Shaving tool bit assembly and electric shaver

Abstract

The razor head assembly comprises a razor net (1) and a movable razor (2), the razor net comprises a razor net part (11) and a supporting part (12), the razor net part is arranged above the supporting part and connected with the supporting part, the movable razor extends into the supporting part and is arranged under the razor net part, a neck part (10) is arranged at the joint of the razor net part and the supporting part, and the neck part is connected with the supporting part. The edge of the shaving net part protrudes out of the neck part and forms an outer comb part (111), an outer shaving cavity (110) is formed in the outer comb part, and a blade (21) on the movable cutter extends into the outer shaving cavity. The shaving net part of the shaving tool bit assembly protrudes out of the neck part and forms the outer comb part, the blade extends into the outer comb part, body hair can be cut off when entering the outer comb part, the function that the edge of the shaving tool shaves long hair or long beards is achieved, and the shaving efficiency is high. And beards can be shaved cleanly by adopting the outer comb part.

Description

Technical Field

[0001] This invention relates to razor accessories, and more particularly to razor head assemblies and razors. Background Technology

[0002] The shaving head assembly is a crucial component of a shaver. The shaver body drives the shaving head assembly to rotate, enabling the shaving function. Currently, the main drawback of rotary shavers is insufficient shaving efficiency. This has been addressed by adding two or three shaving heads to improve efficiency. However, single-head, large-diameter shaving heads, due to their mesh structure, cannot remove long facial hair or body hair. The problem of rotary shavers' inability to remove long facial hair remains unresolved.

[0003] Existing shaver head assemblies generally include a foil, blades, and a blade holder. The blades are positioned between the foil and the blade holder. The foil includes an annular outer wall and an outer comb section. For example, in a shaver circular foil with publication number CN113172668A, the outer comb section protrudes from the annular outer wall. Figure 2 Body hair can enter the shaving net through the outer comb and be cut by the blade. Currently, the chamber formed by the outer comb is small, and the blade cannot extend into the chamber of the outer comb. The blade is only in the shaving track. Body hair enters the shaving track through the chamber of the outer comb and is cut by the blade. The outer comb only serves to comb the body hair. The blade is located directly below the top wall. It is not very effective to shave long beards or long body hair through the outer comb. At the same time, to shave short body hair, it is still necessary to make fine processing at the position directly above where the blade is located. The shaving efficiency of this type of shaving head assembly is low.

[0004] How to provide a razor head with a simple structure that can adapt to both short and long body hair is also a research subject for those skilled in the art. Summary of the Invention

[0005] This invention addresses the shortcomings of existing technologies by providing a shaving head assembly and an electric shaver.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: The shaving head assembly includes a foil and a moving blade. The foil includes a shaving foil section and a support section. The shaving foil section is located above and connected to the support section. The moving blade extends into the support section and is located directly below the shaving foil section. The connection between the shaving foil section and the support section is a neck. The edge of the shaving foil section protrudes from the neck and forms an outer comb section. The outer comb section has an outer shaving cavity inside, and the blade on the moving blade extends into the outer shaving cavity.

[0007] Preferably, the outer comb section includes a number of outer comb teeth, a circumferential array of multiple outer comb teeth, and outer comb entry pores are formed between adjacent outer comb teeth. All outer comb entry pores are connected to the outer shaving chamber.

[0008] Preferably, the outer comb teeth are V-shaped or U-shaped, with the upper ends of all the outer comb teeth on the same horizontal plane.

[0009] Preferably, the moving part includes a circular tool holder, which consists of at least two positioning blocks, each of which is equipped with a blade.

[0010] Preferably, the blade is an integral arc-shaped blade, which includes an upper connecting part, a lower connecting part, and a number of cutting edges. The cutting edges are V-shaped or U-shaped. The upper connecting part is connected to the lower connecting part through the cutting edges. The upper connecting part and the lower connecting part are parallel. A groove is formed between the upper connecting part, the lower connecting part, and the cutting edges. The blade is engaged with the positioning block through the groove.

