Wrist-worn device

Abstract

This invention proposes a wrist-wearing device, comprising: a main body and a wristband; the main body includes a middle frame and a cover plate, and also includes a slot disposed on one of the middle frame and the cover plate; the cover plate is fixed to the middle frame and has a through hole; the slot has a locking section and a free section, the through hole communicating with the free section; the wristband includes a headband with a buckle, the buckle being movably disposed within the slot between a locking position and a free position; the buckle in the locking position engages within the locking section, and the buckle in the free position engages within the free section. The wrist-wearing device of this invention has the advantages of convenient wearing and removal and strong applicability.

Description

Technical Field

[0001] This invention relates to the field of wearable device technology, and more specifically, to a wrist-worn device. Background Technology

[0002] In related technologies, the wristband of a wrist-worn device is usually fixedly connected to the main body of the device. The wristband of the wrist-worn device is divided into two parts, one of which is detachably connected to the other. This makes the process of wearing and removing the device cumbersome and affects the user experience. Summary of the Invention

[0003] The present invention aims to at least partially solve one of the technical problems in the related art. To this end, embodiments of the present invention provide a wrist-worn device that is easy to put on and take off and has the advantage of wide applicability.

[0004] The wrist-worn device of this invention includes: a main body, the main body including a middle frame and a cover plate, the cover plate being fixed on the middle frame, the main body also including a slot, the slot being disposed on one of the middle frame and the cover plate, the cover plate having a through hole, the slot having a snap-fit ​​section and a free section, the through hole communicating with the free section; and a wristband, the wristband including a headband, the headband having a buckle, the buckle being movably disposed in the slot between a snap-fit ​​position and a free position, the buckle located in the snap-fit ​​position engaging in the snap-fit ​​section, and the buckle located in the free position engaging in the free section.

[0005] The wrist-worn device of this invention has the advantages of being easy to put on and take off and being highly applicable.

[0006] In some embodiments, the wrist-worn device of the present invention further includes a toggle switch, which is movably disposed on the cover plate between a locked position and a released position. At least a portion of the toggle switch in the locked position engages within the free section, and at least a portion of the toggle switch in the released position disengages from the free section. The movement direction of the toggle switch is perpendicular to the movement direction of the latch.

[0007] In some embodiments, the wrist-worn device of the present invention further includes a spring disposed between the middle frame and the toggle switch, wherein when the toggle switch is in the release position, the spring is in a deformed state to push the toggle switch to the locking position.

[0008] In some embodiments, the wrist-worn device of the present invention further includes a guide shaft, the guide shaft being disposed on one of the middle frame and the key, and the other of the middle frame and the key being provided with a guide hole that mates with the guide shaft.

[0009] In some embodiments, there are multiple guide shafts, at least one spring, and one spring is sleeved on one of the guide shafts.

[0010] In some embodiments, the cover plate has a first surface, the perforation is formed on the first surface, the head piece has a second surface, the snap fastener is disposed on the second surface, and the first surface and the second surface are in contact.

[0011] In some embodiments, the first surface is a convex arc surface and the second surface is a concave arc surface.

[0012] In some embodiments, the buckle includes a snap-fit ​​portion and a connecting portion, wherein a clearance groove is formed between the snap-fit ​​portion and the second surface.

[0013] In some embodiments, the buckle is rotatably disposed in the slot between the engaged position and the free position about its rotation axis, and the extension direction of the center line of the body is consistent with the extension direction of the rotation axis of the buckle.

[0014] In some embodiments, the outer perimeter of the cross-section of the middle frame is circular or square.

[0015] In some embodiments, the latch includes a first latch and a second latch, the first latch and the second latch being arranged at a distance from each other in the moving direction of the latch; the engaging section includes a first engaging section and a second engaging section; and the free section includes a first free section and a second free section.

[0016] The first latch located at the snap-fit ​​position engages within the first snap-fit ​​section, the first latch located at the free position engages within the first free section, the second latch located at the snap-fit ​​position engages within the second snap-fit ​​section, and the second latch located at the free position engages within the second free section.

[0017] In some embodiments, the toggle switch includes a switch body, a first latch, and a second latch. The switch body is connected between the first latch and the second latch. When the switch is in the locked position, the first latch engages within the first free section and abuts against the first latch in the direction of movement of the latch. When the switch is in the released position, the first latch disengages from the first free section. When the switch is in the locked position, the second latch abuts against the second latch in the direction of movement of the switch.

[0018] In some embodiments, the wrist-worn device of the present invention further includes a keycap connected to the key body, and the cover plate is provided with a receiving groove for placing the keycap, the receiving groove being in communication with the slot. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the wrist-worn device according to an embodiment of the present invention.

