Rotating shaft assembly and intelligent glasses

Abstract

The utility model discloses a rotating shaft assembly and intelligent glasses, the rotating shaft assembly comprises a body and a rolling piece, and a glasses frame and glasses legs of the intelligent glasses are rotatably connected through the body. And the first device in the glasses frame is connected with the second device in the glasses leg through a transmission piece. The rolling piece is supported on the conveying piece and used for rotating when the conveying piece is pulled. In the application, in the folding or unfolding process of the glasses legs relative to the glasses frame, the transmission piece is driven to move, and the transmission piece can drive the rolling piece to rotate through the friction force between the transmission piece and the rolling piece, so that the transmission piece and the rolling piece do not relatively slide or basically do not relatively slide; and rolling friction is formed between the transmission piece and the rolling piece, so that abrasion to the transmission piece can be reduced, and the service life is prolonged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic devices, in particular to a rotating shaft assembly and smart glasses. BACKGROUND

[0002] With the rapid development of AI intelligence, the smart glasses market is expanding, and users' requirements for the functions of smart glasses are also increasing. In order to make smart glasses have more functions, it is necessary to increase an indefinite number of circuit boards and electronic devices such as cameras in the glasses. Due to the limitation of the shape of the glasses, each electronic device is mainly placed in the left and right legs and the frame of the glasses, and some electronic devices are electrically connected through transmission members.

[0003] Since the legs and the frame are connected through a rotating shaft, the transmission member connecting the electronic devices in the frame and the electronic devices in the legs needs to pass through the rotating shaft. After the legs are folded and unfolded for a long time, the transmission member passing through the rotating shaft will continuously slide and rub with the rotating shaft, which is easy to cause serious wear and even breakage of the transmission member, reducing the service life. CONTENT OF THE INVENTION

[0004] Therefore, the present application provides a rotating shaft assembly and smart glasses to solve the problem that the transmission line in the existing smart glasses is easy to wear and even break at the rotating shaft, and has a short service life.

[0005] In a first aspect, the present application provides a rotating shaft assembly applied to smart glasses, wherein the smart glasses include a frame, a leg, and a transmission member, the frame is provided with a first device, the leg is provided with a second device, and the transmission member connects the first device and the second device. The rotating shaft assembly includes a body and a rolling member, the frame and the leg are connected through the body; the rolling member is supported on the transmission member and is used to rotate when the transmission member is pulled.

[0006] In the present application, during the folding or opening of the leg relative to the frame, the transmission member is moved, and the transmission member can drive the rolling member to rotate through the friction between them, so that the transmission member and the rolling member do not produce relative sliding or basically do not produce relative sliding, and the rolling friction is formed between the transmission member and the rolling member, thereby reducing the wear of the transmission member and prolonging the service life.

[0007] In a possible implementation, the rolling member comprises a ball, and the ball is rolling connected with the body. The ball can roll in each direction relative to the body. When the transmission member moves, the transmission member can drive the ball to roll through friction between the ball and the transmission member, and rolling friction can be formed between the ball and the transmission member, which can ensure smooth movement of the transmission member and avoid relative sliding between the ball and the transmission member, thereby avoiding abrasion of the transmission member caused by sliding friction.

[0008] In a possible implementation, the body comprises a support body and a cover plate, and the cover plate is connected to the support body. The cover plate is provided with a first through hole, the ball is rolling arranged in the support body, and at least part of the ball protrudes from the first through hole. The ball can roll in each direction, so that rolling friction can be formed between the transmission member and the ball in each direction, which is beneficial to reduce abrasion of the transmission member.

[0009] In a possible implementation, the support body is provided with a recessed space, and the ball is rolling arranged in the recessed space. The recessed space can accommodate the ball and limit the ball, so that the ball can only roll in the recessed space and hardly displace, thereby ensuring that rolling friction is formed between the ball and the transmission member. The ball can be made of hard metal materials such as stainless steel or hard non-metal materials such as ceramics, which have a low friction coefficient and can reduce the friction between the ball and the transmission member.

