Connecting structure and shaving device

Abstract

The present invention provides a connection structure and a shaving device, wherein the connection structure includes a first connection component and a second connection component, wherein the first connection component is provided with a connection shaft, and the second connection component is provided with a connection cavity whose shape matches the connection shaft; the connection shaft is provided with at least two protrusions, and the connection cavity is provided with a lock corresponding to the position of each protrusion and capable of sliding radially and with the front end protruding into the connection cavity, and each lock is provided with an elastic member for forcing the lock to slide toward the connection cavity, and when the connection shaft is inserted into the connection cavity, the protrusion forces the corresponding lock to slide radially until it is engaged with the lock. The elastic member can maintain the proper elastic force, thereby ensuring that the first connection component and the second connection component can always maintain a stable connection state.

Description

Technical Field

[0001] The invention belongs to the technical field of personal care products, and in particular relates to a connecting structure and a shaving device. Background Art

[0002] Personal care products, such as shaving devices, generally include a blade head and a handle, and the blade head and the handle are often detachably connected by a buckle connection between a connecting buckle plate and a buckle plate base. However, in the existing buckle connection method, if the shaving device is used for a long time, the connecting buckle plate will weaken due to fatigue, and thus cannot maintain a stable buckle connection with the buckle plate base, resulting in a shortened service life of the shaving device. Therefore, it is necessary to provide a new connection structure to improve the ability of personal care products such as shaving devices to maintain a stable connection state during frequent assembly and disassembly. Summary of the invention

[0003] The object of the present invention is to provide a connection structure and a shaving device, aiming to solve the technical problem in the prior art that personal care products such as shaving devices cannot maintain a stable connection state during frequent assembly and disassembly.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a connecting structure, including a first connecting component and a second connecting component, at least one of the first connecting component and the second connecting component is provided with a connecting shaft, and the other of the first connecting component and the second connecting component is provided with a connecting cavity, the shape of the connecting shaft is adapted to the shape of the connecting cavity and can be connected or separated from each other; at least two radially protruding buckles are provided on the connecting shaft, and the connecting cavity is provided with a lock buckle corresponding to the position of each of the buckles and can slide radially and the front end of which protrudes into the connecting cavity, and each of the lock buckles is provided with an elastic member for forcing the lock buckle to slide toward the connecting cavity, and when the connecting shaft is inserted into the connecting cavity, the buckle forces the corresponding lock buckle to slide radially until it is buckled with the lock buckle.

[0005] Beneficial effects of the present invention: In the connection structure of the present invention, the mutual connection or separation between the first connection component and the second connection component is realized by the mutual connection or separation between the connection shaft and the connection cavity, and the mutual connection or separation between the connection shaft and the connection cavity is realized by the buckle connection between the lock buckle and the convex buckle, wherein the buckle connection between the convex buckle and the lock buckle is that when the connection shaft is inserted into the connection cavity, the convex buckle presses and forces the lock buckle to slide radially, and as the depth of the connection shaft inserted into the connection cavity increases, the convex buckle is separated from the pressure on the lock buckle, and at the same time, under the elastic force of the elastic member configured on the lock buckle, the lock buckle slides toward the connection cavity and restricts the convex buckle, so that the buckle connection between the convex buckle and the lock buckle is realized. Since the connection or separation between the convex buckle and the lock buckle is realized by forcing the lock buckle to move radially, and the elastic member used in forcing the lock buckle to move radially is an independent member with elastic force, which is not realized by the deformation of the lock buckle itself, it can effectively ensure that the first connection component and the second connection component are frequently assembled and disassembled, and the elastic member can maintain the proper elastic force, thereby ensuring that the first connection component and the second connection component can always maintain a stable connection state when they are in a connected state. Moreover, the connection method of this connection structure is easy to implement. During the installation process, the connection can be achieved by applying a certain pressure when the connecting shaft is inserted into the connecting cavity to force the lock buckle to slide radially through the convex buckle; during the disassembly process, the force is mainly applied to the connecting shaft to pull it out axially, and the separation can be achieved by forcing the lock buckle to slide radially through the convex buckle.

[0006] Another technical solution adopted by the present invention is: a shaving device, including a cutter head assembly and a handle assembly, the cutter head assembly includes at least one of the first connecting part or the second connecting part in the above-mentioned connecting structure, the handle assembly includes another of the first connecting part or the second connecting part in the above-mentioned connecting structure, and the cutter head assembly and the handle assembly are connected or separated by the connection or separation between the first connecting part and the second connecting part.

