Patent Description:
Virtual reality (VR) and Augmented reality (AR) technologies can bring users a visual experience that is almost the same as the real scene and are currently popular research fields. To enable users to better experience the VR and AR technologies, head-mounted devices are usually adopted for displaying.

A head-mounted device is a wearable device that is worn on a user's head. After being worn, a display screen used for VR or AR display is disposed in front of the user's eyes. By displaying the corresponding content in the area corresponding to the left and right eyes of the user in the display screen in the head-mounted device, the user may experience the VR or AR display effect.

When the head-mounted device is worn with a strap, and during a tightness adjustment of the strap, it is necessary to adopt a special device. However, this device may cause the user to wear uncomfortable and unattractive appearance.

The present disclosure provides a head-mounted device, as set out in the appended set of claims.

When a user wears the head-mounted device, the strap assembly connects the host housing and the second housing together to form a wearable ring frame, the force receiving member is arranged obliquely on the forehead toward the second housing, and is in contact with the portion above the user's forehead, thus the force receiving member can stably support the head-mounted device, thus allowing the user to wear more comfortably.

To illustrate the technical solutions more clearly in the embodiments of the present disclosure, the following will be briefly described in the description of the embodiments required to use the attached drawings. It is obvious that the following description of the attached drawings are only some of the embodiments of the present disclosure, and those skilled in the art, without creative work, can also obtain other attached drawings based on these drawings.

The technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, and not all of them. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without making creative labor fall within the scope of the present disclosure.

Mentioning "embodiments" herein means that a specific feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present disclosure. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art clearly and implicitly understand that the embodiments described herein can be combined with other embodiments.

It is to be noted that the terms "first", "second", etc. in this article are only intended for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first" and "second" may explicitly or implicitly include one or more of the features.

Referring to <FIG>, the head-mounted device <NUM> of the embodiment of the present disclosure may include a first housing assembly <NUM>, a strap assembly <NUM> connected to both ends of the first housing assembly <NUM>, a tightness adjustment mechanism <NUM> connected to the strap assembly <NUM>, a second housing assembly <NUM> arranged on the strap assembly <NUM> and opposite to the first housing assembly <NUM>, and a force receiving assembly <NUM> arranged on the first housing assembly <NUM> and the second housing assembly <NUM>. The first housing assembly <NUM>, the strap assembly <NUM>, and the second housing assembly <NUM> may form a frame with adjustable tightness, such that the head-mounted device <NUM> may be worn on a user's head. The force receiving assembly <NUM> is arranged on upper and lower sides of the frame to share the weight of the head-mounted device <NUM> borne by the user's head.

Further referring to <FIG> and <FIG>, the head-mounted device <NUM> may further include a host received in the first housing assembly <NUM>. The host may include an opto-mechanical assembly <NUM>, a camera assembly <NUM>, a main board <NUM>, and a speaker assembly <NUM>, a microphone assembly <NUM>, etc. Since the first housing assembly <NUM> is configured to receive and protect the host, the first housing assembly <NUM> may also be referred to as a host housing or a protective housing. The first housing assembly <NUM> and the host contained therein may constitute a host assembly. The head-mounted device <NUM> may be VR glasses, AR glasses, or the like. In the embodiments of the present disclosure, AR glasses are taken as an example for description.

In the example of AR glasses, the head-mounted device <NUM> may be configured to transmit data to and receive data from an external processing device through a signal connection, and the signal connection may be a wired connection, a wireless connection, or a combination thereof. However, in other situations, the head-mounted device <NUM> may be configured as a stand-alone device, that is, data processing is performed on the head-mounted device <NUM> itself. The signal connection may be configured to carry any kind of data, such as image data (e.g., still images and/or full motion video, including 2D and 3D images), audio, multimedia, voice, and/or any other type of data. The external processing device may be, for example, a game console, a personal computer, a tablet computer, a smart phone, or other types of processing devices. The signal connection may be, for example, a universal serial bus (USB) connection, Wi-Fi connection, Bluetooth, or Bluetooth low energy (BLE) connection, Ethernet connection, cable connection, DSL connection, cellular connection (e.g., <NUM>, LTE/<NUM> or <NUM>) etc., or a combination thereof. Additionally, the external processing device may communicate with one or more other external processing devices via a network. The network may be or include, for example, a local area network (LAN), a wide area network (WAN), an intranet, a metropolitan area network (MAN), the global Internet, or a combination thereof.

The first housing assembly <NUM> of the head-mounted device <NUM> may be arranged with a display assembly, an optical device, a sensor, a processor, etc. In the example of AR glasses, the display assembly is designed to, for example, overlay an image on the user's view of a real-world environment by projecting light into the user's eyes. The head-mounted device <NUM> may further include an environmental light sensor and an electronic circuit system to control at least some of the aforementioned components and perform associated data processing functions. The electronic circuit system may include, for example, one or more processors and one or more memories.

Referring to <FIG>, which is a perspective assembly view of the strap assembly <NUM> and the second housing assembly <NUM> according to an embodiment of the present disclosure. The strap assembly <NUM> may include two headbands, that is, a first headband <NUM> and a second headband <NUM>.

Referring to <FIG> and <FIG>, an end of the first headband <NUM> is connected to a corresponding end of the first housing assembly <NUM>, and the other end of the first headband <NUM> extends from a corresponding end of the second housing assembly <NUM> and is connected to tightness adjustment mechanism <NUM>. The second headband <NUM> may be arranged in a similar manner as the first headband <NUM>.

Referring to <FIG>, which are a perspective assembly view and an exploded view of the first headband <NUM> according to an embodiment of the present disclosure. The first headband <NUM> may include a first headband body <NUM>, a first headband cover <NUM> buckled together with the first headband body <NUM>; and a first flexible strip <NUM>, a power source FPC <NUM>, a protective sheet <NUM>, and a first heat sink <NUM> that are pressed between the first headband body <NUM> and the first headband cover <NUM>.

The first headband body <NUM> may be made of a flexible material and be bent arbitrarily, substantially in the shape of an elongated strip. The first headband body <NUM> may include a first body portion <NUM> and a first mounting portion <NUM> extending from an end of the first body portion <NUM>.

The first body portion <NUM> has a uniform width and defines a length adjustment hole <NUM> at an end away from the first mounting portion <NUM>. The length adjustment hole <NUM> is a strip-shaped through hole. The first body portion <NUM> is arranged with first serrations <NUM> extending along a length direction of the length adjustment hole <NUM> to cooperate with the tightness adjustment mechanism <NUM>.

Referring to <FIG>, which is a perspective exploded view of the first headband <NUM> of the embodiment of the present disclosure from another perspective. The first body portion <NUM> may define a groove in the shape of an elongated strip, which has the same shape as the first headband <NUM>, on a side pressed against the first headband cover <NUM>. The groove may be divided into two, namely, a first groove <NUM> and a second groove <NUM> connected to the first groove <NUM>. The depth of the first groove <NUM> is the same as the depth of the second groove <NUM>, while the width of the first groove <NUM> is greater than the width of the second groove <NUM>. The groove extends from a position adjacent to the length adjustment hole <NUM> to a position adjacent to the first mounting portion <NUM>. The second groove <NUM> is a stepped groove, and an outermost stepped groove thereof may be configured to receive the first flexible strip <NUM>. The first body portion <NUM> is arranged with a first connecting member <NUM> on two side edges of the first groove <NUM>. In some embodiments, the first connecting member <NUM> is a plurality of evenly arranged hooks. The first body portion <NUM> is arranged with a first fixing portion <NUM> in the first groove <NUM>. The first fixing portion <NUM> may be a plurality of convex ribs with gradually changing thickness, and a top surface of each convex rib is inclined. An end of the convex ribs abuts against the first mounting portion <NUM>.

A plurality of first limiting posts <NUM> are arranged in the groove of the first body portion <NUM> to fix the power source FPC <NUM>, the protective sheet <NUM>, and the first heat sink <NUM>.

The first mounting portion <NUM> defines two first connecting holes <NUM>. A recess 2102a is defined between the two first connecting holes <NUM>.

Referring to <FIG>, the first headband cover <NUM> may be made of a hard material, configured to buckle with the first headband body <NUM> on a side of the first headband body <NUM> close to the first mounting portion <NUM> and compress an end of the first flexible strip <NUM> near the first mounting portion <NUM>.

The first headband cover <NUM> may include a first body <NUM> and a first assembly portion <NUM> extending from an end of the first body <NUM> away from the first flexible strip <NUM>.

The first body <NUM> has a uniform width and a shape corresponding to the first body portion <NUM>, except that the length is shorter than that of the first body portion <NUM>. Two side edges of the first body <NUM> in a width direction respectively extend toward the first body portion <NUM> to form first side walls <NUM>. The two first side walls <NUM> are arranged with second connecting members <NUM> on the opposite inner surfaces of the two first side walls <NUM>. The second connecting members <NUM> cooperate with the first connecting members <NUM> to fix the first headband cover <NUM> and the first headband body <NUM>. The first body <NUM> may be arranged with a second fixing portion <NUM> at an end connected to the first assembly portion <NUM>. When the first headband cover <NUM> is buckled with the first headband body <NUM>, the first fixing portion <NUM> of the first headband body <NUM> cooperates with the second fixing portion <NUM> of the first headband cover <NUM> to compress and fix the power source FPC <NUM> and the first heat sink <NUM> between the first headband body <NUM> and the first headband cover <NUM>. The second fixing portion <NUM> may be similar in structure to the first fixing portion <NUM>, and it may also be a plurality of convex ribs with gradually changing thickness. A top surface of each convex rib is inclined, and an end of the convex ribs abuts the first assembly portion <NUM>.

