A hole type clutch facilitating heat dissipation

Abstract

This utility model discloses a perforated clutch that facilitates heat dissipation, relating to the field of magnetic powder clutch technology. It includes a stator, rotor, rotor connecting shaft, coil, and rotor housing, as well as a connecting ring, a heat dissipation cover, and multiple heat dissipation holes. The connecting ring is disposed between the stator and the rotor housing, and the connecting ring and the rotor housing are fixedly connected by an arc-shaped plate. The arc-shaped plate is distributed in a circumferential array around the center lines of the stator and rotor housing. This utility model has a reasonable design structure. By setting heat dissipation holes evenly distributed around the center line and gradually diffusing outwards on the heat dissipation cover, and connecting them to the heat dissipation cavity formed between the heat dissipation cover and the rotor housing, it cleverly constitutes a forced air cooling structure. When the clutch rotor rotates at high speed, it naturally drives air to flow at high speed within the heat dissipation cavity, forming a "pumping" effect. Cold air is drawn in from one side of the heat dissipation hole, flows over the heated rotor housing and stator surfaces, and then becomes hot air, which is discharged from the other side of the heat dissipation hole, achieving active and efficient circulating heat dissipation.

Description

Technical Field

[0001] This utility model relates to the field of magnetic powder clutch technology, specifically a hole-type clutch that facilitates heat dissipation. Background Technology

[0002] A magnetic powder clutch is an automated actuator based on electromagnetic principles and the properties of magnetic powder. Its basic working principle is as follows: magnetic particles (magnetic powder) are filled into the working gap between the stator and rotor. When the coil is energized, a magnetic field is generated, causing the magnetic powder to be instantly magnetized under the influence of the magnetic field, forming a chain-like structure (called a "magnetic powder chain") along the direction of the magnetic field lines. This transmits the torque from the stator to the rotor, realizing the connection and transmission of power. When the current is cut off, the magnetic field disappears, the magnetic powder quickly returns to a loose state, and the clutch disengages. Due to its advantages such as precise torque control, fast response speed, and smooth operation, it is widely used in industrial fields such as tension control, loading, dynamometer measurement, and speed regulation.

[0003] However, traditional orifice-type magnetic powder clutches have a significant technical bottleneck in actual operation: poor heat dissipation. Under high-speed or high-load conditions, a large amount of heat is generated inside the clutch due to friction between magnetic powders, eddy current losses, and coil resistance. If this heat cannot be dissipated in a timely and effective manner, it will lead to a series of problems: Magnetic powder performance deteriorates; overheating can cause magnetic powder to oxidize, sinter, or deteriorate, leading to a decrease in its permeability and a decrease in its fluidity, thereby affecting the stability and accuracy of torque transmission, and in severe cases, even causing torque transmission failure.

[0004] There is a risk of coil overheating. The coil is sealed inside the stator, making heat dissipation a long and difficult process. Sustained high temperatures can accelerate the aging of the coil insulation, posing a risk of coil burnout and directly affecting the clutch's lifespan and reliability.

[0005] In existing technologies, the common approach to solving heat dissipation problems is to install simple cooling fins or ventilation holes on the clutch housing. However, these methods often have the following limitations: Simple heat dissipation fins can only increase the heat dissipation area and rely on natural convection and radiation for heat dissipation. Their heat dissipation efficiency is limited and they are difficult to cope with the heat generated by high power density.

[0006] Therefore, there is an urgent need in this field for a novel magnetic powder clutch structure that can significantly improve heat dissipation while ensuring structural strength and magnetic field efficiency, thereby overcoming the shortcomings of the existing technology and meeting more demanding application requirements. Utility Model Content

[0007] (a) Technical problems to be solved The purpose of this invention is to overcome the shortcomings of the existing technology and provide a hole-type clutch that facilitates heat dissipation.

[0008] (II) Technical Solution To achieve the above objectives, this utility model provides the following technical solution: a perforated clutch for easy heat dissipation, comprising a stator, a rotor, a rotor connecting shaft, a coil, and a rotor housing, and further comprising a connecting ring, a heat dissipation cover, and multiple heat dissipation holes. The connecting ring is disposed between the stator and the rotor housing, and the connecting ring and the rotor housing are fixedly connected by an arc-shaped plate, the arc-shaped plate being distributed in a circumferential array around the center lines of the stator and the rotor housing; the heat dissipation cover is disposed at both ends of the stator, the heat dissipation holes are disposed on the heat dissipation cover, and the coil is disposed inside the stator.

