Razor blade convenient to assemble

By designing a shaving blade with a torsion spring and a rotary shaft, the problem of inconvenient and easy scratching of the existing manual shaving blade is solved, and the blade is easily replaced and the safety of the blade is achieved.

CN222779631UActive Publication Date: 2025-04-22WENZHOU LUCHENG KANGYE SHAVER FACTORY
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Patent Information

Application Number
CN202420994253.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-05-09
Publication Date
2025-04-22
Estimated Expiration
2034-05-09

AI Technical Summary

Technical Problem

The blade replacement process of existing manual shaver requires the removal of the fixed structure, which can easily cause scratches on the user's hands and is inconvenient.

Method used

A shaving blade including a mounting box, a cutting head, a mounting cylinder, a mounting seat and a rotating shaft is designed. The rotation shaft is driven by a torsion spring to achieve the clamping and fixing between the butt rod and the docking seat. The cutting head can be disassembled and replaced by a rotating shaft.

Benefits of technology

It realizes convenient replacement of blades, reduces scratches when changing hands of users, and improves the safety and convenience of the replacement process.

✦ Generated by Eureka AI based on patent content.

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    Figure CN222779631U_ABST
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Abstract

The utility model relates to the technical field of shavers, in particular to a shaving blade convenient to assemble. According to the technical scheme, the device comprises a mounting box, a tool bit, a mounting cylinder, a mounting base and a rotating shaft, the tool bit is arranged at the upper end of the mounting box, a blade is arranged in the front end of the tool bit, a connecting block is arranged at the lower end of the tool bit, butt joint bases are arranged at the two ends of the connecting block, the rotating shaft is rotationally mounted in the mounting box, and the mounting base is arranged at the upper end of the rotating shaft; a butt joint rod is arranged at the upper end of the mounting seat, a torsional spring sleeves the outer side of the rotating shaft, a mounting frame is arranged in the front end of the mounting box, racks are arranged on the outer walls of the two sides of the mounting frame, a gear sleeves the outer wall of the front end of the rotating shaft, a mounting cylinder is arranged at the lower end of the mounting box, and a spring is arranged in the mounting cylinder. According to the utility model, the butting rod which is elastically supported is elastically clamped with the tool bit which is integrated with the blade, so that the problems that a user is easy to scratch and is relatively inconvenient in a blade replacement process are solved.
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Description

Technical Field

[0001] The utility model relates to the technical field of razors, in particular to a razor blade which is convenient to assemble. Background Art

[0002] A razor is a tool used to trim beards. It can be a traditional manually operated razor or an electric one. The user of a manual razor needs to move the blade by hand. The blade of a manual razor is made of stainless steel or other alloy materials to ensure the sharpness and durability of the blade.

[0003] The blades of manual razors are installed manually by personnel. Because the blades are sharp, when replacing them, the fixing structure of the blades needs to be disassembled and then the blades are replaced. The process of replacing the blades is easy to scratch the user, which is inconvenient. Therefore, we propose a razor blade that is easy to assemble to solve the existing problem. Utility Model Content

[0004] The utility model aims to solve the problems existing in the background technology and to provide a razor blade which is easy to assemble.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a razor blade that is easy to assemble, comprising an installation box, a cutter head, an installation cylinder, a mounting seat and a rotating shaft, wherein a cutter head is arranged at the upper end of the installation box, a blade is arranged inside the front end of the cutter head, a connecting block is arranged at the lower end of the cutter head, and docking seats are arranged at both ends of the connecting block, a symmetrically distributed rotating shaft is rotatably installed inside the installation box, a mounting seat is arranged at the upper end of the rotating shaft, a docking rod is arranged at the upper end of the mounting seat, a torsion spring is sleeved on the outer side of the rotating shaft, and the two ends of the torsion spring are respectively connected to the mounting seat and the installation box, a mounting frame is arranged inside the front end of the installation box, and equidistantly distributed racks are arranged on the outer walls of both sides of the mounting frame, a gear is sleeved on the outer wall of the front end of the rotating shaft, a mounting cylinder is arranged at the lower end of the installation box, a spring is arranged inside the mounting cylinder, and a travel block is arranged at the front end of the mounting frame.

[0006] Preferably, a handle is provided at the lower end of the installation box. When the handheld shaver is used, it can be moved by grasping the handle.