[0010] In a possible implementation, the support body can be made of soft materials with a low elastic modulus, such as soft glue. The soft material has a certain elastic deformation capacity and can also ensure the support strength of the transmission member. When the transmission member such as a cable or a flexible circuit board moves, the force of the transmission member on the ball can be unloaded to a certain extent through elastic deformation of the support body made of soft material, thereby reducing the friction between the transmission member and the ball.

[0011] In a possible implementation, the rotating shaft assembly further comprises a support shaft connected to the body, and the rolling member comprises a first roller shaft which is rotatably sleeved on the support shaft. When the transmission member is pulled and moved, the transmission member can drive the first roller shaft to rotate relative to the support shaft, so that rolling friction is formed between the first roller shaft and the transmission member, thereby being beneficial to reduce abrasion of the transmission member. In addition, the first roller shaft has a large length, which can ensure consistency of support effect of the first roller shaft on the transmission member in each place, and ensure smooth movement of the transmission member.

[0012] In a possible implementation, the rotating shaft assembly further comprises an elastic member, the rolling member comprises a second rolling shaft, one end of the elastic member is rotationally connected with the second rolling shaft, and the other end of the elastic member is fixedly connected with the body. The elastic member can be elastically deformed, and during the movement of the transmission member, the elastic member can be elastically deformed to release the extrusion force on the second rolling shaft, so that the friction between the second rolling shaft and the transmission member can be reduced.

[0013] In a possible implementation, the body is provided with a channel, and the transmission member passes through the channel. The rolling member is arranged in the channel. The channel can constrain the transmission member, so that the transmission member can move stably in the direction in which the channel penetrates, and irregular movement of the transmission member in multiple directions can be avoided.

[0014] In a possible implementation, the body comprises a first end cover, a second end cover, a first support portion, and a second support portion. The two ends of the first support portion are respectively connected with the first end cover and the second end cover. The two ends of the second support portion are respectively connected with the first end cover and the second end cover. The first end cover, the second end cover, the first support portion, and the second support portion enclose the channel. In this embodiment, the body is assembled in a split connection manner, so that the rolling member can be conveniently assembled on the body, and the assembly operation is facilitated.

[0015] In a possible implementation, the body is an integrally formed structure, so that the structural strength and consistency of the body can be improved, and the manufacturing process is facilitated, the assembly operation is saved, and the cost is saved.

[0016] In a possible implementation, the surface of the rolling member is provided with a lubricating layer, for example, a Teflon coating. The Teflon coating has a small friction coefficient, and is beneficial to reducing the friction between the rolling member and the transmission member.

[0017] In a second aspect, the application further provides an intelligent glasses comprising the rotating shaft assembly provided in the first aspect of the application. The intelligent glasses comprising the rotating shaft assembly have similar technical effects to the rotating shaft assembly, and details are not repeated here.

[0018] It should be understood that the foregoing general description and the following detailed description are only exemplary and cannot limit the application. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0020] Figure 1 A structural schematic diagram of the intelligent glasses provided by the embodiments of the present application is shown in the figure.

[0021] Figure 2 A structural schematic diagram of the rotating shaft assembly provided by an embodiment of the present application is shown in the figure.

[0022] Figure 3 A structural schematic diagram of the rotating shaft assembly provided by an embodiment of the present application is shown in the figure.

[0023] Figure 4 A structural schematic diagram of the rotating shaft assembly provided by another embodiment of the present application is shown in the figure.

[0024] Figure 5 An exploded view of the first support part in the rotating shaft assembly provided by the embodiments of the present application is shown in the figure.

[0025] Figure 6 A structural schematic diagram of the rotating shaft assembly provided by another embodiment of the present application is shown in the figure.

[0026] Figure 7 A structural schematic diagram of the rotating shaft assembly provided by another embodiment of the present application is shown in the figure.

[0027] Reference signs:

[0028] 100-intelligent glasses; 110-frame; 111-first device; 120-glasses leg; 121-second device; 130-rotating shaft assembly; 140-transmission member;

[0029] 1-body; 11-first end cover; 12-second end cover; 13-first support part; 131-support body; 1311-recessed space; 132-cover plate; 1321-first through hole; 14-second support part; 15-channel;

[0030] 2-rolling member; 21-first rolling shaft; 211-second through hole; 23-second rolling shaft;

[0031] 3-support shaft;

[0032] 4-elastic member. DETAILED DESCRIPTION

[0033] In order to better understand the technical solutions of the present application, the embodiments of the present application will be described in detail below with reference to the drawings.

