Watch crown assembly and wearable device

Abstract

A watch crown assembly (200) and a wearable device (100). The wearable device (100) comprises the watch crown assembly (200). The watch crown assembly (200) comprises a button cap (210) and a button stem (220). The button cap (210) comprises a first top plate (211) and a first side plate (212), and the first side plate (212) and the first top plate (211) enclose to form a button cap recess (201). The button stem (220) comprises a stem body (221) and a stem connecting portion (222). The stem body (221) comprises a first end and a second end, and the stem connecting portion (222) comprises a second top plate (2221) and a second side plate (2222). The first end of the stem body (221) is connected to the second top plate (2221), and the second side plate (2222) and the second top plate (2221) enclose to form a button stem recess (202). A part of the button stem (220) is located inside the button cap recess (201), and the direction of the button stem recess (202) is the same as that of the button cap recess (201). By means of separately and independently providing the button cap (210) and the button stem (220) in the crown assembly (200), the button cap (210) and the button stem (220) can be made of different materials, thereby enabling the watch crown assembly (200) to be in any color, ensuring the mechanical reliability of the watch crown assembly (200), and achieving a balance between aesthetic appearance and mechanical performance.

Description

Crown assembly and wearable device

[0001] The present application claims priority to the Chinese patent application No. 202410473998.0, filed on April 19, 2024, with the State Intellectual Property Office of China, and the Chinese patent application No. 202410473998.0 has the title of “Crown assembly and wearable device”, the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the field of electronic devices, and more particularly, to a crown assembly and a wearable device. BACKGROUND

[0003] With the development of wearable devices, the application of wearable devices such as smart watches is becoming more and more widespread, and the rotating crown of the smart watch is also being applied more widely. However, the rotating crown at the present stage still has some problems in actual application, such as insufficient mechanical reliability of the rotating crown, poor appearance of the rotating crown, etc. Therefore, it is urgent to provide a rotating crown assembly and a wearable device with better effects. SUMMARY

[0004] The present application provides a crown assembly and a wearable device, which can be applied to a wearable device, and can increase the appearance effect of the crown assembly while meeting the mechanical reliability of the crown assembly.

[0005] In a first aspect, a crown assembly is provided, which includes a key cap and a key rod, the key cap includes a first top plate and a first side plate, the first side plate and the first top plate form a key cap recess; the key rod includes a rod body and a rod connecting part; the rod body includes a first end and a second end, the rod connecting part includes a second top plate and a second side plate, the first end of the rod body is connected to the second top plate, and the second side plate and the second top plate form a key rod recess; part of the key rod is located inside the key cap recess, and the directions of the key rod recess and the key cap recess are the same.

[0006] For example, the first top plate includes an outer surface and an inner surface, the outer surface of the first top plate is the outward-facing surface, i.e., the surface facing the user, which can be directly touched by the user; the inner surface of the first top plate is the inward-facing surface, i.e., the surface away from the user. Similarly, the first side plate also includes two surfaces, i.e., the outer surface of the first side plate and the inner surface of the first side plate, the outer surface of the first side plate is the surface facing the user, and the inner surface of the first side plate is the surface away from the user.

[0007] Exemplarily, the second top plate comprises an outer surface and an inner surface, the outer surface of the second top plate is a surface facing outward, i.e., a surface facing the keycap; the inner surface of the second top plate is a surface facing inward, i.e., a surface away from the keycap. Similarly, the second side plate also comprises two surfaces, i.e., an outer surface of the second side plate and an inner surface of the second side plate, the outer surface of the second side plate is a surface close to the keycap, and the inner surface of the second side plate is a surface away from the keycap.

[0008] Exemplarily, the rod connecting portion of the key rod is at least partially located inside the keycap groove. It should be understood that the outer surface of the second top plate is in contact with the inner surface of the first top plate, the outer surface of the second side plate is in contact with the inner surface of the first side plate, and the rod connecting portion can be embedded inside the keycap groove.

[0009] It should be understood that the key rod groove and the keycap groove are oriented in the same direction, for example, the key rod groove and the keycap groove are both oriented towards the movement.

[0010] In the embodiments of the present application, by separating the keycap and the key rod in the crown assembly and independently arranging them, the keycap and the key rod can be made of different materials, for example, the keycap can be made of a material capable of anodizing treatment or a material easy to color, and the key rod can be made of a material with certain mechanical strength, so that the crown assembly can present any color, and the mechanical reliability of the crown assembly can be guaranteed, and the balance between appearance and mechanical performance is achieved. In addition, the structure of the crown assembly provided in the embodiments of the present application is relatively simple, the manufacturing cost is low, and the structure space occupied by the crown assembly is small.

[0011] In a possible implementation, the material of the keycap comprises any one of the following: aluminum, magnesium, titanium, zinc, nickel; and the key rod is made of stainless steel or titanium alloy.

[0012] Exemplarily, the keycap can be made of aluminum alloy material, magnesium alloy material, titanium alloy material, zinc alloy material, nickel alloy material, etc., and the key rod can be made of stainless steel material, titanium alloy material (such as TC4), etc.

[0013] In the embodiments of the present application, the keycap can be made of a material capable of surface anodizing treatment (such as aluminum, magnesium, titanium, zinc, nickel, etc.), so that the keycap can be colored by surface anodizing treatment. It should be understood that surface anodizing treatment is a treatment process of forming an oxide layer on the surface of a metal to improve the corrosion resistance, hardness and appearance of the metal. The key rod can be made of stainless steel material or titanium alloy material, which can increase the strength of the key rod relative to the aluminum alloy material, thereby guaranteeing the mechanical reliability of the crown assembly.

[0014] In a possible implementation, the first connecting part is arranged on the inner surface of the first side plate of the key cap, and the second connecting part is arranged on the outer surface of the second side plate of the rod connecting part.

[0015] In the embodiments of the present application, the first connecting part and the second connecting part can be used in combination to achieve fixed connection of the two, thereby achieving fixed connection of the key cap and the key rod.

[0016] In a possible implementation, the first connecting part is a rotating groove, and the second connecting part is a boss matched with the rotating groove, and the boss can rotate into the rotating groove.

[0017] It should be noted that the positions of the rotating groove and the boss can be interchanged, for example, the first connecting part can be a boss, and the second connecting part can be a rotating groove.

[0018] In this implementation, the first connecting part and the second connecting part can be fixedly connected by using the boss and the rotating groove in combination, that is, by a mechanical rotating mode, thereby achieving fixed connection between the key cap and the key rod.

[0019] In a possible implementation, the inner surface of the first side plate of the key cap is further provided with a first groove, and the outer surface of the second side plate of the rod connecting part is further provided with a second groove, and the second groove at least partially overlaps the projection of the first side plate on the first groove, or the projection of the first groove on the second side plate at least partially overlaps the second groove.

[0020] It should be understood that the number of the first groove and the second groove can be multiple, and multiple first grooves can be arranged along the inner surface of the first side plate, and multiple second grooves can be arranged along the outer surface of the second side plate.

[0021] In the embodiments of the present application, the first groove and the second groove are arranged, and the projection of the second groove on the first side plate at least partially overlaps the first groove, so that when the key cap and the key rod are assembled, there is a combination gap between the key cap and the key rod. When the key rod is assembled with the key cap by rotation, glue can be applied at the combination gap, so that the first side plate of the key cap and the second side plate of the rod connecting part can be bonded together, avoiding relative rotation of the key cap and the key rod, and ensuring the reliability of the crown assembly.

[0022] In a possible implementation, the first connecting part is a first thread structure arranged in a circumferential direction, the second connecting part is a second thread structure arranged in a circumferential direction, and the key cap is rotated into the second thread structure through the first thread structure to achieve the fixed connection between the key cap and the key rod.

[0023] It should be noted that the positions of the first thread structure and the second thread structure can be interchanged, for example, the first connecting part can be the second thread structure, and the second connecting part can be the first thread structure.

[0024] In this implementation, the first thread structure can be rotated and embedded in the second thread structure to achieve the fixed connection between the key cap and the key rod. In addition, after the assembly of the key cap and the key rod is completed, there is no assembly gap between the key cap and the key rod from the appearance, which is more beautiful.

[0025] In a possible implementation, the inner surface of the first side plate is provided with a first extension arranged in an axial direction, and the outer surface of the second side plate is provided with a second extension arranged in an axial direction.