[0020] Figure 2 This is a schematic diagram of the structure of the wristband device head piece according to an embodiment of the present invention.

[0021] Figure 3 This is a schematic diagram of the structure of the wrist-worn device keypad according to an embodiment of the present invention.

[0022] Figure 4 This is a schematic diagram of the structure of the cover plate of the wrist-worn device according to an embodiment of the present invention.

[0023] Figure 5 This is a schematic diagram of the cover plate of the wrist-worn device according to an embodiment of the present invention from another perspective.

[0024] Figure 6 This is a schematic diagram of the first state of the wrist-worn device according to an embodiment of the present invention.

[0025] Figure 7 This is a schematic diagram of the second state of the wrist-worn device according to an embodiment of the present invention.

[0026] Figure 8 This is a schematic diagram of the third state of the wrist-worn device according to an embodiment of the present invention.

[0027] Figure 9 This is a schematic diagram of the fourth state of the wrist-worn device according to an embodiment of the present invention.

[0028] Figure label:

[0029] 10 Main body; 11 Middle frame; 12 Cover plate; 121 Slot; 1211 Snap-fit ​​section; 1212 Free section;

[0030] 122; 123; 124;

[0031] Wristband 20; Head loop 21; Buckle 211; Snap-fit ​​part 2111; Connecting part 2112; First buckle 2113; Second buckle 2114; Second surface 212;

[0032] Key 30; Key body 301; First latch 302; Second latch 303;

[0033] Spring 40;

[0034] Guide shaft 50; guide hole 51;

[0035] 60mm clearance groove;

[0036] Keycap 70;

[0037] Through hole 80. Detailed Implementation

[0038] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0039] like Figures 1-9 As shown, the wrist-worn device of this embodiment includes a main body 10 and a wristband 20.

[0040] The main body 10 includes a middle frame 11 and a cover plate 12. The cover plate 12 is fixed on the middle frame 11. The main body 10 also includes a slot 121. The slot 121 is provided on one of the middle frame 11 and the cover plate 12. The cover plate 12 has a through hole 122. The slot 121 has a snap-fit ​​section 1211 and a free section 1212. The through hole 122 communicates with the free section 1212. The wristband 20 includes a head piece 21. The head piece 21 has a buckle 211. The buckle 211 is movably provided in the slot 121 between a snap-fit ​​position and a free position. The buckle 211 in the snap-fit ​​position is engaged in the snap-fit ​​section 1211. The buckle 211 in the free position is engaged in the free section 1212.

[0041] In other words, the card slot 121 can be located on the middle frame 11 or on the cover plate 12.

[0042] Preferably, the slot 121 is provided on the cover plate 12.

[0043] It should be noted that the cover plate 12 can be fixed to the middle frame 11 with screws, or the cover plate 12 can be fixed to the middle frame 11 with other fasteners, which facilitates the disassembly and assembly of the cover plate 12. The through hole 122 is connected to the free section 1212 so that the buckle 211 can pass through the through hole 122 and cooperate with the snap-fit ​​section 1211 to realize the snap-fit ​​function.

[0044] It is understood that when the wrist-worn device of the present invention is worn, the buckle 211 enters the free section 1212 of the slot 121 along the through hole 122. At this time, the buckle 211 is in the free position. Subsequently, the buckle 211 moves from the free section 1212 to the engaging section 1211 along the slot 121. At this time, the buckle 211 is in the engaging position, thereby completing the wearing.

[0045] When the wrist-worn device of this embodiment is removed, the buckle 211 moves along the slot 121 from the engaging section 1211 to the free section 1212, that is, from the engaging position to the free position. The buckle 211 exits the free section 1212 of the slot 121 along the through hole 122, thereby completing the removal.

[0046] It should be noted that when the buckle 211 is in the free position, the buckle 211 can enter and exit the free section 1212 of the slot 121 along the through hole 122. When the buckle 211 is in the snap-fit ​​position, the buckle 211 cooperates with the snap-fit ​​section 1211 of the slot 121, so that the buckle 211 cannot be disengaged from the slot 121, thereby connecting the wristband 20 to the main body 10.

[0047] Therefore, the wrist-worn device of the present invention has the advantages of being easy to put on and take off and being highly applicable.

[0048] In some embodiments, such as Figures 1-5 As shown, the wrist-worn device of this embodiment of the invention also includes a dial 30, which is movably disposed on the cover plate 12 between a locked position and a released position. At least a portion of the dial 30 in the locked position engages within the free section 1212, and at least a portion of the dial 30 in the released position disengages from the free section 1212. The moving direction of the dial 30 is perpendicular to the moving direction of the buckle 211.