[0011] Preferably, the blade is a flat blade that is inserted into the positioning block. All blades are radially evenly distributed on the blade holder. The shaving net section has an inner comb section with multiple elongated combing holes. The outer comb section surrounds the outer side of the inner comb section. The outer edge of the blade extends into the outer shaving chamber, and the inner edge of the blade faces the inner comb section and is located directly below it.

[0012] Preferably, the device also includes a positioning bracket and a drive shaft. The positioning bracket is fixed on the drive shaft, supports the blade holder below it and rotates synchronously with it, and the upper end of the drive shaft is axially positioned on the shaving screen.

[0013] Preferably, a positioning element for positioning is provided in the middle of the shaving mesh section, and a positioning hole is provided at the top of the drive shaft. The drive shaft is axially positioned by cooperating with the positioning element through the positioning hole.

[0014] Preferably, a positioning element is formed by a downward protrusion at the middle of the lower end face of the shaving mesh, and a groove is formed on the shaving mesh corresponding to the positioning element. A cover plate plug is installed on the groove, and a protrusion is provided on the lower end face of the cover plate plug, which is inserted into the groove.

[0015] Preferably, each positioning block is provided with a positioning groove, and the positioning bracket is a claw-shaped bracket. The positioning bracket includes a number of positioning claws equal to the number of positioning blocks. The upper end of the positioning claw is positioned on the positioning groove, and the lower end of the positioning claw is fixed on the drive shaft.

[0016] Preferably, the drive shaft has an outwardly protruding shaft limiting part in the middle, and the positioning bracket also includes a lower positioning part. The lower positioning part is fitted onto the drive shaft and fixedly connected to the shaft limiting part. Multiple positioning claws are integrally formed on the lower positioning part and evenly distributed around it. The top of the positioning claws in the positioning groove is bent outward horizontally to form an upper positioning part, which is engaged with the positioning groove.

[0017] Preferably, the device also includes a tool holder, which is detachably installed inside the support. A cutter frame is fixed inside the tool holder, and the drive shaft is axially positioned on the cutter frame. The lower end of the drive shaft extends out of the cutter frame, and the bottom of the drive shaft is provided with a shaft hole for connection with the drive source.

[0018] Preferably, the bottom inner wall of the tool holder is provided with a frame limiting part that cooperates with the positioning of the machine body. The frame limiting part protrudes radially from the inner wall of the tool holder and is annular in shape.

[0019] Preferably, the support part is cylindrical, the tool holder extends into the support part and engages with it, and a number of locking blocks are evenly distributed on the inner wall of the support part. The tool holder has a locking groove that corresponds to each locking block, and the locking blocks engage with the locking grooves.

[0020] Electric shaver, including shaver head assembly.

[0021] This invention, by adopting the above technical solutions, has significant technical effects: The shaving head assembly features a shaving mesh that protrudes from the neck and forms an outer comb. The blade extends into this outer comb, cutting the body hair as it enters. This allows for efficient shaving of long hairs or beards, utilizing the edge of the razor. The outer comb also ensures a clean shave. Attached Figure Description

[0022] Figure 1 This is an exploded view of the first type of blade structure and the shaving head assembly.

[0023] Figure 2 yes Figure 1 A schematic diagram of the assembled cross-sectional structure.

[0024] Figure 3 This is a schematic diagram of the moving blade structure.

[0025] Figure 4 This is a structural diagram of the positioning bracket.

[0026] Figure 5 It is the second structural form of the blade mesh.

[0027] Figure 6 It is the third structural form of the blade mesh.

[0028] Figure 7 This is a schematic diagram of the structure in which the drive shaft and positioning bracket are integrally formed.

