Linear motor support structure

Abstract

The utility model discloses a linear motor support structure. Comprising an upper cover, a side plate, a mounting base and a stator core, the upper cover comprises two upper covers which are separated from each other and are flush with each other, the mounting base is a frame body with four closed edges, the mounting base is provided with an insertion port at the frame, the middle part of the stator core is provided with a first column, and two sides of the first column are respectively provided with a second column. And the stator iron core is provided with a third stand column which can be inserted into the insertion opening at the outer side of the second stand column. The upper cover, the side plates and the mounting base are integrally connected to form a closed loop, and half-surrounding design is omitted, so that a connecting structure formed by the upper cover, the side plates and the mounting base is more stable, mutual restriction exists, stress is more balanced, and safety during production and assembly is improved; meanwhile, the stator iron core and the magnet sheets are assembled in a plug-in mode, and locking of screws is not needed, so that assembly is simpler.

Description

Technical Field

[0001] This utility model relates to the field of linear motor technology, and in particular to a linear motor support structure. Background Technology

[0002] As is well known, linear motors, also called magnetic levitation motors, are a type of motor primarily used in the shaver industry. They rely on a stator coil and two sets of magnets mounted on the top cover. Using the principle of like poles repelling and unlike poles attracting, the two sets of shaver heads on the top cover are forced to repeatedly alternate. A schematic diagram of the specific structure is shown below. Figure 1 As shown, the main components include: a top cover 1A, a bracket side plate 2A, and a mounting base 3A. The cutting head and two magnet assemblies are mounted on the top cover 1A, and the stator coil is mounted on the mounting base. The overall structure is a semi-enclosed frame. During operation, the top cover and bracket side plate 2A provide support and connection for the two side structures. Therefore, during the production or assembly of the entire linear motor bracket frame, due to the influence of external forces or the structural strength of the bracket itself, there is no mutual restraint, leading to an imbalance of forces. This can easily cause deformation or breakage of the linear motor bracket (top cover), resulting in motor failure. Furthermore, the overall installation requires the use of screws for fastening. For example, when the stator core is mounted on the mounting base, it needs to be secured with screws, making installation relatively difficult. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a linear motor support structure.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A linear motor support structure includes a top cover, side plates, a mounting base, and a stator core. The top cover comprises two mutually spaced and flush top covers. Each top cover has a cutter head mounting end face at its top for mounting a cutter head, and a magnet at its bottom. Both ends of each top cover are connected to the mounting base via the side plates. The mounting base is a frame with closed sides. The mounting base has a mating slot at its own edge. The stator core has a first post in its middle for threading a coil. Second posts are respectively provided on both sides of the first post. A third post is provided on the outside of the second posts of the stator core, which can be inserted into the mating slot. The distance between the second posts is equal to the distance of the frame opening of the mounting base, so that the second posts can be inserted into the space formed by the mounting base and the top cover, and the stator core is located below the magnet.

[0006] Preferably, the upper cover has an embedding cavity on its side, and a silicon steel sheet is attached to the back of the magnet. There are at least two silicon steel sheets, which are stacked together and inserted into the embedding cavity. The upper cover has a notch at the magnet to expose the magnet.

[0007] Preferably, the outer surface of the silicon steel sheet is provided with a limiting groove, and the upper cover is provided with a through hole for receiving the insertion of the cutting head rod at the corresponding position of the limiting groove, so that after the cutting head rod is inserted through the through hole, the side of the cutting head rod is just embedded in the limiting groove, thereby preventing the silicon steel sheet from falling out of the embedding cavity.

[0008] Preferably, the side plate is provided with a through cavity.

[0009] Preferably, one side of the top cover is connected to the other side of the top cover via an elastic connector.

[0010] Preferably, the elastic connector is U-shaped.

[0011] Preferably, the top cover, side panels, mounting base, and elastic connectors are all made of PC or PPS material.

[0012] By adopting the above solution, the top cover, side plate, and mounting base of this utility model are set as an integral connection, making the connection of the three into a closed loop, eliminating the semi-enclosed design. This makes the connection structure formed by the top cover, side plate, and mounting base more stable, with mutual constraints and more balanced forces, improving safety during production and assembly. At the same time, the stator core and magnet plates are assembled in a plug-in manner, eliminating the need for screw locking, making assembly simpler. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of an existing structure in the background technology of this utility model.

[0014] Figure 2 This is a structural schematic diagram of an embodiment of the present utility model.

[0015] Figure 3 This is an exploded view of the structure of an embodiment of this utility model.

[0016] Figure 4 This is a front structural diagram of an embodiment of the present invention. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0018] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. They can refer to a mechanical connection or an electrical connection. They can refer to a direct connection or an indirect connection through an intermediate medium, and they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0020] like Figures 2 to 4 As shown, this embodiment provides a linear motor support structure, including an upper cover 1, side plates 2, a mounting base 3, and a stator core 4. The upper cover 1 consists of two mutually spaced and flush plates. Each upper cover 1 has a cutter head mounting end face 11 at its top for mounting a cutter head, and a magnet piece 5 at its bottom. Both ends of each upper cover 1 are connected to the mounting base 3 via the side plates 2. The mounting base 3 is a frame with all four sides closed. The mounting base 3 is located at its own edge. The stator core 4 has a pair of sockets 31. A first post 41 for threading the coil 100 is provided in the middle of the stator core 4. A second post 42 is provided on both sides of the first post 41. A third post 43 is provided on the outside of the second post 42 of the stator core 4, which can be inserted into the pair of sockets 31. The distance between the second posts 42 is equal to the distance of the frame opening of the mounting base 3, so that the second post 42 can be inserted into the space formed by the mounting base 3 and the upper cover 1, and the stator core 4 is located below the magnet piece 5.

