Magnetic clutch

Abstract

A magnetic clutch comprises a driving shaft, a driven shaft, a clutch center body, a shell and a plurality of clutch mechanisms, the shell is fixedly connected with the driven shaft, the clutch center body is arranged in the shell, the middle of the clutch center body is fixedly connected with the driving shaft, inner holes are evenly formed in the clutch center body, and the clutch mechanisms are arranged in the inner holes. Each group of clutch mechanism comprises a clutch core rod, a movable magnet, a fixed magnet, a limiting nut and a clutch chip, the limiting nut is in threaded connection with the inner orifice, the movable magnet and the fixed magnet repel each other, and the clutch core rod sequentially penetrates through the movable magnet, the fixed magnet and the limiting nut from the middle and then is connected with the clutch chip. The clutch chip is separated from or tightly attached to the shell through the interaction of magnetic force and centrifugal force, so that the driven shaft is driven, rotation kinetic energy is transmitted to the driven shaft from the driving shaft, the clutch function is achieved, the higher the rotation speed is, the tighter the abutting force of the clutch chip and the shell is, the tighter the transmission force is, the structure is simple and direct, efficiency is high, manufacturing is easy, and cost is low. And the cost is low.

Description

A magnetic clutch Technical Field

[0001] This utility model relates to the field of transmission device technology, and in particular to a magnetic clutch. Background Technology

[0002] In modern industrial transmission systems, the clutch is a crucial component used to transmit and interrupt power to meet the operational needs of equipment under various conditions. Traditional clutches come in various types, including friction clutches and hydraulic couplings, but all have limitations. First, friction clutches rely on friction to transmit torque. Under frequent start-stop or high-load conditions, the friction plates are prone to wear, requiring regular maintenance and replacement, increasing equipment downtime and maintenance costs. Furthermore, the friction process generates heat, and poor heat dissipation can lead to decreased clutch performance or even failure. Second, hydraulic couplings transmit power through a liquid medium. While offering advantages such as buffering and shock absorption, they suffer from relatively low transmission efficiency, complex structure, and high requirements for the working fluid. Oil leaks or contamination can affect the stability and reliability of the entire transmission system. With the continuous improvement of industrial automation, the performance requirements for clutches are becoming increasingly stringent. They must operate stably and reliably at high speeds, while also possessing simple structure, convenient maintenance, and energy efficiency. Therefore, existing clutches are insufficient to meet the needs of modern industrial manufacturing. Summary of the Invention

[0003] The purpose of this invention is to provide a magnetic clutch that is simple in structure, straightforward, and highly efficient, so as to overcome the shortcomings of the existing technology.

[0004] The technical solution adopted by this utility model is as follows: a magnetic clutch, including a drive shaft, a driven shaft, a clutch center body, a housing, and multiple clutch mechanisms. The housing and the driven shaft are fixedly connected. The clutch center body is disposed inside the housing and is fixedly connected to the drive shaft at its center. Multiple inner holes, the same number as the clutch mechanisms, are evenly opened on the clutch center body. The multiple clutch mechanisms are respectively disposed in the multiple inner holes. Each clutch mechanism includes a clutch core rod, a moving magnet, a fixed magnet, a limiting nut, and a clutch chip. The moving magnet, fixed magnet, and limiting nut are arranged sequentially from the inside to the outside of each inner hole. The limiting nut is threaded to the inner hole opening. The moving magnet and the fixed magnet repel each other. The clutch core rod passes sequentially through the moving magnet, fixed magnet, and limiting nut from the center and is connected to the clutch chip. The clutch chip is placed in the annular gap between the housing and the clutch center body. The clutch core rod and the moving magnet can move axially in the inner hole.

[0005] A further technical solution is: a bearing is provided on one side of the outer casing and on the driven shaft.

[0006] Furthermore, the clutch core rod and the clutch chip are connected by a pin.

[0007] Further: The clutch center body is internally hollow.

[0008] Furthermore: the clutch mechanism has four sets.

[0009] Due to the adoption of the above technical solution, the magnetic clutch of this utility model has the following beneficial effects:

[0010] 1. Because this utility model is equipped with a clutch mechanism, it uses the interaction of magnetic force and centrifugal force to make the clutch chip separate from or stick to the outer shell, thereby driving the driven shaft and transferring rotational kinetic energy from the driving shaft to the driven shaft to realize the clutch function. The faster the rotation speed, the tighter the contact force between the clutch chip and the outer shell, and the tighter the force transmission. It is an automatic clutch device controlled by rotation speed. It has a simple and direct structure, high efficiency, simple manufacturing, and low cost.

[0011] 2. This utility model eliminates the need for direct mechanical friction or complex hydraulic transmission systems, effectively overcoming many drawbacks of traditional clutches. It provides an innovative solution for the industrial transmission field and has shown broad application prospects in many industries such as machinery manufacturing, automotive industry, and solar power generation. It is expected to promote the further development and innovation of transmission technology.

[0012] 3. Because the clutch center body of this utility model is hollowed out, the weight can be greatly reduced, the loss can be reduced, and the transmission efficiency can be further improved.

[0013] The technical features of a magnetic clutch of this utility model will be further described below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0014] Figure 1 is a schematic diagram of the front structure of a magnetic clutch according to the present invention;

[0015] Figure 2 is a schematic diagram of the side structure of a magnetic clutch according to the present invention;

[0016] Figure 3 is a schematic diagram of the working structure of a magnetic clutch according to this utility model.

