A shaving razor head with a back blade based on ABS fusion strip ultrasonic connection
By using ultrasonic fusion connection made of ABS material and a back blade design, the problems of weak connection and lack of back blade in traditional shaver heads are solved, achieving higher connection strength and more comprehensive shaving effect, and improving product lifespan and production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU LIYU RAZOR CO LTD
- Filing Date
- 2025-07-25
- Publication Date
- 2026-07-21
AI Technical Summary
Traditional razor heads are not securely connected and are prone to falling off, resulting in low assembly efficiency. Furthermore, the lack of a back blade structure makes it difficult to handle longer hairs in areas such as sideburns.
It adopts an ultrasonic fusion connection method made of ABS material, and achieves a multi-point firm connection between the upper and lower blade heads through fusion strip one and fusion strip two. The back blade is set on the blade head to cooperate with the front blade to enhance the shaving effect.
It improves the strength and stability of the blade head connection, extends service life, enhances the thoroughness of shaving, simplifies the production process and reduces costs, while avoiding glue aging and harmful substance residue.
Smart Images
Figure CN224527291U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of razor head technology, specifically to a razor head with back blades based on ABS fusion strip ultrasonic connection. Background Technology
[0002] In daily shaving, ordinary razor heads typically only allow shaving with the front blades. Traditional razor heads often use snap-fit or glue connections between components, leading to issues like weak connections, easy detachment, and low assembly efficiency. Furthermore, traditional razor heads only have one set of blades for shaving beard hairs, lacking a back blade for trimming longer hairs like sideburns. To address these problems, this invention proposes a razor head with a back blade based on ultrasonic bonding using ABS fusion strips. Summary of the Invention
[0003] (a) Technical problems to be solved The technical problem this utility model aims to solve is that traditional shaving heads often use snap-fit or glue-gluing methods to connect the various parts, which results in weak connections, easy detachment, low assembly efficiency, and the fact that traditional shaving heads only have one set of blades for shaving beards and do not have a back blade for shaving longer hairs such as sideburns.
[0004] (II) Technical Solution To solve the above problems, this utility model provides the following technical solution: A razor head with back blades based on ultrasonic connection of ABS fusion strips includes an upper blade head body and a lower blade head body, wherein the upper blade head body is sleeved on the lower blade head body; The two short sides of the lower cutter head body are provided with fusion strips to facilitate ultrasonic fusion connection. The lower cutter head body is provided with three blade mounting parts, and the three blade mounting parts are provided with multiple blades; The back side of the lower cutter head body is provided with a back cutter mounting post and a back cutter with an inverted L-shaped structure. The back cutter has a mounting hole and the back cutter is fitted onto the back cutter mounting post through the mounting hole. The side of the lower cutter head body near the back cutter is also provided with a back cutter abutting block. The side of the back cutter abutting block near the back cutter has a downward inclined surface and abuts against the back cutter. The back blade mounting posts are provided in multiple locations, and each back blade mounting post has a fusion strip on its upper surface to facilitate ultrasonic fusion connection. The upper cutter head body is provided with a mounting groove, and the upper part of the back cutter mounting post matches the mounting groove.
[0005] Furthermore: the blade mounting component includes multiple blade abutment pieces and an inclined bottom connecting block. The multiple blade abutment pieces are arranged in an array on the bottom connecting block. Adjacent blade abutment pieces form a blade embedding groove. Each blade embedding groove contains a blade. The upper end of the blade abutment piece is provided with an abutment slope. The blade has a structure similar to an inverted L-shape. The horizontal height of the bottom connecting block near the back blade is lower than the horizontal height of the side away from the back blade.
[0006] Furthermore, the lower blade body is also provided with combing teeth on the side near the back blade.
[0007] Furthermore, the lower cutter head body is also provided with two connecting through slots, and the two connecting through slots are symmetrically arranged on the lower cutter head body. The upper cutter head body is provided with hook-shaped buckles that cooperate with the connecting through slots, and the hook-shaped buckles are provided with two buckles that correspond to the two connecting through slots respectively.
[0008] Furthermore, a lubrication strip is provided on the side of the upper cutter head body near the back cutter.
[0009] Furthermore: the upper inclined surface of the upper blade body near the mounting groove abuts against the upper end face of the back blade.
[0010] Furthermore, the back blade has a structure similar to an inverted L-shape.
[0011] Furthermore: the upper blade body and the hook-shaped buckle are integrally formed; The lower cutter head body, the blade mounting component, the back cutter mounting post, and the back cutter abutment block are integrally formed.
