High-strength motor shell with enhanced heat dissipation function

Abstract

The utility model provides a kind of high-strength motor casing with enhanced heat dissipation function, comprising: shell, rear end fixed mounting is equipped with rear cover in shell, shell inside front and rear side are fixedly installed with reinforcing rib. This kind of high-strength motor casing with enhanced heat dissipation function, by being provided with heat dissipation fin, heat dissipation hole, heat dissipation fan, reinforcing rib, connecting rib and shim plate and other structures, heat dissipation fin and heat dissipation hole form natural convection passage, expand heat exchange area and accelerate heat conduction, heat dissipation fan starts forced convection at high load, constructs composite heat dissipation system;Annular reinforcing rib disperses radial load along circumference, connecting rib is arranged in radial or grid shape to enhance torsional stiffness, shim plate is embedded between reinforcing rib, both as supporting surface dispersion load, ensure coaxial degree, also assist heat export, so that shell has excellent heat dissipation efficiency and mechanical strength on the basis of lightweight, can effectively cope with high power density, strong vibration and other severe working conditions, provide all-round guarantee for motor stable operation.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, and more specifically, to a high-strength motor housing with enhanced heat dissipation function. Background Technology

[0002] An electric motor is a device that converts electrical energy into mechanical energy. It drives a rotor to rotate and output power through the principle of electromagnetic induction, and is widely used in industry, transportation, and home appliances. To increase the lifespan of an electric motor, it is usually protected by a housing. This ensures the reliability of the mechanical structure and, through heat dissipation and protection, ensures stable operation in complex environments. With the rapid development of industries such as industrial automation and new energy vehicles, the power density of electric motors is constantly increasing, placing higher demands on the heat dissipation performance and mechanical strength of the motor housing.

[0003] However, the existing motor housing has the following problems during use:

[0004] Traditional motor housings rely mainly on natural convection for heat dissipation, which is inefficient and can easily lead to performance degradation or even failure due to overheating. At the same time, when faced with high speed and high torque conditions, insufficient housing strength may cause problems such as deformation and increased vibration, affecting the stability and service life of the motor, making it difficult to meet the requirements of lightweight and high reliability.

[0005] This invention enhances heat dissipation efficiency through structures such as heat dissipation fins, heat dissipation holes, and heat dissipation fans, and improves the strength and stability of the shell by means of reinforcing ribs, connecting ribs, and pads, which can effectively control the motor temperature and enhance the load-bearing capacity. Utility Model Content

[0006] The present invention aims to solve the technical problems mentioned in the background art and provide a high-strength motor housing with enhanced heat dissipation function.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a high-strength motor housing with enhanced heat dissipation function, comprising: a housing, a rear cover fixedly installed at the rear end of the housing, reinforcing ribs fixedly installed on both the front and rear sides inside the housing, a fixing end one fixedly installed around both the front and rear sides of the outer end of the housing, and a fixing end two fixedly installed around the outer end of the rear cover, wherein the fixing end one and the fixing end two on the rear side are matched and fixedly connected by bolts.

[0008] A further preferred embodiment: the shell has an inner cavity, which is fixedly connected to the reinforcing rib.

[0009] A further preferred embodiment: connecting blocks are fixedly installed on both the left and right sides of the bottom of the outer surface of the shell, and a base plate is fixedly installed on the bottom of the connecting blocks.

[0010] A further preferred embodiment: a plurality of heat dissipation fins are fixedly installed around the surface of the housing, and heat dissipation holes are provided inside and on the surface of the housing, with the heat dissipation holes being located between the heat dissipation fins.

[0011] A further preferred embodiment: the first fixed end has a first connecting hole on its front side, the second fixed end has a second connecting hole on its front side, and the first connecting hole and the second connecting hole are fixedly connected by bolts.

[0012] A further preferred embodiment: a cooling fan is fixedly installed in the middle of the rear cover.

[0013] A further preferred embodiment: the reinforcing rib is arranged in a ring shape, and a connecting end is fixedly installed around the outer surface of the reinforcing rib, with the outer end of the connecting end being fixedly connected to the inside of the cavity.

[0014] A further preferred embodiment: connecting ribs are fixedly connected between the connecting ends on the outer surface of the reinforcing ribs.

[0015] A further preferred embodiment: a pad is fixedly installed around the reinforcing ribs, the upper and lower ends of the pad are fixedly connected to the surface of the connecting ribs respectively, and the outer surface of the pad is movably connected to the interior of the cavity.

