A double-head shaver

Abstract

The utility model discloses a double -end shaver, including handle, detachable connection in the both ends of handle's shaving assembly and drive assembly. Handle and shaving assembly between through the quick -release structure of rotation realizes the connection, and this structure includes the connecting seat of setting in the handle end, and the outer peripheral wall of connecting seat is provided with the rotation groove, and the rotation groove is by the opening portion of axial extension and the circumferential limit slot of intercommunication constitutes, shaving assembly includes the rotating seat, and its inner wall is equipped with the boss of adaptation with rotation groove. Through the boss is axially inserted and is rotated into circumferential limit slot through opening portion, makes the boss and opening portion misregistration, realizes the quick installation and axial locking of shaving assembly. The utility model need not any tool, and one -handed operation can be operated, and when disassembling, can be withdrawn through reverse rotation, greatly promotes the efficiency and convenience of changing the efficiency and convenience of knife head.

Description

Technical Field

[0001] This utility model relates to the field of hair shaver technology, and in particular to a dual-head hair shaver. Background Technology

[0002] Personal grooming tools, such as razors and hair clippers, are evolving towards multi-functional integration. To meet diverse user grooming needs, multi-functional shavers equipped with various replaceable heads have emerged on the market. These products typically feature multiple shaving components with different functions (such as razor heads, hair clipper heads, nose hair trimmers, etc.) on a single handle, allowing users to switch between them according to their specific needs.

[0003] Currently, common methods for achieving a detachable connection between the shaving assembly and the handle include snap-fit ​​connections, threaded connections, or fixing with additional locking mechanisms. However, these connection methods have some inherent drawbacks: snap-fit ​​connections are prone to loosening due to wear after frequent use, resulting in wobbling and noise, affecting the user experience and shaving performance; threaded connections are cumbersome to operate, have low disassembly and assembly efficiency, and the threaded grooves are prone to accumulating dirt, making them difficult to clean; while using additional locking mechanisms increases the complexity of the structure and the number of parts.

[0004] Furthermore, for dual-head shavers, how to achieve a stable and efficient quick-release structure at both ends of the handle has become a technical problem that urgently needs to be optimized in this field. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings and deficiencies of the existing technology and to provide a dual-head shaver.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a dual-head shaver, comprising a handle, shaving components detachably connected to both ends of the handle, and a drive component. The handle and the shaving components are connected via a rotary quick-release structure. The rotary quick-release structure includes: a connecting seat disposed at the end of the handle, the outer peripheral wall of which has a rotating groove, the rotating groove consisting of an axially extending opening and a circumferential limiting groove communicating with the opening; the shaving component includes a rotating seat sleeved outside the connecting seat, the inner wall of which has a protrusion adapted to the rotating groove; by inserting the protrusion axially through the opening and screwing it into the circumferential limiting groove, the protrusion is misaligned with the opening to achieve the installation and axial locking of the shaving component.

[0007] As a preferred embodiment of this utility model, the handle includes a left shell and a right shell that interlock; both the left shell and the right shell have a semi-circular arc-shaped connecting part protruding from their ends; when the left shell and the right shell are interlocked, the two arc-shaped connecting parts are aligned and together form the connecting seat.

[0008] As a preferred embodiment of this utility model, a section of the rotating groove is provided on the outer arc of each of the arc-shaped connecting parts; two protrusions adapted to the rotating groove are symmetrically arranged on the inner wall of the rotating seat.

[0009] As a preferred embodiment of the present invention, the shaving assembly further includes a shaving head that engages with the rotating seat; the outer wall of the rotating seat is symmetrically provided with slots, and the inner wall of the shaving head is provided with corresponding locking blocks that are adapted to the slots.

[0010] As a preferred embodiment of the present invention, the drive assembly includes a control circuit board disposed within the handle and two drive motors; the two drive motors are respectively disposed at both ends of the handle, and their output shafts pass through the corresponding connecting seats and are connected to the shaving assembly in a transmission manner.

[0011] In a preferred embodiment of this invention, one shaving component is configured as a hair clipper head, and the other shaving component is configured as a razor head. The hair clipper head includes a stationary blade fixed within the razor head and a movable blade that cooperates with the stationary blade and is capable of reciprocating laterally relative to it. The razor head is provided with a connecting shaft and a blade holder that is oscillatingly mounted through the connecting shaft, and the movable blade is fixed to the blade holder. The razor head is also provided with a fixed shaft, and a torsion spring is sleeved on the fixed shaft, with the free end of the torsion spring abutting against the blade holder and providing the blade holder with a preload force that causes the movable blade to exert constant pressure on the stationary blade.

