Surface type permanent magnet structure

Abstract

The utility model belongs to the technical field of motors, and particularly relates to a surface type permanent magnet structure which comprises a protective sleeve, a lower stop block is fixedly mounted on the bottom surface of the protective sleeve, an upper baffle is arranged on the top surface of the protective sleeve, and through holes are formed in the lower stop block and the upper baffle; the multiple mounting grooves are formed in the inner side wall of the protective sleeve, and permanent magnets are movably connected in the multiple mounting grooves in a sleeved mode; the mounting assemblies are arranged on the upper baffle and used for fixing a plurality of permanent magnets, each mounting assembly comprises a top hole, the top holes are formed in the top faces of the permanent magnets, annular inner grooves are formed in the inner side walls of the top holes, two connecting grooves are formed in the top holes, the two connecting grooves communicate with the annular inner grooves, and a sleeve rod is rotationally mounted on the upper baffle; when the permanent magnet is installed, the permanent magnet is sleeved with the installation groove, and after the permanent magnet is sleeved with the installation groove, the lower positioning column can be connected with the lower positioning hole in the bottom face of the permanent magnet in a sleeved mode to assist in fixing the permanent magnet.

Description

Technical Field

[0001] This utility model belongs to the field of motor technology, and in particular relates to a surface permanent magnet structure. Background Technology

[0002] Among high-speed permanent magnet motors, surface-mounted high-speed permanent magnet motors are the most commonly used. The permanent magnets in surface-mounted high-speed permanent magnet motors are usually tile-shaped, typically installed inside a protective sleeve, and attached to the outer surface of the rotor core. The permanent magnet can be a single integral structure or composed of multiple magnets.

[0003] Existing permanent magnets are usually installed in a protective sleeve with glue. However, the device generates heat during use, which causes the glue's adhesive strength to gradually decrease. Eventually, the permanent magnets detach from the rotor core and collide with the stator due to the centrifugal force of the rotor's rotation, leading to motor failure. In view of this, we propose a surface-mounted permanent magnet structure. Utility Model Content

[0004] The purpose of this invention is to provide a surface-mount permanent magnet structure to solve the problems mentioned in the background art.

[0005] In view of this, the present invention provides a surface-type permanent magnet structure, comprising:

[0006] A protective cover, wherein a lower stop block is fixedly installed on the bottom surface of the protective cover, and an upper baffle is provided on the top surface of the protective cover, and through holes are provided on both the lower stop block and the upper baffle.

[0007] Multiple mounting slots are provided on the inner sidewall of the protective sleeve, and a permanent magnet is movably fitted into each of the multiple mounting slots.

[0008] Multiple sets of mounting components are arranged on an upper baffle and used to fix multiple permanent magnets. Each mounting component includes a top hole, which is opened on the top surface of the permanent magnet. An annular inner groove is formed on the inner side wall of the top hole. Two connecting grooves are provided on the top hole and are connected to the annular inner groove. A sleeve rod is rotatably mounted on the upper baffle. Both sides of the sleeve rod are fixedly mounted with ferrules. The sleeve rod is movably sleeved with the top hole. The two ferrules are arranged in the annular inner groove.

[0009] Multiple sets of limiting components are installed on the protective sleeve and used to limit multiple sleeve rods. During installation of the permanent magnet, the permanent magnet is fitted into the mounting groove. After the permanent magnet is fitted into the mounting groove, the lower positioning pin engages with the lower positioning hole on the bottom surface of the permanent magnet to assist in fixing the permanent magnet. After the permanent magnet is installed in the mounting groove, the upper baffle is installed on the protective sleeve. The upper baffle is positioned and installed by the cooperation of multiple lower positioning holes and multiple upper positioning holes. Simultaneously with the upper baffle being installed on the protective sleeve, the sleeve rod is fitted into the top hole. After the sleeve rod is fitted into the top hole, the retaining sleeve enters the annular inner groove through the connecting groove. At this point, rotating the sleeve rod will cause the sleeve to misalign with the connecting groove. The annular inner groove and the sleeve will then cooperate to initially fix the upper baffle on the protective sleeve. After the pin is inserted into the sleeve, the first insertion hole, and the second insertion hole, the sleeve rod will be limited. When the sleeve rod is limited, the sleeve and the connecting groove will remain misaligned, thus preventing the sleeve rod from rotating and causing the sleeve to shift. This enhances the fixation and stability of the upper baffle and the permanent magnet when installed on the protective sleeve. This installation method is not only quick and convenient, but also has strong fixation and makes it easy to disassemble the permanent magnet. It is quite practical. By setting the installation groove, it is convenient for the rotating shaft to pass through the installation groove during installation.

