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] This utility model belongs to the field of shaver technology, specifically relating to a curved tube rotating structure for a shaver. Background Technology

[0002] As people's living standards continue to improve, various small household appliances have entered the lives of ordinary people. Electric shavers, as shaving tools, are particularly popular among men. An electric shaver consists of a shaver head assembly and a body. The shaver head assembly generally includes a fixed blade holder assembly, a gear transmission assembly, and a lower cover fixing assembly. When the main unit is turned on, it drives the head, connected to the gear transmission assembly and the foil mechanism located within the fixed blade holder assembly, to rotate. The high-speed rotation of the moving blades in the foil assembly cuts the beard hairs that extend into the foil, achieving the purpose of shaving.

[0003] The appearance of current shaver products is generally quite regular, mainly because the design of the head transmission structure is very difficult or a suitable structure for the load shape has not been found. Therefore, only relatively standard geometric shapes can be used. If the shape of the shaver head is too exaggerated, such as the angle between the head shape and the body shape is too large or the head shape is significantly reduced, the existing structure cannot effectively solve this problem, which limits the development of product diversity.

[0004] An investigation revealed that Chinese patent CN202411548858.1, entitled "A Bending Head Reversing Transmission Mechanism and Its Telescopic Bending Head Reversing Transmission Mechanism for Shavers," includes two transmission discs and several telescopic connecting drive shafts. The first transmission disc is fixed to the motor shaft. The front end of the second transmission disc is connected to a functional component via a transmission shaft, and the rear end is connected to the first transmission disc via multiple telescopic connecting drive shafts. The telescopic connecting drive shafts are circumferentially spaced bent shafts. The first and second transmission discs are respectively provided with circumferentially spaced positioning holes for the two ends of the telescopic connecting drive shafts to be inserted and retract. The patent discloses its application in shavers. This structure connects the motor drive and the shaver head drive, which are not on the same axis, through the discs and telescopic connecting drive shafts, resulting in a bent head. However, the bending angle is fixed, and the head shape cannot be flexibly changed, failing to meet the needs of diverse product shapes. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a shaver with a curved tube rotation structure that is simple and reasonable in structure, highly adaptable, and has stable transmission, in view of the above-mentioned technical status.

[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a curved tube rotating structure for a shaver, the shaver including a shaver head and a body, the shaver head including a housing and a blade assembly, characterized in that: the curved tube rotating structure includes a curved tube and a spring, a first connector and a second connector disposed in the curved tube, the front end of the curved tube being connected to the rear end of the housing, the rear end being connected to the body through a base, the spring being a helical spring made of special high-performance steel wire, one end of the first connector being connected to the rear end of the spring, the other end being connected to a steel shaft, the steel shaft being connected to a shaft core in the base, one end of the second connector being connected to the front end of the spring, the other end being connected to a rotating shaft, the rotating shaft being connected to the blade assembly of the shaver head through a gear transmission.

[0007] As an improvement, one end of the first connector and the second connector is recessed with a positioning hole for inserting and positioning a steel shaft or rotating shaft. An outwardly folded protrusion is provided at the opening of the positioning hole. A spring is sleeved on the other end of the first connector and the second connector and abuts against the protrusion for positioning.

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

[0009] Furthermore, a fixing frame is provided inside the housing. The rear end of the fixing frame is a cylindrical structure with a reduced diameter. The front end of the bent tube is inserted into the rear end connecting hole of the housing and is connected to the rear end cylindrical structure of the fixing frame. A second oil-impregnated bearing is sleeved on the flat-head steel shaft. The second oil-impregnated bearing is installed inside the cylindrical structure of the fixing frame and located between the second connector and the gear. Inside the cylindrical structure, below the second oil-impregnated bearing, a stepped surface is formed that abuts against the protruding edge of the second connector.

[0010] Furthermore, the rear end of the bent tube is flared, the base is inserted into the flared end and fixed to the bent tube by screws, and the steel shaft is sleeved with a first oil-impregnated bearing, which is located in the base between the first connector and the shaft core.

[0011] Furthermore, the head of the base extends out of the curved tube, and an L-shaped groove for connecting with the machine body is formed on the outer wall of the head of the base.

[0012] Furthermore, the shaver is single-headed or double-headed. When the shaver is single-headed, the center of the shaver disc is provided with a circular opening for the gear to pass through. The inner wall of the circular opening is formed with a toothed surface that mates with the gear. The flat-headed steel shaft is connected to the shaver disc assembly through the gear and the toothed surface.