[0009] Furthermore, the heat dissipation cover is fixed to the stator by at least one fixing bolt.

[0010] Furthermore, the rotor connecting shaft is fixed to the rotor, and a bearing is provided on the surface of the rotor connecting shaft, with the bearing embedded in the heat dissipation cover.

[0011] Furthermore, it also includes a magnetic channel, which is disposed between the stator and the connecting coil to guide and optimize the magnetic field distribution.

[0012] Furthermore, it also includes a baffle plate, which is disposed at the other end of the rotor housing to form a rotor chamber, in which the rotor is disposed, and the two rotor connecting shafts pass through the rotor housing and the baffle plate and are fixed to the internal rotor.

[0013] Furthermore, it also includes a fixing washer, which is used to fix the connecting ring and the stator, and the heat dissipation cover is fixed to the stator by a fixing bolt and the fixing washer.

[0014] Furthermore, the heat dissipation holes are evenly distributed on the heat dissipation cover along the center line of the heat dissipation cover, and gradually diffuse away from the center line.

[0015] Furthermore, a heat dissipation cavity is formed between the heat dissipation cover and the rotor housing, and the heat dissipation holes are connected to the heat dissipation cavity to form a forced air cooling structure.

[0016] Furthermore, as stated above.

[0017] (III) Beneficial Effects: Compared with existing technologies, this heat-dissipating bore clutch has the following advantages: I. This utility model cleverly constructs a forced air cooling structure by setting heat dissipation holes evenly distributed along the center line and gradually spreading outward on the heat dissipation cover, and connecting them with the heat dissipation cavity formed between the heat dissipation cover and the rotor shell. When the clutch rotor rotates at high speed, it will naturally drive the air to flow at high speed in the heat dissipation cavity, forming a "pumping" effect. Cold air is drawn in from the heat dissipation hole on one side, flows through the heated rotor shell and stator surface, and becomes hot air and is discharged from the heat dissipation hole on the other side, realizing active and efficient circulating heat dissipation. This design greatly improves the efficiency of internal heat dissipation and effectively controls the working temperature of the clutch.

[0018] Second, this utility model directly avoids the problems of magnetic powder oxidation, sintering and performance degradation caused by internal overheating through an efficient heat dissipation mechanism. The magnetic powder can be kept in the best working state for a long time, ensuring the stability and accuracy of torque transmission. At the same time, the coil insulation layer ages more slowly due to the lower working environment temperature, which significantly reduces the risk of coil burnout, thereby greatly improving the reliability and service life of the entire clutch.

[0019] Third, this utility model connects the connecting ring and the rotor housing through a circular array of arc-shaped plates. This structure not only provides a solid support, ensuring the mechanical strength and stability of the overall structure, but also provides a certain space for airflow, thus aiding in heat dissipation. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 In this utility model Figure 1 A partial sectional view of the structure; Figure 3 This is a three-dimensional structural diagram of the heat dissipation cover in this utility model; Figure 4 In this utility model Figure 3 A partial sectional view of the structure; Figure 5 This is a three-dimensional structural diagram of the stator in this utility model; Figure 6 This is a three-dimensional structural diagram of the connecting ring and rotor housing in this utility model; Figure 7 This is a three-dimensional structural diagram of the rotor housing and baffle in this utility model; Figure 8 This is a schematic diagram showing the shape of the heat dissipation holes in this utility model; Figure 9 This is a three-dimensional structural diagram of the fixing washer in this utility model.

[0021] In the diagram: 1. Stator; 2. Heat sink cover; 3. Fixing bolt; 4. Bearing; 5. Rotor connecting shaft; 6. Heat dissipation hole; 7. Coil; 8. Magnetic channel; 9. Rotor housing; 10. Baffle; 11. Connecting ring; 12. Arc plate; 13. Fixing washer. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] like Figure 1-9 As shown, this utility model provides a technical solution: a detailed description of the specific structure, assembly method and working principle of a hole-type clutch that facilitates heat dissipation. This embodiment highlights the heat dissipation design, which effectively reduces the temperature of the clutch during operation and improves reliability and service life through heat dissipation holes 6, heat dissipation cover 2 and forced air cooling structure.

