WO2020019242A1

WO2020019242A1 - Joint structure and shaving device

Info

Publication number: WO2020019242A1
Application number: PCT/CN2018/097222
Authority: WO
Inventors: 孟凡迪; 邱云峰
Original assignee: 舒可士（深圳）科技有限公司
Priority date: 2018-07-26
Filing date: 2018-07-26
Publication date: 2020-01-30
Also published as: EP3827941A1; EP3827941B1; KR20210022751A; EP3827941A4; RU2762358C1; KR102594739B1

Abstract

A joint structure and a shaving device are provided. The joint structure comprises a first joint component (10) and a second joint component (20). The first joint component (10) is provided with a connection shaft (11), and the second joint component (20) is provided with a connection cavity (21) having a shape matching the connection shaft (11). The connection shaft (11) has at least two protruding fasteners (30). A locking fastener (40) corresponding to the position of each of the protruding fasteners (30) is disposed at the connection cavity (21), wherein each of the locking fasteners (40) is able to slide in a radial direction and has a front end that extends into the connection cavity (21). Each of the locking fasteners (40) is configured with an elastic member (50) used to force the locking fastener (40) to slide toward the connection cavity (21). When the connection shaft (11) is inserted into the connection cavity (21), the protruding fasteners (30) force the corresponding locking fasteners (40) to slide radially until the locking fasteners (40) are fastened and connected. The elastic members (50) can maintain an appropriate elastic force, and so can ensure that the first joint component (10) and the second joint component (20) are always stably connected.

Description

Connection structure and shaving device

Technical field

The present application belongs to the technical field of personal care products, and particularly relates to a coupling structure and a shaving device.

Background technique

Personal care products, such as shaving devices, generally include a cutter head and a handle. The cutter head and the handle are often connected by a buckle between the buckle plate and the base of the buckle plate to achieve a detachable connection between the two. However, in the existing fastening method, if the shaving device is used for a long time, the connection fastening plate of the shaving device will be weakened due to fatigue, and the stable fastening with the fastening plate base cannot be maintained. As a result, the life of the shaving device is shortened. Therefore, it is necessary to provide a new coupling structure to improve that personal care products such as shaving devices can be frequently attached and detached for use while maintaining a stable connection state.

technical problem

The purpose of the embodiments of the present application is: on the one hand, to provide a coupling structure, which aims to solve the technical problem that the personal care products such as shaving devices in the prior art cannot maintain frequent assembly and disassembly and maintain a stable connection state. .

On the other hand, a shaving device is provided, which aims to solve the technical problem that the personal care products such as the shaving device in the prior art cannot maintain frequent attaching and detaching and maintain a stable connection state.

Technical solutions

To solve the above technical problems, the technical solutions adopted in the embodiments of the present application are:

A coupling structure is provided, including a first coupling member and a second coupling member, at least one of the first coupling member and the second coupling member is provided with a connecting shaft, the first coupling member and the first coupling member The other of the two coupling members is provided with a connection cavity, and the shape of the connection shaft is adapted to the shape of the connection cavity and can be connected or separated from each other; the connection shaft is provided with at least two protruding in the radial direction. Locking buckles, the connecting cavity is provided with a locking buckle corresponding to the position of each of the locking buckles and capable of sliding in the radial direction and the front end protruding into the connecting cavity, and each of the locking buckles is provided with a force for forcing An elastic member that slides the lock toward the connection cavity, and when the connection shaft is inserted into the connection cavity, the convex button forces the corresponding lock to slide radially until it is engaged with the lock.

A shaving device is provided, which includes a cutter head assembly and a handle assembly. The cutter head assembly includes at least one of the first coupling member or the second coupling member in the aforementioned coupling structure. The handle assembly includes In the other coupling structure, the first coupling member or the second coupling member, the cutter head assembly and the handle assembly are connected through the first coupling member and the second coupling member. Or separate to achieve connection or separation.

Beneficial effect

Compared with the prior art, the present application has a beneficial effect: in the coupling structure of the present application, the mutual connection or separation between the first coupling member and the second coupling member is achieved by the mutual connection or separation between the connection shaft and the connection cavity, The mutual connection or separation between the connecting shaft and the connecting cavity is achieved by the fastening between the locking buckle and the male buckle. The fastening between the male buckle and the locking buckle is when the connecting shaft is inserted into the connecting cavity. Compress and force the lock to slide radially, and as the depth of the connection shaft inserted into the connection cavity increases, the male buckle is released from the pressure on the lock, and at the same time, the lock is oriented under the elastic force of the elastic member configured on the lock. The connecting cavity slides and restricts the male buckle, so that the male buckle and the lock buckle are buckled. Since the connection between the male buckle and the lock buckle is achieved by forcing the lock buckle to move in the radial direction, the elastic piece used in forcing the radial movement of the lock buckle is an independent and elastic component. Through the deformation of the lock itself, it can effectively ensure that the first coupling member and the second coupling member are frequently assembled and disassembled, and the elastic members can maintain the due elastic force, thereby ensuring that the first coupling member and the second coupling member are in When the connection status is changed, it can always maintain a stable connection status. In addition, the connection method of this coupling structure is easy to realize. During the installation process, as long as a certain pressure is applied when the connection shaft is inserted into the connection cavity, the connection can be achieved by forcing the lock to slide in the radial direction through the convex buckle; during the disassembly process, the main Apply a force to the connecting shaft and pull out in the axial direction. The convex buckle forces the lock to slide in the radial direction to achieve separation.

