Forward and reverse gear transmission mechanism, blade foil mechanism, shaving mechanism and razor

Abstract

This utility model relates to a forward and reverse gear transmission mechanism, a blade mesh mechanism, a shaving mechanism, and a razor, belonging to the field of electrical appliances. A forward and reverse gear transmission mechanism includes: a power input mechanism; a reduction mechanism, the input end of which is driveably connected to the power input mechanism; a first-direction transmission mechanism, driveably connected to the output end of the reduction mechanism; a second-direction transmission mechanism, driveably connected to the first-direction transmission mechanism; and an intermediate transmission mechanism, which is driveably connected to the first and second-direction transmission mechanisms and rotates in the first and second directions, respectively, with the first and second directions being opposite. This application discloses a forward and reverse structure that allows the blade mesh to flexibly adjust its rotation direction according to the beard condition and facial area, improving shaving efficiency.

Description

Technical Field

[0001] This utility model relates to the field of electrical appliances, and in particular to a forward and reverse gear transmission mechanism, a blade mesh mechanism, a shaving mechanism, and a razor. Background Technology

[0002] In existing technologies, razor blades often lack reversible rotation, operating only in one direction. This negatively impacts shaving performance, skin feel, and applicability in various scenarios. From a thoroughness perspective, a single direction is insufficient for handling different beard shapes. While it can be effective for coarse, upright beards, it fails to remove short, flat stubble. This stubble easily gets trapped in skin texture or blade gaps, resulting in noticeable missed areas even after repeated shaving. Skin irritation is also significantly increased. Continuous unidirectional rotation causes repeated pulling on the same area, exacerbating damage to the stratum corneum and leading to redness, stinging, and even swelling. Furthermore, the lack of reversible rotation prevents the razor from providing a massage effect, further reducing the user experience. Utility Model Content

[0003] Therefore, it is necessary to address the problem of the lack of forward and reverse rotation of the razor's blades by providing a forward and reverse gear transmission mechanism, a blade mechanism, a shaving mechanism, and a razor.

[0004] A forward and reverse gear transmission mechanism includes: a power input mechanism; a reduction mechanism, the input end of which is drivenly connected to the power input mechanism; a first direction transmission mechanism, the first direction transmission mechanism being drivenly connected to the output end of the reduction mechanism; a second direction transmission mechanism, the second direction transmission mechanism being drivenly connected to the first direction transmission mechanism, the rotation directions of the second direction transmission mechanism and the first direction transmission mechanism being opposite; and an intermediate transmission mechanism, wherein the intermediate transmission mechanism can be partially drivenly connected to the first direction transmission mechanism, and when the intermediate transmission mechanism is drivenly connected to the first direction transmission mechanism, the intermediate transmission mechanism and the second direction transmission mechanism are staggered; when the intermediate transmission mechanism is partially drivenly connected to the second direction transmission mechanism, the intermediate transmission mechanism and the first direction transmission mechanism are staggered; when the intermediate transmission mechanism is partially drivenly connected to the first direction transmission mechanism, the first direction transmission mechanism can drive the intermediate transmission mechanism to rotate in a first direction; when the intermediate transmission mechanism is partially drivenly connected to the second direction transmission mechanism, the second direction transmission mechanism can drive the intermediate transmission mechanism to rotate in a second direction, the first direction and the second direction being opposite.

[0005] The above discloses a forward and reverse rotation structure, in which the forward and reverse gear transmission mechanism is applied to the razor foil structure. A power input mechanism provides a stable power source, and a reduction mechanism precisely controls the rotation speed, avoiding blade vibration caused by high-speed operation and laying a smooth foundation for forward and reverse rotation switching. The rotation direction of the intermediate transmission mechanism is changed through a first-direction transmission mechanism and a second-direction transmission mechanism, achieving rapid forward and reverse rotation of the foil. This switching allows the foil to flexibly adjust its rotation direction according to the beard condition and facial area. For areas with prominent contours such as the jawline or hard-to-reach areas like the sides of the nose and corners of the mouth, forward rotation can precisely cut protruding hairs; reverse rotation allows the foil to better conform to the skin, lifting and removing fallen hairs. Simultaneously, the alternation of forward and reverse rotation greatly reduces the occurrence of skin sensitivity problems. In traditional unidirectional shaving, the foil continuously rubs against the skin in one direction, easily damaging the stratum corneum and causing dryness and stinging. This mechanism, through direction switching, reduces the number of unidirectional frictions between the skin and the foil in the same area, reducing continuous pressure on the skin and also providing a massage function for the user's skin. In addition, the quick forward and reverse switching improves shaving efficiency. There's no need to repeatedly adjust the razor angle; simply switching the direction of the mechanism itself can handle various beard conditions and facial areas, shortening shaving time and making daily shaving more convenient and efficient.

[0006] In one embodiment, the first directional transmission mechanism includes a first directional power tooth and a first directional transmission tooth. The first directional transmission tooth is disposed on the first directional power tooth and is drively connected to the output end of the reduction mechanism. The second directional transmission mechanism includes a second directional power tooth and a second directional transmission tooth. The second directional transmission tooth is disposed on the second directional power tooth and is drively connected to the first directional power tooth. When the first directional transmission tooth rotates with the first directional power tooth, it can mesh with the intermediate transmission mechanism and drive the intermediate transmission mechanism to rotate in the first direction. When the second directional transmission tooth rotates with the second directional power tooth, it can mesh with the intermediate transmission mechanism and drive the intermediate transmission mechanism to rotate in the second direction. The meshing time of the second directional transmission tooth with the intermediate transmission mechanism is staggered with the meshing time of the first directional transmission tooth with the intermediate transmission mechanism. By driving the first directional power tooth of the first directional transmission mechanism to the output end of the reduction mechanism, the first directional transmission tooth is driven to rotate. The second directional power tooth of the second directional transmission mechanism is driven to rotate with the first directional power tooth, and the meshing times of the two with the intermediate transmission mechanism are staggered, thus realizing the forward and reverse rotation function of the intermediate transmission mechanism. The staggered engagement time ensures uninterrupted power supply to the intermediate drive mechanism during forward and reverse switching. When the first-direction drive gear engages with the intermediate drive mechanism, driving it to rotate forward, it can fully cut coarse and stiff beard hairs. After disengagement, the second-direction drive gear immediately engages with the intermediate drive mechanism, driving it to rotate in the reverse direction to clean up short stubble or continue cutting the beard. This seamless connection avoids power downtime, ensuring continuous and efficient shaving. Simultaneously, the staggered engagement allows the forces of forward and reverse rotation to be superimposed in an orderly manner. After forward cutting, the reverse force follows immediately; the two forces act on the beard from different directions, cutting beard fibers more thoroughly, especially for curved beard hairs. The forward force makes some of them stand upright, while the reverse force cuts off the remaining portion, reducing residue. Furthermore, this design buffers the impact force when the foil assembly turns. Simultaneous engagement would cause gear collisions, while staggered engagement ensures smooth turning, reduces foil vibration, minimizes friction and irritation to the skin, improves shaving comfort, and allows the foil assembly to operate flexibly in complex facial areas, ensuring shaving results and a superior user experience.

[0007] In one embodiment, the intermediate transmission mechanism includes a main transmission component, an auxiliary transmission component, and a reversing output gear. The main transmission component can mesh with either the first or second direction transmission mechanism, and is driven by the reversing output gear. Multiple auxiliary transmission components are also driven by the reversing output gear. By making the main transmission component directly mesh with either the first or second direction transmission mechanism, it can accurately receive power from both mechanisms and stably transmit it to the reversing output gear. When meshing with the first direction transmission mechanism, the main transmission component efficiently transmits forward power, ensuring the reversing output gear drives the cutting tool to generate sufficient forward cutting force. When meshing with the second direction transmission mechanism, it smoothly reverses the power direction, allowing the reversing output gear to rotate in the opposite direction, ensuring the accuracy and stability of forward and reverse power transmission and providing core power support for the flexible switching of the cutting tool assembly's working state. The reversing output gear is the central hub for power distribution. On one hand, it connects to the main transmission component to receive power; on the other hand, it is driven by multiple auxiliary transmission components, distributing power evenly to each auxiliary transmission component. This design allows for power distribution, avoiding the power concentration and overload issues that can occur with a single transmission path, resulting in more balanced force on the foil. Multiple auxiliary transmission components operate synchronously, enhancing the smoothness of the foil's rotation and reducing wobbling that can occur with a single component. During shaving, this smoothness allows the foil components to better conform to the contours of the skin.

