Motor drive device

Abstract

A motor driving device, comprising a driving sub and a tool bit driving assembly, the tool bit driving assembly is arranged on the driving sub, the tool bit driving assembly comprises a driving sub connector connected with the driving sub and a tool bit connector arranged on the driving sub connector for connecting the tool bit, the driving sub connector and the tool bit connector are arranged in a detachable split structure, the driving sub connector has a body part connected with the driving sub and a clamping part connected with the tool bit connector, the clamping part is provided with a clamping limiting structure, the tool bit connector is provided with a connecting groove, the clamping limiting structure extends into the connecting groove and is detachably connected with the tool bit connector and limits and fixes the connection between the tool bit connector and the driving sub connector, through the cooperation of the clamping limiting structure and the connecting groove, the stable and reliable connection between the driving sub connector and the tool bit connector is realized, and the tool bit is convenient to disassemble and replace.

Description

Technical Field

[0001] This utility model relates to the technical field of hair cutting equipment, specifically to a motor drive device. Background Technology

[0002] In existing technologies, traditional motor-driven devices present numerous inconveniences in terms of blade connection and replacement. The blade and drive assembly are often integrated or have complex connection structures, making blade replacement cumbersome and time-consuming. This not only reduces equipment efficiency but also increases maintenance costs. Furthermore, some traditional devices lack effective limiting and fixing measures in their connection structures, allowing the blade to loosen or wobble during operation. This can affect hair cutting performance and even damage the equipment, shortening its lifespan. Summary of the Invention

[0003] In view of this, the present invention provides a motor drive device.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A motor drive device includes a drive unit and a cutter head drive assembly. The cutter head drive assembly is disposed on the drive unit. The cutter head drive assembly includes a drive unit connector connected to the drive unit and a cutter head connector disposed on the drive unit connector for connecting a cutter head. The drive unit connector and the cutter head connector are detachably separate. The drive unit connector has a body portion connected to the drive unit and a snap-fit ​​portion connected to the cutter head connector. The snap-fit ​​portion is provided with a snap-fit ​​limiting structure. The cutter head connector has a connecting groove. The snap-fit ​​limiting structure extends into the connecting groove and is detachably connected to the cutter head connector, limiting and fixing the connection between the cutter head connector and the drive unit connector.

[0005] Preferably, the snap-fit ​​limiting structure has a support part, a limiting connecting part, and a limiting structure. The limiting structure and the limiting connecting part are both disposed on the end face of the support part near the cutter head connector. The limiting structure is disposed on both sides of the limiting connecting part. The limiting connecting part and the limiting structure are detachably connected to the cutter head connector.

[0006] Preferably, the limiting structure is a limiting end protruding on one end face of the support near the cutter head connector. The limiting end is disposed on both sides of the limiting connection part. Both the limiting connection part and the limiting end extend into the connecting groove and are detachably connected to the cutter head connector.

[0007] Preferably, the limiting structure can also be a groove formed on the side end face of the support near the cutter head connector, and the cutter head connector is provided with a protruding end corresponding to the groove, the protruding end extending out of the groove and connecting with the support.

[0008] Preferably, both sides of the limiting connection portion protrude to form a snap-fit ​​end, a snap-fit ​​beam is provided between the inner walls of the two opposite sides of the connecting groove, a snap-fit ​​space is formed between the snap-fit ​​beam and the inner wall of the top of the connecting groove, the snap-fit ​​end extends into the snap-fit ​​space and snaps into the cutter head connector, and one side of the snap-fit ​​end abuts against the snap-fit ​​beam.

[0009] Preferably, a snap-fit ​​inclined surface is provided on the snap-fit ​​end, and a guide inclined surface corresponding to the snap-fit ​​inclined surface is provided on the snap-fit ​​beam, and the snap-fit ​​inclined surface and the guide inclined surface guide each other.