[0012] Furthermore, the upper cutter head body is provided with a continuous trapezoidal structure of downward pressing steps on both sides, and the lower end face of the two downward pressing steps abuts against the upper end face of the corresponding blade.
[0013] (III) Beneficial Effects The beneficial effects of this utility model are: 1. The connection method is based on ultrasonic fusion connection, and fusion strip one and fusion strip two are made of ABS material. The excellent heat-melting performance of ABS material ensures full fusion in multiple parts and multiple points, making the connection between the upper cutter head body and the lower cutter head body firm and reliable. Compared with the traditional connection method, the connection strength is higher, the impact resistance is stronger, and the service life of the product is effectively extended. The ultrasonic fusion connection made of ABS material eliminates the need for auxiliary materials such as glue, avoiding the problem of connection failure caused by glue aging and producing no harmful residues, making it more environmentally friendly. At the same time, it simplifies the assembly process, improves production efficiency, and reduces production costs. 2. This utility model is equipped with a back blade, which works in conjunction with the front blade to cut and trim the beard more comprehensively, improving the thoroughness of shaving and solving the problem that ordinary shaving heads cannot handle stubborn beards. Attached Figure Description Figure 1 This is a three-dimensional representation of the present invention. Figure 1 ; Figure 2 This is a three-dimensional representation of the present invention. Figure 2 ; Figure 3 This is an exploded view of this utility model; Figure 4 This is a schematic diagram of the structure of the upper cutter head body of this utility model; Figure 5 This is a schematic diagram of the structure of the lower cutter head body of this utility model. Figure 1 ; Figure 6 This is a schematic diagram of the structure of the lower cutter head body of this utility model. Figure 2 ; Figure 7 This is a cross-sectional view of the present invention.
[0014] The markings in the diagram are: 1-Upper cutter head body, 2-Lower cutter head body, 3-Fusion strip one, 4-Blade mounting piece, 5-Blade, 6-Back blade mounting post, 7-Back blade, 8-Back blade abutment block, 9-Lower bevel, 10-Fusion strip two, 11-Mounting groove, 12-Combing teeth, 13-Connecting through groove, 14-Hook-type buckle, 15-Lubricating strip, 16-Upper bevel, 17-Lower pressing step, 18-Mounting hole, 401-Blade abutment piece, 402-Bottom connecting block, 403-Blade embedding groove, 404-Abutment bevel. Detailed Implementation
[0015] 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.
[0016] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0017] Please see Figures 1-7 The image shows a razor head with a back blade based on ABS fusion strip ultrasonic connection, comprising an upper blade body 1 and a lower blade body 2. The upper blade body 1 is sleeved on the lower blade body 2, and the two are stably connected mainly by ultrasonic fusion. The lower cutter head body 2 has fusion strips 3 on its two short sides. Fusion strips 3 are made of ABS material, which has good heat-melting and flow properties, making it an ideal material for ultrasonic fusion bonding. During assembly, the high-frequency vibration generated by the ultrasonic welding equipment causes the ABS fusion strips 3 to rapidly heat up and melt at the corresponding contact points with the upper cutter head body 1. The molten ABS material fully fills the connection gap, and after cooling, forms a strong molecular-level bond, significantly enhancing the stability of the connection between the upper cutter head body 1 and the lower cutter head body 2. Compared with traditional connection methods, the connection strength is higher, and there are no problems such as glue residue. The lower blade head body 2 is provided with three blade mounting members 4, and each of the three blade mounting members 4 is provided with multiple blades 5. Each blade mounting member 4 includes multiple blade abutment pieces 401 and an inclined bottom connecting block 402. The multiple blade abutment pieces 401 are arranged in an array on the bottom connecting block 402, and adjacent blade abutment pieces 401 form a blade embedding groove 403. Each blade embedding groove 403 contains one blade 5. The upper end of each blade abutment piece 401 is provided with an abutment slope 404, which provides good abutment and fixation for the blade 5, preventing it from shaking during shaving. The blade 5 has a similar inverted L-shaped structure, which facilitates better contact with the beard and improves shaving efficiency. The horizontal height of the bottom connecting block 402 near the back blade 7 is lower than the horizontal height of the side away from the back blade 7, causing the blade 5 to have a certain tilt angle, which is more ergonomic and facilitates close shaving of the face. The back side of the lower cutter head body 2 is provided with a back cutter mounting post 6 and a back cutter 7 with a similar inverted L-shaped structure. The back cutter 7 is provided with a mounting hole 18. The back cutter 7 is fitted onto the back cutter mounting post 6 through the mounting hole 18 to achieve initial installation and positioning of the back cutter 7. The side of the lower cutter head body 2 near the back cutter 7 is also provided with a back cutter abutting block 8. The side of the back cutter abutting block 8 near the back cutter 7 is provided with a downward inclined surface 9, which