Because the shaving device of the present application uses the above-mentioned coupling structure, even if the cutter head assembly and the handle assembly are frequently attached and detached, the elastic member in the coupling structure can still be used to ensure that the first coupling member and the second coupling member are in a connected state. When the change is made, the cutter head component and the handle component can be maintained in a stable connection state at the same time, and the entire assembly and disassembly operation is very convenient and practical.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the present application. For some embodiments, for those of ordinary skill in the art, other drawings can be obtained according to these drawings without paying creative labor.

FIG. 1 is a schematic structural diagram of a coupling structure according to an embodiment of the present application.

Fig. 2 is a sectional view taken along line A-A in Fig. 1.

FIG. 3 is an exploded schematic diagram 1 of a coupling structure according to an embodiment of the present application.

FIG. 4 is an exploded schematic view 2 of a coupling structure provided by an embodiment of the present application.

FIG. 5 is an exploded schematic view 3 of a coupling structure provided by an embodiment of the present application.

FIG. 6 is a schematic structural diagram of a first coupling component of a coupling structure according to an embodiment of the present application.

FIG. 7 is a schematic structural diagram of a second coupling component of a coupling structure according to an embodiment of the present application.

FIG. 8 is a cross-sectional view of a shaving apparatus according to an embodiment of the present application.

FIG. 9 is a schematic structural exploded view of a shaving apparatus according to an embodiment of the present application.

Among them, each reference numeral in the figure:

10—the first connecting part 11—the connecting shaft 12—Cutting plane

20—Second connection part 21—Connecting cavity 22—Limit plane

23—mounting cavity 24—channel hole 30—convex buckle

31—the upper limit area 40—Lock buckle 41—Lower limit area

42—Chamfered arc surface 43—Bump 44—Limit post

50—elastic parts 60—Sealing plate 61—Sealing block

100—knife head assembly 200—Handle assembly.

Embodiments of the invention

Hereinafter, embodiments of the present application will be described in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to FIGS. 1 to 9 are exemplary and are intended to explain the present application, and should not be construed as limiting the present application.

In the description of this application, it needs to be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", The orientations or positional relationships indicated by "horizontal", "top", "bottom", "inside", "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing this application and simplifying the description, rather than The indicated or implied device or element must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on this application.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as “first” and “second” may explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality" is two or more, unless specifically defined otherwise.

In this application, the terms "installation," "connected," "connected," and "fixed" should be broadly understood unless otherwise specified and limited. For example, they can be fixed connections or removable connections. , Or integrated; it can be mechanical or electrical connection; it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the internal connection of the two elements or the interaction between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific situations.

As shown in FIGS. 1 to 3, a coupling structure provided in the embodiments of the present application is applicable to personal care products such as shaving devices, and the personal care products may also be trimmers, beauty instruments, and the like. The coupling structure includes a first coupling member 10 and a second coupling member 20, and the first coupling member 10 and the second coupling member 20 may be respectively disposed on the cutter head assembly 100 and the handle assembly 200 of a personal care product (see FIGS. 8 to 9). In order to enable the cutter head assembly 100 and the handle assembly 200 to be connected or separated. The first coupling member 10 and the second coupling member 20 may be used as one of the cutter head assembly 100 or the handle assembly 200 in a personal care product, or may be additionally added so that the cutter head assembly 100 and the handle assembly 200 can be connected. Or separate add parts.

Among them, as shown in FIG. 2, the first coupling member 10 and the second coupling member 20 may be provided with perforations corresponding to the positions, and through the perforations, the cutter head assembly 100 and other components of the handle assembly 200 may be installed or penetrated. For example, the perforation can be used for the arrangement and installation of the rotating shaft, the connecting shaft 11, the knife seat and other components. The specific method is to select different structural designs according to different personal care products.

Further, at least one of the first and second coupling members 10 and 20 is provided with a connection shaft 11, and the other of the first and second coupling members 10 and 20 is provided with a connection cavity 21, that is, the first coupling The component 10 is provided with a connecting shaft 11, and the second coupling component 20 is provided with a connecting cavity 21; or, the first coupling component 10 is provided with a connecting cavity 21 and the second coupling component 20 is provided with the connecting shaft 11. In this embodiment, the first coupling component is provided. 10 is provided with a connection shaft 11, and the second coupling member 20 is provided with a connection cavity 21 as an example.