[0010] Preferably, a limiting groove is formed between the buckle beam and the wall of the connecting groove, the limiting end extends into the limiting groove and is limited to the cutter head connector, and at least one side of the limiting end forms a gap with the inner wall of the limiting groove.

[0011] Preferably, a gap is formed between the two sides of the limiting end and the inner wall of the limiting groove, and the gap on the side of the limiting end closer to the center of the connecting groove is larger than the gap on the side of the limiting end farther from the center of the connecting groove.

[0012] Preferably, the edge of the support portion forms an anti-detachment buckle rib, which abuts against the cutter head connector to limit the bottom of the cutter head connector.

[0013] Preferably, the limiting connection portion is further provided with a positioning reinforcement portion, the positioning reinforcement portion protruding and formed on one side of the center of the limiting connection portion, the positioning reinforcement portion being arranged along the height direction of the limiting connection portion, the connecting groove having a corresponding positioning reinforcement portion to the positioning groove, and the positioning reinforcement portion extending into the positioning groove to connect with the cutter head connector.

[0014] Preferably, the horizontal cross-sectional shape of the connecting groove is cross-shaped.

[0015] Preferably, the cutter head connector has a connecting groove and a disassembly port on the outside of the connecting groove, and the height of the bottom inner wall of the disassembly port is lower than the height of the bottom of the snap-fit ​​end.

[0016] The beneficial effects of this invention are as follows: Through the cooperation of the snap-fit ​​limiting structure and the connecting groove, a stable connection is achieved between the drive sub-connector and the cutter head connector, while also facilitating the disassembly and replacement of the cutter head. This split-type structural design not only improves the flexibility and maintainability of the device but also allows users to quickly replace different types of cutters according to different usage needs, thereby meeting diverse processing requirements. Furthermore, the snap-fit ​​limiting structure design ensures the stability and safety of the cutter head during high-speed rotation, effectively preventing problems such as cutter head detachment or loosening. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Appendix Figure 1 This is a schematic diagram of the structure of this utility model; Appendix Figure 2 This is a schematic diagram of the cutter head drive assembly; Appendix Figure 3 This is an exploded view of the cutter head drive assembly structure; Appendix Figure 4 This is a schematic diagram of the cutter head drive assembly from another angle; Appendix Figure 5 For the appendix Figure 4 Sectional view at point AA; Appendix Figure 6 For the appendix Figure 4 Sectional view at point BB; Appendix Figure 7 This is a schematic diagram of the cutter head connector. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] The present invention will now be further described with reference to the accompanying drawings.

[0021] This utility model provides the following technical solution: As attached Figure 1-7As shown, this utility model discloses a motor drive device, including a drive unit 1 and a cutter head drive assembly 2. The cutter head drive assembly 2 is mounted on the drive unit 1. The cutter head drive assembly 2 includes a drive unit connector 3 connected to the drive unit 1 and a cutter head connector 4 mounted on the drive unit connector 3 for connecting a cutter head. The drive unit connector 3 and the cutter head connector 4 are detachably separate structures. The drive unit connector 3 has a body part 5 connected to the drive unit 1 and a snap-fit ​​part 6 connected to the cutter head connector 4. The snap-fit ​​part 6 is provided with a snap-fit ​​limiting structure 7. The cutter head connector 4 has a connecting groove 8. The snap-fit ​​limiting structure 7 extends into the connecting groove 8 and is detachably connected to the cutter head connector 4, limiting and fixing the connection between the cutter head connector 4 and the drive unit connector 3. Specifically, in this design, the cooperation between the snap-fit ​​limiting structure 7 and the connecting groove 8 achieves a stable connection between the drive unit connector 3 and the cutter head connector 4, while also facilitating the disassembly and replacement of the cutter head. This split-type structural design not only improves the flexibility and maintainability of the device, but also allows users to quickly change different types of cutting heads according to different usage needs, thereby meeting diverse processing requirements. Furthermore, the snap-fit ​​limiting structure design ensures the stability and safety of the cutting head during high-speed rotation, effectively preventing problems such as cutting head detachment or loosening.