The first assembly portion <NUM> has the same shape as the first mounting portion <NUM> and defines a second connecting hole <NUM>. When the first assembly portion <NUM> is attached to the first mounting portion <NUM>, the first connecting hole <NUM> is aligned and communicated with the second connecting hole <NUM>, forming a through hole at the recess 2102a.

The first flexible strip <NUM> is made of a flexible material and can be bent arbitrarily, substantially in the shape of an elongated strip. The material of the first flexible strip <NUM> may be the same as that of the first headband body <NUM>. The first flexible strip <NUM> may be adhered to the second groove <NUM> on the first headband body <NUM> by means of gluing or the like, making an outer surface of the first flexible strip <NUM> flush with an outer surface of the first headband body <NUM>, that is, a surface close to the user's head. A gap <NUM> is defined at an end of the first flexible strip <NUM>. When the first flexible strip <NUM> is adhered to the second groove <NUM>, the first flexible strip <NUM> and the first headband body <NUM> jointly define a first through hole at the gap <NUM> to communicate with the second groove <NUM> for the power source FPC <NUM> to pass through.

Referring to <FIG> and <FIG>, the shape of the power source FPC <NUM> is adapted to the first headband body <NUM>, but the length thereof is greater than that of the first headband body <NUM> with both ends of the power source FPC <NUM> extending beyond both ends of the first headband body <NUM>. The power source FPC <NUM> may include a first electrical connection portion <NUM> extending into the first housing assembly <NUM> and connected to the main board <NUM> and/or the microphone assembly <NUM>, a power source FPC neck <NUM> stuck in the through hole and connected to the first electrical connection portion <NUM>, a power source FPC body <NUM> fixed in the first and second grooves <NUM>, <NUM>, a movable portion <NUM> arranged outside the second groove <NUM> and penetrating the first through hole, and a second electrical connection portion <NUM> arranged at an end of the movable portion <NUM> and connected to a battery <NUM>.

Referring to <FIG>, which is a partial enlarged view of the area A in <FIG>, showing a schematic view of a connection between the first electrical connection portion <NUM> and circuit components when the strap assembly <NUM> extends into the first housing assembly <NUM>. Among them, the first electrical connection portion <NUM> includes a wiring portion 2132a connected to the main board <NUM> and a wiring portion 2132b connected to the microphone assembly <NUM>. The wiring portion 2132a and the second electrical connection portion <NUM> are both plug-in ports and are connected by plug-in connections. For example, as shown in <FIG>, the main board <NUM> is plug-in-connected to the wiring portion 2132a. For example, as shown in <FIG>, the second electrical connection portion <NUM> is plug-in-connected to the battery <NUM>.

Referring again to <FIG> and <FIG>, the width of the power source FPC neck <NUM> is less than power source FPC parts on its adjacent sides, such as the power source FPC body <NUM>. Referring to <FIG>, it can be seen that the power source FPC neck <NUM> is stuck right in the first through hole, preventing the power source FPC <NUM> from loosening.

Referring to <FIG> and <FIG>, the power source FPC body <NUM> defines a first jack <NUM>. When the power source FPC body <NUM> is placed in the first and second grooves <NUM>, <NUM>, a first limiting post <NUM> is arranged in the first jack <NUM> to fix the power source FPC body <NUM>.

The shape of the protective sheet <NUM> is adapted to the first and second grooves <NUM>, <NUM> to be received in the two grooves, for example, in an innermost stepped groove of the second groove <NUM> and the first groove <NUM>. The protective sheet <NUM> defines a plurality of second jacks <NUM>, and the protective sheet <NUM> is fixed by placing the first limiting post <NUM> in the second jack <NUM>. The protective sheet <NUM> is received in the first and second grooves <NUM> and <NUM> to directly contact the first body portion <NUM>, preventing the power source FPC body <NUM> from directly contacting the first body portion <NUM>.

The shape of the first heat sink <NUM> is similar to that of the power source FPC <NUM>. The first heat sink <NUM> is arranged between the first headband cover <NUM> and the power source FPC <NUM> and may include a first attachment portion <NUM> extending into the first housing assembly <NUM>, a first heat sink neck <NUM> stuck in the through hole and connected to the first attachment portion <NUM>, and a first heat sink body <NUM> fixed in the first groove <NUM> and the second groove <NUM>. For example, as shown in <FIG>, the first attachment portion <NUM> is attached to a side wall of a speaker body <NUM> in the speaker assembly <NUM>.

The width of the first heat sink neck <NUM> is less than that of heat sink parts on both sides, such as the first heat sink body <NUM>. Referring to <FIG>, it can be seen that the first heat sink neck <NUM> is stuck right in the through hole to prevent the first heat sink <NUM> from loosening. The first heat sink body <NUM> defines a third jack <NUM>. When the first heat sink body <NUM> is placed in the first and second grooves <NUM>, <NUM>, the first limiting post <NUM> is arranged in the third jack <NUM> for fixing the first heat sink body <NUM>. The first fixing portion <NUM> cooperates with the second fixing portion <NUM> to press on the first heat sink body <NUM> between the first headband body <NUM> and the first headband cover <NUM> to compress and fix the first heat sink body <NUM>.

A filler <NUM> may be arranged between the first heat sink <NUM> and the first headband cover <NUM>. The filler <NUM> may be foam to fill a space between the first headband cover <NUM> and the first headband body <NUM>; or may be a thermally conductive material to improve the heat conduction effect of the first heat sink <NUM>.

During the assembling process of the first headband <NUM>, referring to <FIG> and <FIG>, the protective sheet <NUM>, the power source FPC <NUM>, and the first heat sink <NUM> are stacked in sequence to make the second jack <NUM>, the first jack <NUM>, and the third jack <NUM> aligned in sequence, and are placed in the first and second grooves <NUM>, <NUM> of the first headband body <NUM>, such that the first limiting post <NUM> passes through the second jack <NUM>, the first jack <NUM>, and the third jack <NUM>; the first flexible strip <NUM> is embedded and covered on the outermost stepped groove of the second groove <NUM>, which may be bonded by glue, such that the first flexible strip <NUM> and the first body portion <NUM> of the first headband body <NUM> define the first through hole at the gap <NUM>, and the movable portion <NUM> of the power source FPC <NUM> passes through the first through hole; the power source FPC neck <NUM> and the first heat sink neck <NUM> of the power source FPC <NUM> are placed in the recess 2102a; the filler <NUM> is placed on the first body <NUM> of the first headband cover <NUM>, and the first headband cover <NUM> is buckled on the first headband body <NUM>, such that the first connecting member <NUM> and the second connecting member <NUM> are connected, and the first mounting portion <NUM> is buckled with the first assembly portion <NUM> to form a connecting portion to be connected with the corresponding end of the first housing assembly <NUM>; the assembly of the first headband <NUM> is completed.

It can be understood that the first headband cover <NUM> is buckled on the first headband body <NUM>, cooperating with a corresponding portion of the first headband body <NUM> to define an accommodating cavity. Specifically, the first body portion <NUM> is buckled with the first headband cover <NUM> at the first groove <NUM> to form the accommodating cavity. The accommodating cavity may receive the protective sheet <NUM>, the power source FPC <NUM>, the first heat sink <NUM>, and the filler <NUM>. The second groove <NUM> communicates with the accommodating cavity.

Referring to <FIG> and <FIG>, which are a perspective assembly view and an exploded view of the second headband <NUM> according to the embodiment of the present disclosure. The second headband <NUM> is similar to the first headband <NUM>, and the difference between the two is that the second headband <NUM> is not arranged with a power source FPC and a protective sheet therefor. The second headband <NUM> may include a second headband body <NUM>, a second headband cover <NUM>, a second flexible strip <NUM> pressed between the second headband body <NUM> and the second headband cover <NUM>, and a second heat sink <NUM>. The structure of the second headband body <NUM> is substantially the same as that of the first headband body <NUM>. Reference may be made to <FIG> for details, where only the main components are listed, and the specific cooperation relationship and functions are referred to the introduction of the first headband body <NUM>. The second headband body <NUM> may include a second body portion <NUM> and a second mounting portion <NUM>. The second body portion <NUM> has a length adjustment hole <NUM>, second serrations <NUM>, a first groove <NUM>, and a second groove <NUM>. A first connecting member <NUM> is arranged on both sides of the first groove <NUM>, and a first fixing portion <NUM> is arranged at a position of the first groove <NUM> adjacent to the second mounting portion <NUM>. Two first connecting holes <NUM> are defined on the second mounting portion <NUM>, and a recess 2202a is defined between the two first connecting holes <NUM>.

Referring to <FIG> is a perspective exploded view of the second headband <NUM> of the embodiment of the present disclosure from another perspective. The second headband cover <NUM> and the first headband cover <NUM> are substantially the same in structure, will not be detailed here, and only the main components are listed. For the specific cooperation relationship and function thereof, reference may be made to the introduction of the first headband cover <NUM>. The second headband cover <NUM> may include a second body <NUM> and a second assembly portion <NUM>. The second body <NUM> has a second fixing portion <NUM>, a second side wall <NUM> and a second connecting member <NUM>. The second assembly portion <NUM> defines two second connecting holes <NUM>.

The second flexible strip <NUM> is made of a flexible material and can be bent arbitrarily, substantially in the shape of an elongated strip. The material of the second flexible strip <NUM> may be the same as that of the second headband body <NUM>. The material of the second flexible strip <NUM> may be adhered to the second headband body <NUM> by means of gluing or the like, making an outer surface of the second flexible strip <NUM> flush with an outer surface of the second headband body <NUM>, that is, a surface close to the user's head.

