Bent pipe rotating structure of shaver

Abstract

According to the bent pipe rotating structure of the shaver, a shaver head comprises a shell and a cutter head assembly, the bent pipe rotating structure comprises a bent pipe, a spring, a first connector and a second connector, the spring, the first connector and the second connector are arranged in the bent pipe, the front end of the bent pipe is connected with the rear end of the shell, and the rear end of the bent pipe is connected with a shaver body through a base. The spring is a spiral spring made of a special high-performance steel wire, one end of the first connector is connected with the rear end of the spring, the other end of the first connector is connected with the steel shaft, the steel shaft is connected with the shaft core in the base, one end of the second connector is connected with the front end of the spring, and the other end of the second connector is connected with the rotating shaft. The rotating shaft is in transmission connection with a cutter head of the cutter head assembly through a gear. The shaver is simple and reasonable in structure and convenient to assemble, motor power is transmitted to the head structure of the bent pipe through a spring structure by adopting spring connection to drive the shaver head to move, the problem that the head appearance of a traditional shaver is limited by a transmission mechanism is solved, transmission is stable and reliable, and meanwhile the head appearance is diversified.

Description

Technical Field

[0001] The present invention belongs to the technical field of shavers, and particularly relates to a bent pipe rotation structure of a shaver. Background Art

[0002] A shaver includes a cutter head assembly and a body. The cutter head assembly generally includes a fixed cutter holder assembly, a gear transmission assembly, and a cutter head lower cover fixing assembly. When the main machine is turned on, it drives the head connecting gear transmission assembly and the cutter net mechanism arranged in the fixed cutter holder assembly to rotate. When the moving cutter blade in the cutter net assembly rotates at a high speed, it can cut off the beard extending into the cutter net to achieve the purpose of shaving.

[0003] Currently, the appearance of shaver products is generally regular, mainly because the design difficulty of the head transmission structure is very large or no suitable adaptation structure for the load shape has been found. Therefore, only relatively regular geometric shapes can be adopted. If the shape of the cutter head part is too exaggerated, such as the angle between the head shape and the main body shape is too large or the head shape is significantly reduced, the existing structure cannot effectively solve this problem, restricting the diversified development of products.

[0004] After investigation, the existing Chinese patent with the patent number CN202411548858.1, "An elbow commutation transmission mechanism and its telescopic elbow commutation transmission mechanism for a shaver", includes two transmission discs and several telescopic connecting drive shafts. Among them, the first transmission disc is fixed on the motor shaft, the front end of the second transmission disc is connected to the functional part through a transmission shaft, and the rear end is connected to the first transmission disc through multiple telescopic connecting drive shafts. The telescopic connecting drive shafts are bent shafts arranged at circumferential intervals. Positioning holes for inserting and telescoping the two ends of the telescopic connecting drive shafts are respectively arranged at circumferential intervals on the first transmission disc and the second transmission disc; and its application on a shaver is disclosed. This structure connects the motor drive and the cutter head drive that are not on the same axis through the disc and the telescopic connecting drive shafts, making the head bent, but the bending angle is fixed, and the shape of the head cannot be flexibly changed, unable to meet the need for rich product shapes. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a bent pipe rotation structure of a shaver with a simple and reasonable structure, high adaptability, and stable transmission in view of the above technical status.

[0006] The technical solution adopted by the present invention to solve the above technical problems is as follows: A bent pipe rotating structure of a shaver, the shaver includes a shaver head and a body, the shaver head includes a housing and a cutter head assembly, and is characterized in that: the bent pipe rotating structure includes a bent pipe and a spring, a first connector and a second connector arranged in the bent pipe, the front end of the bent pipe is connected to the rear end of the housing, and the rear end is connected to the body through a base, the spring is a spiral spring made of special high-performance steel wire, one end of the first connector is connected to the rear end of the spring, the other end is connected to a steel shaft, the steel shaft is connected to the shaft core in the base, one end of the second connector is connected to the front end of the spring, the other end is connected to a rotating shaft, and the rotating shaft is in transmission connection with the cutter head of the cutter head assembly through a gear.

[0007] As an improvement, one end of the first connector and the second connector is recessed with a positioning hole for inserting and positioning the steel shaft or the rotating shaft, and a convex edge that turns outwards is provided at the opening of the positioning hole, and the spring is sleeved on the other ends of the first connector and the second connector and abuts against the convex edge for positioning.