[0024] The heat-dissipating perforated clutch of this embodiment mainly includes a stator 1, a rotor, a rotor connecting shaft 5, a coil 7, a rotor housing 9, a connecting ring 11, a heat dissipation cover 2, multiple heat dissipation holes 6, a magnetic channel 8, a baffle 10, and a fixing washer 13. The positions, connections, and functions of each component are as follows: The stator 1 has a ring-shaped structure and contains the coil 7 to generate a magnetic field. Heat sinks 2 are installed at both ends of the stator 1, and the heat sinks 2 have heat dissipation holes 6. This design significantly improves heat dissipation efficiency and greatly reduces operating temperature. A heat dissipation cavity is formed between the heat sinks 2 and the rotor housing 9, and this cavity is connected to the heat dissipation holes 6. When the clutch is engaged, the rotor rotates, causing air to flow within the heat dissipation cavity. The heat dissipation holes 6 serve as air inlets and outlets, forming a forced air cooling structure. Cold air is drawn in from one side, and hot air is expelled from the other side, effectively removing heat.

[0025] like Figure 6 As shown, the rotor housing 9 is connected to the stator 1 by a connecting ring 11. The connecting ring 11 and the rotor housing 9 are fixedly connected by multiple arc-shaped plates 12. The arc-shaped plates 12 are arranged in a circumferential array around the center line of the stator 1 and the rotor housing 9 to form a sturdy support structure. This design can balance strength and heat dissipation. While providing sturdy support, the arc-shaped plates 12 also provide a certain space for airflow.

[0026] like Figure 7As shown, the baffle 10 is disposed at the other end of the rotor housing 9, so that a rotor chamber is formed between the rotor housing 9 and the baffle 10. The rotor is placed in the chamber, and two rotor connecting shafts 5 pass through the rotor housing 9 and the baffle 10 respectively and are fixed to the internal rotor. The rotor is connected to the external equipment through the two rotor connecting shafts 5. The surface of the rotor connecting shaft 5 is provided with a bearing 4, which is embedded in the heat dissipation cover 2 to ensure the stable rotation of the rotor connecting shaft 5.

[0027] like Figure 2 and Figure 6 As shown, the magnetic channel 8 is disposed between the stator 1 and the connecting ring 11. The magnetic channel 8 is made of a high magnetic permeability material and is used to guide and optimize the magnetic field distribution. It can achieve the beneficial effects of optimizing the magnetic field distribution and improving the transmission performance. It can generate a stronger effective magnetic field under the same excitation current, improve the utilization rate of magnetic powder and transmission torque, and at the same time help reduce magnetic leakage and eddy current loss.

[0028] like Figure 3 and Figure 4 As shown, the heat sink 2 is fixed to the stator 1 by at least one fixing bolt 3. In this embodiment, the heat sink 2 adopts a circular plate structure, and its outer diameter matches the outer diameter of the stator 1. The fixing bolt 3 passes through the heat sink 2 and the fixing washer 13 and is threadedly connected to the stator 1 to ensure the secure installation of the heat sink 2.

[0029] like Figure 3 , Figure 4 and Figure 8 As shown, the heat dissipation holes 6 are arranged on the heat dissipation cover 2 and are evenly distributed along the center line of the heat dissipation cover 2. The distribution of the heat dissipation holes 6 gradually spreads away from the center line (i.e., arranged radially from the center to the periphery). This design not only increases the heat dissipation area and promotes airflow, but also forms a highly efficient heat dissipation system together with the heat dissipation cavity.

[0030] Specifically, the fixing washer 13 is used to fix the connection between the sealing connecting ring 11 and the stator 1. The fixing washer 13 is set at the joint between the connecting ring 11 and the stator 1. The two are tightly connected by bolts or compression to prevent magnetic powder leakage. The heat dissipation cover 2 is fixed to the stator 1 by the fixing bolt 3 and the fixing washer 13, thereby forming a complete closed structure, but air can be allowed to flow through the heat dissipation hole 6.

[0031] The assembly process of the integral clutch: First, install coil 7 inside stator 1 and fix the lead wire, then pass the lead wire out through the wire outlet hole on the surface of stator 1.

[0032] Then, the connecting ring 11 is welded or bolted to the rotor housing 9 through the arc plate 12 to form the rotor housing 9 assembly. The arc plate 12 is distributed in a circumferential array to provide uniform support.