The second heat sink <NUM> has substantially the same structure as the first heat sink <NUM> and may include a second attachment portion <NUM> extending into the first housing assembly <NUM>, a second heat sink neck <NUM> stuck in the through hole and connected to the second attachment portion <NUM>, and a second heat sink body <NUM> fixed in the first groove <NUM> and the second groove <NUM>. As shown in <FIG>, the second attachment portion <NUM> is attached to a side wall of the speaker body <NUM> in the speaker assembly <NUM>.

The width of the second heat sink neck <NUM> is less than that of heat sink parts on both sides, such as the second heat sink body <NUM>. Referring to <FIG>, it can be seen that the second heat sink neck <NUM> is stuck right in the through hole to prevent the second heat sink <NUM> from loosening.

When the second heat sink body <NUM> is placed in the first and second grooves <NUM> and <NUM>, the first fixing portion <NUM> cooperates with the second fixing portion <NUM> to fix the second heat sink body <NUM> arranged between the second headband body <NUM> and the second headband cover <NUM>.

The second headband cover <NUM> is arranged with a filler <NUM> in an area where the second connecting member <NUM> is disposed, and the filler <NUM> is placed between the second heat sink <NUM> and the second headband cover <NUM>. The filler <NUM> may be foam to fill a space between the second headband cover <NUM> and the second headband body <NUM>; or may be a thermally conductive material to improve the heat conduction effect of the second heat sink <NUM>.

During the assembling process of the second headband <NUM>, referring to <FIG>, the second heat sink <NUM> is placed in the first groove <NUM> and the second groove <NUM> within the second headband body <NUM>, and the second flexible strip <NUM> is embedded and covered on an outermost stepped groove of the second groove <NUM>, which may be bonded by glue; the second heat sink neck <NUM> is placed in the recess 2202a; the second filler <NUM> is placed on the second headband cover <NUM>, and the second headband cover <NUM> is buckled on the second headband body <NUM>, such that the first connecting member <NUM> and the second connecting member <NUM> are connected, and the second mounting portion <NUM> is buckled with the second assembly portion <NUM> to form a connecting portion to be connected with the corresponding end of the first housing assembly <NUM>; the assembly of the second headband <NUM> is completed.

It can be understood that the second headband cover <NUM> is buckled on the second headband body <NUM>, cooperating with a corresponding portion of the second headband body <NUM> to define an accommodating cavity. The second heat sink <NUM> and the filler <NUM> may be accommodated in the accommodating cavity; the second groove <NUM> communicates with the accommodating cavity.

The assembling relationship between the strap assembly <NUM> and the first housing assembly <NUM> is specifically introduced as follows:.

Referring to <FIG> and <FIG>, during the assembling process of the first headband <NUM> to the first housing assembly <NUM>, the first housing assembly <NUM> is connected to a connecting portion on the first headband <NUM>, such as through the first and second connecting holes <NUM>, <NUM>.

For the positional relationship and connection relationship of the first heat sink <NUM>, the second heat sink <NUM>, and the power source FPC <NUM> inside the first housing assembly <NUM>, reference may be made to <FIG>, <FIG>, <FIG>, and <FIG>; the wiring portion 2132a of the power source FPC <NUM> is connected to the PCB on the main board <NUM>, such as by means of welding; the wiring portion 2132b of the power source FPC <NUM> is connected to a first microphone in the microphone assembly <NUM>, such as by means of welding; the first heat sink <NUM> extends into the first housing assembly <NUM>, and the first attachment portion <NUM> is attached to the outer side wall of the speaker body <NUM> of the speaker assembly <NUM>. The second heat sink <NUM> extends into the first housing assembly <NUM>, and the second attachment portion <NUM> thereof is attached to the outer side wall of the speaker body <NUM> of the speaker assembly <NUM>.

It should be noted that the connection of the first headband <NUM>, the second headband <NUM>, and the first housing assembly <NUM> is not limited to the above-mentioned connection method. Any form of connecting member is sufficient as long as it can connect the strap assembly <NUM> to the first housing assembly <NUM>.

The number, structure, and position of the heat sink, power supply FPC <NUM>, protective sheet <NUM>, and filler filled in the first headband <NUM> and the second headband <NUM> may be adjusted according to the actual situation. For example, the first headband <NUM> and the second headband <NUM> may be adjusted to be filled with the heat sink, power supply FPC <NUM>, protection sheet <NUM> and filler; of course, other structures may be further filled or some existing structures may be deleted according to the actual situation. For example, the heat sink and power supply FPC may be filled with an isolation sheet; both the first headband <NUM> and the second headband <NUM> may be adjusted to be filled with only the heat sinks; one of the first headband <NUM> and the second headband <NUM> may be an ordinary headband with a length adjustment hole; and the structure of the first headband <NUM> and the second headband <NUM> may also be adaptively adjusted according to the difference in internal filling.

Understandably, the first headband <NUM> and the second headband <NUM> may also be integrated, that is, configured as one headband; for example, one end of the headband is overlapped with the other end, and the middle portion may be connected to the body housing; loosening and tightening of the strap assembly <NUM> may be accomplished by adjusting the length of the overlapping connection section; in a case that the first headband <NUM> and the second headband <NUM> are configured as one headband, other connection methods may also be used, which are not limited herein.

Referring to <FIG>, which are a perspective exploded view and a combined view of the second housing assembly <NUM>, not according to the claimed invention. The second housing assembly <NUM> may include a bottom front housing <NUM>, a bottom rear housing <NUM>, and a connecting member <NUM> connected to the front housing <NUM> and the bottom rear housing <NUM>. The second housing assembly <NUM> may accommodate the strap assembly <NUM> and the tightness adjustment mechanism <NUM>.

Referring to <FIG>, the bottom front housing <NUM> may be made of a hard material and includes a first channel housing <NUM> and a first power supply housing <NUM> extending downwardly from the first channel housing <NUM>.

The first channel housing <NUM> is strip-shaped and bent as a whole, to match the user's head shape, which is convenient for the user to wear. Inner and outer surfaces of the first channel housing <NUM> are smooth curved surfaces. The first channel housing <NUM> includes a body <NUM> bent in a strip shape, and a first convex edge <NUM> and a second convex edge <NUM> that are bent from two long side edges of the body <NUM> toward the bottom rear housing <NUM>. The first convex edge <NUM> is disposed above the body <NUM>, and the second convex edge <NUM> is disposed below the body <NUM>.

Opposite ends of the body <NUM> are respectively arranged with third fasteners <NUM>. Each third fasteners <NUM> may include a plurality of protrusions <NUM> extending outward from an end edge of the body <NUM> and a plurality of protruding blocks <NUM> adjacent to the end edge. The protruding blocks <NUM> may be arranged on a surface facing the bottom rear housing <NUM>; or may be arranged on a surface far away from the bottom rear housing <NUM>.

The first and second convex edges <NUM> and <NUM> are arranged with first fasteners <NUM> on opposite inner sides, and the first fasteners <NUM> may be a plurality of evenly arranged protrusions.

An edge of the body <NUM> connected with the first convex edge <NUM> is defines a plurality of grooves <NUM>. The grooves <NUM> are disposed at the center of a longer edge of the body <NUM> and face the first power supply housing <NUM>. The grooves <NUM> are configured to avoid corresponding components on the bottom rear housing <NUM>.

The first power supply housing <NUM> includes a first power supply housing body <NUM> extending downward from a middle portion of a long side of the body <NUM> where the second convex edge <NUM> is located, and a convex edge <NUM> bent from an outer edge of the first power supply housing body <NUM> to the bottom rear housing <NUM>. That is, there is no second convex edge <NUM> arranged at the connection between the first power supply housing body <NUM> and the body <NUM> of the first channel housing <NUM>, and the second convex edge <NUM> is disconnected at the middle position of the long side of the body <NUM>. Two ends formed by the second convex edge <NUM> being disconnected are respectively connected to the convex edge <NUM> of the first power supply housing <NUM>.

The first power supply housing body <NUM> has a rectangular shape, and the first power supply housing body <NUM> is arranged with a compensation structure on a surface facing the bottom rear housing <NUM>. The compensation structure includes four bosses <NUM> with gradually changing thicknesses. The four bosses <NUM> are distributed at positions close to four corners of the first power supply housing body <NUM>. Surfaces of the four bosses <NUM> facing the bottom rear housing <NUM> are located on the same plane, for carrying the battery <NUM> (as shown in <FIG>).

The first power supply housing body <NUM> is arranged with two pairs of first buckle structures <NUM> between the two bosses <NUM> of the body <NUM> closest to the first channel housing <NUM> and the body <NUM>, and the two pairs of first buckle structures <NUM> include two limiting plates 3124a and two buckle plates 3124b. The two limiting plates 3124a are arranged at intervals. The two buckle plates 3124b are disposed between the two limiting plates 3124a and arranged in a staggered manner. Each buckle plate 3124b is close to a corresponding limiting plate 3124a. The buckle plate 3124b and the adjacent limiting plate 3124a form a pair of first buckle structures <NUM>, configured for positioning and engaging with corresponding components in the bottom rear housing <NUM> to separate the first power supply housing <NUM> and the first channel housing <NUM>.

The lower convex edge <NUM> is arranged with a second fastener <NUM> facing the bottom rear housing <NUM>. The second fastener <NUM> may be a plurality of protruding sheets, and a groove may be defined on a protruding sheet.

Referring to <FIG>, the first power supply housing body <NUM> is arranged with a connecting member <NUM> on a side facing the first housing assembly <NUM>. In some embodiments, the connecting member <NUM> is two protruding pillars, a through hole <NUM> is defined between the two protruding pillars.

