Tool bit assembly
Through the combination of an integrated central bracket and an elastic reset mechanism, the problems of loose structure and hair accumulation of floating shaver heads are solved, achieving a compact cutting head assembly design and efficient facial fit.
Patent Information
- Application Number
- CN202323630026.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-28
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2033-12-28
AI Technical Summary
The split design of existing floating shaver heads results in loose structures and easy accumulation of fine hair, which also affects the compactness of the overall structure and the difficulty of assembly.
The integrated central bracket design is adopted, combining the cutting device, central knife, external knife and elastic reset mechanism to ensure the floating effect of the cutting head while achieving a compact assembly relationship. Through the fixed connection between the center and peripheral elastic parts, the cutting head is ensured in the initial position. Reset and limit the rotation angle of the outer tool between 20°-30° through a specific outer tool holder and rotation shaft design.
It realizes compact assembly of the cutting head assembly, avoids hair accumulation, and meets the needs of all-round facial fit, maintains the compactness of the structure and cutting efficiency.
Smart Images
Figure CN222177824U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of electric shavers, and in particular to a shaver head assembly. Background Art
[0002] It has been disclosed in the related prior art that floating razor heads can be used to float and fit the facial contour for hair removal. A multi-head razor has a better effect of fitting the facial contour because each of its heads can float freely, but accordingly, the number of head components of the razor is also increased accordingly, and the mutual assembly relationship between the heads will directly affect the compactness of the overall structure and the difficulty of assembly. Existing floating razor heads usually adopt a split head bracket structure, that is, the heads are relatively independent of each other. Such a design is relatively better in floating effect, but it brings about a loose structure, and fine hair is easily accumulated between the loose structure. Utility Model Content
[0003] The present application provides a cutter head assembly, which adopts an integrated center bracket to achieve a compact assembly relationship while ensuring the floating effect of the cutter head.
[0004] The present application provides a cutter head assembly, comprising: a cutting device, the cutting device comprising: an integrated center bracket, the integrated center bracket being provided with a center hole and a plurality of peripheral holes, a center knife, the center knife being arranged in the center hole, an outer knife, the outer knife being rotatably connected to the peripheral hole, and an elastic reset mechanism, the elastic reset mechanism comprising a center elastic member and a peripheral elastic member, the center elastic member and the peripheral elastic member being both fixedly connected relative to the integrated center bracket, the center elastic member being connected to the center knife for resetting the center knife to an initial position, and the peripheral elastic member being used for resetting the outer knife to an initial position.
[0005] Furthermore, the mounting frame is fixedly connected to the bottom of the central hole of the integrated central bracket, and the central elastic member is installed on the mounting frame.
[0006] Furthermore, the outer knife includes an outer knife holder and a cutting knife assembly, the cutting knife assembly is installed in the outer knife holder, and the outer knife holder is connected to the outer peripheral hole through a rotating shaft.
[0007] Furthermore, the rotating shaft is installed on the inner wall of the peripheral hole, and the contour shape of the peripheral hole is formed by the intersection of two smooth curves, one of which encloses a larger space and the other encloses a smaller space. The curve enclosed by the smaller space is close to the center hole, and the rotating shaft is located at the intersection of the two curves.
[0008] Furthermore, the outer tool holder has a connecting hole, the rotating shaft is inserted into the connecting hole, and a protrusion is also provided on the rotating shaft. The length of the protrusion along the axial direction of the rotating shaft is smaller than the length of the rotating shaft, and one end of the protrusion blocks the outer wall of the outer tool holder from contacting the inner wall of the outer hole.
[0009] Furthermore, the number of the peripheral holes is four, and the middle part of the integrated central bracket is higher than the periphery.
[0010] Further, the outer knife has a first extreme position and a second extreme position, and the outer knife rotates between the first extreme position and the second extreme position, wherein: when the outer knife rotates clockwise and is blocked by the integrated center bracket, it is in the first extreme position, and the angle between the top surface of the outer knife and the top surface of the center knife facing the top surface of the outer knife is greater than 180°; and, when the outer knife rotates counterclockwise and is blocked by the integrated center bracket, it is in the second extreme position, and the angle between the top surface of the outer knife and the top surface of the center knife facing the top surface of the outer knife is less than 180° but greater than 90°.