As shown in Figures 1 to 3, the shape of the connecting shaft 11 is compatible with the shape of the connecting cavity 21 and can be connected or separated from each other; the connecting shaft 11 and the connecting cavity 21 can be compatible with each other to ensure that the connecting shaft 11 and the connecting cavity 21 are suitable. After the connection is made, there will be no shaking or rotation that affects the use of the product, and the connection shaft 11 and the connection cavity 21 after the connection is completed can be disassembled and separated under the action of external force.

Further, as shown in FIGS. 1 to 2, the direction of connection or separation between the connection shaft 11 and the connection cavity 21 is defined as the axial direction, and the axial centerline is the center axis P. All the above or below The mentioned central axis P is based on the reference, and the direction perpendicular to the axial direction is defined as the radial direction. Wherein, the connecting shaft 11 is provided with at least two convex buckles 30 protruding in the radial direction, and the connecting cavity 21 is provided with a position corresponding to each of the convex buckles 30 and capable of sliding in the radial direction and the front end protruding into the connecting cavity 21. Each of the lock buckles 40 is provided with an elastic member 50 for forcing the lock buckle 40 to slide toward the connection cavity 21. The elastic member 50 disposed on the lock buckle 40 can lock the lock buckle after installation by its own elastic force. 40 applies an elastic force, and the installation direction of the elastic member 50 is perpendicular to the direction of the central axis P, that is, it is consistent with the radial direction, and the elastic member 50 may form a direct or indirect connection with the lock 40, or may be used. The middle parts are connected, so that the elastic force applied by the elastic member 50 makes the buckle 40 always have a tendency to move along the radial direction. Then, when the connecting shaft 11 is inserted into the connecting cavity 21 along the axial direction, the male buckle 30 forces the corresponding locking buckle 40 to slide radially until it is fastened with the locking buckle 40, and the locked buckle 40 and the male buckle after being fastened to each other. 30 can also be achieved to restrict the first coupling member 10 and the second coupling member 20 from rotating about the central axis P as a center, so that the stability of the buckle between the buckle 40 and the male buckle 30 is also indirectly maintained, and the design is clever and practical. .

After the buckle 30 corresponding to the position of the buckle 40 is fastened in the direction of the central axis P, it is ensured that the buckle 30 and the buckle 40 are on the central axis P without external force. Avoid relative displacement in the direction of.

As shown in FIGS. 1 to 3, the specific connection and separation of the coupling structure is realized as follows: the first connection member 10 and the second connection member 20 are mutually connected or separated by the mutual connection between the connection shaft 11 and the connection cavity 21. The connection or separation is achieved, and the mutual connection or separation between the connection shaft 11 and the connection cavity 21 is achieved by the fastening between the lock 40 and the male buckle 30, wherein the fastening between the male 30 and the lock 40 is When the connecting shaft 11 is inserted into the connecting cavity 21, the male buckle 30 presses and forces the locking buckle 40 to slide radially. As the depth of the connecting shaft 11 inserted into the connecting cavity 21 increases, the male buckle 30 is released from the pressure on the locking buckle 40, and at the same time Under the action of the elastic force of the elastic member 50 disposed on the lock buckle 40, the lock buckle 40 slides toward the connection cavity 21 and restrains the male buckle 30, so that the male buckle 30 and the lock buckle 40 are fastened together. Because the convex buckle 30 and the lock buckle 40 are connected or separated by forcing the lock buckle 40 to move in the radial direction, the elastic member 50 used to force the lock buckle 40 to move radially is independent and has elastic force. Components, which are not achieved by the deformation of the lock 40 itself, it can effectively ensure that the first coupling member 10 and the second coupling member 20 are frequently assembled and disassembled, and the elastic member 50 can maintain the due elastic force, thereby ensuring the first When the coupling state between the one coupling member 10 and the second coupling member 20 is changed, the stable coupling state can always be maintained.

That is, the assembling and disassembling between the first coupling member 10 and the second coupling member 20 in the coupling structure in this embodiment will not cause fatigue of the local structure and affect its performance. For example, the elastic member 50 is used for a long time. In the process, the elastic force can still be guaranteed, that is, an elastic force can be always applied to enable the buckle 40 to stably engage with the male buckle 30. Preferably, the elastic member 50 may be a tubular spring. The lock buckle 40 and the male buckle 30 will not deform during the specific use process. Therefore, there is no need to worry about the performance of the lock buckle 40 or the male buckle 30 decreasing with the use of time, which will affect the first coupling member 10 and the first coupling member. Stable connection of the two coupling members 20.

