Shaver head holder and shaver

Abstract

The utility model provides a razor head seat and a razor. The razor head seat comprises: a gear frame, comprising a first spherical surface, the first spherical surface having a first spherical center, and the first spherical surface is located on the side of the gear frame away from the first spherical center; a fixed frame connected to the gear frame, comprising a second spherical surface, the second spherical surface is located on the side of the fixed frame close to the first spherical center, the second spherical surface is located outside the first spherical surface, and an annular space is formed between the second spherical surface and the first spherical surface; a floating seat, comprising a third spherical surface and a fourth spherical surface centered on the first spherical center, the third spherical surface is arranged toward the first spherical surface, and forms a sliding fit with the first spherical surface, the fourth spherical surface is arranged toward the second spherical surface, and forms a sliding fit with the second spherical surface, the floating seat is partially located in the annular space, and can rotate relative to the gear frame and the fixed frame. The razor head seat of the utility model can ensure that the pressure of the blade head on the face is uniform during use, thereby improving the user's comfort.

Description

Technical Field

[0001] The utility model relates to the technical field of personal care products, in particular to a razor head seat and a razor. Background Art

[0002] An electric shaver is a device that uses an electric motor to drive a cutter to cut hair on human skin. The electric shaver has a cutter head, which usually has one or more cutting blades, and the cutter head can be driven to rotate by the electric motor to cut hair.

[0003] In order to make shaving more comfortable and efficient, the cutting part of the shaver that contacts the user's skin should be able to float or rotate relative to the grip part of the shaver to fit the user's skin surface. At the same time, it should also be considered that during the floating or rotating process, the movement of the motor located in the grip part can be stably and effectively transmitted to the cutting part.

[0004] The blade heads of traditional electric shavers are mostly fixed to the blade head frame and can only float up and down in a small range. The floating angle is relatively limited, and after a period of use, the spring loses its elasticity and cannot float normally. The cutting part cannot flexibly change the angle with the changes in the face, so the beard in some parts of the face cannot be effectively cut. In addition, the uneven pressure of the blade head on the face during use will cause discomfort to the skin. Utility Model Content

[0005] The main purpose of the utility model is to provide a razor head holder and a razor, which can ensure that the pressure of the razor head on the face is uniform during use, thereby improving the user's comfort.

[0006] In order to achieve the above object, according to one aspect of the utility model, a razor head holder is provided, comprising:

[0007] The gear rack comprises a first spherical surface, the first spherical surface has a first spherical center, and the first spherical surface is located on a side of the gear rack away from the first spherical center;

[0008] A fixing frame connected to the gear frame, the fixing frame includes a second spherical surface centered on the first spherical center, the second spherical surface is located on a side of the fixing frame close to the first spherical center, the second spherical surface is located outside the first spherical surface, and an annular space centered on the first spherical center is formed between the second spherical surface and the first spherical surface;

[0009] The floating seat includes a third spherical surface and a fourth spherical surface centered on the first spherical center. The third spherical surface is arranged toward the first spherical surface and forms a sliding fit with the first spherical surface. The fourth spherical surface is arranged toward the second spherical surface and forms a sliding fit with the second spherical surface. The floating seat is partially located in the annular space and can rotate relative to the gear frame and the fixed frame.

[0010] Furthermore, a decorative ring is provided between the gear rack and the floating seat, the decorative ring comprising an elastic portion, and the decorative ring forms a return force between the gear rack and the floating seat through the elastic portion.

[0011] Furthermore, the decorative ring is a soft rubber structure, and the decorative ring cover is arranged on the periphery of the matching structure of the gear frame, the fixing frame and the floating seat. One end of the decorative ring is connected to the gear frame through the fixing frame, and the other end of the decorative ring is connected to the floating seat.

[0012] Furthermore, the fixing frame includes a fixing ring and a rotating matching portion located on the inner circumference of the fixing ring, the second spherical surface is located on the inner wall surface of the rotating matching portion, the fixing ring is provided with a mounting protrusion and a limiting groove, the first end of the decorative ring is provided with a connecting ring, the connecting ring is provided with a limiting hole, the mounting protrusion is installed in the limiting hole, and the gear frame is provided with a limiting hook, which is engaged in the limiting groove.

[0013] Furthermore, a recessed space recessed toward the top is provided at the bottom of the gear rack, a radial limiting groove is formed between the limiting hook and the side wall of the recessed space, the connecting ring and part of the fixing ring are located in the radial limiting groove, the elastic part is connected to the connecting ring and wrapped around the outer circumference of the fixing ring; and / or the circumferential length of the limiting groove is greater than the circumferential length of the limiting hook.

[0014] Furthermore, the decorative ring further comprises a connecting ring and a connecting flange, the elastic portion comprises an elastic hem, the connecting ring is connected to a first end of the elastic hem, the connecting flange is connected to a second end of the elastic hem, an annular groove is arranged on the outer periphery of the floating seat, and the connecting flange is inserted into the annular groove.

[0015] The connecting flange forms a rotational fit with the annular groove; or, the inner ring of the connecting flange is provided with a stop groove, a stop protrusion is provided in the annular groove, and the stop groove and the stop protrusion form a stop fit.