[0008] In one embodiment, the main drive assembly includes a main drive input gear, a main drive output shaft, and a main drive output gear. The main drive input gear and the main drive output gear are disposed on the main drive output shaft, and are located on opposite sides of the main drive output shaft. The main drive input gear can mesh with either the first direction drive mechanism or the second direction drive mechanism. The meshing time of the main drive input gear with the first direction drive mechanism and the meshing time of the main drive input gear with the second direction drive mechanism are alternated. When the main drive input gear meshes with the first direction drive mechanism, the main drive input gear rotates in the first direction. When the main drive input gear meshes with the second direction drive mechanism, the main drive input gear rotates in the second direction. The rotation of the main drive input gear can drive the rotation of the main drive output gear. The main drive output gear is internally connected to the reversing output gear. By distributing the main drive input gear and main drive output gear on opposite sides of the main drive output shaft, when the main drive input gear meshes with the first or second direction transmission mechanism, power is transmitted to the main drive output gear via the main drive output shaft. The gear distribution on both sides disperses torque during transmission, reducing deformation or wear of the shaft due to excessive force on one side. This ensures stability of power during forward and reverse rotation, reduces power loss, and allows the shaving head to maintain strong cutting power. The staggered meshing times of the main drive input gear with the two direction transmission mechanisms, combined with the gear layout on both sides, prevent mutual interference during power transmission. When the main drive input gear rotates forward, the main drive output gear rotates synchronously forward via the main drive output shaft, driving the reversing output gear for forward cutting. When switching to reverse rotation, the symmetrical distribution of gears on both sides makes the steering inertia more balanced, reducing steering delay caused by excessive inertia on one side. This allows the shaving head to quickly respond to changes in beard condition, rapidly switching to reverse after cutting coarse stubble in the forward direction to clean up short stubble close to the skin, improving shaving continuity.

[0009] In one embodiment, the auxiliary drive assembly includes an auxiliary drive shaft and an auxiliary drive gear. The auxiliary drive shaft is fixed to the housing assembly, and the auxiliary drive gear is mounted on the auxiliary drive shaft and is connected to the inner side of the reversing output gear. By mounting the auxiliary drive gear on the auxiliary drive shaft and connecting it to the inner side of the reversing output gear, multi-path power distribution is achieved. When the reversing output gear rotates, it distributes power to various auxiliary drive assemblies through meshing with multiple auxiliary drive gears on its inner side, and then transmits it to different areas of the shaving foil. This multi-point power distribution method allows for more even force distribution on the shaving foil, preventing excessive wear in certain areas due to excessive force and extending the shaving foil's lifespan. Simultaneously, the synchronous operation of multiple auxiliary drive assemblies enhances the smoothness of the shaving foil's rotation, reduces shaving foil vibration, makes it more skin-friendly, and improves shaving smoothness.

[0010] In one embodiment, the reversing output gear includes a reversing output internal gear and a reversing output external gear. The reversing output external gear is mounted on the reversing output internal gear. The reversing output internal gear is connected to the main drive assembly, and multiple auxiliary drive assemblies are connected to the reversing output internal gear. The outer side of the reversing output external gear is used to connect to the cutter head assembly and drive the cutter head assembly to rotate in the first direction or the second direction. By designing the transmission connection between the reversing output internal gear and the main drive assembly and multiple auxiliary drive assemblies, power convergence and balanced transmission are achieved. When the main drive output gear drives the reversing output internal gear to rotate, the annular structure of the internal gear can simultaneously mesh with multiple auxiliary drive gears, evenly distributing the power input from the main drive assembly to each auxiliary drive assembly. This design avoids power fluctuations that may occur in a single transmission path, making the rotation of the reversing output internal gear smoother. The reversing output external gear is mounted on the reversing output internal gear and connected to the cutter head assembly, achieving the final conversion of power and precise transmission of direction. The forward and reverse rotation of the internal gear of the direction-changing output is directly transmitted to the blade assembly through the external gear. Since the internal and external gears rotate synchronously, the immediacy and accuracy of the direction conversion are guaranteed.

[0011] In one embodiment, the reduction mechanism includes a primary gear, a secondary gear, and a tertiary gear. The primary gear is driven by the power input mechanism, the secondary gear is driven by the primary gear, the tertiary gear is driven by the secondary gear, and the first directional transmission mechanism is driven by the tertiary gear. By utilizing the primary, secondary, and tertiary gears to form a three-stage transmission structure, precise power control is achieved through progressive meshing, providing suitable speed and torque for the forward and reverse operation of the shaver's foil. The primary gear directly drives the power input mechanism, its primary function being to receive the initial power and initiate the reduction process. After receiving power from the primary gear, the secondary gear meshes with the tertiary gear to complete a secondary reduction. After two stages of transmission, the speed is further reduced, and the torque is continuously amplified, making the power characteristics more suitable for shaving needs. The tertiary gear, as the terminal of the reduction mechanism, is driven by the first directional transmission mechanism, stably outputting the power after two stages of reduction.

[0012] The second aspect of this application discloses a blade mesh mechanism, which includes: the aforementioned forward and reverse gear transmission mechanism; and a blade mesh assembly that meshes with the output end of the intermediate transmission mechanism.

[0013] The second aspect disclosed above discloses a foil mechanism in which a forward and reverse gear transmission mechanism provides flexible and controllable rotational power for the foil assembly. The stable power from the power input mechanism, after optimization by a reduction mechanism, is transmitted to the foil assembly via a forward and reverse gear transmission mechanism through a first and second transmission mechanism. This power transmission path ensures that the foil assembly can switch its rotation direction as needed, achieving a full-face shave without blind spots. The meshing design between the foil assembly and the output end of the intermediate transmission mechanism ensures the immediacy and stability of power transmission. When the intermediate transmission mechanism changes its rotation direction due to forward and reverse switching, the foil assembly responds synchronously, avoiding beard residue caused by power lag. Simultaneously, this direct meshing reduces power loss, allowing the forward and reverse forces to be precisely applied to the beard. The strong force during forward cutting and the continuous force during reverse cleaning complement each other, significantly improving shaving efficiency and cleanliness.

[0014] In one embodiment, the blade assembly includes a blade drive sleeve, a first blade connector, a second blade connector, a blade intermediate gear, a blade meshing member, a blade connecting housing, a first blade, and a second blade. The blade drive sleeve meshes with and is driven by the reversing output gear. The first blade connector is sleeved on and driven by the blade drive sleeve. The first blade connector is buoyant relative to the blade drive sleeve. The second blade connector is engaged with and driven by the first blade connector. The intermediate gear of the blade net is mounted on and driven by the second connecting member of the blade net. The intermediate gear can float relative to the second connecting member. The blade net meshing member meshes with and is driven by the intermediate gear. The blade net connecting housing is mounted on and driven by the meshing member. The first blade net is mounted on the connecting housing, which drives the first blade net to rotate. The second blade net is mounted on the first blade net, and the first blade net drives the second blade net to rotate simultaneously. By meshing the blade net power gear sleeve with the reversing output gear as a power input, it can efficiently receive forward and reverse power and transmit it to the first connecting member. The first connecting member is mounted on the power gear sleeve and can float relative to it. This floating design allows it to slightly adjust its position according to facial contours, ensuring that power transmission is not affected by skin undulations and that subsequent components always remain in close contact with the skin. The second connecting member is mounted on and drives the first connecting member, further stabilizing the power transmission path. The central gear of the foil is positioned on top and can float relative to it. This double floating structure provides double protection, ensuring continuous power transmission to the foil engagement components while offsetting transmission errors and reducing jamming during gear engagement. After the foil engagement components mesh with the central gear, power is transmitted to the foil connecting housing. The connecting housing engages and drives the first foil to rotate, simultaneously causing the second foil to rotate synchronously. The double foil design, combined with forward and reverse rotation, lifts up fallen beard hairs and, together with the moving blade assembly, thoroughly removes the user's beard, improving shaving completeness. The engaging structure ensures a tight connection between the first foil and the connecting housing, preventing slippage. The second foil rotates synchronously with the first foil, utilizing the staggered mesh of the double layer to enhance beard capture and reduce missed shaves. Simultaneously, the combination of floating and engaging components gives the foil assembly a certain degree of elasticity, allowing it to better conform to facial curves and maintain effective cutting even in complex areas, balancing shaving efficiency and skin-friendly properties.

[0015] A third aspect of this application discloses a shaving mechanism, comprising: a drive mechanism; the aforementioned blade mesh mechanism; a power input mechanism including a power input gear, a power shaft, and a power connecting sleeve, wherein the power input gear and the power connecting sleeve are disposed on the power shaft, and the power input gear and the power connecting sleeve are respectively disposed at both ends of the power shaft, the input end of the power input gear is drivenly connected to the drive mechanism, and the output end of the power input gear is drivenly connected to the reduction mechanism; and a moving blade assembly, wherein the moving blade assembly is disposed on the power connecting sleeve and drivenly connected to the power connecting sleeve.

