Tool bit assembly of bareheaded machine

Abstract

The utility model discloses a tool bit assembly of a bareheaded machine. The tool bit assembly comprises a tool bit frame, a main tool bit assembly and a plurality of auxiliary tool bit assemblies arranged around the main tool bit assembly. The main tool bit assembly is sunken downwards, the auxiliary tool bit assemblies are arranged in an inclined mode, and each auxiliary tool bit assembly comprises an auxiliary tool rest capable of swinging, a cutting unit and an elastic supporting frame. A linkage structure is arranged between every two adjacent auxiliary tool rests and comprises connecting pieces and linkage matching parts (such as abutting grooves), the connecting pieces extend into the linkage matching parts to form mechanical linkage, and all the auxiliary tool rests and the linkage matching parts form a closed linkage ring through the alternately-arranged connecting pieces to achieve synchronous swing. A main tool rest of the main tool bit assembly is in linkage lifting with an auxiliary tool rest through a driving block, a center disc and an elastic arm split type design is adopted for an elastic supporting frame, and a flexible swing structure is arranged at the bottom of a tool bit frame to be matched with the head curved surface. According to the scheme, the shaving fitting degree is improved through the linkage structure, the elastic supporting frame can be independently replaced, the overall structure is designed in a modular mode, and high efficiency and maintenance convenience are achieved.

Description

Technical Field

[0001] This utility model relates to the field of shaving device technology, and in particular to a shaving head assembly for a bald head machine. Background Technology

[0002] In the field of hair trimming technology, the design of the shaving head assembly of a bald shaver is crucial to the shaving effect and user experience.

[0003] The applicant's earlier application CN220534270U discloses a solution that achieves independent floating functions for blade head one and blade head two by independently equipping each blade head with a floating frame and a blade holder, thus solving the defect that the suspension frame cannot be replaced individually. However, this structure still has limitations: although the blade holders of each blade head two can swing independently to adapt to local head shapes, there is a lack of a coordinated linkage mechanism. During the shaving process of complex head shapes (such as areas with alternating concave and convex surfaces), independent floating may lead to differences in the swing angle of adjacent blade heads two, affecting the overall fit and thus reducing shaving efficiency and comfort. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings and deficiencies of the existing technology and to provide a scissor head assembly for a scissor machine.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a balm head assembly, comprising a head holder, a main head assembly disposed at the center of the head holder, and a plurality of auxiliary head assemblies disposed on the head holder and surrounding the main head assembly. The main head assembly is recessed downward relative to the auxiliary head assemblies. Each auxiliary head assembly is inclined toward the main head assembly. Each head assembly includes a secondary blade holder pivotally connected to the head holder and capable of swinging toward or away from the main head assembly, and a cutting unit mounted on the secondary blade holder and capable of moving up and down relative to the secondary blade holder. An elastic support frame connected to the secondary tool post is provided so that when the secondary tool post swings away from the main tool head assembly, the elastic support frame provides a restoring force for the secondary tool post to swing toward the main tool head assembly. A linkage structure is provided between adjacent secondary tool posts. The linkage structure includes: a connector at one end of the secondary tool post; and a linkage engagement part at the other end of the adjacent secondary tool post. The connector extends into the linkage engagement part to form a mechanical linkage. All secondary tool posts form a closed linkage loop through the alternating arrangement of the connector and the linkage engagement part, so that when any secondary tool post swings, the other secondary tool posts swing synchronously.

[0006] As a preferred technical solution of this utility model, each secondary tool holder has connecting parts and linkage mating parts alternately arranged at both ends, and the connecting parts and linkage mating parts of adjacent secondary tool holders correspond one-to-one to form a cyclic linkage.

[0007] As a preferred technical solution of this utility model, two adjacent secondary tool holders form a set of linkage units. Both ends of one secondary tool holder are provided with linkage mating parts, and both ends of the other secondary tool holder are provided with connecting parts. The connecting parts extend into the linkage mating parts of the adjacent linkage units.

[0008] As a preferred embodiment of this utility model, the linkage mating part is an abutment groove, and the connecting member is configured as an abutment block.