[0049] Specifically, the dial 30 can move on the cover plate 12 to lock and release the head piece 21. That is, when the dial 30 is in the locked position, the buckle 211 is in the locking section 1211. At this time, the wristband 20 is in the locking state with the main body 10, realizing the wearing function. When the dial 30 is in the released position, the buckle 211 moves from the locking section 1211 to the free section 1212 and pulls the buckle 211 out from the through hole 122. At this time, the wristband 20 is separated from the main body 10, realizing the removal function.

[0050] It is understandable that, such as Figures 6-9 As shown, when the toggle switch 30 is in the locked position, it restricts the movement of the head piece 21, and the latch 211 on the head piece 21 is in the locked section, that is, the latch 211 cannot move from the locked section to the free section 1212. When the toggle switch 30 moves towards the middle frame 11 until it is in the released position, the latch 211 can move from the locked section to the free section 1212. In other words, the direction of movement of the toggle switch 30 is perpendicular to the direction of movement of the latch 211.

[0051] In some embodiments, such as Figures 1-9 As shown, the wrist-worn device of this embodiment of the invention also includes a spring 40, which is disposed between the middle frame 11 and the key 30. When the key 30 is in the released position, the spring 40 is in a deformed state so as to push the key 30 to the locked position.

[0052] It is understandable that when the key 30 is in the locked position, the spring 40 is in the initial state. When the key 30 is moved from the locked position to the released position by an external force, the spring 40 is deformed. When the key 30 is not subjected to an external force, the deformed spring 40 returns to the initial state. That is, the deformed spring 40 can push the key 30 from the released position to the locked position.

[0053] In some embodiments, such as Figure 1 and Figure 3 As shown, the wrist-worn device of this embodiment of the invention also includes a guide shaft 50, which is disposed on one of the middle frame 11 and the key 30, and the other of the middle frame 11 and the key 30 is provided with a guide hole 51 that cooperates with the guide shaft 50.

[0054] It is understandable that the guide shaft 50 is located on the middle frame 11, and the key 30 is provided with a guide hole 51 that mates with the guide shaft 50; or, the guide shaft 50 is located on the key 30, and the middle frame 11 is provided with a guide hole 51 that mates with the guide shaft 50.

[0055] In other words, when the guide shaft 50 is located on the middle frame 11, after the guide hole 51 on the key 30 cooperates with the guide shaft 50, the key 30 can move on the guide shaft 50, so that the key 30 can move closer to or away from the middle frame 11; or, when the guide shaft 50 is located on the key 30, after the guide hole 51 on the middle frame 11 cooperates with the guide shaft 50, the key 30 can drive the guide shaft 50 to move within the guide hole 51, so that the key 30 can move closer to or away from the middle frame 11.

[0056] Optionally, there may be multiple guide shafts 50, and at least one spring 40, with one spring 40 sleeved on one guide shaft 50.

[0057] like Figure 1 and Figure 3 As shown, when there is only one guide shaft 50 and the spring 40 is sleeved on the guide shaft 50, when the key 30 is in the released position, that is, after the key 30 moves towards the middle frame 11, the spring 40 is in a compressed state. At this time, the latch 211 can be moved from the latching section 1211 to the free section 1212, and the head piece 21 can be pulled out from the middle frame 11 to complete the removal function. Then, the key 30 moves away from the middle frame 11 under the elastic force of the spring 40 until the spring 40 returns to the initial state. At this time, the key 30 is in the locked position.

[0058] In other words, when it is necessary to wear it, insert the head piece 21 into the perforation 122 so that the buckle 211 abuts against the key 30. Then, continue to move the head piece 21 toward the middle frame 11, so that the key 30 moves toward the middle frame 11 against the elastic force of the spring 40. At this time, the buckle 211 moves within the free section 1212 until the key 30 is in the released position. Then, move the buckle 211 from the free section 1212 to the locking section 1211. After the buckle 211 separates from the key 30, the key 30 moves away from the middle frame 11 under the elastic force of the spring 40 until the spring 40 returns to its initial state, that is, the key 30 is in the locked position. At this time, the key 30 has a locking effect on the buckle 211 placed in the locking section 1211.

[0059] It is understandable that when there are multiple guide shafts 50, the stability of the key 30 during movement can be increased, and springs 40 that match multiple guide shafts 50 can be set to improve the efficiency of the key 30 during use. At the same time, the use effect of the key 30 can be guaranteed even if one of the springs 40 fails, thereby improving the practicality of the wrist-worn device of this embodiment of the invention.