[0007] Preferably, one end of the docking rod is inserted into the docking seat, and the docking ends of the docking rod and the docking seat are both rectangular. The rectangular docking joint of the docking rod is inserted into the rectangular inner wall of the docking seat to prevent the connection block from rotating.

[0008] Preferably, the upper end of the installation box is provided with symmetrically distributed travel openings, and the upper end of the docking rod is located inside the travel openings. The docking rod obtains a travel space for rotation inside the upper end of the installation box through the travel openings.

[0009] Preferably, the mounting frame is U-shaped, and the rack and the gear mesh with each other. The U-shaped shape of the mounting frame facilitates the arrangement of the rack, and when the rack moves longitudinally, an extrusion force is applied to the gear, thereby pushing the gear to rotate.

[0010] Preferably, a travel groove is provided inside the front end of the installation box, the travel block is slidably installed inside the travel groove, the upper end of the spring is connected to the travel block, and the lower end of the spring is connected to the inner wall of the lower end of the installation tube. When the mounting frame passes through the travel block in the longitudinal travel, it is convenient for personnel to move, and through the travel groove, the travel block is guided to move longitudinally inside the installation box, and applies extrusion force to the spring, and the elastic force of the spring acts on the mounting frame.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0012] 1. The utility model installs the blade and the cutter head as one body, so that the user can avoid direct contact with the blade with his hands. A docking seat is arranged at the lower end of the cutter head, and a rotating shaft which is elastically installed by torsion of a torsion spring is arranged inside the installation box. The rotating shaft drives the docking rod to be clamped inside the docking seat, and the cutter head is elastically clamped and fixed. When the cutter head is replaced, a rotational force is applied to the rotating shaft. When the rotating shaft rotates and drives the docking head which moves away from each other to end the clamping of the docking seat, the cutter head is disassembled and a new cutter head is installed on the installation box, so that the blade is conveniently replaced, the user's hand is less likely to be scratched when the blade is replaced, and the blade is easy to assemble and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a side view stereoscopic structural schematic diagram of the utility model;

[0014] Figure 2 This is a schematic diagram of the three-dimensional structure of the installation box of the utility model from a main section view at a first angle;

[0015] Figure 3 This is a schematic diagram of the three-dimensional structure of the installation box of the utility model from a second angle of the main section;

[0016] Figure 4 It is a schematic diagram of the three-dimensional structure of the rotating shaft of the utility model from the side;

[0017] Figure 5 It is a schematic diagram of the main three-dimensional structure of the rotating shaft of the utility model.

[0018] Figure numerals: 1. mounting box; 2. handle; 3. cutter head; 4. blade; 5. connecting block; 6. mounting cylinder; 7. travel block; 8. docking seat; 9. docking rod; 10. travel opening; 11. mounting seat; 12. mounting frame; 13. rack; 14. gear; 15. torsion spring; 16. spring; 17. travel groove; 18. rotating shaft. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] like Figure 1-Figure 5 As shown, the utility model proposes a convenient assembly razor blade, including a mounting box 1, a cutter head 3, a mounting cylinder 6, a mounting seat 11 and a rotating shaft 18. The lower end of the mounting box 1 is provided with a handle 2, the upper end of the mounting box 1 is provided with a cutter head 3, a blade 4 is provided inside the front end of the cutter head 3, a connecting block 5 is provided at the lower end of the cutter head 3, and docking seats 8 are provided at both ends of the connecting block 5. A symmetrically distributed rotating shaft 18 is rotatably installed inside the mounting box 1, a mounting seat 11 is provided at the upper end of the rotating shaft 18, and a docking rod 9 is provided at the upper end of the mounting seat 11. One end of the docking rod 9 is plugged into the docking seat 8, and the docking ends of the docking rod 9 and the docking seat 8 are both rectangular. A symmetrically distributed travel port 10 is opened inside the upper end of the mounting box 1, and the upper end of the docking rod 9 is located at the travel port 10. Inside the process mouth 10, a torsion spring 15 is sleeved on the outside of the rotating shaft 18, and the two ends of the torsion spring 15 are respectively connected to the mounting seat 11 and the mounting box 1, a mounting frame 12 is arranged inside the front end of the mounting box 1, and the mounting frame 12 is U-shaped. Racks 13 distributed equidistantly are arranged on the outer walls of both sides of the mounting frame 12, and a gear 14 is sleeved on the outer wall of the front end of the rotating shaft 18. The rack 13 and the gear 14 are meshed with each other. A mounting cylinder 6 is arranged at the lower end of the mounting box 1, and a spring 16 is arranged inside the mounting cylinder 6. A travel block 7 is arranged at the front end of the mounting frame 12, and a travel groove 17 is opened inside the front end of the mounting box 1. The travel block 7 is slidably installed inside the travel groove 17, the upper end of the spring 16 is connected to the travel block 7, and the lower end of the spring 16 is connected to the inner wall of the lower end of the mounting cylinder 6.