[0016] The third aspect disclosed above discloses a shaving mechanism in which the drive mechanism provides the core power source for the entire shaving mechanism, and its output power is transmitted to subsequent components via the power input mechanism. In the power input mechanism, the design of the power input gear and the power connecting sleeve being located at opposite ends of the power shaft achieves bidirectional power splitting and efficient transmission. The input end of the power input gear is connected to the drive mechanism; after receiving power, one end drives the reduction mechanism through the output end, providing adaptive power for the forward and reverse operation of the foil mechanism; the other end transmits power to the power connecting sleeve via the power shaft, driving the moving blade assembly. This two-end distributed structure ensures balanced force on the power shaft, reducing losses and vibrations during power transmission, and ensuring stable power support for the foil mechanism and the moving blade assembly. The moving blade assembly is mounted on and driven by the power connecting sleeve, forming a coordinated cutting action with the foil mechanism under the drive of the power input mechanism. The relative movement between the moving blade assembly and the foil mechanism enables rapid cutting of the beard entering the foil, and the stable transmission of the power connecting sleeve ensures that the rotational speed of the moving blade assembly matches the forward and reverse rhythm of the foil mechanism.

[0017] In one of the embodiments, the moving blade assembly includes a moving blade power input member, a first floating device, a first moving blade connecting member, a second moving blade connecting member, a third moving blade connecting member, a second floating device, a fourth moving blade connecting member, a first moving blade and a second moving blade. The moving blade power input member is disposed on the power connection sleeve and is in transmission connection with the power connection sleeve. The first floating device is sleeved on the moving blade power input member and is in transmission connection with the moving blade power input member. The moving blade power input member can float relative to the first floating device. The first moving blade connecting member is disposed on the first floating device and is in transmission connection with the first floating device. The second moving blade connecting member is sleeved on the first moving blade connecting member and is in transmission connection with the first moving blade connecting member. The second moving blade connecting member can float relative to the first moving blade connecting member. The third moving blade connecting member is disposed on the second moving blade connecting member, and the third moving blade connecting member is in transmission connection with the second moving blade connecting member. The second floating device is disposed on the first moving blade connecting member and is in transmission connection with the second moving blade connecting member. The second floating device can float relative to the second moving blade connecting member. The first moving blade is disposed on the third moving blade connecting member and is in transmission connection with the third moving blade connecting member. The fourth moving blade connecting member is disposed on the second floating device and is in transmission connection with the second floating device. The second moving blade is disposed on the fourth moving blade connecting member. By tightly transmitting the moving blade power input member and the power connection sleeve, the power is stably introduced into the interior of the assembly. The first floating device is sleeved on the moving blade power input member and can float relatively, and this design provides the basic buffering ability for the entire moving blade assembly. When contacting a facial protrusion or depression, the first floating device can offset the pressure through a small displacement, avoiding the moving blade from stimulating the skin due to rigid contact, and at the same time ensuring the continuous transmission of power to the first moving blade connecting member. After the first moving blade connecting member is in transmission with the first floating device, the power is transmitted to the second moving blade connecting member, and the floating characteristic of the second moving blade connecting member further enhances the adaptability. With the dual floating design of the second floating device, it is ensured that the moving blade always maintains an appropriate pressure on the skin, neither causing missed shaving due to too small pressure nor causing redness and swelling due to too large pressure. The third moving blade connecting member connects the second moving blade connecting member and the cutter net mechanism, realizing the linkage calibration between the moving blade and the cutter net, ensuring that the cutting gap between the first moving blade and the cutter net is always precise. Combining with the fourth moving blade connecting member and the second moving blade driven by the second floating device, the all-round shaving of the user's beard is realized. The multiple floating structures not only improve the fitting degree, but also reduce the transmission error. The floating of the second moving blade connecting member relative to the first connecting member and the floating of the second floating device relative to the second connecting member can offset the small deviations in power transmission, avoiding friction or jamming caused by misalignment between the moving blade assembly and the cutter net assembly.

[0018] The fourth aspect of this application discloses a razor, which includes: the shaving mechanism described above; a handle housing assembly, a portion of the forward and reverse gear transmission mechanism and the drive mechanism being disposed on the handle housing assembly, a portion of the moving blade assembly passing through the handle housing assembly, and the remaining portion of the moving blade assembly being disposed on the foil assembly; a blade head housing, the foil assembly being disposed on the blade head housing; and a control assembly, the control assembly being disposed on the handle housing assembly.

[0019] The fourth aspect disclosed above discloses a shaver in which the shaving mechanism, as the core working component, can precisely handle different beard conditions and complex facial areas through the coordinated operation of its forward and reverse gear transmission mechanism, foil assembly, and moving blade assembly. The flexible switching between forward and reverse rotation allows the foil assembly and moving blade assembly to efficiently cut coarse beard hairs and thoroughly remove short stubble. The multiple floating structure of the moving blade assembly ensures good contact with the skin, reducing irritation and laying a solid foundation for a good shaving effect. The handle housing assembly plays a crucial role in support and connection. It provides a stable mounting space for the forward and reverse gear transmission mechanism and drive mechanism, ensuring the orderly operation of internal components and reducing vibration and noise during operation. Simultaneously, part of the moving blade assembly passes through the handle housing assembly, while the remaining part is mounted on the foil assembly. This layout achieves smooth power transmission and makes the overall structure more compact, facilitating handheld operation. The head housing provides a reliable mounting carrier for the foil assembly, ensuring its stable position during shaving and preventing displacement due to vibration or external forces. This guarantees precise cooperation between the foil assembly and the moving blade assembly, thereby maintaining a stable cutting effect. The control components are located on the handle housing assembly, allowing users to adjust the working status of the shaving mechanism.

[0020] In one embodiment, the handle housing assembly includes a handle outer shell, a first handle inner shell, a second handle inner shell, a third handle inner shell, a fourth handle inner shell, and a fifth handle inner shell. The first handle inner shell is disposed on the handle outer shell, the second handle inner shell is disposed on the first handle inner shell, the third handle inner shell is disposed on the second handle inner shell and / or the first handle inner shell, the fourth handle inner shell is disposed on the third handle inner shell and / or the first handle inner shell, and the fifth handle inner shell is disposed on the fourth handle inner shell. The power input mechanism is disposed on the first handle inner shell and the third handle inner shell, the deceleration mechanism is disposed on the second handle inner shell, the third handle inner shell, and the fourth handle inner shell, the first directional transmission mechanism and the second directional transmission mechanism are disposed on the third handle inner shell and the fourth handle inner shell, the drive mechanism is disposed on the first handle inner shell, a portion of the moving blade assembly passes through the fifth handle inner shell, and the blade head shell is disposed on the fifth handle inner shell. By using the handle outer shell as the outermost structure, not only is a unified appearance provided for the entire handle, but it also serves a protective function, isolating the internal components from external dust and moisture. The first handle inner shell carries the power input mechanism and drive mechanism. As the mounting carrier of the power source, its stability directly affects the stability of the power output. A tight connection with the handle outer shell reduces vibration transmission during drive mechanism operation, prevents displacement of the power input mechanism due to shaking, and ensures a precise power transmission path from the source to subsequent mechanisms. The second, third, and fourth handle inner shells jointly fix the reduction mechanism. The three-stage gear reduction mechanism requires precise meshing under stable support. The enclosed fixation of the multi-layered inner shells limits the radial runout of the gears, minimizing power loss during progressive reduction and preventing abnormal noise caused by loose gears. The third and fourth handle inner shells also jointly carry the first and second direction transmission mechanisms. Their mounting structure provides balanced support for the forward and reverse transmission gears, ensuring uniform force during gear meshing, reducing tooth wear, and extending the service life of the mechanism. The fifth handle inner shell serves as a passage for the moving blade assembly, contributing to the compactness of the shaver.