[0008] Furthermore, the rotating shaft is a flat-headed steel shaft with a cylindrical upper section and a flat head at the lower end, the gear is assembled on the upper cylindrical section of the flat-headed steel shaft, the positioning hole of the second connector is a flat-shaped hole corresponding to the flat head end of the flat-headed steel shaft, the flat head end of the flat-headed steel shaft is inserted into the flat-shaped hole of the second connector for positioning, and chamfers for facilitating assembly are respectively provided at the end face of the flat head end of the flat-headed steel shaft and at the flat-shaped hole of the second connector.

[0009] Further, a fixing frame is arranged in the housing, the rear end of the fixing frame is a reduced-diameter cylindrical structure, the front end of the bent pipe is clamped into the rear end connection hole of the housing and is in fit connection with the rear end cylindrical structure of the fixing frame, a second oil-containing bearing is sleeved outside the flat-headed steel shaft, and the second oil-containing bearing is installed in the cylindrical structure of the fixing frame and is located between the second connector and the gear, and a stepped surface is formed below the second oil-containing bearing in the cylindrical structure and abuts against the convex edge of the second connector.

[0010] Further, the rear end of the bent pipe is in a flared shape, the base is inserted into the flared opening and is fixed to the bent pipe through screws, a first oil-containing bearing is sleeved outside the steel shaft, and the first oil-containing bearing is arranged in the base and is located between the first connector and the shaft core.

[0011] Furthermore, the head of the base extends out of the bent pipe, and an L-shaped buckle groove for cooperating with the body is formed on the outer wall of the head of the base.

[0012] Further, the shaver is single-headed or double-headed. When the shaver is single-headed, a circular opening for the gear to pass through is provided in the middle of the cutter head, and a tooth surface for cooperating with the gear is formed on the inner wall of the circular opening, and the flat-headed steel shaft is in transmission connection with the cutter head assembly through the cooperation of the gear and the tooth surface.

[0013] Finally, when the razor has two heads, there are two cutter head assemblies, left and right, inside the housing. Below each cutter head assembly, there is a transmission gear disk meshing with a gear. A rotating shaft is fixedly inserted through the center position of the transmission gear disk and is connected to the cutter disk of the cutter head assembly.

[0014] Compared with the prior art, the advantages of the present invention are as follows: A bent pipe is provided. The head of the razor is connected to the body through the bent pipe. A spring and a connection head are provided inside the bent pipe. The spring connection is used to transmit the motor power through the spring structure to the head structure of the bent pipe to drive the movement of the cutter head. In this way, there is no limitation on the shape of the head of the razor, greatly improving the adaptability to the appearance of the product. The practical structure of the present invention is simple and reasonable, and the assembly is convenient. It solves the problem that the shape of the head of the traditional razor is restricted by the transmission mechanism. Not only is the transmission stable and reliable, but also the head shape can develop diversely. Brief Description of the Drawings

[0015] Figure 1 is a schematic structural diagram of Embodiment 1 of the present invention;

[0016] Figure 2 is Figure 1 a schematic structural diagram after removing the housing and the bent pipe;

[0017] Figure 3 is Figure 1 an exploded view of

[0018] Figure 4 is Figure 1 a sectional view of

[0019] Figure 5 is a sectional view of Embodiment 2.

[0020] 1. Bent pipe, 2. Spring, 3. First connection head, 4. Second connection head, 5. Base, 6. Steel shaft, 7. Shaft core, 8. Rotating shaft, 9. Gear, 10. Cutter head assembly, 11. Positioning hole, 12. Flat head steel shaft, 13. Housing, 14. Fixed bracket, 15. Second oil-impregnated bearing, 16. Cylindrical structure, 17. First oil-impregnated bearing, 18. L-shaped retaining groove, 19. Cutter disk assembly, 20. Transmission gear disk, 21. Rotating shaft. Detailed Embodiments

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0022] Embodiment 1

[0023] As Figures 1 to 4As shown in the figure, a bent pipe rotation structure of a razor, the razor includes a razor head and a body, the razor head includes a housing and a cutter head assembly, the bent pipe rotation structure includes a bent pipe 1 and a spring 2, a first connector 3 and a second connector 4 arranged in the bent pipe 1. The front end of the bent pipe 1 is connected to the rear end of the housing, and the rear end is connected to the body through a base 5. The spring 2 is a spiral spring made of special high-performance steel wire. One end of the first connector 3 is connected to the rear end of the spring 2, and the other end is connected to a steel shaft 6. The steel shaft 6 is connected to a shaft core 7 in the base 5. One end of the second connector 4 is connected to the front end of the spring 2, and the other end is connected to a rotating shaft 8. The rotating shaft 8 is in transmission connection with the cutter head of the cutter head assembly 10 through a gear 9.