[0009] As a preferred technical solution of this utility model, the main cutter head assembly includes a main cutter head that is floatingly mounted on the cutter head holder, a drive block is provided at one end of the secondary cutter head facing the main cutter head, a lifting engagement part is provided at the bottom of the main cutter head, and the drive block extends into the lifting engagement part to form a mechanical linkage. When the secondary cutter head swings, the drive block drives the main cutter head to float up and down through the lifting engagement part.

[0010] As a preferred embodiment of this utility model, the lifting mating part is a slot formed on the outer periphery of the main tool holder, and the end of the driving block extends into the slot.

[0011] As a preferred embodiment of this utility model, the elastic support frame includes a central disk and a plurality of elastic arms evenly distributed along the circumference of the central disk. The free ends of the elastic arms extend to the bottom of the corresponding secondary tool holder and abut against it. The central disk is fixed on the tool holder. The elastic arms undergo elastic deformation when the secondary tool holder swings, providing a restoring force for the secondary tool holder to swing toward the main tool holder assembly.

[0012] As a preferred technical solution of this utility model, the bottom of the cutter head holder is magnetically attached to a bottom cover, the bottom cover is a cavity with an opening, the opening is covered by a cover plate, a transmission mechanism is provided in the cavity, the main rotating shaft and several driven shafts on the transmission mechanism pass through the cover plate, and the main rotating shaft and several driven shafts are respectively connected to the corresponding cutting unit.

[0013] As a preferred embodiment of this utility model, the bottom of the shaving head holder is provided with a bottom cover, and a swing structure is provided below the bottom cover. The swing structure includes: a flexible sleeve fixed to the lower surface of the bottom cover, the flexible sleeve being made of elastic material; a flexible disc disposed above the flexible sleeve, the flexible disc being integrally formed or fixedly connected to the flexible sleeve; and a positioning bushing passing through the center of the flexible sleeve, the upper end of the positioning bushing being connected to the flexible disc, and the lower end being inserted into the mounting hole of the external shaving seat. The elastic deformation of the flexible sleeve and the flexible disc allows the shaving head holder and the bottom cover to swing around the axis of the positioning bushing to adapt to the curvature changes of the head during shaving.

[0014] As a preferred embodiment of the present invention, the main blade assembly includes a main blade holder and a cutting unit mounted on the main blade holder and movable up and down relative to the main blade holder; the cutting unit includes a blade net, a blade disposed below the blade net and rotatable relative to the blade net, a rotary joint disposed below the blade and used to connect and support the blade, and a compression spring connected between the rotary joint and the blade net.

[0015] Compared with the prior art, the beneficial effects of this utility model are: through the closed linkage ring design, when any one of the blade holders swings, the other blade holders follow synchronously, ensuring that the blade head assembly dynamically conforms to the head shape during the shaving process, avoiding local residue, and realizing synchronous linkage of multiple blade heads; the secondary blade holders cooperate with the slot of the main blade holder through the drive block to drive the main blade holder to float up and down, adapting to the concave and convex areas of the head, improving the cleanliness and comfort of the shave. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a cross-sectional view of the present invention;

[0018] Figure 3 This is a schematic diagram of the bottom structure of the cutter head holder in this utility model;

[0019] Figure 4 This is a schematic diagram of the bottom structure of the cutter head holder in this utility model;

[0020] Figure 5 This is a schematic diagram of the cooperative structure of two adjacent secondary cutter head assemblies in this utility model;

[0021] Figure 6 This is a schematic diagram of the cooperative structure of the secondary cutter head assembly and the main cutter head assembly in this utility model;

[0022] Figure 7 This is a schematic diagram of the elastic support frame in this utility model;

[0023] Figure 8 This is a schematic diagram of the cutting unit in this utility model;

[0024] Figure 9 This is a cross-sectional view of the cutting unit in this utility model;

[0025] Figure 10 This is a structural schematic diagram of the bottom cover portion of this utility model.

[0026] Reference numerals: 1. Cutter head holder; 2. Main cutter head assembly; 3. Secondary cutter head assembly; 4. Secondary cutter head holder; 5. Cutting unit; 6. Elastic support frame; 7. Linkage structure; 8. Connector; 9. Linkage mating part; 10. Main cutter head holder; 11. Drive block; 12. Lifting mating part; 13. Center plate; 14. Elastic arm; 15. Bottom cover; 16. Cover plate; 17. Transmission mechanism; 18. Main rotating shaft; 19. Driven shaft; 20. Flexible sleeve; 21. Flexible disc; 22. Positioning bushing; 23. Cutter head; 24. Blade; 25. Rotary joint; 26. Compression spring. Detailed Implementation

[0027] To make the technical means, creative features, and achieved objectives and effects of this utility model easier to understand, the present utility model is further described below with reference to specific embodiments and accompanying drawings. However, the following embodiments are merely preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described in the implementation plan without creative effort are all within the protection scope of this utility model.