Of course, in other embodiments, the elastic member 50 may also be a plastic elastic member, as long as sufficient elastic force is used to force the lock 50 to always have a force toward the connection cavity 21, and once the plastic elastic member is compressed by the lock, After removing the force of the compressed plastic elastic member, it can quickly recover and force the latch 50 to protrude into the connection cavity 21 again.

The connection method of the coupling structure in this embodiment is easy to implement. During the installation process, as long as the connection shaft 11 is inserted into the connection cavity 21, a certain pressure is applied to force the lock 40 to slide in the radial direction through the convex buckle 30 to achieve the connection. ; In the disassembly process, the main force is mainly applied to the connecting shaft 11 and pulled out in the axial direction. The convex buckle 30 can be used to force the buckle 40 to slide in the radial direction to achieve separation. It has the advantage of easy operation and will not be laborious during use. Easy and free.

Preferably, as shown in FIG. 2 and FIGS. 4 to 5, two convex buckles 30 are provided on the connecting shaft 11, and the two convex buckles 30 are symmetrically arranged in the radial direction. Accordingly, two locks are provided on the connection cavity 21. The buckle 40 is disposed symmetrically in the radial direction. In this way, on the one hand, it can be ensured that the relative rotation of the first coupling member 10 and the second coupling member 20 can be prevented by the locking buckle 40 and the male buckle 30 that are fastened to each other; on the other hand, the first coupling member 10 and the second coupling member can be ensured. 20 Stability after connection, no looseness will occur in local locations, at the same time, the number of locks 40 and male buckles 30 is also minimally set, which reduces the complexity of the coupling structure, reduces the structure, and is easy to manufacture.

Of course, in other embodiments, the connecting shaft 11 is provided with three or more convex buckles 30, and is arranged at equal intervals around the circumferential direction of the connecting shaft 11. Correspondingly, the number and position of the connecting cavity 21 and The locking buckles 40 corresponding to each of the male buckles 30 can also ensure that the first coupling member 10 can be frequently assembled and disassembled with the second coupling member 20 without affecting the stability after connection.

In this embodiment, as shown in FIGS. 1 to 3, the connecting shaft 11 is provided with at least one trimming plane 12, and the connecting cavity 21 is provided with the trimming planes 12 to restrict the connecting shaft 11 in the connecting cavity 21. The limiting plane 22 is rotated about the central axis P as a center. At least one cutting edge plane 12 and one limiting plane 22 of the coupling structure in the connected state are arranged to face each other. Then when there is an external force forcing the first coupling member 10 and the second coupling member 20 to rotate relative to each other with the central axis P as the central axis, the limiting plane 22 and the trimming plane 12 can restrict each other, preventing the first coupling member 10 and the second coupling The component 20 is relatively rotated, so that the relative rotation of the first coupling component 10 and the second coupling component 20 may be prevented, which may affect the connection stability between the two or damage local components on the first coupling component 10 and the second coupling component 20.

Preferably, as shown in FIG. 2, the shape of the connecting shaft 11 and the connecting cavity 21 is a circular structure, the cutting edge plane 12 may be formed on the outer wall of the connecting shaft 11, and the limiting plane 22 may be formed on the inner wall of the connecting cavity 21.

More preferably, as shown in FIGS. 6 to 7, the number of the cutting edge planes 12 is two, and the two cutting edge planes 12 are radially symmetrically arranged. Similarly, the number of the limiting planes 22 is also two, and The two limiting planes 22 are arranged symmetrically in the radial direction. In this way, after the circular connecting shaft 11 and the connecting cavity 21 are respectively provided with two cutting edge planes 12 and two limiting planes 22, they form a rounded rectangular shape similar to a stadium (playground) shape.

In this embodiment, as shown in FIG. 3, at least one convex button 30 is disposed on a cutting edge plane 12, preferably, each convex edge plane 12 is provided with a convex button 30, and each limit plane 22 is provided. A lock buckle 40 is provided with the cutting edge plane 12 to increase the space area of the outer wall of the connecting shaft 11 at the position of the cutting edge plane 12, which provides an installation space for the convex buckle 30 to be more easily arranged. In the same way, at least one lock 40 is disposed on a limiting plane 22, and the setting of the limiting plane 22 allows the space area of the inner wall of the connecting cavity 21 to be increased at the position of the limiting plane 22, which provides a space for setting the lock 40. It is easier to arrange the installation space of the lock 40. In addition, the provided cutting edge plane 12 corresponds to the limiting plane 22. When the connecting shaft 11 needs to be inserted into the connecting cavity 21, the cutting edge plane 12 and the limiting plane 22 achieve a predetermined position. By aligning with the limiting plane 22, the alignment between the completed buckle 30 and the lock buckle 40 can be completed, and when the convex shaft 30 and the lock buckle 40 need not be individually matched, the connection shaft 11 can be kept inserted into the connection cavity 21, The convex buckle 30 and the lock buckle 40 can be finally fastened.

