A detachable shaver head and its connection structure

Abstract

The present invention provides a detachable razor head and its connection structure, belonging to the technical field of razors. A detachable razor head includes a gear box, a ball head and a cutter head assembly; the present invention provides a ball head and a cutter head assembly at the bottom and top of the gear box respectively, and provides a mounting hole with a slot around it at the bottom of the gear box housing, and provides a claw and a clamping edge at one end of the ball head, which can ensure that the end of the ball head extending into the gear box is clamped by the claw and the slot, and the clamping edge abuts against the gear box housing, thereby realizing the installation of the ball head on the gear box. At the same time, a ball head fixing frame is also provided in the gear box to press the ball head and make spherical contact with the ball head. The structure is simple and ensures the stability of universal rotation. In addition, the connection structure for connecting the head of the detachable razor includes a sleeve and a U-shaped retaining spring. The sleeve is plugged into the ball head, and the U-shaped retaining spring cooperates with the recess on the ball head, which facilitates the disassembly and assembly of the ball head and is more conducive to later maintenance.

Description

Technical Field

[0001] The present invention relates to the technical field of shavers, in particular to a detachable shaver head. Background Art

[0002] Electric shavers are popular among consumers due to their ease of use and small size.

[0003] However, the razors currently on the market are divided into two types: integrated and detachable. Due to structural limitations, integrated razors are prone to insufficient angle adjustment during use and cannot adhere closely to the skin. At the same time, they need to be taken out as a whole during charging, causing many inconveniences. Although the detachable razors currently on the market can adhere closely to the skin, their universal rotation mechanism and detachable buckle structure have poor stability, complex structure, and are inconvenient to disassemble and assemble, causing inconvenience to subsequent maintenance. Summary of the Invention

[0004] In view of the above-mentioned problems existing in the prior art, the present invention aims to provide a detachable shaver head and its connecting structure, wherein the connecting structure for connecting the head is arranged in the handle, thereby realizing the detachable connection between the head and the handle. At the same time, a plurality of card slots are provided at the bottom of the gear housing of the head, and a plurality of claws cooperating with the card slots are provided at one end of the ball head, and the end faces of the ball head provided with the claws and the surfaces of the claws form a spherical surface, and a ball head fixing frame is provided in the gear housing, and a spherical depression corresponding to the spherical surface is provided on the bottom surface of the ball head fixing frame, so that the card slots of the ball head can be fixed by the cooperation between the spherical depression of the ball head fixing frame and the spherical surface of the ball head. The claw is pressed tightly in the slot, which facilitates the universal rotation of the head, and a clamping edge is provided on the outer wall of the ball head, which is fixed to the gear box body through the claw and the clamping edge, thereby achieving a stable connection of the ball head to the gear box body and improving the stability of the structure. In addition, a recess is provided on the outer wall of the end of the ball head extending out of the gear box body, and a U-shaped retaining ring corresponding to the recess is provided in the connecting structure, so that after the end of the ball head with the recess is inserted into the U-shaped retaining spring, the protrusion on the end of the U-shaped retaining spring can be stuck in the recess, thereby realizing the connection between the ball head and the U-shaped retaining spring, thereby realizing the connection between the head and the handle. The structure is simple, easy to disassemble and assemble, and more conducive to later maintenance.

[0005] The specific technical solutions are as follows:

[0006] A detachable shaver head has the following characteristics, including: a gear box, a ball head, and a cutter head assembly, wherein:

[0007] The gearbox includes a gearbox housing, a gearbox cover, and an internal transmission assembly. The gearbox housing is provided with a cavity. A mounting hole is provided at the bottom of the gearbox housing, and a plurality of slots are provided on the inner wall of the bottom of the gearbox housing and around the mounting hole. The internal transmission assembly is provided in the gearbox housing. The gearbox cover is provided on the cavity of the gearbox housing and covers the internal transmission assembly.