[0022] Furthermore, the snap-fit ​​limiting structure 7 has a support part 9, a limiting connecting part 10, and a limiting structure. Both the limiting structure and the limiting connecting part 10 are disposed on the end face of the support part 9 near the cutter head connector 4. The limiting structure is disposed on both sides of the limiting connecting part 10. Both the limiting connecting part 10 and the limiting structure are detachably connected to the cutter head connector 4. The limiting structure is a limiting end (11), which is disposed on both sides of the limiting connecting part 10. Both the limiting connecting part 10 and the limiting end 11 extend into the connecting groove 8 and are detachably connected to the cutter head connector 4. Specifically, in this embodiment, the support part 9 provides a stable support base for the snap-fit ​​limiting structure 7, while the limiting connecting part 10 serves as the main connecting part, extending into the connecting groove 8 to form a tight connection with the cutter head connector 4. The limiting ends 11 located on both sides of the limiting connection part 10 serve a further limiting and fixing function. They abut against the side walls of the connecting groove 8, effectively preventing the cutter head connector 4 from shaking or shifting during the connection process. This design not only enhances the connection strength between the snap-fit ​​limiting structure 7 and the cutter head connector 4, but also improves the stability and reliability of the entire motor drive device during operation.

[0023] Specifically, in other embodiments, the limiting structure can also be a groove formed on the end face of the support 9 near the cutter head connector 4. The cutter head connector 4 has a protruding end corresponding to the groove, which extends out of the groove and connects to the support 9. The matching design of the groove and the protruding end also achieves a stable connection between the drive sub-connector and the cutter head connector. When the protruding end on the cutter head connector extends into the groove on the support, a tight fitting relationship is formed between the two. This fitting not only restricts the movement of the cutter head connector in the horizontal direction, but also prevents it from disengaging in the vertical direction to a certain extent. The user only needs to apply appropriate force to make the protruding end disengage from the groove, thereby realizing the quick replacement of the cutter head. In addition, the matching of the groove and the protruding end also has a certain guiding effect, which can guide the cutter head connector to accurately mate with the drive sub-connector during the connection process, improving the efficiency and accuracy of assembly.

[0024] Furthermore, both sides of the limiting connection portion 10 protrude to form snap-fit ​​ends 12. A snap-fit ​​beam 13 is provided between the opposing inner walls of the two sides of the connecting groove 8. A snap-fit ​​space 14 is formed between the snap-fit ​​beam 13 and the top inner wall of the connecting groove 8. The snap-fit ​​end 12 extends into the snap-fit ​​space 14 and snaps into the cutter head connector 4. One side of the snap-fit ​​end 12 abuts against the snap-fit ​​beam 13. Specifically, in this embodiment, the mutual abutment design of the snap-fit ​​end 12 and the snap-fit ​​beam 13 further strengthens the connection stability between the drive sub-connector 3 and the cutter head connector 4. When the snap-fit ​​end 12 extends into the snap-fit ​​space 14, it not only forms a tight snap-fit ​​connection with the snap-fit ​​beam 13, but also effectively prevents the cutter head connector 4 from loosening or falling off when subjected to external force through the abutment action of its side. Compared with traditional threaded connections or welding methods, this snap-fit ​​connection method has higher connection efficiency and more convenient disassembly performance, making it faster and more convenient for users to replace or maintain the cutter head. Meanwhile, the design of the snap-fit ​​space 14 also provides sufficient room for the snap-fit ​​end 12 to move, ensuring the flexibility and reliability of the connection, and further improving the user experience of the entire motor drive device.