[0011] Furthermore, an angle α between the top surface of the outer cutter at the first extreme position and the second extreme position satisfies the following relationship: 20°≤α≤30°.
[0012] Furthermore, the peripheral elastic member includes a mounting portion and an elastic arm, the mounting portion is mounted between adjacent outer knives and connected to the integrated central bracket, one end of the elastic arm is connected to the mounting portion, and the other end abuts against the outer knife.
[0013] Furthermore, the integrated central support has a top cover and side support plates, and the top cover and the side support plates form an internal accommodating cavity.
[0014] The technical solution provided by the embodiments of the present application may have the following beneficial effects:
[0015] 1. The cutter head assembly uses an integrated central bracket as an assembly platform, which enables both the central cutter and the outer cutter to float on the central bracket, and the cutter heads are connected by the central bracket, making the assembly more compact and less prone to the accumulation of fine hair;
[0016] 2. The outer knife swing angle is set between 20°-30°, which not only meets the requirement of the knife head to fit the face swing in all directions, but also has relatively good overall structural compactness.
[0017] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1is a schematic diagram of the exploded structure of a cutter head assembly according to an embodiment of the present application;
[0019] Figure 2 1 is a schematic diagram of the installation structure of the center knife and the outer knife of an embodiment of the present application, in which the three outer knives on the integrated center bracket are removed;
[0020] Figure 3 is a schematic structural diagram of an integrated central support according to an embodiment of the present application;
[0021] Figure 4 yes Figure 1 A schematic diagram of the exploded structure of a partial structure of the cutter head assembly and a protective cover shown in FIG.
[0022] Figure 5 It is a schematic diagram of the decomposed structure of the outer knife floating in one embodiment of the present application, in which two outer knives are respectively in a first limit position and a second limit position corresponding to a peripheral hole position;
[0023] Figure 6 It is a structural schematic diagram of an elastic reset mechanism according to an embodiment of the present application;
[0024] Figure 7 yes Figure 2 A partial enlarged view of the middle A;
[0025] Figure 8 It is a schematic diagram of the outer tool holder structure of an embodiment of the present application.
[0026] Reference numerals:
[0027] 100. Cutting device; 200. Transmission device; 300. Bottom cover; 400. Protective cover; 11. Integrated center bracket; 111. Center hole; 112. Peripheral hole; 1121. Inner wall of peripheral hole; 113. Reinforcing rib; 114. Top cover; 115. Side support plate; 12. Center knife; 13. Outer knife; 131. Rotating shaft; 1311. Bump; 132. Convex edge; 133. Outer knife holder; 1331. Connecting hole; 1332. Outer wall of outer knife holder; 134. Cutting knife assembly; 14. Elastic reset mechanism; 141. Center elastic member; 142. Peripheral elastic member; 1421. Mounting portion; 1422. Elastic arm; 15. Mounting frame. DETAILED DESCRIPTION
[0028] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The methods described in the following exemplary embodiments do not represent all methods consistent with the present application. Instead, they are only examples of devices and methods consistent with some aspects of the present application as detailed in the attached claims.
[0029] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The singular forms of "a", "said" and "the" used in this application and the appended claims are also intended to include plural forms unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.
[0030] It should be understood that the words "first", "second" and similar words used in the specification and claims of this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "an" do not indicate a quantitative limitation, but rather indicate the presence of at least one. Unless otherwise indicated, words such as "front", "rear", "lower" and / or "upper" are used for ease of description only and are not limited to a position or a spatial orientation. Words such as "include" or "comprises" and similar words mean that the elements or objects appearing before "include" or "comprises" include the elements or objects listed after "include" or "comprises" and their equivalents, and do not exclude other elements or objects. Words such as "connected" or "connected" and similar words are not limited to physical or mechanical connections, and may include electrical connections, whether direct or indirect.
[0031] The embodiments of the present application are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the features of the following embodiments can be combined with each other.
