Annular spliced magnet assembly

Abstract

The utility model discloses an annular splicing type magnet assembly which comprises a right half magnet ring and a left half magnet ring used for forming an annular magnet with the right half magnet ring, and two symmetrical supporting discs are installed on the plane wall of the side, close to the left half magnet ring, of the right half magnet ring. Annular cavities coincident with the projection shape of the supporting disc are formed in the front side and the rear side of the interior of the right half magnetic ring correspondingly, a hollow cylinder is installed in the supporting disc, and a locking rod is arranged on the side, away from the right half magnetic ring, of the supporting disc. And an elastic screwing structure which is rotatable, elastically telescopic and connected with the back of the lock rod is mounted in the hollow cylinder. According to the utility model, the possible equipment performance loss or fault caused by the sliding of the magnetic ring component is reduced, and meanwhile, the relative positions of the right half magnetic ring and the left half magnetic ring are always kept fixed through the design of the anti-drop connection, so that the disturbance or change of a magnetic field caused by the relative sliding is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of annular magnets, in particular to an annular spliced magnet assembly. Background Art

[0002] Annular magnet assemblies mainly act on the generation and control of magnetic fields. They play a key role in many applications such as motors, generators, sensors, magnetic storage devices, etc., and are usually used in the rotor and stator parts of motors and generators. In a motor, they generate a magnetic field that interacts with an electric current to produce mechanical motion or electrical energy conversion. In a generator, electrical energy is generated through the magnetic field produced by mechanical motion. Such annular magnets can be circular, cylindrical or other complex shapes, and are designed and manufactured according to specific application requirements. For example, an annular spliced magnet assembly disclosed in the authorized announcement number CN216749506U includes an annular magnet body, and the annular magnet body is assembled by at least two magnet components; the magnet components are provided with splicing parts, one end of the splicing part is provided with a connecting block, and the other end of the splicing part is provided with a connecting groove for accommodating and installing the connecting block. The connecting groove and the connecting block are respectively located at both ends of the magnet component. The connecting block and the connecting groove are used to connect at least two magnet components end to end to form an annular magnet body. The connecting block and the connecting groove form a mortise and tenon structure, which can be firmly connected without the aid of tools. However, when the magnet component in this technical solution is sleeved and installed on a shaft workpiece, its mortise and tenon structure lacks axial limitation, and at this time, relative sliding or even slipping is likely to occur between the two magnetic blocks. Especially in a high-vibration or moving environment, part or the whole of the magnet component may slip off the shaft workpiece, resulting in the shutdown of the equipment. Content of the Utility Model

[0003] The purpose of the utility model is to provide an annular spliced magnet assembly. The right half magnetic ring and the left half magnetic ring are inserted through a locking rod, a cross cutting groove and a rectangular cutting part. After the locking rod enters the rectangular cutting part, the elastic screwing structure is used to make the locking rod tightly press inside the rectangular cutting part, so as to realize the anti-detachment connection function between the right half magnetic ring and the left half magnetic ring, and avoid relative sliding of the magnetic rings in the axial direction, so as to solve the problems put forward in the above background art.

[0004] To achieve the above object, the present utility model provides the following technical solution: a ring-shaped spliced magnet assembly, including a right half magnetic ring and a left half magnetic ring used to form a ring magnet with the right half magnetic ring. On one side plane wall of the right half magnetic ring close to the left half magnetic ring, two symmetric support discs are installed. Ring-shaped cavities that coincide with the projection shape of the support discs are arranged on the front and rear sides inside the right half magnetic ring. A hollow cylinder is installed inside the support disc. A locking rod is arranged on the side of the support disc away from the right half magnetic ring. An elastic screwing structure that can rotate, elastically expand and contract and is connected to the back of the locking rod is installed inside the hollow cylinder. On the outer wall of the left half magnetic ring close to the right half magnetic ring, two symmetric cross-cut grooves are arranged. A rectangular cut-out part that communicates with the cross-cut grooves is arranged inside the left half magnetic ring. The locking rod enters the rectangular cut-out part and is inserted into one side inner wall of the rectangular cut-out part.

[0005] Preferably, a number of wing plates are installed at the tops of the right half magnetic ring and the left half magnetic ring. An arc-shaped wall is arranged on the outer wall of the wing plate close to the central axis of the magnet assembly. The diameter of the arc-shaped wall is the same as the inner diameter of the right half magnetic ring and the left half magnetic ring.