[0028] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0029] like Figures 1 to 10 The illustrated sprue head assembly includes a sprue holder 1, a main sprue assembly 2 located at the center of the sprue holder 1, and a plurality of secondary sprue assemblies 3 disposed on the sprue holder 1 and surrounding the main sprue assembly 2. The main sprue assembly 2 is recessed downward relative to the secondary sprue assemblies 3. Each secondary sprue assembly 3 is inclined toward the main sprue assembly 2. Each secondary sprue assembly 3 includes a secondary sprue holder 4 pivotally connected to the sprue holder 1 and capable of swinging toward or away from the main sprue assembly 2, a cutting unit 5 mounted on the secondary sprue holder 4 and capable of moving up and down relative to the secondary sprue holder 4, and an elastic support frame 6 connected to the secondary sprue holder 4 so that when the secondary sprue holder 4 swings away from the main sprue assembly 2, the elastic support frame 6 provides a restoring force for the secondary sprue holder 4 to swing toward the main sprue assembly 2.

[0030] A linkage structure 7 is provided between adjacent secondary tool holders 4. The linkage structure 7 includes: a connector 8 at one end of the secondary tool holder 4; and a linkage engagement part 9 at the other end of the adjacent secondary tool holder 4. The connector 8 extends into the linkage engagement part 9 to form a mechanical linkage. All secondary tool holders 4 form a closed linkage loop through the alternating arrangement of the connector 8 and the linkage engagement part 9, so that when any secondary tool holder 4 swings, the other secondary tool holders 4 swing synchronously. In this embodiment, the linkage engagement part 9 is an abutment groove, and the connector 8 is configured as an abutment block.

[0031] Through the closed linkage design, when any one of the blade holders 4 swings, the other blade holders 4 follow synchronously, ensuring that the blade head assembly dynamically conforms to the head shape during the shaving process, avoiding local residue, and realizing synchronous linkage of multiple blade heads.

[0032] Option 1: Each secondary tool post 4 has alternating connecting parts 8 and linkage mating parts 9 at both ends. The connecting parts 8 and linkage mating parts 9 of adjacent secondary tool posts 4 correspond one-to-one, forming a cyclic linkage. Option 2: Two adjacent secondary tool posts 4 form a linkage unit. One secondary tool post 4 has linkage mating parts 9 at both ends, and the other secondary tool post 4 has connecting parts 8 at both ends. The connecting parts 8 extend into the linkage mating parts 9 of the adjacent linkage unit.

[0033] The main blade assembly 2 includes a main blade holder 10 that is floatingly mounted (preferably sliding and snapped together, but not limited to this method) on the blade holder 1. A drive block 11 is provided at one end of the secondary blade holder 4 facing the main blade holder 10. A lifting engagement part 12 is provided at the bottom of the main blade holder 10. The drive block 11 extends into the lifting engagement part 12 to form a mechanical linkage. When the secondary blade holder 4 swings, the drive block 11 drives the main blade holder 10 to float up and down through the lifting engagement part 12. In this embodiment, the lifting engagement part 12 is a slot formed on the outer periphery of the main blade holder 10. The end of the drive block 11 extends into the slot. The secondary blade holder 4 engages with the slot of the main blade holder 10 through the drive block 11, driving the main blade holder 10 to float up and down, adapting to the concave and convex areas of the head, improving shaving cleanliness and comfort, and realizing the dynamic lifting of the main blade holder 10.