In this embodiment, as shown in FIG. 2, a lower limit area 41 for receiving the convex buckle 30 is formed between the front end of the locking buckle 40 protruding into the connecting cavity 21 and the bottom of the connecting cavity 21. The lower limit area 41 is mainly used to limit the displacement of the male buckle 30 in the axial direction. The limit height of the lower limit area 41 is the distance between the lower end surface of the lock 40 and the bottom wall of the connection cavity 21. When the connecting shaft 11 is completely inserted into the connecting cavity 21, the male buckle 30 is accommodated in the lower limit area 41, and the limiting height of the lower limit area 41 is slightly larger than the thickness between the upper end surface and the lower end surface of the male buckle 30. In this way, the lower limit area 41 can just fit the receiving buckle 30, the lower end face of the lock buckle 40 is used to restrict the upper end face of the convex buckle 30, and the bottom wall of the connection cavity 21 is used to restrict the lower end face of the convex buckle 30. The convex buckle 30 is prevented from being displaced in the axial direction (toward the lower end surface of the lock buckle 40 or to the bottom wall of the connection cavity 21) without receiving an external force.

Further, as shown in FIG. 2, the connecting shaft 11 is provided with an upper limit area 31 located above the male buckle 30 and configured to accommodate the front end of the locking buckle 40 protruding into the connecting cavity 21. The upper limit area 31 is mainly used to limit the displacement of the buckle 40 in the axial direction. The distance between the upper end surface of the height-limiting tab 30 of the upper-limit area 31 and the step surface formed above the flange 30 after the trimming plane 12 is provided on the connecting shaft 11. When the connecting shaft 11 is completely inserted into the connecting cavity 21, the lock catch 40 is accommodated in the upper limit area 31, and the limit height of the upper limit area 31 is slightly larger than the thickness between the upper end face and the lower end face of the lock catch 40. The upper limit area 31 can just fit the lock buckle 40, the upper end surface of the convex buckle 30 is used to limit the lower end face of the lock buckle 40, and the connecting shaft 11 is provided with a cutting plane 12 formed on the step surface above the convex buckle 30. It is used to limit the upper end face of the lock buckle 40, so as to prevent the lock buckle 40 from appearing axially without being subjected to external forces (the upper buckle 30 is formed toward the upper end face of the convex buckle 30 or the connecting shaft 11 is provided with the trimming plane 12 and is located on the convex buckle 30 above the step surface).

As shown in FIG. 2, the upper limit area 31 and the lower limit area 41 are provided, so that the lock buckle 40 and the convex buckle 30 are engaged with each other to form an engaged state, similar to the engagement between a female buckle and a male buckle in a zipper. The connection stability is very good. Without being affected by the axial external force, there is no need to worry about the disconnection of the locking buckle 40 from the male buckle 30, so that the stability of the first coupling member 10 and the second coupling member 20 after the connection is completed can be achieved. Effective protection.

At the same time, the setting of the upper limit area 31 and the lower limit area 41 also has a function of prompting whether the connection shaft 11 and the connection cavity 21 are connected in place. When the connection shaft 11 is inserted into the connection cavity 21, as the depth of the connection shaft 11 inserted into the connection cavity 21 is continuously applied, it can be judged by the touch whether the convex buckle 30 abuts the lower limit of the lower limit area 41 (that is, The bottom wall of the connecting cavity 21), while applying an axial force of the connecting shaft 11 in the opposite direction, it can be judged by the touch whether the convex buckle 30 abuts the upper limit of the lower limit area 41 (ie, the lower end surface of the lock 40), It is determined whether the connection shaft 11 and the connection cavity 21 are adapted to be connected in place.

Of course, during the above-mentioned operation, it can also be judged through the feel of the lock 40 whether the abutment 40 abuts on the lower limit of the upper limit area 31 (the upper end surface of the convex buckle 30), and the axial force of the connecting shaft 11 is applied in the opposite direction Feeling to determine whether the lock 40 abuts the upper limit of the upper limit area 31 (ie, the stepped surface above the convex buckle 30 formed after the connecting shaft 11 is provided with the cutting edge plane 12) to determine whether the connecting shaft 11 and the connecting cavity 21 are Adapter connection in place.

In addition, the upper limit area 31 and the lower limit area 41 are set using the limit plane 22 and the trimming plane 12, respectively, without the need for independent design, avoiding structural complexity, and effectively optimizing the advantages of the original structure. The upper limit area 31 and the lower limit area 41.