abuts against the back cutter 7. The downward inclined surface 9 can apply a stable abutting force to the back cutter 7 to ensure that the back cutter 7 will not loosen during operation. Multiple back-blade mounting posts 6 are provided, and each back-blade mounting post 6 has a fusion strip 2 10 on its upper surface. The fusion strip 2 10 is also made of ABS material and is another key ultrasonic fusion connection structure. During assembly, after the mounting groove 11 of the upper blade head body 1 matches and aligns with the upper part of the back-blade mounting post 6, the fusion strip 2 10 made of ABS material is subjected to ultrasonic welding equipment, causing the fusion strip 2 10 to melt and fuse with the inner wall of the mounting groove 11. After melting, the ABS material can spread evenly and bond tightly, forming a multi-point strong connection, further tightly binding the upper blade head body 1 and the lower blade head body 2. This multi-point ultrasonic fusion, combined with the side fusion of the fusion strip 3, greatly improves the overall connection strength, allowing it to withstand greater external impact without easily separating. The upper blade head body 1 has a mounting groove 11, and the upper part of the back-blade mounting post 6 matches the mounting groove 11, providing a precise positioning basis for ultrasonic fusion, ensuring the accuracy of the fusion position, and allowing the ABS material to fully fuse at the predetermined position. The upper blade body 1 has an upper inclined surface 16 on the side near the mounting groove 11. The upper inclined surface 16 abuts against the upper end face of the back blade 7. The abutment between the upper inclined surface 16 and the upper end face of the back blade 7 further enhances the fixing effect of the back blade 7, making the back blade 7 more stable and reliable during operation. The lower blade head body 2 is also provided with combing teeth 12 on the side near the back blade 7. The combing teeth 12 can comb the beard during the shaving process, so that the beard enters the working range of the blade 5 and the back blade 7 more neatly, thereby improving the shaving effect. The lower cutter head body 2 is also provided with two connecting through slots 13, and the two connecting through slots 13 are symmetrically arranged on the lower cutter head body 2. The upper cutter head body 1 is provided with hook-shaped buckles 14 that cooperate with the connecting through slots 13. The hook-shaped buckles 14 are provided with two hooks that correspond to the two connecting through slots 13 respectively. The hook-shaped buckles 14 are inserted into the connecting through slots 13 as an auxiliary fixing structure for ultrasonic fusion connection. They play a pre-fixing role before ultrasonic fusion, which facilitates the fusion operation. At the same time, they further enhance the stability of the overall connection after fusion. The upper blade body 1 is provided with a lubricating strip 15 on the side near the back blade 7. The lubricating strip 15 can play a lubricating role during shaving, reducing friction between the blade head and the skin and improving shaving comfort. The upper blade head body 1 is also provided with a continuous trapezoidal structure of downward pressing steps 17 on both sides. The lower end face of the two downward pressing steps 17 abuts against the upper end face of the corresponding blade 5. The downward pressing steps 17 abut against the blade 5, which further enhances the installation stability of the blade 5 and prevents the blade 5 from shaking up and down during shaving, thus ensuring the smoothness and effectiveness of shaving. The upper cutter head body 1 and the hook-shaped buckle 14 are integrally formed; the lower cutter head body 2, the blade mounting part 4, the back blade mounting post 6 and the back blade abutment block 8 are integrally formed. The integrally formed structure can improve the structural strength of the components, reduce assembly steps, provide a more stable basic structure for ultrasonic fusion connection, and improve production efficiency. Working principle During shaving, when the shaving head contacts the beard, the combing teeth 12 first comb the beard, making it neatly arranged. Then, the blade 5 cuts the beard during operation. Because the blade 5 has a similar inverted L-shaped structure and the bottom connecting block 402 is angled, the blade 5 can better conform to the face and efficiently cut the beard. Simultaneously, the back blade 7, also with a similar inverted L-shaped structure, remains stable under the combined fixing action of the back blade support block 8, the back blade mounting post 6, and the inclined surface 16 on the upper blade head body 1, assisting in cutting and trimming the beard to ensure a more thorough shave. The upper blade head body 1 and the lower blade head body 2 are ultrasonically fused together using ABS material fusion strip 1 3 and fusion strip 2 10 to form the main stable structure. The strong connection formed by the fusion of ABS material makes the two a whole, maintaining structural stability regardless of the direction of force during shaving, and preventing loosening of parts from affecting the shaving effect. The downward pressing steps 17 on both sides of the upper blade head body 1 abut against the upper end face of the blade 5, further ensuring the stability of the blade 5. The cooperation between the hook-shaped buckle 14 and the connecting groove 13 further assists in strengthening the connection, and the lubricating strip 15 provides lubrication during shaving, reducing discomfort caused by skin friction.