[0012] Compared with the prior art, the beneficial effects of this utility model are: The rotary quick-release mechanism allows for easy connection and locking of the shaving assembly to the handle through a simple "axial insertion, radial rotation" action. This process requires no tools and can be operated with one hand. Disassembly is achieved by simply rotating in the opposite direction, greatly improving the efficiency and convenience of changing the shaving head. Two symmetrically arranged protrusions on the inner wall of the rotating base engage with the rotating grooves of the two halves of the housing. This symmetrical design ensures more even force distribution, guaranteeing smooth, noiseless, and stable operation of the shaving assembly.

[0013] After the rotating seat is fitted onto the connecting seat formed by the mating of the left and right shells and locked in place, it constitutes a robust "reinforced clamp". This structure can apply radial restraint force to the ends of the left and right shells from the outside, effectively preventing the two half-shells from separating or misaligning at the joint when subjected to compression, twisting or accidental drop, significantly improving the rigidity and durability of the overall handle structure. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of the connecting seat and the rotating seat in this utility model; Figure 3 This is a schematic diagram of the structure of the handle end in this utility model; Figure 4 This is a schematic diagram of the rotating seat in this utility model; Figure 5 This is a schematic diagram of the structure of the hair clipper head in this utility model; Figure 6 This is a schematic diagram of the internal structure of the handle in this utility model.

[0015] Reference numerals: 1. Handle; 2. Shaving assembly; 3. Connecting seat; 4. Rotating groove; 5. Opening; 6. Circumferential limiting groove; 7. Rotating seat; 8. Protrusion; 9. Left shell; 10. Right shell; 11. Arc-shaped connecting part; 12. Shaving head; 13. Slot; 14. Control circuit board; 15. Drive motor; 16. Stationary blade; 17. Moving blade; 18. Connecting shaft; 19. Blade holder; 20. Fixed shaft; 21. Torsion spring. Detailed Implementation

[0016] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0017] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0018] like Figure 1-6 A dual-head shaver is shown, comprising a handle 1, shaving components 2 detachably connected to both ends of the handle 1, and a drive assembly. The handle 1 and the shaving components 2 are connected by a rotary quick-release structure. The rotary quick-release structure includes a connecting seat 3 disposed at the end of the handle 1, the outer peripheral wall of the connecting seat 3 having a rotating groove 4, the rotating groove 4 being composed of an axially extending opening 5 and a circumferential limiting groove 6 communicating with the opening 5. The shaving component 2 includes a rotating seat 7 sleeved outside the connecting seat 3, the inner wall of which has a protrusion 8 adapted to the rotating groove 4. By axially inserting the protrusion 8 through the opening 5 and screwing it into the circumferential limiting groove 6, the protrusion 8 is misaligned with the opening 5 to achieve the installation and axial locking of the shaving component 2.

[0019] The rotary quick-release structure allows for connection and locking between the shaving assembly 2 and the handle 1 through a simple "axial insertion and radial rotation" action. This process requires no tools and can be operated with one hand; disassembly is achieved by simply rotating in the opposite direction, greatly improving the efficiency and convenience of changing the shaving head. Two symmetrically arranged protrusions 8 on the inner wall of the rotating base 7 cooperate with the rotating grooves 4 of the two halves of the housing. This symmetrical design ensures more even force distribution, guaranteeing that the shaving assembly 2 operates smoothly without shaking or abnormal noise.

[0020] The handle 1 includes a left shell 9 and a right shell 10 that are interlocked; the ends of the left shell 9 and the right shell 10 are each provided with a semi-circular arc-shaped connecting part 11; when the left shell 9 and the right shell 10 are interlocked, the two arc-shaped connecting parts 11 are connected to each other to form the connecting seat 3.

[0021] After the rotating seat 7 is fitted onto the connecting seat 3 formed by the mating of the left and right shells 10 and locked in place, it constitutes a robust "reinforced clamp". This structure can apply radial restraint force to the ends of the left shell 9 and the right shell 10 from the outside, effectively preventing the two half-shells from separating or misaligning at the joint when subjected to compression, twisting or accidental drop, significantly improving the rigidity and durability of the overall structure of the handle 1.

[0022] Each of the arc-shaped connecting parts 11 has a section of the rotating groove 4 on its arc-shaped outer wall; the inner wall of the rotating seat 7 is symmetrically provided with two protrusions 8 that are adapted to the rotating groove 4.

[0023] The shaving assembly 2 also includes a shaving head 12 that engages with the rotating base 7; the outer wall of the rotating base 7 is symmetrically provided with slots 13, and the inner wall of the shaving head 12 is provided with a corresponding locking block that matches the slots 13 (not shown in the figure, any geometric shape that can engage with the slots 13 is acceptable, this is a conventional technical means in the field, so it is not specifically described).