Referring to <FIG>, the bottom rear housing <NUM> may be made of a hard material and may include a second channel housing <NUM> facing the above-mentioned first channel housing <NUM> and a second power supply housing <NUM> facing the above-mentioned first power housing <NUM>. The battery <NUM> is arranged inside the power supply housing <NUM>. The second power supply housing <NUM> and the battery <NUM> arranged therein may constitute a power supply assembly.

Referring to <FIG>, the shape and structure of the second channel housing <NUM> are substantially similar to that of the first channel housing <NUM>, such that the two can cooperate with each other. The second channel housing <NUM> has a strip-bent shape. The second channel housing <NUM> includes a body <NUM> bent in a strip shape, and a first convex edge <NUM> and a second convex edge <NUM> that are bent from two long sides of the body <NUM> toward the bottom front housing <NUM>. The first convex edge <NUM> is disposed above the body <NUM>, and the second convex edge <NUM> is disposed below the body <NUM>.

Opposite ends of the body <NUM> are respectively arranged with third fasteners <NUM>. The structure of the third fasteners <NUM> is exactly the same as that of the third fasteners <NUM> of the first channel housing <NUM>, and each third fastener <NUM> includes a plurality of protrusions <NUM> and a plurality of protruding blocks <NUM>, which will not be repeated here. The third fasteners <NUM> and <NUM> of the first channel housing <NUM> and the second channel housing <NUM> are both engaged with the corresponding structure of the connecting member <NUM> to fix the two ends of the first channel housing <NUM> and two ends of the second channel housing <NUM>.

The first and second convex edges <NUM> and <NUM> are arranged with first fasteners <NUM> on opposite outer sides. The first fasteners <NUM> may be a plurality of evenly arranged grooves to cooperate with the first fasteners <NUM> of the first channel housing <NUM>, that is, a plurality of protrusions, thereby snapping together the first channel housing <NUM> and the second channel housing <NUM> to form a channel for the strap assembly <NUM> to pass through.

A hook <NUM> is arranged on the first convex edge <NUM> at a position corresponding to the groove <NUM> on the first convex edge <NUM> of the bottom front housing <NUM> and facing the bottom front housing <NUM>, for buckle with relevant components of the tightness adjustment mechanism <NUM>. Among them, the corresponding groove <NUM> on the bottom front housing <NUM> plays a role of avoiding when the hook <NUM> is buckled with the relevant components of the tightness adjustment mechanism <NUM>.

According to the invention, the second power supply housing <NUM> includes a second power supply housing body <NUM> recessed outward from a middle portion of the body <NUM> of the second channel housing <NUM> and extending downward, a side wall <NUM> bent and extending from an edge of the second power supply housing body <NUM> to the bottom front housing <NUM>, a partition plate <NUM> arranged in the second power supply housing <NUM>, and a power supply bracket <NUM> disposed under the partition plate <NUM> and in the second power supply housing <NUM>.

The length of the second power supply housing body <NUM> is the same as the length of the first power supply housing body <NUM>, and the width of the second power supply housing body <NUM> is substantially the sum of the width of the first power supply housing body <NUM> and the width of the body <NUM> of the second channel housing <NUM>.

A perforated boss 3220a is arranged at the center of the second power supply housing body <NUM> near the upper side wall <NUM>. Two symmetrically disposed isolation plates <NUM> are arranged on both sides of the perforated boss 3220a, and each isolation plate <NUM> defines a notch <NUM> toward the bottom front housing <NUM> to cooperate with the related components of the tightness adjustment mechanism <NUM>.

The second power supply housing body <NUM> further defines a through hole 3220b for arranging a power button 3220c (for details, referring to <FIG>).

The side wall <NUM> below the second power supply housing <NUM> is arranged with a second fastener <NUM> at a position close to an edge. The second fastener <NUM> is a plurality of protrusions arranged at intervals. The positions of the protrusions correspond to those of the second fasteners <NUM> (for example, a number of protrusions) of the first power supply housing <NUM>, such that the second fasteners <NUM> of the first power supply housing <NUM> and the second fasteners <NUM> of the second power supply housing <NUM> engage with each other.

The side wall <NUM> below the second power supply housing <NUM> is further arranged with a buckle structure <NUM>. The buckle structure <NUM> includes two symmetrically arranged protrusions 3224a and a plurality of limiting plates 3224b with gradually changing widths arranged between two protrusions 3224a. The protrusions 3224a are farther away from an outer edge of the lower side wall <NUM> than each protrusion of the second fastener <NUM>.

Referring to <FIG>, one of the side walls <NUM> of the second power supply housing <NUM> adjacent to the second channel housing <NUM> defines a heat dissipation hole 3221a.

Continuing to refer to <FIG>, on the side wall <NUM> below the second power supply housing <NUM>, two parallel positioning plates 3221b are arranged adjacent to the left and right side walls <NUM>.

The partition plate <NUM> divides the second power supply housing <NUM> into two chambers. The upper chamber is configured to accommodate the tightness adjustment mechanism <NUM> and for the strap assembly <NUM>, that is, the first headband <NUM> and the second headband <NUM> to pass through. The lower chamber is configured to accommodate the battery <NUM>.

The partition plate <NUM> is bent several times to form two bending portions <NUM> and a supporting portion <NUM> connected to the two bending portions <NUM>.

The two bending portions <NUM> are disposed far from the center of the supporting portion <NUM>, and the top of the each bending portion <NUM> is higher than the supporting portion <NUM>, such that a space is defined at the bottom of the bending portions <NUM> to accommodate the limiting plates 3124a of the first buckle structure <NUM> of the bottom front housing <NUM>, and the limiting plates 3124a are in contact with the bottom of the bending portions <NUM>.

The supporting portion <NUM> disposed between two bending portions <NUM> is arranged with a first buckle structure <NUM> close to the bending portions <NUM>. The first buckle structure <NUM> is two protrusions, and the positions of the two protrusions correspond to those of the two buckle plates 3124b of the first buckle structure <NUM> of the first power supply housing <NUM>, such that the first buckle structure <NUM> and the buckle plates 3124b are buckled with each other, and the first power supply housing <NUM> and the partition plate <NUM> are buckled together.

Two openings 3228a are defined behind a corresponding position of the supporting portion <NUM> and the first buckle structure <NUM> to engage with the corresponding structure on the power supply bracket <NUM>.

A supporting rib 3228b is arranged at the center of the supporting portion <NUM>, which is arranged between the supporting portion <NUM> and the second power supply housing body <NUM>, and is arranged perpendicular to the supporting portion <NUM> and the second power supply housing body <NUM>, respectively, so as to increase the strength of a joint surface of the supporting portion <NUM> and the second power supply housing body <NUM>. The supporting rib 3228b may be further configured to support the tightness adjustment assembly <NUM>.

Referring to <FIG> and <FIG>, the power supply bracket <NUM> is arranged in the accommodating cavity below the second power supply housing <NUM>, which includes a bracket body <NUM> arranged on the second power supply housing body <NUM> and a first mounting plate <NUM> and a second mounting plate <NUM> that are extending from two opposite sides of the bracket body <NUM>.

A side of the bracket body <NUM> facing the second power supply housing body <NUM> is arranged with stiffening ribs 3240a that are arranged vertically and horizontally. The height of each stiffening rib 3240a gradually decreases from the center to two sides, such that after the bracket body <NUM> and the arc-shaped second power supply housing body <NUM> are in contact, a surface of the bracket body <NUM> facing the bottom front housing <NUM> is flat to carry a battery gasket <NUM> (as shown in <FIG>). The length of the battery gasket <NUM> is equal to the distance between the two positioning plates 3221b, and also equal to the length of the battery <NUM>. The battery gasket <NUM> is arranged on the bracket body <NUM>, and both ends thereof extend beyond the bracket body <NUM> and abut on the two positioning plates 322b so as to stably carry the battery <NUM>.

The first and second mounting plates <NUM> and <NUM> are relatively arranged in parallel. The first mounting plate <NUM> is configured to be arranged on the partition plate <NUM>, and the second mounting plate <NUM> is configured to be arranged on the lower side wall <NUM>.

An edge of the first mounting plate <NUM> is arranged with a buckle portion <NUM> corresponding to the opening 3228a defined on the partition plate <NUM>, and the buckle portion <NUM> is buckled into the opening 3228a, such that the first mounting plate <NUM> is arranged on the partition plate <NUM>.

A side of the second mounting plate <NUM> facing the lower side wall <NUM> is arranged with a buckle structure <NUM> that engages with the buckle structure <NUM> on the lower side wall <NUM>. The buckle structure <NUM> includes a protrusion <NUM> that matches with the protrusion 3224a of the buckle structure <NUM> and a limiting plate <NUM> that matches with the limiting plate 3224b of the buckle structure <NUM>.

Referring to <FIG> and <FIG>, the connecting member <NUM> may include a connecting member body <NUM> and a side wall <NUM> extending from an edge of the connecting member body <NUM>.

As shown in <FIG> and <FIG>, the connecting member body <NUM> is substantially rectangular in shape, and its corners are rounded. The connecting member body <NUM> and the four side walls <NUM> enclose an accommodating chamber <NUM>. A through hole <NUM> is defined on the connecting member body <NUM> for the strap assembly <NUM> to pass through. The connecting member body <NUM> is arranged with a fastener <NUM> in the accommodating chamber <NUM>. The fastener <NUM> may be buckled with the third fastener <NUM> of the first channel housing <NUM> and the third fastener <NUM> of the second channel housing <NUM>, respectively. Specifically, the fastener <NUM> includes a groove <NUM> buckled with the protrusion <NUM> of the third fastener <NUM>, a groove <NUM> buckled with the protrusion <NUM> of the third fastener <NUM>, a buckle piece <NUM> that corresponds to the protruding block <NUM> of the third fastener <NUM>, and a buckle piece <NUM> that corresponds to the protruding block <NUM> of the third fastener <NUM>.