Preferably, as shown in FIGS. 4 to 5, each of the male buckle 30 and each of the lock buckles 40 has a wedge shape, that is, the front end of the male buckle 30 has a certain tapered tip, and the front end of the lock buckle 40 also has a certain tapered tip. After the male buckle 30 having a wedge-shaped structure and the locking buckle 40 having a wedge-shaped structure are fastened to each other, after the axial force is applied, the male buckle 30 can be forced to be separated from the locking buckle 40, so that the locking buckle 40 and the male buckle can be separated. Removable connection between 30.

In this embodiment, as shown in FIG. 2 and FIGS. 4 to 5, the upper end and the lower end of each front end of each latch 40 protruding into the connection cavity 21 are provided with a chamfered arc surface 42 along the central axis P. Specifically, the setting of the chamfered arc surface 42 on the lock buckle 40 is mainly used to reduce the frictional force when the cam buckle 30 is in contact with the convex buckle 30 and is to be axially displaced from each other. When the connecting shaft 11 is inserted into the connecting cavity 21, the male buckle 30 abuts on the upper end face of the locker 40 and continues to apply a force. The male buckle 30 presses the upper end face of the locker 40 to force the locker 40 to slide radially. Then, under the action of the chamfered arc surface 42, it is easier for the convex buckle 30 and the chamfered arc surface 42 to slide to each other, and then it is easier to force the buckle 40 to compress the elastic member 50 to achieve radial displacement until the connecting shaft 11 is inserted into The connection cavity 21 is connected to the connection cavity 21. When it is necessary to separate the connection between the connection shaft 11 and the connection cavity 21. Apply the connection shaft 11 to the outside. Similarly, at this time, the upper end surface of the convex buckle 30 on the connection shaft 11 is in contact with the lower end surface of the lock buckle 40, and the lock buckle 40 is forced to slide radially, so it is still on the chamfered arc surface. The effect of 42 makes it easier for the convex buckle 30 and the chamfered arc surface 42 to slide with each other, and then it is easier to force the buckle 40 to compress the elastic member 50 to achieve radial displacement until the connecting shaft 11 is completely pulled out of the connecting cavity 21, The connection shaft 11 is separated from the connection cavity 21.

That is, the chamfered arc surface 42 is provided on the upper and lower end surfaces of the front end of the locking protrusion 40 protruding into the connection cavity 21, which is beneficial to the connection and separation operation between the connection shaft 11 and the connection cavity 21. Improve the convenience of use, and strong practicality.

In other embodiments, at least one of the convex buckle 30 and the lock buckle 40 has a rectangular structure, and the other of the convex buckle 30 and the lock buckle 40 has a rectangular structure. It is a round head structure. In this way, the convex buckle 30 and the lock buckle 40 corresponding to each other can also be realized.

In this embodiment, the materials of the lock buckle 40 and the convex buckle 30 can be freely selected according to needs and different products, for example, they can be plastic parts or metal parts.

In this embodiment, preferably, as shown in FIG. 6, each male buckle 30 is integrally formed on the connecting shaft 11. When the molded connecting shaft 11 is manufactured, the molded male buckle 30 is also manufactured, that is, the male buckle 30 and the connecting shaft 11 are an integrated structure. This structural design can effectively improve the stability of the male buckle 30. Even if the connecting shaft 11 has a small volume, the structure of the male buckle 30 can still be ensured, and the structural design can also ensure that the use and performance of the male buckle 30 will not be affected when the axial setting of the connecting shaft 11 is empty.

Specifically, when the connecting shaft 11 is injection-molded from a plastic material, the male buckle 30 is also integrally injection-molded.

Wherein, as shown in FIG. 2, FIG. 5 and FIG. 7, the first coupling member 10 or the second coupling member 20 provided with the connection cavity 21 is also provided with a mounting cavity 23. In this embodiment, the second coupling member 20 is simultaneously used. The connection cavity 21 and the installation cavity 23 are provided as an example for description. The mounting cavity 23 is located on the side of the connection cavity 21 and communicates with the connection cavity 21 through a passage hole 24. The passage hole 24 is provided inside the second coupling member 20, and the passage hole 24 is located between the installation cavity 23 and the connection cavity 21. At the same time, the extending direction of the channel hole 24 is radial. The lock 40 is slidably connected to the channel hole 24. The lock 40 has at least a component structure located in the channel hole 24. The size of the inner ring is adapted to ensure that the buckle 40 can slide in the radial direction in the passage hole 24 as a standard. The elastic member 50 abuts between the rear end of the buckle 40 and the inner wall of the mounting cavity 23. That is, one end of the elastic member 50 abuts against the inner wall of the radial distal end in the mounting cavity 23, and the other end of the elastic member 50 abuts against the rear end of the lock buckle 40 (projecting to the connection cavity 21 with respect to the lock buckle 40) front end). In this way, the elastic member 50 can always exert an elastic force on the lock buckle 40, forcing the lock buckle 40 to always slide toward the connecting cavity 21, and the lock buckle 40 is not forced by the convex buckle 30 to use a part structure (such as a lock The front end of the buckle 40 extends into the connecting cavity 21, so as to ensure that when the connecting shaft 11 is completely inserted into the connecting cavity 21, the lock buckle 40 is adapted to be accommodated in the upper limit area 31.

