Head-mounted device including dial unit

Abstract

The head-mounted device according to an embodiment disclosed in the present document may comprise: a main body; a front case movably coupled to the main body; a dial unit disposed on the front case; a first holding structure disposed on the main body; a second holding structure fastened to the first fixing structure on the basis of a movement of the dial unit in a first direction, and unfastened from the first holding structure on the basis of a movement of the dial unit in a second direction; a wire wound around the dial unit; and a rear band connected to the wire so as to move with respect to the front case on the basis of a rotation of the dial unit. The main body may move in one direction from among a third direction and a fourth direction opposite to the third direction with respect to the front case in a state in which the second holding structure is unfastened from the first holding structure. Various other embodiments are possible.

Description

Head-mounted device including a dial unit

[0001] Various embodiments disclosed in this document relate to a head mounted device including a dial unit.

[0002] With recent technological advancements, electronic devices are increasingly evolving beyond their standard rectangular form into diverse shapes. For example, these devices may include wearable electronic devices that can be worn on certain parts of the body. An example of a wearable electronic device worn on a specific part of the body is a head-mounted device (HMD), which is mounted on the user's head and provides the user with virtual reality images.

[0003] The above information may be provided as background art to aid in understanding the present disclosure. No claim or determination is made as to whether any of the above is applicable as prior art related to the present disclosure.

[0004] A head-mounted device may include a main body that provides a virtual reality image to a user, a forehead support that is connected to the main body and contacts the user's forehead, and a rear band that is connected to the main body and contacts the back of the user's head so that the main body can be worn on the user's face. The user can wear the head-mounted device by adjusting the length of the rear band relative to the forehead support. For example, when a length adjustment dial located on the rear band is rotated, a wire can be wound or unwound around the length adjustment dial, thereby shortening or lengthening the distance between the rear band and the forehead support. Accordingly, the user can adjust the distance between the rear band and the forehead support to fit his or her head shape by rotating the length adjustment dial.

[0005] Meanwhile, a head-mounted device may require a diopter adjustment function to compensate for low vision in a user. The main body of the head-mounted device may be equipped with multiple lenses corresponding to the user's left and right eyes. Diopter adjustment may be achieved by adjusting the distance between the multiple lenses and the user's eyes. For example, when a diopter adjustment dial located on the forehead support is rotated, the forehead support may move relative to the main body. For example, when the diopter adjustment dial is rotated in one direction, the forehead support may move forward relative to the main body, thereby reducing the distance between the lenses and the user's eyes. When the diopter adjustment dial is rotated in the opposite direction, the forehead support may move backward relative to the main body, thereby increasing the distance between the lenses and the user's eyes. Therefore, the distance between the user's eyes and the lenses located on the main body may be changed, thereby allowing the diopter to be adjusted.

[0006] However, when wearing the head-mounted device, discomfort may occur due to adjusting the diopter adjustment dial and the length adjustment dial separately. For example, if both diopter adjustment and rear band length adjustment are required, the rear band must be adjusted after adjusting the diopter. If the above order is not followed, the following problems may occur. For example, if the distance between the forehead support and the rear band is adjusted to fit the user's head shape using the length adjustment dial and the diopter adjustment dial is rotated, the distance between the forehead support and the rear band may change as the forehead support moves relative to the main body. When the forehead support moves forward with respect to the main body, the distance between the forehead support and the rear band increases, which may cause the head-mounted device to slip off the user's head. Alternatively, when the forehead support moves backward with respect to the main body, the distance between the forehead support and the rear band decreases, which may cause the user's head to be squeezed by the head-mounted device.

[0007] Additionally, the forehead support may include a cushion portion that comes into contact with the user's forehead. If the curvature of the cushion portion is different from the curvature of the user's forehead, the user's forehead may only rest on the cushion portion in some areas, which may reduce the wearing comfort of the head-mounted device.

[0008] The technical tasks to be achieved in this document are not limited to the technical tasks mentioned above, and other technical tasks not mentioned will be clearly understood by those with ordinary skill in the technical field to which this document pertains from the description below.

