Moving cutter assembly, cutter head module and electric shaver

Abstract

The utility model provides a movable cutter assembly, a cutter head module and an electric shaver. Wherein the movable cutter assembly comprises a movable cutter and a movable cutter holder, the movable cutter comprises a body and a tooth part which extend in the first direction, and the tooth part is connected to the side edge, extending in the first direction, of the body; a fixing hole is formed in the body and penetrates through the body in the thickness direction of the body. The movable cutter holder comprises a holder body, a hot melting convex part and a connecting part, the hot melting convex part is arranged on the side, facing the movable cutter, of the holder body, and the hot melting convex part is inserted into the fixing hole and is in hot melting connection with the movable cutter at the fixing hole; the connecting part is arranged on the side, away from the movable cutter, of the base and used for being connected with a driving device. According to the moving cutter assembly, the hot melting convex part of the moving cutter holder is in hot melting connection with the moving cutter, so that the moving cutter is firmly connected with the moving cutter holder, the moving cutter and the moving cutter holder are prevented from loosening or falling off in the using process, and the noise between the moving cutter and the moving cutter holder can be reduced.

Description

Technical Field

[0001] The present application relates to the field of personal care appliances, and in particular to a movable blade assembly, a blade head module and an electric shaver. Background Art

[0002] The drive assembly in an electric shaver reciprocates the blade holder, which in turn transmits power to the moving blade, causing it to also reciprocate. Therefore, a secure connection between the moving blade and the blade holder is crucial. A loose connection between the blade and the blade holder can lead to a number of adverse consequences, including excessive noise and increased wear and tear.

[0003] The above content is only used to assist in understanding the technical solution of the utility model and does not constitute an admission that the above content is prior art. Utility Model Content

[0004] In view of the above problems, the present invention proposes a movable knife assembly, which aims to solve the technical problem of the loose connection between the movable knife and the movable knife seat.

[0005] To achieve the above-mentioned objectives, the present invention proposes a movable knife assembly comprising a movable knife and a movable knife seat. The movable knife comprises a body and a tooth portion, both extending in a first direction, wherein the tooth portion is connected to a side of the body extending in the first direction; the body is provided with a fixing hole, which penetrates the body along the thickness direction of the body; the movable knife seat comprises a seat body, a hot melt protrusion, and a connecting portion, wherein the hot melt protrusion is provided on a side of the seat body facing the movable knife, the hot melt protrusion is inserted into the fixing hole, and is hot-melt-connected to the movable knife at the fixing hole; the connecting portion is provided on a side of the seat body facing away from the movable knife, and is used to connect to a drive device.

[0006] Furthermore, a connecting protrusion is provided on the side of the seat facing the movable knife; a connecting hole is provided on the main body, the connecting hole passes through the main body along the thickness direction of the main body, and the connecting protrusion is inserted into the connecting hole.

[0007] Furthermore, the length of the connecting protrusion in the first direction is greater than the length of the hot melt protrusion in the first direction; and / or,

[0008] The length of the connecting protrusion in the second direction is greater than the length of the hot melt protrusion in the second direction, and the first direction, the second direction and the thickness direction are arranged perpendicular to each other.

[0009] Furthermore, the main body is recessed toward the movable knife seat to form an assembly groove, the bottom wall of the assembly groove is provided with the fixing hole and the connecting hole, and the end of the hot-melt protrusion after hot-melt is in the assembly groove.

[0010] Furthermore, the connecting hole extends to a portion of the side wall of the assembly groove adjacent to the bottom wall of the assembly groove, and two ends of the connecting protrusion in the first direction respectively abut against the side wall of the assembly groove and the bottom wall of the assembly groove.

[0011] Furthermore, the movable knife seat includes a plurality of the hot melt protrusions; the plurality of the hot melt protrusions are distributed on both sides of the connecting protrusion in the first direction, and the connecting protrusion is arranged corresponding to the position of the connecting portion.

[0012] The present invention also proposes a cutter head module, comprising a stationary knife, a bracket and the above-mentioned movable knife assembly, wherein the stationary knife is fixedly connected to the bracket; the movable knife assembly is located on a side of the stationary knife close to the bracket, and the movable knife assembly can be movably placed on the bracket.

[0013] Furthermore, the cutter head module also includes at least two elastic members; one end of the elastic member abuts against the seat body, and the other end of the elastic member abuts against the bracket.