[0034] The elastic support frame 6 includes a central disk 13 and a plurality of elastic arms 14 evenly distributed along the circumference of the central disk 13. The free ends of the elastic arms 14 extend to the bottom of the corresponding secondary blade holder 4 and abut against it. The central disk 13 is fixed on the blade holder 1. The elastic arms 14 undergo elastic deformation when the secondary blade holder 4 swings, providing a restoring force for the secondary blade holder 4 to swing toward the main blade assembly 2. In this embodiment, the elastic support frame 6 is preferably integrally formed. Through the design of the integrally formed elastic support frame 6, this solution simplifies the structure and reduces costs while significantly improving the durability, cleaning convenience and shaving stability of the blade assembly, solving the core problems of low reliability and difficult maintenance caused by the split structure in the prior art. Alternatively, it can be a split connection, that is, each elastic arm 14 can be detachably connected to the central disk 13. The connection methods include screws, snap-fit, plug-in and other methods.

[0035] The bottom of the cutter head holder 1 is magnetically attached to a bottom cover 15 (several magnets are provided on the bottom end face of the cutter head holder 1, and several magnets are provided on the upper part of the bottom cover 15, which are magnetically attached to the magnets; this is prior art and is not shown in the figure). The bottom cover 15 is a cavity with an opening, and a cover plate 16 covers the opening. A transmission mechanism 17 is provided inside the cavity. The main rotating shaft 18 and several driven shafts 19 on the transmission mechanism 17 pass through the cover plate 16. The main rotating shaft 18 and several driven shafts 19 are respectively connected to the corresponding cutting unit 5. The transmission mechanism 17 is disclosed in CN218476728U, which is prior art and therefore not described in detail. The cutter head holder 1 and the bottom cover 15 are magnetically attached, and the transmission mechanism 17 is integrated into the cavity of the bottom cover 15, which is convenient for disassembly and assembly, and easy for cleaning and maintenance. How the active rotating shaft and the driven shafts 19 are linked with the cutting unit 5 is prior art and therefore not described in detail.

[0036] The bottom of the shaving head holder 1 is provided with a bottom cover 15, and a swing structure is provided below the bottom cover 15. The swing structure includes: a flexible sleeve 20 fixed to the lower surface of the bottom cover 15, the flexible sleeve 20 (corrugated structure) is made of elastic material; a flexible disc 21 provided above the flexible sleeve 20, the flexible disc 21 is integrally formed or fixedly connected to the flexible sleeve 20; a positioning bushing 22 passing through the center of the flexible sleeve 20, the upper end of the positioning bushing 22 is connected to the flexible disc 21, and the lower end is inserted into the mounting hole of the external shaving seat; the elastic deformation of the flexible sleeve 20 and the flexible disc 21 allows the shaving head holder 1 and the bottom cover 15 to swing around the axis of the positioning bushing 22 to adapt to the curvature changes of the head during the shaving process.

[0037] The main blade assembly 2 includes a main blade holder 10 and a cutting unit 5 mounted on the main blade holder 10 and movable up and down relative to the main blade holder 10. The cutting unit 5 includes a blade mesh 23, a blade 24 disposed below the blade mesh 23 and rotatable relative to the blade mesh 23, a rotating joint 25 disposed below the blade 24 and used to connect and support the blade 24, and a compression spring 26 connected between the rotating joint 25 and the blade mesh 23. As to how the cutting unit 5 operates, this is prior art and will not be described in detail in this application.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples of this utility model and are not intended to limit it. Various changes and modifications can be made to this utility model without departing from its spirit and scope. All such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. A bald head machine cutter head assembly, comprising a cutter head holder (1), a main cutter head assembly (2) disposed at the center of the cutter head holder (1), and a plurality of auxiliary cutter head assemblies (3) disposed on the cutter head holder (1) and surrounding the main cutter head assembly (2), wherein the main cutter head assembly (2) is recessed downward relative to the auxiliary cutter head assemblies (3), each auxiliary cutter head assembly (3) is inclined toward the main cutter head assembly (2), each auxiliary cutter head assembly (3) includes an auxiliary cutter holder (4) pivotally connected to the cutter head holder (1) and capable of swinging toward or away from the main cutter head assembly (2), a cutting unit (5) mounted on the auxiliary cutter holder (4) and capable of moving up and down relative to the auxiliary cutter holder (4), and an elastic support frame (6) connected to the auxiliary cutter holder (4), wherein when the auxiliary cutter holder (4) swings away from the main cutter head assembly (2), the elastic support frame (6) provides a restoring force for the auxiliary cutter holder (4) to swing toward the main cutter head assembly (2), characterized in that: A linkage structure (7) is provided between adjacent secondary tool holders (4). The linkage structure (7) includes: a connector (8) at one end of the secondary tool holder (4); and a linkage engagement part (9) at the other end of the adjacent secondary tool holders (4). The connector (8) extends into the linkage engagement part (9) to form a mechanical linkage. All secondary tool holders (4) form a closed linkage loop through the alternating arrangement of the connector (8) and the linkage engagement part (9), so that when any secondary tool holder (4) swings, the other secondary tool holders (4) swing synchronously.