[0021] In one embodiment, the cutter head housing includes a cutter head outer shell, a cutter head connecting shell, and a cutter head inner shell. One end of the cutter head connecting shell is disposed on the cutter head outer shell, and the other end is disposed on the handle housing assembly. The cutter head inner shell is disposed on the cutter head outer shell and / or the cutter head connecting shell, and the cutter head mesh assembly is disposed on the cutter head outer shell and / or the cutter head connecting shell and / or the cutter head inner shell. By using the cutter head outer shell as the outer protective structure of the cutter head, a mounting base is provided for the cutter head connecting shell and the cutter head inner shell, maintaining the stability of the overall shape of the cutter head. One end of the cutter head connecting shell is connected to the cutter head outer shell, and the other end is connected to the handle housing assembly. It is a key component connecting the cutter head and the handle, realizing the mechanical connection between the two. The cutter head inner shell is disposed on the cutter head outer shell and the cutter head connecting shell, and together with the cutter head connecting shell, it fixes the cutter head mesh assembly, which can precisely limit the position of the cutter head mesh assembly and ensure that the cooperation between the cutter head mesh assembly and the moving blade assembly is always in the optimal state. This stable fixation prevents the cutter head mesh assembly from shifting during forward and reverse rotation. Attached Figure Description

[0022] Figure 1 The first three-dimensional view of a razor;

[0023] Figure 2 This is a first perspective view of the forward and reverse gear transmission mechanism and the drive mechanism;

[0024] Figure 3 This is a second perspective view of the forward and reverse gear transmission mechanism and the drive mechanism;

[0025] Figure 4 This is a first perspective view of a forward and reverse gear transmission mechanism;

[0026] Figure 5 This is a second perspective view of the forward and reverse gear transmission mechanism;

[0027] Figure 6 This is a third perspective view of the forward and reverse gear transmission mechanism;

[0028] Figure 7 This is a 3D view of the blade mesh component;

[0029] Figure 8 This is a cross-sectional view of the knife-shaped wire mesh assembly;

[0030] Figure 9 This is a 3D view of the moving blade assembly;

[0031] Figure 10 This is a cross-sectional view of the moving tool assembly;

[0032] Figure 11 This is a cross-sectional view of the blade assembly and the moving blade assembly;

[0033] Figure 12Cross-sectional views of the forward and reverse gear transmission mechanism, the handle housing assembly, and the cutter head housing;

[0034] Figure 13 This is a cross-sectional view of the blade mesh assembly, the handle housing assembly, and the blade head housing.

[0035] The correspondence between the reference numerals and the component names is as follows:

[0036] 1 Power input mechanism, 11 Power input gear, 12 Power shaft, 13 Power connection sleeve;

[0037] 2. Reduction mechanism, 21. First stage gear, 22. Second stage gear, 23. Third stage gear;

[0038] 3 First direction transmission mechanism, 31 First direction power gear, 32 First direction transmission gear;

[0039] 4 Second direction transmission mechanism, 41 Second direction power gear, 42 Second direction transmission gear;

[0040] 5 Intermediate transmission mechanism, 51 Main transmission assembly, 511 Main transmission input gear, 512 Main transmission output shaft, 513 Main transmission output gear, 52 Auxiliary transmission assembly, 521 Auxiliary transmission shaft, 522 Auxiliary transmission gear, 53 Reversing output gear, 531 Reversing output internal gear, 532 Reversing output external gear.

[0041] 6. Blade mesh assembly, 61. Blade mesh power sleeve, 62. Blade mesh first connector, 63. Blade mesh second connector, 64. Blade mesh intermediate gear, 65. Blade mesh meshing component, 66. Blade mesh connecting housing, 67. First blade mesh, 68. Second blade mesh;

[0042] 7. Drive mechanism;

[0043] 8. Moving blade assembly, 81. Moving blade power input component, 82. First floating device, 83. First moving blade connector, 84. Second moving blade connector, 85. Third moving blade connector, 86. Second floating device, 87. Fourth moving blade connector, 88. First moving blade, 89. Second moving blade;

[0044] 9 Handle housing assembly, 91 Handle outer shell, 92 First handle inner shell, 93 Second handle inner shell, 94 Third handle inner shell, 95 Fourth handle inner shell, 96 Fifth handle inner shell;

[0045] 10. Cutter head housing; 101. Cutter head outer shell; 102. Cutter head connecting shell; 103. Cutter head inner shell;

[0046] 100 control components. Detailed Implementation

[0047] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0048] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0049] The following description, with reference to the accompanying drawings, describes some embodiments of the present invention, including a forward and reverse gear transmission mechanism, a blade mesh mechanism, a shaving mechanism, and a razor.

[0050] Example 1

[0051] like Figures 2 to 6 As shown, this embodiment discloses a forward and reverse gear transmission mechanism, including: a power input mechanism 1; a reduction mechanism 2, the input end of which is connected to the power input mechanism 1; a first direction transmission mechanism 3, which is connected to the output end of the reduction mechanism 2; a second direction transmission mechanism 4, which is connected to the first direction transmission mechanism 3, and the rotation directions of the second direction transmission mechanism 4 and the first direction transmission mechanism 3 are opposite; and an intermediate transmission mechanism 5, which can be partially connected to the first direction transmission mechanism 3, and when the intermediate transmission mechanism 5 is connected to the first direction transmission mechanism 3, the intermediate transmission mechanism 5 and the first direction transmission mechanism 3 are connected in opposite directions. The second direction transmission mechanism 4 is interleaved, and the intermediate transmission mechanism 5 can be partially connected to the second direction transmission mechanism 4. When the intermediate transmission mechanism 5 is connected to the second direction transmission mechanism 4, the intermediate transmission mechanism 5 is interleaved with the first direction transmission mechanism 3. When the intermediate transmission mechanism 5 is partially connected to the first direction transmission mechanism 3, the first direction transmission mechanism 3 can drive the intermediate transmission mechanism 5 to rotate in a first direction. When the intermediate transmission mechanism 5 is partially connected to the second direction transmission mechanism 4, the second direction transmission mechanism 4 can drive the intermediate transmission mechanism 5 to rotate in a second direction. The first direction and the second direction are opposite.

[0052] This application discloses a forward and reverse rotation structure, in which a forward and reverse gear transmission mechanism is applied to the razor foil structure. A power input mechanism 1 provides a stable power source, and a reduction mechanism 2 precisely controls the rotation speed to avoid blade vibration caused by high-speed operation, laying a smooth foundation for forward and reverse rotation switching. The rotation direction of the intermediate transmission mechanism 5 is changed through a first direction transmission mechanism 3 and a second direction transmission mechanism 4, achieving rapid forward and reverse rotation of the foil. This switching allows the foil to flexibly adjust its rotation direction according to the beard condition and facial area. For areas with prominent contours such as the jawline or hard-to-reach areas like the sides of the nose and corners of the mouth, forward rotation can precisely cut protruding hairs; reverse rotation allows the foil to better conform to the skin, lifting and removing fallen hairs. Simultaneously, the alternation of forward and reverse rotation greatly reduces the occurrence of skin sensitivity problems. In traditional unidirectional shaving, the foil continuously rubs against the skin in one direction, easily damaging the stratum corneum and causing dryness and stinging. This mechanism, through direction switching, reduces the number of unidirectional frictions between the skin and the foil in the same area, reducing continuous pressure on the skin and also providing a massage function for the user's skin. In addition, the quick forward and reverse switching improves shaving efficiency. There's no need to repeatedly adjust the razor angle; simply switching the direction of the mechanism itself can handle various beard conditions and facial areas, shortening shaving time and making daily shaving more convenient and efficient.

[0053] like Figure 3 , Figure 4 and Figure 5As shown, in addition to the features of the above embodiments, this embodiment further defines: the first direction transmission mechanism 3 includes a first direction power tooth 31 and a first direction transmission tooth 32, the first direction transmission tooth 32 is disposed on the first direction power tooth 31, the first direction power tooth 31 is connected to the output end of the reduction mechanism 2, the second direction transmission mechanism 4 includes a second direction power tooth 41 and a second direction transmission tooth 42, the second direction transmission tooth 42 is disposed on the second direction power tooth 41, the second direction power tooth 41 is connected to the first direction power tooth 31, the first direction transmission tooth 32 can mesh with the intermediate transmission mechanism 5 and drive the intermediate transmission mechanism 5 to rotate in the first direction when the first direction power tooth 31 rotates, the second direction transmission tooth 42 can mesh with the intermediate transmission mechanism 5 and drive the intermediate transmission mechanism 5 to rotate in the second direction when the second direction power tooth 41 rotates, the meshing time of the second direction transmission tooth 42 and the intermediate transmission mechanism 5 is staggered with the meshing time of the first direction transmission tooth 32 and the intermediate transmission mechanism 5. By driving the first direction power gear 31 of the first direction transmission mechanism 3 to the output end of the reduction mechanism 2, the first direction transmission gear 32 is driven to rotate. The second direction power gear 41 of the second direction transmission mechanism 4 drives the first direction power gear 31, causing the second direction transmission gear 42 to rotate accordingly. The engagement times of the two gears with the intermediate transmission mechanism 5 are staggered, achieving the forward and reverse rotation function of the intermediate transmission mechanism 5. This staggered engagement time ensures uninterrupted power supply to the intermediate transmission mechanism 5 during forward and reverse rotation. When the first direction transmission gear 32 engages with the intermediate transmission mechanism 5, driving it to rotate forward, it can fully cut coarse and stiff beard hairs. After disengagement, the second direction transmission gear 42 immediately engages with the intermediate transmission mechanism 5, driving it to rotate in the reverse direction to clean short stubble or continue cutting beard hairs. This seamless connection avoids power downtime, ensuring continuous and efficient shaving. Simultaneously, the staggered engagement allows the forward and reverse forces to be superimposed in an orderly manner. After the forward force cuts, the reverse force follows immediately. These two forces act on the beard from different directions, cutting the beard fibers more thoroughly. Especially for curved beard hairs, the forward force makes part of them stand upright, while the reverse force cuts off the remaining portion, reducing residue. Additionally, this design cushions the impact when the foil assembly 6 turns. Simultaneous engagement would cause gear collisions, but staggered engagement ensures smooth turning, reduces foil vibration, minimizes friction and irritation to the skin, and improves shaving comfort. This allows the foil assembly 6 to operate flexibly in complex facial areas, ensuring both shaving results and a superior user experience.