[0034] It should be understood that the described embodiments are merely some, not all, of the embodiments in this application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0035] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0036] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0037] In the description of this application, unless otherwise expressly specified and limited, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; unless otherwise specified or explained, the term "multiple" refers to two or more; the terms "connected," "fixed," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, an integral connection, or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0038] Figure 1 This is a schematic diagram of the structure of the smart glasses provided in the embodiments of this application, such as... Figure 1 As shown, the smart glasses 100 includes a frame 110, temples 120 and a hinge assembly 130. The temples 120 can be rotatably connected to the frame 110 through the hinge assembly 130, so that the temples 120 can be folded or opened relative to the frame 110 for easy storage or wearing of the smart glasses.

[0039] The smart glasses 100 can integrate numerous electronic components to achieve different functions. For example, the smart glasses 100 can integrate components such as a camera, optical engine, and motherboard. These components can be integrated into the frame 110 or the temples 120. For example, the frame 110 is provided with a first component 111, which can be disposed on the surface of the frame 110 or inside the frame 110. The first component 111 can include a circuit board or components capable of performing different functions, such as a camera, display module, and optical engine; this embodiment does not limit the type of the first component 111. The temples 120 are provided with a second component 121, which can be disposed on the surface of the frame 110 or on the inner wall of the frame 110. The second component 121 can also include a circuit board or components capable of performing different functions; this embodiment does not limit the type of the second component 121. The first component 111 and the second component 121 are electrically connected via a transmission component, which can include components with signal transmission functions such as cables and flexible circuit boards. For example, the second device 121 in the temple 120 may include a motherboard, and the first device 111 in the frame 110 may be electrically connected to the motherboard via a flexible circuit board.

[0040] The aforementioned transmission component needs to cross the hinge assembly 130. During the folding or opening of the temple 120, the distance between the components in the temple 120 and the components in the frame 110 changes. To prevent the transmission component from breaking due to tensile force, it has a certain redundancy and can move relative to the hinge assembly during the folding or opening of the temple 120. In related technologies, the transmission component bypasses the outer surface of the hinge assembly. During its movement, sliding friction occurs between the transmission component and the outer surface of the hinge assembly, which can easily cause severe wear or even breakage of the transmission component, reducing its service life.

[0041] The smart glasses provided in this application can solve the problem of wear caused by sliding friction at the pivot point of the transmission component in the aforementioned smart glasses.

[0042] Figure 2 This is a schematic diagram of a rotating shaft assembly provided in one embodiment of this application when it is used in conjunction with a transmission component. Figure 2 As shown, this application embodiment provides a pivot assembly applied to the smart glasses provided in this application embodiment. The pivot assembly includes a body 1 and a rolling element 2. The body 1 is disposed between the temple 120 and the frame 110 in the smart glasses, and both the temple 120 and the frame 110 are connected to the body 1, so that a rotational connection relationship is formed between the temple 120 and the frame 110.

[0043] The rolling element 2 is rotatably connected to the body 1. Specifically, the rolling element 2 can be disposed inside the body 1 to support the transmission element 140. That is, the transmission element 140 passes through the body 1 and is supported by the rolling element 2. As mentioned above, the transmission element 140 connects the first device 111 and the second device 121 for signal transmission. As the temple 120 folds or opens relative to the frame 110, the transmission element 140 is pulled, and friction is generated between the rolling element 2 and the transmission element 140. The rolling element 2 rotates under the action of friction, while there is almost no relative sliding between the transmission element 140 and the rolling element 2. Only rolling friction is formed between the transmission element 140 and the rolling element 2, thereby reducing the wear of the transmission element 140 and extending the service life of the smart glasses.

[0044] Figure 3 This is a schematic diagram of the structure of a rotating shaft assembly provided in one embodiment of this application, as shown below. Figure 3 As shown, a channel 15 can be provided on the main body 1, through which the transmission component can pass to connect the first device 111 in the frame 110 and the second device 121 in the temple 120 on both sides of the channel 15. The channel 15 can constrain the transmission component, ensuring stable movement of the transmission component in the direction through which the channel 15 passes, and preventing irregular movement of the transmission component in multiple directions.