2. The optic head assembly according to claim 1, characterized in that: Each secondary tool holder (4) has a connector (8) and a linkage engagement part (9) alternately arranged at both ends. The connector (8) and the linkage engagement part (9) of adjacent secondary tool holders (4) correspond one-to-one to form a cyclic linkage.

3. The optic head assembly according to claim 1, characterized in that: Two adjacent secondary tool holders (4) form a linkage unit. One of the secondary tool holders (4) has linkage engagement parts (9) at both ends, and the other secondary tool holder (4) has connectors (8) at both ends. The connectors (8) extend into the linkage engagement parts (9) of the adjacent linkage unit.

4. The reamer head assembly according to any one of claims 1-3, characterized in that: The linkage part (9) is an abutment groove, and the connector (8) is configured as an abutment block.

5. The optic head assembly according to claim 1, characterized in that: The main cutter head assembly (2) includes a main cutter head (10) floatingly mounted on the cutter head holder (1). The secondary cutter head (4) has a drive block (11) at one end facing the main cutter head (10). The main cutter head (10) has a lifting engagement part (12) at its bottom. The drive block (11) extends into the lifting engagement part (12) to form a mechanical linkage. When the secondary cutter head (4) swings, the drive block (11) drives the main cutter head (10) to float up and down through the lifting engagement part (12).

6. The optic head assembly according to claim 5, characterized in that: The lifting mating part (12) is a slot opened on the outer periphery of the main tool holder (10), and the end of the drive block (11) extends into the slot.

7. The optic head assembly according to claim 1 or 5, characterized in that: The elastic support frame (6) includes a central disk (13) and a plurality of elastic arms (14) evenly distributed along the circumference of the central disk (13). The free ends of the elastic arms (14) extend to the bottom of the corresponding secondary tool holder (4) and abut against it. The central disk (13) is fixed on the tool holder (1). The elastic arms (14) undergo elastic deformation when the secondary tool holder (4) swings, providing the secondary tool holder (4) with a restoring force to swing toward the main tool assembly (2).

8. The optic head assembly according to claim 1, characterized in that: The bottom of the cutter head holder (1) is magnetically attached to a bottom cover (15). The bottom cover (15) is a cavity with an opening. The opening is covered by a cover plate (16). A transmission mechanism (17) is provided in the cavity. The main rotating shaft (18) and several driven shafts (19) on the transmission mechanism (17) pass through the cover plate (16). The main rotating shaft (18) and several driven shafts (19) are respectively connected to the corresponding cutting unit (5).

9. The optic head assembly according to claim 1 or 8, characterized in that: The bottom of the blade holder (1) is provided with a bottom cover (15), and a swing structure is provided below the bottom cover (15). The swing structure includes: a flexible sleeve (20) fixed to the lower surface of the bottom cover (15), the flexible sleeve (20) being made of elastic material; a flexible disc (21) provided above the flexible sleeve (20), the flexible disc (21) being integrally formed or fixedly connected to the flexible sleeve (20); a positioning bushing (22) passing through the center of the flexible sleeve (20), the upper end of the positioning bushing (22) being connected to the flexible disc (21), and the lower end being inserted into the mounting hole of the external blade holder; the elastic deformation of the flexible sleeve (20) and the flexible disc (21) allows the blade holder (1) and the bottom cover (15) to swing around the axis of the positioning bushing (22) to adapt to the curvature changes of the head during the shaving process.

10. The optic head assembly according to claim 1, characterized in that: The main blade assembly (2) includes a main blade holder (10) and a cutting unit (5) mounted on the main blade holder (10) and movable up and down relative to the main blade holder (10); the cutting unit (5) includes a blade net (23), a blade (24) located below the blade net (23) and rotatable relative to the blade net (23), a rotating joint (25) located below the blade (24) and used to connect and support the blade (24), and a compression spring (26) connected between the rotating joint (25) and the blade net (23).

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