[0014] Furthermore, the elastic member is a spring, and at least two first spring seats are protruding from the side of the seat body facing away from the movable knife, and the at least two first spring seats are respectively arranged on both sides of the connecting part in the first direction; at least two second spring seats are protruding from the side of the bracket facing the seat body, and each second spring seat is arranged corresponding to each first spring seat; the two ends of the spring are respectively sleeved on the first spring seat and the second spring seat.

[0015] The utility model also provides an electric shaver, comprising the above-mentioned cutter head module.

[0016] The movable knife assembly of the present invention includes a movable knife and a movable knife seat. The movable knife includes a main body and a tooth portion, both extending in a first direction. The tooth portion is connected to the side of the main body extending in the first direction; a fixing hole is provided on the main body, and the fixing hole passes through the main body along the thickness direction of the main body. The movable knife seat includes a seat body, a hot melt protrusion and a connecting portion. The hot melt protrusion is provided on the side of the seat body facing the movable knife, the hot melt protrusion is inserted into the fixing hole, and is hot-melted and connected to the movable knife at the fixing hole; the connecting portion is provided on the side of the seat body away from the movable knife, and the connecting portion is used to connect to the driving device. The movable knife assembly of this embodiment connects the movable knife firmly to the movable knife seat by hot-melting the hot melt protrusion of the movable knife seat to the movable knife, ensuring that the movable knife and the movable knife seat will not loosen or fall off during use, reducing the noise between the movable knife and the movable knife seat, and reducing the wear of the movable knife. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 Shows a structural schematic diagram of an embodiment of the cutter head module of the utility model;

[0019] Figure 2 for Figure 1 Schematic diagram of the structure of the middle cutter head module from another perspective;

[0020] Figure 3 for Figure 1 Exploded view of the middle cutter head module;

[0021] Figure 4 for Figure 2 Schematic diagram of the structure of the middle moving knife assembly;

[0022] Figure 5 for Figure 4 Exploded view of the middle moving knife assembly;

[0023] Figure 6 for Figure 5 A schematic diagram of the structure of the middle movable knife assembly from another perspective;

[0024] Figure 7 for Figure 1 Top view of the middle cutter head module;

[0025] Figure 8 for Figure 7 Cross-sectional view along VIII-VIII.

[0026] Description of Figure Numbers:

[0027] Label name Label name Label name 100 Moving knife assembly 12 Tooth 23 Connection 10 Surgery 20 Moving knife block 30 bracket 11 Ontology 21 base body 31 Second spring seat 1111 connection hole 211 First spring seat 40 elastic parts 1112 fixing holes 112 Mounting slot 50 Static Knife 100 Moving knife assembly 221 Connecting bumps 200 Cutting head module 10 Surgery 222 Hot melt protrusion

[0028] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0030] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0031] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features specified as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing throughout the text is to include three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that meet both A and B.

[0032] The utility model provides a movable knife assembly.

[0033] Reference Figure 1 、 Figure 2 、 Figure 3 、 Figure 5 as well as Figure 6In an embodiment of the present invention, the movable blade assembly 100 includes a movable blade 10 and a movable blade holder 20. The movable blade 10 generally refers to the moving component in the razor head, and is usually composed of one or more rows of blades. These blades cooperate with the static blade 50 to cut the hair. The movable blade 10 is generally sharp and has good cutting ability to ensure a clean and quick shaving effect. The outer contour of the movable blade 10 is usually rectangular. The outer contour of the movable blade 10 can also be set in other shapes, which are not listed here. The movable blade 10 is usually made of stainless steel, such as 3Cr13, 4Cr13, and 6Cr13 forsteritic stainless steel. Since stainless steel has good strength and ductility, the stainless steel material can be pressed into a thin sheet through a stamping process, and the tooth part 12 can also be stamped and formed in one go. The movable blade holder 20 is a component that supports and fixes the movable blade 10. In an electric shaver, when the shaver is turned on, the drive device generates reciprocating linear motion. This motion is transmitted to the movable knife 10 through the movable knife holder 20, causing it to reciprocate at high speed, thereby cutting the hair.

