Movable and fixed cutter structure and reciprocating type razor with movable and fixed cutter structure
By adopting a moving fixed knife structure in the reciprocating shaver, the elastic deformation of the moving knife teeth improves the fit between the fixed knife teeth and the moving knife teeth, and the fit between the fixed knife teeth and the moving knife teeth in the prior art is solved. The problem of insufficient results enables higher cutting sharpness.
Patent Information
- Application Number
- CN202421011096.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-10
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-05-10
AI Technical Summary
In the existing reciprocating razor, the fit between the fixed knife teeth and the moving knife teeth is insufficient, resulting in insufficient cutting sharpness. Especially in the cantilever structure, the outer end of the fixed knife teeth is not limited, making it easy to stick. A situation that is not good.
A moving stabilization knife structure is adopted, wherein the setting knife comprises a sheet-shaped setting blade and rows of setting knife teeth. The moving knife is provided with a moving knife teeth located below the setting knife teeth. When the head of the moving knife teeth and the setting knife are When the bottom surface of the teeth contacts, there is a gap. The movable knife uses the head of the movable knife teeth as the fulcrum as the fulcrum to elastically deform to the fixed blade side, reducing the gap, making the movable knife teeth elastically press against the fixed blade teeth, improving fit Spend.
By improving the fit between the fixed tool teeth and the moving tool teeth, the cutting sharpness is significantly improved, the impact of production errors on the fitting degree is overcome, and the optimal fit between the moving tool teeth and the fixed tool teeth is ensured.
Smart Images
Figure CN222472570U_ABST
Abstract
Description
[Technical field]
[0001] The utility model relates to a movable and fixed blade structure, and also relates to a reciprocating shaver with the movable and fixed blade structure. [Background technology]
[0002] In a reciprocating razor, a key factor affecting its cutting sharpness is the fit between the fixed blade teeth and the movable blade teeth. In actual production, the fit between the fixed blade teeth and the movable blade teeth will be affected by production errors such as processing errors of each component itself and assembly errors between components. In particular, when the fixed blade teeth of some razors are cantilever structures with one end fixed and the other end suspended, since the outer end of the fixed blade teeth is not limited, during the production process, the fixed blade teeth and the movable blade teeth are prone to poor fit and insufficient sharpness. Although the movable blade is pressed against the fixed blade from the bottom, it is often the case that the main body of the movable blade fits the fixed blade, while the movable blade teeth of the movable blade do not fit well with the fixed blade teeth of the fixed blade, which affects cutting.
[0003] The utility model is made based on this situation. [Contents of the utility model]
[0004] The technical problem to be solved by the utility model is to provide a movable and fixed knife structure with a simple structure, which is beneficial to improving the fit between the fixed knife teeth and the movable knife teeth and improving the cutting sharpness.
[0005] In order to solve the above technical problems, the utility model provides a movable fixed knife structure, comprising a fixed knife and a sheet-shaped movable knife, wherein the fixed knife comprises a sheet-shaped fixed blade and fixed knife teeth arranged in rows on the left side and / or right side of the fixed blade, a hair feeding groove is provided between two adjacent fixed knife teeth, the movable knife is provided with movable knife teeth located below the fixed knife teeth, the movable knife is located below the fixed blade, and when the head of the movable knife tooth contacts the bottom surface of the tooth body of the fixed knife tooth, there is a gap between the movable knife and the fixed blade.
[0006] In the movable and fixed blade structure as described above, the fixed blade is an arc-shaped structure in the left-right direction, with its concave side facing downward, and the movable blade is a straight structure or an arc-shaped structure in the left-right direction. When the movable blade is an arc-shaped structure and its concave side faces downward, the curvature of the movable blade is smaller than the curvature of the fixed blade; or the fixed blade is a straight structure in the left-right direction, and the movable blade is an arc-shaped structure in the left-right direction and its concave side faces upward.
[0007] Another technical problem to be solved by the utility model is to provide a reciprocating razor with a simple structure, which has the characteristics of good fit between the fixed blade teeth and the movable blade teeth and sharp cutting.
[0008] In order to solve the above technical problems, the utility model provides a reciprocating razor with the above-mentioned movable and fixed knife structure, including a fixing frame for fixing the fixed knife, a pressing piece for supporting the movable knife from below is provided under the movable knife, the pressing piece makes the head of the movable knife tooth stick to the bottom surface of the tooth body of the fixed knife tooth, and makes the movable knife deform toward one side of the fixed knife with the head of the movable knife tooth as a fulcrum so that the tooth body of the movable knife tooth is close to the tooth body of the fixed knife tooth, and the movable knife is connected to a movable knife transmission device for driving the movable knife to reciprocate relative to the fixed knife.