[0060] In some embodiments, such as Figures 1-5 As shown, the cover plate 12 has a first surface 124, and a perforation 122 is formed on the first surface 124. The head piece 21 has a second surface 212, and a buckle 211 is provided on the second surface 212. The first surface 124 and the second surface 212 are in contact.

[0061] Specifically, the buckle 211 passes through the perforation 122, and after the first surface 124 and the second surface 212 come into contact, the buckle 211 can move between the free section 1212 and the locking section 1211, so that the cover plate 12 is always in contact with the head piece 21 during the process of putting on and taking off the wristband 20, thereby improving the stability of the wristband device of the present invention.

[0062] In some embodiments, such as Figure 1 As shown, the first surface 124 is a convex arc surface, and the second surface 212 is a concave arc surface.

[0063] It is understandable that the convex arc surface of the first surface 124 is matched with the concave arc surface of the second surface 212, thereby making the cover plate 12 and the head piece 21 fit together better.

[0064] In some embodiments, the latch 211 includes a latching portion 2111 and a connecting portion 2112, with a clearance groove 60 formed between the latching portion 2111 and the second surface 212.

[0065] Specifically, such as Figure 2 As shown, the clearance groove 60 provides clearance space for the latch 211 so that the latch 211 can move within the latch groove 121.

[0066] In some embodiments, the latch 211 is rotatably disposed in the slot 121 about its axis of rotation between a latched position and a free position.

[0067] It is understandable that, such as Figures 1-9 As shown, when the buckle 211 is in the slot 121, the first surface 124 contacts the second surface 212. At this time, the buckle 211 can rotate in the snap-fit ​​position and the free position. That is to say, at this time, the head piece 21 can rotate relative to the middle frame 11.

[0068] Optionally, the extension direction of the center line of the main body 10 is consistent with the extension direction of the rotation axis of the buckle 211.

[0069] In some embodiments, the outer perimeter of the cross-section of the middle frame 11 is circular or square.

[0070] It is understood that the outer periphery of the cross-section of the middle frame 11 can be set into different shapes depending on the product. That is, the outer periphery of the cross-section of the middle frame 11 can be set into a circle or a square, or other shapes, so as to be suitable for different products and increase the applicability of the wrist-worn device of the present invention.

[0071] It should be noted that the wrist-wearing device of this embodiment of the invention has the function of being put on and taken off through the cooperation of the cover plate and the head piece. Therefore, changing the outer periphery of the cross-section of the middle frame does not affect the function of the wrist-wearing device of this embodiment of the invention.

[0072] In some embodiments, the latch 211 includes a first latch 2113 and a second latch 2114, which are spaced apart in the moving direction of the latch 211. The engaging section 1211 includes a first engaging section 1211 and a second engaging section 1212, and the free section 1212 includes a first free section and a second free section. The first latch 2113 in the engaging position engages within the first engaging section 1211, and the first latch 2113 in the free position engages within the first free section. The second latch 2114 in the engaging position engages within the second engaging section 1211.

[0073] Specifically, such as Figures 6-9 As shown, the first buckle 2113 is located to the right of the second buckle 2114. During the process of putting on and taking off the buckle, after the first buckle 2113 and the second buckle 2114 are passed through the through hole 122, the first buckle 2113 is engaged in the first locking section 1211 and the second buckle 2114 is engaged in the second locking section 1211. When it is necessary to engage the buckle, rotate the head 21 so that the first buckle 2113 is engaged in the first free section and the second buckle 2114 is engaged in the second free section.

[0074] In some embodiments, such as Figure 1and Figure 3 As shown, the key 30 includes a key body 301, a first latch 302, and a second latch 303. The key body 301 is connected between the first latch 302 and the second latch 303. When the key 30 is in the locked position, the first latch 302 engages within the first free section and abuts against the first latch 2113 in the moving direction of the latch 211. When the key 30 is in the released position, the first latch 302 disengages from the first free section. When the key 30 is in the locked position, the second latch 303 abuts against the second latch 2114 in the moving direction of the key 30.

[0075] It is understandable that when the key 30 is in the locked position, the first latch 302 is placed in the first free section, the second latch 303 is placed in the second free section, and the side wall of the first latch 302 abuts against the side wall of the first latch 2113 to prevent the first latch 2113 from rotating. The side wall of the second latch 303 abuts against the side wall of the second latch 2114 to prevent the second latch 2114 from rotating, so as to realize the latch 211's locking function.