When the length of the lock buckle 40 is long, the length of the lock buckle 40 can be used to restrict the lock buckle 40 from sliding into the connection cavity 21 completely from the passage hole 24 at all times. For example, when the length of the lock buckle 40 is greater than the longest length of the relative position of the inner wall of the connection cavity 21, the lock buckle 40 cannot fully slide into the connection cavity 21. The lock buckle 40 may also have a partially deformed structural shape to restrict the lock buckle 40 from sliding into the connection cavity 21 from the connection channel.

When the length of the buckle 40 is short, a protrusion 43 perpendicular to the central axis P is provided on the side of the rear end of the buckle 40 for abutting against the inner wall of the mounting cavity 23 to limit the buckle 40 to the passage hole 24. The middle slides completely into the connecting cavity 21. Specifically, when the elastic member 50 applies a sufficient force to force the buckle 40 to slide toward the connecting cavity 21, the convex buckle 30 provided at the rear end of the buckle 40 will abut against the inner wall where the mounting cavity 23 and the channel meet. The inner wall of the mounting cavity 23 restricts the latch 40 from further sliding into the connection cavity 21, so as to ensure that the connection cavity 21 does not slip into the connection cavity 21.

This design can ensure that the lock buckle 40 will not fall off after installation. Frequent use makes the lock buckle 40 slide frequently in the channel hole 24 and will not fall off. The structure is clever and practical.

Preferably, as shown in FIGS. 4 to 5, there are two bumps 43, and the two bumps 43 are opposite to each other (the two bumps 43 extend in opposite directions and extend on the same straight line), so that two The position of the lock buckle 40 is restricted in position to prevent it from sliding into the connection cavity 21 completely.

Preferably, the lock buckle 40 is integrally injection-molded by a plastic material, and the projection 43 and the lock buckle 40 are integrally injection-molded.

Further, as shown in FIG. 2 and FIGS. 4 to 5, the rear end of the lock 40 is further provided with a limiting post 44, and the elastic member 50 is sleeved outside the limiting post 44. The limit post 44 is designed for 50 sets of elastic members. The elastic member 50 is preferably a tubular spring. The spring is sleeved in the limit post 44. By the limit of the limit post 44, the spring is compressed or the elastic force is deformed. During the process, they are deformed along the axial direction of the limiting post 44. On the one hand, it ensures that when the spring is compressed, it will not spring away from the installation position due to deformation. On the other hand, it ensures that the elastic force is restored after compression. The elastic force on the buckle 40 always causes the buckle 40 to slide radially in the channel hole 24, so that the front end of the buckle 40 protrudes into the connection cavity 21, so that the buckle 40 can communicate with the connecting shaft 11 The male buckle 30 realizes buckling.

Preferably, the limiting post 44 is also integrally injection-molded with the latch 40. The limiting post 44 extends along the length direction of the latch 40.

In this embodiment, as shown in FIGS. 2 and 4 to 5, the mounting cavity 23 is an open mouth, and the open mouth has an open opening. That is, an open opening is formed in the installation cavity 23, and the arrangement of the open opening facilitates the assembly of the lock 40 and the elastic member 50. In specific assembly, the lock 40 can be set outside the limit post 44 in the open opening. The elastic member 50 is placed in the installation cavity 23, and the front end of the lock buckle 40 protrudes into the connection cavity 21 in the passage hole 24 to facilitate the installation and arrangement of the lock buckle 40 and the elastic member 50.

Further, as shown in FIG. 2 and FIGS. 4 to 5, a sealing block 61 is sealed at the open opening, and the sealing block 61 can closely fit (interference fit) with the open opening to block the installation cavity 23 so that the installation cavity A closed cavity structure is formed in 23 to ensure that the elastic member 50 and the buckle 40 do not come out of the open opening.

Further, as shown in FIG. 2, FIG. 4 to 5 and FIG. 7, when the mounting cavity 23 has two or more, a sealing and fixing plate 60 may be provided, and then the sealing and fixing plate 60 is provided at a position corresponding to each The sealing block 61 at the position of the mounting cavity 23, so that a single sealing and fixing plate 60 can be used to ensure that the open openings of the plurality of mounting cavities 23 are completely sealed.