[0006] Preferably, through holes are arranged on both sides of the surface of the wing plate.

[0007] Preferably, circular protrusions are installed on both sides of the back of the locking rod. Two circular inner grooves are opened on one side inner wall of the rectangular cut-out part. The extension line of the connecting line of the centers of the two circular inner grooves intersects with the extension line of the central axis of the magnet assembly and forms an acute angle.

[0008] Preferably, the elastic screwing structure includes a central shaft slidably installed inside the hollow cylinder, a rotating cylinder integrally formed at one end of the central shaft and connected to the back of the locking rod, and an internal hexagonal head fixed at the other end of the central shaft. A limiting spring is fixed on one side inner wall of the hollow cylinder. One end of the limiting spring is fixedly connected to the outer wall of one side of the rotating cylinder.

[0009] Preferably, the limiting spring and the central shaft are concentrically sleeved. The outer diameter of the rotating cylinder is equal to the inner diameter of the hollow cylinder. The outer diameter of the central shaft is smaller than the outer diameter of the rotating cylinder.

[0010] Compared with the prior art, the beneficial effects of the present utility model are as follows: By providing an elastic screwing structure and a locking rod and other cooperating structures, the right half magnetic ring and the left half magnetic ring after connection will not undergo axial relative sliding under the limiting action of the locking rod and the rectangular cutting part, which can ensure the connection stability and structural strength of the annular magnet assembly. During the operation of the equipment, even if it is subjected to vibration or external impact, the locking rod can maintain a tightened state, thus ensuring the stability and reliability of the magnet assembly, reducing the loss of equipment performance or failures that may be caused by sliding. At the same time, through the anti-disconnection connection design, the relative positions of the right half magnetic ring and the left half magnetic ring are always kept fixed, and the magnetic field will not be disturbed or changed due to relative sliding. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a schematic three-dimensional structure diagram of the present utility model Figure 1 ;

[0012] Figure 2 is a schematic three-dimensional structure diagram of the present utility model Figure 2 ;

[0013] Figure 3 is a schematic three-dimensional structure diagram of the right half magnetic ring of the present utility model;

[0014] Figure 4 is a schematic three-dimensional structure diagram of the left half magnetic ring of the present utility model Figure 1 ;

[0015] Figure 5 is a schematic three-dimensional structure diagram of the left half magnetic ring of the present utility model Figure 2 ;

[0016] Figure 6 is a schematic three-dimensional sectional structure diagram of the hollow cylinder of the present utility model;

[0017] Figure 7 is a schematic three-dimensional structure diagram of the hollow cylinder of the present utility model;

[0018] In the figure: 1, right half magnetic ring; 2, left half magnetic ring; 3, annular cavity; 4, wing plate; 401, arc wall; 5, support disk; 6, hollow cylinder; 7, locking rod; 701, circular protrusion; 8, elastic screwing structure; 801, central axis; 802, internal hexagonal head; 803, rotating cylinder; 804, limiting spring; 9, rectangular cutting part; 901, circular inner groove; 10, cross cutting groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0020] Please refer to Figure 1-7 , an embodiment provided by the present utility model: a ring-shaped splicing magnet assembly, including a right half magnetic ring 1 and a left half magnetic ring 2 used to form a ring magnet with the right half magnetic ring 1. On the side plane wall of the right half magnetic ring 1 close to the left half magnetic ring 2, two symmetric support disks 5 are installed. Ring-shaped cavities 3 that coincide with the projection shape of the support disks 5 are arranged on the front and rear sides inside the right half magnetic ring 1. A hollow cylindrical column 6 is installed inside the support disk 5. A locking rod 7 is arranged on the side of the support disk 5 away from the right half magnetic ring 1. An elastic twisting structure 8 that can rotate, elastically expand and contract and is connected to the back of the locking rod 7 is installed inside the hollow cylindrical column 6. On the outer wall of the left half magnetic ring 2 close to the right half magnetic ring 1, two symmetric cross-cut grooves 10 are arranged. A rectangular cut-out part 9 that communicates with the cross-cut grooves 10 is arranged inside the left half magnetic ring 2. The locking rod 7 enters the rectangular cut-out part 9 and is inserted into the inner wall of one side of the rectangular cut-out part 9;

