Safe and stable shaver head

Abstract

A safe and stable shaver head comprises an inner ring, an outer ring, a holder and a bottom supporting plate, the outer ring and the inner ring are integrally formed through a plurality of connecting bridges, a shaft hole is formed in the center of the bottom supporting plate, a rotating shaft is rotationally arranged in the shaft hole, the top end of the rotating shaft is sleeved with a cutter head, and a plurality of scrapers are evenly arranged on the periphery of the cutter head in the axial direction. A plurality of grinding devices are evenly arranged on the inner wall of the holder in the axial direction, each grinding device comprises a first round rod, a second round rod, a grinding block and a reset spring, one end of each first round rod is fixedly connected with the inner wall of the holder, and the other end of each first round rod is rotationally connected with one end of the corresponding second round rod; the grinding block is fixedly installed at the end, away from the first round rod, of the second round rod, one end of the reset spring is fixedly welded to the middle of the first round rod, and the other end of the reset spring is fixedly welded to the middle of the second round rod. The grinding device is arranged on the inner wall of the retainer, so that abrasion of the bottoms of the inner ring and the outer ring is avoided, the service life of a tool bit is greatly prolonged, and the scraper is kept sharp.

Description

Technical Field

[0001] The utility model relates to the technical field of razors, in particular to a safe and stable razor head. Background Art

[0002] The blade head of a traditional razor generally consists of a moving blade and a stationary blade. The stationary blade is the razor mesh. Beard hair enters the beard inlet of the razor mesh and is then cut off by the high-speed moving blade. When the blade is not sharp enough, it is easy to cause skin friction or scratches, and in severe cases, it may even cause bleeding and inflammation. Existing self-sharpening blades basically have a grinding structure at the bottom of the blade mesh, which grinds the blade while the razor is working. Although it can be replaced every two years by lengthening the blade and presetting the stroke, the blade mesh with a grinding structure between the blade and the mesh often wears more severely. When the blade mesh is worn too thin, the razor will also not work properly. Therefore, there is an urgent need for a razor head with a long life that can always keep the blade sharp. Utility Model Content

[0003] The purpose of the utility model is to provide a safe and stable razor head to solve the problems existing in the above-mentioned prior art.

[0004] The above technical objectives of the present invention are achieved through the following technical solutions:

[0005] A safe and stable razor head comprises an inner ring, an outer ring, a retaining frame and a bottom support plate. The outer ring and the inner ring are concentrically arranged, the retaining frame is sleeved on the top periphery of the bottom support plate, the outer ring and the inner ring are integrally formed via a plurality of connecting bridges, the outer ring is sleeved on the top periphery of the retaining frame, an axial hole is provided at the center of the bottom support plate, a rotating shaft is rotatably provided in the axial hole, the top end of the rotating shaft is in contact with the bottom end surface of the inner ring, a cutter disc is sleeved on the top end of the cutter disc, and a plurality of scrapers are evenly arranged axially on the periphery of the cutter disc;

[0006] The inner wall of the retaining frame is axially evenly provided with multiple grinding devices, and the grinding devices are used to grind the scraper blade. The grinding device includes a first round rod, a second round rod, a grinding block and a return spring. One end of the first round rod is fixedly connected to the inner wall of the retaining frame, and the other end of the first round rod is rotatably connected to one end of the second round rod. The grinding block is fixedly installed on the end of the second round rod away from the first round rod. One end of the return spring is welded and fixed to the middle position of the first round rod, and the other end of the return spring is welded and fixed to the middle position of the second round rod. The diameter of the grinding block is larger than the diameter of the second round rod.

[0007] By adopting the above technical solution, the static knife composed of the inner ring and the outer ring cooperates with the dynamic knife composed of multiple scrapers on the knife disc to cut the beard. The scraper is made of super-hard ceramic, has a certain antibacterial effect, and is easy to grind. The retaining frame is provided with a grinding device, which forms a connecting rod mechanism through the first round rod, the second round rod and the return spring. In addition to the return spring between the first round rod and the second round rod, another return spring is provided between the first round rod and the inner side wall of the retaining frame for assistance. The blade of the scraper can be repeatedly ground by a grinding block fixedly installed at one end of the second round rod. The grinding block is made of diamond. It replaces the grinding structure originally arranged at the bottom end of the static knife, extends the life of the inner and outer rings, and keeps the blade sharp at all times, greatly improving the safety of the razor head.