[0016] Beneficial effects:

[0017] 1. By incorporating heat dissipation fins, ventilation holes, and a cooling fan, the heat dissipation fins cover the outer surface of the casing in a dense array, significantly expanding the heat exchange area. Natural air convection rapidly dissipates heat from the casing surface into the environment. The ventilation holes penetrate the casing and are distributed between the fins, forming a continuous heat conduction channel. This allows heat generated by the internal heat source to be directly conducted to the outside through the casing wall, while simultaneously guiding airflow to form a "heat dissipation from the inside" convection cycle, enhancing natural heat dissipation efficiency. The cooling fan, through an active airflow mechanism, forces external cool air into the internal cavity under high motor load, allowing direct contact and heat exchange with the heat-generating components. The heated airflow is then discharged through the ventilation holes and flows through the fins to further release heat, forming a "cooling by intake - heat dissipation by exhaust" forced convection path. The combination of these three elements gives the casing both the basic stability of passive heat dissipation and the dynamic adaptability of active heat dissipation. It can automatically adjust the heat dissipation intensity according to the motor load, ensuring that the internal cavity temperature is maintained within a reasonable range, avoiding performance degradation or malfunctions due to overheating.

[0018] 2. By incorporating reinforcing ribs and connecting ribs, the annular reinforcing ribs are evenly distributed along the circumference of the shell, acting like a "rigid ring" tightly wrapping the inner cavity. This effectively suppresses the radial expansion or contraction of the shell caused by electromagnetic force and centrifugal force during motor operation, distributing the load evenly throughout the circumference and preventing deformation or cracking caused by local stress concentration. The connecting ribs connect adjacent annular reinforcing ribs, forming a three-dimensional support network. This not only significantly improves the torsional stiffness of the shell and suppresses relative circumferential displacement, but also converts axial loads into radial compressive stresses that are transmitted through the annular ribs, enhancing the overall structure's ability to withstand complex loads. With the combined effect of both, the weight is reduced while significantly improving vibration and impact resistance, effectively absorbing vibration energy generated by motor start-up or external impacts, and reducing the risk of resonance.

[0019] 3. By setting up a pad, which is tightly embedded between the reinforcing ribs, with its upper and lower ends rigidly fitting with the connecting ribs and its outer surface precisely contacting the inner cavity wall, an integrated force transmission path of "rib-plate-shell" is formed. At the mechanical level, it effectively disperses the radial and axial loads transmitted by the outer ring of the bearing, avoids deformation of the shell due to force concentration, and reduces eccentric vibration during motor operation. At the thermal conduction level, the pad acts as a "heat conduction hub", quickly dissipating the heat generated by bearing friction and transferring it to the heat dissipation fins on the outer wall of the shell through the connecting ribs and reinforcing ribs, shortening the heat conduction path and improving heat dissipation efficiency.

[0020] 4. In summary, this high-strength motor housing with enhanced heat dissipation function incorporates structures such as heat dissipation fins, heat dissipation holes, a cooling fan, reinforcing ribs, connecting ribs, and pads. The external heat dissipation fins and heat dissipation holes form a natural convection channel, expanding the heat exchange area and accelerating heat conduction. The cooling fan activates forced convection under high loads, constructing a composite heat dissipation system. The annular reinforcing ribs distribute radial loads circumferentially, while the connecting ribs enhance torsional stiffness with a radial or grid-like layout. The pads are embedded between the reinforcing ribs, serving as support surfaces to distribute loads, ensure coaxiality, and assist in heat dissipation. The various structures work together to give the housing excellent heat dissipation efficiency and mechanical strength while maintaining a lightweight design. It can effectively cope with harsh operating conditions such as high power density and strong vibration, providing comprehensive protection for the stable operation of the motor. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0022] Figure 2 This is a schematic diagram of the shell structure of this utility model.

[0023] Figure 3 This is a schematic diagram of the cooling fan structure of this utility model.

[0024] Figure 4 This is a schematic diagram of the reinforcing rib structure of this utility model.

[0025] Figures 1-4 In the middle: 1. Shell; 101. Inner cavity; 102. Connecting block; 103. Base plate; 104. Heat dissipation fins; 105. Heat dissipation holes; 106. Fixed end one; 107. Connecting hole one; 2. Rear cover; 201. Fixed end two; 202. Connecting hole two; 203. Heat dissipation fan; 3. Reinforcing rib; 301. Connecting end; 302. Connecting rib; 303. Pad plate. Detailed Implementation

[0026] The following will refer to the appendix in the embodiments of this utility model. Figures 1-4 The technical solutions in the embodiments of this utility model will be clearly and completely described.

