0044] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0045] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0046] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0047] See also Figure 1-6 As shown, according to an embodiment of the present invention, a motor housing structure is provided, which includes a housing 1 and a heat dissipation mechanism. The heat dissipation mechanism includes a heat-conducting element 2, a heat sink 3, and a cooling fan 4. The heat sink 3 is disposed on the outside of the housing 1. One end of the heat-conducting element 2 contacts the heat sink 3, and the other end of the heat-conducting element 2 extends into the housing 1. The other end of the heat-conducting element 2 is used to contact a heat-generating component on the motor inside the housing 1 to transfer heat from the heat-generating component to the heat sink 3. The cooling fan 4 is used to blow air onto the heat sink 3 for heat dissipation.

[0048] In the above example, the present invention transfers the heat from the internal heating element of the motor to the heat sink 3 on the outside of the housing 1 by setting the heat conduction element 2, and then blows air to the heat sink 3 to dissipate heat through the cooling fan 4. In this way, the internal heating element of the motor can be cooled down, preventing the heating element from being damaged during long-term operation and improving the service life of the internal heating element of the motor.

[0049] In some embodiments, one end of the aforementioned heat-conducting element 2 can be fixed to the heat sink 3 to achieve contact with the heat sink 3.

[0050] In some embodiments, the aforementioned heating element may include a first bearing for providing support to one end of the motor shaft, which may sometimes be referred to as a front bearing. And / or the heating element may include a second bearing for providing support to the other end of the motor shaft, which may sometimes be referred to as a rear bearing 14. And / or the heating element may include a stator 15.

[0051] In some implementations, such as Figure 1 As shown, the aforementioned motor housing structure has a first heat-conducting element group 2a formed by two or more heat-conducting elements 2. The other end of each heat-conducting element 2 in the first heat-conducting element group 2a is used to contact different heat-generating elements. For example, the other end of one heat-conducting element 2 in the first heat-conducting element group 2a can contact the aforementioned first bearing 13, the other end of another heat-conducting element 2 in the first heat-conducting element group 2a can contact the aforementioned second bearing, and the other end of another heat-conducting element 2 in the first heat-conducting element group 2a can contact the aforementioned stator 15.

[0052] In the above example, each heat-conducting component 2 in the first heat-conducting component group 2a transfers the heat from different heat-generating components to the heat dissipation component 3, so that the heat dissipation of each heat-generating component can be uniformly cooled through the same heat dissipation component 3, which facilitates unified management and control of the heat dissipation of each heat-generating component.

[0053] In some implementations, such as Figure 1 As shown, the aforementioned motor housing structure has a second heat-conducting element group 2b formed by two or more heat-conducting elements 2. The other end of each heat-conducting element 2 in the second heat-conducting element group 2b is used to contact the same heat-generating element. For example, the other end of each heat-conducting element 2 in the second heat-conducting element group 2 can all contact the stator 15 to improve the heat dissipation efficiency of the stator 15.

[0054] In some implementations, such as Figure 1 and 2 As shown, the aforementioned housing 1 may be provided with a through hole 101 extending into the interior, through which the other end of the aforementioned heat-conducting component 2 extends into the interior of the housing 1. When there are two or more heat-conducting components 2, the number of through holes 101 is equal to the number of heat-conducting components 2 and corresponds one-to-one. It should be noted that the number of through holes 101 can be designed to be any number depending on the actual situation.

[0055] In some embodiments, the aforementioned heat sink 3 can be a cylindrical structure with openings at both ends, and the aforementioned cooling fan 4 is disposed inside the cylindrical structure. By making the heat sink 3 a cylindrical structure with openings at both ends, heat dissipation is facilitated.

[0056] like Figure 2 As shown, the aforementioned heat sink 3 may also be provided with heat dissipation fins 31 to reduce heat accumulation and further improve the heat dissipation efficiency of the heat sink 3. The heat sink 3 may sometimes be referred to as a heat dissipation tower, etc.

[0057] The aforementioned heat sink 3 can be two or more; a larger number of heat sink 3 can improve heat dissipation efficiency. It should be noted that the number of heat sink 3 can be designed to be any number depending on the actual situation.