[0013] Finally, when the shaver is dual-headed, the housing has two blade assemblies, one on the left and one on the right. Each blade assembly has a transmission gear plate below it that meshes with a gear. A rotating shaft is fixedly inserted through the center of the transmission gear plate and connected to the blade plate of the blade assembly.

[0014] Compared with existing technologies, the advantages of this utility model are as follows: A curved tube is incorporated, connecting the shaver head to the body. The curved tube contains a spring and a connector. The spring connection transmits motor power to the head structure of the curved tube to drive the shaver head. This eliminates limitations on the shape of the shaver head, greatly improving its compatibility with the product's appearance. This utility model has a simple and reasonable structure, is easy to assemble, and solves the problem of traditional shaver head shapes being limited by the transmission mechanism. It not only ensures stable and reliable transmission but also allows for diverse head shapes. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0016] Figure 2 for Figure 1 A schematic diagram of the structure after removing the shell and the bend;

[0017] Figure 3 for Figure 1 Exploded view;

[0018] Figure 4 for Figure 1 A sectional view;

[0019] Figure 5 This is a cross-sectional view of Example 2.

[0020] 1. Bend, 2. Spring, 3. First connector, 4. Second connector, 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. Fixing bracket, 15. Second oil-impregnated bearing, 16. Cylindrical structure, 17. First oil-impregnated bearing, 18. L-shaped groove, 19. Cutter head assembly, 20. Transmission gear plate, 21. Rotating shaft. Detailed Implementation

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

[0022] Example 1

[0023] like Figures 1 to 4As shown, a curved tube rotating structure for a shaver is disclosed. The shaver includes a shaver head and a body. The shaver head includes a housing and a blade assembly. The curved tube rotating structure includes a curved tube 1 and a spring 2, a first connector 3, and a second connector 4 disposed within the curved tube 1. The front end of the curved tube 1 is connected to the rear end of the housing, and the rear end is connected to the body via a base 5. The spring 2 is a helical spring constructed with 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 within 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 connected to the blade assembly 10 via 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. An outwardly folded protrusion is provided at the opening of the positioning hole 11. The spring 2 is sleeved on the other end of the first connector 3 and the second connector 4 and abuts against the protrusion for positioning. The rotating shaft 8 is a flat-headed steel shaft 12 with a cylindrical upper section and a flat lower end. The gear 9 is mounted on the upper cylindrical section of the flat-headed steel shaft. The positioning hole 11 of the second connector 4 is a flat hole corresponding to the flat end of the flat-headed steel shaft 12. The flat end of the flat-headed steel shaft 12 is inserted into the flat hole of the second connector 4 for positioning. Chamfers are provided on the end face of the flat end of the flat-headed steel shaft 12 and at the flat hole of the second connector to facilitate assembly.

[0025] The housing 13 is equipped with a fixing frame 14. The rear end of the fixing frame 14 is a cylindrical structure with a reduced diameter. The front end of the bent tube 1 has an elastic locking foot, which allows the front end of the bent tube 1 to be inserted into the rear end connecting hole of the housing 13 and to cooperate with the rear end cylindrical structure of the fixing frame 14. A second oil-impregnated bearing 15 is sleeved on the flat-head steel shaft. The second oil-impregnated bearing 15 is mounted in the cylindrical structure 16 of the fixing frame 14 and is located between the second connector 4 and the gear 9. A stepped surface is formed below the second oil-impregnated bearing 15 in the cylindrical structure 16 and abuts against the protruding edge of the second connector 4.

[0026] The rear end of the bent tube 1 is flared, and the base 5 is inserted into the flared end and fixed to the bent tube 1 by screws. The steel shaft 6 is fitted with a first oil-impregnated bearing 17, which is located inside the base 5 between the first connector 3 and the shaft core 7. The head of the base 5 extends out of the bent tube 1, and an L-shaped groove 18 is formed on the outer wall of the head of the base 5 to connect with the machine body.

[0027] The shaver in this embodiment is double-headed. The housing 13 is formed by the joining of an upper housing and a lower housing. There are two blade disc assemblies 19, one on the left and one on the right. Each blade disc assembly 19 has a transmission gear 20 below it that meshes with the gear 9. A rotating shaft 21 is fixedly inserted through the center of the transmission gear 20 and connected to the blade disc of the blade disc assembly B.