[0032] like Figure 1 As shown, the present application discloses a cutter head assembly, which is assembled on a razor handle and is used to shave beard hair. The cutter head of the razor has various forms. In this embodiment, the cutter head assembly adopts a multi-cutter head method. The cutter head assembly includes a cutting device 100, a transmission device 200 and a bottom cover 300, wherein the transmission device 200 and the bottom cover 300 can be disassembled and connected by means of magnetism, buckles or screws.
[0033] like Figure 2 and 4 As shown, the cutting device 100 includes: an integrated central support 11 , a central knife 12 , an outer knife 13 and an elastic reset mechanism 14 .
[0034] The integrated central support 11 is provided with a central hole 111 and a plurality of peripheral holes 112, wherein the central hole 111 is located at the central position of the integrated central support 11, and the peripheral holes 112 are evenly distributed diagonally around the central hole 111. When the number of peripheral holes 112 is greater, the number of outer knives 13 assembled therewith is also greater, and the corresponding overall area of the face fitting is also larger, and the cutting efficiency of the cutting device 100 is also higher. In this embodiment, four peripheral holes 112 are arranged around the central hole 111.
[0035] like Figure 6 As shown, the elastic reset mechanism 14 includes a central elastic member 141 and a peripheral elastic member 142. Figure 4 As shown, the central elastic member 141 and the peripheral elastic member 142 are both fixedly connected relative to the integrated central support 11. The central elastic member 141 is connected to the central knife 12 to reset the central knife 12 to the initial position, and the central knife 12 makes a floating motion in the vertical direction through the central elastic member 141. The peripheral elastic member 142 is used to reset the outer knife 13 to the initial position. In this embodiment, the integrated central support 11 is used to provide installation positions for the central elastic member 141 and the peripheral elastic member 142, and the elastic reset member is no longer designed based on a single cutter head, so there is no need to consider the coordination and compactness between the cutter heads.
[0036] As a preferred implementation of the central elastic member 141 in this embodiment, the cutting device 100 further includes a mounting frame 15 , which is fixedly mounted on the bottom of the central hole 111 of the integrated central bracket 11 , and the central elastic member 141 is mounted on the mounting frame 15 .
[0037] As a preferred implementation of the peripheral elastic member 142 in this embodiment, the peripheral elastic member 142 includes a mounting portion 1421 and an elastic arm 1422. Among them, the mounting portion 1421 is installed between adjacent outer knives 13 and connected to the integrated center bracket 11. One end of the elastic arm 1422 is connected to the mounting portion 1421, and the other end abuts against the outer knife 13 to reset the outer knife 13 to the initial position. Each peripheral elastic member 142 is provided with two elastic arms 1422, and the elastic arms 1422 extend symmetrically outward to abut against the outer knife 13. This arrangement of the peripheral elastic member 142 makes fuller use of the space of the integrated center bracket 11. The mounting portion 1421 spans across two peripheral holes and can be stably connected in a simple connection manner of direct fixed connection.
[0038] like Figure 4 As shown, the outer knife 13 includes an outer knife holder 133 and a cutting knife assembly 134 . The cutting knife assembly 134 is installed in the outer knife holder 133 . The outer knife holder 133 is connected to the peripheral hole 112 via a rotating shaft 131 .
[0039] like Figure 3As shown, the contour shape of the peripheral hole 112 of the integrated central bracket 11 is formed by the intersection of two smooth curves, one of which encloses a large space, and the other encloses a small space. The curve encloses a small space close to the central hole 111, and the rotation shaft 131 is installed at the intersection of the two curves in the inner wall of the peripheral hole 112. In this example, the peripheral hole 112 and the central hole 111 are in the shape of a flower, and the cutter head located at the periphery needs to be rotated inward to fit the face. At this time, the position of its rotation shaft 131 will affect the actual fitting effect. In this embodiment, the rotation shaft 131 is relatively closer to the middle, so that the upturned area of the cutter head after rotation is increased to better fit the face.