[0034] Among them, the movable knife 10 includes a main body 11 and a tooth portion 12, both of which extend along the first direction. The main body 11 is the main part of the movable knife 10. A fixing hole 1112 is provided on the main body 11, and the fixing hole 1112 passes through the main body 11 along the thickness direction of the main body 11. The main body 11 cooperates with the movable knife holder 20 through the fixing hole 1112, so that the movable knife holder 20 supports and fixes the movable knife 10. The tooth portion 12 undertakes the trimming and cutting functions. The tooth portion 12 is connected to the side of the main body 11 extending along the first direction, which can capture and guide the beard that needs to be trimmed or cut, thereby achieving precise trimming and cutting effects.

[0035] The movable blade holder 20 includes a heat-melting protrusion 222, a connecting portion 23, and a base 21. The connecting portion 23 is used to connect to the drive device. Specifically, when the drive device reciprocates, the connecting portion 23 can transmit power and motion, thereby causing the movable blade 10 to reciprocate in a first direction to complete hair cutting.

[0036] The hot melt protrusion 222 is inserted into the fixing hole 1112, so that the movable knife 10 and the movable knife seat 20 are limited. The hot melt protrusion 222 is designed to be able to be hot-melt connected with the movable knife 10 at the fixing hole 1112, so that the movable knife seat 20 and the movable knife 10 are firmly combined together. This connection method can provide a stronger bonding force to ensure that the connection between the movable knife seat 20 and the movable knife 10 is firm and reliable. By hot-melt connecting the hot melt protrusion of the movable knife seat with the movable knife, the noise between the movable knife and the movable knife seat can be reduced, and the wear of the movable knife can also be reduced. At the same time, the hot melt connection also helps to achieve the miniaturization and lightweight of the movable knife assembly 100. Specifically, compared with other connection methods, the hot melt connection does not require additional connecting parts, reduces the number of parts, and reduces the overall volume of the movable knife assembly 100; and the hot melt connection can reduce the size of the connecting parts while improving the structural strength, thereby reducing the overall weight of the movable knife assembly 100. In addition,

[0037] The hot melt protrusion 222 is located on the side of the base 21 facing the movable blade 10, and the connecting portion 23 is located on the side of the base 21 facing away from the movable blade 10. That is, the hot melt protrusion 222 and the connecting portion 23 are respectively located on opposite sides of the base 21 in the thickness direction. The hot melt protrusion 222 and the connecting portion 23 achieve functional partitioning in the thickness direction, which can effectively utilize space and reduce the overall volume of the movable blade assembly 100 while maintaining the functional independence and integrity of each component. Furthermore, distributing components with different functions on both sides in the thickness direction can effectively disperse and transfer the workload, reduce local stress concentration, and extend the service life of the movable blade assembly 100.

[0038] The movable knife assembly 100 provided by the present invention includes a movable knife 10 and a movable knife seat 20. Among them. The movable knife 10 includes a main body 11 and a tooth portion 12 both extending along a first direction, the tooth portion 12 is connected to the side of the main body 11 in the first direction, and a fixing hole 1112 is provided on the main body 11, and the fixing hole 1112 passes through the main body 11 along the thickness direction of the main body 11. The movable knife seat 20 includes a seat body 21, a hot melt protrusion 222 and a connecting portion 23, the hot melt protrusion 222 is provided on the side of the seat body 21 facing the movable knife 10, the hot melt protrusion 222 is inserted into the fixing hole 1112, and is hot-melt connected to the movable knife 10 at the fixing hole 1112; the connecting portion 23 is provided on the side of the seat body 21 away from the movable knife 10, and the connecting portion 23 is used to connect to the driving device. The movable knife assembly 100 of this embodiment is connected firmly to the movable knife 10 and the movable knife seat 20 by hot-melt connection of the hot-melt protrusion 222 of the movable knife seat 20, ensuring that the movable knife 10 and the movable knife seat 20 will not loosen or fall off during use, which can reduce the noise between the movable knife 10 and the movable knife seat 20 and reduce the wear of the movable knife 10.

[0039] Further, refer to Figure 6The base 21 has a connecting protrusion 221 on the side facing the movable blade 10. The main body 11 has a connecting hole 111 that extends through the main body 11 along its thickness, and the connecting protrusion 221 is inserted into the connecting hole 111. The cooperation between the connecting protrusion 221 and the connecting hole 111 provides a force-bearing portion for the movable blade holder 20 to drive the movable blade 10, preventing the hot melt connection between the hot melt protrusion 222 and the movable blade from breaking, thereby ensuring the stability of the connection between the movable blade 10 and the movable blade holder 20.