[0027] Please see Figures 1-4In this embodiment of the utility model, a high-strength motor housing with enhanced heat dissipation function includes: a housing 1, a rear cover 2 fixedly installed at the rear end of the housing 1, reinforcing ribs 3 fixedly installed on both the front and rear sides of the interior of the housing 1, a fixing end 106 fixedly installed around the front and rear sides of the outer end of the housing 1, a fixing end 201 fixedly installed around the outer end of the rear cover 2, the rear fixing end 106 and the fixing end 201 being matched and fixedly connected by bolts, an inner cavity 101 being opened inside the housing 1, the inner cavity 101 being fixedly connected to the reinforcing ribs 3, and connecting blocks 102 fixedly installed on both the left and right sides of the bottom of the outer surface of the housing 1. A base plate 103 is fixedly installed at the bottom of the housing 1. Several heat dissipation fins 104 are fixedly installed around the surface of the housing 1. Heat dissipation holes 105 are opened inside and on the surface of the housing 1, and the heat dissipation holes 105 are opened between the heat dissipation fins 104. A first connection hole 107 is opened on the front of the first fixed end 106, and a second connection hole 202 is opened on the front of the second fixed end 201. The first connection hole 107 and the second connection hole 202 are fixedly connected by bolts. A cooling fan 203 is fixedly installed in the middle of the rear cover 2. The connecting block 102 at the bottom of the housing 1 fixes the housing to the base plate 103 by bolts. The base plate 103 is used to install the equipment. On the frame or vehicle chassis, stable mechanical support is provided. The vibration and torque of the motor during operation are transmitted to the base plate 103 through the connecting block 102, and then distributed to the mounting base by the base plate 103, reducing the direct force on the shell. The fixed end 106 at the rear end of the shell 1 and the fixed end 201 of the rear cover 2 are fixedly connected by bolts through the connecting hole 107 and the connecting hole 202, providing initial protection for the internal motor. The heat dissipation fins 104 on the outer surface of the shell 1 increase the surface area and remove heat through natural air convection. The heat dissipation holes 105 (opened between the fins) run through the inside and outside of the shell, forming an "internal heat dissipation" channel: inner cavity 1 The heat generated by the motor inside the housing 1 is conducted through the inner wall of the housing 1 to the heat dissipation fins 104 on the outer wall. The heat dissipation holes 105 between the fins allow air to flow on the surface of the housing and form convection with the hot air in the inner cavity 101 through the holes, which accelerates the dissipation of heat. The heat dissipation fan 203 in the middle of the rear cover 2 rotates after being powered on, generating airflow direction, which draws the cold air from the outside inward into the inner cavity 101, where it comes into direct contact with the motor and absorbs heat. The heated air is discharged through the heat dissipation holes 105 on the surface of the housing 1 and further releases heat when it flows through the heat dissipation fins 104, forming a cycle of "drawing in cold air → cooling the interior → discharging hot air".

[0028] In this embodiment of the utility model, the reinforcing rib 3 is arranged in a ring shape, and a connecting end 301 is fixedly installed around the outer surface of the reinforcing rib 3. The outer end of the connecting end 301 is fixedly connected to the inside of the inner cavity 101. A connecting rib 302 is fixedly connected between the connecting ends 301 on the outer surface of the reinforcing rib 3. A pad 303 is fixedly installed around the reinforcing rib 3. The upper and lower ends of the pad 303 are fixedly connected to the surface of the connecting rib 302, respectively. The outer surface of the pad 303 is movably connected to the inside of the inner cavity 101. The reinforcing rib 3 is arranged in a ring shape (distributed along the circumference of the shell), similar to a "reinforcing ring" fitted inside the shell, which can effectively suppress the radial deformation of the shell (such as the expansion or contraction of the shell caused by the electromagnetic force when the motor is running). When the motor is running, the radial loads such as the rotor centrifugal force and the stator magnetic pull force are transmitted to the connecting end 301 through the inner cavity 101. Then, the rigid structure of the ring reinforcing rib 3 distributes the load to the entire circumference of the shell, avoiding local stress concentration. The connecting end 301 is the connection interface between the reinforcing rib 3 and the inner cavity 101, and is integrated with the inner cavity 101 by welding or casting. The inner cavity is fixed, forming a rigid whole of "reinforcing rib-shell". The connecting rib 302 is fixed between the connecting ends 301 of adjacent annular reinforcing ribs, connecting adjacent annular ribs, improving the torsional stiffness of the shell and suppressing circumferential relative displacement. When the motor is subjected to axial load (such as gear meshing reaction force), the connecting rib 302 can convert the axial force into radial compressive stress, which is dispersed through the annular rib. At the same time, the connecting rib 302 can also serve as a heat conduction path, allowing the heat of the inner cavity 101 to be quickly discharged through the reinforcing rib 3 → connecting rib 302 → heat dissipation fins 104 on the outer wall of the shell, shortening the heat conduction distance. The pad 303 is fixed between the reinforcing ribs 3, and its upper and lower ends are in contact with the surface of the connecting rib 302, forming a rigid "rib-plate" connection, transferring the radial support force of the connecting rib 302 to the pad 303, avoiding displacement or deformation caused by the pad being subjected to independent force. The surface of the pad 303 is in contact with the inside of the inner cavity 101, ensuring that the load is directly conducted to the shell body through the pad. At the same time, the pad 303 can also assist in the outward conduction of heat, increasing the heat dissipation efficiency.