[0045] The rolling element 2 is rotatably disposed in the channel 15 to facilitate contact with the transmission element. The rolling element 2 can be disposed on opposite sides within the channel 15, and the transmission element can pass between the rolling elements 2 on opposite sides. That is, the rolling elements 2 on both sides are located on opposite sides of the transmission element, thereby constraining the transmission element and preventing it from swaying during movement.

[0046] The rolling element 2 can be in the form of a ball, which is rolledly connected to the body 1 and can roll relative to the body 1 in all directions. When the transmission element moves, the transmission element can drive the ball to roll through the friction between the transmission element and the ball. Rolling friction can be formed between the ball and the transmission element, which can ensure the smooth movement of the transmission element and avoid relative sliding between the ball and the transmission element, thereby avoiding wear of the transmission element caused by sliding friction.

[0047] The body 1 can be a one-piece molded structure, with the channel 15 machined on the body 1, which can give the body 1 better structural strength, which is beneficial to improving structural consistency. It is also easy to process and manufacture, eliminating the need for assembly of multiple parts and saving costs.

[0048] Body 1 can also be a split structure. Figure 4 This is a schematic diagram of the structure of a rotating shaft assembly provided in another embodiment of this application, as shown below. Figure 4As shown, the main body 1 may include a first end cap 11, a second end cap 12, a first support portion 13, and a second support portion 14. The two ends of the first support portion 13 are connected to the first end cap 11 and the second end cap 12, respectively. The two ends of the second support portion 14 are also connected to the first end cap 11 and the second end cap 12, respectively. The first support portion 13 and the second support portion 14 are arranged opposite to each other, as are the first end cap 11 and the second end cap 12. The first end cap 11, the second end cap 12, the first support portion 13, and the second support portion 14 can be fixedly connected by welding, hot-melt connection, adhesive connection, or snap-fit. The first end cap 11, the second end cap 12, the first support portion 13, and the second support portion 14 enclose a channel 15. In this embodiment, the main body 1 is assembled using a split-connection method, which facilitates the assembly of the rolling element 2 on the main body 1 and simplifys the assembly operation.

[0049] The rolling element 2 is specifically a ball bearing, which can be disposed on the inner wall of the channel 15. For example, as shown... Figure 4 As shown, the ball bearings can be disposed on the first support portion 13 and the second support portion 14, and multiple ball bearings can be disposed on both the first support portion 13 and the second support portion 14 to ensure reliable support force for the transmission component and ensure stable movement of the transmission component.

[0050] The first support part 13 and the second support part 14 can be symmetrical structures. Figure 5 Taking the structure of the first support part 13 as an example, the structure of the second support part 14 can be the same.

[0051] Figure 5 An exploded view of the first support portion 13 in the pivot assembly provided in this application embodiment, as shown below. Figure 5 As shown, the first support portion 13 may include a support body 131 and a cover plate 132. The cover plate 132 can be fixedly connected to the support body 131 by means of adhesive bonding, welding, or other methods. A recessed space 1311 may be provided on the support body 131, and a first through hole 1321 may be provided on the cover plate 132. When the cover plate 132 is connected to the support body 131, the first through hole 1321 can be aligned with the recessed space 1311. A portion of the ball can be accommodated in the recessed space 1311 and can roll within it. Another portion of the ball can protrude from the first through hole 1321 to contact the transmission component. The ball can be spherical, and the first through hole 1321 can be circular. The inner diameter of the first through hole 1321 is smaller than the diameter of the ball, thereby confining the ball within the recessed structure and preventing it from falling out of the first through hole 1321.

[0052] The ball bearings can be made of hard metals such as stainless steel or hard non-metals such as ceramics. These materials have a low coefficient of friction, which can reduce the friction between the ball bearings and the transmission components.

[0053] The support body 131 can be made of a soft material with a low elastic modulus, such as soft rubber. This soft material has a certain elastic deformation capacity while ensuring the support strength for the transmission component. When the transmission component, such as the cable or flexible circuit board, moves, the force exerted by the transmission component on the ball bearings can be partially relieved by the elastic deformation of the support body made of soft material, thereby reducing the friction between the transmission component and the ball bearings.