[0040] Combination Figure 7 , Figure 8 As shown, the outer tool holder 133 has a connecting hole 1331, and the rotating shaft 131 is inserted into the connecting hole 1331. The rotating shaft 131 is also provided with a protrusion 1311, and the length of the protrusion 1311 along the axial direction of the rotating shaft 131 is less than the length of the rotating shaft 131, that is, the length of the protrusion 1311 needs to be shorter than the rotating shaft 131, wherein the rotating shaft 131 can pass through the connecting hole 1331, while the protrusion 1311 cannot pass through the connecting hole 1331. The arrangement of the protrusion 1311 on the rotating shaft 131 ensures that there is always a gap between the outer wall 1332 of the outer tool holder 133 and the inner wall 1121 of the peripheral hole 112, so that the outer tool holder 133 rotates more smoothly.
[0041] In some embodiments, the cutter head assembly may further include a protective cover 400 disposed outside the cutting device 100. The protective cover 400 can prevent the user from touching the cutting device 100, and can also prevent external dust, water, etc. from directly entering the cutting device 100 to a certain extent.
[0042] exist Figure 3 Based on the combination Figure 5As shown, the integrated center support 11 is a structure with a high center and low surroundings. In this case, the angle β formed by the center plane of the integrated center support 11 and the surrounding planes is greater than 180°, and the outer knife 13 installed at the intersection of the two planes can do a seesaw motion with the two planes as end points. In this embodiment, the center plane is the plane where the shorter curve of the peripheral hole position 112 is located, and the surrounding planes are the planes where the longer curve of the peripheral hole position 112 is located. A convex edge 132 is provided on the top of the outer knife 13, and the convex edge 132 abuts against the integrated center support 11 when the outer knife 13 is in the first extreme position and the second extreme position, respectively, to limit the further rotation of the outer knife 13. Among them, the first extreme position is: when the outer knife 13 rotates clockwise, and the convex edge 132 close to the center knife 12 abuts against the integrated center bracket 11, at this time, the angle between the top surface of the outer knife 13 and the top surface of the center knife 12 facing the top surface of the outer knife 13 is greater than 180°; the second extreme position is: when the outer knife 13 rotates counterclockwise, and the convex edge 132 away from the center knife 12 abuts against the integrated center bracket 11, that is, the extreme state in which the outer knife 13 can rotate counterclockwise, at this time, the angle between the top surface of the outer knife 13 and the top surface of the center knife 12 facing the top surface of the outer knife 13 is less than 180° but greater than 90°.
[0043] Preferably, the angle α between the first extreme position and the second extreme position satisfies the following relationship: 20°≤α≤30°. When the angle α≥20°, the shaver has a larger floating angle and can better fit the facial contour; when the angle α is larger, it means that the floating swing movement of the outer knife 13 is more flexible, but correspondingly, the assembly interval between the outer knife 13 and the integrated center bracket 11 is also larger. When the angle α≤30°, the assembly space required for the outer knife is relatively suitable, and the overall structure is relatively compact. Therefore, setting the angle α within the range of 20° to 30° can balance the compactness of the overall structure and the cutting effect.
[0044] For the split cutter head holder, each cutter head holder is connected to the central body as an independent component. However, since the central body can provide a limited connection area, the area that the split cutter head holder can expand circumferentially is limited, which in turn limits the internal storage space of the split cutter head holder. In addition, the split cutter head holder itself has many components, which further reduces the space that can store hair inside the cutter head, resulting in a small overall internal storage space of the split cutter head holder.
[0045] like Figure 3As shown, the integrated central support 11 has a top cover 114 and a side support plate 115. The edges of the top cover 114 are connected to the upper edges of the side support plates 115. The top cover 114 and the side support plates 115 form a receiving chamber inside the enclosure to receive the hair shaved by the razor. Since there is only a cutter head component inside the receiving chamber, compared with the split support, the complicated structure is avoided to make the internal space larger. Moreover, since the cutter heads are arranged on the integrated central support 11, the distance between the cutter heads is also increased to a certain extent, thereby further increasing the receiving space inside the cutting device 100.
[0046] In addition, in some embodiments, a reinforcing rib 113 may be provided in the integrated central support 11 to enhance the structural stability of the integrated central support 11 .
[0047] The above are only preferred embodiments of the present application, and are not intended to limit the present application in any form. Although the present application has been disclosed as above with preferred embodiments, it is not intended to limit the present application. Any technician familiar with the profession can make some changes or modify the technical contents disclosed above into equivalent embodiments with equivalent changes without departing from the scope of the technical solution of the present application. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application still fall within the scope of the technical solution of the present application.
