Shaving razor blade activation and deactivation control mechanism and shaving razor

Abstract

The application provides a razor blade opening and closing control mechanism of a shaver and the shaver, the shaver has a razor assembly, the opening and closing control mechanism has: a cover, a rotating part and a first connecting structure are arranged, the razor assembly of the shaver is connected with the cover; a supporting piece, a rotating connecting part matched with the rotating part is arranged, the cover can rotate relative to the supporting piece; a push and twist piece is connected with the cover and can move relative to the supporting piece, the push and twist piece is provided with a second connecting structure matched with the first connecting structure. The razor blade opening and closing control mechanism of the shaver provides an opening mode completely different from the existing razor blade opening and closing control mechanism, the noise is small when opening, and the defect that the razor blade will immediately pop out due to the mistaken touch of the razor blade is reduced through the arrangement of the opening and closing control mechanism.

Description

Technical Field

[0001] This invention relates to the fields of personal care and medical care, and in particular to a blade opening and closing control mechanism for a shaver and a shaver itself. Background Technology

[0002] In most existing razors or shaving clippers, the razor assembly is a single, fixed unit relative to the body. Some razors have the razor assembly hinged directly to the outer shell. In these cases, the user needs to manually press the razor assembly to unlock it or slide it to the unlocked position. This is achieved by a torsion spring mounted on the shell to pop the razor assembly out. For example, patent application number 201220583944.2, entitled "A Hidden Sideburn Trimmer Mechanism for an Errand," discloses such a pop-out control mechanism for an razor. Specifically, this hidden sideburn trimmer mechanism includes a shell, a bracket mounted on the shell, and sideburn trimmers. The shell and bracket are rotatably connected, and the torsion spring drives the bracket to rotate. In other words, the torsion spring causes the sideburn trimmers to rotate relative to the shell, thus opening and retracting the trimmers. However, this structure relies primarily on the torque of a torsion spring to control the opening of the sideburn trimmer. In actual use, the instantaneous impact of the torsional force when the trimmer is opened and closed can easily cause pressure shocks to the shaver's housing and other components in contact with the trimmer. Over time, this can reduce the overall structural stability of the shaver and shorten its lifespan. Furthermore, this torque-controlled mechanism tends to generate significant noise during the opening and closing processes. Also, if the user accidentally touches it, it will immediately spring out under the action of the torsion spring, potentially causing skin injury due to the impact. In addition, this opening method only offers two states: fully closed and fully open, making it inconvenient for users to adjust to the unevenness of their skin. Therefore, industry experts believe it is necessary to provide a completely new shaver to overcome the various shortcomings of existing technology. Summary of the Invention

[0003] In view of this, the present invention provides a blade opening and closing control mechanism for a shaver and a shaver.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A blade opening and closing control mechanism for a shaver, the shaver having a shaver assembly, the opening and closing control mechanism having:

[0006] The razor cover has a rotating part and a first connecting structure, and the razor assembly of the shaver is connected to the razor cover; the support member has a rotating connecting part that cooperates with the rotating part, and the razor cover can rotate relative to the support member; the push-twist member is connected to the razor cover and can move relative to the support member, and the push-twist member has a second connecting structure that cooperates with the first connecting structure.

[0007] Specifically, the first connecting structure has a first meshing tooth with concave and convex arrangements, and the second connecting structure has a second meshing tooth with concave and convex arrangements, wherein the first meshing tooth and the second meshing tooth cooperate with each other.

[0008] Specifically, the blade opening and closing control mechanism also includes a torsion spring, one end of which is connected to the push-torsion member, and the other end of which is fixed relative to the support member.

[0009] Specifically, the blade opening and closing control mechanism also includes a torsion spring, one end of which is connected to the blade cover and the other end of which is connected to the support member.

[0010] Specifically, the support includes a housing, and the razor assembly has a fully open state in which the razor assembly is fully ejected relative to the housing under the torsion of the torsion spring.

[0011] Specifically, the support includes a housing, and a receiving cavity is formed between the razor cover and the housing. The razor assembly also has a closed state located within the receiving cavity and a first open state after rotating out of the receiving cavity. The housing is provided with a razor cover guide rail, and the razor cover has a razor cover guide platform extending into the razor cover guide rail. When the razor assembly is in the closed state, the razor cover guide platform is locked with the razor cover guide rail, and the razor cover cannot slide relative to the housing. When the razor assembly is in the first open state, the razor cover guide platform can slide within the razor cover guide rail, thereby driving the razor cover to slide relative to the housing.

