Back shaver
The design of the angle adjustment component solves the problem of inconvenient angle adjustment of the back shaver handle, achieving precise adjustment and stable locking of the handle, thus improving user comfort and ease of operation.
Patent Information
- Application Number
- CN202520531616.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-25
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-03-25
AI Technical Summary
Existing back shavers cannot precisely adjust and fix the bending angle of the handle, resulting in inconvenience and insufficient comfort during use.
The angle adjustment component uses two gears to achieve free adjustment and locking of the handle angle, including a pressing shaft, a return spring, a ring seat, and a gear structure, allowing the handle angle to rotate freely and lock precisely.
It achieves precise adjustment and secure locking of the back shaver handle angle, is simple to operate, highly comfortable, has a wide angle range, and is compact and low in cost.
Smart Images
Figure CN223863829U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a shaver, and more particularly to a shaver for the back of the body. Background Technology
[0002] Today, men and women use many different types of electric shavers for cosmetic purposes. Common examples include razors and epilators for shaving specific areas of body hair, such as beards and underarms. However, for back hair, which is not operated from the front, and requires the user to reach the desired area, the shaver head must be adapted to the user's back contours. Common facial shavers are not suitable for this purpose. Back shavers, due to length limitations, non-facing operation, and even the limitation of blind operation from the back, have undergone completely different development and design philosophies compared to facial shavers. The handle becomes a key component of back shavers. Users of different heights have different needs for optimal handle curvature, so the overall feel and shaving comfort are closely related to the handle angle. How to accurately adjust and fix the handle curvature angle is a problem that urgently needs to be solved. Summary of the Invention
[0003] This invention provides a back shaver that allows for easy adjustment and locking of the handle's bending angle, and offers a good feel.
[0004] To solve the above-mentioned technical problems, this utility model adopts the following technical solution: a back shaver, including a handle and a shaver head connected to the top of the handle. The handle includes a first handle with the shaver head connected to its top, a second handle that is foldably connected to the first handle and for the user to grip, and an angle adjustment component connected between the first and second handles to achieve an adjustable bending angle. The angle adjustment component includes a ring platform connected to the transmission rod of the second handle and having protrusions on both sides forming two ring seats, an inner ring connector that is pulsatorically connected to the first handle and cooperates with the ring platform to form a cavity, a pressing shaft mounted on the ring platform that is non-rotatable relative to the ring platform, a first gear, a second gear, and a return spring that are pulsatorically connected to the inner ring connector. The two ring seats are the first ring seat and the second ring seat, respectively. One end of the pressing shaft protrudes from the outer center of the first ring seat to form an operating point. The pressing part has one end extending through the cavity along the central axis and movable within the limiting groove on the inner side of the second ring seat. A first face gear, a second face gear, and a return spring are sequentially mounted on the pressing shaft from the first ring seat to the second ring seat within the cavity. The two ends of the return spring abut against the inner walls of the second face gear and the second ring seat, respectively. The first and second face gears have meshing teeth along their circumference on their facing surfaces. The first face gear is rotatable on the pressing shaft, while the second face gear is fixedly connected to it. Under the action of the return spring, manually operating the pressing shaft drives the second face gear to move axially. The angle adjustment component, through the engagement / disengagement relationship between the second and first face gears, enables the free rotation and locking of the inner ring connecting piece and the first handle relative to the second handle on the ring platform.
[0005] As an improvement: the end of the pressing shaft limit connection within the limit groove has a barb structure to prevent it from coming out of the limit groove.
[0006] As an improvement: the end section of the pressing shaft is hollow and leaf-shaped, and each pressing shaft leaf has a barb structure at its end.
[0007] As an improvement: the engagement / disengagement states of the second gear and the first gear include a disengaged state and a locked engagement state. By axially pressing the operating end of the pressing shaft, the spring force of the return spring is overcome, and the pressing shaft drives the second gear to move towards the second ring seat, causing the second gear to disengage from the first gear and disengage. The first gear, along with the inner ring connector and the first handle, rotates freely around the pressing shaft, thereby realizing the angle adjustment between the first handle and the second handle. The angle adjustment component is unlocked and can rotate. When the force of the operating end of the pressing shaft is released, the pressing shaft moves towards the first ring seat side under the spring force of the return spring until the teeth on the two opposing surfaces of the second gear and the first gear mesh with each other. That is, the second gear locks the rotation of the first gear and enters the locked engagement state, locking the angle adjustment component.
[0008] As an improvement, the first gear and the inner ring connector are connected by a slotted transmission, that is, the outer wall of the first gear has a first slot, and the inner wall of the inner ring connector is provided with a second slot that is connected to the first slot.