[0024] The specific structure is as follows: One end of the first connector 3 and the second connector 4 is recessed with a positioning hole 11 for inserting and positioning the steel shaft 6 or the rotating shaft 8. At the opening of the positioning hole 11, there is a convex edge folded outwards. The spring 2 is sleeved on the other ends of the first connector 3 and the second connector 4 and abuts against the convex edge for positioning. The rotating shaft 8 is a flat-headed steel shaft 12 with a cylindrical upper section and a flat head at the lower end. The gear 9 is assembled on the upper cylindrical section of the flat-headed steel shaft. The positioning hole 11 of the second connector 4 is a flat-shaped hole corresponding to the flat head end of the flat-headed steel shaft 12. The flat head end of the flat-headed steel shaft 12 is inserted into the flat-shaped hole of the second connector 4 for positioning. Chamfers for easy assembly are respectively provided at the end face of the flat head end of the flat-headed steel shaft 12 and at the flat-shaped hole of the second connector.

[0025] A fixing frame 14 is arranged in the housing 13. The rear end of the fixing frame 14 is a reduced-diameter cylindrical structure. The front end of the bent pipe 1 has elastic clamping feet, so that the front end of the bent pipe 1 is clamped into the rear connection hole of the housing 13 and is in fit and insertion connection with the rear cylindrical structure of the fixing frame 14. A second oil-impregnated bearing 15 is sleeved outside the flat-headed steel shaft. The second oil-impregnated bearing 15 is installed in the cylindrical structure 16 of the fixing frame 14, between the second connector 4 and the gear 9. A step surface is formed below the second oil-impregnated bearing 15 in the cylindrical structure 16 to abut against the convex edge of the second connector 4.

[0026] The rear end of the bent pipe 1 is in a flared shape. The base 5 is inserted into the flared opening and fixed to the bent pipe 1 by screws. A first oil-impregnated bearing 17 is sleeved outside the steel shaft 6. The first oil-impregnated bearing 17 is arranged in the base 5, between the first connector 3 and the shaft core 7. The head of the base 5 extends out of the bent pipe 1, and an L-shaped clamping groove 18 for fit connection with the body is formed on the outer wall of the head of the base 5.

[0027] The razor in this embodiment is a double-headed one. The housing 13 is formed by butting an upper shell and a lower shell. The cutter head assemblies 19 are two on the left and right. Below each cutter head assembly 19, a transmission gear disk 20 meshing with the gear 9 is respectively provided. A rotating shaft 21 is fixedly penetrated through the center position of the transmission gear disk 20 and is connected to the cutter head of the cutter head assembly B.

[0028] During assembly, first assemble the first oil-impregnated bearing 17 into the corresponding cavity of the base 5. Assemble the steel shaft 6 and the shaft core 7, and then pass them through the hole of the first oil-impregnated bearing 17. Install the first connector 3 at the other end of the steel shaft 6. Then assemble one end of the spring 2 to the first connector 3 and connect the other end to the second connector 4. In this way, the entire spring component is assembled outside the elbow pipe 1. Connect and position the head of the elbow pipe 1 with the housing 13 and the fixing bracket 14, and insert the assembled connecting spring component as a whole into the elbow pipe 1 from the bell mouth of the elbow pipe 1. Fit and assemble the gear 9 with the cylindrical section of the flat-headed steel shaft 12, and then pass the flat-headed end of the flat-headed steel shaft 12 through the second oil-impregnated bearing 15 until it is inserted into the flat-shaped hole in the second connector 4. The end face of the flat-headed steel shaft 12 and the flat mouth end face of the connector are both designed with larger chamfers to facilitate assembly.

[0029] The working principle is as follows: The motor rotates, driving the shaft core 7, then driving the steel shaft 6 and the first connector 3 to rotate. The spring 2 rotates accordingly, and then drives the second connector 4 and the flat-headed steel shaft 12 to rotate. The gear 9 rotates, and the transmission gear disk 20 rotates, realizing the rotation of the cutter head assembly B, thereby realizing shaving.