[0007] The shaving device of the present invention uses the above-mentioned connection structure. Therefore, even if the cutter head assembly and the handle assembly are frequently assembled and disassembled, the elastic member in the connection structure can still be relied on to ensure that the first connection part and the second connection part are in a connected state, thereby enabling the cutter head assembly and the handle assembly to always maintain a stable connection state. In addition, the entire assembly and disassembly operation is very convenient and highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0009] Figure 1 A schematic diagram of the structure of a connection structure provided in an embodiment of the present invention.

[0010] Figure 2 For along Figure 1 Sectional view along line AA.

[0011] Figure 3 Schematic diagram of the connection structure provided by the embodiment of the present invention Figure 1 .

[0012] Figure 4 Schematic diagram of the connection structure provided by the embodiment of the present invention Figure 2 .

[0013] Figure 5 Schematic diagram of the connection structure provided by the embodiment of the present invention Figure 3 .

[0014] Figure 6 A schematic structural diagram of a first connecting component of a connecting structure provided in an embodiment of the present invention.

[0015] Figure 7 A schematic structural diagram of a second connecting component of a connecting structure provided in an embodiment of the present invention.

[0016] Figure 8 A cross-sectional view of a shaving apparatus according to an embodiment of the present invention.

[0017] Fig. 9 This is a schematic diagram of the structural decomposition of a shaving device provided in an embodiment of the present invention.

[0018] Among them, the reference numerals in the figure are:

[0019] 10 - first connecting part 11 - connecting shaft 12 - cutting edge plane

[0020] 20—Second connecting part 21—Connecting cavity 22—Limiting plane

[0021] 23—installation cavity 24—channel hole 30—convex buckle

[0022] 31—upper limit area 40—lock 41—lower limit area

[0023] 42 - chamfered arc surface 43 - bump 44 - limit column

[0024] 50—elastic member 60—sealing fixing plate 61—sealing block

[0025] 100—Blade head assembly 200—Handle assembly. DETAILED DESCRIPTION

[0026] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. Figures 1 to 9 The described embodiments are exemplary and intended to be used to explain the present invention, but should not be construed as limiting the present invention.

[0027] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. 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 invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0029] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it 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 the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] like Figures 1 to 3 As shown, a connection structure provided by an embodiment of the present invention is applicable to personal care products such as shaving devices, and personal care products may also be trimmers, beauty devices, etc. The connection structure includes a first connection component 10 and a second connection component 20, and the first connection component 10 and the second connection component 20 may be respectively configured on a cutter head assembly 100 and a handle assembly 200 of the personal care product (see Figures 8-9), so that the blade assembly 100 and the handle assembly 200 can be connected or separated. The first connecting component 10 and the second connecting component 20 can be used as a component of the blade assembly 100 or the handle assembly 200 in the personal care product, or can be an additional component added to enable the blade assembly 100 and the handle assembly 200 to be connected or separated.

[0031] Among them, Figure 2 As shown, corresponding through holes can be set on the first connecting component 10 and the second connecting component 20 to communicate with each other, and other components of the blade head assembly 100 and the handle assembly 200 can be installed or passed through the through holes. For example, the through holes can be used for the arrangement and installation of components such as the rotating shaft, the connecting shaft 11, and the blade seat. Different structural designs are selected according to different personal care products.

[0032] Further, at least one of the first connecting component 10 and the second connecting component 20 is provided with a connecting shaft 11, and the other one of the first connecting component 10 and the second connecting component 20 is provided with a connecting cavity 21, that is, the first connecting component 10 is provided with the connecting shaft 11, and the second connecting component 20 is provided with the connecting cavity 21; or, the first connecting component 10 is provided with the connecting cavity 21, and the second connecting component 20 is provided with the connecting shaft 11. In this embodiment, the first connecting component 10 is provided with the connecting shaft 11, and the second connecting component 20 is provided with the connecting cavity 21 as an example for description.

[0033] like Figures 1 to 3 As shown, 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 adapted to each other, ensuring that after the connecting shaft 11 and the connecting cavity 21 are adapted and connected, there will be no shaking or rotation that affects the use of the product, and ensuring that the connecting shaft 11 and the connecting cavity 21 after the connection is completed can be disassembled and separated under the action of external force.