[0058] The number of cooling fans 4 mentioned above can be two or more; more cooling fans 4 can improve heat dissipation efficiency. It should be noted that the number of cooling fans 4 can be designed to be any number depending on the actual situation.

[0059] In some embodiments, the aforementioned heat dissipation mechanism may further include a temperature sensor and a controller. The temperature sensor is used to detect the temperature of the heat sink 3, and the controller is used to control the speed of the cooling fan 4 according to the temperature of the heat sink 3. Specifically, the higher the temperature of the heat sink 3, the higher the speed at which the controller controls the cooling fan 4 to run.

[0060] In the above example, the aforementioned controller can be a motor driver. The temperature of the heat sink 3 is transmitted to the controller via a temperature sensor. Once the temperature accumulates to a certain value, the controller will activate the cooling fan 4 to cool the heat sink 3. The higher the temperature of the heat sink 3, the more severe the heat generation of each heat-generating component. In this case, increasing the speed of the cooling fan 4 can accelerate the heat dissipation efficiency of the heat sink 3. Similarly, when the temperature of the heat sink 3 is low, it indicates that the heat generation of each heat-generating component is low. In this case, the speed of the cooling fan 4 can be reduced to lower operating noise.

[0061] The speed of the aforementioned cooling fan 4 is determined by a combination of data from the controller and the temperature sensor. In some embodiments, such as... Figure 7 As shown, when the temperature of heat sink 3 is between 0 and T1, the maximum speed of cooling fan 4 is A1; when the temperature of heat sink 3 is between T1 and T2, the maximum speed of cooling fan 4 is A2; when the temperature of heat sink 3 reaches or exceeds T3, cooling fan 4 reaches its maximum speed A3. A1 is less than A2, which is less than A3. T1 can be 25 degrees Celsius, T2 can be 50 degrees Celsius, and T3 can be 75 degrees Celsius. A1 can be 750 rpm, A2 can be 2000 rpm, and A3 can be 2500 rpm. When the speed of cooling fan 4 is lower than A1, the noise level is less than 20 dB.

[0062] In some implementations, such as Figure 2 As shown, the aforementioned heat dissipation mechanism can be located on the side of the housing 1 without changing the overall length of the motor. There can be two or more of the aforementioned heat dissipation mechanisms.

[0063] Example 1

[0064] like Figure 3-4As shown, when the heating element is a bearing 13, the bearing 13 has a first end 131 and a second end 132 opposite each other along the axial direction. A support platform 102 is provided on the housing 1 to provide support for the first end 131 of the bearing 13. The other end of the heat-conducting element 2 has a first heat-conducting portion 71, which is used to contact the second end 132 of the bearing 13. The aforementioned heat dissipation mechanism also includes a drive mechanism for pushing the first heat-conducting portion 71, causing the first heat-conducting portion 71 to apply an adjustable preload force to the second end 132.

[0065] In the above example, the preload on the bearing 13 can be adjusted to a suitable level by driving the first heat-conducting part 71 through the drive mechanism according to the actual working conditions, so as to improve the service life of the bearing 13.

[0066] The first heat-conducting part 71 has a dual function. On the one hand, it can transfer the heat on the bearing 13 to the heat sink 3 for heat dissipation. On the other hand, it can also cooperate with the drive mechanism to adjust the preload on the bearing 13. Thus, it has two functions in one piece, which reduces the cost.

[0067] To achieve the functions of the aforementioned drive mechanism, in some implementations, such as Figure 3-4 As shown, the aforementioned drive mechanism may include a power mechanism, a cam 5, and an elastic structure 6. One end of the cam 5 abuts against the elastic structure 6, and the other end of the elastic structure 6 abuts against one end of the first heat-conducting part 71 away from the bearing 13. The drive mechanism drives the cam 5 to rotate via the power mechanism, thereby causing the elastic structure 6 to push the first heat-conducting part 71.

