Electromagnetic clutch

Abstract

The utility model relates to the technical field of electromagnetic clutches, and provides an electromagnetic clutch, which comprises a belt pulley with a mounting ring groove; the partition piece is arranged in the mounting ring groove, and a first ring groove and a second ring groove are formed by the partition piece and the mounting ring groove; the first coil is arranged in the first ring groove; and the second coil is arranged in the second ring groove. By means of the technical scheme, the problems that in the prior art, due to abrasion between friction plates, transmission efficiency is reduced, and energy consumption is increased are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of electromagnetic clutches, and in particular to an electromagnetic clutch. Background Art

[0002] In the prior art, an electromagnetic clutch is usually composed of a coil, an iron core and a friction plate. When the coil is energized, the iron core generates magnetic force, attracting the friction plates to contact each other, thereby transmitting power. However, the existing electromagnetic clutch has the following problems: Low transmission efficiency: Due to the wear between the friction plates, the transmission efficiency is reduced and the energy consumption is increased. Utility Model Content

[0003] The utility model provides an electromagnetic clutch, which solves the problems in the related art of reduced transmission efficiency and increased energy consumption due to wear between friction plates.

[0004] The technical solution of the utility model is as follows:

[0005] An electromagnetic clutch, comprising:

[0006] A pulley having a mounting ring groove;

[0007] A barrier member is arranged in the mounting ring groove, and the barrier member divides the mounting ring groove into a first ring groove and a second ring groove;

[0008] A first coil is arranged in the first ring groove, and a large coil magnetic circuit is formed when the first coil is energized;

[0009] The second coil is arranged in the second annular groove. When the second coil is energized, a small coil magnetic circuit is formed. Both the large coil magnetic circuit and the small coil magnetic circuit pass through the barrier member.

[0010] Optionally, it also includes:

[0011] The housing is arranged in the mounting ring groove, the barrier member is arranged on the housing, and the barrier member forms the first ring groove and the second ring groove through the housing and the mounting ring groove.

[0012] Optionally, the first coil is a large coil, the second coil is a small coil, and there is an installation gap between the second coil and the pulley;

[0013] The pulley has a protrusion, and the protrusion is located in the installation gap and abuts against the second coil.

[0014] Optionally, the pulley has a third annular groove, and further comprises:

[0015] The suction cup is arranged in the third annular groove, and the pulley is used for driving the suction cup to rotate.

[0016] Optionally, it also includes:

[0017] The main shaft is provided with the pulley on the main shaft, and the main shaft drives the pulley to rotate when it rotates.

[0018] Optionally, it also includes:

[0019] A bearing, rotatably disposed on the main shaft;

[0020] The eddy current disk is arranged on the bearing and is rotatably arranged on the main shaft through the bearing.

[0021] Optionally, it also includes:

[0022] A fixed disk, disposed on the eddy current disk;

[0023] An armature, disposed on the eddy current disk;

[0024] A permanent magnet is arranged on the fixed disk, and the permanent magnet is used to adsorb the armature.

[0025] The working principle and beneficial effects of the utility model are:

[0026] In the utility model, in order to solve the problem of reduced transmission efficiency and increased energy consumption due to wear between friction plates in the related art, this solution solves the problem of low transmission efficiency by reducing the axial clearance. The axial clearance of the electromagnetic clutch refers to the gap in the axial direction during the operation of the electromagnetic clutch. This gap is usually caused by design or manufacturing errors, component wear and other reasons. The disadvantages of the axial clearance of the electromagnetic clutch are mainly reflected in the following aspects: Reduced transmission efficiency: The existence of the axial clearance of the electromagnetic clutch reduces the contact area between the components, thereby reducing the transmission efficiency. In the process of transmitting power, part of the energy will be converted into heat, resulting in increased energy consumption. Intensified wear: The existence of the axial clearance intensifies the relative movement between the components, resulting in more serious wear. After long-term use, wear will cause component damage and affect the normal operation of the electromagnetic clutch. Reduced control accuracy: The axial clearance will affect the response speed and stability of the electromagnetic clutch, resulting in reduced control accuracy. In applications where precise speed control is required, the existence of the axial clearance may lead to performance degradation. Shortened service life: The wear and reduced transmission efficiency caused by the axial clearance will shorten the service life of the electromagnetic clutch. Frequent maintenance and replacement will increase the cost of use.

[0027] A pulley is provided with a mounting ring groove for installing other components. A spacer is arranged in the mounting ring groove, and the spacer and the mounting ring groove together form a first ring groove and a second ring groove. The two ring grooves are used to accommodate the first coil and the second coil to realize the electromagnetic clutch function. The first coil and the second coil are respectively installed in the first ring groove and the second ring groove. When the coil is energized, a magnetic field is generated to drive the clutch to work. In this scheme, the coil is designed to have a structure of a first coil and a second coil, and the first coil and the second coil are separated by a spacer. It can be seen from the large coil magnetic circuit and the small coil magnetic circuit that the first coil and the second coil share a magnetic circuit, thereby reducing the axial gap. This increases the transmission efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The preferred implementation modes will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present utility model.