[0034] Furthermore, if Figures 1-2As shown, the direction of connection or separation between the connecting shaft 11 and the connecting cavity 21 is defined as the axial direction, and the center line of the axial direction is the central axis P. The central axis P mentioned above or below is based on this, and the direction perpendicular to the axial direction is defined as the radial direction. Among them, the connecting shaft 11 is provided with at least two protruding buckles 30 protruding in the radial direction, and the connecting cavity 21 is provided with lock buckles 40 corresponding to the positions of the protruding buckles 30 and capable of sliding in the radial direction and with the front end protruding into the connecting cavity 21. Each lock buckle 40 is provided with an elastic member 50 for forcing the lock buckle 40 to slide toward the connecting cavity 21. The elastic member 50 configured on the lock buckle 40 can apply an elastic force to the lock buckle 40 after installation through its own elastic force. The installation direction of the elastic member 50 is perpendicular to the direction of the central axis P, that is, consistent with the radial direction, and the elastic member 50 can form a direct or indirect connection with the lock buckle 40, or can be connected by a central component, so that the elastic force applied by the elastic member 50 makes the lock buckle 40 always have a tendency to move in the radial direction. Then, when the connecting shaft 11 is inserted into the connecting cavity 21 along the axial direction, the convex buckle 30 forces the corresponding lock buckle 40 to slide radially until it is engaged with the lock buckle 40. After being engaged with each other, the lock buckle 40 and the convex buckle 30 can also limit the rotation of the first connecting component 10 and the second connecting component 20 around the central axis P, thereby indirectly maintaining the stability of the engagement between the lock buckle 40 and the convex buckle 30. The design is ingenious and practical.

[0035] After the buckle 30 and the corresponding lock buckle 40 are buckled together, they are in vertical contact in the direction of the center axis P. This ensures that the buckle 30 and the lock buckle 40 are not relatively displaced in the direction of the center axis P when no external force is applied.

[0036] like Figures 1 to 3As shown, the specific connection and separation process of the connecting structure is that the mutual connection or separation between the first connecting component 10 and the second connecting component 20 is achieved by the mutual connection or separation between the connecting shaft 11 and the connecting cavity 21, and the mutual connection or separation between the connecting shaft 11 and the connecting cavity 21 is achieved by the buckling connection between the lock buckle 40 and the convex buckle 30, wherein the buckling connection between the convex buckle 30 and the lock buckle 40 is that when the connecting shaft 11 is inserted into the connecting cavity 21, the convex buckle 30 compresses and forces the lock buckle 40 to slide radially, and as the depth of the connecting shaft 11 inserted into the connecting cavity 21 increases, the convex buckle 30 is released from the pressure on the lock buckle 40, and at the same time, under the elastic force of the elastic member 50 configured on the lock buckle 40, the lock buckle 40 slides toward the connecting cavity 21 and restricts the convex buckle 30, so that the buckle 30 and the lock buckle 40 are buckled. Since the connection or separation between the protruding buckle 30 and the locking buckle 40 is achieved by forcing the locking buckle 40 to move radially, and the elastic member 50 used to force the locking buckle 40 to move radially is an independent member with elastic force, and it is not achieved by the deformation of the locking buckle 40 itself, it can effectively ensure that the elastic member 50 can maintain the due elastic force when the first connecting member 10 and the second connecting member 20 are frequently assembled and disassembled, thereby ensuring that the first connecting member 10 and the second connecting member 20 can always maintain a stable connection state when they are in a connected state.

[0037] That is to say, the assembly and disassembly of the first connecting member 10 and the second connecting member 20 in the connecting structure of this embodiment will not cause fatigue of the local structure and affect its performance. For example, the elastic member 50 can still ensure its elastic force during long-term use, that is, it can always apply an elastic force that can enable the lock buckle 40 to achieve stable buckle connection with the convex buckle 30. Preferably, the elastic member 50 can be a tubular spring. The lock buckle 40 and the convex buckle 30 will not be deformed during specific use. Therefore, there is no need to worry that the lock buckle 40 or the convex buckle 30 will deteriorate in performance as the use time increases, thereby affecting the stable connection between the first connecting member 10 and the second connecting member 20.

[0038] Of course, in other embodiments, the elastic member 50 can also be a plastic elastic member, as long as sufficient elastic force is used to force the lock buckle 50 to always maintain a force toward the connecting cavity 21, and the plastic elastic member is compressed by the lock buckle and can quickly recover and force the lock buckle 50 to protrude into the connecting cavity 21 again once the force compressing the plastic elastic member is removed.

[0039] Among them, the connection method of the connecting structure in this embodiment is easy to achieve. During the installation process, the connection can be achieved by applying a certain pressure when the connecting shaft 11 is inserted into the connecting cavity 21 to force the lock buckle 40 to slide radially through the convex buckle 30; during the disassembly process, the main force is applied to the connecting shaft 11 to pull it out axially, and the lock buckle 40 is forced to slide radially through the convex buckle 30 to achieve separation. It has the advantage of easy operation, no effort during use, and it is easy and free.