[0008] In a further embodiment, a plurality of first cutting teeth arranged at equal intervals are provided on the inner side of the top of the outer ring, a plurality of second cutting teeth arranged at equal intervals are provided on the side wall of the inner ring close to the connecting bridge, and a plurality of whisker holes are provided on the connecting bridge, and the first round rod is located below the outer side of the top of the outer ring.

[0009] By adopting the above technical solution, a beard hole is formed between two adjacent first cutting teeth. When beard enters the beard hole, it will be cut off by the scraper rotating underneath. A beard hole for beard to enter is also formed between two adjacent second cutting teeth. However, on the outside of the top of the outer ring, there are no beard holes or first cutting teeth because a grinding device is provided on the retaining frame underneath.

[0010] In a further embodiment, the scraper rotates clockwise along the axis of the cutter disc, and the scraper includes a blade body, a first blade and a second blade. The bottom of the blade body is fixedly connected to the top of the cutter disc, the first blade is welded to the top left end of the blade body, and the second blade is welded to the top right end of the blade body. A guide slide is fixedly installed between the first blade and the second blade, and the left end of the guide slide is fixedly connected to the right side wall of the first blade, and the right end of the guide slide is fixedly connected to the right side wall of the second blade. The guide slide is used to make the grinding block grind from one side of the blade to the other side.

[0011] By adopting the above technical solution, the top of the scraper is a slope inclined to the lower right, and the inclined slope can cut the beard well. The first blade is used to cooperate with the first cutting teeth on the outer ring, and the second blade is used to cooperate with the second cutting teeth on the inner ring. The double-blade design can effectively improve the shaving efficiency. During the grinding process, the grinding block needs to slide all the way from the right end of the second blade to the leftmost end of the first blade to complete one grinding. The guide rail allows the grinding block to pass through the first blade and the second blade at one time.

[0012] In a further embodiment, a buffer portion is fixedly mounted on a side of the second blade close to the rotating shaft. The buffer portion is made of a flexible material and is used to prevent the blade from being damaged by the grinding block during the grinding process.

[0013] By adopting the above technical solution, the motor speed of the shaver is about 3,000 revolutions per minute, so the grinding device will inevitably collide with the blade. The flexible buffer part can absorb the impact caused by the grinding block, avoiding damage to the blade during the collision and affecting the shaving efficiency.

[0014] In a further embodiment, a plurality of through holes are provided on the top periphery of the bottom support plate, the number of the plurality of through holes corresponds one-to-one to the plurality of grinding devices, and a lead tube is passed through the plurality of through holes, and a locking mechanism is rotatably installed on the bottom of the bottom support plate, and a plurality of traction wires are bonded to the locking mechanism, one end of the traction wire of the locking mechanism is fixedly connected to the outer side wall of the locking mechanism, and the other end of the traction wire is fixedly connected to the middle position of the first round rod through the lead tube, and the locking mechanism is used to control the start and stop of the grinding device.

[0015] By adopting the above technical solution, since the motor speed of the electric shaver is relatively fast, which can reach more than three thousand revolutions per minute, it is relatively difficult to use the grinding device to grind directly during this process. Even if there is a buffer part to protect the blade, the reset spring of the grinding device can hardly support it to complete the reset. Therefore, it is necessary to set a special grinding mode and a normal shaving mode. A traction line is fixedly connected to the outer wall of the locking mechanism. When the locking mechanism rotates clockwise, the grinding device will tighten, and when the locking mechanism rotates counterclockwise, the grinding device will relax, thereby controlling the start and stop of the grinding device. When in the grinding mode, the motor speed will be relatively slow, which is convenient for protecting the blade to complete the grinding smoothly.

[0016] In a further embodiment, a lubricating ring is sleeved on the outer side of the top of the outer ring, a groove is provided in the middle position of the top of the inner ring, a lubricating block is bonded in the groove, and a plurality of protrusions are provided on the lubricating ring and the lubricating block.