[0040] In some embodiments, the length of the connecting protrusion 221 in the first direction is greater than the length of the hot melt protrusion 222 in the first direction. In some embodiments, the length of the connecting protrusion 221 in the second direction is greater than the length of the hot melt protrusion 222 in the second direction, and the first, second, and thickness directions are arranged perpendicular to each other. On the one hand, the larger connecting protrusion 221 facilitates the alignment and fixed positioning of the movable blade holder 20 and the movable blade 10; on the other hand, the larger connecting protrusion 221 can withstand greater force and torsion, making the connection between the movable blade 10 and the movable blade holder 20 more secure.

[0041] In one embodiment, referring to Figures 4 to 6 , the main body 11 is recessed toward the movable blade seat 20 to form an assembly groove 112. In this way, a bend is formed between the groove wall of the assembly groove 112 and the tooth portion 12. The bending causes the movable blade 10 to generate a higher bending stress along the bending line, thereby increasing the curvature and load-bearing capacity of the movable blade 10 structure. The bottom wall of the assembly groove 112 is provided with a connecting hole 1111 and a fixing hole 1112, and the end of the hot-melt protrusion 222 after hot melting is in the assembly groove 112. In this way, the assembly groove 112 provides an installation space for the end of the hot-melt protrusion 222 after hot melting, avoiding interference between the end of the hot-melt protrusion 222 after hot melting and the static blade 50, so that the tooth portion 12 of the movable blade 10 is tightly fitted with the static blade 50, and also makes the structure of the movable blade assembly 100 more compact.

[0042] Further, refer to Figure 5 and Figure 6The connecting hole 111 extends to a portion of the side wall of the assembly groove 112 adjacent to the bottom wall of the assembly groove 112, and the two ends of the connecting protrusion 221 in the first direction respectively abut against the side wall of the assembly groove 112 and the bottom wall of the assembly groove 112. In this embodiment, by extending the connecting hole 111 to a portion of the side wall of the assembly groove 112 adjacent to the bottom wall of the assembly groove 112, a portion of the connecting hole 111 is also formed in the side wall of the assembly groove 112. When the connecting protrusion 221 is inserted into the connecting hole, the connecting protrusion 221 is exposed from the side wall of the assembly groove 112. The two ends of the connecting protrusion 221 in the first direction respectively abut against the side wall of the assembly groove 112 and the bottom wall of the assembly groove 112. This can increase the contact area between the body 11 of the movable knife 10 and the connecting protrusion 221, thereby preventing the movable knife 10 from being twisted and deformed due to too small a force-bearing area when the movable knife holder 20 drives the movable knife 10 to reciprocate.

[0043] Further, refer to Figure 4 、 Figure 6 、 Figure 7 as well as Figure 8 The movable blade holder 20 includes a plurality of heat-seal protrusions 222, which are distributed on both sides of the connecting protrusion 221 in the first direction. The connecting protrusions 221 are positioned corresponding to the connection portion 23. This arrangement ensures a stable and reliable connection between the movable blade 10 and the movable blade holder 20. Furthermore, the plurality of heat-seal protrusions 222 are evenly distributed on both sides of the heat-seal protrusion 222 in the first direction.

[0044] In this way, multiple hot-melt bumps can be distributed with the connecting portion 23 as the center, thereby ensuring that the mass distribution of the movable knife seat 20 is uniform, and then the connection between the movable knife seat 20 and the drive shaft is in a balanced state, reducing vibration and imbalance caused by imbalance, and improving the stability of the mechanical transmission.

[0045] The present invention also provides a cutter head module 200. This cutter head module 200 includes a stationary blade 50, a bracket 30, and the aforementioned movable blade assembly 100. The specific structure of the movable blade assembly 100 is similar to that of the aforementioned embodiments. Since this cutter head module 200 utilizes all the technical solutions of all of the aforementioned embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the aforementioned embodiments, and therefore will not be further elaborated here. The stationary blade 50 is fixedly connected to the bracket 30; the movable blade assembly 100 is located on the side of the stationary blade 50 closest to the bracket 30 and is movably mounted on the bracket 30.