[0010] In the above technical solution, the limiting component further includes a first insertion hole, which is opened on the outer side wall of the permanent magnet. The outer side wall of the protective sleeve is provided with a second insertion hole. The first insertion hole, the second insertion hole, and one of the sleeves are movably connected with the same pin. After the pin is sleeved in the sleeve, the first insertion hole, and the second insertion hole, the sleeve rod will be limited. When the sleeve rod is limited, the sleeve and the connecting groove will be kept in a misaligned state, thereby preventing the sleeve rod from rotating and causing the sleeve to shift. This enhances the fixation and stability of the upper stop block and the permanent magnet when installed on the protective sleeve.

[0011] Furthermore, in the above technical solution, the top surface of the sleeve rod is provided with an adjustment groove, which is a cross-shaped groove. Using a tool to rotate the adjustment groove facilitates the rotation of the sleeve rod, thereby enhancing the convenience of rotating the sleeve rod.

[0012] In the above technical solution, furthermore, the bottom surface of each of the permanent magnets is provided with a lower positioning hole, and the top surface of the lower block is fixedly installed with a plurality of lower positioning posts. The plurality of lower positioning posts are respectively movably sleeved with the plurality of lower positioning holes, so that the upper baffle is installed on the protective sleeve. The upper baffle is positioned and installed by the cooperation of the plurality of lower positioning holes and the plurality of upper positioning holes.

[0013] In the above technical solution, further, a plurality of upper positioning posts are fixedly installed on the bottom surface of the upper baffle, and a plurality of upper positioning holes are opened on the top surface of the protective sleeve, and the plurality of upper positioning posts are respectively movably sleeved with the plurality of upper positioning holes.

[0014] In the above technical solution, furthermore, multiple locking posts are fixedly installed on the outer side wall of the protective sleeve, and multiple movable blocks are rotatably installed on the outer side wall of the upper baffle. Each of the multiple movable blocks has a C-shaped locking slot on one side, and the multiple C-shaped locking slots are respectively engaged with the multiple locking posts. When the movable block is rotated, the C-shaped locking slots are engaged with the locking posts, which enhances the fixation between the protective sleeve and the upper baffle during installation and plays an auxiliary fixing role.

[0015] In the above technical solution, the sleeve is rectangular and the connecting groove is rectangular. The specifications of the sleeve match the specifications of the connecting groove. By setting the connecting groove, the sleeve can enter or exit the annular inner groove through the connecting groove, thereby facilitating the installation and removal of the permanent magnet.

[0016] The beneficial effects of this utility model are:

[0017] 1. In this surface-mount permanent magnet structure, when installing the permanent magnet, the permanent magnet is fitted into the mounting groove. After the permanent magnet is fitted into the mounting groove, the lower positioning post will fit into the lower positioning hole on the bottom surface of the permanent magnet to assist in fixing the permanent magnet.

[0018] 2. In this surface-mounted permanent magnet structure, after the permanent magnet is installed in the mounting slot, the upper baffle is installed on the protective sleeve. Multiple lower positioning holes and multiple upper positioning holes assist in the positioning and installation of the upper baffle. Simultaneously, the sleeve rod is fitted into the top hole. After the sleeve rod is fitted into the top hole, the ferrule enters the annular inner groove through the connecting groove. Rotating the sleeve rod at this point causes the ferrule to misalign with the connecting groove. The engagement of the annular inner groove and the ferrule initially fixes the upper baffle on the protective sleeve. After the pin is fitted into the ferrule, the first insertion hole, and the second insertion hole, the sleeve rod is limited. When the sleeve rod is limited, the ferrule and the connecting groove remain misaligned, preventing the sleeve rod from rotating and causing displacement of the ferrule. This enhances the fixation and stability of the upper baffle and the permanent magnet when installed on the protective sleeve. This installation method is not only quick and convenient but also provides strong fixation and easy disassembly of the permanent magnet, making it quite practical. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0020] Figure 2 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the mounting groove structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the top hole structure of this utility model;