[0008] The ball head is arranged in a columnar shape and is hollow. A plurality of claws corresponding to the slots are arranged at the edge of the end of the ball head, and the end surface of the end of the ball head provided with the claws and the surface of the claws together form a spherical surface. At the same time, a clamping edge is provided on the outer wall of the end of the ball head provided with the claws, and a gap is provided between the clamping edge and the claws. A recess is provided on the outer wall of the other end of the ball head. In addition, the spherical end of the ball head extends into the gear box housing, and the claws are clamped in the slots, and the clamping edge is located outside the gear box housing.

[0009] The cutter head assembly is mounted on the gearbox cover and is connected to the internal transmission assembly within the gearbox;

[0010] The internal transmission assembly includes a ball head fixing frame, which is arranged in the cavity of the gear box housing, and the bottom surface of the ball head fixing frame is provided with a spherical depression corresponding to the spherical surface on the ball head. The ball head fixing frame presses the end of the ball head extending into the gear box housing, and the spherical surface rests on the spherical depression to achieve universal rotation.

[0011] In the above-mentioned detachable shaver head, the ball head and the clamping claws are arranged in a "A" shape, and the clamping claws are inclined toward the clamping edge.

[0012] The above-mentioned detachable razor head, wherein the internal transmission assembly also includes a planetary gear assembly and a center gear assembly, a plurality of vertex angles are provided at the edge of the ball head fixing frame, and a planetary gear assembly is mounted on each vertex angle, and at the same time, a through hole corresponding to the mounting hole is provided in the center of the ball head fixing frame, the center gear assembly is arranged in the center of the ball head fixing frame and meshes with each planetary gear assembly, and one end of the center gear assembly extends out of the gear box housing through the through hole and the mounting hole.

[0013] In the above-mentioned detachable shaver head, one end of the central tooth assembly extending out of the gear box housing is inserted into the hollow of the ball head.

[0014] In the above-mentioned detachable shaver head, the output shaft of each planetary gear assembly extends out of the gear box cover.

[0015] The above-mentioned detachable shaver head also includes a ball head elastic part, which is arranged in a frustum shape, and one end of the ball head elastic part is connected to the bottom of the gear box housing, and the other end of the ball head elastic part is sleeved outside the ball head for resetting after universal rotation.

[0016] In the above-mentioned detachable shaver head, the end of the ball head elastic member facing away from the gear box housing is wrapped around the clamping edge and is located on the side of the clamping edge facing away from the claw.

[0017] In the above-mentioned detachable shaver head, the ball head elastic member is a bellows structure.

[0018] A connection structure, characterized in that it is used to connect the head of any of the above-mentioned detachable razors, including a U-shaped retaining spring and a sleeve, the sleeve being fixed to the handle, a retaining hole corresponding to the recess being opened on the wall of the sleeve, the U-shaped retaining spring being sleeved outside the sleeve, and the edge of the opening side of the U-shaped retaining spring being bent in a "V" shape into the opening to form a first retaining position, and the first retaining position extending into the retaining hole.

[0019] The positive effects of the above technical solution are:

[0020] The head of the above-mentioned detachable shaver is provided with a mounting hole at the bottom of the gear box housing, and a card groove is provided around the mounting hole. At the same time, a ball head with a claw and a card edge is provided, and the end surface of the end of the ball head provided with the claw and the surface of the claw together form a spherical surface, so that after the spherical end of the ball head extends from the mounting hole into the gear box housing, it can be clamped into the card groove through the claw and limited by the card edge, thereby realizing the connection between the ball head and the gear box housing, and the bottom surface of the ball head fixing frame is provided with a spherical depression corresponding to the spherical surface, so that when the ball head fixing frame presses the ball When the head is turned, the spherical surface abuts against the spherical recess, which facilitates the universal rotation of the head. A ball head elastic member is provided between the bottom of the gear box housing and the ball head for resetting the head after universal rotation. In addition, a recess is provided on the outer wall of the ball head, and a connecting structure with a U-shaped retaining spring corresponding to the recess is provided on the handle, so that the ball head can be directly inserted into the U-shaped retaining spring, thereby realizing the detachable connection between the head and the handle of the detachable shaver. The structure is simple and easy to disassemble and assemble. In addition, the universal rotation mechanism and the detachable buckle structure are more stable in use and more conducive to later maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 FIG1 is a structural diagram of an embodiment of a detachable shaver head of the present invention;