[0017] By adopting the above technical solution, although electric shavers are relatively safe, using excessive force or dragging the shaver quickly can still cause certain damage to the skin. The lubricating ring and lubricating block can reduce the speed at which the user pushes the shaver while secreting lubricant to ensure skin smoothness. The lubricating ring and lubricating block are arranged on the outside of the top of the outer ring so that the skin under the beard can be moisturized by the lubricant before the blade and the blade contact the beard, while the lubricating block in the middle of the top of the inner ring utilizes the empty space, reduces the risk of dry skin damage, and improves safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1This is a schematic diagram showing the structure of the inner and outer rings of the safe and stable razor head of the utility model;

[0019] Figure 2 This is a schematic diagram showing the structure of the retainer and locking mechanism in the safe and stable razor head of the utility model;

[0020] Figure 3 It is a structural diagram for reflecting the lead tube and the grinding device in the safe and stable razor head of the utility model.

[0021] In the figure, 1. inner ring; 2. outer ring; 3. retaining frame; 4. bottom support plate; 5. connecting bridge; 6. rotating shaft; 7. cutter disc; 8. scraper; 81. blade; 82. first blade; 83. second blade; 84. guide rail; 85. buffer part; 9. grinding device; 91. first round rod; 92. second round rod; 93. grinding block; 94. return spring; 10. lubricating ring; 11. lubricating block; 12. wire tube; 13. locking mechanism. DETAILED DESCRIPTION

[0022] The present invention will be described in further detail below with reference to the accompanying drawings.

[0023] The same parts are denoted by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the attached Figure 1 In the description, the terms "bottom" and "top," "inner" and "outer" refer to directions toward or away from a particular component geometry, respectively. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Thus, features defined as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout this specification, "plurality" means two or more, unless otherwise specifically defined in terms of the center's direction.

[0024] Example:

[0025] like Figure 1-Figure 3As shown, a safe and stable razor head comprises an inner ring 1, an outer ring 2, a retaining frame 3 and a bottom support plate 4. The outer ring 2 and the inner ring 1 are concentrically arranged, the retaining frame 3 is sleeved on the top periphery of the bottom support plate 4, the outer ring 2 and the inner ring 1 are integrally formed through a plurality of connecting bridges 5, the outer ring 2 is sleeved on the top periphery of the retaining frame 3, a lubricating ring 10 is sleeved on the top outer side of the outer ring 2, a groove is provided in the middle position of the top of the inner ring 1, a lubricating block 11 is bonded in the groove, a plurality of convex points are provided on the lubricating ring 10 and the lubricating block 11, a plurality of first cutting teeth arranged at equal intervals are provided on the inner side of the top of the outer ring 2, a plurality of second cutting teeth arranged at equal intervals are provided on the side wall of the inner ring 1 close to the connecting bridge 5, and the connecting bridge 5 is provided with a plurality of second cutting teeth arranged at equal intervals. A plurality of whisker holes are provided, an axial hole is provided at the center position of the bottom support plate 4, a rotating shaft 6 is rotatably provided in the axial hole, the top end of the rotating shaft 6 is fitted with the bottom end surface of the inner ring 1, a cutter disc 7 is sleeved on the top end of the rotating shaft 6, a plurality of scrapers 8 are evenly provided axially on the periphery of the cutter disc 7, a plurality of grinding devices 9 are evenly provided axially on the inner wall of the retaining frame 3, the grinding device 9 is used to grind the blade of the scraper 8, the grinding device 9 includes a first round rod 91, a second round rod 92, a grinding block 93 and a reset spring 94, one end of the first round rod 91 is fixedly connected to the inner wall of the retaining frame 3, the other end of the first round rod 91 is rotatably connected to one end of the second round rod 92, the first round rod 91 is located below the outer side of the top of the outer ring 2, and the grinding block 9 3 is fixedly mounted on the end of the second round rod 92 away from the first round rod 91, one end of the return spring 94 is welded and fixed to the middle position of the first round rod 91, and the other end of the return spring 94 is welded and fixed to the middle position of the first round rod. The diameter of the grinding block 93 is larger than the diameter of the second round rod 92. By arranging multiple grinding devices 9 inside the retaining frame 3, the original self-grinding structure arranged at the bottom of the static knife can be replaced, which greatly improves the service life of the static knife. At the same time, the grinding device 9 can make the blade of the scraper 8 sharper, thereby cutting the beard more cleanly and neatly, avoiding pulling and irritating the hair follicles. The grinding block 93 on the grinding device 9 mainly grinds the blade surface and the scraper 8 The ridge line on one side, when the scraper 8 rotates on one side of the blade grinding device 9, due to the angle setting of the first round rod 91 and the second round rod 92, one side of the blade surface will first contact the grinding block 93 on the second round rod 92, and in this process, the second round rod 92 will be pressed toward the first round rod 91. In this process, the return spring 94 begins to accumulate force, and after the entire grinding is completed, the return spring 94 bounces the grinding device 9 back to its original position and starts the next grinding. The convex points on the lubricating ring 10 and the lubricating block 11 can help the user slow down the shaving speed, and they can also secrete lubricant to protect the skin safety, avoid scratches, redness and swelling and other negative effects, and improve the safety of the device.