[0026] It should be understood that the number of the first extension and the second extension can be multiple, and the first extension and the second extension can be used to hide the hot melt glue. By arranging the first extension and the second extension, when the hot melt glue is applied to the inner surface of the first top plate of the key cap, the glue can overflow from the inner surface of the first top plate to the first extension and the second extension when the key cap and the key rod are assembled, so that the first side plate of the key cap and the second side plate of the rod connecting part can be tightly bonded, avoiding the relative rotation between the key cap and the key rod, and ensuring the reliability of the crown assembly.

[0027] In a possible implementation, the crown assembly further includes a plastic connecting piece located between the key cap and the key rod, and the plastic connecting piece is connected with the rod connecting part of the key rod.

[0028] For example, the material of the plastic connecting piece can be polyphenylene sulfide combined with 20% glass fiber.

[0029] It should be noted that the main function of the plastic connecting piece is to connect the key cap and the key rod, that is, it mainly plays a connecting role, and its material is mainly plastic material. Of course, other types of materials can also be used. In this application, the material of the plastic connecting piece is mainly taken as an example for description, but in some other embodiments, the material of the plastic connecting piece can also be other materials.

[0030] In this implementation, the plastic connecting piece can be connected between the key cap and the rod connecting part of the key rod. The key cap and the key rod can be fixedly connected through the plastic connecting piece.

[0031] In a possible implementation, the plastic connecting piece comprises a third top plate and a third side plate, and the third top plate and the third side plate enclose a connecting piece groove; the connecting piece groove is located in the key cap groove, and the key stem groove is located in the connecting piece groove.

[0032] For example, the third top plate comprises an outer surface and an inner surface, the outer surface of the third top plate is the outward-facing surface, i.e., the surface close to the key cap; and the inner surface of the third top plate is the inward-facing surface, i.e., the surface close to the key stem. Similarly, the third side plate also comprises two surfaces, i.e., the outer surface of the third side plate and the inner surface of the third side plate, the outer surface of the third side plate is the surface close to the key cap, and the inner surface of the third side plate is the surface close to the key stem.

[0033] It should be understood that the inner surface of the third top plate is in contact with the outer surface of the second top plate, the inner surface of the third side plate is in contact with the outer surface of the second side plate, and the stem connecting portion can be embedded in the connecting piece groove; the outer surface of the third top plate is in contact with the inner surface of the first top plate, and the outer surface of the third side plate is in contact with the inner surface of the first side plate, so that the plastic connecting piece can be embedded in the key cap groove.

[0034] It should be understood that the key stem groove, the key cap groove and the connecting piece groove are oriented in the same direction, for example, the key stem groove, the key cap groove and the connecting piece groove are all oriented towards the movement.

[0035] In a possible implementation, the plastic connecting piece is fixedly connected with the key cap by a nano-injection molding process or an insert injection molding process, and the plastic connecting piece is fixedly connected with the stem connecting portion of the key stem by a dispensing process.

[0036] In this implementation, when assembling the crown assembly, the plastic connecting piece and the key cap can be assembled together by using the nano-injection molding process or the insert injection molding process first, and then the plastic connecting piece and the stem connecting portion of the key stem can be assembled together by using the dispensing process, so as to finally realize the fixed connection of the key cap and the key stem.

[0037] In a possible implementation, the stem connecting portion of the key stem is fixedly connected with the plastic connecting piece by a nano-injection molding process or an insert injection molding process, and the key stem is fixedly connected with the key cap by a dispensing process.

[0038] In this implementation, when assembling the crown assembly, the plastic connecting piece and the stem connecting portion of the key stem can be assembled together by using the nano-injection molding process or the insert injection molding process first, and then the plastic connecting piece and the key cap can be assembled together by using the dispensing process, so as to finally realize the fixed connection of the key cap and the key stem.

[0039] In a possible implementation, a third connecting portion is arranged on the inner surface of the third side plate of the plastic connecting piece, a fourth connecting portion is arranged on the outer surface of the second side plate of the rod connecting portion, and the third connecting portion is fixedly connected with the fourth connecting portion.

[0040] In this implementation, the third connecting portion and the fourth connecting portion can be used in combination to achieve fixed connection therebetween, thereby achieving fixed connection between the plastic connecting piece and the key rod, and finally achieving fixed connection between the key cap and the key rod.

[0041] In a possible implementation, the third connecting portion is a guide table, and the fourth connecting portion is a guide groove, and the guide table is clamped in the guide groove.

[0042] In this implementation, the fixed connection between the plastic connecting piece and the key rod can be achieved by using the guide table and the guide groove in combination, i.e., clamping the guide table in the guide groove, thereby preventing relative movement between the plastic connecting piece and the key rod.

[0043] In a possible implementation, a fifth connecting portion is arranged on the inner surface of the first side plate of the key cap, a sixth connecting portion is arranged on the outer surface of the third side plate of the plastic connecting piece, and the fifth connecting portion is fixedly connected with the sixth connecting portion.

[0044] In this implementation, the fifth connecting portion and the sixth connecting portion can be used in combination to achieve fixed connection therebetween, thereby achieving fixed connection between the key cap and the plastic connecting piece, and finally achieving fixed connection between the key cap and the key rod.

[0045] In a possible implementation, the rod connecting portion of the key rod is fastened in the interior of the key cap in an interference fit manner.

[0046] In this implementation, the rod connecting portion of the key rod can be fastened in the interior of the key cap recess in an interference fit manner, thereby achieving fixed connection between the key cap and the key rod.

[0047] In a possible implementation, a protruding portion is arranged on the inner surface of the first side plate of the key cap, a recessed portion is arranged on the outer surface of the second side plate of the rod connecting portion, and the protruding portion is clamped in the recessed portion.

[0048] In the implementation, the fixing connection of the key cap and the key rod is achieved by setting the protruding part on the key cap and the corresponding recessed part on the rod connecting part of the key rod through the clamping effect between the protruding part and the recessed part, and relative rotation between the key cap and the key rod is prevented when the key cap is rotated.

[0049] In a second aspect, a wearable device is provided, which includes the crown assembly of any possible implementation of the first aspect.

[0050] In a possible implementation, the wearable device can be a watch or a bracelet, etc.

[0051] It should be noted that the beneficial effects of the second aspect can refer to the beneficial effects of the first aspect, which will not be described here. BRIEF DESCRIPTION OF DRAWINGS

[0052] FIG. 1 is a structural schematic diagram of a smart watch according to an embodiment of the present application.

[0053] FIGS. 2 and 3 are structural schematic diagrams of a crown according to an embodiment of the present application.

[0054] FIGS. 4 to 6 are structural schematic diagrams of another crown according to an embodiment of the present application.

[0055] FIGS. 7 and 8 are structural schematic diagrams of another crown according to an embodiment of the present application.

[0056] FIGS. 9 and 10 are structural schematic diagrams of another crown according to an embodiment of the present application.

[0057] FIGS. 11 and 12 are structural schematic diagrams of another crown according to an embodiment of the present application.

[0058] FIGS. 13 and 14 are structural schematic diagrams of another crown according to an embodiment of the present application.

[0059] FIGS. 15 and 16 are structural schematic diagrams of another crown according to an embodiment of the present application. DETAILED DESCRIPTION

[0060] The embodiments of the present application are described in detail below, and examples of the embodiments of the present application are shown in the accompanying drawings. In the drawings, the same or similar reference numerals indicate the same or similar elements or elements having the same or similar functions. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0061] Unless otherwise defined, technical terms or scientific terms used herein shall have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. In the description of the application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, shall refer to the orientation or position as shown in the drawings, and are merely used for convenience and for brevity in describing this application and its preferred embodiments, unless otherwise noted, and are not meant in any way as indicating or implying that a particular orientation, construction or arrangement of the devices or elements is required to practice or use the application.

[0062] Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the application. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" or "in other embodiments" or "in still other embodiments" in various places throughout this specification are not necessarily referring to the same embodiment, unless otherwise noted. Furthermore, the terms "comprise", "comprising", "include", "including", "have", "has", "contain", "containing", or variants thereof, are intended to mean "including but not limited to", unless otherwise noted.