After the bottom front housing <NUM> and the bottom rear housing <NUM> are buckled together, the body <NUM> of the first channel housing <NUM> and the body <NUM> of the second channel housing <NUM> form a channel for the strap assembly <NUM> to extend. After the first power housing <NUM> and the second power source the housing <NUM> are matched, the space above the partition plate <NUM> may be defined as a first accommodating cavity, and the space below the partition plate <NUM> may be defined as a second accommodating cavity. The first accommodating cavity communicates with the channel, and the two may be defined as a first channel. In addition to accommodating the first headband <NUM> and the second headband <NUM> that can overlap each other, the first accommodating cavity may further accommodate the tightness adjustment mechanism <NUM> to adjust the length of the overlapping part of the first headband <NUM> and the second headband <NUM>, thus the solid part that constitutes the channel and the first accommodating cavity may also be defined as a headband and a tightness adjustment mechanism housing (or a first housing); the second accommodating cavity is configured to accommodate the power supply such as the battery <NUM>, and may be defined as a power supply housing (or a second housing).

It can be understood that after the bottom front housing <NUM> and the bottom rear housing <NUM> are buckled together, the first power supply housing <NUM>, the second power supply housing <NUM>, and the body <NUM> of the first channel housing <NUM> may be defined as the first housing; the first channel housing <NUM> and the second channel housing <NUM> on both sides of the first housing may be defined as the second housing.

The various names mentioned above, such as: channel, accommodating cavity, first accommodating cavity, second accommodating cavity, first housing, second housing, headband and tightness adjustment mechanism housing, and power supply housing may be adjusted according to the actual situation, and the present disclosure is not limited to the above-mentioned name limitation. The names of similar structures can be interchanged according to actual conditions. For example, the channel may also be called a first accommodating cavity, the original first accommodating cavity may be called a second accommodating cavity, and the original second accommodating cavity may be called a third accommodating cavity. The names of the first housing and the second housing may also be interchanged.

Referring to <FIG>, which is a perspective exploded view of the tightness adjustment mechanism <NUM> according to the embodiment of the present disclosure. The tightness adjustment mechanism <NUM> may include a first housing <NUM>, a second housing that cooperates with the first housing <NUM> (the second housing herein is the bottom rear housing <NUM> of the second housing assembly <NUM> described above; the bottom rear housing <NUM> may be a component shared by the tightness adjustment mechanism <NUM> and the second housing assembly <NUM>), and a ratchet and pawl mechanism <NUM>. The first housing <NUM> and the second housing are buckled to form a box body, and a body of the ratchet and pawl mechanism <NUM> may be received in the box body. The two headbands (i.e., the first headband <NUM> and the second headband <NUM>) of the strap assembly <NUM> may be extended into the box body to overlap and connect to the ratchet and pawl mechanism <NUM>. The length of the first and second headbands <NUM> and <NUM> that overlap each other may be adjusted by the ratchet and pawl mechanism <NUM>. The second housing is not an essential part, and the ratchet and pawl mechanism <NUM> may be arranged on the first housing <NUM> only to form the tightness adjustment mechanism <NUM>.

Referring to <FIG>, which is a perspective view of the first housing <NUM> from another perspective. The first housing <NUM> may include a housing bottom plate <NUM>. The housing bottom plate <NUM> may be a rectangular plate with uniform thickness, and a central hole <NUM> is defined at the center thereof.

The housing bottom plate <NUM> is formed with side plates <NUM> on two relatively long sides facing the second housing (i.e., the bottom rear housing <NUM>). The height of each side plate <NUM> gradually decreases from the middle to the two sides such that a surface of the side plate <NUM> facing the second housing is arc-shaped so as to be in close contact with the second housing. Two ends of one of the side plates <NUM> is arranged with a first mounting portion <NUM> facing the second housing and in a columnar shape. The first mounting portion <NUM> may be arranged with internal threads to fix the first housing <NUM> to the bottom rear housing <NUM> with bolts passing through the first mounting portion <NUM>. A first buckle structure <NUM> is formed in the middle of the side plate <NUM> arranged with the first mounting portion <NUM>. In some embodiments, the first buckle structure <NUM> is a groove and a convex block formed above the groove, such that the protrusion is disposed on the supporting rib 3228b to support the first housing <NUM> when the first housing <NUM> is fixed to the bottom rear housing <NUM>. A second buckle structure <NUM> is formed on the other side plate <NUM> on which the first mounting portion <NUM> is not formed. In some embodiments, the second buckle structure <NUM> is composed of three grooves arranged at intervals and formed in the middle and a convex block formed above the groove, such that the first housing <NUM> is fixed to the bottom rear housing <NUM> through the groove and the hook <NUM> on the bottom rear housing <NUM>.

The housing bottom plate <NUM> is arranged with a ring-shaped ratchet <NUM> on the surface facing the second housing (i.e., the bottom rear housing <NUM>), a reinforcing rib <NUM> arranged around the ratchet <NUM>, and a second mounting portion <NUM> distributed on an outer circumference of the ratchet <NUM>.

An inner wall of the ratchet <NUM> is arranged with internal teeth <NUM>. The central hole <NUM> is arranged coaxially with the ratchet <NUM>. A bottom of the ratchet <NUM> may be recessed in a direction away from the second housing and is arranged with a rib <NUM>. The rib <NUM> includes a plurality of first ribs <NUM> in rounded shape arranged concentrically with the central hole <NUM> and a plurality of second ribs <NUM> in strip shape intersecting with the first ribs <NUM> and diverging around the center of the central hole <NUM>.

The reinforcing ribs <NUM> may include a plurality of parallel first reinforcing ribs <NUM> extending from an outer peripheral wall of the ratchet <NUM> and a plurality of parallel second reinforcing ribs <NUM> intersecting the first reinforcing ribs <NUM>. The first reinforcing ribs <NUM> extend from the outer peripheral wall of the ratchet <NUM> to edges of two relatively short sides of the housing bottom plate <NUM>. The height of each first reinforcing rib <NUM> gradually decreases from the outer peripheral wall of the ratchet <NUM> toward the short edge of the housing bottom plate <NUM> such that the first reinforcing rib <NUM> has an overall arc shape toward a top surface of the second housing, so as to be buckled with the bottom rear housing <NUM>. In this way, the first and second headbands <NUM>, <NUM> extending into the box body are attached to the first reinforcing ribs <NUM>, such that the first and second headbands <NUM>, <NUM> will be bent without corners. The second reinforcing ribs <NUM> are perpendicular to the first reinforcing ribs <NUM>, that is, arranged perpendicular to two long sides of the housing bottom plate <NUM>.

Referring to <FIG>, the ratchet and pawl mechanism <NUM> may include a ratchet <NUM> formed on the first housing <NUM>, a pawl assembly <NUM> that cooperates with the ratchet <NUM> and is received therein, and a knob assembly <NUM> that is arranged and fixed on the pawl assembly <NUM>, capable of driving the pawl assembly <NUM> to rotate, and slidably connected to the central hole <NUM>.

Referring to <FIG>, the pawl assembly <NUM> includes a first baffle <NUM>, a second baffle <NUM> fixedly connected to the first baffle <NUM>, a rotating plate <NUM> disposed between the first baffle <NUM> and the second baffle <NUM>, a first pawl <NUM>, a second pawl <NUM>, a first spring <NUM>, and a second spring <NUM> that are assembled on the second baffle <NUM>, and a gear <NUM> fixedly arranged on a side of the second baffle <NUM> away from the first baffle <NUM>.

The first baffle <NUM> may be a rounded sheet structure with a central hole <NUM> defined in the middle. The central hole <NUM> is aligned with the central hole <NUM> in the ratchet <NUM> and the central axis of the two is the same. The first baffle <NUM> is arranged with a first connecting portion <NUM> and a second connecting portion <NUM> on a side facing the second baffle <NUM>. The second connecting portion <NUM> has a prismatic shape, and the first connecting portion <NUM> has a cylindrical shape. Outer peripheral walls of the first and second connecting portions <NUM> and <NUM> are arranged with protruding strips so as to tightly cooperate with the corresponding structure on the second baffle <NUM>, such that the first baffle <NUM> and the second baffle <NUM> are fixedly connected.

Referring to <FIG>, the second baffle <NUM> has the same shape and size as the first baffle <NUM>, and a central hole <NUM> is defined in the middle. The central hole <NUM> is aligned with the central hole <NUM> of the first baffle <NUM>. The second baffle <NUM> is arranged with a first clamping portion <NUM> and a second clamping portion <NUM> on a side facing the first baffle <NUM>. The second clamping portion <NUM> and the second connecting portion <NUM> of the first baffle <NUM> have the same shape but different sizes, such that the second connecting portion <NUM> of the first baffle <NUM> can be inserted into the second clamping portion <NUM>. The second clamping portion <NUM> includes a first clamping wall 4220a and a second clamping wall 4220b arranged at an angle to the first clamping wall 4220a, that is, the distance between the first clamping wall 4220a and the second clamping wall 4220b gradually increases in an outward direction along the central hole <NUM>. The first clamping portion <NUM> and the first connecting portion <NUM> of the first baffle <NUM> have the same shape but different sizes, such that the first connecting portion <NUM> of the first baffle <NUM> can be inserted into the first clamping portion <NUM>. A side of the second baffle <NUM> facing the first baffle <NUM> is further arranged with a first mounting shaft <NUM> for arranging the first pawl <NUM>, a second mounting shaft <NUM> for arranging the second pawl <NUM>, a first mounting frame <NUM> for arranging the first spring <NUM>, and a second mounting frame <NUM> for arranging the second spring <NUM>.