[0029] Figure 8 This is an exploded view of the second type of blade structure and the shaving head assembly. The names of the body parts referred to by the numbers in the above attached diagrams are as follows: 1—Shaving net, 10—Neck, 11—Shaving net section, 12—Support section, 110—Outer shaving chamber, 111—Outer comb section, 112—Outer comb entry hole, 113—Inner comb section, 114—Inner comb entry hole, 115—Outer comb teeth, 116—Groove, 117—Positioning element, 121—Card block 2—Moving blade, 21—Insert blade, 22—Tool holder, 210—Positioning groove, 211—Upper connecting part, 212—Lower connecting part, 213—Cutting edge, 221—Positioning block, 2211—Positioning groove 3—Tool holder, 31—Slot, 32—Hollowed frame, 33—Frame limiting part 4—Positioning bracket, 41—Lower positioning part, 42—Upper positioning part, 43—Positioning claw 5—Drive shaft, 51—Positioning hole, 52—Shaft hole, 53—Shaft body limiting part 6—Cover plate plug Implementation

[0030] The following is in conjunction with the appendix Figure 1-8 The invention will be further described in detail with reference to the embodiments. Example 1

[0031] The shaving head assembly is an accessory for the shaving razor. The shaving head assembly includes a shaving foil 1 and a moving blade 2. In this embodiment, the shaving foil 1 is a single piece; in other embodiments, the shaving foil 1 can be formed as separate parts. The shaving foil 1 includes a shaving foil section 11 and a support section 12. The shaving foil section 11 is integrally formed on the support section 12, and the moving blade 2 extends into the support section 12 and is positioned directly below the shaving foil section 11. The shaving foil 1 serves two purposes: firstly, to prevent the moving blade 2 from injuring the skin during shaving, and secondly, to position the moving blade 2. The neck 10 is the connection between the shaving net part 11 and the support part 12. The edge of the shaving net part 11 protrudes from the neck 10 and forms an outer comb part 111. The outer comb part 111 has an outer shaving cavity 110 inside. The blade 21 on the moving blade 2 extends into the outer shaving cavity 110. The outer comb part 111 is used to comb the body hair, so that the body hair can enter the outer shaving cavity 110 in an orderly manner. Since the blade 21 extends into the outer shaving cavity 110, the body hair will be cut by the blade 21 as soon as it enters the outer shaving cavity 110. This realizes the function of shaving long beards or long hairs on the outer edge of the shaving head assembly. The outer comb part 111 can not only shave long beards, but also shave short beards cleanly.

[0032] The external comb section 111 includes a number of external comb teeth 115. The external comb teeth 115 are used to comb body hair, so that the moving blade 2 inside the external comb section 111 can cut the body hair. The multiple external comb teeth 115 are arranged in a circumferential array. All the external comb teeth 115 are evenly arranged. An external comb entry hole 112 is formed between adjacent external comb teeth 115. All external comb entry holes 112 are connected to the external shaving chamber 110. Body hair can smoothly enter the external shaving chamber 110 through the external comb entry holes 112.

[0033] The outer comb teeth 115 are V-shaped. The V-shaped outer comb teeth 115 make the outer comb part 111 form a protruding tip. The thickness of the outer comb part 111 gradually decreases from the inside to the outside. The outer comb part 111 can better comb body hair and at the same time facilitate the removal of body hair in areas with softer skin such as the armpits.

[0034] The moving blade 2 includes a ring-shaped blade holder 22. In this embodiment, the blade holder 22 is composed of four positioning blocks 221. In other embodiments, the blade holder 22 may also be composed of three positioning blocks 221. Each positioning block 221 is equipped with a blade 21. Since the outer comb portion 111 protrudes outward, in order to allow the blade 21 to be inserted into the outer comb portion 111, this split structure of the moving blade 2 facilitates the installation of the blade 21 into the outer shaving chamber 110.