[0029] Figure 1 It is a schematic diagram of the structure of the utility model;

[0030] Figure 2 for Figure 1 A magnified schematic diagram of point A;

[0031] In the figure: 100, pulley, 110, mounting ring groove, 200, spacer, 210, first ring groove, 220, second ring groove, 300, first coil, 400, second coil, 500, housing, 120, mounting gap, 130, protrusion, 140, third ring groove, 600, suction cup, 700, main shaft, 800, bearing, 900, eddy current disk, 1000, fixed disk, 1100, armature, 1200, permanent magnet, 1300, large coil magnetic circuit, 1400, small coil magnetic circuit. DETAILED DESCRIPTION

[0032] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the specific implementation methods of the utility model will be described below with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, they can also be understood as further technical solutions without paying creative work. In some figures, components with the same structure or function are only schematically illustrated, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0033] In this article, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0034] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0035] Reference Figure 1~Figure 2 , which is the first embodiment of the utility model, proposes

[0036] An electromagnetic clutch, comprising:

[0037] The pulley 100 has a mounting ring groove 110;

[0038] The barrier member 200 is disposed in the mounting ring groove 110, and the barrier member 200 divides the mounting ring groove 110 into a first ring groove 210 and a second ring groove 220;

[0039] The first coil 300 is disposed in the first annular groove 210. When the first coil 300 is energized, a large coil magnetic circuit 1300 is formed;

[0040] The second coil 400 is disposed in the second annular groove 220 . When the second coil 400 is energized, a small coil magnetic circuit 1400 is formed. Both the large coil magnetic circuit 1300 and the small coil magnetic circuit 1400 pass through the barrier member 200 .

[0041] In this embodiment, in order to solve the problem of reduced transmission efficiency and increased energy consumption due to wear between friction plates in the related art, this solution solves the problem of low transmission efficiency by reducing the axial clearance. The axial clearance of the electromagnetic clutch refers to the gap in the axial direction during the operation of the electromagnetic clutch. This gap is usually caused by design or manufacturing errors, component wear and other reasons. The disadvantages of the axial clearance of the electromagnetic clutch are mainly reflected in the following aspects: Reduced transmission efficiency: The existence of the axial clearance of the electromagnetic clutch reduces the contact area between the components, thereby reducing the transmission efficiency. In the process of transmitting power, part of the energy will be converted into heat, resulting in increased energy consumption. Intensified wear: The existence of the axial clearance intensifies the relative movement between the components, resulting in more serious wear. After long-term use, wear will cause component damage and affect the normal operation of the electromagnetic clutch. Reduced control accuracy: The axial clearance will affect the response speed and stability of the electromagnetic clutch, resulting in reduced control accuracy. In applications where precise speed control is required, the existence of the axial clearance may lead to performance degradation. Shortened service life: The wear and reduced transmission efficiency caused by the axial clearance will shorten the service life of the electromagnetic clutch. Frequent maintenance and replacement will increase the cost of use.

[0042] The pulley 100 is provided with a mounting annular groove 110 for mounting other components. The barrier 200 is arranged in the mounting annular groove 110, and the barrier 200 and the mounting annular groove 110 together form a first annular groove 210 and a second annular groove 220. The two annular grooves are used to accommodate the first coil 300 and the second coil 400 to realize the electromagnetic clutch function. The first coil 300 and the second coil 400 are respectively installed in the first annular groove 210 and the second annular groove 220. When the coil is energized, a magnetic field is generated to drive the clutch to work. In this scheme, the coil is designed as a structure of a first coil 300 and a second coil 400, and the first coil 300 and the second coil 400 are separated by the barrier 200. It can be seen from the large coil magnetic circuit 1300 and the small coil magnetic circuit 1400 that the first coil 300 and the second coil 400 share a magnetic circuit, thereby reducing the axial gap. This increases the transmission efficiency.

[0043] Furthermore, it also includes: a shell 500 disposed in the mounting ring groove 110 , a barrier member 200 disposed on the shell 500 , and the barrier member 200 forms a first ring groove 210 and a second ring groove 220 through the shell 500 and the mounting ring groove 110 .

[0044] In this embodiment, the housing 500 is installed in the mounting ring groove 110, and the barrier 200 is fixed on the housing 500. Through the intervention of the housing 500, the barrier 200 and the mounting ring groove 110 more stably form the first ring groove 210 and the second ring groove 220, thereby enhancing the overall structural strength of the clutch. Both the housing 500 and the barrier 200 can be magnetically conductive.