[0009] In the reciprocating shaver as described above, the gap between the tooth bodies of the movable teeth and the tooth bodies of the fixed teeth is between 0 and 0.05 mm.
[0010] In the reciprocating razor as described above, the fixed frame is provided with a convex rib protruding upward in the front-to-back direction, and the convex rib serves as a pressing member to press on the root of the moving blade teeth or the root position of the moving blade close to the moving blade teeth; or a clearance groove for avoiding the fixed blade teeth is provided on the left and / or right side of the fixed frame, and the corners of the fixed frame located in the front-to-back direction of the clearance groove serve as a pressing member to press on the root of the moving blade teeth or the root position of the moving blade close to the moving blade teeth; or a ball bearing is provided on the fixed frame, and the ball bearing serves as a pressing member to press on the bottom of the moving blade and deviate to one side of the moving blade teeth.
[0011] In the reciprocating razor as described above, the fixed frame is further provided with a ball as a pressure piece to support the bottom of the movable blade from below, and when the fixed blade is an arc structure in the left and right directions, the ball is higher than the ribs or corners.
[0012] In the reciprocating razor as described above, the fixed blade is integrally formed of a metal plate, and the fixed blade is integrally formed with a downward edging on the front and rear ends, and the edging is smoothly transitioned to the top of the fixed blade, and the fixed frame includes a metal bracket, and the metal bracket is provided with a concave mounting groove on the outer edges of the front and rear ends for the edging to be inserted, the edging is fixed in the mounting groove by welding, and the outer side surface of the edging is aligned or substantially aligned with the outer side surface of the metal bracket, the root of the fixed blade tooth is connected to the fixed blade, and the outer end is a free end, and the outer end of the fixed blade tooth is provided with a smooth ball head.
[0013] Compared with the prior art, the utility model has the following advantages:
[0014] 1. The movable and fixed blade structure of the utility model has a simple structure. When the head of the movable blade tooth contacts the bottom surface of the tooth body of the fixed blade tooth, there is a gap between the movable blade and the fixed blade. During installation, the head of the movable blade tooth contacts the bottom surface of the tooth body of the fixed blade tooth first, and the head of the movable blade tooth is used as a support to elastically deform the movable blade toward one side of the fixed blade to reduce the gap between the movable blade and the fixed blade, so that the movable blade tooth is elastically pressed on the tooth body of the fixed blade tooth, which is beneficial to improve the fit between the fixed blade tooth and the movable blade tooth and improve the sharpness of cutting.
[0015] 2. The reciprocating razor of the utility model has a simple structure and a simple manufacturing process, which can effectively overcome the influence of production errors, and is conducive to improving the fit between the fixed blade teeth and the movable blade teeth, and improving the sharpness of cutting. For the entire movable blade teeth, the fit between the head of the movable blade teeth and the tooth body of the fixed blade teeth is the best, which can effectively ensure the fit between the head of the movable blade teeth and the position near the head of the movable blade teeth and the fixed blade teeth. Since the head of the movable blade teeth is close to the outside, it cuts the hair first, thereby improving the sharpness of cutting the hair.