[0035] The blade 21 is an integral arc-shaped blade, which includes an upper connecting part 211, a lower connecting part 212, and a number of cutting edges 213. The cutting edges 213 are V-shaped, which can quickly cut body hair. The upper connecting part 211 is connected to the lower connecting part 212 through the cutting edges 213. The upper connecting part 211 is connected to the upper end of the cutting edges 213, and the lower connecting part 2112 is connected to the lower end of the cutting edges 213. The upper connecting part 211 and the lower connecting part 212 are parallel. A slot 210 is formed between the positioning grooves 2211 of the upper connecting part 211, the lower connecting part 212, and the cutting edges 213. The blade 21 is engaged with the positioning block 221 through the slot 210.

[0036] The shaver head assembly also includes a positioning bracket 4 and a drive shaft 5. The positioning bracket 4 is integrally formed on the drive shaft 5, and the rotation of the drive shaft 5 can stably drive the positioning bracket 4 to rotate. Figure 7 As shown. The positioning bracket 4 is supported below the blade holder 22 and rotates synchronously with it. The positioning bracket 4 is engaged with the blade holder 22 and fixedly connected to it. The upper end of the drive shaft 5 is axially positioned on the shaving screen 11, and the lower end of the drive shaft 5 is connected to the drive source on the machine body, thus achieving axial positioning of the lower end of the drive shaft 5. The drive shaft 5 drives the blade holder 22 to rotate synchronously through the positioning bracket 4, and the blade holder 22 drives the blade 21 to rotate, thereby realizing the function of shaving body hair.

[0037] The middle part of the shaving mesh section 11 is provided with a positioning element 117 for positioning. The positioning element 117 is positioned and connected to the drive shaft 5. The top end of the drive shaft 5 is provided with a positioning hole 51. The drive shaft 5 is axially positioned by cooperating with the positioning element 117 through the positioning hole 51. The drive shaft 5 can rotate around the positioning element 117.

[0038] A positioning element 117 is formed by a downward protrusion at the middle of the lower end face of the shaving mesh part 11. The positioning element 117 is cylindrical in shape. A groove 116 is formed on the shaving mesh part 11 corresponding to the positioning element 117. A cover plate plug 6 is installed on the groove 116. A protrusion is provided on the lower end face of the cover plate plug 6. The protrusion is inserted into the groove 116. The cover plate plug 6 is used to cover the groove 116, improve the aesthetics of the shaving mesh part 11, and at the same time, the protrusion on the cover plate plug 6 can improve the strength of the positioning element 117, prevent the positioning element 117 from deforming, and improve the stability of the rotation of the drive shaft 5.

[0039] Each positioning block 221 is provided with a positioning groove 2211. The positioning bracket 4 is a claw-shaped bracket, and the positioning bracket 4 includes a number of positioning claws 43 equal to the number of positioning blocks 221. There are four positioning claws 43 and four positioning blocks 221. The upper end of the positioning claw 43 is positioned on the positioning groove 2211, and the lower end of the positioning claw 43 is fixed on the drive shaft 5. In this embodiment, the positioning claw 43 is integrally formed on the drive shaft 5. Figure 7 As shown. Example 2

[0040] Example 2 is basically the same as Example 1, except that the outer comb teeth 115 are U-shaped, such as... Figure 6 As shown. The blade portion 213 on the blade 21 is U-shaped, and the shape of the blade portion 213 matches the shape of the outer comb portion 115. Example 3

[0041] Example 3 is basically the same as Example 1, except that the blade 21 is a flat blade, and the blade 21 is engaged with the positioning block 221, as shown. Figure 8 The blades 21 are shown in the diagram. All blades 21 are radially evenly distributed on the blade holder 22. The shaving net section 11 has an inner comb section 113, and the space below the inner comb section 113 is an inner comb shaving chamber. The positioning block 221 is accommodated in the inner comb shaving chamber. The inner comb section 113 has a plurality of elongated inner comb entry holes 114, all of which are arranged in a circumferential array. The outer comb section 111 surrounds the outer side of the inner comb section 113, and the upper end face of the outer comb section 111 is flush with the end face of the inner comb section 113. The outer edge of the blade 21 extends into the outer shaving chamber 110, and the inner edge of the blade 21 faces the inner comb section 113 and is located directly below it. Some shorter body hairs enter through the inner comb entry holes 114. Example 4