[0025] Furthermore, a snap-fit ​​inclined surface 15 is provided on the snap-fit ​​end 12, and a corresponding guide inclined surface 16 is provided on the snap-fit ​​beam 13. The snap-fit ​​inclined surface 15 and the guide inclined surface 16 are guided and engaged. Specifically, in this embodiment, when assembling the cutter head connector 4 and the drive sub-connector 3, the snap-fit ​​inclined surface 15 slides smoothly along the guide inclined surface 16. This guiding effect allows the snap-fit ​​end 12 to accurately and smoothly extend into the snap-fit ​​space 14, greatly reducing the assembly difficulty and improving the assembly efficiency. During device operation, the tight fit between the snap-fit ​​inclined surface 15 and the guide inclined surface 16 further enhances the stability of the snap-fit ​​connection. Even when the device is operating at high speed and subjected to various complex external forces, this guiding and engaging structure can effectively prevent the snap-fit ​​end 12 from accidentally coming out of the snap-fit ​​space 14, ensuring that the cutter head connector 4 and the drive sub-connector 3 always maintain a stable connection, thereby ensuring that the entire motor drive device can operate continuously and stably, providing reliable usage assurance for users.

[0026] Furthermore, a limiting groove 17 is formed between the buckle beam 13 and the wall of the connecting groove 8. The limiting end 11 extends into the limiting groove 17 and is in a limiting connection with the cutter head connector 4. At least one side of the limiting end 11 forms a gap with the inner wall of the limiting groove 17. Specifically, in this embodiment, the design of the limiting groove 17 provides precise positioning and stable support for the limiting end 11. When the limiting end 11 extends into the limiting groove 17, it forms a tight limiting connection with the cutter head connector 4, effectively preventing radial movement or deflection of the cutter head connector 4 during the connection process. At the same time, the gap formed between at least one side of the limiting end 11 and the inner wall of the limiting groove 17 ensures that the limiting end 11 can smoothly extend into the limiting groove 17, and also provides buffer space for minor deformations or vibrations that may occur during the operation of the device, avoiding damage to the connecting parts or loosening of the connection due to excessive compression. This design not only enhances the connection stability between the snap-fit ​​limiting structure 7 and the cutter head connector 4, but also improves the vibration resistance and operational stability of the entire motor drive device, further extending the service life of the device and providing users with a more reliable and durable product experience.

[0027] A gap is formed between the two sides of the limiting end 11 and the inner wall of the limiting groove 17. The gap on the side of the limiting end 11 closer to the center of the connecting groove 8 is larger than the gap on the side of the limiting end 11 farther from the center of the connecting groove 8. Specifically, in this embodiment, for ease of installation, the gap on the side of the limiting end closer to the center of the connecting groove is designed to be larger. This allows for easier insertion when the limiting end is inserted into the limiting groove, reducing resistance during installation and improving installation efficiency. The relatively smaller gap on the side farther from the center of the connecting groove better limits the range of movement of the limiting end within the limiting groove during device operation, further enhancing the stability of the connection. When the motor drive device operates at high speed, this gap design effectively prevents excessive displacement of the limiting end within the limiting groove due to centrifugal force and other factors, thereby ensuring that the connection between the cutter head connector and the drive sub-connector remains stable. This avoids problems such as cutter head detachment or unstable operation due to loose connection, providing a strong guarantee for the reliable operation of the entire motor drive device.

[0028] Furthermore, the edge of the support portion 9 forms an anti-detachment snap-fit ​​rib 18, which abuts against the bottom of the cutter head connector 4 to limit its movement. Specifically, in this embodiment, the anti-detachment snap-fit ​​rib 18 further strengthens the connection stability between the snap-fit ​​limiting structure 7 and the cutter head connector 4. After the drive sub-connector 3 and the cutter head connector 4 are assembled, the anti-detachment snap-fit ​​rib 18 tightly abuts against the bottom of the cutter head connector 4, forming an additional limiting barrier. This design effectively prevents the cutter head connector 4 from falling off or loosening when subjected to external forces in the vertical direction, further improving the stability and reliability of the entire connection. Especially when the motor drive device is running at high speed or subjected to severe vibration, the anti-detachment snap-fit ​​rib 18 plays a crucial role in ensuring that the cutter head connector 4 is always securely connected to the drive sub-connector 3, thereby ensuring the normal operation of the device and the user's safety. In addition, the anti-detachment buckle rib 18 design can ensure a stable limiting effect without causing too much obstruction to the assembly process, making it easier and more efficient for users to replace or maintain the cutter head.