[0009] According to one embodiment disclosed in the present document, a head mounted device includes a main body, a front case movably coupled with the main body, a dial unit disposed on the front case, a first fixed structure disposed on the main body, a second fixed structure engaged with the first fixed structure based on movement of the dial unit in a first direction and detached from the first fixed structure based on movement of the dial unit in a second direction, a wire wound around the dial unit, and a rear band connected to the wire and moving with respect to the front case based on rotation of the dial unit, wherein the main body can move in any one of a third direction and a fourth direction opposite to the third direction with respect to the front case in a state in which the second fixed structure is detached from the first fixed structure.

[0010] According to one embodiment disclosed in the present document, a fastening structure of a main body and a front case may include a dial unit disposed in the front case and including a catch portion, a catch protrusion disposed in the front case and fastened to the catch portion as the dial unit moves in a first direction with respect to the front case and separated from the catch portion as the dial unit moves in a second direction with respect to the front case, a first fixing structure disposed in the main body, and a second fixing structure fastened to the first fixing structure based on movement of the dial unit in the first direction and detached from the first fixing structure based on movement of the dial unit in the second direction.

[0011] According to one embodiment disclosed in the present document, the length of the rear band with respect to the forehead support (e.g., front case) can be adjusted through a single dial unit. In one embodiment, when the length of the rear band with respect to the forehead support is adjusted through the dial unit, even when the diopter is adjusted, the distance between the forehead support and the rear band does not change, so that the wearing state of the head-mounted device can be maintained. For example, when adjusting the diopter, the distance between the forehead support and the rear band may not change depending on whether the main body (e.g., main body) is moved forward or backward with respect to the forehead support.

[0012] Additionally, according to one embodiment of the present disclosure, the cushion portion positioned on the forehead support portion can be adjusted according to the user's head shape. Accordingly, the user can wear the head-mounted device more comfortably.

[0013] The effects that can be obtained from the present disclosure are not limited to the effects mentioned above, and other effects that are not mentioned can be clearly understood by a person having ordinary skill in the art to which the present disclosure belongs from the description below.

[0014] In connection with the description of the drawings, the same or similar reference numerals may be used for the same or similar components.

[0015] FIG. 1 is an exploded perspective view of a head mount device according to one embodiment of the present disclosure.

[0016] FIGS. 2A and 2B are drawings showing movement of the main body relative to the front case in a state where the dial unit moves in a second direction relative to the front case and the fixing structures are released, according to one embodiment of the present disclosure.

[0017] FIG. 3 is a drawing of a cushion portion divided and arranged on one side of a front case according to one embodiment of the present disclosure.

[0018] FIG. 4A is a rear perspective view of a dial unit according to one embodiment of the present disclosure.

[0019] FIGS. 4b and 4c are exploded perspective views of a dial unit according to one embodiment of the present disclosure.

[0020] FIG. 5A is a drawing illustrating a structural linkage relationship of a first wheel structure, a second wheel structure, and a third wheel structure according to one embodiment of the present disclosure.

[0021] FIG. 5b is a drawing illustrating a structural linkage relationship between a first wheel structure and a third wheel structure according to one embodiment of the present disclosure.

[0022] FIGS. 6A, 6B, and 6C are drawings showing a connection relationship between a wire and a first wheel structure according to one embodiment of the present disclosure.

[0023] FIG. 7 is a drawing of a dial unit and a rear band connected via a wire according to one embodiment of the present disclosure.

[0024] FIGS. 8A, 8B, 8C and 8D are drawings showing movement of the main body relative to the front case in a state where the dial unit moves in a second direction relative to the front case and the fixing structures are released, according to one embodiment of the present disclosure.

[0025] FIGS. 9A, 9B, 9C, and 9D are drawings of a state in which a first fixed structure and a second fixed structure are fastened as the dial unit moves in a first direction according to one embodiment of the present disclosure.

[0026] FIG. 10A is a drawing of a state in which the main body can move relative to the front case as the protrusion formed on the actuator of the dial unit is removed from the fastening groove of the fixed plate according to one embodiment of the present disclosure.