Brief Description of the Drawings
[0016] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings, wherein:
[0017] Figure 1 It is an exploded view of a reciprocating razor of the utility model;
[0018] Figure 2a This is a structural schematic diagram of a first embodiment of a movable and fixed knife structure of the utility model;
[0019] Figure 2b This is a structural schematic diagram of a second embodiment of a movable and fixed knife structure of the utility model;
[0020] Figure 2c This is a structural schematic diagram of a third embodiment of a movable and fixed knife structure of the utility model;
[0021] Figure 2d This is a structural schematic diagram of a fourth embodiment of a movable and fixed knife structure of the utility model;
[0022] Figure 3a-3c This is a schematic diagram of the installation of a reciprocating razor of the utility model;
[0023] Figure 4 It is a structural schematic diagram of an embodiment in which a convex rib is used as a top pressure member;
[0024] Figure 5 It is a schematic structural diagram of an embodiment using convex ribs and balls as top pressure members;
[0025] Figure 6 It is a structural schematic diagram of an embodiment in which the corners of the air-avoiding groove are used as the top pressure piece;
[0026] Figure 7 It is a structural schematic diagram of an embodiment in which the corners of the air-avoiding groove and the ball bearing are used as the top pressure piece;
[0027] Figure 8 2 is a schematic structural diagram of an embodiment in which a ball bearing is used as a top pressure member;
[0028] Fig. 9 is a structural schematic diagram of an embodiment in which a fixing frame includes a metal bracket and a plastic frame;
[0029] Fig.10 The utility model is a three-dimensional diagram of a reciprocating shaver. [Specific implementation method]
[0030] The utility model is further described below in conjunction with the accompanying drawings:
[0031] like Figures 2a to 2d A movable fixed knife structure is shown, comprising a fixed knife 1 and a sheet-shaped movable knife 3, both of which are made of metal sheets, and the material thickness is 0.15mm±0.1mm, the fixed knife 1 comprises a sheet-shaped fixed blade 11 and fixed knife teeth 13 arranged in rows on the left side and / or the right side of the fixed blade 11, and a hair feeding groove 15 is provided between two adjacent fixed knife teeth 13, as shown in FIG. Figure 1 As shown, the movable knife 3 is provided with movable knife teeth 31 located below the fixed knife teeth 13, and the movable knife 3 is located below the fixed blade 11. When the head of the movable knife teeth 31 contacts the bottom surface of the tooth body 131 of the fixed knife teeth 13, there is a gap between the movable knife 3 and the fixed blade 11. During installation, the head of the movable knife teeth 31 contacts the bottom surface of the tooth body 131 of the fixed knife teeth 13 first, and the head of the movable knife teeth 31 is used as a support to elastically deform the movable knife 3 toward one side of the fixed blade 11 to reduce the gap between the movable knife 3 and the fixed blade 11, so that the movable knife teeth 31 are elastically pressed against the tooth body of the fixed knife teeth 13, which is beneficial to improve the fit between the fixed knife teeth and the movable knife teeth and improve the sharpness of cutting.
[0032] like Figures 2a to 2c In the embodiment shown, when the fixed blade 11 is an arc-shaped structure in the left-right direction, with the concave side facing downward, the movable blade matched therewith, such as Figure 2b In the embodiment shown, the movable knife 3 is a straight structure in the left-right direction, or as Figure 2a As shown, the movable knife 3 is an arc-shaped structure in the left-right direction. When the concave side of the movable knife 3 faces downward, the curvature of the movable knife 3 is smaller than the curvature of the fixed blade 11.
[0033] like Figure 2d In the illustrated embodiment, the fixed blade 11 is a straight structure in the left-right direction, and the movable blade 3 is an arc-shaped structure in the left-right direction with the concave side facing upward.
[0034] like Figures 1 to 10 The reciprocating shaver using the above-mentioned movable and fixed blade structure shown in the figure comprises a fixing frame 2 for fixing the fixed blade 1, and a pressing member 4 for supporting the movable blade 3 from below is provided below the movable blade 3, and the pressing member 4 makes the head of the movable blade tooth 31 stick to the bottom surface of the tooth body 131 of the fixed blade tooth 13, and makes the movable blade 3 deform toward one side of the fixed blade 1 with the head of the movable blade tooth 31 as the fulcrum so that the tooth body of the movable blade tooth 31 is close to the tooth body 131 of the fixed blade tooth 13.
[0035] The manufacturing method is as follows:
[0036] like Figure 3a As shown, the movable knife 3 is placed on the fixed frame 2, and the fixed knife 1 is installed; Figure 3b As shown, initially, the head of the movable blade tooth 31 contacts the bottom surface of the tooth body 131 of the fixed blade tooth 13, and the fixed blade 1 and the fixed frame 2 have not yet been installed in place; Figure 3c As shown, the fixed knife 1 is further installed on the fixed frame 2. When the fixed knife 1 is used as a reference, the movable knife 3 is supported on the tooth body 131 of the fixed knife tooth 13 with the head of the movable knife tooth 31, and under the action of the top pressure piece 4, the movable knife 3 elastically deforms toward one side of the fixed blade 11 to reduce the gap between the movable knife 3 and the fixed blade 11, so that the tooth body of the movable knife tooth 31 is close to the tooth body 131 of the fixed knife tooth 13, and the fixed knife 1 is fixed to the fixed frame 2.
[0037] The reciprocating razor has a simple structure and a simple manufacturing process, can effectively overcome the influence of production errors, is conducive to improving the fit between the fixed blade teeth and the movable blade teeth, and improves the cutting sharpness.
[0038] For the entire movable blade tooth 31, the head of the movable blade tooth 31 has the best fit with the tooth body of the fixed blade tooth 13, and the gap between the tooth body of the movable blade tooth 31 and the tooth body 131 of the fixed blade tooth 13 is between 0 and 0.05 mm, preferably between 0 and 0.02 mm, which can effectively ensure the fit between the head of the movable blade tooth 31 and the position near the head and the fixed blade tooth 13. Since the head of the movable blade tooth 31 is close to the outside, it cuts the hair first, thereby improving the sharpness of cutting the hair.