[0063] At present, the crown of wearable devices (such as smart watches) is mostly made of stainless steel. When the crown is colored by surface treatment, the surface treatment process of the stainless steel crown is mostly physical vapor deposition (PVD). However, the PVD surface treatment has limited colors, and there may be problems such as inconsistent color matching and unattractive appearance. If other materials (such as aluminum alloy materials) are used, the aluminum alloy material is subjected to anodic oxidation treatment, which can meet the diversified appearance effect, but there is a problem that the deformation of the aluminum alloy leads to the failure of the rotation function of the crown in mechanical tests.

[0064] Therefore, in order to realize mechanical reliability and diversified appearance effect, it is necessary to provide a new type of crown assembly and wearable device.

[0065] It should be noted that the wearable device provided by the embodiments of the present application can include a smart bracelet, a smart watch and the like, and can even include a smart wearable device on other parts such as ankles or necks. It should be understood that the "smart watch" in the embodiments of the present application is not limited to a "watch", but can also be other electronic devices, for example, it can be other smart wearable devices. In some cases, the smart watch can also be a mechanical watch or a wrist watch, which is not limited by the present application.

[0066] It should be understood that the present application will be described taking a smart watch 100 as an example.

[0067] FIG. 1 is a structural schematic diagram of a smart watch 100 according to an embodiment of the present application. In FIG. 1, (a) is a front view of the smart watch 100, and (b) is a back view of the smart watch 100.

[0068] As shown in FIG. 1, the smart watch 100 provided by the embodiment of the present application includes a watch body 110 and a watch band 120. The watch body 110, which can also be referred to as a watch head, is the main part of the watch. The watch band 120 generally includes two parts, which are connected to opposite sides of the watch body 110, and are used in cooperation to wear the smart watch 100 on the wrist of a user.

[0069] It can be understood that the inner surface of the watch body 110 is the side of the watch body 110 that contacts the wrist (or other parts) of the user, and the outer surface of the watch body 110 is the side of the watch body 110 that is away from the wrist (or other parts) of the user.

[0070] As shown in FIG. 1, in some embodiments, the watch body 110 can include a front cover 111, a watch frame 112, a back cover 113, and a display screen 114. The watch frame 112 has a hollow ring structure and can be used to connect the front cover 111 and the back cover 113. One end of the watch frame 112 is fixedly provided with the front cover 111 and the display screen 114, and the other end of the watch frame 112 is fixedly provided with the back cover 113. The front cover 111, the display screen 114, the watch frame 112, and the back cover 113 jointly define an inner cavity of the smart watch 100, which is used to accommodate electronic components such as a loudspeaker, a mainboard, a camera, a microphone, a sensor, a memory, a processor, and a battery.

[0071] The watch frame 112 provides mechanical support and protection for the whole smart watch 100. The watch frame 112 is composed of a material with sufficient hardness, for example, stainless steel, ceramic, titanium alloy, aluminum alloy, copper alloy, or hard plastic. As shown in FIG. 1, in the embodiment of the present application, the cross-sectional shape of the watch frame 112 is circular, and in other embodiments, the cross-sectional shape of the watch frame 112 can also be rectangular, square, or elliptical, which is not limited in the present application.

[0072] The front cover 111 covers one end of the watch frame 112, and the back cover 113 covers the other end of the watch frame 112, which contacts the wrist of the user when worn. The front cover 111 and the watch frame 112, and the back cover 113 and the watch frame 112 are sealingly connected, thereby achieving a waterproof effect.

[0073] Optionally, the front cover 111 and the back cover 113 can be made of stainless steel, titanium alloy, glass, ceramic, aluminum alloy, copper alloy, or plastic.

[0074] Optionally, the front cover 111 and the rear cover 113 can be coupled to the bezel 112 by screwing, clamping or the like. A sealing ring can be arranged between the front cover 111 and the bezel 112 and between the rear cover 113 and the bezel 112 to improve the sealing and waterproof effect of the joint between the front cover 111 and the bezel 112 and between the rear cover 113 and the bezel 112. The sealing ring can be made of high-elasticity materials such as silica gel or rubber.

[0075] Optionally, the front cover 111 and the bezel 112, or the rear cover 113 and the bezel 112, or the front cover 111, the bezel 112 and the rear cover 113 can be made into an integrated structure by an integrated molding process, thereby simplifying the structure of the smart watch and improving the production efficiency. In addition, since there can be no joint gap between the front cover 111 and the bezel 112 and between the rear cover 113 and the bezel 112, the overall waterproof effect of the smart watch can be improved.

[0076] For example, the integrated molding process can be casting, sintering, injection molding or 3D printing technology, but is not limited thereto.

[0077] The display screen 114 is used to provide human-computer interaction between the user and the smart watch, for example, to display information (such as time, news, weather, etc.) to the user or to receive information input by the user (such as receiving control instructions of the user).

[0078] Optionally, the display screen 114 can be a touch screen, for example, a liquid crystal display (LCD), an organic light-emitting diode (OLED), an active-matrix organic light emitting diode (AMOLED), a flexible light-emitting diode (FLED), a Miniled, a MicroLed, a Micro-oLed, a quantum dot light emitting diodes (QLED) display screen, etc., but is not limited thereto.

[0079] The display screen 114 is mounted on the front cover 111, and the accommodating cavity formed between the front cover 111, the rear cover 113, the bezel 112 and the display screen 114 can accommodate a watch core. The watch core is the main part of the smart watch, and the watch core can be formed by a plurality of electronic components. The specific structure of the watch core is not specially limited in the embodiments of the present application. For example, the watch core can be formed by any one or more components inside the smart watch.

[0080] It should be noted that in some embodiments, the bezel 110 can not be provided with the front cover 111 in view of the aesthetics of the smart watch 100. That is, the bezel 110 includes a bezel 112, a back cover 113 and a display screen 114. The bezel 112 is in a hollow ring structure and can be used to connect the display screen 114 and the back cover 113. One end of the bezel 112 is fixedly provided with the display screen 114, and the other end of the bezel 112 is fixedly provided with the back cover 113. The display screen 114, the bezel 112 and the back cover 113 jointly define an inner cavity of the smart watch 100, which is used to accommodate electronic components such as a speaker, a mainboard, a camera, a microphone, a sensor, a memory, a processor and a battery.

[0081] In some embodiments, the bezel 110 can be composed of a front panel and a back panel. The front panel can include the front cover 111 and a part of the bezel 112, and the back panel can include the back cover 113 and another part of the bezel 112. In one example, the front panel and the back panel can be made into an integral structure by an integral molding process. In another example, the front panel and the back panel can be independently made, and the front panel and the back panel can be combined together by bonding, screwing, clamping or the like to form the bezel 110. For example, a sealing ring can be arranged between the front panel and the back panel to achieve a sealing effect.

[0082] As shown in FIG. 1, the smart watch 100 provided by the embodiments of the present application further includes a crown 200 (i.e., a crown assembly) arranged on the outer wall of the bezel 112. The crown 200 can also be referred to as a key or a button. The crown 200 is connected with an internal watch core (not shown in the figure) and can be used to adjust the functions of the smart watch 100, such as adjusting the time, turning on / off the machine, adjusting the speaker volume, adjusting the display screen brightness, etc. The crown 200 can be rotated or pressed to realize the above-mentioned functions.

[0083] It should be understood that a through hole (not shown in the figure) is arranged on the bezel 112, and a part (such as a key rod) of the crown 200 can be inserted into the inside of the bezel 110 from the outside of the smart watch 100 through the through hole and connected with the watch core inside the bezel 110; another part (such as a key cap) of the crown 200 can be exposed and located outside the bezel 110.

[0084] The embodiments of the present application mainly relate to the improvement of the structure of the crown 200, and a new crown design scheme is provided. The structure of the crown is simple, easy to disassemble, and can also facilitate the maintenance of the smart watch. In addition, the same smart watch can be matched with different colored crowns for use, which can increase the aesthetics.

[0085] FIG. 2 and FIG. 3 are structural schematic diagrams of a crown according to an embodiment of the present application. In FIG. 2, (a) is a structural schematic diagram of the crown as a whole, and (b) is an exploded view of the crown. In FIG. 3, (a) is a cross-sectional structural schematic diagram of the crown, (b) is a structural schematic diagram of a key stem, and (c) is a structural schematic diagram of a key cap.

[0086] As shown in FIG. 2, the crown 200 (or crown assembly) includes a key cap 210 and a key stem 220. The key cap 210 includes a first top plate 211 and a first side plate 212, and the first side plate 212 and the first top plate 211 enclose a key cap recess 201.