[0068] In the above example, when the cam 5 rotates to its lowest point and contacts one end of the elastic structure 6, the cam 5 pushes the first heat-conducting part 71 through the elastic structure 6, minimizing the preload applied by the first heat-conducting part 71 to the second end 132 of the bearing. When the cam 5 rotates to its highest point and contacts one end of the elastic structure 6, the cam 5 pushes the first heat-conducting part 71 through the elastic structure 6, maximizing the preload applied by the first heat-conducting part 71 to the second end 132 of the bearing. When different parts of the cam 5 located between the highest and lowest points contact one end of the elastic structure 6, they can push the first heat-conducting part 71, allowing the first heat-conducting part 71 to apply an adjustable preload to the second end 132.

[0069] To achieve the function of driving the cam 5 to rotate using the aforementioned power mechanism, in some embodiments, such as... Figure 3-4As shown, the aforementioned power mechanism includes a rocker arm 10 and a first transmission gear set 11. The rocker arm 10 is rotatable and is connected to the input end of the first transmission gear set 11. The output end of the first transmission gear set 11 is connected to the cam's axle 51. When the rocker arm 10 rotates, it drives the cam's axle 51 to rotate via the first transmission gear set 11, thereby driving the cam 5 to rotate.

[0070] In the above example, the power mechanism cooperates with the first transmission gear set 11 through the rocker arm 10. When the rocker arm 10 rotates, it drives the cam axle 51 to rotate through the first transmission gear set 11. The cam axle 51 drives the cam 5 to rotate, thus realizing the function of the power mechanism driving the cam 5 to rotate.

[0071] To achieve the function of the aforementioned elastic structure 6, in some embodiments, such as Figure 3-4 As shown, the aforementioned elastic structure 6 may include a connecting block 61 and an elastic element 62, with the elastic element 62 disposed at one end of the connecting block 61. The end of the connecting block 61 facing away from the elastic element 62 serves as one end of the elastic structure 6 and abuts against the cam 5, while the end of the elastic element 62 facing away from the connecting block 61 serves as the other end of the elastic structure 6 and abuts against the first heat-conducting part 71.

[0072] In the above example, the connection block 61 and the elastic element 62 work together to achieve the function of the aforementioned elastic structure 6, so that the cam 5 can push the first heat-conducting part 71 through the combination of the connection block 61 and the elastic element 62.

[0073] The aforementioned elastic element 62 can be a spring or flexible plastic, etc. The aforementioned connecting block 61 can be plate-shaped to facilitate the abutment of the cam 5 against the connecting block 61. The aforementioned first heat-conducting part 71 can be plate-shaped. The first heat-conducting part 71 can be made of a metal material such as copper.

[0074] The aforementioned housing 1 may be provided with a guide and limiting groove, which is used to guide and limit the movement of the connecting block 61.

[0075] In some implementations, such as Figure 3-4 As shown, the other end of the aforementioned heat-conducting component 2 may also have a second heat-conducting part 72, which is used to contact the radial outer side of the bearing 13 through the second heat-conducting part 72. The driving mechanism is also used to drive the second heat-conducting part 72 to move, making the distance between the second heat-conducting part 72 and the radial outer side of the bearing 13 adjustable.

[0076] In the above example, the second heat-conducting part 72, together with the first heat-conducting part 71, can improve the heat conduction efficiency of the bearing 13 and enhance its heat dissipation effect. Furthermore, since the distance between the second heat-conducting part 72 and the radially outer side of the bearing 13 is adjustable, it facilitates the assembly and disassembly of the bearing 13. Specifically, when the bearing 13 is in operation, the second heat-conducting part 72 can be placed close to the radially outer side of the bearing 13 to transfer heat from the bearing 13 to the heat sink 3. When the bearing 13 is damaged and needs replacement, the second heat-conducting part 72 can be moved away from the bearing 13 to allow space for assembly and disassembly.

[0077] Furthermore, the aforementioned configuration enables the drive mechanism to perform dual functions. On one hand, it can drive the first heat-conducting part 71 to adjust the preload of the bearing 13; on the other hand, it can drive the second heat-conducting part 72 to adjust the distance between the second heat-conducting part 72 and the radially outer side of the bearing 13. This dual function of the drive mechanism offers the advantage of cost savings.