[0022] Figure 2 A cross-sectional view of a preferred embodiment of the present invention;

[0023] Figure 3 An exploded view of a preferred embodiment of the present invention;

[0024] Figure 4 A partial cross-sectional view of a preferred embodiment of the present invention;

[0025] Figure 5 A structural diagram of a preferred embodiment of the present invention from one perspective;

[0026] Figure 6 A structural diagram showing a connection structure of a preferred embodiment of the present invention from one perspective;

[0027] Figure 7 This is a structural diagram from another perspective of the connection structure of a preferred embodiment of the present invention.

[0028] In the accompanying drawings: 1. Gearbox; 11. Gearbox housing; 12. Gearbox cover; 13. Internal transmission assembly; 111. Cavity; 112. Mounting hole; 113. Slot; 131. Ball head fixing bracket; 132. Planetary gear assembly; 133. Center gear assembly; 2. Ball head; 21. Hollow; 22. Claw; 23. Clamping edge; 24. Recess; 3. Cutter head assembly; 4. Ball head elastic part; 5. Handle; 51. U-shaped retaining ring; 52. Sleeve. DETAILED DESCRIPTION

[0029] In order to make the technical means, creative features, objectives and effects of the present invention easier to understand, the following embodiments are combined with the attached Figure 1 To the attached Figure 7 The technical solution provided by the present invention is described in detail, but the following content is not intended to limit the present invention.

[0030] Figure 1 FIG1 is a structural diagram of an embodiment of a detachable shaver head of the present invention; Figure 2 A cross-sectional view of a preferred embodiment of the present invention; Figure 3 An exploded view of a preferred embodiment of the present invention; Figure 4 A partial cross-sectional view of a preferred embodiment of the present invention; Figure 5 This is a structural diagram of a preferred embodiment of the present invention from one perspective. Figures 1 to 5 As shown, the head of the detachable shaver provided in this embodiment includes: a gear box 1, a ball head 2, and a cutter head assembly 3. The ball head 2 is arranged at the bottom of the gear box 1. The gear box 1 is detachably connected to the handle 5 through the ball head 2. The cutter head assembly 3 is arranged at the top of the gear box 1, so that the gear box 1 can drive the blade and other structures in the cutter head assembly 3 to rotate to achieve a shaving operation.

[0031] Specifically, the gearbox 1 includes a gearbox housing 11, a gearbox cover 12 and an internal transmission assembly 13. The gearbox housing 11 is provided with a cavity 111, which facilitates the arrangement of structures such as the internal transmission assembly 13, and makes more reasonable use of space. A mounting hole 112 is provided at the bottom of the gearbox housing 11, and a plurality of slots 113 are provided on the inner wall of the bottom of the gearbox housing 11 and around the mounting hole 112. The mounting holes 112 and the slots 113 provide a structural basis for subsequent installation with the ball head 2. In addition, the internal transmission assembly 13 is arranged in the gearbox housing 11, and the gearbox cover 12 is arranged on the cavity 111 of the gearbox housing 11 and covers the internal transmission assembly 13, thereby realizing a reasonable arrangement of the overall structure of the gearbox 1.

[0032] Specifically, the ball head 2 arranged at the bottom of the gear box 1 is columnar and has a hollow 21. The hollow 21 of the ball head 2 facilitates the connection between the internal transmission component 13 in the gear box 1 and the driver in the handle 5, and can also protect the internal transmission component 13, making the structural design more reasonable. In addition, a plurality of claws 22 corresponding to the slots 113 are provided at the edge of the end of the ball head 2, and the end face of the end of the ball head 2 with the claws 22 and the surface of the claws 22 together form a spherical surface. At the same time, a locking edge 23 is provided on the outer wall of the end of the ball head 2 with the locking edge 23, and a gap is provided between the locking edge 23 and the claws 22, so that the size of the gap is consistent with the wall thickness of the gear box housing 11 at the slot 113, and the spherical end of the ball head 2 extends into the gear box housing 11, the claws 22 are locked in the slot 113, and the locking edge 23 is located outside the gear box housing 11, so that after the claws 22 are locked in the slot 113, the claws 22 and the locking edge 23 can fix the ball head 2 on the gear box housing 11 and limit it. In addition, a recess 24 is provided on the outer wall of the other end of the ball head 2, which facilitates the detachable connection between the ball head 2 and the handle 5.