The first baffle <NUM> and the second baffle <NUM> may be configured as one mounting member. The second clamping portion <NUM> and the second connecting portion <NUM> may be configured as a limiting portion to cooperate with the rotating plate <NUM>, or may be configured as a fixing portion to fix the first baffle <NUM> and the second baffle <NUM> together; the first clamping portion <NUM> and the first connecting portion <NUM> may be configured as a fixing portion to fix the first baffle <NUM> and the second baffle <NUM> together.

The mounting member is not limited to the assembled form of the first baffle <NUM> and the second baffle <NUM>. Other forms are possible as long as the first pawl <NUM> and the second pawl <NUM> contact and cooperate with the ratchet wheel <NUM>; that is, the mounting member has a notch or a notch-like structure allowing the first pawl <NUM> and the second pawl <NUM> to extend out of a space defined by the mounting member to contact and cooperate with the ratchet <NUM>. Therefore, the mounting member may be a box with a notch or a notch-like structure.

Of course, the mounting member may also be only the first baffle <NUM> or the second baffle <NUM>. For example, the mounting member is the second baffle <NUM>, and the second clamping portion <NUM> and the second connecting portion <NUM> are formed on the first baffle <NUM> or the second baffle <NUM> as a limiting portion.

The first mounting shaft <NUM> and the second mounting shaft <NUM> are disposed on two sides of the first clamping portion <NUM> and are arranged symmetrically with respect to the first clamping portion <NUM>.

The first mounting frame <NUM> and the second mounting frame <NUM> are symmetrically arranged with respect to the first clamping portion <NUM>, and their shapes, sizes, and structures are completely the same.

Referring to <FIG> and <FIG>, the first mounting frame <NUM> includes a first blocking wall 4227a, a second blocking wall 4227b arranged at an angle with the first blocking wall 4227a, and a connecting wall 4227c connecting an end of the first blocking wall 4227a and an end of the second blocking wall 4227b. The first blocking wall 4227a, the second blocking wall 4227b, and the connecting wall 4227c enclose a receiving space 4227d for receiving the first spring <NUM>. The first blocking wall 4227a extends from an outer peripheral wall of the first clamping portion <NUM>, and the connecting wall 4227c is arranged with a clamping shaft 4227e facing the receiving space 4227d. The first spring <NUM> is sleeved on the clamping shaft 4227e.

Since the second mounting frame <NUM> has the same structure as the first mounting frame <NUM>, it will not be described in detail here, and only its components will be listed. The second mounting frame <NUM> includes a first blocking wall 4228a, a second blocking wall 4228b, a connecting wall 4228c, a receiving space 4228d, and a clamping shaft 4228e. The first blocking wall 4227a of the first mounting frame <NUM> and the first blocking wall 4228a of the second mounting frame <NUM> are connected to each other, and an end of the connecting wall 4227c and an end of the connecting wall 4228c are connected to each other.

It should be noted that the first spring <NUM> and the second spring <NUM> may be other elastic members, such as tension springs, compression springs, objects that provide telescopic force, etc., such that the first pawl <NUM>, the second pawl <NUM>, and the ratchet <NUM> cooperate to complete the transition between the two states of engagement and non-engagement. The first mounting frame <NUM> and second mounting frame <NUM> may also be changed to other structures that can fix the elastic member according to the difference of the elastic member.

The rotating plate <NUM> is an eccentric wheel structure with a through hole <NUM>. Of course, the rotating plate <NUM> may also be integrated with the knob assembly <NUM> at the through hole <NUM>. The through hole <NUM> is aligned with the central hole <NUM> of the second baffle <NUM> and has the same axis as the central hole <NUM>. In some embodiments, an inner surface of the through hole <NUM> is polygonal, such as a hexagon. An end of the rotating plate <NUM> away from the through hole <NUM> defines a notch <NUM>. The shape of the notch <NUM> is the same as that of the first clamping portion <NUM> of the second baffle <NUM>, but the size is different. The size of the notch <NUM> is larger than that of the first clamping portion <NUM> to receive the first clamping member <NUM>. Among them, the second clamping portion <NUM> and the second connecting portion <NUM> are configured as a limiting portion to cooperate with the notch <NUM>; the notch <NUM> has two opposite inner walls, i.e., a first inner wall 4232a and a second inner wall 4232b opposite to the first inner wall 4232a; a peripheral surface of the rotating plate <NUM> includes an outer wall surface <NUM>. When the rotating plate <NUM> rotates around the axis of the through hole <NUM>, the rotating plate <NUM> and the second clamping portion <NUM> have only three states: a state where only the first inner wall 4232a is in contact with the first clamping wall 4220a, a state where the rotating plate <NUM> is not in contact with the second clamping portion <NUM>, and a state where only the second inner wall 4232b is in contact with the second clamping wall 4220b; that is, the limiting portion is configured to be or not to be in contact with the inner wall surface of the notch <NUM>, enabling the rotating plate <NUM> to rotate at an angle around its rotation axis (the axis of the through hole <NUM>).

Referring to <FIG>, the first pawl <NUM> is pivotally arranged on the first mounting shaft <NUM> of the second baffle <NUM> and can rotate around the first mounting shaft <NUM>. A pivot hole <NUM> is defined in the middle of the first pawl <NUM> to be pivotally connected to the first mounting shaft <NUM>. The first pawl <NUM> has two opposite ends, i.e., a first end <NUM> connected to the first spring <NUM> and a second end <NUM> abutting against the outer wall <NUM> of the rotating plate <NUM>. A side of the first end <NUM> facing the receiving space 4227d of the first mounting frame <NUM> is arranged with a mounting shaft 4242a, such that the first spring <NUM> is sleeved and arranged on the mounting shaft 4242a. A side of the first end <NUM> facing away from the first mounting frame <NUM> is arranged with a corner 4242b, and the corner 4242b is configured to engage with the internal teeth <NUM> of the ratchet <NUM> (referring to <FIG>). A side of the second end <NUM> facing the rotating plate <NUM> has a contact surface 4244a. In some embodiments, the contact surface 4244a is a curved surface to be in linear contact with the outer wall surface <NUM> of the rotating plate <NUM>, thereby reducing the pressure between the two.

The second pawl <NUM> and the first pawl <NUM> are arranged symmetrically with respect to the first clamping portion <NUM> of the second baffle <NUM>, and they have exactly the same shape and structure, which will not be repeated here, and only its components are listed. The second pawl <NUM> includes a pivot hole <NUM>, a first end <NUM>, a second end <NUM>, a mounting shaft 4252a, a corner 4252b, and a contact surface 4254a.

During the mounting process of the first spring <NUM>, an end is sleeved on the clamping shaft 4227e in the first mounting frame <NUM>, and the other end is sleeved on the mounting shaft 4242a of the first pawl <NUM>, such that the first spring <NUM> is arranged in the first mounting frame <NUM>. The first pawl <NUM> can rotate around the first mounting shaft <NUM>. When the first pawl <NUM> rotates, the first end <NUM> of the first pawl <NUM> is driven to move, thereby pushing the first spring <NUM> in the first mounting frame <NUM> with varying degrees of compression.

The structure and function of the second spring <NUM> are exactly the same as the first spring <NUM>, and it is arranged in the second mounting frame <NUM>, which will not be repeated here.

The outer wall surface <NUM> of the rotating plate <NUM> is a curved surface, and the outer wall surface <NUM> is configured such that when the rotating plate <NUM> rotates around its rotation axis, the outer wall surface <NUM> pushes the first and second pawls <NUM>, <NUM> to rotate, such that the first and second pawls <NUM>, <NUM> and the ratchet <NUM> complete the transition between the two states of engagement and non-engagement. Referring to <FIG>, when no external force is applied to force the rotating plate <NUM> or the mounting member (the combination of the first baffle <NUM> and the second baffle <NUM>) to rotate, due to the action of the first spring <NUM> and the second spring <NUM>, the rotating plate <NUM> and the outer surface of the limiting portion (that is, the outer surface of the second clamping portion <NUM>) are in a non-contact state, and the pawl assembly <NUM> is engaged with the ratchet <NUM>. When an external force intervenes to force the rotating plate <NUM> to rotate around the axis of the penetration hole <NUM>, two states occur:.

(<NUM>) Transition from a non-contact state to a state where only the first inner wall 4232a is in contact with the first card wall 4220a. In this case, in a direction in which the rotating plate <NUM> rotates around the through hole <NUM>, a distance from a contact position of the first pawl <NUM> with the outer wall surface <NUM> to the through hole <NUM> gradually increases, such that the first end <NUM> of the first pawl <NUM> moves and disengages from the internal teeth <NUM> of the inner wall of the ratchet <NUM>; a distance from a contact position of the second pawl <NUM> with the outer wall surface <NUM> to the through hole <NUM> gradually decreases, but the ratchet <NUM> squeezes the second spring <NUM> of the second pawl <NUM>, such that the second pawl <NUM> and the internal teeth <NUM> of the inner wall of the ratchet <NUM> are also in a disengaged state. Finally, the pawl assembly <NUM> and the ratchet <NUM> are disengaged from the engaged state.

(<NUM>) Transition from a non-contact state to a state where only the second inner wall 4232b is in contact with the second card wall 4220b. In this case, in a direction in which the rotating plate <NUM> rotates around the through hole <NUM>, a distance from a contact position of the second pawl <NUM> with the outer wall surface <NUM> to the through hole <NUM> gradually increases, such that the second end <NUM> of the second pawl <NUM> moves and disengages from the internal teeth <NUM> of the inner wall of the ratchet wheel <NUM>; a distance from a contact position of the first pawl <NUM> with the outer wall surface <NUM> to the through hole <NUM> gradually decreases, but the ratchet <NUM> squeezes the first spring <NUM> of the first pawl <NUM>, such that the first pawl <NUM> and the internal teeth <NUM> of the inner wall of the ratchet <NUM> are also in a disengaged and locked state. Finally, the pawl assembly <NUM> and the ratchet wheel <NUM> are disengaged from the engaged state.