[0012] Specifically, the blade cover guide rail is a groove-shaped structure formed in the support member, the blade cover guide platform is located at the end of the rotating part, and the blade cover guide platform has a locking wide side with a size greater than the groove width of the groove-shaped structure and a narrow side with a size less than or equal to the groove-shaped structure.

[0013] Specifically, the push-torsion member has two connecting arms, and the second connecting structure is a toothed structure formed on the connecting arms.

[0014] A shaver includes a razor assembly and a blade opening / closing control mechanism as described in any one of the above.

[0015] Specifically, the razor assembly includes a razor blade, and the shaver also includes a power unit. The power unit includes a drive source, an eccentric mechanism, and a blade holder. The eccentric mechanism is connected to the drive source, and the blade holder is driven by the eccentric mechanism to reciprocate. The razor blade is connected to the blade holder.

[0016] Specifically, the razor also includes a blade assembly, which has a moving blade and a stationary blade. The moving blade is connected to the eccentric mechanism through a moving blade swing member, and the moving blade reciprocates under the drive of the eccentric mechanism.

[0017] The beneficial effects of this invention are as follows: The blade opening and closing control mechanism of the shaver described in this invention provides an opening method completely different from existing blade opening and closing control mechanisms. It has low noise when opening, and the design of the opening and closing control mechanism reduces the defect of the blade popping out immediately due to accidental blade contact. The intermediate transition rotating moving part makes the shaver assembly protrude relative to the housing only after a certain displacement, and finally the torsion spring is activated to drive the blade to pop out. Compared with the existing shaver assembly that relies on the torsion spring for instantaneous opening, it is safer to use. The design of the blade opening and closing control mechanism reduces the formation required for the shaver assembly to open, which helps to further reduce the overall size of the shaver's interior, save space, and facilitate user operation. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Appendix Figure 1 This is a schematic diagram of the structure of the shaver of the present invention, showing the shaver assembly in a closed state;

[0020] Appendix Figure 2 This is a schematic diagram of the structure of the shaver of the present invention, showing the shaver assembly in a fully open state;

[0021] Appendix Figure 3 This is an exploded view of the razor assembly of the shaver of the present invention in the closed state.

[0022] Appendix Figure 4 This is an exploded view of the razor assembly of the shaver of the present invention in the fully open state.

[0023] Appendix Figure 5 For along Figure 1 A cross-sectional view along the AA direction, showing the position of the rotating part when the razor assembly is not open;

[0024] Appendix Figure 6 This is a side sectional view showing the position of the rotating part of the razor assembly in the fully open state;

[0025] Appendix Figure 7This is a side sectional view showing the state of the guide when the razor assembly is in the closed state;

[0026] Appendix Figure 8 This is a side sectional view showing the state of the guide when the razor assembly is in the first open state;

[0027] Appendix Figure 9 This is a side sectional view showing the state of the guide when the razor assembly is in the fully open position;

[0028] Appendix Figure 10 This is a side sectional view showing the fit between the razor cap and the push-torque mechanism when the razor assembly is in the closed state;

[0029] Appendix Figure 11 This is a side sectional view showing the engagement relationship between the razor cap and the push-twist component when the razor assembly is in the first open state;

[0030] Appendix Figure 12 This is a side sectional view showing the engagement between the razor cap and the push-twist mechanism when the razor assembly is in the fully open state;

[0031] Appendix Figure 13 The structure of the power unit is shown. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] The present invention will now be further described with reference to the accompanying drawings.

[0034] This invention provides the following technical solution:

[0035] refer to Figure 1-13 As shown, the shaver of the present invention includes a shaver assembly 1, a blade opening and closing control mechanism 2, a power unit 3, and a blade assembly 4.

[0036] The razor assembly 1 includes a moving blade 11 and a stationary blade 12. The moving blade 11 reciprocates relative to the stationary blade 12 under the drive of the power unit 3. This reciprocating motion includes reciprocating movement, reciprocating rotation, and other reciprocating rotational movements. In this embodiment, the razor assembly 1 is a reciprocating type, as shown in the attached diagram. Figure 13As shown, the power unit 3 includes a drive source 31, an eccentric mechanism 32, and a moving blade swing member 33. The blade assembly 4 is provided with a moving blade and a stationary blade. The moving blade is connected to the eccentric mechanism through a moving blade swing member, and the moving blade reciprocates under the drive of the eccentric mechanism. The eccentric mechanism 32 is connected to the drive source 31, and the moving blade swing member 33 reciprocates under the drive of the eccentric mechanism 32. The moving blade 11 is connected to the moving blade swing member 33. The drive source 31 can be a motor (e.g., a servo motor), a cylinder, etc. In this embodiment, the drive source is a motor. The eccentric mechanism 32 includes an eccentric wheel 321 mounted on the motor output shaft and a drive element 322 connected to the eccentric wheel 321. The drive element 322 is connected to the moving blade swing member 33. The two ends of the drive element 322 are limited by the side grooves, converting the rotational motion of the eccentric wheel 321 into reciprocating linear motion, thereby driving the moving blade 11 to reciprocate. Therefore, the main purpose of this power unit is to use the eccentric wheel 321 to convert the eccentric rotation into reciprocating linear motion.