[0033] Specifically, the cutter head assembly 3 arranged on the top of the gear box 1 is arranged on the gear box cover 12 and is connected to the internal transmission assembly 13 in the gear box 1. The cutter head assembly 3 includes several shaving positions, and the blades in each shaving position are connected to the internal transmission assembly 13, that is, the blades are driven to rotate by the internal transmission assembly 13, thereby realizing the shaving operation, and the structural design is more reasonable.

[0034] Specifically, the internal transmission assembly 13 arranged in the cavity 111 of the gearbox housing 11 includes a ball head fixing frame 131, which is arranged above the ball head 2, and the bottom surface of the ball head fixing frame 131 is provided with a spherical recess corresponding to the spherical surface on the ball head 2, so that after the ball head 2 and the ball head fixing frame 131 are installed, the ball head fixing frame 131 presses the end of the ball head 2 extending into the gearbox housing 11, that is, the spherical surface of the ball head 2 abuts against the spherical recess of the ball head fixing frame 131, so that the ball head fixing frame 131 can be universally rotated with the ball head 2, providing a structural basis for the universal rotation of the entire head.

[0035] More specifically, the ball head 2 and the claw 22 are arranged in an "A" shape, and the claw 22 is inclined toward the side of the clamping edge 23, which not only facilitates the formation of the spherical surface on the ball head 2, but also allows the claw 22 to be inclined toward the end of the ball head 2 extending out of the gear box 1 after the spherical end of the ball head 2 extends into the gear box housing 11, which can better fit the axial direction of the ball head 2, improve the strength of the structure, prevent the ball head 2 from detaching from the gear box 1, and make the structural design more reasonable.

[0036] More specifically, the internal transmission assembly 13 disposed in the cavity 111 of the gearbox housing 11 and covered by the gearbox cover 12 also includes a planetary gear assembly 132 and a center gear assembly 133. Several vertex angles are provided at the edge of the ball head fixing frame 131, and a planetary gear assembly 132 is installed on each vertex angle, that is, the ball head fixing frame 131 can also serve as a gear bracket to install several planetary gear assemblies 132 in the cavity 111 of the gearbox housing 11, thereby facilitating the transmission of the planetary gear assemblies 132. At the same time, a through hole corresponding to the mounting hole 112 is provided in the center of the ball head fixing frame 131, and the center gear assembly 133 is arranged at the center of the ball head fixing frame 131 and engages with each planetary gear assembly 132, and one end of the center gear assembly 133 extends out of the gear box housing 11 from the through hole and the mounting hole 112. The installation of the center gear assembly 133 is achieved through the ball head fixing frame 131, and the center gear assembly 133 can also be transmitted to the driver in the handle 5 through the through hole, and the structural design is more reasonable.

[0037] More specifically, one end of the center tooth assembly 133 extending outside the gear box housing 11 is inserted into the hollow 21 of the ball head 2, that is, after the head of the detachable shaver is installed on the handle 5, one end of the center tooth assembly 133 inserted in the hollow 21 of the ball head 2 can be connected to the output shaft of the driver in the handle 5, so that the driver in the handle 5 drives the center tooth assembly 133 to rotate, and then the center tooth assembly 133 drives the planetary gear assembly 132 to rotate, completing the power transmission in the gear box 1, and at the same time, the ball head 2 can also serve as a protective cover to protect the end of the center tooth assembly 133 extending outside the gear box housing 11, thereby increasing safety.