[0021] On both sides of the back of the locking rod 7, circular protrusions 701 are installed. On the inner wall of one side of the rectangular cut-out part 9, two circular inner grooves 901 are opened. The extension line of the center connection line of the two circular inner grooves 901 intersects with the extension line of the central axis of the magnet assembly and forms an acute angle. Rotate the elastic twisting structure 8 so that the elastic twisting structure 8 drives the locking rod 7 to rotate until the circular protrusions 701 on the back of the locking rod 7 are concentric and opposite to the circular inner grooves 901 on the inner wall of one side of the rectangular cut-out part 9. Then release the elastic twisting structure 8 so that the elastic element inside the elastic twisting structure 8 resets, and the circular inner grooves 901 and 901 are concentrically inserted by the movable end of the elastic twisting structure 8, so that the right half magnetic ring 1 and the left half magnetic ring 2 are stably connected through components such as the rectangular cut-out part 9, the locking rod 7, and the elastic twisting structure 8;

[0022] The elastic screwing structure 8 includes a central shaft 801 slidably installed inside the hollow cylindrical column 6, a rotating cylinder 803 integrally formed at one end of the central shaft 801 and connected to the back surface of the locking rod 7, and an internal hexagonal head 802 fixed to the other end of the central shaft 801. A limiting spring 804 is fixed on one inner wall of the hollow cylindrical column 6, and one end of the limiting spring 804 is fixedly connected to the outer wall of one side of the rotating cylinder 803. After the right half magnetic ring 1 and the left half magnetic ring 2 are connected through the cross-cut groove 10 and the locking rod 7, the staff can take a hexagonal screwdriver. The end of the hexagonal screwdriver is inserted into the internal hexagonal head 802, and force is applied to the internal hexagonal head 802 and the central shaft 801 in the direction of the flat wall of the right half magnetic ring 1. Then the central shaft 801 will drive the rotating cylinder 803 and the locking rod 7 to move together until the locking rod 7 enters the rectangular cutout 9. Subsequently, the staff rotates the hexagonal screwdriver, and the hexagonal screwdriver drives the internal hexagonal head 802, the central shaft 801, and the locking rod 7 to rotate until the circular protrusion 701 and the circular inner groove 901 are concentric. During this process, the limiting spring 804 will be in a stretched state;

[0023] The limiting spring 804 and the central shaft 801 are concentrically sleeved. The outer diameter of the rotating cylinder 803 is equal to the inner diameter of the hollow cylindrical column 6, and the outer diameter of the central shaft 801 is smaller than the outer diameter of the rotating cylinder 803. When the staff removes the hexagonal screwdriver, the limiting spring 804 starts to elastically reset, and then the circular protrusion 701 is inserted into the circular inner groove 901. At this time, the locking rod 7 can be firmly fixed inside the rectangular cutout 9, thereby firmly connecting the right half magnetic ring 1 and the left half magnetic ring 2 and avoiding the problem of loose assembly; The anti-disconnection connection structure can maintain stability for a long time, reduce the intervention frequency of maintenance personnel, and at the same time facilitate the staff to install and use the magnet assembly;

[0024] A plurality of wing plates 4 are installed at the tops of the right half magnetic ring 1 and the left half magnetic ring 2. An arc wall 401 is provided on the outer wall surface of the wing plate 4 close to the central axis of the magnet assembly. The diameter of the arc wall 401 is the same as the inner diameter of the right half magnetic ring 1 and the left half magnetic ring 2. Through holes are provided on both sides of the surface of the wing plate 4. By providing the wing plates 4 at the tops of the right half magnetic ring 1 and the left half magnetic ring 2, when the right half magnetic ring 1 and the left half magnetic ring 2 are sleeved on the shaft body, the arc wall 401 on the outer wall of the wing plate 4 can be in contact with the shaft body to ensure the connection area between the magnetic ring and the shaft body workpiece.