[0039] like Figure 1 , 3a to Figure 4 In the illustrated embodiment, the fixing frame 2 is provided with an upwardly protruding rib 27 along the front-to-back direction, and the rib 27 serves as a pressing member 4 to press against the root of the moving blade teeth 31 or the root position of the moving blade 3 close to the moving blade teeth 31 .
[0040] A clearance groove 25 for avoiding the fixed blade teeth 13 is provided on the left side and / or the right side of the fixing frame 2 .
[0041] like Figure 6 In the illustrated embodiment, the corners 28 of the fixing frame 2 located in the front-rear direction of the air-avoiding groove 25 serve as the pressing members 4 to press against the roots of the moving blade teeth 31 or the roots of the moving blade 3 close to the moving blade teeth 31 .
[0042] like Figure 5 and Figure 7In the embodiment shown, in order to make the movable blade 3 fit better on the fixed blade 11, the fixed frame 2 is further provided with a ball 45 as a pressing member 4 to support the bottom of the movable blade 3 from below. When the fixed blade 11 is an arc-shaped structure in the left-right direction, the ball 45 is higher than the rib 27 or the corner 28, and the friction between the movable blade 3 and the pressing member is reduced by the ball 45. At the same time, the ball is located on the inner side of the rib 27 or the corner 28, and is closer to the middle of the movable blade 3 than the rib 27 or the corner 28, which is conducive to reducing the gap between the movable blade and the middle area of the fixed blade, when the middle area of the fixed blade 11 is provided with a middle hair inlet hole and the movable blade is provided with a middle cutting tooth, so as to improve the cutting sharpness of the middle area of the reciprocating razor.
[0043] Or Figure 8 In the illustrated embodiment, the fixing frame 2 is provided with a ball 45 , and only the ball 45 is used as a pressing member 4 to press on the bottom of the moving knife 3 and toward the side of the moving knife teeth 31 .
[0044] Preferably, the fixed blade 1 is integrally formed of a metal sheet, and the fixed blade 11 is integrally formed with a downwardly facing edging 12 on the front and rear ends, and the edging 12 smoothly transitions with the top of the fixed blade 11, and the fixing frame 2 includes a metal bracket 201, and the metal bracket 201 is provided with a concave mounting groove 21 on the outer edges of the front and rear ends for the edging 12 to be inserted, and the edging 12 is fixed in the mounting groove 21 by welding, and the outer side surface of the edging 12 is aligned or substantially aligned with the outer side surface of the metal bracket 201. By integrally forming the downwardly facing edging at both ends, sharp edges are avoided at both ends of the fixed blade, and there is no need to use additional protective elements to cover the outside for protection, and the edging 12 smoothly transitions with the fixed blade 11, providing a smoother and more comfortable skin feel.
[0045] like Figure 1 As shown, one end of the root of the fixed blade tooth 13 is connected to the fixed blade 11, and the outer end is a free end. The fixed blade tooth 13 is a slender tooth shape, which is easy to hook and comb long hair for cutting. Preferably, the outer end of the fixed blade tooth 13 is formed with a smooth ball head by laser, and the surface of the ball head is smooth, which can reduce the irritation of the tooth tip of the fixed blade tooth to the skin and provide a smooth skin feel.
[0046] The movable knife 3 is connected to a movable knife transmission device for driving the movable knife 3 to reciprocate relative to the fixed knife 1 . The movable knife transmission device includes a movable knife bracket 5 fixedly connected to the movable knife 3 . The bottom of the movable knife bracket 5 is connected to a transmission joint 6 .
[0047] like Fig. 9In the embodiment shown, in order to enable the movable blade transmission device to have a forward and backward sliding guide function on the fixed frame 2, the fixed frame 2 is provided with a guide groove 22 for slidingly guiding the movable blade support 5. Of course, when the reciprocating razor is mounted on an external component, such as a handle, the movable direction of the movable blade transmission device can be restricted by the external component.
[0048] The fixing frame 2 is provided with a ball groove 2011 for mounting the ball 45. Figure 5 , 7 8, the fixing frame 2 comprises a metal bracket 201, and the bottom of the ball groove 2011 is closed, or as shown in FIG. Fig. 9 In the illustrated embodiment, the fixing frame 2 includes a metal bracket 201, on which a plastic frame 202 is fixed. A ball groove 2011 on the metal bracket 201 passes through from top to bottom, and the plastic frame 202 seals the bottom of the descending ball groove 2011 to prevent the ball 45 from falling out.