[0029] Furthermore, the limiting connection portion 10 is also provided with a positioning reinforcement portion 19, which protrudes from one side of the center of the limiting connection portion 10 and is arranged along the height direction of the limiting connection portion 10. The connecting groove 8 has a corresponding positioning groove 20 for the positioning reinforcement portion 19, and the positioning reinforcement portion 19 extends into the positioning groove 20 to connect with the cutter head connector 4. Specifically, in this embodiment, when the limiting connection portion 10 is connected to the cutter head connector 4, the positioning reinforcement portion 19 precisely extends into the positioning groove 20, forming a tight fit with the cutter head connector 4. This design not only enhances the connection strength between the limiting connection portion 10 and the cutter head connector 4, but also effectively prevents misalignment or displacement during the connection process through positioning, ensuring the accuracy and stability of the connection. At the same time, the positioning reinforcement portion 19 is arranged along the height direction of the limiting connection portion 10, which also gives the connection stronger tensile strength in the vertical direction, further improving the stability and reliability of the entire motor drive device during operation.

[0030] Furthermore, the horizontal cross-sectional shape of the connecting groove 8 is cross-shaped. Specifically, in this embodiment, the horizontal cross-sectional shape of the connecting groove 8 is cross-shaped, so that the cutter head connector 4 and the main body 5 connected to the drive unit 1 are firmly joined together. This cross-shaped cross-sectional design not only increases the connection area and improves the stability of the connection, but also ensures that the connection structure maintains good stability when subjected to forces in all directions. Preferably, the horizontal cross-sectional shape of the connecting groove 8 is asymmetrically cross-shaped. In this way, when the cutter head connector and the drive unit connector are connected, the asymmetrical cross-shaped design can provide more accurate positioning, avoiding the installation direction confusion that may be caused by the symmetrical structure, making the installation process more convenient and efficient.

[0031] Furthermore, the cutter head connector 4 has a connecting groove 8 and a disassembly port 21 on the outside of the connecting groove 8. The height of the bottom inner wall of the disassembly port 21 is lower than the height of the bottom of the snap-fit ​​end 12. Specifically, in this embodiment, the design of the disassembly port 21 greatly facilitates the disassembly process of the cutter head connector 4 and the drive sub-connector 3. When the user needs to replace or maintain the cutter head, they can easily push the snap-fit ​​end 12 out of the snap-fit ​​space 14 by gently applying force through the disassembly port 21 with a suitable tool or finger, thereby achieving rapid separation of the cutter head connector 4 and the drive sub-connector 3. This design not only simplifies the disassembly process and improves disassembly efficiency, but also avoids damage to the connecting parts caused by excessive force or improper operation, extending the service life of the device. At the same time, the setting that the bottom inner wall of the disassembly port 21 is lower than the bottom height of the snap-fit ​​end 12 ensures that the snap-fit ​​end 12 can smoothly disengage from the snap-fit ​​space 14 during the disassembly process without being obstructed by the inner wall of the disassembly port, further improving the smoothness and convenience of disassembly.

[0032] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A motor drive device, comprising a drive unit (1) and a cutter head drive assembly (2), wherein the cutter head drive assembly (2) is disposed on the drive unit (1), characterized in that: The cutter head drive assembly (2) includes a drive sub connector (3) connected to the drive sub (1) and a cutter head connector (4) disposed on the drive sub connector (3) for connecting the cutter head. The drive sub connector (3) and the cutter head connector (4) are detachably split structures. The drive sub connector (3) has a snap-fit ​​part (6) connected to the cutter head connector (4). The snap-fit ​​part (6) is provided with a snap-fit ​​limiting structure (7). The cutter head connector (4) has a connecting groove (8). The snap-fit ​​limiting structure (7) extends into the connecting groove (8) and is detachably connected to the cutter head connector (4) to limit and fix the connection between the cutter head connector (4) and the drive sub connector (3).