[0042] Example 4 is basically the same as Example 1, 2 or 3, except that the positioning bracket 4 and the drive shaft 5 are separate parts, such as... Figure 1Alternatively, in configuration 8, there is a positioning bracket 4 and a drive shaft 5. The drive shaft 5 has an outwardly protruding shaft limiting part 53 in the middle. The positioning bracket 4 also includes a lower positioning part 41, which is fitted onto the drive shaft 5 and glued together with the shaft limiting part 53. Multiple positioning claws 43 are integrally formed on the lower positioning part 41 and evenly distributed around it. Figure 4 As shown, the top of the positioning claw 43 is bent outward horizontally to form an upper positioning part 42, which engages with the positioning groove 2211. Example 5

[0043] Example 5 is basically the same as Example 1, except that the shaving head assembly also includes a blade holder 3. The blade holder 3 is detachably installed in the support part 12. A hollow frame 32 is integrally formed inside the blade holder 3. The drive shaft 5 is axially positioned on the hollow frame 32, and the lower end of the drive shaft 5 extends out of the hollow frame 32. The bottom of the drive shaft 5 is provided with a shaft hole 52 for connecting to the drive source. The hollow frame 32 serves to support the drive shaft 5 and also facilitates the passage of some cut hair fragments.

[0044] The bottom inner wall of the tool holder 3 is provided with a frame limiting part 33 that is positioned and cooperates with the machine body. The frame limiting part 33 is integrally formed on the tool holder 3. The frame limiting part 33 protrudes radially from the inner wall of the tool holder 3. The frame limiting part 33 is annular in shape and is used for positioning and installation with the machine body.

[0045] The support part 12 is cylindrical. The tool holder 3 extends into the support part 12 and engages with it. Four locking blocks 121 are evenly distributed on the inner wall of the support part 12. The tool holder 3 is provided with a locking groove 31 that corresponds to the locking blocks 121. The locking blocks 121 engage with the locking grooves 31. The tool holder 3 and the support part 12 are easy to assemble and disassemble. Example 6

[0046] An electric shaver, including the shaver head assembly of embodiment 1, 2, 3, 4, or 5.

Claims

1. A razor head assembly, comprising a razor foil (1) and a moving blade (2), wherein the razor foil (1) comprises a razor foil section (11) and a support section (12), the razor foil section (11) being disposed above and connected to the support section (12), and the moving blade (2) extending into the support section (12) and disposed directly below the razor foil section (11), characterized in that: The neck (10) is where the shaving net (11) and the support (12) are connected. The neck (10) protrudes from the edge of the shaving net (11) and forms an outer comb (111). An outer shaving cavity (110) is provided inside the outer comb (111). The blade (21) on the moving blade (2) extends into the outer shaving cavity (110).

2. The shaving head assembly according to claim 1, characterized in that: The outer comb section (111) includes a number of outer comb teeth (115), the multiple outer comb teeth (115) are arranged in a circumferential array, and the outer comb entry pores (112) are formed between adjacent outer comb teeth (115), and all the outer comb entry pores (112) are connected to the outer shaving chamber (110).

3. The shaving head assembly according to claim 2, characterized in that: The outer comb teeth (115) are V-shaped or U-shaped, and the upper ends of all the outer comb teeth (115) are on the same horizontal plane.

4. The shaving head assembly according to claim 1, characterized in that: The moving blade (2) includes a circular blade holder (22), which consists of at least two positioning blocks (221), each of which is equipped with a blade (21).

5. The shaving head assembly according to claim 4, characterized in that: The blade (21) is an integral arc-shaped blade. The blade (21) includes an upper connecting part (211), a lower connecting part (212) and a number of cutting edge parts (213). The cutting edge parts (213) are V-shaped or U-shaped. The upper connecting part (211) is connected to the lower connecting part (212) through the cutting edge parts (213). The upper connecting part (211) and the lower connecting part (212) are parallel. A groove (210) is formed between the upper connecting part (211), the lower connecting part (212) and the cutting edge parts (213). The blade (21) is engaged with the positioning block (221) through the groove (210).