[0087] For example, the key cap recess 201 can be formed by the first side plate 212 around the first top plate 211. The first side plate 212 can be annular or circular, or can be other shapes such as square or diamond, without limitation.

[0088] For example, the first top plate 211 includes an outer surface and an inner surface. The outer surface of the first top plate 211 is the outward-facing surface, i.e., the surface facing the user and directly touched by the user. The inner surface of the first top plate 211 is the inward-facing surface, i.e., the surface facing away from the user. Similarly, the first side plate 212 also includes two surfaces, i.e., an outer surface of the first side plate 212 and an inner surface of the first side plate 212. The outer surface of the first side plate 212 is the surface facing the user, and the inner surface of the first side plate 212 is the surface facing away from the user.

[0089] The first side plate 212 and the first top plate 211 enclose the key cap recess 201, which can be understood as follows: the inner surface of the first side plate 212 and the inner surface of the first top plate 211 can enclose the key cap recess 201. The key cap recess 201 can accommodate part of the structure of the key stem 220.

[0090] As shown in (b) of FIG. 2, the key stem 220 includes a stem body 221 and a stem connecting portion 222. The stem body 221 includes a first end and a second end. The first end of the stem body 221 is the end close to the key cap 210, and the first end of the stem body 221 can be connected with the stem connecting portion 222. The second end of the stem body 221 is the end away from the key cap 210, and the second end of the stem body 221 can be connected with the above-mentioned watch core.

[0091] For example, the stem body 221 and the stem connecting portion 222 can be made into an integral structure by an integral molding process, such as casting, sintering, injection molding, or 3D printing technology, without limitation.

[0092] As shown in (b) of FIG. 2, the rod connecting portion 222 includes a second top plate 2221 and a second side plate 2222, and the first end of the rod body 221 is connected to the second top plate 2221. The second side plate 2222 and the second top plate 2221 enclose a key rod groove 202. The key rod 220 is partially located inside the key cap groove 201, and the directions (or orientations) of the key rod groove 202 and the key cap groove 201 are the same.

[0093] For example, the key rod groove 202 can be formed around the second top plate 2221 by the second side plate 2222. The second side plate 2222 can be annular or circular, or can be other shapes such as square, diamond, etc., which are not limited.

[0094] For example, the second top plate 2221 includes an outer surface and an inner surface. The outer surface of the second top plate 2221 is the outward-facing surface, i.e., the surface facing the key cap 210. The inner surface of the second top plate 2221 is the inward-facing surface, i.e., the surface away from the key cap 210. Similarly, the second side plate 2222 also includes two surfaces, i.e., the outer surface of the second side plate 2222 and the inner surface of the second side plate 2222. The outer surface of the second side plate 2222 is the surface close to the key cap 210, and the inner surface of the second side plate 2222 is the surface away from the key cap 210.

[0095] The second top plate 2221 and the second side plate 2222 enclose the key rod groove 202, which can be understood as that the inner surface of the second top plate 2221 and the inner surface of the second side plate 2222 can enclose the key cap groove 201. The key rod groove 202 can accommodate part of the rod body 221.

[0096] For example, part or all of the rod connecting portion 222 of the key rod 220 can be located inside the key cap groove 201. That is, the outer surface of the second top plate 2221 is in contact with the inner surface of the first top plate 211, and the outer surface of the second side plate 2222 is in contact with the inner surface of the first side plate 212. The rod connecting portion 222 can be embedded inside the key cap groove 201.

[0097] It should be understood that the orientations of the key rod groove 202 and the key cap groove 201 are the same, for example, the key rod groove 202 and the key cap groove 201 are both oriented towards the movement.

[0098] In some embodiments, the key cap 210 includes but is not limited to the following materials: aluminum, magnesium, titanium, zinc, nickel. The key rod 220 includes but is not limited to the following materials: stainless steel material, titanium alloy material. For example, the key cap 210 can be made of aluminum alloy material, magnesium alloy material, titanium alloy material, zinc alloy material, nickel alloy material, etc., and the key rod 220 can be made of stainless steel material, titanium alloy material, etc.

[0099] The key cap 210 can be made of a material capable of surface anodizing treatment (such as aluminum, magnesium, titanium, zinc, nickel, etc.), so that the key cap 210 can be colored by surface anodizing treatment. It should be understood that surface anodizing treatment is a process of forming an oxide layer on the surface of a metal to improve the corrosion resistance, hardness and appearance of the metal. The key rod 220 can be made of stainless steel or titanium alloy material (such as TC4), which can increase the strength of the key rod 220 compared to aluminum alloy material, thereby ensuring the mechanical reliability of the crown 200.

[0100] For example, the embodiment of the present application can use aluminum alloy material for the key cap 210 and stainless steel material for the key rod 220, which can increase the appearance of the crown while ensuring the mechanical strength of the key rod.

[0101] In the embodiment of the present application, the key cap 210 and the key rod 220 in the crown 200 are separately arranged, so that the key cap 210 and the key rod 220 can be made of different materials. For example, the key cap 210 can be made of a material capable of anodizing treatment or a material easy to color, and the key rod 220 can be made of a material with certain mechanical strength, so that the crown 200 can have any color and ensure the mechanical reliability of the crown 200, achieving a balance between appearance and mechanical performance. In addition, the structure of the crown 200 provided by the embodiment of the present application is relatively simple, the manufacturing cost is low, and the required structure space of the crown 200 is small.

[0102] It should be noted that the embodiment of the present application can split the crown 200 into an independent key cap 210 and a key rod 220, and the key cap 210 and the key rod 220 can be connected by interference riveting, threading, insert injection molding, nano injection molding, mechanical knob, interference mechanical method and dispensing process, etc. to ensure the relative stability between the key cap 210 and the key rod 220, thereby ensuring the reliability of the crown 200.

[0103] It should be understood that in the embodiment provided by the present application, the contact position between the key rod 220 and the key cap 210 can be insulated by PVD treatment, thereby preventing electrochemical corrosion between the key cap 210 and the key rod 220 during long-term wear.

[0104] It should be understood that in specific embodiments, a connecting mechanism can be arranged on the inner surface of the first side plate 212 of the keycap 210 and the outer surface of the second side plate 2222 of the rod connecting portion 222 to realize the fixed connection of the keycap 210 and the key rod 220. In other embodiments, a connecting mechanism can be arranged on the inner surface of the first top plate 211 of the keycap 210 and the outer surface of the second top plate 2221 of the rod connecting portion 222 to realize the fixed connection of the keycap 210 and the key rod 220. In still other embodiments, a corresponding connecting mechanism can be arranged on the inner surface of the first top plate 211 and the inner surface of the first side plate 212 of the keycap 210 and on the outer surface of the second top plate 2221 and the outer surface of the second side plate 2222 of the rod connecting portion 222 to realize the fixed connection of the keycap 210 and the key rod 220.

[0105] In some embodiments, the inner surface of the first side plate 212 of the keycap 210 is provided with a first connecting portion, the outer surface of the second side plate 2222 of the rod connecting portion 222 is provided with a second connecting portion, and the first connecting portion is fixedly connected with the second connecting portion. It should be understood that by arranging the first connecting portion on the keycap 210 and the second connecting portion on the key rod 220, the first connecting portion and the second connecting portion can be used in combination to realize the fixed connection of the two, thereby realizing the fixed connection of the keycap 210 and the key rod 220.

[0106] In one example, as shown in FIG. 3, the first connecting portion can be a rotating groove 310, and the second connecting portion can be a boss 320 matched with the rotating groove 310, and the boss 320 can rotate into the rotating groove 310.

[0107] It should be noted that the positions of the rotating groove 310 and the boss 320 can be interchanged, for example, the first connecting portion can be the boss 320, and the second connecting portion can be the rotating groove 310.

[0108] It should be understood that in this implementation, the first connecting portion and the second connecting portion can be fixedly connected by the matching use of the boss 320 and the rotating groove 310, that is, by mechanical rotation, thereby realizing the fixed connection between the keycap 210 and the key rod 220.