[0023] Figure 5 This is a schematic diagram of the top hole cross-sectional structure of this utility model;

[0024] Figure 6 This is a schematic diagram of the cross-sectional structure of the protective sleeve of this utility model;

[0025] Figure 7 This is a schematic diagram of the upper baffle structure of this utility model.

[0026] The markings in the diagram are as follows:

[0027] 1. Protective sleeve; 2. Lower stop block; 3. Upper baffle; 4. Mounting groove; 5. Permanent magnet; 6. Top hole; 7. Annular inner groove; 8. Connecting groove; 9. Sleeve rod; 10. Sleeve sleeve; 11. First insertion hole; 12. Second insertion hole; 13. Pin; 14. Adjustment groove; 15. Lower positioning post; 16. Lower positioning hole; 17. Upper positioning hole; 18. Upper positioning post; 19. Movable block; 20. C-type card slot; 21. Card post; 22. Through hole. Detailed Implementation

[0028] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0029] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0030] It should be noted that the terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and are not limited in number; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0031] It should be noted that in the description of this application, the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms 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 on the scope of protection of this application. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0032] It should be noted that, in this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0033] Example 1:

[0034] Please see Figures 1-7 As shown, this embodiment provides a surface-mount permanent magnet structure.

[0035] Includes: a protective sleeve 1, with a lower stop 2 fixedly installed on the bottom surface of the protective sleeve 1, and an upper baffle 3 on the top surface of the protective sleeve 1; both the lower stop 2 and the upper baffle 3 have through holes 22; multiple mounting slots 4 are formed on the inner wall of the protective sleeve 1, and permanent magnets 5 are movably fitted into each of the multiple mounting slots 4; multiple sets of mounting components are set on the upper baffle 3 and used to fix the multiple permanent magnets 5, each mounting component including a top hole 6, which is formed on the top surface of the permanent magnet 5, and the inner wall of the top hole 6 has an annular inner groove 7. The upper baffle 3 has two connecting grooves 8, which are connected to the annular inner groove 7. A sleeve rod 9 is rotatably installed on the upper baffle 3. Both sides of the sleeve rod 9 are fixedly installed with retaining sleeves 10. The sleeve rod 9 is movably sleeved with the top hole 6. The two retaining sleeves 10 are set in the annular inner groove 7. Multiple sets of limiting components are set on the protective sleeve 1 and are used to limit multiple sleeve rods 9. When installing the permanent magnet 5, the permanent magnet 5 is sleeved in the mounting groove 4. After the permanent magnet 5 is sleeved in the mounting groove 4, the lower positioning post 15 will position the bottom surface of the permanent magnet 5. Hole 16 is fitted to assist in fixing the permanent magnet 5. After the permanent magnet 5 is installed in the mounting groove 4, the upper baffle 3 is installed on the protective sleeve 1. The upper baffle 3 is positioned and installed by the cooperation of multiple lower positioning holes 16 and multiple upper positioning holes 17. At the same time as the upper baffle 3 is installed on the protective sleeve 1, the sleeve rod 9 will be fitted into the top hole 6. When the sleeve rod 9 is fitted into the top hole 6, the retaining sleeve 10 will enter the annular inner groove 7 through the connecting groove 8. At this time, the sleeve rod 9 is rotated. When the retaining sleeve 10 is misaligned with the connecting groove 8, it will be connected to the retaining sleeve 10 through the annular inner groove 7. The cooperation will initially fix the upper baffle 3 onto the protective sleeve 1. After the pin 13 is sleeved into the sleeve 10, the first insertion hole 11, and the second insertion hole 12, the sleeve rod 9 will be limited. When the sleeve rod 9 is limited, the sleeve 10 and the connecting groove 8 will be kept in a misaligned state, thereby preventing the sleeve rod 9 from rotating and causing the sleeve 10 to shift. This enhances the fixation and stability of the upper baffle 3 and the permanent magnet 5 when installed on the protective sleeve 1. This installation method is not only fast and convenient, but also has strong fixation and makes it easy to disassemble the permanent magnet 5, which is quite practical.