[0026] like Figure 1-Figure 3As shown, the scraper 8 rotates clockwise along the axis of the cutter disc 7. The scraper 8 includes a blade body 81, a first blade edge 82 and a second blade edge 83. The bottom of the blade body 81 is fixedly connected to the top of the cutter disc 7. The first blade edge 82 is welded to the left end of the top of the blade body 81, and the second blade edge 83 is welded to the right end of the top of the blade body 81. A buffer portion 85 is fixedly installed on the side of the second blade edge 83 close to the rotating shaft. The buffer portion 85 is made of flexible material. The buffer portion 85 is used to prevent the blade from being damaged by the grinding block 93 during the grinding process. A guide rail 84 is fixedly installed between the first blade 82 and the second blade 83. The left end of the guide rail 84 is fixedly connected to the right side wall of the first blade edge 82, and the right end of the guide rail 84 is fixedly connected to the right side wall of the second blade edge 83. The guide rail 84 is used to make the grinding block 93 grind from one side of the blade to the other side. The top periphery of the bottom support plate 4 is provided with a plurality of through holes, and the number of the plurality of through holes is the same as the number of the plurality of grinding devices The positions 9 correspond one to one, and a plurality of through holes are penetrated by guide tubes 12. A locking mechanism 13 is rotatably installed at the bottom of the bottom support plate 4. A plurality of traction wires are bonded to the locking mechanism 13. One end of the traction wire is fixedly connected to the side wall 13 of the locking mechanism, and the other end of the traction wire is fixedly connected to the middle position of the first round rod 91 through the guide tube 12. The locking mechanism 13 is used to control the start and stop of the grinding device 9. The guide slide 84 allows the grinding block 93 to grind all the way from the second blade 83 to the first blade 82, and the flexible buffer part 85 can prevent the grinding block 93 from being bumped or damaged when it contacts the blade. The traction wire on the locking mechanism 13 is fixedly connected to the middle position of the first round rod 91 through the guide tube 12. In this way, when the locking mechanism 13 rotates, the grinding device 9 will be pulled to a position that will not hinder the rotation of the scraper 8, thereby avoiding direct collision between the grinding device 9 and the high-speed scraper 8.

[0027] Specific implementation process: The shaver is divided into two modes, shaving mode and grinding mode. In shaving mode, the motor rotates at normal speed, and the blade surface of the scraper 8 cooperates with the bottom surface of the inner ring 1 and the outer ring 2 to cut the beard. When switching to grinding mode, the locking mechanism 13 will first rotate counterclockwise to loosen the traction wire wrapped around it. One end of the traction wire is wrapped around the locking mechanism 13, and the other end is fixedly connected to the middle position of multiple first round rods 91 through the lead tube 12. When the locking mechanism 13 is locked, the first round rod 91 will be fixed tightly against the inner wall of the retaining frame 3, and when the locking mechanism 13 is released, the first round rod 91 will be fixed tightly against the inner wall of the retaining frame 3. When the scraper 8 rotates and squeezes the grinding device 9, the second round rod 92 will be pressed toward the first round rod 91, and the spring will contract. After the grinding is completed, the spring releases the elastic force accumulated before, and pushes the first round rod 91 back to its previous position, thereby completing the reset.