6. The shaving head assembly according to claim 4, characterized in that: The blade (21) is a flat blade. The blade (21) is inserted into the positioning block (221). All blades (21) are radially evenly distributed on the blade holder (22). The shaving net part (11) is provided with an inner comb part (113). The inner comb part (113) is provided with a long strip of internal combing holes (114). The outer comb part (111) surrounds the outer side of the inner comb part (113). The outer edge of the blade (21) extends into the outer shaving chamber (110). The inner edge of the blade (21) faces the inner comb part (113) and is located directly below it.

7. The shaving head assembly according to any one of claims 4-6, characterized in that: It also includes a positioning bracket (4) and a drive shaft (5). The positioning bracket (4) is fixed on the drive shaft (5). The positioning bracket (4) is supported below the blade holder (22) and rotates synchronously with it. The upper end of the drive shaft (5) is axially positioned on the shaving mesh part (11).

8. The shaving head assembly according to claim 7, characterized in that: The shaving mesh section (11) has a positioning element (117) for positioning in the middle, and the top of the drive shaft (5) has a positioning hole (51). The drive shaft (5) is axially positioned by cooperating with the positioning element (117) through the positioning hole (51).

9. The shaver head assembly according to claim 8, characterized in that: A positioning element (117) is formed by protruding downward at the middle of the lower end face of the shaving mesh part (11). A groove (116) is formed on the shaving mesh part (11) corresponding to the positioning element (117). A cover plate plug (6) is installed on the groove (116). A protruding post is provided on the lower end face of the cover plate plug (6), and the protruding post is inserted into the groove (116).

10. The shaving head assembly according to claim 7, characterized in that: Each positioning block (221) is provided with a positioning groove (2211). The positioning bracket (4) is a claw-shaped bracket. The positioning bracket (4) includes a number of positioning claws (43) equal to the number of positioning blocks (221). The upper end of the positioning claw (43) is positioned on the positioning groove (2211), and the lower end of the positioning claw (43) is fixed on the drive shaft (5).

11. The shaving head assembly according to claim 10, characterized in that: The drive shaft (5) has an outwardly protruding shaft limiting part (53) in the middle. The positioning bracket (4) also includes a lower positioning part (41). The lower positioning part (41) is fitted on the drive shaft (5) and fixedly connected to the shaft limiting part (53). Multiple positioning claws (43) are integrally formed on the lower positioning part (41) and evenly distributed around it. The top of the positioning claws (43) is bent outward horizontally to form an upper positioning part (42). The upper positioning part (42) is engaged in the positioning groove (2211).

12. The shaving head assembly according to claim 10 or 11, characterized in that: It also includes a tool holder (3), which is detachably installed in the support (12). A hollow frame (32) is fixed inside the tool holder (3). The drive shaft (5) is axially positioned on the hollow frame (32). The lower end of the drive shaft (5) extends out of the hollow frame (32). The bottom of the drive shaft (5) is provided with a shaft hole (52) connected to the drive source.

13. The shaving head assembly according to claim 12, characterized in that: The bottom inner wall of the tool holder (3) is provided with a frame limiting part (33) that is matched with the positioning of the machine body. The frame limiting part (33) protrudes radially from the inner wall of the tool holder (3) and the frame limiting part (33) is ring-shaped.

14. The shaving head assembly according to claim 12, characterized in that: The support part (12) is cylindrical. The tool holder (3) extends into the support part (12) and engages with it. The inner wall of the support part (12) is evenly distributed with a number of locking blocks (121). The tool holder (3) is provided with a slot (31) corresponding to the locking block (121). The locking block (121) engages with the slot (31).

15. An electric shaver, characterized in that: Includes the shaving head assembly as described in any one of claims 1-14.

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