[0016] Furthermore, a rotation limit groove is provided on the gear frame, and a limit protrusion extending toward the gear frame is provided on the floating seat, the limit protrusion is installed in the rotation limit groove, and the outer peripheral surface of the limit protrusion is located on the extension surface of the fourth spherical surface and is coplanar with the fourth spherical surface; and / or, at least one bone position is provided on the third spherical surface, and at least one circumferential limit groove is provided on the first spherical surface, the circumferential width of the bone position is smaller than the circumferential width of the circumferential limit groove, and the bone position is located in the circumferential limit groove.

[0017] Furthermore, the circumferential rotation angle of the gear carrier relative to the floating seat is less than or equal to 15°.

[0018] Furthermore, the razor head holder also includes a main driving shaft, a driving gear and a cutter head gear, the driving gear meshes with the cutter head gear for transmission, the main driving shaft is drivingly connected to the driving gear, the driving end of the main driving shaft is circumferentially provided with a lateral protrusion, the lateral protrusion has a sliding arc surface, the driving gear includes a mounting convex ring, a floating limit groove is provided on the side wall of the mounting convex ring, the bottom of the floating limit groove is arc-shaped, the lateral protrusion is arranged in the floating limit groove, a spring is arranged between the main driving shaft and the driving gear, the first end of the spring abuts the main driving shaft, and the second end of the spring abuts the driving gear; or, the razor head holder also includes a main driving shaft, a mounting frame, A transmission shaft, a driving gear, a cover plate and a cutter head gear, the driving gear and the cutter head gear are meshed for transmission, the cover plate is installed on the gear frame, the first end of the transmission shaft is rotatably set on the cover plate, the transmission shaft and the driving gear form a circumferential transmission fit, the second end of the transmission shaft is fixedly connected to the mounting frame, the driving end of the main driving shaft is circumferentially provided with lateral protrusions, the lateral protrusions have a sliding arc surface, a floating limit groove is provided on the side wall of the mounting frame, the bottom of the floating limit groove is arc-shaped, the lateral protrusion is provided in the floating limit groove, a spring is provided between the main driving shaft and the mounting frame, the first end of the spring abuts the main driving shaft, and the second end of the spring abuts the mounting frame.

[0019] According to another aspect of the utility model, a razor is provided, comprising a handle, a razor head seat and a head assembly arranged on the razor head seat, and the razor head seat is the above-mentioned razor head seat.

[0020] Applying the technical solution of the utility model, the razor head seat includes: a gear frame, the gear frame includes a first spherical surface, the first spherical surface has a first spherical center, and the first spherical surface is located on the side of the gear frame away from the first spherical center; a fixed frame, connected to the gear frame, the fixed frame includes a second spherical surface centered on the first spherical center, the second spherical surface is located on the side of the fixed frame close to the first spherical center, the second spherical surface is located on the outside of the first spherical surface, and an annular space centered on the first spherical center is formed between the second spherical surface and the first spherical surface; a floating seat, including a third spherical surface and a fourth spherical surface centered on the first spherical center, the third spherical surface is arranged toward the first spherical surface and forms a sliding fit with the first spherical surface, the fourth spherical surface is arranged toward the second spherical surface and forms a sliding fit with the second spherical surface, the floating seat is partially located in the annular space, and can rotate relative to the gear frame and the fixed frame. The razor head seat uses the first spherical surface of the gear frame and the third spherical surface of the floating seat to form a rotational sliding fit, and uses the second spherical surface of the fixed frame and the fourth spherical surface of the floating seat to form a rotational sliding fit, so that the cutter head can realize axial rotation relative to the floating seat through the gear frame, and can use the cooperation of the floating seat, the gear frame and the fixed frame to limit the up and down floating of the cutter head relative to the floating seat, providing a change in the circumferential angle for the shaving surface, so that the floating range of the cutter head is larger, the floating angle is larger, and the angle can be flexibly changed with the change of the face, and the beard of different parts of the face can be effectively cut, the cutting efficiency is high, and the cleaning effect is good. Since the floating of the cutter head is realized by the circumferential rotation of the gear frame and the fixed frame relative to the floating seat, there is no need to set a spring, which can avoid the problem of normal floating caused by spring failure, and improve the reliability and stability of the floating of the cutter head. At the same time, since the floating of the cutter head in this solution is realized by the floating of the gear frame relative to the floating seat, the spring is omitted, so there will be no problem of uneven pressure of the cutter head on the face due to uneven distribution of spring elastic force, and the uniformity of the pressure of the cutter head on the face is improved, so that the human skin is more comfortable during shaving, and the user experience is effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0022] Figure 1 A schematic diagram showing the exploded structure of a razor head according to a first embodiment of the utility model is shown;

[0023] Figure 2 A schematic diagram of a three-dimensional cross-sectional structure of a razor head holder according to a first embodiment of the utility model is shown;

[0024] Figure 3 It shows a schematic cross-sectional structure diagram of the razor head holder of the first embodiment of the utility model after the decorative ring is removed;

[0025] Figure 4 An axonometric view of a floating seat of a razor head seat according to a first embodiment of the utility model is shown;