[0009] The beneficial effects of this invention are as follows: the two handles of the back shaver can freely rotate and lock at their respective angles through an angle adjustment component, requiring only a pressing force on the pressing shaft, making operation very convenient. Precise adjustment and limiting of the angle between the first and second handles facilitates adjusting the shaver to the appropriate position; the adjustment method is simple and highly reliable. Furthermore, since locking is achieved through the meshing of two gears, the locking accuracy can be adjusted as needed by adjusting the gear pitch and number of teeth, breaking the current situation where locking is limited to a fixed angle. This invention offers unobstructed rotation and a large degree of angle freedom, theoretically ranging from 0 to 360 degrees, and is easy to store. The entire angle adjustment component is compact, securely connected, and low-cost; the handles of the back shaver provide a comfortable grip and are very easy to adjust.
[0010] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of one embodiment of the back shaving device of this utility model.
[0012] Figure 2 yes Figure 1 A schematic diagram of the explosion structure.
[0013] Figure 3 This is an exploded view of the angle adjustment component. Detailed Implementation
[0014] In the description of this utility model, it should be noted that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, it should be understood that the terms "connected," "joined," and "fixed," etc., used in this utility model should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or a welded connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction relationship between two components, unless otherwise explicitly defined. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0015] like Figure 1 , Figure 2 , Figure 3As shown, one embodiment of the back shaver of this utility model includes a handle and a shaver head 1 connected to the top of the handle. The handle includes a first handle 2 with the shaver head connected to its top, a second handle 3 that is foldably connected to the first handle 2 and for the user to grip, and an angle adjustment assembly connected between the first handle 2 and the second handle 3 to achieve an adjustable bending angle. The angle adjustment assembly includes a ring platform 4 connected to the transmission rod of the second handle 3 and having protrusions on both sides forming two ring seats, an inner ring connector 5 that is pulsatorically connected to the first handle 2 and forms a cavity with the ring platform 4, a pressing shaft 6 mounted on the ring platform 4 and not rotatable relative to the ring platform 4, a first gear 7, a second gear 8, and a return spring 9 that are pulsatorically connected to the inner ring connector 5. The inner ring connector 5 and the first handle 2 can be fixedly connected by a plug-in connector or directly integrally formed. The two ring seats are respectively the first ring seat 41 and the second ring seat 42. One end of the pressing shaft 6 protrudes from the center of the outer side of the first ring seat to form an operating pressing part, and the other end extends through the cavity along the central axis and is movably connected to the limiting groove 43 on the inner side of the second ring seat 42. The pressing shaft 6 is not rotatable relative to the ring platform 4. This can be achieved by inserting a cross or flower-shaped groove 44 in the center of the first ring seat and matching the shape of the pressing shaft. At the same time, this matching setting can also provide a guiding effect for the axial movement of the pressing shaft. In this example, the first gear 7 and the inner ring connecting member 5 are connected by a slotted transmission. That is, the outer wall of the first gear 7 has a first slot 71, and the inner wall of the inner ring connecting member 5 is provided with a second slot 51 that is connected to the first slot. In this embodiment, the first slot is a groove and the second slot is a plug. Of course, they can also be interchanged. Setting the slot by the outer wall thickness can reduce the number of parts, reduce costs, reduce size, simplify assembly, and stabilize the transmission connection. A first gear 7, a second gear 8, and a return spring 9 are sequentially fitted onto the pressing shaft 6 within the cavity, from the first ring seat to the second ring seat. The two ends of the return spring 9 abut against the inner walls of the second gear 8 and the second ring seat, respectively. To limit the travel of the pressing shaft and ensure its trajectory, the pressing shaft 6 in this embodiment has a barb structure 61 at its end, which is connected to the limiting groove, to prevent it from dislodging. For ease of assembly and to achieve unidirectional insertion and prevent dislodging, the end of the pressing shaft 6 is hollow and petal-shaped. Each petal of the pressing shaft 6 has a barb structure 61 at its end. The petals have a certain degree of elasticity at the end of the pressing shaft, facilitating unidirectional insertion into the limiting groove. After insertion, the shaft diameter resets or expands to engage with the barb structure 61, preventing dislodging. The first gear 7 and the second gear 8 have meshing teeth along their circumference on their opposing surfaces. The first gear 7 is rotatable on the pressing shaft, and the second gear 8 is fixedly connected to the pressing shaft.