Referring to <FIG>, the gear <NUM> defines a central hole <NUM> which is aligned with the central hole <NUM> of the second baffle <NUM> and has the same central axis as the central hole <NUM>. The gear <NUM> is fixed on a side of the second baffle <NUM> away from the first baffle <NUM>.

Further referring to <FIG>, when the strap assembly <NUM> is connected to the tightness adjustment mechanism <NUM>, an end of the first headband <NUM> with the length adjustment hole <NUM> and an end of the second headband <NUM> with the length adjustment hole <NUM> are stacked. In this case, the first serrations <NUM> and the second serrations <NUM> are disposed on opposite sides of the two stacked length adjustment holes <NUM> and <NUM>, and the gear <NUM> is disposed in the stacked two length adjustment holes <NUM> and <NUM> and engages with the first serrations <NUM> and the second serrations <NUM>.

Referring to <FIG>, the knob assembly <NUM> may include a rotating disk <NUM>, a first transmission shaft <NUM> extending from an inner surface of the rotating disk <NUM>, and a second transmission shaft <NUM> arranged on the first transmission shaft <NUM>.

A side surface of the rotating disk <NUM> may have a rough structure. In some embodiments, an outer surface of the rotating disk <NUM> defines a plurality of grooves arranged in parallel to form a rib between two adjacent grooves.

The first transmission shaft <NUM> and the second baffle <NUM> have the same central axis. The first transmission shaft <NUM> is sequentially formed with a first connecting shaft <NUM>, a second connecting shaft <NUM>, and a third connecting shaft <NUM>, which are coaxially arranged along a direction of the central axis of the second baffle <NUM>. Both the first connecting shaft <NUM> and the second connecting shaft <NUM> are round shafts, that is, the outer peripheral surface is circular and the outer diameter of the first connecting shaft <NUM> is greater than the outer diameter of the second connecting shaft <NUM>. The outer peripheral surface of the third connecting shaft <NUM> is polygonal, and in some embodiments is a hexagon. A distance between the center of the hexagon and any side of the hexagon is less than the radius of the second connecting shaft <NUM>. A central hole <NUM> is defined in the center of the third connecting shaft <NUM>, and the central hole <NUM> includes internal threads.

The second transmission shaft <NUM> and the first transmission shaft <NUM> have the same central axis. The second transmission shaft <NUM> is sequentially formed with a disk <NUM>, a first connecting shaft <NUM> connected to the disk <NUM>, a second connecting shaft <NUM> connected to the first connecting shaft <NUM>, and a third connecting shaft <NUM> connected to the second connecting shaft <NUM>, that are coaxially arranged along a direction of the central axis away from the rotating disk <NUM>.

The outer diameter of the disk <NUM> is greater than the outer diameter of the first connecting shaft <NUM> and greater than the outer diameter of the gear <NUM>. A bottom of the disk <NUM> defines a recess 4330a, and a through hole 4330b is defined in the middle of the recess 4330a. An inner wall of the recess 4330a is polygonal, and in some embodiments is hexagonal, so as to cooperate with the third connecting shaft <NUM> of the first transmission shaft <NUM>. When the gear <NUM> is disposed in the two length adjustment holes <NUM> and <NUM> of the stacked first and second headbands <NUM> and <NUM>, the disk <NUM> cooperates with the gear <NUM> and the second baffle <NUM> to positionally limit the first and second headbands <NUM> and <NUM>, preventing disengagement of the first and second headbands <NUM> and <NUM> from engagement with the gear <NUM>.

Both the first connecting shaft <NUM> and the third connecting shaft <NUM> are round shafts, that is, the outer peripheral surface is rounded and the outer diameter of the first connecting shaft <NUM> is greater than the outer diameter of the third connecting shaft <NUM>. The outer peripheral surface of the second connecting shaft <NUM> is polygonal, and in some embodiments is a hexagon. A distance between the center and any side of the hexagon is less than the radius of the first connecting shaft <NUM> and greater than the radius of the third connecting shaft <NUM>. The shape and size of the second connecting shaft <NUM> match the shape and size of the through hole <NUM> of the rotating plate <NUM>, such that the rotating plate <NUM> is fixedly connected to the second connecting shaft <NUM>.

During the assembling process of the strap assembly <NUM>, the second housing assembly <NUM>, and the tightness adjustment mechanism <NUM>, the strap assembly <NUM> is assembled first, and the first headband <NUM> and the second headband <NUM> of the strap assembly <NUM> are respectively arranged to pass through the through hole <NUM> of one connecting member <NUM>; the first transmission shaft <NUM> of the rotating disk <NUM> passes through the perforated boss 3220a from the rear of the bottom rear housing <NUM>, and the disk <NUM> is arranged on the third connecting shaft <NUM>; in this way, the second transmission shaft <NUM> is engaged with the first transmission shaft <NUM>, and a screw <NUM> is passed through the through hole 4330b at the bottom of the disk <NUM> and is threadedly connected with the central hole <NUM> of the third connecting shaft <NUM> of the first transmission shaft <NUM>; the second transmission shaft <NUM> and the first transmission shaft <NUM> are thus firmly connected together.

The position of the length adjustment hole <NUM> of the first headband <NUM> is overlapped with the position of the length adjustment hole <NUM> of the second headband <NUM>, and the gear <NUM> is placed in the length adjustment hole <NUM> and the length adjustment hole <NUM>; the second transmission shaft <NUM> is passed through the gear <NUM> and the central hole <NUM>, and the central hole <NUM> of the second baffle <NUM>; the first pawl <NUM>, the second pawl <NUM>, the first spring <NUM>, the second spring <NUM>, the second baffle <NUM>, and the rotating plate <NUM> are arranged on the second baffle <NUM>. For example, the rotating plate <NUM> is passed through the third connecting shaft <NUM> of the second transmission shaft <NUM> and sleeved on the second connecting shaft <NUM>, such that the rotating plate <NUM> is fixedly arranged relative to the first and second rotating shafts <NUM>, <NUM>. The second clamping portion <NUM> on the second baffle <NUM> is placed in the notch <NUM> of the rotating plate <NUM>; the first ends <NUM> and <NUM> of the first pawl <NUM> and the second pawl <NUM> are in contact with the outer wall surface of the outer wall surface <NUM> of the rotating plate <NUM>.

The first baffle <NUM> is buckled with the second baffle <NUM>, and the first connecting portion <NUM> on the first baffle <NUM> is engaged with the first clamping portion <NUM> on the second baffle <NUM>, such that the first baffle <NUM> is assembled on the second transmission shaft <NUM>, and the first baffle <NUM> is fixedly arranged relative to the second baffle <NUM>, that is, the first baffle <NUM> can be radially rotated with the second baffle <NUM> with respect to the second transmission shaft <NUM>; the first pawl <NUM>, the second pawl <NUM>, the first spring <NUM>, the second spring <NUM>, and the rotating plate <NUM> are fixed between the first baffle <NUM> and the second baffle <NUM>; the pawl assembly <NUM> is received in the ratchet <NUM>, and the third connecting shaft <NUM> of the second transmission shaft <NUM> is extended into the central hole <NUM> in the ratchet <NUM> for matching; the first housing <NUM> is buckled with the bottom rear housing <NUM>; the bottom of the gear <NUM> abuts against the disk <NUM>, and the disk <NUM> squeezes and limits the first headband <NUM> and the second headband <NUM> (referring to <FIG>); the convex block of the first buckle structure <NUM> is placed on the supporting rib 3228b to support the first housing <NUM>; the second buckle structure <NUM> is fastened with the hook <NUM> of the bottom rear housing <NUM>, and the first mounting portion <NUM> is fixed to the bottom rear housing <NUM> with screws; in this way, the first headband <NUM> and the second headband <NUM> are fixed inside the tightness adjustment mechanism <NUM>. That is, the assembly of the strap assembly <NUM> and the tightness adjustment mechanism <NUM> is completed.

The buckle portion <NUM> on the power supply bracket <NUM> is fastened to the corresponding opening 3228a on the supporting portion <NUM>; the buckle structure <NUM> on the power supply bracket <NUM> is fastened to the corresponding buckle structure <NUM> on the side wall <NUM>; the battery gasket <NUM> is laid on the power supply bracket <NUM> and the battery <NUM> is placed; the bottom front housing <NUM> and the bottom rear housing <NUM> are assembled; the first fastener <NUM> on the bottom rear housing <NUM> is buckled with the corresponding first fastener <NUM> on the first channel housing <NUM>; the second fastener <NUM> on the bottom rear housing <NUM> is buckled with the corresponding second fastener <NUM> on the convex edge <NUM>; the two connecting members <NUM> are arranged, and the fastener <NUM> of the connecting member <NUM> is buckled with the third fastener <NUM> of the bottom front housing <NUM> and the third fastener <NUM> of the bottom rear housing <NUM> to fix the bottom front housing <NUM> and the bottom rear housing <NUM>, such that the strap assembly <NUM> is assembled with the second housing assembly <NUM> and the tightness adjustment mechanism <NUM>.