[0054] Figure 6 This is a schematic diagram of the structure of a rotating shaft assembly provided in another embodiment of this application, as shown below. Figure 6 As shown, the rotating shaft assembly also includes a support shaft 3. Both ends of the support shaft 3 can be fixedly connected to the first end cap 11 and the second end cap 12 of the main body 1, respectively. For example, the support shaft 3 can be fixed to the first end cap 11 and the second end cap 12 by screws or adhesive bonding, thereby ensuring structural reliability and facilitating assembly. The rolling element 2 includes a first roller 21, which may have a second through hole 211. The first roller 21 is rotatably fitted onto the support shaft 3 through the second through hole 211.

[0055] The diameter of the second through hole 211 can be larger than the outer diameter of the support shaft 3, thereby ensuring that the first roller 21 can rotate smoothly relative to the support shaft 3. In other embodiments, the two ends of the support shaft 3 can also be connected to other positions on the body 1, which can be adjusted according to the extension direction of the transmission component.

[0056] The first roller 21 can be connected to the support shaft 3 by a bearing. The bearing can ensure the stability of the position of the first roller 21 relative to the support shaft 3, prevent the first roller 21 from moving axially on the support shaft 3, and at the same time ensure that the first roller 21 can rotate smoothly by the friction of the transmission component.

[0057] In some other embodiments, a limiting structure may be provided on the first roller 21 or the support shaft 3. The limiting structure can restrict the first roller 21 from moving axially on the support shaft 3, ensuring that the first roller 21 can only rotate relative to the support shaft 3.

[0058] For example, the limiting structure may be a protrusion protruding from the surface of the support shaft 3, which can block the end of the first roller 21. For example, the limiting structure may also be a pin or other part, which can be inserted into the support shaft 3 and can block the end of the first roller 21.

[0059] There can be multiple first rollers 21, which are arranged in parallel or roughly parallel. This facilitates a large contact area with the transmission component and ensures the stability of the transmission component's movement.

[0060] In this design, first rollers 21 can be installed on both opposite sides of the channel 15 of the main body 1. The transmission component can pass between the first rollers 21 on both sides of the channel 15, and the stability of the transmission component's movement can be ensured by the first rollers 21 on both sides of the channel 15. In addition, by adjusting the distance between the first rollers 21 on both sides of the channel, the constraint effect of the first rollers 21 on the transmission component can be adjusted to ensure the stable movement of the transmission component.

[0061] In addition, multiple first rollers 21 can be set on both sides of the channel 15. The first rollers 21 on both sides of the channel 15 can be set one to one opposite each other. The distance between two opposite first rollers 21 can be the same or different. The distance between two opposite first rollers 21 affects the constraint effect on the transmission component. By adjusting the distance between any two opposite first rollers 21, the movement trajectory of the transmission component can be adjusted.

[0062] Figure 7 This is a schematic diagram of the structure of a rotating shaft assembly provided in another embodiment of this application, as shown below. Figure 7 As shown, the rotating shaft assembly also includes an elastic element 4, and the rolling element 2 includes a second roller 23. One end of the elastic element 4 can be rotatably connected to the second roller 23, and the other end of the elastic element 4 can be fixedly connected to the first end cap 11 or the second end cap 12, respectively. In one embodiment, an elastic element 4 is provided at each end of the second roller 23. The elastic element 4 located at one end of the second roller 23 can be connected to the first end cap, and the elastic element 4 located at the other end of the second roller 23 can be connected to the second end cap. Exemplarily, the elastic element 4 can be a spring or a soft material with elastic deformation capability, such as soft rubber. Wherein, the elastic element 4 can undergo elastic deformation. During the movement of the transmission component, it may exert a compressive force on the second roller 23. At this time, the elastic element 4 can undergo elastic deformation to relieve the compressive force on the second roller 23, thereby reducing the friction between the second roller 23 and the transmission component.

[0063] In some other embodiments, one end of the elastic element 4 can be rotatably connected to the body 1, and the other end can be fixedly connected to the second roller 23, thereby enabling the second roller 23 to rotate relative to the body 1.