[0021] In this embodiment, the top cover 1, side plate 2, and mounting base 3 are designed as a single integrated connection, forming a closed loop. The top cover 1 is connected to the side plates 2 at both ends, and the side plates 2 are connected to the mounting base 3. The mounting base 3 is a seamless frame interface, eliminating the need for a semi-enclosed design. This makes the connection structure of the top cover 1, side plate 2, and mounting base 3 more stable, with mutual constraints and more balanced forces, improving safety during production and assembly. Furthermore, the stator core 4 and magnet 5 are assembled using a plug-in method, eliminating the need for screws and simplifying assembly. Specifically, two second posts 42 are inserted into the frame opening of the mounting base 3, and a third post 43 is inserted into the plug-in opening 31. The second and third posts 42 form a clamping action, allowing the stator core 4 to be directly plugged into the mounting base 3, eliminating the need for screws. This assembly method eliminates the need for external tools such as screwdrivers.

[0022] Furthermore, to improve magnetic field utilization, this embodiment provides an embedding cavity 12 on the side of the upper cover 1. At least two silicon steel sheets 51 are attached to the back of the magnet 5, overlapping each other and inserted into the embedding cavity 12. A notch 13 is provided on the upper cover 1 at the location of the magnet 5, exposing the magnet 5. This design utilizes the silicon steel sheets 51 on the back of the magnet 5 to form a Heilbeck array, reducing iron loss and thus improving magnetic field utilization and the working efficiency of the two magnets 5. Furthermore, the mounting on the upper cover 1 employs a plug-in assembly method, directly attaching the silicon steel sheets 51 to the magnet 5 before inserting them into the embedding cavity, eliminating the need for screws.

[0023] Furthermore, because the upper cover 1 needs to swing back and forth during operation, in order to prevent the silicon steel sheet 51 from falling out of the embedding cavity, the outer side of the silicon steel sheet 51 in this embodiment is provided with a limiting groove 52. The upper cover 1 is provided with a through hole 14 for receiving the insertion of the rod of the cutter head at the corresponding position of the limiting groove 52. After the rod of the cutter head is inserted through the through hole 14, the side of the rod of the cutter head is just embedded in the limiting groove 52, thereby preventing the silicon steel sheet 51 from falling out of the embedding cavity 12. This design provides the installation position of the cutter head and also provides a limiting constraint on the silicon steel sheet 51 after the cutter head is installed. It achieves two goals at once and is very ingenious.

[0024] Furthermore, to enhance the flexibility of the side plate 2, a through cavity 21 is provided on the side plate 2 in this embodiment, making the side plate 2 into two thin plates. This satisfies both the reciprocating swing of the top cover 1 and the function of shock absorption and buffering. At the same time, the side end of the top cover 1 is connected to the side end of the other top cover 1 by an elastic connector 6. In this way, during the reciprocating swing of the top cover 1, the two top covers 1 will also have a mutual restraining effect, achieving a mutual balance of forces. That is to say, when the swing force of one top cover 1 is greater than that of the other top cover 1, the other top cover 1 will pull and restrain it from swinging too far. This is mainly because in actual operation, the swing directions of the two top covers 1 are opposite and not synchronous. Therefore, by relying on an elastic connector 6 as a connection, the mutual restraint and dynamic balance can be achieved.

[0025] In addition, the elastic connector 6 is U-shaped. The top cover 1, side plate 2, mounting base 3 and elastic connector 6 are all made of PC or PPS material. The main purpose of using this material is to meet the requirement of high toughness.

[0026] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A linear motor support structure, characterized in that: The device includes a top cover, side plates, a mounting base, and a stator core. The top cover consists of two spaced-apart and flush-mounted covers. Each top cover has a blade mounting end face at its top for mounting a blade tip, and a magnet at its bottom. Both ends of each top cover are connected to the mounting base via side plates. The mounting base is a frame with closed sides. The mounting base has a connector at its edge. The stator core has a first post in its middle for threading a coil. Second posts are located on both sides of the first post. A third post is located outside the second posts of the stator core and can be inserted into the connector. The distance between the second posts is equal to the distance of the frame opening of the mounting base, allowing the second posts to be inserted into the space formed by the mounting base and the top cover, and positioning the stator core below the magnet.

2. The linear motor support structure as described in claim 1, characterized in that: The upper cover has an embedding cavity on its side, and a silicon steel sheet is attached to the back of the magnet. There are at least two silicon steel sheets, which are stacked together and inserted into the embedding cavity. The upper cover has a notch at the magnet to expose the magnet.

3. The linear motor support structure as described in claim 2, characterized in that: The outer surface of the silicon steel sheet is provided with a limiting groove, and the upper cover is provided with a through hole for receiving the insertion of the rod of the cutter head at the corresponding position of the limiting groove, so that after the rod of the cutter head is inserted into the through hole, the side of the rod of the cutter head is just embedded in the limiting groove, thereby preventing the silicon steel sheet from falling out of the embedding cavity.

4. The linear motor support structure as described in claim 1, characterized in that: A through cavity is provided on the side plate.

5. A linear motor support structure as described in claim 1, characterized in that: The side end of the top cover is connected to the side end of another top cover by an elastic connector.

6. The linear motor support structure as described in claim 5, characterized in that: The elastic connector is U-shaped.

7. A linear motor support structure as described in claim 6, characterized in that: The top cover, side panels, mounting base, and elastic connectors are all made of PC or PPS material.

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