[0026] Figure 5 An axonometric view of a gear rack of a razor head holder of a first embodiment of the utility model is shown;

[0027] Figure 6 A schematic cross-sectional view of the gear frame of the razor head seat of the first embodiment of the utility model is shown;

[0028] Figure 7 The exploded structural diagram of the razor head holder of the first embodiment of the utility model is shown;

[0029] Figure 8 A schematic cross-sectional view of a razor head holder according to a first embodiment of the utility model is shown;

[0030] Fig. 9 A schematic diagram showing the exploded structure of a razor head according to a second embodiment of the utility model is shown;

[0031] Fig.10 A schematic diagram of a three-dimensional cross-sectional structure of a razor head holder according to a second embodiment of the utility model is shown;

[0032] Fig.11 It shows a cross-sectional structural schematic diagram of a razor head holder of the second embodiment of the utility model after removing the decorative ring;

[0033] Fig.12 A first axonometric view of a floating seat of a razor head seat according to a second embodiment of the utility model is shown;

[0034] Fig.13 A second axonometric view of the floating seat of the razor head seat of the second embodiment of the utility model is shown;

[0035] Fig.14 A first axonometric view of a gear frame of a razor head holder of a second embodiment of the utility model is shown;

[0036] Fig.15 A second axonometric view of the gear rack of the razor head holder of the second embodiment of the utility model is shown;

[0037] Fig.16 A first axonometric view of a decorative ring of a razor head holder according to a second embodiment of the utility model is shown;

[0038] Fig.17 A second axonometric view of the decorative ring of the razor head holder of the second embodiment of the utility model is shown;

[0039] Fig.18 An exploded structural diagram showing a razor head holder according to a second embodiment of the present invention; and

[0040] Fig.19 A schematic cross-sectional structure diagram of a razor head holder according to a second embodiment of the utility model is shown.

[0041] The above drawings include the following reference numerals:

[0042] 1. Cutter head assembly; 2. Blade drive shaft; 3. Cover plate; 4. Magnet; 5. Cutter head gear; 6. Drive gear; 7. Gear rack; 8. Floating seat; 9. Fixed rack; 10. Decorative ring; 11. Transmission shaft; 12. Mounting rack; 13. Spring; 14. Main drive shaft; 15. First spherical surface; 16. Second spherical surface; 17. Third spherical surface; 18. Fourth spherical surface; 19. Fixed ring; 20. Rotational mating part; 21. Mounting protrusion; 22. Limiting groove; 23. Connecting ring; 24. Elastic part; 25. Connecting flange; 26. Limiting hole; 27. Limiting hook; 28. Recessed space; 29. ​​Annular groove; 30. Stop groove; 31. Stop protrusion; 32. Rotational limiting groove; 33. Limiting protrusion; 34. Bone position; 35. Circumferential limiting groove; 36. Lateral protrusion; 37. Floating limiting groove; 38. Mounting protrusion. DETAILED DESCRIPTION

[0043] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0044] See also Figures 1 to 19 As shown, the utility model provides a razor head seat, comprising: a gear frame 7, the gear frame 7 comprises a first spherical surface 15, the first spherical surface 15 has a first spherical center, and the first spherical surface 15 is located on the side of the gear frame 7 away from the first spherical center; a fixed frame 9, connected to the gear frame 7, the fixed frame 9 comprises a second spherical surface 16 centered on the first spherical center, the second spherical surface 16 is located on the side of the fixed frame 9 close to the first spherical center, the second spherical surface 16 is located on the outside of the first spherical surface 15, and an annular space centered on the first spherical center is formed between the second spherical surface 15 and the first spherical surface 15; a floating seat 8, comprising a third spherical surface 17 and a fourth spherical surface 18 centered on the first spherical center, the third spherical surface 17 is arranged toward the first spherical surface 15, and forms a sliding fit with the first spherical surface 15, the fourth spherical surface 18 is arranged toward the second spherical surface 16, and forms a sliding fit with the second spherical surface 16, the floating seat 8 is partially located in the annular space, and can rotate relative to the gear frame 7 and the fixed frame 9.

[0045] The razor head seat uses the first spherical surface 15 of the gear frame 7 and the third spherical surface 17 of the floating seat 8 to form a rotational sliding fit, and uses the second spherical surface 16 of the fixed frame 9 and the fourth spherical surface 18 of the floating seat 8 to form a rotational sliding fit, so that the cutter head assembly 1 can realize axial rotation relative to the floating seat 8 through the gear frame 7, and can limit the up and down floating of the cutter head assembly 1 relative to the floating seat 8 by using the cooperation of the floating seat 8, the gear frame 7 and the fixed frame 9, so as to provide a change in the circumferential angle for the shaving surface, so that the floating range of the cutter head assembly 1 is larger, the floating angle is larger, and the angle can be flexibly changed with the change of the face, so as to effectively cut the beards in different parts of the face, and the cutting efficiency is high The cleaning effect is good. Since the floating of the cutter head assembly 1 is achieved by the circumferential rotation of the gear frame 7 and the fixed frame 9 relative to the floating seat 8, there is no need to set a spring, which can avoid the problem of abnormal floating due to spring failure, and improve the reliability and stability of the cutter head floating. At the same time, since the floating of the cutter head assembly 1 in this solution is achieved by the floating of the gear frame 7 relative to the floating seat 8, the spring is omitted, so the problem of uneven pressure of the cutter head assembly 1 on the face due to uneven distribution of spring elastic force will not occur, which improves the uniformity of the pressure of the cutter head assembly 1 on the face, makes the human skin more comfortable during shaving, and effectively improves the user experience.