[0029] Working principle: The annular reinforcing rib 3 is welded or cast to the inner wall of the inner cavity 101 through the connecting end 301, forming a "rigid ring" inside the shell. The connecting rib 302 is welded between the connecting ends 301 of adjacent annular ribs, forming a "ring + radial" three-dimensional support network. The pad 303 is embedded between the reinforcing ribs 3, and its upper and lower ends are welded and fixed to the connecting rib 302. Its outer surface is in contact with the inner wall of the inner cavity 101. The heat dissipation fins 104 are fixed to the outer surface of the shell 1. The heat dissipation holes 105 penetrate between the fins. The heat dissipation fan 203 of the rear cover 2 is pre-assembled. The connecting hole 202 of the second fixed end 201 is aligned with the connecting hole 107 of the first fixed end 106 at the rear end of the shell 1. The closed cavity is formed by pre-tightening the bolts. The base plate 103 is fixed to the connecting block 102 by bolts, completing the ground installation of the shell. When the motor starts, the centrifugal force of the rotor is transmitted to the pad 303 → connecting rib 302 through the outer ring of the bearing. → Annular reinforcing rib 3 → Outer wall of the housing. The circumferential stiffness of the annular rib evenly distributes the load, avoiding local overload of the inner cavity wall. When the motor is subjected to external impact (such as vehicle bumps), the base plate 103 transmits the impact force to the reinforcing rib 3 at the bottom of the housing through the connecting block 102. The triangular connecting rib 302 structure converts the impact force into compressive stress, and the energy is offset by the rigid support of the annular rib. The heat generated by the motor during operation is transferred to the reinforcing rib 3 → connecting rib 302 → pad 303 → inner cavity 101 wall → heat dissipation fins 104 through air convection. The cooling fan 203 rotates to generate negative pressure. External cold air is drawn in from the rear cover 2 and absorbs heat when it flows through the bearing area. The cold air enters the inner cavity 101 and directly convects with the hot air for heat exchange. The heated air carries heat and is discharged through the heat dissipation hole 105. When it flows through the heat dissipation fins 104, the fins further dissipate heat through radiation and convection. Finally, the hot air is discharged to the environment by the fan.

Claims

1. A high-strength motor housing with enhanced heat dissipation function, comprising: A housing (1) is provided, with a rear cover (2) fixedly installed at the rear end of the housing (1). Reinforcing ribs (3) are fixedly installed on both the front and rear sides of the interior of the housing (1). The housing (1) is characterized by having a first fixing end (106) fixedly installed around its outer end on both the front and rear sides, and a second fixing end (201) fixedly installed around its outer end on the rear cover (2). The first fixing end (106) and the second fixing end (201) are matched and connected by bolts. An inner cavity (101) is provided inside the housing (1), and the inner cavity (101) is fixedly connected to the reinforcing ribs (3). Next, the reinforcing rib (3) is arranged in a ring shape. A connecting end (301) is fixedly installed around the outer surface of the reinforcing rib (3). The outer end of the connecting end (301) is fixedly connected to the inside of the inner cavity (101). A connecting rib (302) is fixedly connected between the connecting ends (301) on the outer surface of the reinforcing rib (3). A pad (303) is fixedly installed around the reinforcing rib (3). The upper and lower ends of the pad (303) are fixedly connected to the surface of the connecting rib (302) respectively. The outer surface of the pad (303) is movably connected to the inside of the inner cavity (101).

2. A high-strength motor housing with enhanced heat dissipation function according to claim 1, characterized in that: Connecting blocks (102) are fixedly installed on both the left and right sides of the bottom of the outer surface of the shell (1), and a base plate (103) is fixedly installed on the bottom of the connecting blocks (102).

3. A high-strength motor housing with enhanced heat dissipation function according to claim 1, characterized in that: The housing (1) has several heat dissipation fins (104) fixedly installed around its surface. Heat dissipation holes (105) are provided inside and on the surface of the housing (1), and the heat dissipation holes (105) are located between the heat dissipation fins (104).

4. A high-strength motor housing with enhanced heat dissipation function according to claim 1, characterized in that: The first fixed end (106) has a first connecting hole (107) on its front side, and the second fixed end (201) has a second connecting hole (202) on its front side. The first connecting hole (107) and the second connecting hole (202) are fixedly connected by bolts.

5. A high-strength motor housing with enhanced heat dissipation function according to claim 1, characterized in that: A cooling fan (203) is fixedly installed in the middle of the rear cover (2).

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