[0027] FIG. 10b is a drawing of a state in which a protrusion formed on an actuator of a dial unit is fastened to a fastening groove of a fixed plate according to one embodiment of the present disclosure.

[0028] In the following description, various embodiments of this document are described with reference to the attached drawings. It should be understood that the various embodiments of this document and the terminology used herein are not intended to limit the technical features described herein to specific embodiments, but rather encompass various modifications, equivalents, or alternatives of the embodiments.

[0029] In connection with the description of the drawings, similar reference numerals may be used for similar or related components. The singular form of the noun corresponding to an item may include one or more of said items, unless the context clearly indicates otherwise.

[0030] In this document, phrases such as "A or B," "at least one of A and B," "or at least one of B," "A, B, or C," "at least one of A, B, and C," and "at least one of B or C" can each include any one of the items listed together in that phrase, or all possible combinations thereof. Terms such as "first," "second," or "first" or "second" may be used merely to distinguish the corresponding component from other corresponding components and do not limit the corresponding components in any other respect (e.g., importance or order). When a component (e.g., a first) is referred to as "coupled" or "connected" to another (e.g., a second) component, with or without the terms "functionally" or "communicatively," it means that the component can be connected to the other component directly (e.g., wired), wirelessly, or through a third component.

[0031] FIG. 1 is an exploded perspective view of a head mount device according to one embodiment of the present disclosure.

[0032] According to one embodiment, as illustrated in FIG. 1, the head mounted device (100) may provide at least one of a see-through function that provides augmented reality (AR) or a see-closed function that provides virtual reality (VR) through a display. The see-through function may be a function that provides an object or a virtual target or objects to the user using visual or various sensory means while transmitting actual external objects to the user's eyes through a display (not shown) or a transparent / translucent lens (not shown). According to this see-through function, additional information and / or images regarding objects that are actually visible may be provided to the user. In one embodiment, the see-through function may provide additional information to the user using a hologram without a display or lens. In one embodiment, the closed-loop feature is provided by a separate display, positioned in front of the user's eyes, allowing the user to view content (games, movies, streaming, and / or broadcasts) presented through the display. This can provide an immersive experience for the user by utilizing a separate screen.

[0033] According to one embodiment, as illustrated in FIG. 1, the head mounted device (100) may include a main body (110), a front case (120), a cover member (130), a rear band (140), a wire (150) for adjusting the length between the front case (120) and the rear band (140), and / or a dial unit (200). At least one of the above-described components may be omitted or at least one component may be added.

[0034] In one embodiment, referring to FIG. 1, the main body (110) may be a main body (111) of a head-mounted device (100). In one embodiment, the main body (110) may include a display that provides a virtual reality image to the user and / or a plurality of lenses positioned between the display and the user's eyes. In one embodiment, the plurality of lenses may be positioned to correspond to the user's two eyes.

[0035] In one embodiment, the main body (110) may include a main body (111) exposed to the outside of the head mounted device (100), a vent hole (115) formed in the main body (111), a face contact portion (112) worn on the user's face, a first bridge (113) connected to a first side portion (141) of a rear band (140), and a second bridge (114) connected to a second side portion (142) of the rear band (140).

[0036] In one embodiment, at least one of the display and lens of the head mounted device (100) may be located in the main body (111). Heat generated as the head mounted device (100) operates may be discharged from the inside of the head mounted device (100) to the outside through a vent hole (115) formed in the main body (111).

[0037] In one embodiment, the face contact portion (112) may be formed with at least a portion of a curved shape to correspond with the user's face. In one embodiment, the face contact portion (112) may have an outer shape that covers the user's eyes. In one embodiment, the face contact portion (112) may include a nose recess in the shape of a nose where the user's nose is positioned.