2. The motor drive device according to claim 1, characterized in that: The snap-fit ​​limiting structure (7) has a support part (9), a limiting connection part (10) and a limiting structure. The limiting structure and the limiting connection part (10) are both disposed on the side end face of the support part (9) near the cutter head connector (4). The limiting structure is disposed on both sides of the limiting connection part (10). The limiting connection part (10) and the limiting structure are detachably connected to the cutter head connector (4).

3. The motor drive device according to claim 2, characterized in that: The limiting structure is a limiting end (11) protruding on one side end face of the support part (9) near the cutter head connector (4). The limiting end (11) is provided on both sides of the limiting connection part (10). The limiting connection part (10) and the limiting end (11) both extend into the connecting groove (8) and are detachably connected to the cutter head connector (4).

4. The motor drive device according to claim 1, characterized in that: The limiting structure can also be a recessed groove formed on one end face of the support (9) near the cutter head connector (4), and the cutter head connector (4) is provided with a protruding end corresponding to the groove, the protruding end extending out of the groove and connecting with the support (9).

5. The motor drive device according to claim 3, characterized in that: Both sides of the limiting connection part (10) protrude to form a snap-fit ​​end (12). A snap-fit ​​beam (13) is provided between the inner walls of the two sides of the connecting groove (8). A snap-fit ​​space (14) is formed between the snap-fit ​​beam (13) and the inner wall of the top of the connecting groove (8). The snap-fit ​​end (12) extends into the snap-fit ​​space (14) and snaps with the cutter head connector (4). One side of the snap-fit ​​end (12) abuts against the snap-fit ​​beam (13).

6. The motor drive device according to claim 5, characterized in that: The buckle end (12) is provided with a buckle inclined surface (15), and the buckle beam (13) is provided with a guide inclined surface (16) corresponding to the buckle inclined surface (15). The buckle inclined surface (15) and the guide inclined surface (16) are guided and engaged, and at least one end is an inclined surface for guiding engagement.

7. The motor drive device according to claim 5, characterized in that: A limiting groove (17) is formed between the buckle beam (13) and the groove wall of the connecting groove (8). The limiting end (11) extends into the limiting groove (17) and is limited to the blade connector (4). At least one side of the limiting end (11) forms a gap with the inner wall of the limiting groove (17).

8. The motor drive device according to claim 7, characterized in that: The two sides of the limiting end (11) and the inner wall of the limiting groove (17) form a gap, and the gap on the side of the limiting end (11) closer to the center of the connecting groove (8) is greater than the gap on the side of the limiting end (11) away from the center of the connecting groove (8).

9. The motor drive device according to claim 2, characterized in that: The edge of the support part (9) forms an anti-detachment buckle rib (18), which abuts against the cutter head connector (4) and limits the bottom of the cutter head connector (4).

10. The motor drive device according to claim 2, characterized in that: The limiting connection part (10) is also provided with a positioning reinforcement part (19). The positioning reinforcement part (19) protrudes and is formed on one side of the center of the limiting connection part (10). The positioning reinforcement part (19) is arranged along the height direction of the limiting connection part (10). The connecting groove (8) has a corresponding positioning reinforcement part (19) to the positioning groove (20). The positioning reinforcement part (19) extends into the positioning groove (20) and connects with the cutter head connector (4).

11. The motor drive device according to claim 10, characterized in that: The horizontal cross-section of the connecting groove (8) is arranged in a cross shape.

12. The motor drive device according to claim 5, characterized in that: The cutter head connector (4) has a connecting groove (8) and a disassembly port (21) on the outside of the connecting groove (8). The height of the bottom inner wall of the disassembly port (21) is lower than the height of the bottom of the snap-on end (12).

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