[0040] Preferably, if Figure 2 and Figures 4-5 As shown, two protruding buckles 30 are arranged on the connecting shaft 11, and the two protruding buckles 30 are arranged symmetrically along the radial direction. Correspondingly, two locking buckles 40 are arranged on the connecting cavity 21, and the two locking buckles 40 are arranged symmetrically along the radial direction. In this way, on the one hand, the locking buckles 40 and the protruding buckles 30 that are mutually engaged can prevent the first connecting component 10 and the second connecting component 20 from rotating relative to each other; on the other hand, the stability of the first connecting component 10 and the second connecting component 20 after being connected can be ensured, and there will be no looseness at a local position. At the same time, the number of locking buckles 40 and protruding buckles 30 is set to a minimum, reducing the complexity of the connecting structure, reducing the structure, and facilitating production and manufacturing.

[0041] Of course, in other embodiments, three or more protrusions 30 are provided on the connecting shaft 11, and are arranged at equal intervals around the circumference of the connecting shaft 11. Correspondingly, lock buckles 40 corresponding in number and position to the protrusions 30 are provided in the connecting cavity 21. Such a design can also ensure that the first connecting component 10 can be frequently assembled and disassembled with the second connecting component 20 without affecting their stability after connection.

[0042] In this embodiment, Figures 1 to 3 As shown, at least one trimming plane 12 is provided on the connecting shaft 11, and a limiting plane 22 is provided on the connecting cavity 21, which cooperates with each trimming plane 12 and is used to limit the connecting shaft 11 from rotating around the central axis P in the connecting cavity 21. The connecting structure in the connected state has at least one trimming plane 12 and one limiting plane 22 facing each other. Then, when there is an external force forcing the first connecting component 10 and the second connecting component 20 to rotate relative to each other around the central axis P, the limiting plane 22 and the trimming plane 12 can limit each other and prevent the first connecting component 10 and the second connecting component 20 from rotating relative to each other, so as to avoid the first connecting component 10 and the second connecting component 20 from rotating relative to each other, thereby preventing the first connecting component 10 and the second connecting component 20 from rotating relative to each other and affecting the connection stability between the two or damaging the local components on the first connecting component 10 and the second connecting component 20.

[0043] Preferably, if Figure 2As shown, the connecting shaft 11 and the connecting cavity 21 are circular structures, the cutting plane 12 can be formed on the outer wall of the connecting shaft 11 , and the limiting plane 22 can be formed on the inner wall of the connecting cavity 21 .

[0044] More preferably, if Figures 6-7 As shown, the number of the trimming planes 12 is two, and the two trimming planes 12 are arranged in radial symmetry. Similarly, the number of the limiting planes 22 is also two, and the two limiting planes 22 are arranged in radial symmetry. In this way, the circular connecting shaft 11 and the connecting cavity 21 are respectively provided with two trimming planes 12 and two limiting planes 22 to form a rounded rectangular shape similar to the shape of a stadium (playground).

[0045] In this embodiment, Figure 3 As shown, at least one convex buckle 30 is arranged on a trimming plane 12. Preferably, a convex buckle 30 is arranged on each trimming plane 12, and a locking buckle 40 is arranged on each limiting plane 22. The setting of the trimming plane 12 increases the spatial area of ​​the outer wall of the connecting shaft 11 at the position of the trimming plane 12, providing an installation space for arranging the convex buckle 30 more easily. Similarly, at least one locking buckle 40 is arranged on a limiting plane 22. The setting of the limiting plane 22 increases the spatial area of ​​the inner wall of the connecting cavity 21 at the position of the limiting plane 22, providing an installation space for arranging the locking buckle 40 more easily. In addition, the trimming plane 12 is set to correspond to the limiting plane 22. When the connecting shaft 11 needs to be inserted into the connecting cavity 21, the trimming plane 12 and the limiting plane 22 are pre-positioned, so that the alignment between the protruding buckle 30 and the locking buckle 40 can be completed as long as the trimming plane 12 and the limiting plane 22 are aligned with each other. Therefore, there is no need to separately correspond the protruding buckle 30 and the locking buckle 40 to keep the connecting shaft 11 inserted into the connecting cavity 21, and the protruding buckle 30 and the locking buckle 40 can finally be buckled.

[0046] In this embodiment, Figure 2As shown, a lower limit area 41 for accommodating the convex buckle 30 is formed between the front end of the lock 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 convex buckle 30 along the axial direction. The limit height of the lower limit area 41 is the distance between the lower end surface of the lock buckle 40 and the bottom wall of the connecting cavity 21. When the connecting shaft 11 is completely inserted into the connecting cavity 21, the convex buckle 30 is accommodated in the lower limit area 41, and the limit height of the lower limit area 41 is slightly greater than the thickness between the upper end surface and the lower end surface of the convex buckle 30. In this way, the lower limit area 41 can just fit the convex buckle 30, the lower end surface of the lock buckle 40 is used to limit the upper end surface of the convex buckle 30, and the bottom wall of the connecting cavity 21 is used to limit the lower end surface of the convex buckle 30, so as to prevent the convex buckle 30 from axial displacement (towards the lower end surface of the lock buckle 40 or towards the bottom wall of the connecting cavity 21) when no external force is applied.