[0033] Next, the rotor is placed inside the rotor housing 9, and the rotor connecting shaft 5 is passed through the rotor housing 9. The bearings 4 at both ends of the rotor connecting shaft 5 are pre-pressed into the bearing 4 seats of the heat dissipation cover 2. The stator 1 is aligned with the connecting ring 11 and fixed with fixing washers 13 and bolts to ensure that the magnetic channel 8 is located between the stator 1 and the connecting ring 11. The baffle 10 is installed to the other end of the rotor housing 9 to form a rotor chamber for the rotor to rotate inside.

[0034] Finally, the heat sink 2 is installed on both ends of the stator 1 using the fixing bolts 3. The fixing bolts 3 pass through the fixing washers 13 and are screwed into the threaded holes of the stator 1 to ensure that there is a gap between the heat sink 2 and the rotor housing 9, forming a heat dissipation cavity.

[0035] Working principle: When coil 7 is energized, stator 1 generates a magnetic field. The magnetic field distribution is optimized through magnetic channel 8, which magnetizes the magnetic powder in the rotor chamber, forming a magnetic flux to transmit torque. The rotor outputs power through rotor connecting shaft 5. During operation, the efficient heat dissipation system ensures the stability of magnetic powder performance, extends the service life of the clutch, and avoids problems such as magnetic powder oxidation, sintering, and performance degradation caused by overheating.

[0036] In terms of heat dissipation, when the rotor rotates, it drives the air to flow in the heat dissipation cavity, forming forced air cooling. The air enters or exits through the heat dissipation holes 6 of the heat dissipation cover 2. The diffusion distribution of the heat dissipation holes 6 increases the air flow path. This heat dissipation design is easy to assemble and maintain, has high practicality, and the components are highly modular. They are connected by standard parts, which facilitates disassembly and maintenance.

[0037] It should be noted that in this document, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this utility model and simplifying the description, and 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. Therefore, they should not be construed as limitations on this utility model. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, unless otherwise explicitly specified and limited, the terms "fixed," "installed," "connected," and "linked" should be interpreted broadly. For example, "installed" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a mechanical connection or an electrical connection; "linked" can be a direct connection, an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A heat-dissipating perforated clutch, comprising a stator (1), a rotor, a rotor connecting shaft (5), a coil (7), and a rotor housing (9), characterized in that, It also includes a connecting ring (11), a heat dissipation cover (2) and multiple heat dissipation holes (6). The connecting ring (11) is disposed between the stator (1) and the rotor housing (9). The connecting ring (11) and the rotor housing (9) are fixedly connected by an arc plate (12). The arc plate (12) is distributed in a circumferential array around the center line of the stator (1) and the rotor housing (9). The heat dissipation cover (2) is disposed at both ends of the stator (1). The heat dissipation holes (6) are disposed on the heat dissipation cover (2). The coil (7) is disposed inside the stator (1).

2. The hole type clutch according to claim 1, wherein The heat dissipation cover (2) is fixed to the stator (1) by at least one fixing bolt (3).

3. The hole type clutch for facilitating heat dissipation according to claim 2, wherein The rotor connecting shaft (5) is fixed to the rotor, and a bearing (4) is provided on the surface of the rotor connecting shaft (5), which is embedded in the heat dissipation cover (2).

4. The hole type clutch for facilitating heat dissipation according to claim 1, wherein It also includes a magnetic channel (8), which is disposed between the stator (1) and the connecting ring (11) for guiding and optimizing the magnetic field distribution.

5. The hole type clutch for facilitating heat dissipation according to claim 1, wherein It also includes a baffle (10), which is disposed at the other end of the rotor housing (9) to form a rotor chamber, in which the rotor is disposed, and the two rotor connecting shafts (5) pass through the rotor housing (9) and the baffle (10) and are fixed to the internal rotor.

6. The hole type clutch for facilitating heat dissipation according to claim 1, wherein It also includes a fixing washer (13), which is used to fix the connecting ring (11) and the stator (1). The heat sink (2) is fixed to the stator (1) by a fixing bolt (3) via the fixing washer (13).

7. The hole type clutch for facilitating heat dissipation according to claim 1, wherein The heat dissipation holes (6) are evenly distributed on the heat dissipation cover (2) along the center line of the heat dissipation cover (2) and gradually diffuse away from the center line.

8. The hole type clutch for facilitating heat dissipation according to claim 1, wherein A heat dissipation cavity is formed between the heat dissipation cover (2) and the rotor housing (9), and the heat dissipation hole (6) is connected to the heat dissipation cavity to form a forced air cooling structure.

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