[0046] Further, refer to Figure 1 、 Figure 2 、 Figure 7 as well as Figure 8The cutter head module 200 also includes at least two elastic members 40. These elastic members include, but are not limited to, springs and springs. One end of the elastic member 40 abuts the base 21, while the other end abuts the bracket 30. The elastic members 40 ensure that the movable blade 10 maintains a tight fit with the stationary blade 50 during reciprocating motion, achieving efficient trimming and cutting results.

[0047] Further, refer to Figures 5 to 8 The elastic member 40 is a spring. The base body is provided with multiple first spring seats 211 projecting away from the movable blade 10. These first spring seats 211 are located on either side of the connecting portion in the first direction. The bracket 30 is provided with multiple second spring seats 31 projecting toward the base body. Each first spring seat 211 is positioned correspondingly to a second spring seat 31. The ends of the spring are respectively fitted over the first and second spring seats 211, 31. The first and second spring seats 211, 31 provide a fixed position for the spring, ensuring that it does not deflect or move during the reciprocating motion of the movable blade 10, ensuring proper function.

[0048] The present utility model also proposes an electric shaver, which includes the above-mentioned cutter head module 200. The specific structure of the cutter head module 200 refers to the above-mentioned embodiment. Since the electric shaver adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A movable knife assembly, characterized in that: include: A movable knife, the movable knife comprising a body and a tooth portion, both extending in a first direction, the tooth portion being connected to a side of the body extending in the first direction; a fixing hole being provided on the body, the fixing hole penetrating the body along a thickness direction of the body; The movable knife seat includes a seat body, a hot melt protrusion and a connecting part. The hot melt protrusion is arranged on the side of the seat body facing the movable knife, the hot melt protrusion is inserted into the fixing hole, and is hot-melt connected to the movable knife at the fixing hole; the connecting part is arranged on the side of the seat body away from the movable knife, and the connecting part is used to connect to the driving device.

2. The movable knife assembly according to claim 1, wherein: A connecting protrusion is further provided on the side of the seat body facing the movable knife; a connecting hole is provided on the main body, the connecting hole passes through the main body along the thickness direction of the main body, and the connecting protrusion is inserted into the connecting hole.

3. The movable knife assembly according to claim 2, wherein: The length of the connecting protrusion in the first direction is greater than the length of the hot melt protrusion in the first direction; and / or, The length of the connecting protrusion in the second direction is greater than the length of the hot melt protrusion in the second direction, and the first direction, the second direction and the thickness direction are arranged perpendicular to each other.

4. The movable knife assembly according to claim 2, wherein: The main body is recessed toward the movable knife seat to form an assembly groove, the bottom wall of the assembly groove is provided with the fixing hole and the connecting hole, and the end of the hot-melt protrusion after hot-melt is in the assembly groove.

5. The movable knife assembly according to claim 4, characterized in that: The connecting hole extends to a portion of the side wall of the assembly groove adjacent to the bottom wall of the assembly groove, and two ends of the connecting protrusion in the first direction respectively abut against the side wall of the assembly groove and the bottom wall of the assembly groove.

6. The movable knife assembly according to any one of claims 2 to 5, characterized in that: The movable knife seat includes a plurality of the heat-melting protrusions; the plurality of the heat-melting protrusions are distributed on both sides of the connecting protrusion in the first direction, and the connecting protrusion is arranged corresponding to the position of the connecting portion.

7. A cutter head module, characterized in that: It comprises a stationary knife, a bracket and a moving knife assembly as described in any one of claims 1 to 6, wherein the stationary knife is fixedly connected to the bracket; the moving knife assembly is located on a side of the stationary knife close to the bracket, and the moving knife assembly can be movably placed on the bracket.

8. The cutter head module according to claim 7, wherein: The cutter head module further includes at least two elastic members; one end of the elastic member abuts against the seat body, and the other end of the elastic member abuts against the bracket.

9. The cutter head module according to claim 8, wherein: The elastic member is a spring, and at least two first spring seats are convexly provided on a side of the seat body facing away from the movable knife, and the at least two first spring seats are respectively provided on both sides of the connecting portion in the first direction; At least two second spring seats are protruded from one side of the bracket facing the seat body, and each second spring seat is arranged corresponding to each first spring seat; the two ends of the spring are respectively sleeved on the first spring seat and the second spring seat.

10. An electric shaver, characterized in that: Comprising a cutter head module as described in any one of claims 7 to 9.

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