[0038] In one embodiment, referring to FIG. 1, the front case (120) may be a portion that comes into contact with the user's forehead. In one embodiment, the front case (120) may include a front cover (121) and cushion assemblies (122, 123). In one embodiment, the front cover (121) may be a cover that forms the exterior of the front case (120). In one embodiment, the cushion assemblies (122, 123) may be configured to be coupled with the front cover (121) and come into contact with the user's forehead. In one embodiment, the cushion assemblies (122, 123) may include a cushion portion (123) that comes into contact with the user's forehead (or face) and a support member (122) that supports the cushion portion (123). In one embodiment, the cushion portion (123) may be formed of an elastic material so as to provide a comfortable fit to the user. For example, the cushion portion (123) may be formed of a polyurethane material. In one embodiment, the support member (122) is configured to support the cushion portion (123), and thus may be formed of a metal or non-metal material having a certain level of rigidity.

[0039] In one embodiment, referring to FIG. 1, the head mounted device (100) may include a dial unit (200). In one embodiment, the dial unit (200) may be disposed in the front case (120). In one embodiment, at least a portion of the dial unit (200) may pass through a first opening (1211) formed in the front cover (121) and be disposed in a mounting groove (1221) formed in the support member (122). In one embodiment, the mounting groove (1221) of the support member (122) may be open in a first direction so that the dial unit (200) can move in a first direction (e.g., the first direction of FIG. 2A), as will be described later.

[0040] In one embodiment, a user can adjust the gap between the front case (120) and the rear band (140) by manipulating the dial unit (200). For example, referring to FIGS. 2A and 2B described below, the user can rotate the dial unit (200) clockwise or counterclockwise with respect to the front case (120) to wind or unwind the wire (150) connected to the rear band (140) around the winding portion (224) of the dial unit (200) (e.g., the winding portion (224) of the first wheel structure (220) of FIG. 4C). Accordingly, the gap between the front case (120) and the rear band (140) can be adjusted to fit the user's head shape.

[0041] In one embodiment, the head-mounted device (100) may include a diopter adjustment function to compensate for low vision. Diopter refers to the refractive power of the lens and may be the inverse of the focal length. A low vision user can correct their vision by adjusting the diopter by moving the main body (110) on which the lens is positioned relative to the front case (120). In one embodiment, a user can move the main body (110) relative to the front case (120) by manipulating the dial unit (200). As described below, referring to FIG. 8C, when the dial unit (200) moves in a second direction (e.g., the second direction in FIG. 8C) with respect to the front case (120), such that the second fixed structure (e.g., the link member (180) in FIG. 8C or the protrusion (421) in FIG. 10A) is detached from the first fixed structure (e.g., the fixed portion (170) in FIG. 8C or the fixed plate (410) in FIG. 10A), the main body (110) may move in a third direction (e.g., the third direction in FIG. 2A) or a fourth direction (e.g., the fourth direction in FIG. 2A) with respect to the front case (120). In one embodiment, the third direction may be a direction in which the main body (110) moves forward with respect to the front case (120). In one embodiment, the fourth direction may be a direction in which the main body (110) moves backward with respect to the front case (120). The user can adjust the diopter by moving the main body (110) relative to the front case (120) to adjust the distance between the lens placed on the main body (110) and the user's eye.

[0042] In one embodiment, the dial unit (200) may be connected to a wire (150). In one embodiment, the wire (150) may be unwound or wound around a winding portion (224) of the dial unit (200) as one component of the dial unit (200) (e.g., the first wheel structure (220), the third wheel structure (240) of FIG. 4b) rotates clockwise or counterclockwise. For example, a user may rotate the third wheel structure (240) of FIG. 4c, which is located on the front cover (121), clockwise or counterclockwise to rotate the first wheel structure (220) linked to the third wheel structure (240) clockwise or counterclockwise. Accordingly, the wire (150) may be wound around or unwound around a winding portion (224) formed on the first wheel structure (220). The distance of the rear band (140) to the front case (120) can be changed depending on the degree to which the wire (150) is wound around the winding portion (224) of the dial unit (200).

[0043] In one embodiment, referring to FIG. 1, the main body (110) can be movably coupled with the front case (120). In one embodiment, the main body (110) can move relative to the front case (120) based on the sliding coupling of the first guide unit (310) and the second guide unit (320). In one embodiment, the first guide unit (310) may include a shaft (312) extending in one direction, and the second guide unit (320) may include a guide groove (322) inserted into the shaft (312). For example, a guide groove (322) formed in a portion of the second guide unit (320) (e.g., the second guide member (321)) may be inserted into the shaft (312) of the first guide unit (310). Accordingly, the first guide unit (310) and the second guide unit (320) can move along the extension direction of the shaft (312) (e.g., the third direction or the fourth direction). In one embodiment, the second guide unit (320) may include the shaft (312), and the first guide unit (310) may include a guide groove (322).