[0028] In the embodiments disclosed in this utility model, the terms "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; "connected" can mean a direct connection or an indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the embodiments disclosed in this utility model based on specific circumstances.

[0029] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A safe and stable razor head, comprising an inner ring (1), an outer ring (2), a retaining frame (3) and a bottom support plate (4), wherein the outer ring (2) and the inner ring (1) are concentrically arranged, the retaining frame (3) is sleeved on the top periphery of the bottom support plate (4), the outer ring (2) and the inner ring (1) are integrally formed via a plurality of connecting bridges (5), and the outer ring (2) is sleeved on the top periphery of the retaining frame (3), characterized in that: An axial hole is provided at the center of the bottom support plate (4), a rotating shaft (6) is rotatably provided in the axial hole, the top end of the rotating shaft (6) is in contact with the bottom end surface of the inner ring (1), a cutter disc (7) is sleeved on the top end of the rotating shaft (6), and a plurality of scrapers (8) are evenly provided axially on the periphery of the cutter disc (7); The inner wall of the retaining frame (3) is evenly provided with a plurality of grinding devices (9) in the axial direction. The grinding devices (9) are used to grind the blade of the scraper (8). The grinding devices (9) include a first round rod (91), a second round rod (92), a grinding block (93) and a return spring (94). One end of the first round rod (91) is fixedly connected to the inner wall of the retaining frame (3), and the other end of the first round rod (91) is rotatably connected to one end of the second round rod (92). The grinding block (93) is fixedly installed on the end of the second round rod (92) away from the first round rod (91). One end of the return spring (94) is welded and fixed to the middle position of the first round rod (91), and the other end of the return spring (94) is welded and fixed to the middle position of the first round rod (91). The diameter of the grinding block (93) is larger than the diameter of the second round rod (92).

2. The safe and stable razor head according to claim 1, characterized in that: A plurality of first cutting teeth arranged at equal intervals are provided on the inner side of the top of the outer ring (2); a plurality of second cutting teeth arranged at equal intervals are provided on the side wall of the inner ring (1) close to the connecting bridge (5); and a plurality of whisker holes are provided on the connecting bridge (5); and the first round rod (91) is located below the outer side of the top of the outer ring (2).

3. The safe and stable razor head according to claim 1, characterized in that: The scraper (8) rotates counterclockwise along the axis of the cutter disc (7). The scraper (8) comprises a blade body (81), a first blade (82) and a second blade (83). The bottom of the blade body (81) is fixedly connected to the top of the cutter disc (7). The first blade (82) is welded to the left end of the top of the blade body (81). The second blade (83) is welded to the right end of the top of the blade body (81). A guide rail (84) is fixedly installed between the first blade (82) and the second blade (83). The left end of the guide rail (84) is fixedly connected to the right side wall of the first blade (82), and the right end of the guide rail (84) is fixedly connected to the right side wall of the second blade (83). The guide rail (84) is used to enable the grinding block (93) to grind from one side of the blade to the other side.

4. The safe and stable razor head according to claim 3, characterized in that: A buffer portion (85) is fixedly mounted on one side of the second blade (83) close to the rotating shaft. The buffer portion (85) is made of a flexible material and is used to prevent the blade from being damaged by the grinding block (93) during the grinding process.

5. The safe and stable razor head according to claim 1, characterized in that: The top periphery of the bottom support plate (4) is provided with a plurality of through holes, the number of the plurality of through holes corresponds to the plurality of grinding devices (9), and a lead tube (12) is passed through each of the plurality of through holes. A locking mechanism (13) is rotatably installed at the bottom of the bottom support plate (4), and a plurality of traction wires are bonded to the locking mechanism (13). One end of the traction wire is fixedly connected to the outer wall of the locking mechanism (13), and the other end of the traction wire is fixedly connected to the middle position of the first round rod (91) through the lead tube (12). The locking mechanism (13) is used to control the start and stop of the grinding device (9).

6. The safe and stable razor head according to claim 1, characterized in that: A lubricating ring (10) is sleeved on the outer side of the top of the outer ring (2), a groove is provided at the middle position of the top of the inner ring (1), a lubricating block (11) is bonded in the groove, and a plurality of protrusions are provided on both the lubricating ring (10) and the lubricating block (11).

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