Coreless brushless motor stator structure for cooking medical equipment

Abstract

The utility model discloses a digestible hollow cup brushless motor stator structure for medical equipment, which comprises a cylindrical punching sheet, a coil winding, a wiring board, an insulating washer, an I-shaped sealing sleeve and copper needles, the wiring board is provided with a plurality of copper needle plugging holes at intervals, one end of each copper needle penetrates through the corresponding copper needle plugging hole, and the other end of each copper needle penetrates through the corresponding insulating washer. A lead of the coil winding is connected to the copper needle, the coil winding is sleeved in the middle of the sealing sleeve, and the sealing sleeve seals the inner side face of the coil winding. According to the utility model, the sealing sleeve can completely wrap the whole stator assembly, liquid can be prevented from entering the coil winding, and the sealing performance is strong. According to the utility model, the coil part cannot be damaged in the high-temperature cooking sterilization process of the stator.

Description

A hollow cup brushless motor stator structure for a boilable medical device Technical Field

[0001] This utility model relates to a hollow cup brushless motor stator, and particularly to a hollow cup brushless motor stator structure for medical devices that can be boiled. Background Technology

[0002] The coils of existing hollow cup motors are generally fixed by brushing or dipping in glue, which cannot completely encapsulate the coils. However, some medical devices require high-temperature sterilization. If the motor stator is fixed by brushing or dipping in glue, water may enter the coils during the sterilization process, causing damage to the motor. Summary of the Invention

[0003] To overcome the shortcomings and deficiencies of existing technologies, the purpose of this utility model is to provide a sterilizable hollow cup brushless motor stator structure for medical devices. Medical-grade materials are used for injection molding to encapsulate the stator coil and bonding wire sections, ensuring that the coil section is not damaged during high-temperature sterilization.

[0004] The objective of this utility model is achieved through the following technical solution: a stator structure for a hollow cup brushless motor for medical devices that can be boiled, comprising cylindrical laminations, coil windings, a terminal block, insulating washers, an I-shaped sealing sleeve, and copper needles. The terminal block has multiple copper needle insertion holes spaced apart. One end of each copper needle passes through one of these holes, and the lead wire of the coil winding is connected to the copper needle. The coil winding is fitted onto the middle of the sealing sleeve, which seals the inner surface of the coil winding. The sealing sleeve provides complete internal enclosure of the entire stator assembly, preventing liquid from entering the coil winding and ensuring strong sealing performance.

[0005] As an improvement to the stator structure of the hollow cup brushless motor for boilable medical devices of this utility model, the insulating washer is disposed between the terminal block and the coil winding, and the cylindrical lamination is sleeved on the outer side of the coil winding, with the edge of the insulating washer tightly attached to the cylindrical lamination. The insulating washer can seal the gap between the terminal block and the cylindrical lamination, improving the sealing effect.

[0006] As an improvement to the stator structure of the hollow cup brushless motor for medical devices that can be boiled, the sealing sleeve has a middle sleeve, a left wrapping part and a right wrapping part. The middle sleeve, the left wrapping part and the right wrapping part are integrally injection molded. The coil winding is sleeved on the outside of the middle sleeve. The left wrapping part is in close contact with the terminal block. The right wrapping part is in close contact with the cylindrical lamination and the coil winding.

[0007] As an improvement to the stator structure of the hollow cup brushless motor for boilable medical devices of this invention, the other end of the copper needle protrudes from the left wrapping part. The copper needle and the left wrapping part are tightly connected, with no gap between them.

[0008] As an improvement to the stator structure of the hollow cup brushless motor for boilable medical equipment of this utility model, the copper needle has a terminal and a connecting end. The diameter of the terminal is smaller than the diameter of the connecting end. The terminal is inserted through the copper needle insertion hole and welded to the lead wire of the coil winding. The connecting end is exited from the left wrapping part.