[0037] Specifically, the opening and closing control mechanism 2 includes: a knife cover 21, a support member 22, and a push-torsion member 23.

[0038] The blade cover 21 is provided with a rotating part 211 and a first connecting structure 212, and the shaving assembly 1 of the shaver is connected to the blade cover 21. The housing 22 is provided with a rotating connecting part 221 that cooperates with the rotating part 211 to support the rotation of the blade cover 21. The push-twist member 23 is provided with a second connecting structure 231 that cooperates with the first connecting structure 212. The push-twist member 23 is connected to the blade cover 21 and can move relative to the support member 22. Specifically, the push-twist member 23 is linked with the blade cover 21, and the blade cover 21 can rotate relative to the push-twist member. The first connecting structure 212 has a first meshing tooth with concave and convex shapes, and the second connecting structure 231 has a second meshing tooth with concave and convex shapes. The first meshing tooth and the second meshing tooth cooperate. The movement trajectory of the blade cover 21 relative to the push-twist member 23 has an arc shape. Figure 4 As shown, in this invention, the rotating part 211 is a support shaft formed on the blade cover 21, and the rotating connecting part 221 is a groove with an arc-shaped rotating support surface formed on the support member 22. Specifically, the push-torque member 23 has two connecting arms 232, and the second connecting structure 231 is a toothed structure formed on the connecting arms 232.

[0039] To reduce the force required for the user to push the push-twist member 23 when the razor assembly 1 is extended and retracted, and to facilitate the switching between the closed and open states of the razor assembly 1 for user convenience, the blade opening and closing control mechanism 2 of this invention further includes a torsion spring 24. One end of the torsion spring 24 is connected to the push-twist member 23, and the other end of the torsion spring 24 is fixed relative to the support member 22. In specific implementations, one end of the torsion spring 24 can also be connected to the razor cover, and the other end can be connected to the support member. Specifically, fixing posts, hooks, and slots can be provided on the razor cover 21, the support member 22, and the push-twist member 23 to fix both ends of the torsion spring 24.

[0040] The shaver of this invention has three different states during use: a closed state, a first open state, and a fully open state. The structural changes of the shaver in each of these different states will be described in detail below with reference to the accompanying drawings.

[0041] A receiving cavity is formed between the razor cover 21 and the support member 22. When the razor assembly 1 is in the closed state, the razor assembly 1 does not protrude relative to the support member 22. When moving from the closed state to the first open state, the razor assembly 1 rotates and extends out of the receiving cavity under the action of the push-torque member 23. In the fully open state, the razor assembly 1 is fully ejected relative to the support member 22 under the torsion force of the torsion spring 24. The first open state can also be called the incompletely open state, and its difference from the fully open state is:

[0042] First, the angle at which the razor assembly 1 opens in the first open state is the same as the angle at which it opens in the fully open state. The difference is that the extension length of the razor assembly 1 in the fully open state is longer than that in the first open state.

[0043] Second, see appendix. Figure 3 and appendix Figures 6-7As shown, the support member 22 is provided with a blade cover guide rail 222, and the blade cover 21 has a blade cover guide platform 213 extending into the blade cover guide rail 222. When the razor assembly 1 is in the closed state, the blade cover guide platform 213 is locked with the blade cover guide rail 222. At this time, the blade cover 21 can only rotate relative to the push-twist member 23 and the support member 22, and the blade cover 21 cannot slide relative to the support member 22. When the razor assembly 1 is in the first open state, the blade cover guide platform 213 can slide in the blade cover guide rail 222, thereby driving the blade cover 21 to slide relative to the support member 22. In other words, in the closed state, the blade cover guide 213 limits the movement of the blade cover 21 relative to the support member 22 (the blade cover guide 213 is locked to the blade cover guide rail 222). In the first open state, the locking of the blade cover guide 213 to the blade cover guide rail 222 is released. Therefore, in this invention, with the assistance of the torsion spring 23, the blade cover 21 can drive the razor assembly 1 from the first open state to the fully open state.