Preferably, as shown in FIG. 2, the open opening of the mounting cavity 23 is provided at the bottom of the mounting cavity 23, since the connection shaft 11 is preferably disposed above the connection cavity 21, that is, the first coupling member 10 is located above the second coupling member 20, Then, designing the opening of the mounting cavity 23 in this way can prevent the sealing block 61 from being interfered by the first coupling member 10,

The embodiment of the present application also provides a shaving device. As shown in FIGS. 8 to 9, the shaving device includes a cutter head assembly 100 and a handle assembly 200. The cutter head assembly 100 is a component for realizing work, and the handle assembly 200 is for holding. As well as components that provide electric or power supply mounting. Further, the cutter head assembly 100 includes at least one first coupling member 10 or second coupling member 20 in the aforementioned coupling structure, and the handle assembly 200 includes another first coupling member 10 or second coupling in the aforementioned coupling structure. The component 20, the cutter head assembly 100, and the handle assembly 200 are connected or separated through connection or separation between the first coupling member 10 and the second coupling member 20.

Since the shaving device of the embodiment of the present application uses the above-mentioned coupling structure, even if the cutter head assembly 100 and the handle assembly 200 are frequently attached and detached, the elastic member 50 in the coupling structure can still be used to ensure the first coupling member 10 and the first coupling member 10 When the two coupling members 20 are in a connected state, the cutter head assembly 100 and the handle assembly 200 can be maintained in a stable connected state all the time, and the entire assembly and disassembly operation is very convenient and practical.

In other embodiments, personal care products such as trimmers and beauty instruments may also include the above-mentioned coupling structure to ensure that the blade head assembly 100 and handle assembly 200 of the personal care product can be frequently installed and removed without affecting Stability of the connection between the cutter head assembly 100 and the handle assembly 200.

The above description is only the preferred embodiments of this application, and is not intended to limit this application. Any modification, equivalent replacement, and improvement made within the spirit and principle of this application shall be included in the protection of this application. Within range.

Claims

A coupling structure includes a first coupling member and a second coupling member, characterized in that at least one of the first coupling member and the second coupling member is provided with a connecting shaft, the first coupling member and the The other one of the second coupling members is provided with a connection cavity, and the shape of the connection shaft is adapted to the shape of the connection cavity and can be connected or separated from each other; At least two convex buckles, the connecting cavity is provided with a locking buckle corresponding to the position of each of the convex buckles and capable of sliding in the radial direction and the front end protrudes into the connecting cavity, and each of the locking buckles is configured to be useful When the locking member is forced to slide toward the connecting cavity, when the connecting shaft is inserted into the connecting cavity, the convex button forces the corresponding locking button to slide radially until it reaches the locking button. Pick up.
The coupling structure according to claim 1, characterized in that: the connecting shaft is provided with at least one cutting edge plane, and the connecting cavity is provided with a cooperation with each of the cutting edge planes and is used to restrict the connecting shaft to A limiting plane that rotates around a central axis in the connecting cavity.
The coupling structure according to claim 2, characterized in that at least one of the male buckles is provided on one of the trimming planes, and at least one of the lock buckles is provided on one of the limiting planes.
The coupling structure according to claim 1, wherein a lower limit position for accommodating the convex buckle is formed between a front end of the locking buckle protruding into the connecting cavity and a bottom of the connecting cavity. Area.
The coupling structure according to claim 1, characterized in that: the connecting shaft is provided with an upper limit area located above the convex buckle and used for accommodating the front end of the locking buckle protruding into the connecting cavity. .
The coupling structure according to claim 1, wherein each of the male buckles and each of the lock buckles has a wedge shape.
The coupling structure according to claim 1, wherein the upper end and the lower end of the front end of each locking protrusion protruding into the connection cavity are provided with a chamfered arc surface along the central axis.
The coupling structure according to claim 1, wherein each of the male buckles is integrally formed on the connecting shaft.
The coupling structure according to any one of claims 1 to 8, characterized in that: the first coupling member or the second coupling member provided with the connection cavity is further provided with a mounting cavity, and the mounting cavity is located at The side of the connection cavity communicates with the connection cavity through a passage hole, the lock is slidably connected to the passage hole, the elastic member abuts the rear end of the lock and the installation Between the inner walls of the cavity.
The coupling structure according to claim 9, characterized in that: the rear end of the lock buckle is provided for abutting with an inner wall of the mounting cavity to restrict the lock buckle from completely sliding into the passage hole. Connect the bumps in the cavity.
The coupling structure according to claim 9, wherein the rear end of the lock buckle is further provided with a limiting post, and the elastic member is sleeved outside the limiting post.
The coupling structure according to claim 9, wherein the mounting cavity is an open mouth, and a sealing block is sealed at the open opening of the open mouth.
A shaving device includes a cutter head assembly and a handle assembly, wherein the cutter head assembly includes at least one of the first coupling member or the second coupling member in the coupling structure according to claims 1 to 12. A coupling member, the handle assembly includes another one of the first coupling member or the second coupling member in the coupling structure according to claims 1 to 12, and the cutter head assembly and the handle assembly pass through the first The connection or disconnection between a coupling member and the second coupling member realizes the connection or disconnection.