[0018] The embodiments are detailed, and the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the present invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0019] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A razor head with back blades based on ABS fusion strip ultrasonic bonding, characterized in that: It includes an upper cutter head body (1) and a lower cutter head body (2), wherein the upper cutter head body (1) is sleeved on the lower cutter head body (2); The two short sides of the lower cutter head body (2) are provided with fusion strips (3) to facilitate ultrasonic fusion connection. The lower cutter head body (2) is provided with three blade mounting parts (4), and the three blade mounting parts (4) are provided with multiple blades (5); The back side of the lower cutter head body (2) is provided with a back cutter mounting post (6) and a back cutter (7) with a similar inverted L-shaped structure. The back cutter (7) is provided with a mounting hole (18). The back cutter (7) is fitted onto the back cutter mounting post (6) through the mounting hole (18). The side of the lower cutter head body (2) near the back cutter (7) is also provided with a back cutter abutting block (8). The side of the back cutter abutting block (8) near the back cutter (7) is provided with a lower inclined surface (9) and abuts against the back cutter (7). The back knife mounting post (6) is provided in multiple ways, and each back knife mounting post (6) is provided with a fusion strip (10) on its upper end surface to facilitate ultrasonic fusion connection. The upper cutter head body (1) is provided with a mounting groove (11), and the upper part of the back cutter mounting post (6) matches the mounting groove (11).
2. The razor head with back blades based on ABS fusion strip ultrasonic connection according to claim 1, characterized in that: The blade mounting component (4) includes multiple blade abutment pieces (401) and an inclined bottom connecting block (402). The multiple blade abutment pieces (401) are arranged in an array on the bottom connecting block (402). Adjacent blade abutment pieces (401) form a blade embedding groove (403). Each blade embedding groove (403) contains a blade (5). The upper end of the blade abutment piece (401) is provided with an abutment slope (404). The blade (5) has a structure similar to an inverted L-shape. The horizontal height of the bottom connecting block (402) on the side closer to the back blade (7) is lower than the horizontal height on the side away from the back blade (7).
3. The razor head with back blades based on ABS fusion strip ultrasonic connection according to claim 1, characterized in that: The lower blade body (2) is also provided with combing teeth (12) on the side near the back blade (7).
4. The razor head with back blades based on ABS fusion strip ultrasonic connection according to claim 1, characterized in that: The lower cutter head body (2) is also provided with two connecting through slots (13), and the two connecting through slots (13) are symmetrically arranged on the lower cutter head body (2). The upper cutter head body (1) is provided with hook-shaped buckles (14) that cooperate with the connecting through slots (13), and the hook-shaped buckles (14) are provided with two that correspond to the two connecting through slots (13) respectively.
5. A razor head with back blades based on ABS fusion strip ultrasonic connection according to claim 4, characterized in that: The upper cutter head body (1) is provided with a lubrication strip (15) on the side near the back cutter (7).
6. A razor head with back blades based on ABS fusion strip ultrasonic connection according to claim 1, characterized in that: The upper blade body (1) has an upper inclined surface (16) on one side near the mounting groove (11), and the upper inclined surface (16) abuts against the upper end face of the back blade (7).
7. A razor head with back blades based on ABS fusion strip ultrasonic connection according to claim 1, characterized in that: The back blade (7) has a structure similar to an inverted L-shape.
8. A razor head with back blades based on ABS fusion strip ultrasonic connection according to claim 4, characterized in that: The upper blade body (1) and the hook-shaped buckle (14) are integrally formed; The lower cutter head body (2), the blade mounting component (4), the back cutter mounting column (6), and the back cutter abutment block (8) are integrally formed.
9. A razor head with a back blade based on ABS fusion strip ultrasonic connection according to claim 1, characterized in that: The upper cutter head body (1) is also provided with a continuous ladder-like structure of lower pressing steps (17) on both sides, and the lower end face of the two lower pressing steps (17) abuts against the upper end face of the corresponding blade (5).