[0009] The beneficial effects of this invention are as follows: the sealing sleeve of this invention can achieve a complete internal enclosure of the entire stator assembly, preventing liquid from entering the coil windings and providing strong sealing. This invention can ensure that the coil parts are not damaged during high-temperature sterilization of the stator. Attached Figure Description

[0010] Figure 1 is a cross-sectional view of this utility model;

[0011] Figure 2 is an exploded view of this utility model;

[0012] The attached diagram is labeled as follows: 1. Cylindrical lamination, 2. Coil winding, 3. Terminal block, 4. Insulating washer, 5. Sealing sleeve, 6. Copper needle, 7. Copper needle insertion hole, 8. Lead wire, 51. Intermediate sleeve, 52. Left wrapping part, 53. Right wrapping part, 61. Terminal, 62. Connecting end. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0014] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0015] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0016] As shown in Figures 1 and 2, a stator structure for a hollow cup brushless motor for boilable medical devices includes a cylindrical lamination 1, a coil winding 2, a terminal block 3, an insulating washer 4, an I-shaped sealing sleeve 5, and copper needles 6. The terminal block 3 has multiple copper needle insertion holes 7 spaced apart. One end of the copper needle 6 passes through a copper needle insertion hole 7, and the lead 8 of the coil winding 2 is connected to the copper needle 6. The coil winding 2 is fitted over the middle of the sealing sleeve 5, which seals the inner surface of the coil winding 2. The sealing sleeve 5 provides complete internal enclosure of the entire stator assembly, preventing liquid from entering the coil winding 2 and ensuring strong sealing performance.

[0017] Preferably, the insulating washer 4 is disposed between the terminal block 3 and the coil winding 2, and the cylindrical lamination 1 is sleeved on the outer side of the coil winding 2, with the edge of the insulating washer 4 tightly attached to the cylindrical lamination 1. The insulating washer 4 can seal the gap between the terminal block 3 and the cylindrical lamination 1, improving the sealing effect.

[0018] Preferably, the sealing sleeve 5 has a middle sleeve 51, a left wrapping part 52 and a right wrapping part 53. The middle sleeve 51, the left wrapping part 52 and the right wrapping part 53 are integrally injection molded. The coil winding 2 is sleeved on the outside of the middle sleeve 51. The left wrapping part 52 is tightly attached to the terminal block 3, and the right wrapping part 53 is tightly attached to the cylindrical lamination 1 and the coil winding 2.

[0019] Preferably, the other end of the copper needle 6 protrudes from the left wrapping part 52. The copper needle 6 and the left wrapping part 52 are tightly connected, with no gap between them.

[0020] Preferably, the copper needle 6 has a terminal 61 and a connecting end 62. The diameter of the terminal 61 is smaller than the diameter of the connecting end 62. The terminal 61 is inserted through the copper needle insertion hole 7 and soldered to the lead wire 8 of the coil winding 2. The connecting end 62 is inserted through the left wrapping part 52.

[0021] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and structure of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A stator structure for a hollow cup brushless motor used in a boilable medical device, characterized in that, It includes a cylindrical lamination, a coil winding, a terminal block, an insulating washer, an I-shaped sealing sleeve, and copper needles. The terminal block has multiple copper needle insertion holes spaced apart. One end of the copper needle passes through the copper needle insertion hole. The lead wire of the coil winding is connected to the copper needle. The coil winding is sleeved in the middle of the sealing sleeve, and the sealing sleeve seals the inner side of the coil winding.

2. The stator structure of the hollow cup brushless motor for boilable medical devices according to claim 1, characterized in that, The insulating washer is disposed between the terminal block and the coil winding, the cylindrical lamination is sleeved on the outer side of the coil winding, and the edge of the insulating washer is tightly attached to the cylindrical lamination.

3. The stator structure of the hollow cup brushless motor for boilable medical devices according to claim 2, characterized in that, The sealing sleeve has a middle sleeve, a left wrapping part and a right wrapping part, which are integrally injection molded. The coil winding is sleeved on the outside of the middle sleeve. The left wrapping part is in close contact with the terminal block, and the right wrapping part is in close contact with the cylindrical lamination and the coil winding.

4. The stator structure of the hollow cup brushless motor for boilable medical devices according to claim 3, characterized in that, The other end of the copper needle protrudes from the left wrapping part.

5. The stator structure of the hollow cup brushless motor for boilable medical devices according to claim 4, characterized in that, The copper needle has a terminal and a connecting end. The diameter of the terminal is smaller than the diameter of the connecting end. The terminal is inserted through the copper needle insertion hole and soldered to the lead wire of the coil winding. The connecting end is exited through the left wrapping part.

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