[0024] The drive assembly includes a control circuit board 14 disposed in the handle 1 and two drive motors 15; the two drive motors 15 are respectively disposed at both ends of the handle 1, and their output shafts pass through the corresponding connecting seats 3 and are connected to the shaving assembly 2 in a transmission manner.

[0025] One shaving assembly 2 is configured as a hair clipper head, and the other shaving assembly 2 is configured as a razor head. The hair clipper head includes a stationary blade 16 fixed inside the razor head 12, and a movable blade 17 that cooperates with the stationary blade 16 and can swing laterally back and forth relative to it. The razor head 12 is provided with a connecting shaft 18 and a blade holder 19 that is swayably mounted through the connecting shaft 18. The movable blade 17 is fixed to the blade holder 19. The razor head 12 is also provided with a fixed shaft 20, and a torsion spring 21 is sleeved on the fixed shaft 20. The free end of the torsion spring 21 abuts against the blade holder 19 and provides the blade holder 19 with a preload force that keeps the movable blade 17 pressed against the stationary blade 16. The core improvement of this application lies in the detachable connection structure between the handle 1 and the shaving assembly 2, especially the rotary quick-release mechanism, rather than in the specific functional structure of the shaving assembly 2 itself. Therefore, those skilled in the art should understand that any shaving head that can be adapted to the rotating seat 7 and achieve a transmission connection, such as the hair clipper head, razor head, nose hair trimmer head, facial massage head, etc. mentioned in this application, falls within the protection scope of the connection scheme constructed in this application. Given that the internal functional structures of these shaving components 2 are known in the art and are not the inventive point of this application, they will not be described in detail here.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the utility model as defined by the appended claims and their equivalents.

Claims

1. A dual-head shaver, comprising a handle (1), shaving components (2) detachably connected to both ends of the handle (1), and a drive component, characterized in that: The handle (1) and the shaving assembly (2) are connected by a rotary quick-release structure. The rotary quick-release structure includes a connecting seat (3) disposed at the end of the handle (1). The outer peripheral wall of the connecting seat (3) is provided with a rotary groove (4). The rotary groove (4) is composed of an axially extending opening (5) and a circumferential limiting groove (6) communicating with the opening (5). The shaving assembly (2) includes a rotating seat (7) sleeved on the connecting seat (3). Its inner wall is provided with a protrusion (8) adapted to the rotary groove (4). The protrusion (8) is axially inserted through the opening (5) and screwed into the circumferential limiting groove (6), so that the protrusion (8) and the opening (5) are misaligned to realize the installation and axial locking of the shaving assembly (2).

2. The dual-head shaver according to claim 1, characterized in that: The handle (1) includes a left shell (9) and a right shell (10) that are interlocked; the ends of the left shell (9) and the right shell (10) are provided with semi-circular arc-shaped connecting parts (11); when the left shell (9) and the right shell (10) are interlocked, the two arc-shaped connecting parts (11) are connected to each other and together form the connecting seat (3).

3. The dual-head shaver according to claim 2, characterized in that: Each of the arc-shaped connecting parts (11) has a section of the rotating groove (4) on its arc-shaped outer wall; the inner wall of the rotating seat (7) is symmetrically provided with two protrusions (8) that are adapted to the rotating groove (4).

4. The dual-head shaver according to claim 1, characterized in that: The shaving assembly (2) also includes a shaving head (12) that engages with the rotating seat (7); the outer wall of the rotating seat (7) is symmetrically provided with slots (13), and the inner wall of the shaving head (12) is provided with a corresponding locking block that matches the slots (13).

5. The dual-head shaver according to claim 1, characterized in that: The drive assembly includes a control circuit board (14) disposed in the handle (1) and two drive motors (15); the two drive motors (15) are respectively disposed at both ends of the handle (1), and their output shafts pass through the corresponding connecting seats (3) and are connected to the shaving assembly (2) in a transmission manner.

6. The dual-head shaver according to claim 4, characterized in that: One of the shaving components (2) is configured as a hair clipper head, and the other shaving component (2) is configured as a razor head; the hair clipper head includes a stationary blade (16) fixed in the razor head (12) and a movable blade (17) that cooperates with the stationary blade (16) and can swing laterally relative to it; the razor head (12) is provided with a connecting shaft (18) and a blade holder (19) that is swayably mounted through the connecting shaft (18), and the movable blade (17) is fixed on the blade holder (19); the razor head (12) is also provided with a fixed shaft (20), a torsion spring (21) is sleeved on the fixed shaft (20), and the free end of the torsion spring (21) abuts against the blade holder (19) and provides the blade holder (19) with a preload force that makes the movable blade (17) press against the stationary blade (16) at a constant pressure.

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