[0046] In one embodiment, a decorative ring 10 is disposed between the gear rack 7 and the floating seat 8 . The decorative ring 10 includes an elastic portion 24 . The decorative ring 10 generates a return force between the gear rack 7 and the floating seat 8 through the elastic portion 24 .

[0047] In this embodiment, the gear frame 7 and the floating seat 8 can rotate relative to each other. After rotating to a suitable position and completing shaving, the cutter head assembly 1 needs to be returned to the correct position to facilitate subsequent operation and use. The return of the cutter head assembly 1 can be achieved manually or by adding a return mechanism. Generally, the return mechanism adopts an elastic structure, and the elastic force of the elastic structure is used to achieve return, which is not only simple to operate, but also convenient to use.

[0048] In this embodiment, a decorative ring 10 is used as a return mechanism. The decorative ring 10 includes an elastic portion 24. The decorative ring 10 provides a return elastic force for the gear frame 7 through the elastic portion 24, so that the gear frame 7 and the cutter head assembly 1 located on the gear frame 7 can be reset to the center in a natural state under the elastic action of the elastic portion 24 of the decorative ring 10, which not only ensures the structural stability of the shaver during long-term use, but also facilitates the user to quickly align it when using it next time.

[0049] In addition, the decorative ring 10 can also cover the combination position of the gear frame 7, the floating seat 8 and the fixed frame 9, so that the irregular structure of the combination position will not be exposed, thereby improving the overall appearance and consistency of the razor head seat.

[0050] In one embodiment, the decorative ring 10 is a soft rubber structure, and the decorative ring 10 is covered on the periphery of the matching structure of the gear frame 7, the fixed frame 9 and the floating seat 8. One end of the decorative ring 10 is connected to the gear frame 7 through the fixed frame 9, and the other end of the decorative ring 10 is connected to the floating seat 8.

[0051] In this embodiment, the decorative ring 10 adopts a soft rubber structure, and the elasticity of the soft rubber structure can be used to provide an automatic self-correcting force. At the same time, the soft rubber structure has better flexibility, which can reduce the sense of blockage caused by the rotation of the blade assembly when the user uses the shaver, improve the smoothness and feel of the user when operating the shaver, and improve the user's experience.

[0052] In one embodiment, the fixing frame 9 includes a fixing ring 19 and a rotating matching portion 20 located on the inner circumference of the fixing ring 19, the second spherical surface 16 is located on the inner wall surface of the rotating matching portion 20, the fixing ring 19 is provided with a mounting protrusion 21 and a limiting groove 22, the first end of the decorative ring 10 is provided with a connecting ring 23, the connecting ring 23 is provided with a limiting hole 26, the mounting protrusion 21 is installed in the limiting hole 26, and the gear frame 7 is provided with a limiting hook 27, which is inserted into the limiting groove 22.

[0053] In this embodiment, the fixing frame 9 realizes circumferential limitation of the fixing ring 19 and the connecting ring 23 by plugging and fitting the mounting protrusion 21 on the fixing ring 19 with the limiting hole 26 on the connecting ring 23 of the decorative ring 10. At the same time, the fixing ring 19 can be used to press the connecting ring 23 onto the gear frame 7 to achieve installation and fixation of the connecting ring 23 of the decorative ring 10. The plug-in and pressing and fixing method can effectively avoid the problem of unstable fixing structure caused by the flexibility of the decorative ring 10 and easy escape from the matching structure, thereby improving the stability and reliability of the installation structure of the decorative ring 10.

[0054] The limiting groove 22 on the fixing ring 19 is engaged with the limiting hook 27 on the gear frame 7. After the limiting hook 27 passes through the limiting groove 22, the hook body is hooked on the bottom of the fixing ring 19. At the same time, the gear frame 7 is pressed on the fixing ring 19 from the top of the fixing ring 19, and the upper and lower parts act simultaneously to limit the axial position of the fixing ring 19 on the gear frame 7, thereby realizing the assembly of the fixing ring 19 on the gear frame 7. Since the decorative ring 10 is installed and fixed on the fixing ring 19, the gear frame 7 also realizes the installation and fixation of the decorative ring 10 at the same time.

[0055] In one embodiment, a recessed space 28 recessed toward the top is provided at the bottom of the gear rack 7, a radial limiting groove is formed between the limiting hook 27 and the side wall of the recessed space 28, the connecting ring 23 and part of the fixing ring 19 are located in the radial limiting groove, and the elastic part 24 is connected to the connecting ring 23 and wrapped around the outer periphery of the fixing ring 19.