[0078] To achieve the function of driving the second heat-conducting part 72 to move using the aforementioned drive mechanism, in some embodiments, such as Figure 3-4 As shown, the drive mechanism includes a power mechanism, a cam 5, and an elastic structure 6, with the cam 5 abutting against one end of the elastic structure 6 and the other end of the elastic structure 6 abutting against one end of the bearing 13 of the first heat-conducting part 71; the drive mechanism drives the cam 5 to rotate via the power mechanism, thereby driving the elastic structure 6 to push the first heat-conducting part 71; and the power mechanism includes a rocker arm 10 and a first transmission gear set 11, the rocker arm 10 being rotatable, the rocker arm 10 being connected to the input end of the first transmission gear set 11, and the output end of the first transmission gear set 11 being connected to the wheel axle 51 of the cam; when the rocker arm 10 is used to rotate... When the first transmission gear set 11 drives the cam shaft 51 to rotate, thereby driving the cam 5 to rotate, the drive mechanism also includes a second transmission gear set 12, a limiting structure, a lead screw 9, and a nut seat 8 threaded onto the lead screw 9. The rocker arm 10 is connected to the input end of the second transmission gear set 12, the output end of the second transmission gear set 12 is connected to the lead screw 9, and the nut seat 8 is connected to the second heat-conducting part 72. When the rocker arm 10 is used to rotate, it drives the lead screw 9 to rotate through the second transmission gear set 12, causing the nut seat 8 to move along the lead screw 9 under the limiting structure, thereby driving the second heat-conducting part 72 to move.

[0079] In the above example, the rocker arm 10, the second transmission gear set 12, the limiting structure, the lead screw 9 and the nut seat 8 cooperate. When the rocker arm 10 rotates, it drives the lead screw 9 to rotate through the second transmission gear set 12. The lead screw 9 drives the nut seat 8 to move, so that the nut seat 8 moves along the lead screw 9 under the limitation of the limiting structure. The nut seat 8 drives the second heat-conducting part 72 to move together, thereby realizing the function of the drive mechanism driving the second heat-conducting part 72 to move.

[0080] The aforementioned joystick 10 can be a manual joystick.

[0081] In some embodiments, the aforementioned second transmission gear set 12 is detachable.

[0082] In the above example, after the rocker arm 10 pushes the second heat-conducting part 72 to a preset position where it abuts against the radial outer side of the bearing 13 via the second transmission gear set 12, the second transmission gear set 12 can be removed to disconnect the transmission connection between the rocker arm 10 and the lead screw 9. At this time, the rocker arm 10 is only connected to the cam 5 via the first transmission gear set 11 to adjust the preload of the bearing 13, thus preventing the second heat-conducting part 72 from obstructing the rocker arm 10's adjustment of the bearing 13's preload.

[0083] It should be noted that during installation, the dimensions can be designed so that when the rocker arm 10 rotates forward, it moves the second heat-conducting part 72 to a position where it just contacts the radial outer side of the bearing 13. At this point, one end of the arc segment of the outer contour of the cam 5 abuts against one end of the elastic structure 6. At this time, the second transmission gear set 12 can be removed. Then, when the rocker arm 10 continues to rotate forward, the cam 5 can apply a variable clamping force to the first heat-conducting part 71. Conversely, when the rocker arm 10 rotates in reverse, it moves the second heat-conducting part 72 to an extreme position far from the radial outer side of the bearing 13. At this point, the other end of the arc segment of the outer contour of the cam 5 abuts against one end of the elastic structure 6.

[0084] To achieve the aforementioned detachable function of the second transmission gear set 12, in some embodiments, such as Figure 3 As shown, the aforementioned second transmission gear set 12 may include a first transmission gear 121 and a second transmission gear 122. The first transmission gear 121 is fitted onto the rocker arm 10, and the second transmission gear 122 is fitted onto the lead screw 9. The first transmission gear 121 meshes with the second transmission gear 122. The first transmission gear 121 serves as the input end of the second transmission gear set 12, and the second transmission gear 122 serves as the output end of the second transmission gear set 12. The first transmission gear 121 and / or the second transmission gear 122 are detachable, allowing the second transmission gear set 12 to be disassembled.