[0016] Under the action of the return spring, the manual operation pressing shaft operation end drives the second gear 8 to move axially. The angle adjustment component, through the engagement and disengagement relationship between the second gear 8 and the first gear 7, realizes the free rotation and locking of the inner ring connecting part 5 and the first handle relative to the second handle on the ring platform. The engagement / disengagement states of the second face gear and the first face gear 7 include a disengagement state and a meshing / locking state. By axially pressing the operating end of the pressing shaft, the spring force of the return spring is overcome, and the pressing shaft drives the second face gear 8 to move towards the second ring seat 42, causing the second face gear 8 to disengage from the first face gear 7 and disengage. The first face gear 7, along with the inner ring connector 5 and the first handle 2, rotates freely around the pressing shaft, thereby realizing the angle adjustment between the first handle 2 and the second handle 3. The angle adjustment component is unlocked and can rotate. When the force of the operating end of the pressing shaft is released, the pressing shaft moves the second face gear 8 towards the first ring seat 41 under the action of the spring force of the return spring, until the teeth on the two opposing surfaces of the second face gear 8 and the first face gear 7 mesh with each other. That is, the second face gear locks the rotation of the first face gear and enters the meshing / locking state, and the angle adjustment component is locked.
[0017] Although the present invention has been disclosed above with specific embodiments, it is not intended to limit the present invention. Any person skilled in the art may make some modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the scope of the appended claims.
Claims
1. A back shaver, comprising a handle and a shaver head (1) connected to the top of the handle, characterized in that: The handle includes a first handle (2) with a razor head connected to the top, a second handle (3) that is flexibly connected to the first handle (2) and gripped by the user, and an angle adjustment component that connects the first handle (2) and the second handle (3) and allows for adjustable bending angle. The angle adjustment component includes a ring platform (4) connected to the transmission rod of the second handle (3) and having protrusions on both sides forming two ring seats, an inner ring connector (5) that is pulsatorically connected to the first handle (2) and forms a cavity with the ring platform (4), a pressing shaft (6) that is mounted on the ring platform (4) and is non-rotatable relative to the ring platform (4), a first face gear (7), a second face gear (8), and a return spring (9) that are pulsatorically connected to the inner ring connector (5). The two ring seats are the first ring seat (41) and the second ring seat (42), respectively. One end of the pressing shaft (6) protrudes from the center of the outer side of the first ring seat to form an operating pressing part, and the other end extends through the cavity along the central axis. The cavity is movable and the limiting connection is in the limiting groove on the inner side of the second ring seat (42). On the pressing shaft (6), the first face gear (7), the second face gear (8) and the return spring (9) are sequentially sleeved in the cavity from the first ring seat to the second ring seat. The two ends of the return spring (9) respectively abut against the inner side wall of the second face gear (8) and the second ring seat. The first face gear (7) and the second face gear (8) are respectively provided with meshable teeth along the circumference on the facing surfaces. The first face gear (7) can rotate on the pressing shaft. The second face gear (8) is fixedly connected to the pressing shaft. Under the action of the return spring, the pressing shaft operating end is manually operated to drive the second face gear (8) to move axially. The angle adjustment component realizes the free rotation and locking of the inner ring connecting part (5) and the first handle relative to the second handle on the ring platform through the engagement and disengagement relationship between the second face gear (8) and the first face gear (7).
2. The back shaver according to claim 1, characterized in that: The pressing shaft (6) is connected to the end of the limiting groove and has a barb structure (61) to prevent it from coming out of the limiting groove.
3. The back shaver according to claim 2, characterized in that: The end of the pressing shaft (6) is hollow in shape, and each pressing shaft (6) has a barb structure (61) at the end of its petal.
4. The back shaver according to claim 1, 2, or 3, characterized in that: The engagement / disengagement states of the second gear and the first gear (7) include a disengaged state and a locked engagement state. By axially pressing the operating end of the pressing shaft, the spring force of the return spring is overcome, and the pressing shaft drives the second gear (8) to move towards the second ring seat (42), so that the second gear (8) and the first gear (7) are separated and the engagement state is released. The first gear (7) carries the inner ring connector (5) and the first handle (2) to rotate freely around the pressing shaft, thereby realizing the angle adjustment between the first handle (2) and the second handle (3). The angle adjustment component is unlocked and can rotate. The force of the operating end of the pressing shaft is released, and the pressing shaft moves the second gear (8) towards the first ring seat (41) under the action of the spring force of the return spring, until the teeth on the two opposing surfaces of the second gear (8) and the first gear (7) mesh with each other, that is, the second gear locks the rotation of the first gear and enters the locked engagement state, and the angle adjustment component is locked.
5. The back shaver according to claim 1, 2, or 3, characterized in that: The first gear (7) and the inner ring connector (5) are engaged in a slotted transmission, that is, the outer wall of the first gear (7) has a first slot, and the inner wall of the inner ring connector (5) is provided with a second slot that engages with the first slot.
6. The back shaver according to claim 4, characterized in that: The first gear (7) and the inner ring connector (5) are engaged in a slotted transmission, that is, the outer wall of the first gear (7) has a first slot, and the inner wall of the inner ring connector (5) is provided with a second slot that engages with the first slot.