[0064] In one embodiment, the surface of the rolling element 2 may be provided with a lubricating layer. This lubricating layer may be a coating applied to the surface of the rolling element 2, such as a Teflon coating. The Teflon coating has a low coefficient of friction, which helps to reduce the friction between the rolling element 2 and the transmission element. In other embodiments, the coating may also be made of other materials with low coefficients of friction, which will not be described in detail in this embodiment.

[0065] In one embodiment, the rolling element 2 can also reduce the surface friction coefficient through surface treatment processes such as polishing, so as to reduce the friction between the rolling element 2 and the transmission element.

[0066] There can be multiple second rollers 23, which are arranged in parallel or roughly parallel. This facilitates a large contact area with the transmission component and ensures the stability of the transmission component's movement.

[0067] In this design, second rollers 23 can be installed on both opposite sides of the channel 15 of the main body 1. The transmission component can pass between the second rollers 23 on both sides of the channel 15, and the stability of the transmission component's movement can be ensured by the second rollers 23 on both sides of the channel 15. In addition, by adjusting the distance between the second rollers 23 on both sides of the channel, the constraint effect of the second rollers 23 on the transmission component can be adjusted to ensure stable movement of the transmission component.

[0068] In addition, multiple second rollers 23 can be set on both sides of the channel 15. The second rollers 23 on both sides of the channel 15 can be set one to one opposite each other. The distance between two opposite second rollers 23 can be the same or different. The distance between two opposite second rollers 23 affects the constraint effect on the transmission component. By adjusting the distance between any two opposite second rollers 23, the movement trajectory of the transmission component can be adjusted.

[0069] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A hinge assembly for use in smart glasses, characterized in that, The smart glasses include a frame (110), temples (120), and a transmission device (140). The frame (110) is provided with a first device (111); the temples (120) are provided with a second device (121); and the transmission device (140) connects the first device (111) and the second device (121). The rotating shaft assembly (130) includes a body (1) and a rolling element (2), and the frame (110) and the temple (120) are rotatably connected through the body; the rolling element (2) is supported on the transmission element (140) and is used to rotate when the transmission element (140) is pulled.

2. The rotating shaft assembly according to claim 1, characterized in that, The rolling element (2) includes balls that are tactilely connected to the body (1).

3. The rotating shaft assembly according to claim 2, characterized in that, The main body (1) includes a support (131) and a cover plate (132), the cover plate (132) being connected to the support (131). The cover plate (132) is provided with a first through hole (1321), the ball is rotatably disposed on the support (131), and at least a portion of the ball protrudes from the first through hole (1321).

4. The rotating shaft assembly according to claim 3, characterized in that, The support body is provided with a recessed space (1311), and the ball is rotatably disposed in the recessed space (1311).

5. The rotating shaft assembly according to claim 1, characterized in that, It also includes a support shaft (3), which is connected to the body (1); The rolling element (2) includes a first roller (21), which is rotatably sleeved on the support shaft (3).

6. The rotating shaft assembly according to claim 1, characterized in that, It also includes an elastic element (4), the rolling element (2) includes a second roller (23), one end of the elastic element (4) is rotatably connected to the second roller (23), and the other end of the elastic element (4) is fixedly connected to the body (1).

7. The rotating shaft assembly according to claim 1, characterized in that, The main body (1) is provided with a channel (15), and the transmission component (140) passes through the channel (15). The rolling element (2) is disposed in the channel (15).

8. The rotating shaft assembly according to claim 7, characterized in that, The body (1) includes a first end cap (11), a second end cap (12), a first support part (13), and a second support part (14). The two ends of the first support (13) are respectively connected to the first end cap (11) and the second end cap (12); The two ends of the second support (14) are respectively connected to the first end cap (11) and the second end cap (12); The channel (15) is formed by the first end cap (11), the second end cap (12), the first support (13), and the second support (14).

9. The rotating shaft assembly according to claim 1, characterized in that, The main body (1) is a one-piece molded structure.

10. The rotating shaft assembly according to claim 1, characterized in that, The surface of the rolling element (2) is provided with a lubricating layer.

11. A type of smart glasses, characterized in that, Includes the shaft assembly as described in any one of claims 1-10.

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