[0109] As shown in FIGS. 2 and 3, the inner surface of the first side plate 212 of the key cap 210 is further provided with a first groove 330, and the outer surface of the second side plate 2222 of the stem connecting portion 222 is further provided with a second groove 340, the projection of the second groove 340 on the first side plate 212 at least partially overlaps the first groove 330, or the projection of the first groove 330 on the second side plate 2222 at least partially overlaps the second groove 340. It should be understood that the number of the first groove 330 and the second groove 340 can be multiple, and multiple first grooves 330 can be arranged along the inner surface of the first side plate 212, and multiple second grooves 340 can be arranged along the outer surface of the second side plate 2222. The number of the first groove 330 and the second groove 340 shown in FIGS. 2 and 3 is 4.

[0110] By arranging the first groove 330 and the second groove 340, and the projection of the second groove 340 on the first side plate 212 at least partially overlaps the first groove 330, so that when the key cap 210 and the key stem 220 are assembled, there is a combined gap (as shown by the dashed line in (a) of FIG. 2) between the key cap 210 and the key stem 220. When the key stem 220 is assembled with the key cap 210 by rotating, the combined gap can be glued, so that the first side plate 212 of the key cap 210 and the second side plate 2222 of the stem connecting portion 222 can be bonded together, avoiding the relative rotation of the key cap 210 and the key stem 220, and ensuring the reliability of the crown 200.

[0111] In some embodiments, the inner surface of the first top plate 211 of the key cap 210 can be subjected to glue dispensing treatment, and / or the outer surface of the second top plate 2221 of the stem connecting portion 222 can be subjected to glue dispensing treatment (the glue dispensing position can refer to the position shown by the dashed line in (a) of FIG. 3), so as to increase the bonding stability of the key cap 210 and the key stem 220, and ensure the reliability of the crown 200.

[0112] In some embodiments, the inner surface of the first top plate 211 of the key cap 210 can be subjected to laser engraving treatment before glue dispensing, and / or the outer surface of the second top plate 2221 of the stem connecting portion 222 can be subjected to laser engraving treatment before glue dispensing. By laser engraving treatment, the texture of the inner surface of the first top plate 211 of the key cap 210 and / or the texture of the outer surface of the second top plate 2221 of the stem connecting portion 222 are increased, so as to further increase the bonding stability of the key cap 210 and the key stem 220, and further ensure the reliability of the crown 200.

[0113] FIGS. 4-6 are schematic structural diagrams of another example crown according to embodiments of the present application. FIG. 4 is a schematic structural diagram of the crown as a whole, FIG. 5 is an exploded view of the crown shown in FIG. 4, and FIG. 6(a) is a schematic cross-sectional view of the crown, FIG. 6(b) is a schematic structural diagram of the key stem, and FIG. 6(c) is a schematic structural diagram of the key cap.

[0114] In the crown 200 shown in FIGS. 4-6, the first connecting portion provided on the inner surface of the first side plate 212 of the key cap 210 can be a first thread structure 410 provided in the circumferential direction, and the second connecting portion provided on the outer surface of the second side plate 2222 of the stem connecting portion 222 can be a second thread structure 420 provided in the circumferential direction.

[0115] It should be noted that the positions of the first thread structure 410 and the second thread structure 420 can be interchanged, for example, the first connecting portion can be the second thread structure 420, and the second connecting portion can be the first thread structure 410.

[0116] It should be understood that in this implementation, the first thread structure 410 can be rotatably embedded in the second thread structure 420 (as shown by the dashed line in FIG. 6(a)), achieving fixed connection between the key cap 210 and the key stem 220. In addition, when the assembly of the key cap 210 and the key stem 220 is completed, there is no assembly gap between the key cap 210 and the key stem 220 from the appearance (as shown in FIG. 4), which is more aesthetically pleasing.

[0117] For example, as shown in FIGS. 5 and 6, the inner surface of the first side plate 212 is provided with a first extension 430 provided in the axial direction, and the outer surface of the second side plate 2222 is provided with a second extension 440 provided in the axial direction. The axial direction can be understood as the length direction of the key stem 220 or the direction of the rotation axis of the crown 200.

[0118] It should be understood that the number of the first extension 430 and the second extension 440 can be one or more, and the first extension 430 and the second extension 440 can be used to hide the hot-melt adhesive. By providing the first extension 430 and the second extension 440, when hot-melt adhesive is applied to the inner surface of the first top plate 211 of the key cap 210 (the position of the adhesive application can be referred to the position shown by the dashed line in FIG. 6(a)), the adhesive can overflow from the inner surface of the first top plate 211 to the first extension 430 and the second extension 440 when the key cap 210 and the key stem 220 are assembled, so that the first side plate 212 of the key cap 210 and the second side plate 2222 of the stem connecting portion 222 can be tightly bonded, avoiding relative rotation between the key cap 210 and the key stem 220, and ensuring the reliability of the crown 200.

[0119] In some examples, the first extension 430 can be arranged on the inner surface of the first side plate 212 only, or the second extension 440 can be arranged on the outer surface of the second side plate 2222 only. By arranging the first extension 430 or the second extension 440, the connection stability between the first side plate 212 of the keycap 210 and the second side plate 2222 of the stem connecting portion 222 can be enhanced to a certain extent.

[0120] In some embodiments, the inner surface of the first side plate 212 of the keycap 210 can include the first thread structure 410 arranged in the circumferential direction and the first extension 430 arranged in the axial direction, and the outer surface of the second side plate 2222 of the stem connecting portion 222 can include the second thread structure 420 arranged in the circumferential direction and the second extension 440 arranged in the axial direction. It should be understood that the axial direction can be understood as the length direction of the key stem 220 or the direction of the rotation axis of the crown 200, and the circumferential direction can be understood as the direction around the rotation axis.

[0121] For example, in order to further enhance the connection stability between the keycap 210 and the key stem 220, the key stem 220 can be dipped in part of the green oil glue before being rotated into the keycap 210, and then the key stem 220 is rotated into the keycap 210. That is, before assembling the keycap 210 and the key stem 220, the first thread structure 410 and / or the second thread structure 420 can be glued at the thread position of the circumference, and then the keycap 210 and the key stem 220 are assembled to ensure the bonding effect and avoid relative rotation between the keycap 210 and the key stem 220, thereby ensuring the reliability of the crown 200.

[0122] FIGS. 7 and 8 are structural schematic diagrams of another example of a crown according to an embodiment of the present application. In FIG. 7, (a) is a structural schematic diagram of the whole crown, and (b) is an exploded view of the crown. In FIG. 8, (a) is a sectional view of the crown, (b) is a structural schematic diagram of the key stem, and (c) is a structural schematic diagram of the keycap and the plastic connecting piece.

[0123] In the crown 200 shown in FIGS. 7 and 8, the crown 200 can further include a plastic connecting piece 230 in addition to the keycap 210 and the key stem 220. That is, the crown 200 includes the keycap 210, the key stem 220, and the plastic connecting piece 230. The structure of the keycap 210 and the key stem 220 can refer to the related description in FIGS. 2 and 3 above. The plastic connecting piece 230 is located between the keycap 210 and the key stem 220, and the plastic connecting piece 230 is connected with the stem connecting portion 222 of the key stem 220.

[0124] It should be understood that the plastic connecting piece 230 can be connected between the keycap 210 and the rod connecting portion 222 of the key rod 220. The keycap 210 and the key rod 220 can be fixedly connected through the plastic connecting piece 230.

[0125] For example, the material of the plastic connecting piece 230 can be polyphenylene sulfide (PPS) combined with 20% glass fiber.

[0126] It should be noted that the plastic connecting piece mainly plays a role in connecting the keycap and the key rod, that is, mainly plays a connecting role, and its material is mainly plastic material, and of course other types of materials can also be used. In this application, the material is mainly plastic material, but in some other embodiments, it can also not be plastic material.

[0127] In some embodiments, as shown in (b) of FIG. 7, the plastic connecting piece 230 includes a third top plate 231 and a third side plate 232, and the third top plate 231 and the third side plate 232 form a connecting piece groove 203; the connecting piece groove 203 is located in the keycap groove 201, and the key rod groove 202 is located in the connecting piece groove 203.

[0128] For example, the third top plate 231 includes an outer surface and an inner surface, the outer surface of the third top plate 231 is the outward-facing surface, that is, the surface close to the keycap 210; the inner surface of the third top plate 231 is the inward-facing surface, that is, the surface close to the key rod 220. Similarly, the third side plate 232 also includes two surfaces, which are the outer surface of the third side plate 232 and the inner surface of the third side plate 232, the outer surface of the third side plate 232 is the surface close to the keycap 210, and the inner surface of the third side plate 232 is the surface close to the key rod 220.