[0044] The blade opening and closing control mechanism of the shaver described in this invention provides an opening method completely different from existing blade opening and closing control mechanisms. It operates with low noise and reduces the defect of the blade popping out immediately due to accidental blade contact. The intermediate transition rotating moving part causes the shaver assembly to protrude relative to the housing only after a certain displacement, and finally the torsion spring is activated to drive the blade to pop out. Compared with the existing shaver assemblies that rely on the torsion spring for instantaneous opening, it is safer to use. The blade opening and closing control mechanism reduces the formation required for the shaver assembly to open, which helps to further reduce the overall size of the shaver's interior, save space, and facilitate user operation.

[0045] Specifically, in this embodiment, the support member 22 has a housing, and the blade cover 21 covers the upper part of the housing and can move relative to the housing. The blade cover guide rail 222 is a groove-shaped structure formed in the housing, and the blade cover guide platform 213 is disposed at the end of the rotating part 211. In this embodiment, the blade cover guide platform 213 is disposed at the end of the support shaft. Specifically, the blade cover guide platform 213 has a locking wide side 2131 with a size larger than the groove width of the groove-shaped structure and a narrow side 2132 with a size smaller than or equal to the groove-shaped structure. The blade cover guide platform 213 can be disposed in other parts of the support member 22, and is not limited to being disposed at the end of the rotating part 211 as disclosed in this embodiment.

[0046] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A blade opening and closing control mechanism for a shaver, the shaver having a razor assembly, characterized in that: The opening and closing control mechanism has the following features: The razor cover has a rotating part and a first connecting structure, and the razor assembly of the shaver is connected to the razor cover; the support member has a rotating connecting part that cooperates with the rotating part, and the razor cover can rotate relative to the support member; the push-twist member is connected to the razor cover and can move relative to the support member, and the push-twist member has a second connecting structure that cooperates with the first connecting structure. The support includes a housing, and a receiving cavity is formed between the razor cover and the housing. The razor assembly has a closed state located within the receiving cavity and a first open state after being rotated out of the receiving cavity. The housing is provided with a razor cover guide rail, and the razor cover has a razor cover guide platform extending into the razor cover guide rail. When the razor assembly is in the closed state, the razor cover guide platform is locked with the razor cover guide rail, and the razor cover cannot slide relative to the housing. When the razor assembly is in the first open state, the razor cover guide platform can slide within the razor cover guide rail, thereby causing the razor cover to slide relative to the housing. The razor assembly also has a fully open state, in which the razor assembly is fully ejected relative to the housing under the torsion of the torsion spring.

2. The blade opening and closing control mechanism of the shaver according to claim 1, characterized in that: The first connecting structure has a first meshing tooth with concave and convex arrangement, and the second connecting structure has a second meshing tooth with concave and convex arrangement, wherein the first meshing tooth and the second meshing tooth cooperate with each other.

3. The blade opening and closing control mechanism of the shaver according to claim 1 or 2, characterized in that: The blade opening and closing control mechanism also includes a torsion spring, one end of which is connected to the push-torsion member, and the other end of which is fixed relative to the support member.

4. The blade opening and closing control mechanism of the shaver according to claim 1 or 2, characterized in that: The blade opening and closing control mechanism also includes a torsion spring, one end of which is connected to the blade cover and the other end of which is connected to the support.

5. The blade opening and closing control mechanism of the shaver according to claim 1, characterized in that: The blade cover guide rail is a groove-shaped structure formed in the support member, and the blade cover guide platform is located at the end of the rotating part. The blade cover guide platform has a locking wide side with a size greater than the groove width of the groove-shaped structure and a narrow side with a size less than or equal to the groove-shaped structure.

6. The blade opening and closing control mechanism of the shaver according to any one of claims 1 to 4, characterized in that: The push-torque member has two connecting arms, and the second connecting structure is a toothed structure formed on the connecting arms.

7. A shaver, characterized in that: It includes a razor assembly and a blade opening and closing control mechanism as described in any one of claims 1 to 6.

8. The shaver according to claim 7, characterized in that: The razor assembly includes a razor blade, and the shaver also includes a power unit. The power unit includes a drive source, an eccentric mechanism, and a blade swing member. The eccentric mechanism is connected to the drive source, and the blade swing member is driven by the eccentric mechanism to reciprocate. The razor blade is connected to the blade swing member.

9. The shaver according to claim 8, characterized in that: The shaver also includes a blade assembly, which has a moving blade and a stationary blade. The moving blade is connected to the eccentric mechanism via a moving blade swing member, and the moving blade reciprocates under the drive of the eccentric mechanism.

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