[0047] Furthermore, if Figure 2 As shown, the connecting shaft 11 is provided with an upper limit area 31 located above the convex buckle 30 and used to accommodate the front end of the lock buckle 40 protruding into the connecting cavity 21. The upper limit area 31 is mainly used to limit the displacement of the lock buckle 40 along the axial direction. The limit height of the upper limit area 31 is the distance between the upper end surface of the convex buckle 30 and the step surface above the convex buckle 30 formed after the connecting shaft 11 is provided with the trimming plane 12. When the connecting shaft 11 is fully inserted into the connecting cavity 21, the lock buckle 40 is accommodated in the upper limit position area 31, and the limiting height of the upper limit position area 31 is slightly larger than the thickness between the upper end surface and the lower end surface of the lock buckle 40. In this way, the upper limit position area 31 can just fit the lock buckle 40. The upper end surface of the protruding buckle 30 is used to limit the lower end surface of the lock buckle 40, and the step surface above the protruding buckle 30 formed after the connecting shaft 11 is provided with the cutting plane 12 is used to limit the upper end surface of the lock buckle 40, thereby preventing the lock buckle 40 from axial displacement (towards the upper end surface of the protruding buckle 30 or towards the step surface above the protruding buckle 30 formed after the connecting shaft 11 is provided with the cutting plane 12) when there is no external force.

[0048] like Figure 2 As shown, by setting the upper limit area 31 and the lower limit area 41, the lock buckle 40 and the convex buckle 30 are engaged with each other to form a bite state, which is similar to the meshing between the female buckle and the male buckle in a zipper. The connection stability is excellent. In the absence of axial external force, there is no need to worry about the lock buckle 40 and the convex buckle 30 being disconnected, thereby effectively ensuring the stability of the first connecting component 10 and the second connecting component 20 after the connection is completed.

[0049] At the same time, the setting of the upper limit area 31 and the lower limit area 41 also has the function of prompting whether the connecting shaft 11 is connected to the connecting cavity 21. When the connecting shaft 11 is inserted into the connecting cavity 21, as the depth of the connecting shaft 11 inserted into the connecting cavity 21 is continuously applied, it can be judged by hand whether the protruding buckle 30 abuts against the lower limit of the lower limit area 41 (i.e., the bottom wall of the connecting cavity 21). At the same time, an axial force is applied to the connecting shaft 11 in the reverse direction. It can be judged by hand whether the protruding buckle 30 abuts against the upper limit of the lower limit area 41 (i.e., the lower end face of the lock buckle 40), so as to judge whether the connecting shaft 11 and the connecting cavity 21 are adapted and connected in place.

[0050] Of course, during the above operation process, it is also possible to determine by feel whether the lock buckle 40 is abutting against the lower limit of the upper limit position area 31 (the upper end surface of the protruding buckle 30), and at the same time, by applying an axial force in the reverse direction to the connecting shaft 11, it is possible to determine by feel whether the lock buckle 40 is abutting against the upper limit of the upper limit position area 31 (that is, the step surface above the protruding buckle 30 formed after the cutting plane 12 is set on the connecting shaft 11), so as to determine whether the connecting shaft 11 and the connecting cavity 21 are adapted and connected in place.

[0051] Furthermore, the upper limit area 31 and the lower limit area 41 are respectively realized by utilizing the limit plane 22 and the trimming plane 12, without the need for independent design, thus avoiding structural complexity. By effectively utilizing the advantages of the original structure, the upper limit area 31 and the lower limit area 41 can be formed by further optimizing the design.

[0052] Preferably, if Figures 4-5 As shown, each convex buckle 30 and each locking buckle 40 are wedge-shaped, that is, the front end of the convex buckle 30 has a certain conical tip, and the front end of the locking buckle 40 also has a certain conical tip. After the convex buckle 30 with a wedge-shaped structure and the locking buckle 40 with a wedge-shaped structure are mutually buckled, the convex buckle 30 and the locking buckle 40 can be forced to separate after an axial force is applied, so that the locking buckle 40 and the convex buckle 30 are detachably connected.