[0056] In this embodiment, by setting a recessed space 28 with a recessed top at the bottom of the gear frame 7, the connecting ring 23 of the decorative ring 10 and the fixing ring 19 of the fixing frame 9 can be accommodated in the recessed space 28, so that the recessed space 28 can be used to form an installation space for the connecting ring 23 and the fixing ring 19, and the inner wall structure of the recessed space 28 can be used to achieve the limited matching of the connecting ring 23 and the fixing ring 19, so as to facilitate the installation and fixation of the connecting ring 23 and the fixing ring 19. In addition, the side wall of the recessed space 28 can be used to shield the fixing ring 19 and the connecting ring 23, so that the structure here will not be exposed to the outside, and a good appearance can be formed. The elastic part 24 of the decorative ring 10 is an annular structure, and is shielded on the outside of the fixing frame 9, which can shield the matching position of the gear frame 7, the floating seat 8 and the fixing frame 9, which can play a role in returning to the original position and can also play a role in appearance decoration.

[0057] In one embodiment, the circumferential length of the limiting groove 22 is greater than the circumferential length of the limiting hook 27 .

[0058] In this embodiment, the axial length of the limiting groove 22 is greater than the circumferential length of the limiting hook 27, so that the limiting hook 27 can rotate at a certain angle relative to the limiting groove 22 while forming a snap fit with the limiting groove 22, and can also facilitate the installation of the limiting hook 27 in the limiting groove 22.

[0059] In one embodiment, the axial length of the limiting groove 22 is equal to the circumferential length of the limiting hook 27, so that the limiting hook 27 not only forms an axial limit on the fixing ring 19, but also forms a circumferential limit on the fixing ring 19. The fixing ring 19 and the connecting ring 23 can be stably fixed on the gear frame 7 at the same time, ensuring the stability and reliability of the annular space formed by the gear frame 7 and the fixing frame 9.

[0060] In one embodiment, the decorative ring 10 also includes a connecting ring 23 and a connecting flange 25, the elastic portion 24 includes an elastic hem, the connecting ring 23 is connected to the first end of the elastic hem, the connecting flange 25 is connected to the second end of the elastic hem, an annular groove 29 is provided on the outer periphery of the floating seat 8, and the connecting flange 25 is inserted into the annular groove 29.

[0061] In this embodiment, the decorative ring 10 is fixedly connected to the fixing frame 9 through the connecting ring 23, and is connected to the annular groove 29 of the floating seat 8 through the connecting flange 25, so that the decorative ring 10 can completely cover the area between the annular groove 29 of the floating seat 8 and the edge structure of the recessed space 28 of the gear frame 7, so that the razor head seat presents an appearance structure in which the gear frame 7, the elastic frill and the floating seat 8 are connected in sequence, the appearance structure has good integrity and consistency, the surface lines of the overall structure are smooth, and the appearance performance is excellent.

[0062] In one embodiment, the connecting flange 25 forms a rotational fit with the annular groove 29 .

[0063] In this embodiment, the connecting flange 25 can be axially limited by the annular groove 29 to prevent the connecting flange 25 from being disengaged from the annular groove 29, thereby realizing the fixed connection between the decorative ring 10 and the floating seat 8. Meanwhile, the interior of the annular groove 29 is smooth, and the connecting flange 25 can rotate circumferentially relative to the annular groove 29. Therefore, in this embodiment, the decorative ring 10 does not limit the circumferential rotation of the gear frame 7 relative to the axis of the floating seat 8. Through the circumferential connection between the decorative ring 10 and the gear frame 7 and the circumferential connection between the decorative ring 10 and the floating seat 8, a return force can be provided for the rotational cooperation between the gear frame 7 and the spherical surface of the floating seat 8 and the rotational cooperation between the fixed frame 9 and the floating seat 8, so that the rotational cooperation between the gear frame 7 and the spherical surface of the floating seat 8 and the rotational cooperation between the fixed frame 9 and the floating seat 8 in the natural state are both in the reset center position, thereby realizing the automatic return of the gear frame 7 and the cutter head assembly 1 arranged on the gear frame 7.

[0064] In one embodiment, a stop groove 30 is provided on the inner ring of the connecting flange 25 , and a stop protrusion 31 is provided in the annular groove 29 , and the stop groove 30 and the stop protrusion 31 form a stop fit.

[0065] In this embodiment, the interior of the annular groove 29 is not circumferentially through, but is provided with a stop protrusion 31, and the inner ring of the connecting flange 25 is provided with a stop groove 30. When the connecting flange 25 is clamped in the annular groove 29, the stop groove 30 of the connecting flange 25 is simultaneously clamped with the stop protrusion 31 in the annular groove 29, thereby forming an axial limit between the decorative ring 10 and the floating seat 8, and simultaneously limiting the circumferential rotation between the decorative ring 10 and the floating seat 8. When the gear rack 7 rotates around the axis relative to the floating seat 8, since the connecting flange 25 of the decorative ring 10 cannot rotate circumferentially relative to the stop groove 30 of the floating seat 8, relative rotation will occur between the connecting flange 25 of the decorative ring 10 and the connecting ring 23. When deflected to a certain angle, the decorative ring 10 is stretched to the maximum position and cannot be stretched further, which will prevent the gear rack 7 from continuing to rotate around the axis relative to the floating seat 8, thereby limiting the rotation of the gear rack 7 relative to the floating seat 8 around the axis, limiting the maximum rotation angle of the gear rack 7 relative to the floating seat 8 around the axis.