[0030] Embodiment 2

[0031] As Figure 5 shown, a rotating structure of the elbow pipe of a shaver, which is different from that of Embodiment 1 in that: the shaver in this embodiment is single-headed, and a circular opening for the gear 9 to pass through is provided in the middle of the cutter head. The inner wall of the circular opening is formed with a tooth surface that cooperates with the gear 9, and the flat-headed steel shaft 12 is drivingly connected to the cutter head assembly B through the cooperation of the gear 9 and the tooth surface.

[0032] The working principle is as follows: The motor rotates, driving the shaft core 7 to drive the steel shaft 6 and the first connector 3 to rotate. The spring 2 rotates accordingly, and then drives the second connector 4 and the flat-headed steel shaft 12 to rotate. The gear 9 rotates, realizing the rotation of the cutter head assembly B, thereby realizing shaving.

[0033] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and refinements can still be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. The swivel structure of the bent tube of a razor, the razor comprising a razor head and a body, the razor head comprising a housing and a cutter head assembly, characterized in that: The elbow rotation structure includes an elbow pipe, and a spring, a first connector, and a second connector disposed inside the elbow pipe. The front end of the elbow pipe is connected to the rear end of the housing, and the rear end is connected to the fuselage through a base. The spring is a spiral spring made of steel wire. One end of the first connector is connected to the rear end of the spring, and the other end is connected to a steel shaft. The steel shaft is connected to the shaft core inside the base. One end of the second connector is connected to the front end of the spring, and the other end is connected to a rotating shaft. The rotating shaft is drivingly connected to the cutter head assembly of the cutter head through a gear.

2. The elbow rotation structure according to claim 1, wherein: One end of the first connector and the second connector are recessed with positioning holes for inserting and positioning the steel shaft or the rotating shaft. At the opening of the positioning hole, there is a convex edge that is turned outwards. The spring is sleeved on the other ends of the first connector and the second connector and abuts against the convex edge for positioning.

3. The elbow rotation structure according to claim 2, characterized in that: The rotating shaft is a flat-head steel shaft with a cylindrical upper section and a flat head at the lower end. The gear is assembled on the upper cylindrical section of the flat-head steel shaft. The positioning hole of the second connector is a flat-shaped hole corresponding to the flat head end of the flat-head steel shaft. The flat head end of the flat-head steel shaft is inserted into the flat-shaped hole of the second connector for positioning. Chamfers are respectively provided at the end face of the flat head end of the flat-head steel shaft and at the flat-shaped hole of the second connector for easy assembly.

4. The elbow rotation structure according to claim 3, characterized in that: A fixing frame is provided inside the housing. The rear end of the fixing frame is a reduced-diameter cylindrical structure. The front end of the elbow pipe is clamped into the rear connection hole of the housing and is in fit and insertion connection with the rear cylindrical structure of the fixing frame. A second oil-impregnated bearing is sleeved outside the flat-head steel shaft. The second oil-impregnated bearing is installed inside the cylindrical structure of the fixing frame, between the second connector and the gear. A step surface is formed below the second oil-impregnated bearing inside the cylindrical structure and abuts against the convex edge of the second connector.

5. The elbow rotation structure according to claim 4, characterized in that: The rear end of the elbow pipe is in a flared shape. The base is inserted at the flared opening and is fixed to the elbow pipe by screws. A first oil-impregnated bearing is sleeved outside the steel shaft. The first oil-impregnated bearing is provided inside the base, between the first connector and the shaft core.

6. The elbow rotation structure according to claim 5, characterized in that: The head of the base extends outside the elbow pipe, and an L-shaped snap groove for cooperating with the fuselage is formed on the outer wall of the head of the base.

7. The elbow rotation structure according to any one of claims 3 to 6, characterized in that: The shaver is single-headed or double-headed.

8. The elbow rotation structure according to claim 7, characterized in that: When the shaver is single-headed, a circular opening for the gear to pass through is provided in the middle of the cutter head. The inner wall of the circular opening is formed with a tooth surface for cooperating with the gear. The flat-head steel shaft is drivingly connected to the cutter head assembly through the cooperation of the gear and the tooth surface.

9. The elbow rotation structure according to claim 7, wherein: When the shaver is double-headed, two left and right cutter head assemblies are provided inside the housing. Below each cutter head assembly, there is a transmission gear disk meshing with the gear. A rotating shaft is fixedly passed through the center position of the transmission gear disk and is connected to the cutter head of the cutter head assembly.

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