[0129] The third top plate 231 and the third side plate 232 form the connecting piece groove 203, which can be understood as: the inner surface of the third top plate 231 and the inner surface of the third side plate 232 can form the connecting piece groove 203. The connecting piece groove 203 can accommodate part of the key rod 220.

[0130] For example, part or all of the rod connecting portion 222 of the key rod 220 can be located inside the connecting member groove 203, and part or all of the plastic connecting member 230 can be located inside the key cap groove 201. It can be understood that the outer surface of the second top plate 2221 is in contact with the inner surface of the third top plate 231, the outer surface of the second side plate 2222 is in contact with the inner surface of the third side plate 232, and the rod connecting portion 222 can be embedded inside the connecting member groove 203; the outer surface of the third top plate 231 is in contact with the inner surface of the first top plate 211, and the outer surface of the third side plate 232 is in contact with the inner surface of the first side plate 212, and the plastic connecting member 230 can be embedded inside the key cap groove 201.

[0131] It should be understood that the key rod groove 202, the key cap groove 201 and the connecting member groove 203 are oriented in the same direction, for example, the key rod groove 202, the key cap groove 201 and the connecting member groove 203 are all oriented towards the balance wheel.

[0132] In some embodiments, the inner surface of the third side plate 232 of the plastic connecting member 230 is provided with a third connecting portion, and the outer surface of the second side plate 2222 of the rod connecting portion 222 is provided with a fourth connecting portion, and the third connecting portion and the fourth connecting portion are fixedly connected. It should be understood that by providing the third connecting portion on the plastic connecting member 230 and the fourth connecting portion on the key rod 220, the third connecting portion and the fourth connecting portion can be used together to achieve fixed connection, thereby achieving fixed connection between the plastic connecting member 230 and the key rod 220, and finally achieving fixed connection between the key cap 210 and the key rod 220.

[0133] For example, as shown in FIG. 8, the third connecting portion is a guide table 510, and the fourth connecting portion is a guide groove 520, and the guide table 510 is clamped with the guide groove 520.

[0134] It should be noted that the positions of the guide table 510 and the guide groove 520 can be interchanged, for example, the third connecting portion can be the guide groove 520, and the fourth connecting portion can be the guide table 510.

[0135] It should be understood that in this implementation, the fixed connection between the plastic connecting member 230 and the key rod 220 can be achieved by the cooperation of the guide table 510 and the guide groove 520, i.e. the guide table 510 is clamped into the guide groove 520, thereby preventing relative movement between the plastic connecting member 230 and the key rod 220.

[0136] In some embodiments, the inner surface of the first side plate 212 of the keycap 210 is provided with a fifth connecting part, the outer surface of the third side plate 232 of the plastic connecting piece 230 is provided with a sixth connecting part, and the fifth connecting part is fixedly connected with the sixth connecting part. It should be understood that by providing the fifth connecting part on the keycap 210 and the sixth connecting part on the plastic connecting piece 230, the fifth connecting part and the sixth connecting part can be used in combination to achieve fixed connection, thereby achieving fixed connection of the keycap 210 and the plastic connecting piece 230, and finally achieving fixed connection of the keycap 210 and the key rod 220.

[0137] For example, the fifth connecting part can be a boss structure, and the sixth connecting part can be a recess structure, or the fifth connecting part can be a recess structure, and the sixth connecting part can be a boss structure. By using the boss structure and the recess structure in combination, the fixed connection between the plastic connecting piece 230 and the keycap 210 can be achieved. It should be understood that in some embodiments, the keycap 210 and the plastic connecting piece 230, and the plastic connecting piece 230 and the key rod 220 can also be fixedly connected by the glue dispensing process.

[0138] In some embodiments, the plastic connecting piece 230 and the keycap 210 can be fixedly connected by a nano injection molding process or an insert injection molding process, and the plastic connecting piece 230 can be fixedly connected with the rod connecting part 222 of the key rod 220 by the glue dispensing process. In the watch crown 200 shown in FIGS. 7 and 8, when assembling the watch crown 200, the nano injection molding process can be used first to assemble the plastic connecting piece 230 and the keycap 210 together, and then the glue dispensing process is used to bond the plastic connecting piece 230 and the rod connecting part 222 of the key rod 220 together.

[0139] The nano injection molding process refers to nano molding technology (NMT), which is a process of combining metal and plastic with nano technology, that is, the metal surface is first treated by nanoization, and then the plastic is directly injection molded on the metal surface, so that the metal and the plastic can be integrally molded, and finally combined into one product. It should be understood that "nano" referred to herein refers to a microporous process, that is, the metal surface is treated by a specific solution to form micropores at the nano level, and the main purpose is to better combine the metal surface with the plastic and improve the connection strength.

[0140] The insert injection molding process is a process of fixing an insert in a suitable position in an injection mold, then injecting plastic to form, and after opening the mold, the insert is tightly buried in the plastic to obtain a product with inserts such as threads, electrodes, etc.

[0141] For example, the inner surface of the third top plate 231 of the plastic connecting piece 230 can be subjected to dispensing treatment, and / or the outer surface of the second top plate 2221 of the rod connecting portion 222 can be subjected to dispensing treatment (the dispensing position can refer to the position shown by the dashed line in (a) of FIG. 8), so as to increase the bonding stability of the plastic connecting piece 230 and the key rod 220, and further guarantee the reliability of the crown 200.

[0142] It should be understood that, by arranging the guide table 510 and the guide groove 520, on one hand, the relative rotation of the key rod 220 and the plastic connecting piece 230 can be prevented, and on the other hand, the inner surface of the third top plate 231 of the plastic connecting piece 230 can be subjected to dispensing, and / or the outer surface of the second top plate 2221 of the rod connecting portion 222 can be subjected to dispensing, and when the plastic connecting piece 230 and the key rod 220 are assembled, the glue on the inner surface of the third top plate 231 can overflow upward to the space between the guide table 510 and the guide groove 520, so as to further increase the connection stability of the plastic connecting piece 230 and the key rod 220.

[0143] For example, the inner surface of the third top plate 231 of the plastic connecting piece 230 can be subjected to laser engraving treatment before dispensing, and / or the outer surface of the second top plate 2221 of the rod connecting portion 222 can be subjected to laser engraving treatment before dispensing, so as to increase the texture of the inner surface of the third top plate 231 of the plastic connecting piece 230 and / or the texture of the outer surface of the second top plate 2221 of the rod connecting portion 222, and further increase the bonding stability of the plastic connecting piece 230 and the key rod 220, and further guarantee the reliability of the crown 200.

[0144] In other embodiments, the rod connecting portion 222 of the key rod 220 and the plastic connecting piece 230 can be fixedly connected through a nano-injection molding process or an insert injection molding process, and the plastic connecting piece 230 can be fixedly connected with the key cap 210 through a dispensing process.

[0145] FIGS. 9 and 10 are structural schematic diagrams of another example crown according to an embodiment of the present application. In (a) of FIG. 9, a structural schematic diagram of the crown is shown, and in (b) of FIG. 9, an exploded view of the crown is shown. In (a) of FIG. 10, a sectional view of the crown is shown, in (b) of FIG. 10, a structural schematic diagram of the key rod is shown, and in (c) of FIG. 10, a structural schematic diagram of the plastic connecting piece is shown.

[0146] For example, in the crown 200 shown in FIGS. 9 and 10, when the crown 200 is assembled, the plastic connecting piece 230 and the rod connecting portion 222 of the key rod 220 can be assembled together by using an insert injection molding process, and then the plastic connecting piece 230 and the key cap 210 can be bonded together by using a dispensing process.

[0147] Exemplarily, the outer surface of the third top plate 231 of the plastic connecting piece 230 can be subjected to dispensing treatment, and / or the inner surface of the first top plate 211 of the keycap 210 can be subjected to dispensing treatment (the dispensing position can refer to the position shown by the dashed line in (a) of FIG. 10), so as to increase the bonding stability of the plastic connecting piece 230 and the keycap 210, and further guarantee the reliability of the crown 200.

[0148] Exemplarily, the outer surface of the third top plate 231 of the plastic connecting piece 230 can be subjected to laser engraving (i.e., laser carving) treatment and then subjected to dispensing, and / or the inner surface of the first top plate 211 of the keycap 210 can be subjected to laser engraving (i.e., laser carving) treatment and then subjected to dispensing. The laser engraving treatment increases the texture of the outer surface of the third top plate 231 of the plastic connecting piece 230 and / or the texture of the inner surface of the first top plate 211 of the keycap 210, so as to further increase the bonding stability of the plastic connecting piece 230 and the keycap 210, and further guarantee the reliability of the crown 200.