[0066] In addition, through the circumferential connection between the decorative ring 10 and the gear rack 7 and the circumferential connection between the decorative ring 10 and the floating seat 8, the decorative ring 10 can also provide a return force for the rotational cooperation between the gear rack 7 and the spherical surface of the floating seat 8 and the rotational cooperation between the fixed frame 9 and the spherical surface of the floating seat 8, so that in the natural state, the rotational cooperation between the spherical surface of the gear rack 7 and the floating seat 8 and the rotational cooperation between the fixed frame 9 and the floating seat 8 are both in the reset center position, realizing the automatic return of the gear rack 7 and the cutter head assembly 1 arranged on the gear rack 7.

[0067] In one embodiment, a rotation limit groove 32 is provided on the gear rack 7, and a limit protrusion 33 extending toward the gear rack 7 is provided on the floating seat 8. The limit protrusion 33 is installed in the rotation limit groove 32, and the outer peripheral surface of the limit protrusion 33 is located on the extension surface of the fourth spherical surface 18 and is coplanar with the fourth spherical surface 18.

[0068] In this embodiment, the limiting protrusion 33 of the floating seat 8 extends into the rotation limiting groove 32 on the gear frame 7 and forms a rotational fit with the rotation limiting groove 32. The rotation limiting groove 32 can be used to limit the rotation angle of the gear frame 7 relative to the floating seat 8, so that the gear frame 7 rotates within a set range and has a better rotation range, which can better meet the needs of users. At the same time, a suitable rotation range can also reduce design complexity and processing costs.

[0069] In one embodiment, at least one bone position 34 is provided on the third spherical surface 17 , and at least one circumferential limiting groove 35 is provided on the first spherical surface 15 . The circumferential width of the bone position 34 is smaller than the circumferential width of the circumferential limiting groove 35 , and the bone position 34 is located in the circumferential limiting groove 35 .

[0070] In this embodiment, since the bone position 34 is an arc-shaped protrusion disposed on the surface of the third spherical surface 17, the arc surface of the arc-shaped protrusion is concentric with the first spherical surface 15, and the bottom surface of the circumferential limiting groove 35 is also an arc surface, and is concentric with the first spherical surface 15, the rotation of the bone position 34 relative to the circumferential limiting groove 35 is consistent with the rotation of the first spherical surface 15 relative to the third spherical surface 17, and no jamming occurs, and it can also play an auxiliary guiding role. Since the circumferential width of the bone position 34 is smaller than the circumferential width of the circumferential limiting groove 35, the rotational cooperation of the bone position 34 relative to the circumferential limiting groove 35 can be used to achieve the rotation angle restriction of the gear frame 7 relative to the floating seat 8.

[0071] In one embodiment, the rotation angle of the gear carrier 7 relative to the floating seat 8 is less than or equal to 45°.

[0072] In one embodiment, the rotation angle of the gear carrier 7 relative to the floating seat 8 is less than or equal to 30°.

[0073] In one embodiment, the rotation angle of the gear carrier 7 relative to the floating seat 8 is less than or equal to 15°.

[0074] When the rotation angle of the gear frame 7 relative to the floating seat 8 is mainly achieved by the rotation cooperation of the bone position 34 relative to the circumferential limit groove 35, the rotation cooperation between the limit protrusion 33 of the floating seat 8 and the rotation limit groove 32 on the gear frame 7, as well as the rotation limitation of the gear frame 7 relative to the floating seat 8 around the axial direction by the decorative ring 10 all play an auxiliary role in limiting the rotation angle.

[0075] In addition, the decorative ring 10 is limited by soft rubber, and the limiting protrusion 33 and the rotation limiting groove 32 are limited by hard rubber. The limiting protrusion 33 and the rotation limiting groove 32 are the limiting limit positions of the decorative ring 10. When the soft rubber of the decorative ring 10 is limited to the limit position, the hard rubber is limited to prevent the gear rack 7 from rotating 360° when the gear rack 7 is rotated forcibly.

[0076] Through the cooperation between the floating seat 8 and the gear frame 7, the entire cutter head can rotate circumferentially relative to the floating seat 8, that is, the shaving surface can rotate relative to the handle. At the same time, the bone position 34 of the floating seat 8 and the circumferential limiting groove 35 of the gear frame 7 cooperate to limit the rotation angle to be preferably less than 45°, further less than 30°, and further less than 15°. The width of the circumferential limiting groove 35 is greater than the width of the bone position 34. The bone position 34 can rotate circumferentially in the circumferential limiting groove 35 to avoid the rotation angle being too large to affect the shaving efficiency.