[0053] In this embodiment, Figure 2 and Figures 4-5As shown, the upper and lower end surfaces of the front ends of each lock buckle 40 protruding into the connection cavity 21 along the central axis P are provided with chamfered arc surfaces 42. Specifically, the chamfered arc surfaces 42 on the lock buckle 40 are mainly used to reduce the friction force when it contacts with the convex buckle 30 and generates mutual axial displacement. When the connecting shaft 11 is inserted into the connection cavity 21, the convex buckle 30 abuts against the upper end surface of the lock buckle 40, and the force is continuously applied. The convex buckle 30 presses against the upper end surface of the lock buckle 40 to force the lock buckle 40 to slide radially. Then, under the action of the chamfered arc surfaces 42, the convex buckle 30 and the chamfered arc surfaces 42 are more likely to slide against each other, and then it is easier to force the lock buckle 40 to compress the elastic member 50 to achieve radial displacement until the connecting shaft 11 is inserted into the connection cavity 21 and is adapted to connect with the connection cavity 21. When it is necessary to separate the connection between the connecting shaft 11 and the connection cavity 21. When a force is applied externally to pull out the connecting shaft 11, the upper end surface of the protrusion 30 on the connecting shaft 11 abuts against the lower end surface of the lock buckle 40 and forces the lock buckle 40 to slide radially. Then, still under the action of the chamfered arc surface 42, it is easier for the protrusion 30 and the chamfered arc surface 42 to slide against each other, and then it is easier to force the lock 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, so that the connecting shaft 11 is separated from the connecting cavity 21.

[0054] That is to say, by providing chamfered arc surfaces 42 on the upper and lower end surfaces of the front end of the lock buckle 40 protruding into the connecting cavity 21, it is convenient to connect and separate the connecting shaft 11 and the connecting cavity 21, thereby improving the convenience of use and enhancing practicality.

[0055] In other embodiments, in the corresponding protrusions 30 and lock buckles 40, at least one outer end of the protrusions 30 and lock buckles 40 is a rectangular structure, and the other outer end of the protrusions 30 and lock buckles 40 is a round head structure. In this way, the corresponding protrusions 30 and lock buckles 40 can also be buckled with each other.

[0056] In this embodiment, the materials of the lock buckle 40 and the protruding buckle 30 can be freely selected according to needs and different products, for example, they can be plastic parts or metal parts.

[0057] In this embodiment, preferably, Figure 6 As shown, each convex buckle 30 is integrally formed on the connecting shaft 11. When the connecting shaft 11 is manufactured, the convex buckle 30 is manufactured together, that is, the convex buckle 30 and the connecting shaft 11 are an integral structure, and this structural design can effectively improve the stability of the convex buckle 30. Even if the connecting shaft 11 is small in size, the structural stability of the convex buckle 30 can still be ensured, and this structural design can also ensure that when the axial space of the connecting shaft 11 is set, the use and performance of the convex buckle 30 will not be affected.

[0058] Specifically, when the connecting shaft 11 is made of plastic material by injection molding, the protruding buckle 30 is also made by injection molding in one piece.

[0059] Among them, Figure 2 , Figure 5 and Figure 7 As shown, the first connecting component 10 or the second connecting component 20 provided with the connecting cavity 21 is also provided with the installation cavity 23. In this embodiment, the second connecting component 20 is provided with both the connecting cavity 21 and the installation cavity 23 as an example for explanation. The installation cavity 23 is located on the side of the connecting cavity 21 and is connected with the connecting cavity 21 through a channel hole 24. The channel hole 24 is arranged inside the second connecting component 20, and the channel hole 24 is located between the installation cavity 23 and the connecting cavity 21. At the same time, the extension direction of the channel hole 24 is radial. The lock buckle 40 is slidably connected to the channel hole 24. The lock buckle 40 at least has a component structure located in the channel hole 24, and the outer annular size of the lock buckle 40 is adapted to the inner annular size of the channel hole 24 to ensure that the lock buckle 40 can slide radially in the channel hole 24 as a standard. The elastic member 50 abuts between the rear end of the lock buckle 40 and the inner wall of the installation cavity 23. That is, one end of the elastic member 50 abuts against the inner wall of the radial distal end of the installation cavity 23, and the other end of the elastic member 50 abuts against the rear end of the lock buckle 40 (relative to the front end of the lock buckle 40 protruding into the connection cavity 21). In this way, the elastic member 50 can always exert elastic force on the lock buckle 40, forcing the lock buckle 40 to always have a force to slide toward the connection cavity 21. Without the force of the protruding buckle 30, the lock buckle 40 uses a partial structure (such as the front end of the lock buckle 40) to protrude into the connection cavity 21, so as to ensure that when the connecting shaft 11 is fully inserted into the connection cavity 21, the lock buckle 40 is adapted to be accommodated in the upper limit area 31.

[0060] When the length of the lock buckle 40 is long, the lock buckle 40 can be limited by the length of the lock buckle 40 so that the lock buckle 40 will not completely slide into the connection cavity 21 in the passage hole 24. For example, when the length of the lock buckle 40 is greater than the longest length of the inner wall relative to the connection cavity 21, the lock buckle 40 cannot completely slide into the connection cavity 21. The lock buckle 40 can also be limited by a local special-shaped structure to slide from the connection passage into the connection cavity 21.