[0085] In the above example, when the rocker arm 10 rotates, it drives the first transmission gear 121 to rotate, which in turn drives the second transmission gear 122 to rotate, and the second transmission gear 122 drives the lead screw 9 to rotate, thus realizing the function of the second transmission gear set 12. When either the first transmission gear 121 or the second transmission gear 122 is disassembled, the transmission connection between the rocker arm 10 and the lead screw 9 is disconnected.

[0086] In some embodiments, when the first transmission gear 121 is detachable, in order to realize the function of the first transmission gear 121 being detachable, the first transmission gear 121 can be a two-half structure. The two halves of the first transmission gear 121 are detachably fixed to the rocker arm 10 by splicing, thereby realizing the function of the first transmission gear 121 being detachable.

[0087] In some embodiments, when the second transmission gear 122 is detachable, in order to realize the detachable function of the second transmission gear 122, the second transmission gear 122 is a two-half structure, and the two halves of the second transmission gear 122 are detachably fixed on the lead screw 9 by splicing, thereby realizing the detachable function of the second transmission gear 122.

[0088] To achieve the function of the aforementioned limiting structure, in some embodiments, such as Figure 3 As shown, the aforementioned housing 1 is provided with a through hole 101 through which the other end of the heat-conducting component 2 passes. The aforementioned nut seat 8 is sleeved in the through hole 101 and slides in fit with the through hole 101. The hole wall of the through hole 101 forms the aforementioned limiting structure to limit the nut seat 8, so that the nut seat 8 can move along the lead screw 9 under the drive of the lead screw 9.

[0089] The aforementioned through hole 101 can be a non-circular hole, and the nut seat 8 has an external shape consistent with the through hole 101 so that the through hole 101 can prevent the nut seat 8 from rotating.

[0090] In some implementations, such as Figure 3 As shown, the aforementioned nut seat 8 is located within the through hole 101 and seals the through hole 101, thus providing housing protection for the internal components of the motor at the through hole 101. The nut seat 8 mates with the wall of the through hole 101 to form a first groove structure, with the nut seat 8 forming the bottom surface of the first groove structure.

[0091] In some embodiments, the aforementioned heat-conducting element 2 is configured to extend and retract along the movement direction of the second heat-conducting part 72, so as to avoid interference of the heat-conducting element 2 with the movement of the second heat-conducting part 72. Preferably, the heat-conducting element 2 is a heat-conducting telescopic tube that can extend and retract along the running direction of the second heat-conducting part 72. The specific extension and retraction method of the heat-conducting telescopic tube is in the prior art and will not be described in detail here.

[0092] The aforementioned thermally conductive expansion tubes can be made of metal materials such as copper. There can be two or more thermally conductive expansion tubes. It should be noted that the number of thermally conductive expansion tubes can be designed to be any number depending on the actual situation.

[0093] In this first embodiment, the first heat-conducting part 71 and the second heat-conducting part 72 are fixed relative to each other. Preferably, the first heat-conducting part 71 and the second heat-conducting part 72 can be integrally formed. Both the first heat-conducting part 71 and the second heat-conducting part 72 can be plate-shaped, and both can be L-shaped. When the bearing 13 is installed, the first heat-conducting part 71 can act as a limiter to ensure that the bearing 13 is in an interference fit position with the bearing 13 chamber. After the bearing 13 is installed, the rocker arm 10 is rotated, and the rocker arm 10 drives the second transmission gear set 12 to move, pushing the second heat-conducting part 72 forward to a position that is in contact with the radial outer side of the bearing 13; at the same time, the rocker arm 10 drives the first transmission gear set 11 to move, driving the cam 5 to rotate, applying pressure to the elastic structure 6, so that the first heat-conducting part 71 provides a preload force to the bearing 13. After the second heat-conducting part 72 and the bearing 13 are installed, the second transmission gear set 12 can be removed. At this time, shaking the rocker arm 10 will only drive the cam 5 to rotate, adjusting the preload of the bearing 13. After the first heat-conducting part 71, the second heat-conducting part 72, and the bearing 13 are all installed, the heat-conducting component 2 can be installed. The overall structure after installation is as follows: Figure 4 As shown. Both the first heat-conducting part 71 and the second heat-conducting part 72 can be coated with silicone grease for heat conduction.