[0077] In this embodiment, the first spherical surface 15 of the gear frame 7 and the third spherical surface 17 of the circular arc concave on the inner circle of the floating seat 8 are tangentially matched to form a circle of support parts, and the first spherical surface 15 and the third spherical surface 17 share the same spherical center. The decorative ring 10 and the floating seat 8 are fixed to the gear frame 7 through the fixed frame 9, and the limit hook 27 of the gear frame 7 buckles the fixed frame 9. The second spherical surface 16 of the inner wall of the fixed frame 9 and the fourth spherical surface 18 of the circular arc protrusion on the outer circle of the floating seat 8 are tangentially matched to form a circle of support parts, that is, the upper end of the floating seat 8 abuts against the first spherical surface 15 of the gear frame 7 through the third spherical surface 17, and the circumference of the floating seat 8 abuts against the second spherical surface 16 of the inner wall of the fixed frame 9 through the fourth spherical surface 18, thereby connecting the cutter head assembly 1 with the floating seat 8, and the other end of the floating seat 8 is connected to the handle, thereby connecting the cutter head with the handle. The cutter head here includes a razor cutter head seat and a cutter head assembly 1 arranged on the razor cutter head seat.

[0078] In one embodiment, the gear rack 7 is integrally formed with the cutter head housing, which can simplify the overall structure of the cutter head.

[0079] In one embodiment, the razor head seat also includes a blade drive shaft 2, a main drive shaft 14, a drive gear 6 and a cutter head gear 5. The drive gear 6 is meshed with the cutter head gear 5 for transmission. The blade drive shaft 2 is respectively connected to the blade and the main drive shaft 14 for driving, transmitting the driving force of the main drive shaft 14 to drive the blade to move for shaving. The main drive shaft 14 is connected to the drive gear 6 for driving. The driving end of the main drive shaft 14 is circumferentially provided with a lateral protrusion 36, and the lateral protrusion 36 has a sliding arc surface. The drive gear 6 includes a mounting convex ring 38, and a floating limit groove 37 is provided on the side wall of the mounting convex ring 38. The bottom of the floating limit groove 37 is arc-shaped, and the lateral protrusion 36 is arranged in the floating limit groove 37. A spring 13 is provided between the main drive shaft 14 and the drive gear 6, and the first end of the spring 13 abuts the main drive shaft 14, and the second end of the spring 13 abuts the drive gear 6.

[0080] In one embodiment, the razor head seat further includes a blade drive shaft 2, a main drive shaft 14, a mounting frame 12, a transmission shaft 11, a drive gear 6, a cover plate 3 and a cutter head gear 5. The drive gear 6 is meshed with the cutter head gear 5 for transmission. The blade drive shaft 2 is respectively connected to the blade and the main drive shaft 14 for driving, transmitting the driving force of the main drive shaft 14 to drive the blade to move and perform a shaving operation. The cover plate 3 is mounted on the gear frame 7. The first end of the transmission shaft 11 is rotatably disposed on the cover plate 3. The transmission shaft 11 is rotatably disposed on the drive gear 6. The second end of the transmission shaft 11 is fixedly connected to the mounting frame 12 for circumferential transmission cooperation. The driving end of the main drive shaft 14 is circumferentially provided with a lateral protrusion 36. The lateral protrusion 36 has a sliding arc surface. A floating limit groove 37 is provided on the side wall of the mounting frame 12. The bottom of the floating limit groove 37 is arc-shaped. The lateral protrusion 36 is arranged in the floating limit groove 37. A spring 13 is provided between the main drive shaft 14 and the mounting frame 12. The first end of the spring 13 abuts against the main drive shaft 14, and the second end of the spring 13 abuts against the mounting frame 12.

[0081] In one embodiment, the razor head holder further comprises a magnet 4 , which is installed between the gear frame 7 and the cover plate 3 to achieve adsorption and fixation of the razor head holder to the head assembly 1 .

[0082] According to an embodiment of the utility model, the razor comprises a handle, a razor head seat and a head assembly 1 arranged on the razor head seat, and the razor head seat is the above-mentioned razor head seat.

[0083] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0084] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0085] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A razor head holder, characterized in that: include: A gear rack (7), the gear rack (7) comprising a first spherical surface (15), the first spherical surface (15) having a first spherical center, and the first spherical surface (15) being located on a side of the gear rack (7) away from the first spherical center; a fixed frame (9) connected to the gear frame (7), the fixed frame (9) comprising a second spherical surface (16) centered at the first spherical center, the second spherical surface (16) being located on a side of the fixed frame (9) close to the first spherical center, the second spherical surface (16) being located outside the first spherical surface (15), and forming an annular space centered at the first spherical center between the second spherical surface (16) and the first spherical surface (15); The floating seat (8) comprises a third spherical surface (17) and a fourth spherical surface (18) centered on the first spherical center. The third spherical surface (17) is arranged toward the first spherical surface (15) and forms a sliding fit with the first spherical surface (15). The fourth spherical surface (18) is arranged toward the second spherical surface (16) and forms a sliding fit with the second spherical surface (16). The floating seat (8) is partially located in the annular space and can rotate relative to the gear frame (7) and the fixed frame (9).

2. The razor head holder according to claim 1, characterized in that: A decorative ring (10) is arranged between the gear rack (7) and the floating seat (8), and the decorative ring (10) comprises an elastic portion (24). The decorative ring (10) forms a return force between the gear rack (7) and the floating seat (8) through the elastic portion (24).

3. The razor head holder according to claim 2, characterized in that: The decorative ring (10) is a soft rubber structure, and the decorative ring (10) is covered on the outer periphery of the matching structure of the gear frame (7), the fixing frame (9) and the floating seat (8). One end of the decorative ring (10) is connected to the gear frame (7) through the fixing frame (9), and the other end of the decorative ring (10) is connected to the floating seat (8).