[0076] Specifically, the key body 301, the first latch 302, and the second latch 303 are all provided with guide holes 51. These guide holes 51 can match the guide shaft 50 on the middle frame 11 to improve the stability of the key 30 during movement. Specifically, the guide holes 51 on the key body 301 are circular, and the guide shaft 50 that mates with them is a round shaft. The guide holes 51 on the first latch 302 and the second latch 303 are square, and the shafts that mate with them are square shafts. A round shaft refers to a guide shaft 50 whose cross-sectional outline is circular, and a square shaft refers to a guide shaft 50 whose cross-sectional outline is square.

[0077] In some embodiments, the wrist-worn device of the present invention further includes a keycap 70, which is connected to the key body 301. The cover plate 12 is provided with a receiving groove 123 for placing the keycap 70, and the receiving groove 123 is connected to the slot 121.

[0078] Specifically, such as Figures 1-5 As shown, the receiving groove 123 and the card slot 121 are connected through the through hole 80. A part of the key body 301 passes through the through hole 80 and is connected to the key cap 70. The key cap 70 can move in the receiving groove 123 to drive the key 30 to move, so that the key 30 can move between the locked position and the released position, thereby realizing the wearing and removing function of the wrist-worn device in this embodiment of the invention.

[0079] It should be noted that the wrist-worn device in the embodiments of the present invention can be: a watch, a smart bracelet, a smartwatch, a wrist-worn heart rate monitoring device, a wrist-worn calling device, the wrist-worn end of a motion-sensing device, and other smart wearable devices worn on other parts of the body.

[0080] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0081] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0082] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0083] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0084] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0085] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A wrist-worn device, comprising: include: The main body includes a middle frame and a cover plate, the cover plate being fixed to the middle frame. The main body also includes a slot, which is disposed on one of the middle frame and the cover plate. The cover plate has a through hole, and the slot has a snap-fit ​​section and a free section, the through hole communicating with the free section. A wristband, the wristband including a headband, the headband having a buckle, the buckle being rotatably disposed in the slot between a engaged position and a free position about its rotation axis, the buckle in the engaged position engaging in the engaged section, the buckle in the free position engaging in the free section; A toggle switch is movably disposed on the cover plate between a locked position and a released position. At least a portion of the toggle switch in the locked position engages within the free section, and at least a portion of the toggle switch in the released position disengages from the free section. The direction of movement of the toggle switch is perpendicular to the direction of movement of the latch. A spring is disposed between the middle frame and the toggle switch, wherein when the toggle switch is in the release position, the spring is in a deformed state to push the toggle switch to the locking position; The latch includes a first latch and a second latch, which are spaced apart in the moving direction of the latch. The engaging section includes a first engaging section and a second engaging section, and the free section includes a first free section and a second free section. The first latch located at the snap-fit ​​position engages within the first snap-fit ​​section, the first latch located at the free position engages within the first free section, the second latch located at the snap-fit ​​position engages within the second snap-fit ​​section, and the second latch located at the free position engages within the second free section. The key includes a key body, a first latch, and a second latch. The key body is connected between the first latch and the second latch. When the key is in the locked position, the first latch of the key engages within the first free section and abuts against the first latch in the direction of movement of the latch. When the key is in the released position, the first latch of the key disengages from the first free section. When the key is in the locked position, the second latch of the key abuts against the second latch in the direction of movement of the key.

2. The wrist-worn device of claim 1, wherein, It also includes a guide shaft, which is disposed on one of the middle frame and the key, and the other of the middle frame and the key is provided with a guide hole that mates with the guide shaft.

3. The wrist-worn device of claim 2, There are multiple guide shafts, and at least one spring, with one spring sleeved on one of the guide shafts.

4. The wrist-worn device of claim 1, wherein, The cover plate has a first surface, the perforation is formed on the first surface, the head piece has a second surface, the buckle is provided on the second surface, and the first surface and the second surface are in contact.

5. The wrist-worn device of claim 4, wherein, The first surface is a convex arc surface, and the second surface is a concave arc surface.

6. The wrist-worn device of claim 4, wherein, The buckle includes a snap-fit ​​portion and a connecting portion, and an avoidance groove is formed between the snap-fit ​​portion and the second surface.

7. The wrist-worn device of claim 1, wherein, The extension direction of the center line of the main body is consistent with the extension direction of the rotation axis of the buckle.

8. The wrist-worn device of claim 1, wherein, The outer perimeter of the cross-section of the middle frame is circular or square.

9. The wrist-worn device of claim 1, wherein, It also includes keycaps, which are connected to the key body, and the cover plate is provided with a receiving groove for placing the keycaps, which is connected to the slot.

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