[0021] The implementation steps based on Example 1 are as follows: lift the travel block 7, pull up the spring 16, and the spring 16 is lifted together with the travel block 7 after being stressed, driving the mounting frame 12 to lift, and the racks 13 at both ends of the mounting frame 12 apply an upward force to the gear 14, and the two gears 14 rotate in opposite directions, driving the rotating shaft 18 to rotate, and the rotating shaft 18 applies a torsional force to the torsion spring 15, driving the mounting seat 11 and the docking rod 9 to move to both sides of the mounting box 1, at this time, the docking rod 9 is separated from the docking seat 8, and after the cutter head 3 is replaced, the docking seat 8 at the lower end of the new cutter head 3 docks with the docking rod 9, At this time, the travel block 7 is relaxed, and the mounting frame 12 is pulled down by the elasticity of the spring 16 itself. The rack 13 applies a downward force to the gear 14, and the gear 14 and the rotating shaft 18 rotate in opposite directions. At the same time, the torsion spring 15 is reset by its own elasticity, pushing the rotating shaft 18 to reset, driving the docking rod 9 to move relatively, and the docking rod 9 is inserted into the docking seat 8 to realize the clamping and fixing of the new cutter head 3. The blade 4 is installed integrally with the cutter head 3, and the user does not need to take out the blade 4 separately, which improves the safety when the blade 4 is replaced, and the replacement of the blade 4 is convenient and easy to operate.

[0022] The above-mentioned specific embodiments are only several preferred embodiments of the present invention. Based on the technical solution of the present invention and the relevant inspiration of the above-mentioned embodiments, those skilled in the art can make various alternative improvements and combinations to the above-mentioned specific embodiments.

[0023] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A razor blade that is easy to assemble, comprising a mounting box (1), a blade head (3), a mounting cylinder (6), a mounting seat (11) and a rotating shaft (18), characterized in that: The upper end of the installation box (1) is provided with a cutter head (3), a blade (4) is provided inside the front end of the cutter head (3), a connecting block (5) is provided at the lower end of the cutter head (3), and docking seats (8) are provided at both ends of the connecting block (5). A symmetrically distributed rotating shaft (18) is rotatably installed inside the installation box (1), a mounting seat (11) is provided at the upper end of the rotating shaft (18), a docking rod (9) is provided at the upper end of the mounting seat (11), and a torsion spring (15) is sleeved on the outer side of the rotating shaft (18). The two ends of the torsion spring (15) are respectively connected to the mounting seat (11) and the mounting box (1); a mounting frame (12) is arranged inside the front end of the mounting box (1); the outer walls on both sides of the mounting frame (12) are provided with racks (13) distributed at equal intervals; the outer wall of the front end of the rotating shaft (18) is sleeved with a gear (14); the lower end of the mounting box (1) is provided with a mounting cylinder (6); the interior of the mounting cylinder (6) is provided with a spring (16); and the front end of the mounting frame (12) is provided with a travel block (7).

2. A razor blade that is easy to assemble according to claim 1, characterized in that: A handle (2) is provided at the lower end of the installation box (1).

3. The razor blade for easy assembly according to claim 1, characterized in that: One end of the docking rod (9) is inserted into the docking seat (8), and the docking ends of the docking rod (9) and the docking seat (8) are both rectangular.

4. The razor blade for easy assembly according to claim 1, characterized in that: The upper end of the installation box (1) is provided with symmetrically distributed travel openings (10), and the upper end of the docking rod (9) is located inside the travel opening (10).

5. The razor blade for easy assembly according to claim 1, characterized in that: The mounting frame (12) is U-shaped, and the rack (13) and the gear (14) are meshed with each other.

6. The razor blade for easy assembly according to claim 1, characterized in that: A travel groove (17) is provided inside the front end of the installation box (1), the travel block (7) is slidably installed inside the travel groove (17), the upper end of the spring (16) is connected to the travel block (7), and the lower end of the spring (16) is connected to the inner wall of the lower end of the installation tube (6).