[0054] like Figure 3 and Figure 4As shown, in addition to the features of the above embodiments, this embodiment further defines: the intermediate transmission mechanism 5 includes a main transmission component 51, an auxiliary transmission component 52, and a reversing output gear 53. The main transmission component 51 can mesh with the first direction transmission mechanism 3 or the second direction transmission mechanism 4, and the main transmission component 51 is connected to the reversing output gear 53. There are multiple auxiliary transmission components 52, and multiple auxiliary transmission components 52 are connected to the reversing output gear 53. By using the main transmission component 51 as a component that directly meshes with the first direction transmission mechanism 3 or the second direction transmission mechanism 4, it can accurately receive power from the two direction transmission mechanisms and stably transmit it to the reversing output gear 53. When meshing with the first direction transmission mechanism 3, the main transmission component 51 efficiently transmits the positive power, ensuring that the reversing output gear 53 drives the blade mesh to generate sufficient positive cutting force; while when meshing with the second direction transmission mechanism 4, it can smoothly change the direction of power, enabling the reversing output gear 53 to rotate in the opposite direction, ensuring the accuracy and stability of the forward and reverse power transmission, and providing core power support for the flexible switching of the working state of the blade mesh assembly 6. The variable-direction output gear 53 is the central hub for power distribution. It connects to the main drive assembly 51 to receive power and also connects to multiple auxiliary drive assemblies 52, distributing power evenly across them. This design allows for power diversion, avoiding the power concentration overload problem that can occur with a single drive path, resulting in a more balanced force on the foil. The synchronized operation of multiple auxiliary drive assemblies 52 enhances the smoothness of the foil's rotation and reduces wobbling that can occur with a single drive assembly. During shaving, this smoothness allows the foil assembly 6 to better conform to the contours of the skin.

[0055] like Figure 4 and Figure 5As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the main drive assembly 51 includes a main drive input gear 511, a main drive output shaft 512, and a main drive output gear 513. The main drive input gear 511 and the main drive output gear 513 are disposed on the main drive output shaft 512, and are respectively disposed on both sides of the main drive output shaft 512. The main drive input gear 511 can mesh with the first direction transmission mechanism 3 or the second direction transmission mechanism 4. The engagement time of the main drive input gear 511 with the first direction transmission mechanism 3 is staggered with the engagement time of the main drive input gear 511 with the second direction transmission mechanism 4. When the main drive input gear 511 is engaged with the first direction transmission mechanism 3, the main drive input gear 511 rotates in the first direction. When the main drive input gear 511 is engaged with the second direction transmission mechanism 4, the main drive input gear 511 rotates in the second direction. When the main drive input gear 511 rotates, it can drive the main drive output gear 513 to rotate. The auxiliary drive gear 522 is connected to the inner drive of the reversing output gear 53. By distributing the main drive input gear 511 and the main drive output gear 513 on opposite sides of the main drive output shaft 512, when the main drive input gear 511 meshes with the first directional transmission mechanism 3 or the second directional transmission mechanism 4, power is transmitted to the main drive output gear 513 through the main drive output shaft 512. The gear distribution on both sides disperses the torque during transmission, reducing deformation or wear of the shaft due to excessive force on one side, ensuring the stability of power during forward and reverse switching, reducing power loss, and allowing the cutting tool to maintain strong cutting power at all times. The staggered meshing times of the main drive input gear 511 with the two directional transmission mechanisms, combined with the gear layout on both sides, avoid mutual interference during power transmission. When the main drive input gear 511 rotates in the forward direction, the main drive output gear 513 rotates synchronously in the forward direction through the main drive output shaft 512, driving the reversing output gear 53 to achieve forward cutting of the shaving foil; when switching to reverse rotation, the symmetrical distribution of the gears on both sides makes the steering inertia more balanced, reducing the steering delay caused by excessive inertia on one side, enabling the shaving foil to quickly respond to changes in the state of the beard, and quickly switch to reverse after cutting coarse hairs in the forward direction, cleaning up short stubble close to the skin, and improving the continuity of shaving.

[0056] like Figure 4 and Figure 6As shown, in addition to the features of the above embodiments, this embodiment further defines: the auxiliary transmission assembly 52 includes an auxiliary transmission shaft 521 and an auxiliary transmission gear 522. The auxiliary transmission shaft 521 is fixed on the housing assembly 9, and the auxiliary transmission gear 522 is disposed on the auxiliary transmission shaft 521. The auxiliary transmission shaft 521 is connected to the inner side of the reversing output gear 53 for transmission. By distributing the auxiliary transmission gear 522 on the auxiliary transmission shaft 521 and connecting it to the inner side of the reversing output gear 53 for transmission, a multi-path power distribution is achieved. When the reversing output gear 53 rotates, the power is distributed to each auxiliary transmission assembly 52 through meshing with multiple auxiliary transmission gears 522 on its inner side, and then transmitted to different areas of the shaving foil. This multi-point power distribution method allows the shaving foil to be subjected to more even force, avoiding excessive wear in some areas due to excessive force, and extending the service life of the shaving foil. At the same time, the synchronous operation of multiple sets of auxiliary transmission assemblies 52 can enhance the stability of the shaving foil rotation, reduce the vibration of the shaving foil, make it more in line with the skin, and improve the smoothness of shaving.

[0057] like Figure 4 , Figure 5 and Figure 6 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the reversing output gear 53 includes a reversing output inner gear 531 and a reversing output outer gear 532. The reversing output outer gear 532 is disposed on the reversing output inner gear 531. The reversing output inner gear 531 is connected to the main transmission assembly 51, and multiple auxiliary transmission assemblies 52 are connected to the reversing output inner gear 531. The outer side of the reversing output outer gear 532 is used to connect to the blade net assembly 6 and drive the blade net assembly 6 to rotate in a first direction or a second direction. By designing the transmission connection between the reversing output inner gear 531 and the main transmission assembly 51 and multiple auxiliary transmission assemblies 52, the convergence and balanced transmission of power are achieved. When the main transmission output gear 513 drives the reversing output inner gear 531 to rotate, the annular structure of the inner gear can simultaneously mesh with multiple auxiliary transmission gears 522, evenly distributing the power input from the main transmission assembly 51 to each auxiliary transmission assembly 52. ​​This design avoids power fluctuations that may occur in a single transmission path, making the rotation of the reversing output inner gear 531 more stable. The reversing output external gear 532 is mounted on the reversing output internal gear 531 and is connected to the blade net assembly 6 for transmission, realizing the final conversion of power and precise transmission of direction. The forward and reverse rotation of the reversing output internal gear 531 is directly transmitted to the blade net assembly 6 through the external gear. Since the internal and external gears rotate synchronously, the immediacy and accuracy of the direction conversion are guaranteed.

[0058] like Figure 2 , Figure 3 and Figure 4As shown, in addition to the features of the above embodiments, this embodiment further defines: the reduction mechanism 2 includes a primary gear 21, a secondary gear 22, and a tertiary gear 23. The primary gear 21 is driven by the power input mechanism 1, the secondary gear 22 is driven by the primary gear 21, the tertiary gear 23 is driven by the secondary gear 22, and the first direction transmission mechanism 3 is driven by the tertiary gear 23. By utilizing the primary gear 21, secondary gear 22, and tertiary gear 23 to form a three-stage transmission structure, precise power control is achieved through step-by-step meshing, providing suitable speed and torque for the forward and reverse operation of the shaver's foil. The primary gear 21 is directly driven by the power input mechanism 1, and its primary function is to receive the original power and initiate the reduction process. After receiving the power from the primary gear 21, the secondary gear 22 meshes with the tertiary gear 23 to complete a secondary reduction. After two stages of transmission, the speed is further reduced, and the torque is continuously amplified, making the power characteristics more suitable for shaving needs. The tertiary gear 23, as the terminal of the reduction mechanism, is driven by the first direction transmission mechanism 3, and stably outputs the power after two stages of reduction.

[0059] Example 2

[0060] like Figure 7 and Figure 8 As shown, this embodiment discloses a blade mesh mechanism, including: the above-mentioned forward and reverse gear transmission mechanism; and a blade mesh assembly 6, which meshes with the output end of the intermediate transmission mechanism 5.