[0017] In the picture:

[0018] 1—Outer shell, 2—Annular gap, 3—Clutch chip, 4—Pin, 5—Limit nut, 6—Fixed magnet, 7—Clutch core rod, 8—Moving magnet, 9—Drive shaft, 10—Inner hole, 11—Inner hollow, 12—Clutch center body, 13—Bearing, 14—Driven shaft. Detailed Implementation Example 1

[0019] A magnetic clutch, as shown in Figures 1 and 2, includes a drive shaft 9, a driven shaft 14, a clutch center body 12, a housing 1, and four clutch mechanisms. The housing 1 and the driven shaft 14 are fixedly connected. A bearing 13 is provided on one side of the housing 1 and on the driven shaft 14. The clutch center body 12 is cylindrical inside the housing 1, and there is an annular gap 2 between the clutch center body 12 and the housing 1. The middle part of the clutch center body 12 is fixedly connected to the drive shaft 9. Four elongated inner holes 10 are evenly opened from the middle outward on the clutch center body 12. The four clutch mechanisms are respectively disposed in the four inner holes. Each clutch mechanism includes a clutch core rod 7, a moving magnet 8, a fixed magnet 6, a limit nut 5, and a clutch chip 3. The moving magnet 8 is arranged sequentially from the inside to the outside inside each inner hole 10. The clutch assembly includes a fixed magnet 6 and a limiting nut 5, the limiting nut 5 being threadedly connected to the inner hole (i.e., the inner wall of the inner hole of the clutch center body 12). The moving magnet 8 and the fixed magnet 6 are mutually repulsive, and the distance between them is greater than the annular gap 2. The clutch core rod 7 is T-shaped, and its shaft end passes through the moving magnet 8, the fixed magnet 6 and the limiting nut 5 in sequence from the middle and is connected to the clutch chip 3 by a pin 4. The clutch chip 3 is placed in the annular gap 2 between the outer shell 1 and the clutch center body 12. The clutch core rod 7 and the moving magnet 8 can move axially in the inner hole 10, thereby driving the clutch chip 3 to move outward and press against the outer shell 1. The clutch center body 12 has an inner hollow 11, that is, the clutch center body 12 is hollowed out, which can greatly reduce weight and reduce losses. The moving magnet 8 and the fixed magnet 6 are circular magnetic sheets.

[0020] Work process:

[0021] As shown in Figure 3, when the speed n of the drive shaft 9 reaches a certain (equivalent) rotational speed, centrifugal force is generated internally. The fixed magnet 6 is stuck due to the action of the limiting nut 5 and cannot move outward. The clutch core rod 7 and the moving magnet 8 sleeved on it move outward under the action of centrifugal force. The moving magnet 8 approaches the fixed magnet 6, and the clutch chip 3 is driven by the clutch core rod 7 and presses against the outer shell 1, thus engaging the clutch. The friction causes the outer shell and the driven shaft 14 welded to the outer shell to rotate synchronously at high speed, transmitting energy. Conversely, when the rotational speed n of the drive shaft 9 decreases or is interrupted, the centrifugal force weakens or disappears. Due to the mutual repulsion between the moving magnet 8 and the fixed magnet 6, the moving magnet 8 and the clutch core rod 7 move inward until they return to their original positions. The clutch chip 3 does not contact the outer shell 1, and the driven shaft 14 rotates under the action of inertia until it stops, thus achieving the clutch action. The centrifugal force can be limited by adjusting (increasing or decreasing) the fixed magnet and the moving magnet, thereby adjusting the rotational speed for engaging the clutch. Example 2

[0022] A magnetic clutch, the structure of which is basically the same as that of Embodiment 1, except that the clutch mechanism is in the form of 2, 4, 5 or 6 groups.

[0023] The above embodiments are merely preferred embodiments of this utility model. The structure of this utility model is not limited to the forms listed in the above embodiments. Any modifications, equivalent substitutions, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A magnetic clutch, characterized in that: The clutch includes a drive shaft (9), a driven shaft (14), a clutch center body (12), a housing (1), and multiple clutch mechanisms. The housing (1) and the driven shaft (14) are fixedly connected. The housing (1) contains the clutch center body (12), which is fixedly connected to the drive shaft (9) at its center. Multiple inner holes (10) are evenly opened on the clutch center body (12), the same number as the clutch mechanisms. The multiple clutch mechanisms are respectively located in the multiple inner holes (10). Each clutch mechanism includes a clutch core rod (7), a moving magnet (8), a fixed magnet (6), and a limit nut (7). 5) and clutch chip (3), each inner hole (10) is provided with a moving magnet (8), a fixed magnet (6) and a limiting nut (5) from the inside out. The limiting nut (5) is threaded to the inner hole opening. The moving magnet (8) and the fixed magnet (6) are mutually repulsive. The clutch core rod (7) passes through the moving magnet (8), the fixed magnet (6) and the limiting nut (5) from the middle and is connected to the clutch chip (3). The clutch chip (3) is placed in the annular gap (2) between the outer shell (1) and the clutch center body (12). The clutch core rod (7) and the moving magnet (8) can move axially in the inner hole (10).

2. A magnetic clutch according to claim 1, characterized in that: A bearing (13) is provided on one side of the outer casing (1) and on the driven shaft (14).

3. A magnetic clutch according to claim 1, characterized in that: The clutch core rod (7) and the clutch chip (3) are connected by a pin (4).

4. A magnetic clutch according to claim 1, characterized in that: The clutch center body (12) has an internal cavity (11).

5. A magnetic clutch according to claim 1, characterized in that: The clutch mechanism has four sets.

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