[0025] When the embodiment of the present application is in use, first, the staff takes out the right half magnetic ring 1 and the left half magnetic ring 2 to be assembled into a complete annular magnet assembly, making the flat walls of the right half magnetic ring 1 and the left half magnetic ring 2 face each other. And the locking rod 7 on the outer wall of the right half magnetic ring 1 enters into the rectangular cutting part 9 of the left half magnetic ring 2 through the cross cutting groove 10. At this time, the flat walls of the right half magnetic ring 1 and the left half magnetic ring 2 are in contact. Subsequently, the staff manually rotates the elastic screwing structure 8 and pushes the elastic screwing structure 8 towards the flat wall direction of the right half magnetic ring 1, so that the moving end of the elastic screwing structure 8 drives the locking rod 7 to further enter into the rectangular cutting part 9. Then rotate the elastic screwing structure 8, so that the elastic screwing structure 8 drives the locking rod 7 to rotate until the circular protrusion 701 on the back of the locking rod 7 is concentric and opposite to the circular inner groove 901 on the inner wall of one side of the rectangular cutting part 9. Then release the elastic screwing structure 8, so that the elastic element inside the elastic screwing structure 8 resets, and the circular inner groove 901 and the circular inner groove 901 are concentrically inserted by the moving end of the elastic screwing structure 8. In this way, the right half magnetic ring 1 and the left half magnetic ring 2 are stably connected through components such as the rectangular cutting part 9, the locking rod 7, and the elastic screwing structure 8. After connection, the right half magnetic ring 1 and the left half magnetic ring 2 will not have axial relative slip under the limiting action of the locking rod 7 and the rectangular cutting part 9, which can ensure the connection stability and structural strength of the annular magnet assembly. During the operation of the equipment, even if it is subjected to vibration or external impact, the locking rod 7 can maintain a tightened state, thus ensuring the stability and reliability of the magnet assembly, reducing the equipment performance loss or failure that may be caused by sliding. At the same time, through the design of anti-disconnection connection, it also ensures that the relative positions of the right half magnetic ring 1 and the left half magnetic ring 2 always remain fixed and will not cause magnetic field disturbance or change due to relative sliding. Especially in precision instruments or magnetic field control applications, this stability is particularly crucial and can ensure the long-term stable operation of the equipment.

Claims

1. A ring-shaped spliced ​​magnet assembly, characterized in that: The invention comprises a right half magnetic ring (1) and a left half magnetic ring (2) used to form an annular magnet with the right half magnetic ring (1); two symmetrical support plates (5) are installed on a plane wall of a side of the right half magnetic ring (1) close to the left half magnetic ring (2); an annular cavity (3) coinciding with the projection shape of the support plate (5) is arranged on the front and rear sides of the right half magnetic ring (1); a hollow cylinder (6) is installed inside the support plate (5); and a locking rod (7) is arranged on the side of the support plate (5) away from the right half magnetic ring (1). The hollow cylinder (6) is provided with an elastic screwing structure (8) which is rotatable, elastically retractable and connected to the back of the locking rod (7). Two symmetrical cross-cut grooves (10) are provided on the outer wall of the left half magnetic ring (2) close to the right half magnetic ring (1). The left half magnetic ring (2) is provided with a rectangular cut-out portion (9) which is interconnected with the cross-cut-out grooves (10). The locking rod (7) enters the rectangular cut-out portion (9) and is plugged into the inner wall of one side of the rectangular cut-out portion (9).

2. The annular spliced ​​magnet assembly according to claim 1, characterized in that: A plurality of wing plates (4) are installed at the top of the right half magnetic ring (1) and the left half magnetic ring (2); an arc wall (401) is arranged on the outer wall surface of the wing plate (4) close to the central axis of the magnet assembly; and the diameter of the arc wall (401) is the same as the inner diameter of the right half magnetic ring (1) and the left half magnetic ring (2).

3. The annular spliced ​​magnet assembly according to claim 2, characterized in that: Through holes are provided on both sides of the surface of the wing plate (4).

4. The annular spliced ​​magnet assembly according to claim 1, characterized in that: Circular protrusions (701) are installed on both sides of the back of the locking rod (7), and two circular inner grooves (901) are provided on the inner wall of one side of the rectangular cut-out portion (9). The extension line of the center connection line of the two circular inner grooves (901) intersects with the extension line of the central axis of the magnet assembly to form an acute angle.

5. The annular spliced ​​magnet assembly according to claim 1, characterized in that: The elastic screwing structure (8) comprises a central shaft (801) slidably mounted inside the hollow cylinder (6), a rotating cylinder (803) integrally formed at one end of the central shaft (801) and connected to the back of the locking rod (7), and a hexagonal head (802) fixed at the other end of the central shaft (801); a limit spring (804) is fixed on the inner wall of one side of the hollow cylinder (6); and one end of the limit spring (804) is fixedly connected to the outer wall of one side of the rotating cylinder (803).

6. The annular spliced ​​magnet assembly according to claim 5, characterized in that: The limit spring (804) and the central shaft (801) are coaxially mounted, the outer diameter of the rotating cylinder (803) is equal to the inner diameter of the hollow cylinder (6), and the outer diameter of the central shaft (801) is smaller than the outer diameter of the rotating cylinder (803).

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