[0061] The second aspect of this application discloses a foil mechanism in which a forward and reverse gear transmission mechanism provides flexible and controllable rotational power for the foil assembly 6. The stable power from the power input mechanism 1, after optimization by the reduction mechanism 2, is transmitted to the foil assembly 6 via a forward and reverse gear transmission mechanism 5 through a direction conversion between the first transmission mechanism 3 and the second transmission mechanism 4. This power transmission path ensures that the foil assembly 6 can switch its rotation direction as needed, achieving a full-face shave without blind spots. The meshing design between the foil assembly 6 and the output end of the intermediate transmission mechanism 5 ensures the immediacy and stability of power transmission. When the intermediate transmission mechanism 5 changes its rotation direction due to forward and reverse switching, the foil assembly 6 responds synchronously, avoiding beard residue caused by power lag. Simultaneously, this direct meshing reduces power loss, allowing the forward and reverse forces to be precisely applied to the beard. The strong force during forward cutting and the continuous force during reverse cleaning complement each other, significantly improving shaving efficiency and cleanliness.

[0062] like Figure 7 and Figure 8As shown, in addition to the features of the above embodiments, this embodiment further defines: the blade assembly 6 includes a blade drive sleeve 61, a first blade connector 62, a second blade connector 63, a blade intermediate gear 64, a blade meshing member 65, a blade connecting housing 66, a first blade 67, and a second blade 68. The blade drive sleeve 61 meshes with and is driven by the reversing output gear 53. The first blade connector 62 is sleeved on and driven by the blade drive sleeve 61. The first blade connector 62 can float relative to the blade drive sleeve 61. The second blade connector 63 is engaged with the first blade connector 62. It is connected to the first connecting member 62 of the blade net, and the intermediate gear 64 of the blade net is mounted on and connected to the second connecting member 63 of the blade net. The intermediate gear 64 of the blade net can float relative to the second connecting member 63 of the blade net. The blade net meshing member 65 meshes with and is connected to the intermediate gear 64 of the blade net. The blade net connecting housing 66 is mounted on and connected to the blade net meshing member 65. The first blade net 67 is mounted on the blade net connecting housing 66. The blade net connecting housing 66 can drive the first blade net 67 to rotate. The second blade net 68 is mounted on the first blade net 67. The first blade net 67 can drive the second blade net 68 to rotate simultaneously. By meshing the blade net power gear sleeve 61 with the reversing output gear 53 as the power input end, it can efficiently receive forward and reverse rotation power and transmit it to the first connecting member 62 of the blade net. The first connecting piece 62 of the shaving foil is fitted onto the shaving foil power gear sleeve 61 and can float relative to it. This floating design allows it to slightly adjust its position according to the contours of the face, ensuring that power transmission is not affected by skin undulations and that subsequent components always remain in close contact with the skin. The second connecting piece 63 of the shaving foil engages with the first connecting piece 62 and drives it, further stabilizing the power transmission path. The intermediate gear 64 of the shaving foil is mounted on it and can float relative to it. This double floating structure provides double protection, ensuring that power is continuously transmitted to the shaving foil engagement piece 65, and also offsetting transmission errors through floating, reducing jamming during gear engagement. After the shaving foil engagement piece 65 engages with the intermediate gear, it transmits power to the shaving foil connecting housing 66. The connecting housing engages and drives the first shaving foil 67 to rotate, while simultaneously driving the second shaving foil 68 to rotate synchronously. The double shaving foil design, combined with forward and reverse rotation, lifts up the fallen beard hairs, and together with the moving blade assembly 7, it removes the user's beard from all directions, improving the thoroughness of the shave. The locking structure ensures a tight connection between the first foil 67 and the connecting housing, preventing slippage. The second foil 68 rotates synchronously with the first foil 67, utilizing the staggered arrangement of the double-layered mesh to enhance beard capture and reduce missed shaves. Simultaneously, the combination of the floating and locking mechanisms of each component gives the foil assembly 6 a degree of elasticity, allowing it to better conform to facial contours and maintain effective cutting even in complex areas, balancing shaving efficiency and skin-friendliness.

[0063] Example 3

[0064] like Figure 3 , Figure 4 , Figures 9 to 10 As shown, this embodiment discloses a shaving mechanism, including: a drive mechanism 7; the aforementioned blade mesh mechanism; a power input mechanism 1 including a power input gear 11, a power shaft 12, and a power connecting sleeve 13, the power input gear 11 and the power connecting sleeve 13 being disposed on the power shaft 12, the power input gear 11 and the power connecting sleeve 13 being disposed at opposite ends of the power shaft 12, the input end of the power input gear 11 being connected to the drive mechanism 7, and the output end of the power input gear 11 being connected to the reduction mechanism 2; and a moving blade assembly 8, the moving blade assembly 8 being disposed on the power connecting sleeve 13 and being connected to the power connecting sleeve 13.

[0065] The third aspect of this application discloses a shaving mechanism, in which a drive mechanism 7 provides the core power source for the entire shaving mechanism, and its output power is transmitted to subsequent components via a power input mechanism 1. In the power input mechanism 1, the power input gear 11 and the power connecting sleeve 13 are respectively located at both ends of the power shaft 12, achieving bidirectional power splitting and efficient transmission. The input end of the power input gear 11 is connected to the drive mechanism 7. After receiving power, one end drives the reduction mechanism 2 through its output end, providing adaptive power for the forward and reverse operation of the foil mechanism; the other end transmits power to the power connecting sleeve 13 via the power shaft 12, driving the moving blade assembly 8. This two-end distributed structure ensures balanced force on the power shaft 12, reducing power loss and vibration during power transmission, and ensuring stable power support for the foil mechanism and the moving blade assembly 8. The moving blade assembly 8 is mounted on and driven by the power connecting sleeve 13, forming a cooperative cutting mechanism with the foil mechanism under the drive of the power input mechanism 1. The relative movement between the moving blade assembly 8 and the blade mesh mechanism enables rapid cutting of the beard entering the blade mesh. The stable transmission of the power connection sleeve 13 ensures that the rotational speed of the moving blade assembly 8 matches the forward and reverse rotation rhythm of the blade mesh mechanism.

[0066] like Figure 9 , Figure 10 and Figure 11As shown, in addition to the features of the above embodiments, this embodiment further defines: the moving blade assembly 8 includes a moving blade power input component 81, a first floating device 82, a moving blade first connecting component 83, a moving blade second connecting component 84, a moving blade third connecting component 85, a second floating device 86, a moving blade fourth connecting component 87, a first moving blade 88, and a second moving blade 89. The moving blade power input component 81 is disposed on the power connecting sleeve 13 and is pulsatorically connected to the power connecting sleeve 13. The first floating device 82 is sleeved on the moving blade power input component 81 and is pulsatorically connected to the moving blade power input component 81. The moving blade power input component 81 can float relative to the first floating device 82. The moving blade first connecting component 83 is disposed on the first floating device 82 and is pulsatorically connected to the first floating device 82. The moving blade second connecting component 89... A second moving cutter connecting member 84 is mounted on and drivenly connected to the first moving cutter connecting member 83. The second moving cutter connecting member 84 can float relative to the first moving cutter connecting member 83. A third moving cutter connecting member 85 is mounted on and drivenly connected to the second moving cutter connecting member 84. A second floating device 86 is mounted on and drivenly connected to the second moving cutter connecting member 84, and can float relative to it. A first moving cutter 88 is mounted on and drivenly connected to the third moving cutter connecting member 85. A fourth moving cutter connecting member 87 is mounted on and drivenly connected to the second floating device 86. A second moving cutter 89 is mounted on the fourth moving cutter connecting member 87. By tightly driving the moving cutter power input member 81 with the power connection sleeve 13, power is stably introduced into the assembly. The first floating device 82 is mounted on the moving cutter power input member 81 and can float relative to it; this design provides basic buffering capacity for the entire moving cutter assembly. When contacting facial protrusions or depressions, the first floating device 82 can offset the pressure through slight displacement, preventing the blade from irritating the skin due to rigid contact, while ensuring continuous power transmission to the first connecting member 83 of the blade. After the first connecting member 83 of the blade is driven by the first floating device 82, the power is transmitted to the second connecting member 84 of the blade, and the floating characteristic of the second connecting member 84 of the blade further enhances the adaptability. Combined with the dual floating design of the second floating device 86, it ensures that the blade always maintains appropriate pressure on the skin, preventing missed shaves due to insufficient pressure and redness and swelling due to excessive pressure. The third connecting member 85 of the blade connects the second connecting member 84 of the blade to the foil mechanism, realizing the linkage calibration of the blade and the foil, ensuring that the cutting gap between the first blade 88 and the foil is always precise. Combined with the fourth connecting member 87 of the blade driven by the second floating device 86 and the second blade 89, it achieves all-round removal of the user's beard. The multiple floating structure not only improves the fit but also reduces transmission errors. The floating of the second connecting member 84 relative to the first connecting member and the floating of the second floating device 86 relative to the second connecting member can offset minor deviations in power transmission and prevent friction or jamming caused by misalignment between the moving blade assembly 8 and the blade net assembly 6.