4. The razor head holder according to claim 3, characterized in that: The fixing frame (9) comprises a fixing ring (19) and a rotating matching portion (20) located on the inner circumference of the fixing ring (19); the second spherical surface (16) is located on the inner wall surface of the rotating matching portion (20); the fixing ring (19) is provided with a mounting protrusion (21) and a limiting groove (22); the first end of the decorative ring (10) is provided with a connecting ring (23); the connecting ring (23) is provided with a limiting hole (26); the mounting protrusion (21) is installed in the limiting hole (26); the gear frame (7) is provided with a limiting hook (27); the limiting hook (27) is engaged in the limiting groove (22).

5. The razor head holder according to claim 4, characterized in that: The bottom of the gear rack (7) is provided with a recessed space (28) recessed toward the top, a radial limiting groove is formed between the limiting hook (27) and the side wall of the recessed space (28), the connecting ring (23) and part of the fixing ring (19) are located in the radial limiting groove, the elastic part (24) is connected to the connecting ring (23) and covers the outer periphery of the fixing ring (19); and / or the circumferential length of the limiting groove (22) is greater than the circumferential length of the limiting hook (27).

6. The razor head holder according to claim 3, characterized in that: The decorative ring (10) further comprises a connecting ring (23) and a connecting flange (25), the elastic portion (24) comprises an elastic frill, the connecting ring (23) is connected to the first end of the elastic frill, the connecting flange (25) is connected to the second end of the elastic frill, the outer periphery of the floating seat (8) is provided with an annular groove (29), the connecting flange (25) is inserted into the annular groove (29), and the connecting flange (25) and the annular groove (29) form a rotational fit; or, the inner ring of the connecting flange (25) is provided with a stop groove (30), a stop protrusion (31) is provided in the annular groove (29), and the stop groove (30) and the stop protrusion (31) form a stop fit.

7. The razor head holder according to claim 1, characterized in that: The gear rack (7) is provided with a rotation limit groove (32), and the floating seat (8) is provided with a limit protrusion (33) extending toward the gear rack (7), the limit protrusion (33) is installed in the rotation limit groove (32), and the outer peripheral surface of the limit protrusion (33) is located on the extension surface of the fourth spherical surface (18) and is coplanar with the fourth spherical surface (18); and / or, at least one bone position (34) is provided on the third spherical surface (17), and at least one circumferential limit groove (35) is provided on the first spherical surface (15), the circumferential width of the bone position (34) is smaller than the circumferential width of the circumferential limit groove (35), and the bone position (34) is located in the circumferential limit groove (35).

8. The razor head holder according to claim 1, characterized in that: The circumferential rotation angle of the gear rack (7) relative to the floating seat (8) is less than or equal to 15°.

9. The razor head holder according to claim 1, characterized in that: The razor head seat further comprises a main drive shaft (14), a driving gear (6) and a cutter head gear (5); the driving gear (6) is meshed with the cutter head gear (5) for transmission; the main drive shaft (14) is drivingly connected to the driving gear (6); a driving end of the main drive shaft (14) is circumferentially provided with a lateral protrusion (36); the lateral protrusion (36) has a sliding arc surface; the driving gear (6) comprises a mounting convex ring (38); a floating limit is provided on the side wall of the mounting convex ring (38) The razor head holder further comprises a main drive shaft (14), a mounting frame (12), a transmission shaft (11), a drive gear (6), and a lateral projection (36) disposed in the floating limit groove (37). A spring (13) is disposed between the main drive shaft (14) and the drive gear (6). The first end of the spring (13) abuts against the main drive shaft (14), and the second end of the spring (13) abuts against the drive gear (6). Alternatively, the razor head holder further comprises a main drive shaft (14), a mounting frame (12), a transmission shaft (11), a drive gear (6), and a lateral projection (36) disposed in the floating limit groove (37). The invention relates to a gear (6), a cover plate (3) and a cutter head gear (5), wherein the driving gear (6) is meshed with the cutter head gear (5) for transmission, the cover plate (3) is mounted on the gear frame (7), the first end of the transmission shaft (11) is rotatably arranged on the cover plate (3), the transmission shaft (11) and the driving gear (6) form a circumferential transmission fit, the second end of the transmission shaft (11) is fixedly connected to the mounting frame (12), and the driving end of the main driving shaft (14) is provided with a lateral protrusion along the circumferential direction. (36), the lateral protrusion (36) has a sliding arc surface, a floating limit groove (37) is arranged on the side wall of the mounting frame (12), the bottom of the floating limit groove (37) is arc-shaped, the lateral protrusion (36) is arranged in the floating limit groove (37), a spring (13) is arranged between the main drive shaft (14) and the mounting frame (12), the first end of the spring (13) abuts against the main drive shaft (14), and the second end of the spring (13) abuts against the mounting frame (12).

10. A razor comprising a handle, a razor head holder and a head assembly (1) arranged on the razor head holder, characterized in that: The razor head holder is the razor head holder according to any one of claims 1 to 9.

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