[0045] Furthermore, the first coil 300 is a large coil, the second coil 400 is a small coil, and the second coil 400 and the pulley 100 have an installation gap 120 ; the pulley 100 has a protrusion 130 , the protrusion 130 is located in the installation gap 120 and abuts against the second coil 400 .

[0046] In this embodiment, in order to fix the second coil 400, a protrusion 130 is designed on the pulley 100. The protrusion 130 can prevent the small coil from moving and at the same time, the protrusion 130 can conduct magnetism. The protrusion 130 and the barrier 200 cooperate to reduce the axial gap in the magnetic circuit.

[0047] Further, the pulley 100 has a third annular groove 140, and further includes:

[0048] The suction cup 600 is disposed in the third annular groove 140 , and the pulley 100 is used to drive the suction cup 600 to rotate.

[0049] Also includes:

[0050] The main shaft 700 and the pulley 100 are arranged on the main shaft 700 , and the pulley 100 is driven to rotate when the main shaft 700 rotates.

[0051] Also includes:

[0052] A bearing 800 is rotatably disposed on the main shaft 700;

[0053] The vortex disk 900 is disposed on the bearing 800 and is rotatably disposed on the main shaft 700 via the bearing 800 .

[0054] Also includes:

[0055] A fixed plate 1000 is arranged on the eddy current plate 900;

[0056] An armature 1100 is arranged on the eddy current disk 900;

[0057] The permanent magnet 1200 is disposed on the fixed disk 1000 , and is used to attract the armature 1100 .

[0058] In this embodiment, in order to achieve three-speed adjustment, in the first stage, the first coil 300 and the second coil 400 are not energized, and the main shaft 700 drives the fan fixed disk 1000 to rotate; in the second stage, the second coil 400 is energized, and after energization, the small suction cup 600 on the innermost side is adsorbed, the small suction cup 600 and the pulley 100 are attracted together, the small suction cup 600 and the bearing 800 fixed disk 1000 are connected as one, the armature 1100 and the permanent magnet 1200 are adsorbed, and the fan fixed disk 1000 is driven to rotate; in the third stage, the first coil 300 and the second coil 400 are energized at the same time, and after energization, the small suction cup 600 and the large suction cup 600 adsorb the pulley 100 at the same time, the large suction cup 600 and the eddy current disk 900 are fixed together, the pulley 100 and the fixed disk 1000 rotate synchronously, and the rotation speed of the pulley 100 is the rotation of the fan.

[0059] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. An electromagnetic clutch, characterized in that: include: A pulley (100) having a mounting ring groove (110); A barrier member (200) is disposed in the mounting annular groove (110), the barrier member (200) dividing the mounting annular groove (110) into a first annular groove (210) and a second annular groove (220); A first coil (300) is disposed in the first annular groove (210), and the first coil (300) forms a large coil magnetic circuit (1300) when energized; The second coil (400) is arranged in the second annular groove (220); when the second coil (400) is energized, a small coil magnetic circuit (1400) is formed; the large coil magnetic circuit (1300) and the small coil magnetic circuit (1400) both pass through the barrier member (200).

2. An electromagnetic clutch according to claim 1, characterized in that: Also includes: The housing (500) is arranged in the mounting annular groove (110), the barrier member (200) is arranged on the housing (500), and the barrier member (200) forms the first annular groove (210) and the second annular groove (220) through the housing (500) and the mounting annular groove (110).

3. The electromagnetic clutch according to claim 1, characterized in that: The first coil (300) is a large coil, the second coil (400) is a small coil, and there is an installation gap (120) between the second coil (400) and the pulley (100); The pulley (100) has a protrusion (130), and the protrusion (130) is located in the installation gap (120) and abuts against the second coil (400).

4. The electromagnetic clutch according to claim 1, characterized in that: The pulley (100) has a third annular groove (140) and further comprises: The suction cup (600) is arranged in the third annular groove (140), and the pulley (100) is used to drive the suction cup (600) to rotate.

5. The electromagnetic clutch according to claim 1, characterized in that: Also includes: A main shaft (700), the belt pulley (100) being arranged on the main shaft (700), and the main shaft (700) drives the belt pulley (100) to rotate when it rotates.

6. An electromagnetic clutch according to claim 5, characterized in that: Also includes: A bearing (800) rotatably disposed on the main shaft (700); The vortex disk (900) is arranged on the bearing (800) and is rotatably arranged on the main shaft (700) via the bearing (800).

7. An electromagnetic clutch according to claim 6, characterized in that: Also includes: A fixed disk (1000) disposed on the eddy current disk (900); An armature (1100) is arranged on the eddy current disk (900); A permanent magnet (1200) is arranged on the fixed disk (1000), and the permanent magnet (1200) is used to adsorb the armature (1100).

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