[0028] During assembly, first, the first oil-impregnated bearing 17 is assembled in the corresponding cavity of the base 5. The steel shaft 6 and the shaft core 7 are then assembled and passed through the hole of the first oil-impregnated bearing 17. The first connector 3 is then installed on the other end of the steel shaft 6. Next, one end of the spring 2 is assembled to the first connector 3, and the other end is connected to the second connector 4. In this way, the entire spring assembly is completed on the outside of the bent tube 1. The head of the bent tube 1 is connected and positioned with the housing 13 and the fixing bracket 14. The assembled connecting spring assembly is then inserted into the inside of the bent tube 1 through the flared opening. The gear 9 is assembled with the cylindrical section of the flat-head steel shaft 12. The flat end of the flat-head steel shaft 12 is then passed through the second oil-impregnated bearing 15 until it is inserted into the flat hole in the second connector 4. The end face of the flat-head steel shaft 12 and the flat end face of the connector are designed with large chamfers to facilitate assembly.

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

[0030] Example 2

[0031] like Figure 5 As shown, a shaver with a curved tube rotating structure differs from that in Embodiment 1 in that: the shaver in this embodiment is a single-head shaver, and the middle of the shaver disc is provided with a circular opening for the gear 9 to pass through. The inner wall of the circular opening is formed with a toothed surface that mates with the gear 9. The flat-headed steel shaft 12 is connected to the shaver disc assembly B through the gear 9 and the toothed surface.

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

[0033] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A curved tube rotating structure for a shaver, the shaver comprising a shaver head and a body, the shaver head comprising a housing and a blade assembly, characterized in that: The bending pipe rotation structure includes a bending pipe and a spring, a first connector, and a second connector disposed inside the bending pipe. The front end of the bending pipe is connected to the rear end of the housing, and the rear end is connected to the machine body through a base. The spring is a spiral spring constructed 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 a 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 connected to the cutter disc of the cutter head assembly via a gear.

2. The bending pipe rotation structure according to claim 1, characterized in that: One end of the first connector and the second connector is recessed with a positioning hole for inserting and positioning a steel shaft or rotating shaft. The opening of the positioning hole is provided with an outwardly folded protrusion. A spring is sleeved on the other end of the first connector and the second connector and abuts against the protrusion for positioning.

3. The bending pipe 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 lower end. The gear is mounted on the upper cylindrical section of the flat-head steel shaft. The positioning hole of the second connector is a flat hole corresponding to the flat end of the flat-head steel shaft. The flat end of the flat-head steel shaft is inserted into the flat hole of the second connector for positioning. The end face of the flat end of the flat-head steel shaft and the flat hole of the second connector are respectively provided with chamfers to facilitate assembly.

4. The bending pipe rotation structure according to claim 3, characterized in that: The housing is equipped with a fixing frame. The rear end of the fixing frame is a cylindrical structure with a reduced diameter. The front end of the bent tube is inserted into the rear end connection hole of the housing and is connected to the rear end cylindrical structure of the fixing frame. A second oil-impregnated bearing is sleeved on the flat-head steel shaft. The second oil-impregnated bearing is installed inside the cylindrical structure of the fixing frame and is located between the second connector and the gear. Inside the cylindrical structure, below the second oil-impregnated bearing, there is a stepped surface that abuts against the protruding edge of the second connector.

5. The bending pipe rotation structure according to claim 4, characterized in that: The rear end of the bent tube is flared, and the base is inserted into the flared end and fixed to the bent tube by screws. The steel shaft is fitted with a first oil-impregnated bearing, which is located inside the base between the first connector and the shaft core.

6. The pipe bending and rotating structure according to claim 5, characterized in that: The head of the base extends out of the curved tube, and an L-shaped groove for connecting with the machine body is formed on the outer wall of the head of the base.

7. The pipe bending and rotating structure according to any one of claims 3 to 6, characterized in that: The razor is either single-headed or double-headed.

8. The pipe bending and rotating structure according to claim 7, characterized in that: When the shaver is a single-head shaver, the center of the shaver disc has a circular opening for a gear to pass through. The inner wall of the circular opening is formed with a toothed surface that mates with the gear. The flat-headed steel shaft is connected to the shaver disc assembly through the gear and the toothed surface.

9. The bending pipe rotation structure according to claim 7, characterized in that: When the shaver is dual-headed, the housing has two blade assemblies, left and right. Each blade assembly has a transmission gear plate below it that meshes with a gear. A rotating shaft is fixedly inserted through the center of the transmission gear plate and connected to the blade plate of the blade assembly.

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