[0067] Example 4

[0068] like Figures 1 to 13 As shown, this embodiment discloses a shaver, including: the shaving mechanism described above; a handle housing assembly 9, a portion of the forward and reverse gear transmission mechanism and the drive mechanism 7 are disposed on the handle housing assembly 9, a portion of the moving blade assembly 8 passes through the handle housing assembly 9, and the remaining portion of the moving blade assembly 8 is disposed on the blade foil assembly 6; a blade head housing 10, the blade foil assembly 6 is disposed on the blade head housing 10; and a control assembly 100, the control assembly 100 is disposed on the handle housing assembly 9.

[0069] The fourth aspect of this application discloses a shaver in which the shaving mechanism, as the core working component, can precisely handle different beard conditions and complex facial areas through the coordinated operation of its forward and reverse gear transmission mechanism, foil assembly 6, and moving blade assembly 8. The flexible switching between forward and reverse rotation allows the foil assembly 6 and moving blade assembly 8 to efficiently cut coarse beard hairs and thoroughly remove short stubble. The multiple floating structure of the moving blade assembly 8 ensures good contact with the skin, reducing irritation and laying a solid foundation for a good shaving effect. The handle housing assembly 9 plays a crucial role in supporting and connecting the components. It provides a stable mounting space for the forward and reverse gear transmission mechanism and the drive mechanism 7, ensuring the orderly operation of internal components and reducing vibration and noise during operation. Simultaneously, part of the moving blade assembly 8 passes through the handle housing assembly 9, while the remaining part is set on the foil assembly 6. This layout achieves smooth power transmission and makes the overall structure more compact, facilitating handheld operation. The shaving head housing 10 provides a reliable mounting platform for the foil assembly 6, ensuring that the foil assembly 6 remains stable during shaving and will not shift due to vibration or external force. This guarantees precise alignment between the foil assembly 6 and the moving blade assembly 8, thereby maintaining a stable cutting effect. The control component 100 is located on the handle housing assembly 9, allowing the user to adjust the operating status of the shaving mechanism.

[0070] like Figure 12 and Figure 13As shown, in addition to the features of the above embodiments, this embodiment further defines: the handle housing assembly 9 includes a handle outer shell 91, a first handle inner shell 92, a second handle inner shell 93, a third handle inner shell 94, a fourth handle inner shell 95, and a fifth handle inner shell 96. The first handle inner shell 92 is disposed on the handle outer shell 91, the second handle inner shell 93 is disposed on the first handle inner shell 92, the third handle inner shell 94 is disposed on the second handle inner shell 93 and / or the first handle inner shell 92, and the fourth handle inner shell 95 is disposed on the third handle inner shell 94 and / or the first handle inner shell 96. On the housing 92, the fifth handle inner housing 96 is mounted on the fourth handle inner housing 95. The power input mechanism 1 is mounted on the first handle inner housing 92 and the third handle inner housing 94. The reduction mechanism 2 is mounted on the second handle inner housing 93, the third handle inner housing 94, and the fourth handle inner housing 95. The first direction transmission mechanism 3 and the second direction transmission mechanism 4 are mounted on the third handle inner housing 94 and the fourth handle inner housing 95. The drive mechanism 7 is mounted on the first handle inner housing 92. A portion of the moving blade assembly 8 passes through the fifth handle inner housing 96, and the blade head housing 10 is mounted on the fifth handle inner housing 96. By using the handle outer housing 91 as the outermost structure, not only is a unified appearance provided for the entire handle, but it also serves a protective function, isolating the internal components from external dust and moisture. The first handle inner housing 92 carries the power input mechanism 1 and the drive mechanism 7. As the mounting carrier of the power source, its stability directly affects the stability of the power output. Through a tight connection with the handle outer housing 91, it can reduce the vibration transmission during the operation of the drive mechanism 7, prevent the power input mechanism 1 from shifting due to shaking, and ensure that the power transmission path from the source to the subsequent mechanism is always accurate. The second handle inner housing 93, the third handle inner housing 94, and the fourth handle inner housing 95 jointly fix the reduction mechanism 2. The reduction mechanism 2, composed of three-stage gears, needs to achieve precise meshing under stable support. The enclosed fixation of the multi-layer inner housing can limit the radial runout of the gears, ensure that the power loss during the step-by-step reduction process is minimized, and at the same time prevent abnormal noise caused by loose gears. The third handle inner housing 94 and the fourth handle inner housing 95 also jointly carry the first direction transmission mechanism 3 and the second direction transmission mechanism 4. Their mounting structure provides balanced support for the forward and reverse transmission gears, ensuring that the force is uniform when the gears mesh, reducing tooth wear, and extending the service life of the mechanism. The inner housing 96 of the fifth handle serves as a passage for the moving blade assembly 8, enabling the razor to be compact.

[0071] like Figure 12 and Figure 13As shown, in addition to the features of the above embodiments, this embodiment further defines: the cutter head housing 10 includes a cutter head outer shell 101, a cutter head connecting shell 102, and a cutter head inner shell 103. One end of the cutter head connecting shell 102 is disposed on the cutter head outer shell 101, and the other end of the cutter head connecting shell 102 is disposed on the handle housing assembly 9. The cutter head inner shell 103 is disposed on the cutter head outer shell 101 and / or the cutter head connecting shell 102, and the cutter head mesh assembly 6 is disposed on the cutter head outer shell 101 and / or the cutter head connecting shell 102 and / or the cutter head inner shell 103. By using the cutter head outer shell 101 as the outer protective structure of the cutter head, a mounting base is provided for the cutter head connecting shell 102 and the cutter head inner shell 103, maintaining the stability of the overall shape of the cutter head. One end of the cutter head connecting shell 102 is connected to the cutter head outer shell 101, and the other end is connected to the handle housing assembly 9. It is a key component connecting the cutter head and the handle, realizing the mechanical connection between the two. The inner shell 103 of the cutter head is set on the outer shell 101 of the cutter head and the connecting shell 102 of the cutter head. Together with the connecting shell 102 of the cutter head, it fixes the cutter wire assembly 6. It can precisely limit the position of the cutter wire assembly 6 and ensure that the cooperation between the cutter wire assembly 6 and the moving cutter assembly 8 is always in the best state. This stable fixation prevents the cutter wire assembly 6 from shifting during forward and reverse rotation.

[0072] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0073] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A positive and negative gear transmission mechanism characterized by, The aforementioned forward and reverse gear transmission mechanism includes: Power input mechanism (1); A speed reduction mechanism (2) is provided, the input end of which is connected to the power input mechanism (1) in a transmission manner. A first directional transmission mechanism (3) is connected to the output end of the reduction mechanism (2). The second direction transmission mechanism (4) is connected to the first direction transmission mechanism (3) in a transmission manner, and the rotation direction of the second direction transmission mechanism (4) is opposite to that of the first direction transmission mechanism (3). An intermediate transmission mechanism (5) is partially connected to the first direction transmission mechanism (3) and when the intermediate transmission mechanism (5) is connected to the first direction transmission mechanism (3), the intermediate transmission mechanism (5) is interleaved with the second direction transmission mechanism (4); the intermediate transmission mechanism (5) is partially connected to the second direction transmission mechanism (4) and when the intermediate transmission mechanism (5) is connected to the second direction transmission mechanism (4), the intermediate transmission mechanism (5) is interleaved with the first direction transmission mechanism (3). When the intermediate transmission mechanism (5) is partially connected to the first direction transmission mechanism (3), the first direction transmission mechanism (3) can drive the intermediate transmission mechanism (5) to rotate in the first direction. When the intermediate transmission mechanism (5) is partially connected to the second direction transmission mechanism (4), the second direction transmission mechanism (4) can drive the intermediate transmission mechanism (5) to rotate in the second direction. The first direction and the second direction are opposite.

2. The forward-reverse gear mechanism according to claim 1, characterized in that, The first directional transmission mechanism (3) includes a first directional power gear (31) and a first directional transmission gear (32). The first directional transmission gear (32) is disposed on the first directional power gear (31). The first directional power gear (31) is connected to the output end of the reduction mechanism (2). The second directional transmission mechanism (4) includes a second directional power gear (41) and a second directional transmission gear (42). The second directional transmission gear (42) is disposed on the second directional power gear (41). The second directional power gear (41) is connected to the first directional power gear (31). When the first directional transmission tooth (32) rotates with the first directional power tooth (31), it can mesh with the intermediate transmission mechanism (5) and drive the intermediate transmission mechanism (5) to rotate in the first direction. When the second directional transmission tooth (42) rotates with the second directional power tooth (41), it can mesh with the intermediate transmission mechanism (5) and drive the intermediate transmission mechanism (5) to rotate in the second direction. The meshing time of the second directional transmission tooth (42) and the intermediate transmission mechanism (5) is alternated with the meshing time of the first directional transmission tooth (32) and the intermediate transmission mechanism (5).