During the adjustment process of the strap assembly <NUM>, referring to <FIG>, in an initial state, the first spring <NUM> pushes up the first pawl <NUM>, such that the first end <NUM> is engaged with the internal teeth <NUM> of the ratchet <NUM>; the second spring <NUM> pushes up the second pawl <NUM>, such that the first end <NUM> is engaged with the internal teeth <NUM> of the ratchet <NUM>. In this case, the first pawl <NUM> and the second pawl <NUM> are in contact with the rotating plate <NUM>, such that the rotating plate <NUM> and the second clamping portion <NUM> are in a non-contact state. The strap assembly <NUM> acts on the mounting member such that when the mounting member rotates in any direction, there is a pawl that engages with the internal teeth <NUM> of the ratchet wheel <NUM>, which makes the limiting portion of the mounting member unable to directly contact with the rotating plate <NUM>; the first baffle <NUM> is forced from completing its rotation, which in turn snaps on the strap assembly <NUM> and prevents loosening of the strap assembly <NUM>.

During the length adjustment process of the strap assembly <NUM> through the knob assembly <NUM>, the knob assembly <NUM> drives the rotating plate <NUM> to rotate, such that the non-contact state between the rotating plate <NUM> and the second clamping portion <NUM> is transformed into a state where only the first inner wall 4232a is in contact with the first clamping wall 4220a or a state where only the second inner wall 4232b is in contact with the second clamping wall 4220b. Both states will cause the pawl assembly <NUM> and the ratchet <NUM> to disengage from the engaged state, thereby driving the first baffle <NUM> rotates, and the tightness of the strap assembly <NUM> is adjusted through the gear <NUM>.

Understandably, the first housing <NUM> may be the bottom front housing <NUM> in the second housing assembly <NUM>, and the ratchet <NUM> may be formed on the body <NUM>, the central hole <NUM> is formed on the body <NUM>, and the ratchet and pawl mechanism <NUM> is matched with the ratchet <NUM>; in addition, when the first and second headbands <NUM>, <NUM> are overlapped and connected to the tightness adjustment mechanism <NUM>, and when the tightness adjustment mechanism <NUM> adjusts the overlapping length of the first and second headbands <NUM>, <NUM>, the distances from the first and second headband covers <NUM>, <NUM> to the tightness adjustment mechanism <NUM> and the headband and to the tightness adjustment mechanism housing will also be adjusted accordingly. Among them, the bottom front housing <NUM> and the bottom rear housing <NUM> may form the tightness adjustment mechanism housing as a portion of the tightness adjustment mechanism. Of course, the first housing <NUM> and the bottom rear housing <NUM> may form the tightness adjustment mechanism housing.

Referring to <FIG>, which is a perspective structural view of the head-mounted device <NUM> according to an embodiment, in which the force receiving assembly <NUM> includes a first force receiving member <NUM> arranged on the first housing assembly <NUM> and a second force receiving member <NUM> arranged on the second housing assembly <NUM>. In this embodiment, the first housing assembly <NUM>, the strap assembly <NUM>, the second housing assembly <NUM>, and the tightness adjustment mechanism <NUM> may form a ring frame with adjustable elasticity. The first force receiving member <NUM> is disposed on a side of the ring frame and the second force receiving member <NUM> is disposed on the other side of the ring frame, for example, on upper and lower sides of the first housing assembly <NUM> and the second housing assembly <NUM> respectively. The first force receiving member <NUM> is inclined to a side close to the second force receiving member <NUM>. In addition, the first force receiving member <NUM> is a first force receiving point, the first housing assembly <NUM> is a second force receiving point, and the second force receiving member <NUM> is a third force receiving point. The head-mounted device <NUM> is firmly supported and worn through the first, second, and third force receiving points.

It can be understood that the "first force receiving member" and the "second force receiving member" can also be referred to as "force receiving members", respectively.

Referring to <FIG> and <FIG>, which are perspective views of the first force receiving member <NUM> from two different perspectives according to an embodiment. The first force receiving member <NUM> may include a supporting plate <NUM>, a mounting plate <NUM> arranged at substantially an angle relative to the supporting plate <NUM>, a neck portion <NUM> disposed between the supporting plate <NUM> and the mounting plate <NUM> and connecting the two, and a soft pad <NUM> arranged on the supporting plate <NUM>.

The supporting plate <NUM> may be a quadrangular plate body, and a side of the supporting plate <NUM> away from the second housing assembly <NUM> and the soft pad <NUM> is a curved surface. A side of the supporting plate <NUM> on which the soft pad <NUM> is arranged may be a concave curved surface to substantially match the contour of the user's forehead or the upper portion of the forehead. The supporting plate <NUM> extends from a side of the mounting plate <NUM> and is inclined to a side where the soft pad <NUM> is arranged, such that the mounting plate <NUM> and the supporting plate <NUM> are arranged at an obtuse angle. The neck portion <NUM> may have the same extension direction as the support plate <NUM>, that is, the neck portion <NUM> extends from a side of the mounting plate <NUM>, such that the neck portion <NUM> and the mounting plate <NUM> are arranged at an obtuse angle. The neck portion <NUM> may be bent upward from the mounting plate <NUM>, such that the neck portion <NUM> and the mounting plate <NUM> are arranged at a right angle or an acute angle.

The mounting plate <NUM> is a plate-like structure with a thickness, which is made of a hard material, and is configured to cooperate with the first housing assembly <NUM> for mounting. The mounting plate <NUM> defines a strip-shaped adjustable through hole <NUM> corresponding to the first housing assembly <NUM>. There may be two adjustable through holes <NUM> arranged, and the adjustable through holes <NUM> may be parallel to each other. The neck portion <NUM> is made of a hard material.

The soft pad <NUM> corresponds to the shape of the supporting plate <NUM> and is fixed on the supporting plate <NUM> facing the second housing assembly <NUM>. The soft pad <NUM> and the mounting plate <NUM> are disposed on opposite sides of the supporting plate <NUM>, such that the soft pad <NUM> and the adjustable through hole <NUM> are also located on opposite sides of the supporting plate <NUM>.

Referring to <FIG>, which is an exploded view of the second force receiving member <NUM> of the force receiving assembly <NUM> and the bottom front housing <NUM> of the second housing assembly <NUM> according to an embodiment. The second force receiving member <NUM> is fixedly arranged on the bottom front housing <NUM> of the second housing assembly <NUM>. Referring to <FIG>, which is a perspective exploded view and a perspective assembly view of the second force receiving member <NUM> according to an embodiment. The second force receiving member <NUM> may include a fixing plate <NUM> and a soft pad <NUM> covered on the fixing plate <NUM>.

The shape and size of the fixing plate <NUM> match the shape and size of the first power supply housing body <NUM> of the bottom front housing <NUM> of the second housing assembly <NUM>, and a mounting hole <NUM> is defined on the fixing plate <NUM> facing the connecting member <NUM> on the first power body <NUM>.

During the mounting process of the second force receiving member <NUM> on the second housing assembly <NUM>, the soft pad <NUM> is first sleeved on the fixing plate <NUM>, and the fixing plate <NUM> is aligned with the connecting member <NUM> on the first power supply housing body <NUM> such that the connecting member <NUM> is firmly inserted into the mounting hole <NUM>, and further the second force receiving member <NUM> is firmly mounted on the second housing assembly <NUM>. In some embodiments, the positions of the connecting member <NUM> and the mounting hole <NUM> may be changed mutually, that is, the mounting hole <NUM> is arranged on the second housing assembly <NUM>, and the connecting member <NUM> is arranged on the second force receiving member <NUM>. Of course, the present disclosure is not limited to the form of the mounting hole <NUM> and the connecting member <NUM>, and any method that allows the second force receiving member <NUM> to be arranged on the second housing assembly <NUM> can be applied, for example, glue bonding.

When the user wears the head-mounted device <NUM>, the strap assembly <NUM> connects the first housing assembly <NUM> and the second housing assembly <NUM> together to form a wearable ring frame, and the second force-receiving member <NUM> and the first housing assembly <NUM> are configured as main force receiving points. The first housing assembly <NUM> is in contact with the user's forehead, and the second force receiving member <NUM> is in contact with the back of the user's head. The user contacts the head-mounted device <NUM> for support through the forehead and back of the head. Since the first force receiving member <NUM> is arranged obliquely on the forehead toward the second force receiving member <NUM>, and is in contact with the portion above the user's forehead, the first force receiving member <NUM> can stably support the head-mounted device <NUM>, thus allowing the user to wear more comfortably.

Claim 1:
A head-mounted device (<NUM>), comprising:
a first housing (<NUM>), defining a first accommodating cavity and a second accommodating cavity that are separated in an upper-lower direction;
two second housings (<NUM>, <NUM>); wherein one of the two second housings extends from a side of the first housing, and the other of the two second housings extends from another side of the first housing opposite to the side of the first housing; the two second housings define two third accommodating cavities connected to the first accommodating cavity, one of the two third accommodating cavities disposed on a left side of the first accommodating cavity, the other of the two third accommodating cavities disposed on a right side of the first accommodating cavity; a portion of the first housing on a side with the second accommodating cavity extends beyond the second housing; and
a strap assembly (<NUM>), connected to the first housing and comprising a first headband (<NUM>) and a second headband (<NUM>); wherein an end of the first headband (<NUM>) is received in the first accommodating cavity and one of the two third accommodating cavities corresponding to the first headband (<NUM>), and the other end of the first headband (<NUM>) is disposed outside the first accommodating cavity; an end of the second headband (<NUM>) is received in the first accommodating cavity and the other of the two third accommodating cavities, and the other end of the second headband (<NUM>) is disposed outside the first accommodating cavity;
characterized in that,
the first housing comprises:
a first power supply housing (<NUM>); and
a second power supply housing (<NUM>), buckled with the first power supply housing (<NUM>);
wherein a partition plate (<NUM>) is arranged in the second power supply housing (<NUM>) and configured to divide the first accommodating cavity and the second accommodating cavity;
wherein a battery is received in the second accommodating cavity.