Claims
1. A movable and fixed blade structure, characterized in that: The invention comprises a fixed knife (1) and a sheet-shaped movable knife (3), wherein the fixed knife (1) comprises a sheet-shaped fixed blade (11) and fixed knife teeth (13) arranged in a row on the left side and / or the right side of the fixed blade (11), a hair feeding groove (15) is arranged between two adjacent fixed knife teeth (13), the movable knife (3) is provided with movable knife teeth (31) located below the fixed knife teeth (13), the movable knife (3) is located below the fixed blade (11), and when the head of the movable knife tooth (31) contacts the bottom surface of the tooth body (131) of the fixed knife tooth (13), a gap exists between the movable knife (3) and the fixed blade (11).
2. A movable and fixed blade structure according to claim 1, characterized in that: The fixed blade (11) is an arc-shaped structure in the left-right direction, with its concave side facing downwards; the movable blade (3) is a straight structure or an arc-shaped structure in the left-right direction; when the movable blade (3) is an arc-shaped structure and its concave side faces downwards, the curvature of the movable blade (3) is smaller than the curvature of the fixed blade (11).
3. A movable and fixed blade structure according to claim 1, characterized in that: The fixed blade (11) is a straight structure in the left-right direction, and the movable blade (3) is an arc-shaped structure in the left-right direction with the concave side facing upward.
4. A reciprocating shaver with a movable and fixed blade structure according to any one of claims 1 to 3, characterized in that: The invention comprises a fixing frame (2) for fixing a fixed knife (1); a pressing member (4) for supporting the movable knife (3) from below is provided below the movable knife (3); the pressing member (4) causes the head of the movable knife tooth (31) to stick to the bottom surface of the tooth body (131) of the fixed knife tooth (13), and causes the movable knife (3) to deform toward one side of the fixed knife (1) with the head of the movable knife tooth (31) as a fulcrum so that the tooth body of the movable knife tooth (31) is close to the tooth body (131) of the fixed knife tooth (13); and the movable knife (3) is connected to a movable knife transmission device for driving the movable knife (3) to reciprocate relative to the fixed knife (1).
5. A reciprocating shaver according to claim 4, characterized in that: The gap between the tooth body of the movable blade tooth (31) and the tooth body (131) of the fixed blade tooth (13) is between 0 and 0.05 mm.
6. A reciprocating shaver according to claim 4, characterized in that: The fixing frame (2) is provided with a convex rib (27) protruding upward in the front-to-back direction, and the convex rib (27) serves as a pressing member (4) pressing against the root of the moving blade teeth (31) or the root position of the moving blade (3) close to the moving blade teeth (31).
7. A reciprocating shaver according to claim 4, characterized in that: A clearance groove (25) for avoiding the fixed blade teeth (13) is provided on the left side and / or the right side of the fixed frame (2); and the corners (28) on the fixed frame (2) located in the front-rear direction of the clearance groove (25) serve as a pressing member (4) to press against the root of the movable blade teeth (31) or the root position of the movable blade (3) close to the movable blade teeth (31).
8. A reciprocating shaver according to claim 5 or 6, characterized in that: The fixed frame (2) is also provided with a ball (45) as a pressure piece (4) supporting the bottom of the movable blade (3) from below. When the fixed blade (11) is an arc-shaped structure in the left-right direction, the ball (45) is higher than the convex rib (27) or the corner (28).
9. A reciprocating shaver according to claim 4, characterized in that: A ball (45) is provided on the fixing frame (2), and the ball (45) serves as a pressing member (4) to press on the bottom of the moving knife (3) and deviate to one side of the moving knife teeth (31).
10. A reciprocating shaver according to any one of claims 4 to 7 and 9, characterized in that: The fixed blade (1) is integrally formed of a metal plate, and the fixed blade (11) is integrally formed with a downwardly directed edge (12) at the front and rear ends, and the edge (12) smoothly transitions with the top of the fixed blade (11). The fixing frame (2) comprises a metal bracket (201), and the metal bracket (201) is provided with an inwardly concave mounting groove (21) on the outer edges of the front and rear ends for the edge (12) to be inserted into. The edge (12) is fixed in the mounting groove (21) by welding, and the outer side surface of the edge (12) is aligned or substantially aligned with the outer side surface of the metal bracket (201). The root of the fixed blade tooth (13) is connected to the fixed blade (11), and the outer end is a free end. The outer end of the fixed blade tooth (13) is provided with a smooth ball head (134).