[0038] More specifically, the output shaft of each planetary gear assembly 132 extends out of the gear box cover 12, so that after the cutter head assembly 3 is installed on the gear box cover 12, the blades in several shaving positions on the cutter head assembly 3 can be connected to the output shafts of the corresponding planetary gear assemblies 132, so that the power generated by the driver in the handle 5 is transmitted to the blades through the central gear assembly 133 and the planetary gear assembly 132 in sequence, thereby realizing the shaving operation, and the structural design is more reasonable.

[0039] More specifically, a ball head elastic member 4 is further provided at the bottom of the gear box housing 11. The ball head elastic member 4 is arranged in a frustum shape, and one end of the ball head elastic member 4 is connected to the bottom of the gear box housing 11, and the other end of the ball head elastic member 4 is sleeved outside the ball head 2, so that the ball head elastic member 4 can serve as an external protective cover of the ball head 2 to protect the ball head 2. At the same time, it can also adapt to the universal adjustment of the head of the entire detachable shaver, facilitate the reset of the head after universal rotation, and the structural design is more reasonable.

[0040] More specifically, the end of the ball head elastic member 4 facing away from the gear box housing 11 is wrapped around the outside of the clamping edge 23 and is located on the side of the clamping edge 23 facing away from the claw 22, so that the ball head elastic member 4 can wrap around the ball head 2 except for the part where the recess 24 is provided, which has higher protection. At the same time, it can also avoid interference with the disassembly and assembly of the ball head 2 on the handle 5, and the structural design is more reasonable.

[0041] More specifically, the ball head elastic member 4 is a bellows structure, which can better adapt to the universal adjustment of the head of the detachable shaver, has a strong structural deformation ability, and is more adaptable.

[0042] The head of the detachable shaver provided in this embodiment includes a gear box 1, a ball head 2 and a cutter head assembly 3; the ball head 2 and the cutter head assembly 3 are respectively provided at the bottom and top of the gear box 1, and a mounting hole 112 with a card groove 113 around it is provided at the bottom of the gear box housing 11, and a claw 22 corresponding to the card groove 113 and a card edge 23 forming a gap with the claw 22 are provided at one end of the ball head 2, and the end face of the claw 22 at one end of the ball head 2 and the surface of the claw 22 together form a spherical surface, which can ensure that the end of the ball head 2 inserted into the gear box 1 is matched through the claw 22 and the card groove 113, and the card edge 23 abuts against the gear box housing 11, the ball head 2 is installed on the gear box 1, and a ball head fixing frame 131 is provided in the gear box 1 to press the ball head 2, and the bottom surface of the ball head fixing frame 131 is provided with a spherical depression corresponding to the spherical surface of the ball head 2, so that the spherical surface can rest against the spherical depression, providing a structural basis for the head to achieve universal rotation, ensuring the stability of universal rotation and detachability, and a ball head elastic member 4 connecting the bottom of the gear box housing 11 and the ball head 2 is further provided to achieve reset after universal rotation. In addition, a depression 24 is provided on the ball head 2, which facilitates the card connection with the structure in the handle 5. The structure is simple, easy to assemble and disassemble, and more conducive to later maintenance.

[0043] In addition, a connecting structure for connecting the head of the detachable shaver is also provided. Figure 6 A structural diagram showing a connection structure of a preferred embodiment of the present invention from one perspective; Figure 7 This is a structural diagram from another perspective of the connection structure of a preferred embodiment of the present invention. Figures 1 to 7 As shown, the connection structure includes: a U-shaped retaining spring 51 and a sleeve 52. The sleeve 52 is fixed to the handle 5. A retaining hole corresponding to the recess 24 is opened on the wall of the sleeve 52. The U-shaped retaining spring 51 is sleeved on the outside of the sleeve 52, and the edge of the opening side of the U-shaped retaining spring 51 is bent into a "V" shape inward to form a first retaining position, and the first retaining position extends into the retaining hole, so that when the head is connected to the handle 5, the end of the ball head 2 on the head with the recess 24 is inserted into the sleeve 52. When the shaver is detached, the first position of the U-shaped retaining spring 51 is engaged with the recess 24 of the ball head 2, thereby limiting the position of the ball head 2. This completes the connection between the ball head 2 and the handle 5, and the connection between the head of the detachable shaver and its handle 5 is completed. When disassembling, it is only necessary to reversely pull the ball head 2 out of the sleeve 52, and the first position of the U-shaped retaining spring 51 is disengaged from the recess 24, thereby separating the ball head 2 and the handle 5, and completing the separation of the head of the detachable shaver and its handle 5, making disassembly and assembly more convenient.