3. The forward-reverse gear mechanism of claim 1, wherein The intermediate transmission mechanism (5) includes a main transmission assembly (51), an auxiliary transmission assembly (52), and a reversing output gear (53). The main transmission assembly (51) can mesh with the first direction transmission mechanism (3) or the second direction transmission mechanism (4). The main transmission assembly (51) is connected to the reversing output gear (53). There are multiple auxiliary transmission assemblies (52), and multiple auxiliary transmission assemblies (52) are connected to the reversing output gear (53).

4. The forward and reverse gear transmission mechanism according to claim 3, characterized in that, The main drive assembly (51) includes a main drive input gear (511), a main drive output shaft (512), and a main drive output gear (513). The main drive input gear (511) and the main drive output gear (513) are disposed on the main drive output shaft (512), and are located on opposite sides of the main drive output shaft (512). The main drive input gear (511) can mesh with the first directional drive mechanism (3) or the second directional drive mechanism (4). The main drive input gear (511) meshes with the first directional drive mechanism (3). The meshing time is staggered with the meshing time of the main drive input gear (511) and the second direction transmission mechanism (4). When the main drive input gear (511) meshes with the first direction transmission mechanism (3), the main drive input gear (511) rotates in the first direction. When the main drive input gear (511) meshes with the second direction transmission mechanism (4), the main drive input gear (511) rotates in the second direction. When the main drive input gear (511) rotates, it can drive the main drive output gear (513) to rotate. The main drive output gear (513) is connected to the inner side of the reversing output gear (53). And / or the auxiliary drive assembly (52) includes an auxiliary drive shaft (521) and an auxiliary drive gear (522), the auxiliary drive shaft (521) being fixed on the housing assembly (9), the auxiliary drive gear (522) being disposed on the auxiliary drive shaft (521), and the auxiliary drive gear (522) being connected to the inner side of the reversing output gear (53) in a transmission connection; And / or the reversing output gear (53) includes a reversing output internal gear (531) and a reversing output external gear (532), the reversing output external gear (532) is disposed on the reversing output internal gear (531), the reversing output internal gear (531) is connected to the main transmission assembly (51), a plurality of the auxiliary transmission assemblies (52) are connected to the reversing output internal gear (531), and the outer side of the reversing output external gear (532) is used to be connected to the blade net assembly (6) and drive the blade net assembly (6) to rotate in the first direction or the second direction; And / or the reduction mechanism (2) includes a first-stage gear (21), a second-stage gear (22) and a third-stage gear (23), wherein the first-stage gear (21) is driven by the power input mechanism (1), the second-stage gear (22) is driven by the first-stage gear (21), the third-stage gear (23) is driven by the second-stage gear (22), and the first direction transmission mechanism (3) is driven by the third-stage gear (23).

5. A knife net mechanism characterized in that, The aforementioned blade mesh mechanism includes: The forward and reverse gear transmission mechanism according to any one of claims 1 to 4; The blade mesh assembly (6) engages with the output end of the intermediate transmission mechanism (5).

6. The knife net mechanism of claim 5, wherein, The blade net assembly (6) includes a blade net power sleeve (61), a blade net first connector (62), a blade net second connector (63), a blade net intermediate gear (64), a blade net meshing member (65), a blade net connecting housing (66), a first blade net (67), and a second blade net (68). The blade net power sleeve (61) meshes with and is driven by the reversing output gear (53). The first blade net connector (62) is sleeved on the blade net power sleeve (61) and is driven by the blade net power sleeve (61). The first blade net connector (62) can float relative to the blade net power sleeve (61). The second blade net connector (63) is engaged with and is driven by the first blade net connector (62). The intermediate gear (64) is disposed on the second connecting member (63) of the blade net and is drivenly connected to the second connecting member (63). The intermediate gear (64) can float relative to the second connecting member (63). The blade net meshing member (65) meshes with the intermediate gear (64) and is drivenly connected to the intermediate gear (64). The blade net connecting housing (66) is locked on the blade net meshing member (65) and is drivenly connected to the blade net meshing member (65). The first blade net (67) is locked on the blade net connecting housing (66). The blade net connecting housing (66) can drive the first blade net (67) to rotate. The second blade net (68) is disposed on the first blade net (67). The first blade net (67) can drive the second blade net (68) to rotate simultaneously.

7. A shaving mechanism characterized by, The shaving mechanism includes: Drive mechanism (7); The blade mesh mechanism according to any one of claims 5 to 6; The power input mechanism (1) includes a power input gear (11), a power shaft (12), and a power connecting sleeve (13). The power input gear (11) and the power connecting sleeve (13) are disposed on the power shaft (12). The power input gear (11) and the power connecting sleeve (13) are respectively disposed at both ends of the power shaft (12). The input end of the power input gear (11) is connected to the drive mechanism (7) in a transmission connection, and the output end of the power input gear (11) is connected to the reduction mechanism (2) in a transmission connection. The moving blade assembly (8) is disposed on the power connection sleeve (13) and is connected to the power connection sleeve (13) in a transmission manner.

8. A shaving unit according to claim 7, characterized in that The moving blade assembly (8) includes a moving blade power input component (81), a first floating device (82), a moving blade first connector (83), a moving blade second connector (84), a moving blade third connector (85), a second floating device (86), a moving blade fourth connector (87), a first moving blade (88), and a second moving blade (89). The moving blade power input component (81) is disposed on the power connection sleeve (13) and is pulsatorically connected to the power connection sleeve (13). The first floating device (82) is sleeved on the moving blade power input component (81) and is pulsatorically connected to the moving blade power input component (81). The moving blade power input component (81) is capable of floating relative to the first floating device (82). The first moving blade connector (83) is disposed on the first floating device (82) and is pulsatorically connected to the first floating device (82). The second moving blade connector (84) is sleeved on the first moving blade first connector (85). A connecting member (83) is connected to the first connecting member (83) of the moving blade, the second connecting member (84) of the moving blade is able to float relative to the first connecting member (83), the third connecting member (85) of the moving blade is disposed on the second connecting member (84), the third connecting member (85) of the moving blade is connected to the second connecting member (84), the second floating device (86) is disposed on the second connecting member (84) of the moving blade and is connected to the second connecting member (84), the second floating device (86) is able to float relative to the second connecting member (84), the first moving blade (88) is disposed on the third connecting member (85) of the moving blade, the fourth connecting member (87) of the moving blade is disposed on the second floating device (86) and is connected to the second floating device (86), and the second moving blade (89) is disposed on the fourth connecting member (87) of the moving blade.

9. A shaver characterized by The razor described includes: The shaving mechanism according to any one of claims 7 to 8; Handle housing assembly (9), a portion of the forward and reverse gear transmission mechanism and the drive mechanism (7) are disposed on the handle housing assembly (9), a portion of the moving blade assembly (8) passes through the handle housing assembly (9), and the moving blade assembly (8) is disposed on the blade mesh assembly (6); The cutter head housing (10) is provided with the cutter mesh assembly (6) disposed on the cutter head housing (10); A control component (100) is disposed on the handle housing assembly (9).

10. The razor according to claim 9, characterized in that, The handle housing assembly (9) includes a handle outer shell (91), a first handle inner shell (92), a second handle inner shell (93), a third handle inner shell (94), a fourth handle inner shell (95), and a fifth handle inner shell (96). The first handle inner shell (92) is disposed on the handle outer shell (91), the second handle inner shell (93) is disposed on the first handle inner shell (92), the third handle inner shell (94) is disposed on the second handle inner shell (93) and / or the first handle inner shell (92), the fourth handle inner shell (95) is disposed on the third handle inner shell (94) and / or the first handle inner shell (92), and the fifth handle inner shell (96) is disposed on the handle outer shell (91). The power input mechanism (1) is disposed on the first handle inner housing (92) and the third handle inner housing (94), the deceleration mechanism (2) is disposed on the second handle inner housing (93), the third handle inner housing (94) and the fourth handle inner housing (95), the first direction transmission mechanism (3) and the second direction transmission mechanism (4) are disposed on the third handle inner housing (94) and the fourth handle inner housing (95), the drive mechanism (7) is disposed on the first handle inner housing (92), a portion of the moving blade assembly (8) passes through the fifth handle inner housing (96), and the blade head housing (10) is disposed on the fifth handle inner housing (96). And / or the blade housing (10) includes a blade outer shell (101), a blade connecting shell (102) and a blade inner shell (103), one end of the blade connecting shell (102) is disposed on the blade outer shell (101), the other end of the blade connecting shell (102) is disposed on the handle housing assembly (9), the blade inner shell (103) is disposed on the blade outer shell (101) and / or the blade connecting shell (102), and the blade mesh assembly (6) is disposed on the blade outer shell (101) and / or the blade connecting shell (102) and / or the blade inner shell (103).

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