Claims
1. A cutter head assembly, comprising: The cutting device (100) is characterized in that the cutting device (100) comprises: An integrated central support (11), wherein the integrated central support (11) is provided with a central hole (111) and a plurality of peripheral holes (112); A center knife (12), wherein the center knife (12) is arranged in the center hole (111); An outer knife (13), the outer knife (13) being rotatably connected to the outer peripheral hole (112); An elastic reset mechanism (14), the elastic reset mechanism (14) comprising a central elastic member (141) and a peripheral elastic member (142), the central elastic member (141) and the peripheral elastic member (142) being fixedly connected relative to the integrated central support (11), the central elastic member (141) being connected to the central knife (12) for resetting the central knife (12) to an initial position, and the peripheral elastic member (142) being used for resetting the outer knife (13) to an initial position.
2. The cutter head assembly according to claim 1, characterized in that: It also includes a mounting frame (15), wherein the mounting frame (15) is fixedly connected to the bottom of the central hole (111) of the integrated central support (11), and the central elastic member (141) is mounted on the mounting frame (15).
3. The cutter head assembly according to claim 1 or 2, characterized in that: The outer knife (13) comprises an outer knife frame (133) and a cutting knife assembly (134); the cutting knife assembly (134) is installed in the outer knife frame (133); and the outer knife frame (133) is connected to the outer peripheral hole (112) via a rotating shaft (131).
4. The cutter head assembly according to claim 3, characterized in that: The rotating shaft (131) is installed on the inner wall (1121) of the peripheral hole (112); the contour of the peripheral hole (112) is formed by the intersection of two smooth curves, wherein one curve encloses a larger space and the other curve encloses a smaller space, the curve enclosing a smaller space is close to the central hole (111), and the rotating shaft (131) is located at the intersection of the two curves.
5. The cutter head assembly according to claim 3, characterized in that: The outer tool holder (133) is provided with a connecting hole (1331), the rotating shaft (131) is inserted into the connecting hole (1331), and the rotating shaft (131) is also provided with a protrusion (1311), the length of the protrusion (1311) along the axial direction of the rotating shaft (131) is smaller than the length of the rotating shaft (131), and one end of the protrusion (1311) blocks the outer wall (1332) of the outer tool holder (133) from contacting the inner wall (1121) of the peripheral hole (112).
6. The cutter head assembly according to claim 1 or 2, characterized in that: The number of the peripheral hole positions (112) is four, and the middle portion of the integrated central support (11) is higher than the periphery.
7. The cutter head assembly according to claim 6, characterized in that: The outer knife (13) has a first extreme position and a second extreme position, and the outer knife (13) rotates between the first extreme position and the second extreme position, wherein: When the outer knife (13) rotates clockwise and is blocked by the integrated central support (11), it is in the first limit position, and the angle between the top surface of the outer knife (13) and the top surface of the central knife (12) facing the top surface of the outer knife (13) is greater than 180°, and, When the outer knife (13) rotates counterclockwise and is blocked by the integrated center bracket (11), it is in the second extreme position, and the angle between the top surface of the outer knife (13) and the top surface of the center knife (12) facing the top surface of the outer knife (13) is less than 180° but greater than 90°.
8. The cutter head assembly according to claim 7, characterized in that: The included angle α between the top surface of the outer knife (13) at the first extreme position and the second extreme position satisfies the following relationship: 20°≤α≤30°.
9. The cutter head assembly according to claim 1 or 2, characterized in that: The peripheral elastic member (142) comprises a mounting portion (1421) and an elastic arm (1422); the mounting portion (1421) is mounted between adjacent outer knives (13) and connected to the integrated central support (11); one end of the elastic arm (1422) is connected to the mounting portion (1421), and the other end abuts against the outer knife (13).
10. The cutter head assembly according to claim 1 or 2, characterized in that: The integrated central support (11) has a top cover (114) and a side support plate (115), and the top cover (114) and the side support plate (115) form an internal accommodating cavity.