[0044] The above are only preferred embodiments of the present invention and do not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A detachable shaver head, characterized in that: include: Gear box, ball head, cutter head assembly, including: The gearbox includes a gearbox housing, a gearbox cover, and an internal transmission assembly. The gearbox housing is provided with a cavity. A mounting hole is provided at the bottom of the gearbox housing, and a plurality of slots are provided on the inner wall of the bottom of the gearbox housing and around the mounting hole. The internal transmission assembly is disposed in the gearbox housing. The gearbox cover is disposed on the cavity of the gearbox housing and covers the internal transmission assembly. The ball head is arranged in a columnar shape, and is hollow. A plurality of claws corresponding to the slots are arranged at the edge of the end of the ball head, and the end surface of the end of the ball head provided with the claws and the surface of the claws together form a spherical surface. At the same time, a clamping edge is provided on the outer wall of the end of the ball head provided with the claws, and a gap is provided between the clamping edge and the claws. A recess is provided on the outer wall of the other end of the ball head, and the spherical end of the ball head extends into the gear box housing, and the claws are clamped in the slots, and the clamping edge is located outside the gear box housing; The cutter head assembly is arranged on the gear box cover and is connected to the internal transmission assembly in the gear box; The internal transmission assembly includes a ball head fixing frame, which is arranged in the cavity of the gear box housing, and the bottom surface of the ball head fixing frame is provided with a spherical recess corresponding to the spherical surface on the ball head. The ball head fixing frame presses the end of the ball head extending into the gear box housing, and the spherical surface abuts against the spherical recess to achieve universal rotation.

2. The detachable shaver head according to claim 1, characterized in that: The ball head and the clamping claw are arranged in a "A" shape, and the clamping claw is inclined toward one side of the clamping edge.

3. The detachable shaver head according to claim 1, characterized in that: The internal transmission assembly also includes a planetary gear assembly and a center gear assembly. Several vertex angles are provided at the edge of the ball head fixing frame, and a planetary gear assembly is installed on each of the vertex angles. At the same time, a through hole corresponding to the mounting hole is provided in the center of the ball head fixing frame. The center gear assembly is arranged at the center of the ball head fixing frame and meshes with each of the planetary gear assemblies, and one end of the center gear assembly extends out of the gear box housing from the through hole and the mounting hole.

4. The detachable shaver head according to claim 3, characterized in that: One end of the central gear assembly extending out of the gear box housing is inserted into the hollow of the ball head.

5. The detachable shaver head according to claim 3, characterized in that: The output shaft of each planetary gear assembly extends out of the gear box cover.

6. The detachable shaver head according to claim 3, characterized in that: It also includes a ball head elastic member, which is arranged in a truncated cone shape, and one end of the ball head elastic member is connected to the bottom of the gear box housing, and the other end of the ball head elastic member is sleeved outside the ball head for resetting after universal rotation.

7. The detachable shaver head according to claim 6, characterized in that: The end of the ball head elastic member facing away from the gear box housing is wrapped around the outside of the clamping edge and is located on a side of the clamping edge facing away from the clamping claw.

8. The detachable shaver head according to claim 6, characterized in that: The ball head elastic member is a bellows structure.

9. A connection structure, characterized in that: A head for connecting a detachable razor according to any one of claims 1 to 8, comprising a U-shaped retaining spring and a sleeve, wherein the sleeve is fixed to the handle, a retaining hole corresponding to the recess is provided on the wall of the sleeve, the U-shaped retaining spring is sleeved outside the sleeve, and the edge of the opening on one side of the U-shaped retaining spring is bent inwardly into a "V" shape to form a first retaining position, and the first retaining position extends into the retaining hole.

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