[0094] It should be noted that the bearing 13 in this embodiment can be the aforementioned first bearing, i.e., the front bearing.

[0095] Example 2

[0096] like Figure 5-6 As shown, when the aforementioned heating element is a first heating element, such as stator 15 or rear bearing 14, the aforementioned heat-conducting element 2 may include a heat-conducting pipe 21 and a heat-conducting plate 22, with one end of the heat-conducting pipe 21 connected to the heat-conducting plate 22. The end of the heat-conducting plate 22 facing away from the heat-conducting pipe 21 serves as the other end of the aforementioned heat-conducting element 2, extending into the housing 1 and contacting the heating element. The end of the heat-conducting pipe 21 facing away from the heat-conducting plate 22 serves as one end of the aforementioned heat-conducting element 2 and contacts the heat sink 3. The heat-conducting plate 22 may be made of a metal material, such as copper. The heat-conducting pipe 21 may be a metal pipe, such as a copper pipe.

[0097] The heat-conducting plate 22 described above may have a shape that matches the shape of the heating element in order to increase the contact area between the heat-conducting plate 22 and the heating element.

[0098] The number of heat pipes 21 can be two or more, and they are arranged alternately on the heat-conducting plate 22. By using a larger number of heat pipes 21, the heat conduction efficiency can be improved. It should be noted that the number of heat pipes 21 can be designed to be arbitrary, depending on the actual situation.

[0099] The housing 1 has a through hole 101 through which the other end of the heat-conducting component 2 passes. The heat-conducting component 2 seals the inner opening of the through hole 101 through a heat-conducting plate 22 to provide housing protection for the internal components of the motor at the through hole 101.

[0100] The aforementioned heat-conducting plate 22 mates with the wall of the via 101 to form a second groove structure, with the heat-conducting plate 22 forming the bottom surface of the second groove structure. Silicone grease can be applied to the surface of the heat-conducting plate 22 for heat conduction.

[0101] In some embodiments, the present invention also provides an electric motor, which may include the motor housing structure of any of the above.

[0102] The aforementioned motors can be servo motors, etc.

[0103] Current servo motors typically use natural cooling. After the overall length of the machine is shortened through design optimization, the bearing 13 and stator 15 accumulate a lot of heat and reach high temperatures. The solution of this invention can precisely cool the stator 15 and the front and rear bearings. At the same time, the speed of the cooling fan 4 can change linearly according to the real-time temperature of the heat sink 3, effectively reducing operating noise.

[0104] like Figure 1 As shown, through holes 101 can be made on the housing 1 at positions opposite to the heat-generating components such as the front bearing, rear bearing 14, and stator 15. The other end of the heat-conducting component 2 passes through the through hole 101 and contacts the heat-generating component. Each heat-generating component can have one or more heat-conducting components 2.

[0105] The technical solution of the present invention solves the problem of excessive temperature of heat-generating components inside the existing motor, such as bearing 13 and stator 15, and can provide controllable preload force to bearing 13.

[0106] The technical solution of the present invention has the following beneficial effects: 1. A through hole 101 is provided on the housing 1 for the heat-conducting component 2 to pass through. The heat-conducting plate 22 at the end of the heat-conducting component 2 cooperates with the hole wall of the through hole 101 to form a groove structure. The heat-conducting component 2 contacts the heat-generating component through the heat-conducting plate 22. The heat-conducting plate 22 can be made of copper material, and the heat-conducting component 2 can be a copper tube, effectively dissipating the heat from the heat-generating component. 2. A heat sink 3 and a cooling fan 4 are added for cooling. The speed of the cooling fan 4 is controlled by a temperature sensor to ensure low noise in low-temperature working conditions and provide maximum heat dissipation capacity in high-temperature conditions. 3. The heat-conducting component 2 provided at the bearing 13 can provide a controllable preload for the bearing 13.