[0149] In some embodiments, as shown in FIG. 10, the second side plate 2222 of the rod connecting portion 222 of the key rod 220 can be provided with a notch portion 610, and the third side plate 232 of the plastic connecting piece 230 can be provided with a filling portion 620 corresponding to the notch portion 610, so that the key rod 220 can be connected to the plastic connecting piece 230 through an insert injection molding process, to realize the fixed connection between the key rod 220 and the plastic connecting piece 230. Further, the fixed connection between the plastic connecting piece 230 and the keycap 210 can be realized through a dispensing process.

[0150] FIGS. 11 and 12 are structural schematic diagrams of another example crown according to an embodiment of the present application. In (a) of FIG. 11, a structural schematic diagram of the whole crown is shown, and in (b) of FIG. 11, an exploded view of the crown is shown. In (a) of FIG. 12, a sectional view of the crown is shown, in (b) of FIG. 12, a structural schematic diagram of a key rod is shown, and in (c) of FIG. 12, a structural schematic diagram of a keycap is shown.

[0151] In some embodiments, as shown in FIGS. 11 and 12, the rod connecting portion 222 of the key rod 220 can be fastened in the interior of the keycap 210 through interference fit. That is, the rod connecting portion 222 of the key rod 220 can be fastened in the interior of the keycap groove 201 through interference fit.

[0152] For example, to create an interference fit, the stem connection portion 222 can be cooled to reduce the size of the stem connection portion 222 in at least one direction. The cooled stem connection portion 222 is introduced into the keycap recess 201 and allowed to return to room temperature, causing the stem connection portion 222 to expand to a slightly larger size, thereby forcing the outer surface of the second side plate 2222 of the stem connection portion 222 against the inner surface of the first side plate 212 of the keycap 210. For another example, the keycap 210 can be heated to expand the size of the keycap recess 201 so that the stem connection portion 222 is introduced therein. Once the keycap 210 is cooled, the keycap recess 201 will contract to a smaller size, thereby forcing the inner surface of the first side plate 212 of the keycap 210 against the outer surface of the second side plate 2222 of the stem connection portion 222.

[0153] In some embodiments, the inner surface of the first top plate 211 of the keycap 210 can be subjected to a dispensing process, and / or the outer surface of the second top plate 2221 of the stem connection portion 222 can be subjected to a dispensing process (the dispensing position can refer to the position shown by the dashed line in (a) of FIG. 12), thereby being able to strengthen the bonding stability of the keycap 210 and the key stem 220, and guarantee the reliability of the crown 200.

[0154] In some embodiments, the inner surface of the first top plate 211 of the keycap 210 can be subjected to a laser engraving process before being subjected to a dispensing process, and / or the outer surface of the second top plate 2221 of the stem connection portion 222 can be subjected to a laser engraving process before being subjected to a dispensing process. By means of the laser engraving process, the texture of the inner surface of the first top plate 211 of the keycap 210 and / or the texture of the outer surface of the second top plate 2221 of the stem connection portion 222 are increased, thereby further increasing the bonding stability of the keycap 210 and the key stem 220, and further guaranteeing the reliability of the crown 200.

[0155] In some embodiments, as shown in FIG. 12, the inner surface of the first side plate 212 of the keycap 210 is provided with a protrusion 710, and the outer surface of the second side plate 2222 of the stem connection portion 222 is provided with a recess 720, and the protrusion 710 is engaged in the recess 720.

[0156] It should be understood that the number of protrusions 710 and recesses 720 can be multiple, and multiple protrusions 710 can be arranged along the inner surface of the first side plate 212, and multiple recesses 720 can be arranged along the outer surface of the second side plate 2222, and the multiple protrusions 710 and the multiple recesses 720 are matched one by one and engaged together, thereby avoiding relative rotation of the keycap 210 and the key stem 220.

[0157] It should be noted that the positions of the protrusion 710 and the recess 720 can be interchanged, for example, the inner surface of the first side plate 212 of the key cap 210 is provided with the recess 720, and the outer surface of the second side plate 2222 of the rod connecting portion 222 is provided with the protrusion 710.

[0158] It should be understood that in this implementation, by clamping the protrusion 710 in the recess 720, the fixed connection between the key cap 210 and the key rod 220 is achieved, and rotation between the key cap 210 and the key rod 220 is prevented.

[0159] In some embodiments, in the watch crown 200 shown in FIGS. 2-12, the watch crown 200 can further include a plastic structure. The plastic structure is fixed in the key rod groove 202 and is sleeved on the outer periphery of the key rod 220. The plastic structure can reduce the damping feeling of the user when rotating the watch crown, thereby improving the user experience. For example, the plastic structure can be made of polyformaldehyde (POM) or poly ether ether ketone (PEEK).

[0160] In some embodiments, in the watch crown 200 shown in FIGS. 2-12, the watch crown 200 can further include a bar pipe. Part of the bar pipe can be located in the key rod groove 202 and is sleeved on the outer periphery of the key rod 220. For example, the bar pipe can be made of a material similar to the key rod 220, such as stainless steel.

[0161] FIGS. 13 and 14 are structural schematic diagrams of another example of a watch crown according to embodiments of the present application. In FIG. 13, (a) is a structural schematic diagram of the overall structure of the watch crown, and (b) is an exploded view of the watch crown. In FIG. 14, (a) is a cross-sectional schematic diagram of the watch crown, (b) is a structural schematic diagram of the key rod, and (c) is a structural schematic diagram of the key cap.

[0162] As shown in FIGS. 13 and 14, the watch crown 200 can include a key cap 210, a key rod 220, and a plastic structure 240. The key cap 210 includes a first top plate 211 and a first side plate 212, and the first side plate 212 and the first top plate 211 enclose a key cap groove 201. The inner surface of the first top plate 211 of the key cap 210 is provided with a threaded column 810, and the first end of the key rod 220 is provided with a threaded hole 820 corresponding to the threaded column 810.

[0163] The plastic structure 240 is fixed inside the key cap groove 201 of the key cap 210 and is sleeved on the outer periphery of the key rod 220. The plastic structure 240 can reduce the damping feeling of the user when rotating the watch crown, thereby improving the user experience. For example, the plastic structure 240 can be made of polyformaldehyde POM or poly ether ether ketone PEEK.

[0164] The key rod 220 can pass through the plastic structure 240 and be connected with the threaded column 810 of the key cap 210 through the threaded hole 820 (as shown by the dashed area in (a) of FIG. 14), so as to realize the fixed connection of the key cap 210 and the key rod 220.

[0165] In some embodiments, the inner surface of the first top plate 211 of the key cap 210 can be sealed by glue-dropping (the position where the key cap 210 and the key rod 220 are combined is sealed), so as to prevent the electrochemical corrosion problem caused by the long-term accumulation of sweat and guarantee the reliability of the crown 200.

[0166] In some embodiments, the crown 200 can further include a barb tube, part of which can be located in the plastic structure 240 and sleeved on the outer periphery of the key rod 220. For example, the barb tube can be made of the same material as the key rod 220, such as stainless steel.

[0167] It should be understood that the key cap 210 and the key rod 220 are two independent components, which are independently arranged by being separated, so that the key cap 210 and the key rod 220 can be made of different materials. For example, the key cap 210 can be made of a material capable of being subjected to anodic oxidation treatment or a material easy to be colored, and the key rod 220 can be made of a material having certain mechanical strength, so as to allow the crown 200 to have any color and guarantee the mechanical reliability of the crown 200, thereby realizing the balance between the appearance and the mechanical performance.

[0168] For example, the position where the key rod 220 contacts the key cap 210 can be subjected to insulation PVD treatment, so as to prevent the electrochemical corrosion between the key cap 210 and the key rod 220 during long-term wearing.

[0169] In other embodiments, the inner surface of the first top plate 211 of the key cap 210 can be provided with a screw hole, and the first end of the key rod 220 can be provided with a threaded column corresponding to the screw hole; or the inner surface of the first top plate 211 of the key cap 210 can be provided with a screw hole, and the first end of the key rod 220 can be provided with a threaded column corresponding to the screw hole.