[0036] Example 2:

[0037] This embodiment provides a surface permanent magnet structure, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0038] The limiting component includes a first insertion hole 11, which is located on the outer side wall of the permanent magnet 5. A second insertion hole 12 is located on the outer side wall of the protective sleeve 1. The first insertion hole 11, the second insertion hole 12, and one of the sleeves 10 are movably connected to the same pin 13. After the pin 13 is fitted into the sleeve 10, the first insertion hole 11, and the second insertion hole 12, the sleeve rod 9 will be limited. When the sleeve rod 9 is limited, the sleeve 10 and the connecting groove 8 will be kept in a misaligned state, thereby preventing the sleeve rod 9 from rotating and causing the sleeve 10 to shift. This enhances the fixation and stability of the upper stop block 3 and the permanent magnet 5 when they are installed on the protective sleeve 1.

[0039] Example 3:

[0040] This embodiment provides a surface permanent magnet structure, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0041] The top surface of the sleeve rod 9 is provided with an adjustment groove 14, which is a cross-shaped groove. The adjustment groove 14 can be rotated with a tool to facilitate the rotation of the sleeve rod 9, thus enhancing the convenience of rotating the sleeve rod 9.

[0042] Example 4:

[0043] This embodiment provides a surface permanent magnet structure, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0044] Among them, the bottom surface of each of the multiple permanent magnets 5 is provided with a lower positioning hole 16, and the top surface of the lower stop block 2 is fixedly installed with multiple lower positioning posts 15. The multiple lower positioning posts 15 are respectively movably connected with the multiple lower positioning holes 16, and the upper baffle 3 is installed on the protective sleeve 1. The upper baffle 3 is positioned and installed by the cooperation of the multiple lower positioning holes 16 and the multiple upper positioning holes 17.

[0045] Example 5:

[0046] This embodiment provides a surface permanent magnet structure, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0047] Among them, multiple upper positioning posts 18 are fixedly installed on the bottom surface of the upper baffle 3, and multiple upper positioning holes 17 are opened on the top surface of the protective sleeve 1. The multiple upper positioning posts 18 are respectively movably connected to the multiple upper positioning holes 17.

[0048] Example 6:

[0049] This embodiment provides a surface permanent magnet structure, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0050] The sleeve 10 has a rectangular structure, and the connecting groove 8 has a rectangular groove. The specifications of the sleeve 10 match the specifications of the connecting groove 8. By setting the connecting groove 8, the sleeve 10 can enter or exit the annular inner groove 7 through the connecting groove 8, thereby facilitating the installation and removal of the permanent magnet 5.

[0051] Example 7:

[0052] This embodiment provides a surface permanent magnet structure, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0053] The outer wall of the protective sleeve 1 is fixedly equipped with multiple locking posts 21, and the outer wall of the upper baffle 3 is rotatably equipped with multiple movable blocks 19. Each of the multiple movable blocks 19 has a C-shaped locking slot 20 on one side. The multiple C-shaped locking slots 20 are respectively engaged with the multiple locking posts 21. When the movable block 19 is rotated, the C-shaped locking slot 20 is engaged with the locking post 21, which will enhance the fixation between the protective sleeve 1 and the upper baffle 3 during installation and play an auxiliary fixing role.

[0054] In use: When installing the permanent magnet 5, the permanent magnet 5 is fitted into the mounting groove 4. After the permanent magnet 5 is fitted into the mounting groove 4, the lower positioning post 15 will fit into the lower positioning hole 16 on the bottom surface of the permanent magnet 5 to help fix the permanent magnet 5.