[0107] It will be readily understood by those skilled in the art that, without conflict, the advantageous technical features of the above-mentioned methods can be freely combined and superimposed.

[0108] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention. The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the protection scope of the present invention.

Claims

1. A motor housing structure, characterized in that: It includes a housing (1) and a heat dissipation mechanism, wherein the heat dissipation mechanism includes a heat-conducting component (2), a heat dissipation component (3) and a cooling fan (4); The heat sink (3) is disposed on the outside of the housing (1); one end of the heat conductor (2) is in contact with the heat sink (3), and the other end of the heat conductor (2) extends into the housing (1); wherein, the other end of the heat conductor (2) is used to contact the heating element on the motor inside the housing (1) to transfer the heat of the heating element to the heat sink (3); The cooling fan (4) is used to blow air to cool the heat sink (3).

2. The motor housing structure according to claim 1, characterized in that: When the heating element is a bearing (13), the bearing (13) has a first end (131) and a second end (132) opposite each other along the axial direction; the housing (1) is provided with a support platform (102), which is used to provide support for the first end (131) of the bearing (13); the other end of the heat-conducting element (2) has a first heat-conducting part (71), which is used to contact the second end (132) of the bearing (13) through the first heat-conducting part (71); The heat dissipation mechanism further includes a driving mechanism, which is used to push the first heat-conducting part (71) so that the first heat-conducting part (71) applies an adjustable preload force to the second end (132).

3. The motor housing structure according to claim 2, characterized in that: The driving mechanism includes a power mechanism, a cam (5), and an elastic structure (6); the cam (5) abuts against one end of the elastic structure (6), and the other end of the elastic structure (6) abuts against the end of the first heat-conducting part (71) away from the bearing (13); wherein, the driving mechanism drives the cam (5) to rotate through the power mechanism, so as to drive the elastic structure (6) to push the first heat-conducting part (71).

4. The motor housing structure according to claim 3, characterized in that: The power mechanism includes a rocker arm (10) and a first transmission gear set (11). The rocker arm (10) is rotatable and is connected to the input end of the first transmission gear set (11). The output end of the first transmission gear set (11) is connected to the wheel axle (51) of the cam. When the rocker arm (10) rotates, it drives the wheel axle (51) of the cam to rotate through the first transmission gear set (11), thereby driving the cam (5) to rotate.

5. The motor housing structure according to claim 3 or 4, characterized in that: The elastic structure (6) includes a connecting block (61) and an elastic element (62). The elastic element (62) is disposed at one end of the connecting block (61). The end of the connecting block (61) facing away from the elastic element (62) serves as one end of the elastic structure (6), and the end of the elastic element (62) facing away from the connecting block (61) serves as the other end of the elastic structure (6).

6. The motor housing structure according to any one of claims 2-4, characterized in that: The other end of the heat-conducting component (2) also has a second heat-conducting part (72), and the other end of the heat-conducting component (2) is used to contact the radial outer side of the bearing (13) through the second heat-conducting part (72); The driving mechanism is also used to drive the second heat-conducting part (72) to move, so that the distance between the second heat-conducting part (72) and the radial outer side of the bearing (13) is adjustable.

7. The motor housing structure according to claim 6, characterized in that: When the driving mechanism includes a power mechanism, a cam (5) and an elastic structure (6), and one end of the cam (5) abuts against the elastic structure (6), and the other end of the elastic structure (6) abuts against the end of the first heat-conducting part (71) away from the bearing (13); the driving mechanism drives the cam (5) to rotate through the power mechanism, so as to drive the elastic structure (6) to push the first heat-conducting part (71); and the power mechanism includes a rocker arm (10) and a first transmission gear set (11), the rocker arm (10) is rotatable, the rocker arm (10) is connected to the input end of the first transmission gear set (11), and the output end of the first transmission gear set (11) is connected to the wheel axle (51) of the cam; when the rocker arm (10) is used to rotate, it drives the wheel axle (51) of the cam to rotate through the first transmission gear set (11), so as to drive the cam (5) to rotate. The driving mechanism further includes a second transmission gear set (12), a limiting structure, a lead screw (9), and a nut seat (8) threaded onto the lead screw (9). The rocker arm (10) is connected to the input end of the second transmission gear set (12), the output end of the second transmission gear set (12) is connected to the lead screw (9), and the nut seat (8) is connected to the second heat-conducting part (72). When the rocker arm (10) rotates, it drives the lead screw (9) to rotate through the second transmission gear set (12), so that the nut seat (8) moves along the lead screw (9) under the limiting of the limiting structure, thereby driving the second heat-conducting part (72) to move.