[0061] When the length of the lock buckle 40 is short, a protrusion 43 perpendicular to the central axis P is provided on the side of the rear end of the lock buckle 40 to abut against the inner wall of the installation cavity 23 to limit the lock buckle 40 from sliding completely into the connection cavity 21 in the channel hole 24. Specifically, when the elastic member 50 applies a force large enough to force the lock buckle 40 to slide toward the connection cavity 21, the protrusion 30 provided at the rear end of the lock buckle 40 abuts against the inner wall of the junction of the installation cavity 23 and the channel, so that the inner wall of the installation cavity 23 limits the lock buckle 40 from sliding further into the connection cavity 21, thereby ensuring that the connection cavity 21 will not slide into the connection cavity 21.

[0062] Such a design can ensure that the lock buckle 40 will not fall off after installation, and the lock buckle 40 will not fall off even if it is frequently used and slides frequently in the channel hole 24. The structural design is ingenious and practical.

[0063] Preferably, if Figures 4-5 As shown, there are two protrusions 43, and the two protrusions 43 are arranged opposite to each other (the extension directions of the two protrusions 43 are opposite and extend on the same straight line), so that the lock buckle 40 can be limited at two positions to completely prevent it from sliding into the connecting cavity 21.

[0064] Preferably, the lock buckle 40 is integrally formed by injection molding of a plastic material, and the protrusion 43 and the lock buckle 40 are integrally formed by injection molding.

[0065] Furthermore, if Figure 2 and Figures 4-5 As shown, the rear end of the lock buckle 40 is also provided with a limiting column 44, and the elastic member 50 is sleeved outside the limiting column 44. The limiting column 44 is designed to be sleeved by the elastic member 50, and the elastic member 50 is preferably a tubular spring, which is sleeved in the limiting column 44. Through the limitation of the limiting column 44, the spring is deformed along the axial direction of the limiting column 44 during the deformation process of being compressed or restoring the elastic force. On the one hand, it is ensured that when the spring is compressed, it will not bounce off the installation position due to deformation, and on the other hand, it is ensured that when the spring restores the elastic force after compression, that is, the elastic force acting on the lock buckle 40 always makes the lock buckle 40 slide radially in the channel hole 24, so that the front end of the lock buckle 40 protrudes into the connecting cavity 21, so that the lock buckle 40 can be buckled with the convex buckle 30 on the connecting shaft 11.

[0066] Preferably, the limiting column 44 is also integrally injection-molded with the lock buckle 40. The limiting column 44 is extended and arranged along the length direction of the lock buckle 40.

[0067] In this embodiment, Figure 2 and Figures 4-5 As shown, the installation cavity 23 is an open cavity, and the open cavity has an open opening. That is, an open opening is formed in the installation cavity 23, and the setting of the open opening facilitates the assembly of the lock buckle 40 and the elastic member 50. During the specific assembly, the lock buckle 40 can be placed in the installation cavity 23 in the open opening with the elastic member 50 sleeved outside the limiting column 44, and the front end of the lock buckle 40 protrudes from the channel hole 24 to the connecting cavity 21, which facilitates the installation and arrangement of the lock buckle 40 and the elastic member 50.

[0068] Furthermore, if Figure 2 and Figures 4-5As shown, the open mouth is blocked with a sealing block 61, which can fit tightly (interference fit) with the open mouth to block the installation cavity 23, so that a closed cavity structure is formed in the installation cavity 23, ensuring that the elastic member 50 and the lock buckle 40 will not fall out of the open mouth.

[0069] Furthermore, if Figure 2 , Figures 4-5 and Figure 7 As shown, when there are two or more mounting cavities 23, a sealing fixing plate 60 can be provided, and then sealing blocks 61 corresponding to the positions of the mounting cavities 23 are provided on the sealing fixing plate 60. In this way, a single sealing fixing plate 60 can be used to ensure that the open openings of multiple mounting cavities 23 are sealed.

[0070] Preferably, if Figure 2 As shown, the opening of the installation cavity 23 is arranged at the bottom of the installation cavity 23. Since the connecting shaft 11 is preferably arranged above the connecting cavity 21, that is, the first connecting component 10 is located above the second connecting component 20, the opening of the installation cavity 23 is designed in this way to prevent the sealing block 61 from being interfered by the first connecting component 10.