[0055] After the permanent magnet 5 is installed in the mounting slot 4, the upper baffle 3 is installed on the protective sleeve 1. The upper baffle 3 is positioned and installed using the cooperation of multiple lower positioning holes 16 and multiple upper positioning holes 17. Simultaneously, the sleeve rod 9 is fitted into the top hole 6. After the sleeve rod 9 is fitted into the top hole 6, the retaining sleeve 10 enters the annular inner groove 7 through the connecting groove 8. At this point, rotating the sleeve rod 9 causes the retaining sleeve 10 to misalign with the connecting groove 8. The cooperation between the annular inner groove 7 and the retaining sleeve 10 then positions the upper baffle 3. 3. After initially fixing the sleeve 1 to the protective sleeve 1, the pin 13 is inserted into the sleeve 10, the first insertion hole 11, and the second insertion hole 12. At this time, the sleeve rod 9 will be limited. When the sleeve rod 9 is limited, the sleeve 10 and the connecting groove 8 will be kept in a misaligned state, thereby preventing the sleeve rod 9 from rotating and causing the sleeve 10 to shift. This enhances the fixation and stability of the upper stop block 3 and the permanent magnet 5 when installed on the protective sleeve 1. This installation method is not only fast and convenient, but also has strong fixation. It is also easy to disassemble the permanent magnet 5, which is quite practical.

[0056] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A surface-mount permanent magnet structure, characterized in that, include: A protective sleeve (1) is provided with a lower stop block (2) fixedly installed on the bottom surface of the protective sleeve (1) and an upper baffle (3) provided on the top surface of the protective sleeve (1). Both the lower stop block (2) and the upper baffle (3) are provided with through holes (22). Multiple mounting slots (4) are formed on the inner sidewall of the protective sleeve (1), and permanent magnets (5) are movably sleeved in each of the multiple mounting slots (4). Multiple sets of mounting components are set on the upper baffle (3) and used to fix multiple permanent magnets (5). The mounting components include a top hole (6), which is opened on the top surface of the permanent magnet (5). An annular inner groove (7) is opened on the inner side wall of the top hole (6). Two connecting grooves (8) are provided on the top hole (6). The two connecting grooves (8) are connected to the annular inner groove (7). A sleeve rod (9) is rotatably installed on the upper baffle (3). A retaining sleeve (10) is fixedly installed on both sides of the sleeve rod (9). The sleeve rod (9) is movably sleeved with the top hole (6). The two retaining sleeves (10) are set in the annular inner groove (7). Multiple sets of limiting components are provided on the protective sleeve (1) and are used to limit multiple sleeve rods (9).

2. The surface-mount permanent magnet structure according to claim 1, characterized in that, The limiting component includes a first insertion hole (11), which is located on the outer side wall of the permanent magnet (5). The outer side wall of the protective sleeve (1) is provided with a second insertion hole (12). The first insertion hole (11), the second insertion hole (12), and one of the sleeves (10) are movably connected to the same pin (13).

3. The surface-mount permanent magnet structure according to claim 1, characterized in that, The top surface of the sleeve (9) is provided with an adjustment groove (14), which is a cross-shaped groove.

4. The surface-mount permanent magnet structure according to claim 1, characterized in that, The bottom surface of each of the permanent magnets (5) is provided with a lower positioning hole (16), and the top surface of the lower stop block (2) is fixedly installed with a plurality of lower positioning posts (15), and the plurality of lower positioning posts (15) are respectively movably connected to the plurality of lower positioning holes (16).

5. A surface-mount permanent magnet structure according to claim 1, characterized in that, The bottom surface of the upper baffle (3) is fixedly equipped with multiple upper positioning posts (18), and the top surface of the protective sleeve (1) is provided with multiple upper positioning holes (17). The multiple upper positioning posts (18) are respectively movably connected to the multiple upper positioning holes (17).

6. A surface-mount permanent magnet structure according to claim 1, characterized in that, The outer side wall of the protective sleeve (1) is fixedly equipped with multiple locking posts (21), and the outer side wall of the upper baffle (3) is rotatably equipped with multiple movable blocks (19). Each of the multiple movable blocks (19) has a C-shaped card slot (20) on one side, and the multiple C-shaped card slots (20) are respectively engaged with the multiple locking posts (21).

7. A surface-mount permanent magnet structure according to claim 1, characterized in that, The sleeve (10) has a rectangular structure, the connecting groove (8) has a rectangular groove, and the specifications of the sleeve (10) match the specifications of the connecting groove (8).

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