8. The motor housing structure according to claim 7, characterized in that: The second transmission gear set (12) is detachable.

9. The motor housing structure according to claim 8, characterized in that: The second transmission gear set (12) includes a first transmission gear (121) for being fitted onto the rocker arm (10) and a second transmission gear (122) for being fitted onto the lead screw (9). The first transmission gear (121) meshes with the second transmission gear (122). The first transmission gear (121) serves as the input end of the second transmission gear set (12), and the second transmission gear (122) serves as the output end of the second transmission gear set (12). The first transmission gear (121) and / or the second transmission gear (122) are detachable, so that the second transmission gear set (12) is detachable.

10. The motor housing structure according to claim 8, characterized in that: The first transmission gear (121) is a two-half structure, and the two halves of the first transmission gear (121) are detachably mounted on the rocker arm (10) by splicing; and / or, the second transmission gear (122) is a two-half structure, and the two halves of the second transmission gear (122) are detachably mounted on the lead screw (9) by splicing.

11. The motor housing structure according to any one of claims 7-10, characterized in that: The housing (1) is provided with a through hole (101) through which the other end of the heat-conducting component (2) passes. The nut seat (8) is sleeved in the through hole (101) and slides in cooperation with the through hole (101). The wall of the through hole (101) forms the limiting structure.

12. The motor housing structure according to claim 6, characterized in that: The heat-conducting element (2) is configured to extend and retract along the direction of movement of the second heat-conducting part (72).

13. The motor housing structure according to claim 1, characterized in that: The heat-conducting component (2) includes a heat-conducting pipe (21) and a heat-conducting plate (22), one end of the heat-conducting pipe (21) being connected to the heat-conducting plate (22); wherein, the end of the heat-conducting plate (22) facing away from the heat-conducting pipe (21) serves as the other end of the aforementioned heat-conducting component (2), and the end of the heat-conducting pipe (21) facing away from the heat-conducting plate (22) serves as one end of the heat-conducting component (2); The housing (1) is provided with a through hole (101) through which the other end of the heat-conducting component (2) passes. The heat-conducting component (2) seals the inner opening of the through hole (101) through the heat-conducting plate (22).

14. The motor housing structure according to any one of claims 1-4, 7-10, and 12-13, characterized in that: The heat sink (3) has a cylindrical structure with openings at both ends, and the cooling fan (4) is located inside the cylindrical structure; the heat sink (3) is also provided with heat dissipation ribs (31).

15. The motor housing structure according to any one of claims 1-4, 7-10, and 12-13, characterized in that: The heat dissipation mechanism also includes a temperature sensor and a controller. The temperature sensor is used to detect the temperature of the heat sink (3), and the controller is used to control the speed of the cooling fan (4) according to the temperature of the heat sink (3). The higher the temperature of the heat sink (3), the higher the speed of the cooling fan (4) is controlled by the controller.

16. The motor housing structure according to any one of claims 1-4, 7-10, and 12-13, characterized in that: The heat dissipation mechanism has a first heat-conducting element group (2a) formed by two or more heat-conducting elements (2), and the other end of each heat-conducting element (2) in the first heat-conducting element group (2a) is used to contact different heat-generating elements; And / or, the heat dissipation mechanism has a second heat-conducting element group (2b) formed by two or more of the heat-conducting elements (2), the other end of each heat-conducting element (2) in the second heat-conducting element group (2b) being used to contact the same heat-generating element.

17. An electric motor, characterized in that: The motor housing structure includes any one of claims 1-16.

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