[0071] The present invention also provides a shaving device, Figures 8-9 As shown, the shaving device includes a cutter head assembly 100 and a handle assembly 200. The cutter head assembly 100 is a component for implementing the operation, and the handle assembly 200 is a component for holding and providing an electric or power supply component for installation. Further, the cutter head assembly 100 includes at least one first connecting component 10 or a second connecting component 20 in the above-mentioned connecting structure, and the handle assembly 200 includes another first connecting component 10 or a second connecting component 20 in the above-mentioned connecting structure. The cutter head assembly 100 and the handle assembly 200 are connected or separated by connecting or separating the first connecting component 10 and the second connecting component 20.

[0072] The shaving device of the embodiment of the present invention uses the above-mentioned connection structure. Therefore, even if the cutter head assembly 100 and the handle assembly 200 are frequently assembled and disassembled, the elastic member 50 in the connection structure can still be relied on to ensure that the first connection part 10 and the second connection part 20 are in a connected state, thereby enabling the cutter head assembly 100 and the handle assembly 200 to always maintain a stable connection state, and the entire assembly and disassembly operation is very convenient and practical.

[0073] In other embodiments, personal care products such as trimmers, beauty devices, etc. may also include the above-mentioned connection structure to ensure that the blade assembly 100 and the handle assembly 200 of the personal care product can be frequently assembled and disassembled without affecting the stability of the connection between the blade assembly 100 and the handle assembly 200.

[0074] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A connection structure, comprising a first connection component and a second connection component, characterized in that: At least one of the first connecting component and the second connecting component is provided with a connecting shaft, and the other one of the first connecting component and the second connecting component is provided with a connecting cavity, the shape of the connecting shaft is adapted to the shape of the connecting cavity and can be connected or separated from each other; the connecting shaft is provided with at least two protruding buckles protruding in the radial direction, the connecting cavity is provided with a lock buckle corresponding to the position of each protruding buckle and capable of sliding in the radial direction and with the front end protruding into the connecting cavity, each of the lock buckles is provided with an elastic member for forcing the lock buckle to slide toward the connecting cavity, and when the connecting shaft is inserted into the connecting cavity, the protruding buckle forces the corresponding lock buckle to slide radially until it is buckled with the lock buckle; The first connecting component and the second connecting component are provided with through holes which are located at corresponding positions so as to be connected.

2. The connection structure according to claim 1, characterized in that: The connecting shaft is provided with at least one trimming plane, and the connecting cavity is provided with a limiting plane which cooperates with each trimming plane and is used to limit the connecting shaft from rotating around the central axis in the connecting cavity.

3. The connection structure according to claim 2, characterized in that: At least one of the protruding buckles is arranged on one of the trimming planes, and at least one of the locking buckles is arranged on one of the limiting planes.

4. The connection structure according to claim 1, characterized in that: A lower limit area for accommodating the lock buckle is formed between the front end of the lock buckle protruding into the connecting cavity and the bottom of the connecting cavity.

5. The connection structure according to claim 1, characterized in that: The connecting shaft is provided with an upper limit area located above the protruding buckle and used for accommodating the front end of the locking buckle protruding into the connecting cavity.

6. The connection structure according to claim 1, characterized in that: Each of the protruding buckles and each of the locking buckles is in a wedge shape.

7. The connection structure according to claim 1, characterized in that: The upper end surface and the lower end surface of the front end of each locking buckle protruding into the connecting cavity along the central axis are both provided with chamfered arc surfaces.

8. The connection structure according to claim 1, characterized in that: Each of the protruding buckles is integrally formed on the connecting shaft.

9. The connection structure according to any one of claims 1 to 8, characterized in that: The first connecting component or the second connecting component provided with the connecting cavity is also provided with an installation cavity, the installation cavity is located on the side of the connecting cavity and is connected with the connecting cavity through a channel hole, the lock buckle is slidably connected to the channel hole, and the elastic member abuts between the rear end of the lock buckle and the inner wall of the installation cavity.

10. The connection structure according to claim 9, characterized in that: A protrusion is provided at the rear end of the lock buckle for abutting against the inner wall of the installation cavity to limit the lock buckle from completely sliding into the connection cavity in the channel hole.

11. The connection structure according to claim 9, characterized in that: A limiting column is also provided at the rear end of the lock buckle, and the elastic member is sleeved outside the limiting column.

12. The connection structure according to claim 9, characterized in that: The installation cavity is an open cavity, and a sealing block is provided at the open opening of the open cavity.

13. A shaving device, comprising a cutter head assembly and a handle assembly, characterized in that: The tool head assembly includes at least one of the first connecting component or the second connecting component in the connecting structure described in any one of claims 1 to 12, and the handle assembly includes another of the first connecting component or the second connecting component in the connecting structure described in any one of claims 1 to 12. The tool head assembly and the handle assembly are connected or separated by the connection or separation between the first connecting component and the second connecting component.

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