[0170] FIGS. 15 and 16 are structural schematic diagrams of another example of the crown according to the embodiments of the present application. In FIG. 15, (a) is a structural schematic diagram of the whole crown, and (b) is an exploded view of the crown. In FIG. 16, (a) is a sectional view of the crown, (b) is a structural schematic diagram of the key rod, and (c) is a structural schematic diagram of the key cap.

[0171] In the crown 200 shown in FIG. 15 and FIG. 16, the inner surface of the first top plate 211 of the button cap 210 is provided with a screw hole 910, and the first end of the button rod 220 is provided with a threaded column 920 corresponding to the screw hole 910. The button rod 220 can pass through the plastic structure 240 and be connected with the screw hole 910 of the button cap 210 through the threaded column 920 (as shown by the dashed area in (a) of FIG. 16), so as to realize the fixed connection of the button cap 210 and the button rod 220.

[0172] The crown assembly provided by the embodiments of the present application is described in detail above in combination with FIG. 2 to FIG. 16.

[0173] It should be understood that, in some embodiments, the combination mode between the button cap 210 and the button rod 220 can be the combination of two components, as shown in FIG. 2, FIG. 5, FIG. 11, FIG. 13, and FIG. 15, the button cap 210 and the button rod 220 can be directly connected together by setting corresponding connecting structures on the button cap 210 and the button rod 220, without the help of other connecting members (such as the plastic connecting member 230).

[0174] In other embodiments, the combination mode between the button cap 210 and the button rod 220 can be the combination of three components, that is, the button cap 210 and the button rod 220 can be fixedly connected through the setting of a connecting member (such as the plastic connecting member 230), as shown in FIG. 7 and FIG. 9, the button cap 210 and the button rod 220 can be fixedly connected through the plastic connecting member 230.

[0175] In other embodiments, the combination mode between the button cap 210 and the button rod 220 can be the combination of four or more components, that is, a plurality of (two or more) connecting members can be set between the button cap 210 and the button rod 220 to realize the fixed connection between the button cap 210 and the button rod 220.

[0176] It should be noted that no matter how many connecting members are set between the button cap 210 and the button rod 220, the structure of the connecting member can refer to the structure of the plastic connecting member 230, that is, the inner / outer surface of the connecting member can be respectively provided with corresponding clamping structures (such as recessed or protruding structures) to realize the fixed connection between the connecting member and other components.

[0177] Exemplarily, the first connecting member and the second connecting member can be arranged between the keycap 210 and the key stem 220, and the first connecting member can be the plastic connecting member 230. The first connecting member can include a first connecting member groove (i.e., the connecting member groove 203), and the second connecting member can include a second connecting member groove. The first connecting member groove and the second connecting member groove are oriented in the same direction as the key stem groove 202 or the keycap groove 201, thus forming a structure similar to the groove-in-groove structure of FIG. 7. That is, the first connecting member can be located between the keycap 210 and the second connecting member, and the second connecting member can be located between the first connecting member and the key stem 220. The first connecting member groove can be located in the keycap groove 201, the second connecting member groove can be located in the first connecting member groove, and the key stem groove 202 can be located in the second connecting member groove. Furthermore, the inner and outer surfaces of the first connecting member and / or the second connecting member can be provided with corresponding engagement structures, so that the first connecting member is engaged in the keycap 210, the second connecting member is engaged in the first connecting member, and the key stem 220 is engaged in the second connecting member. In this way, the keycap 210 and the key stem 220 are fixedly connected through nesting and engagement.

[0178] The above merely provides a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in the present application, which should be encompassed in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A crown assembly, characterized by, The application relates to a watch crown assembly. The watch crown assembly comprises a key cap (210), a key rod (220), and a plastic connecting piece (230). The key cap (210) comprises a first top plate (211) and a first side plate (212), and the first side plate (212) and the first top plate (211) enclose a key cap groove (201). The key rod (220) comprises a rod body (221) and a rod connecting part (222). The rod body (221) comprises a first end and a second end, the rod connecting part (222) comprises a second top plate (2221) and a second side plate (2222), the first end of the rod body (221) is connected to the second top plate (2221), and the second side plate (2222) and the second top plate (2221) enclose a key rod groove (202).

2. The crown assembly of claim 1, wherein, Part of the key rod (220) is located inside the key cap groove (201), and the key rod groove (202) and the key cap groove (201) are in the same direction.

3. The crown assembly of claim 1 or 2, wherein, The material of the key cap (210) comprises any one of the following: aluminum, magnesium, titanium, zinc, and nickel.

4. The crown assembly of claim 3, wherein, The inner surface of the first side plate (212) of the key cap (210) is provided with a first connecting part, the outer surface of the second side plate (2222) of the rod connecting part (222) is provided with a second connecting part, and the first connecting part is fixedly connected with the second connecting part.

5. The crown assembly of claim 4, wherein, The first connecting part is a rotating groove (310), the second connecting part is a boss (320) matched with the rotating groove (310), and the boss (320) can rotate into the rotating groove (310).

6. The crown assembly of claim 3, wherein, The inner surface of the first side plate (212) of the key cap (210) is further provided with a first groove (330), the outer surface of the second side plate (2222) of the rod connecting part (222) is further provided with a second groove (340), and the projection of the first side plate (212) at least partially overlaps the first groove (330).

7. The crown assembly of claim 6, wherein, The first connecting part is a first thread structure (410) arranged in the circumferential direction, the second connecting part is a second thread structure (420) arranged in the circumferential direction, the key cap (210) is rotated into the second thread structure (420) through the first thread structure (410), so that the key cap (210) is fixedly connected with the key rod (220).

8. The crown assembly of claim 1 or 2, wherein, The inner surface of the first side plate (212) is provided with a first extension section (430) arranged in the axial direction, and the outer surface of the second side plate (2222) is provided with a second extension section (440) arranged in the axial direction. The plastic connecting piece (230) is located between the key cap (210) and the key rod (220), and the plastic connecting piece (230) is connected with the rod connecting part (222) of the key rod (220).

9. The crown assembly of claim 8, wherein, The plastic connecting piece (230) comprises a third top plate (231) and a third side plate (232), and the third top plate (231) and the third side plate (232) enclose a connecting piece groove (203); The connecting piece groove (203) is located in the key cap groove (201), and the key rod groove (202) is located in the connecting piece groove (203).

10. The crown assembly of claim 8 or 9, wherein, The plastic connecting piece (230) is fixedly connected with the key cap (210) through a nano injection molding process or an insert injection molding process, and the plastic connecting piece (230) is fixedly connected with the rod connecting portion (222) of the key rod (220) through a dispensing process.

11. The crown assembly of claim 8 or 9, wherein, The plastic connecting piece (230) is fixedly connected with the key cap (210) through a nano injection molding process or an insert injection molding process, and the plastic connecting piece (230) is fixedly connected with the rod connecting portion (222) of the key rod (220) through a dispensing process.

12. The crown assembly of claim 9, wherein, A third connecting portion is arranged on an inner surface of the third side plate (232) of the plastic connecting piece (230), a fourth connecting portion is arranged on an outer surface of a second side plate (2222) of the rod connecting portion (222), and the third connecting portion is fixedly connected with the fourth connecting portion.

13. The crown assembly of claim 12, wherein, The third connecting portion is a guide table (510), the fourth connecting portion is a guide groove (520), and the guide table (510) is clamped with the guide groove (520).

14. The crown assembly of claim 9, wherein, A fifth connecting portion is arranged on an inner surface of the first side plate (212) of the key cap (210), a sixth connecting portion is arranged on an outer surface of the third side plate (232) of the plastic connecting piece (230), and the fifth connecting portion is fixedly connected with the sixth connecting portion.

15. The crown assembly of claim 1 or 2, wherein, The rod connecting portion (222) of the key rod (220) is fastened in the inside of the key cap (210) through interference fit.

16. The crown assembly of claim 15, wherein, A convex portion (710) is arranged on an inner surface of the first side plate (212) of the key cap (210), a concave portion (720) is arranged on an outer surface of the second side plate (2222) of the rod connecting portion (222), and the convex portion (710) is clamped in the concave portion (720).

17. A wearable device, comprising: The watch crown assembly comprises the watch crown assembly.

18. The wearable device of claim 17, wherein, The wearable device is a watch or a bracelet. The wearable device is a watch or a bracelet.

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