[0044] In one embodiment, the first guide unit (310) may be disposed in one of the main body (110) and the front case (120). The second guide unit (320) may be disposed in the other of the main body (110) and the front case (120). In one embodiment, referring to FIG. 1, the first guide unit (310) may be disposed in the main body (110). The second guide unit (320) may be disposed in the front case (120) and coupled to the shaft (312) of the first guide unit (310). Conversely, the first guide unit (310) may be disposed in the front case (120), and the second guide unit (320) may be disposed in the main body (110). In the following description, it is assumed that the first guide unit (310) is disposed in the main body (110) and the second guide unit (320) is disposed in the front case (120), as illustrated in FIG. 1. However, the following description may also be equally applied to an embodiment in which the first guide unit (310) is disposed in the front case (120) and the second guide unit (320) is disposed in the main body (110).

[0045] In one embodiment, referring to FIG. 1, the first guide unit (310) may be disposed on the support bracket (300) and may be disposed on the main body (110). In one embodiment, the support bracket (300) may be configured to connect the first guide unit (310) and the main body (110). In one embodiment, the first guide unit (310) may be positioned on the main body (110) as the support bracket (300) is disposed on a mounting groove (not shown) formed on the main body (110).

[0046] In one embodiment, the first guide unit (310) and the second guide unit (320) can be protected from external impact by being covered with a cover member (130). In one embodiment, the cover member (130) covers the first guide unit (310) and the second guide unit (320) and can be inserted into a second opening (1212) formed in the front cover (121). In one embodiment, at least a portion of the cover member (130) can be coupled with the first guide unit (310) and / or the support bracket (300). Accordingly, the cover member (130) can move with respect to the second guide unit (320) together with the first guide unit (310) when the first guide unit (310) and the second guide unit (320) move relative to each other in the third or fourth direction via the shaft (312) and can be inserted into or extracted from the second opening (1212).

[0047] FIGS. 2A and 2B are drawings showing movement of the main body relative to the front case in a state where the dial unit moves in a second direction relative to the front case and the fixing structures are released, according to one embodiment of the present disclosure.

[0048] According to one embodiment, as illustrated in FIGS. 2A and 2B, the main body (110) and the front case (120) can move linearly relative to each other in a third direction (e.g., the third direction in FIG. 2A) or a fourth direction (e.g., the fourth direction in FIG. 2A) opposite to the third direction via the first guide unit (310) and the second guide unit (320). In one embodiment, from the perspective of a user wearing the head mounted device (100), the front case (120) may be a fixed configuration, and the main body (110) may be a configuration that moves in the third direction and the fourth direction with respect to the front case (120). In the following description, from the perspective of the user, the front case (120) may be a fixed configuration, and the main body (110) may be a configuration that moves in the third direction or the fourth direction with respect to the front case (120).

[0049] According to one embodiment, as illustrated in FIGS. 2A and 2B, the cover member (130) may be inserted into or withdrawn from the second opening (1212) of the front cover (121) as the main body (110) moves in the third direction or the fourth direction with respect to the front case (120). For example, referring to FIG. 2A, when a user moves the main body (110) in the third direction with respect to the front case (120), the first guide unit (310) may move in the third direction with respect to the second guide unit (320). In this case, a portion of the cover member (130) inserted into the second opening (1212) of the front cover (121) may be withdrawn from the second opening (1212). Referring to FIG. 2B, when the user moves the main body (110) in the fourth direction with respect to the front case (120), the first guide unit (310) can move in the fourth direction with respect to the second guide unit (320). In this case, a part of the cover member (130) can be introduced into the second opening (1212) of the front cover (121).

[0050] In one embodiment, the main body (110) may be movable relative to the front case (120) depending on whether a first fixing structure (e.g., fixing member (170) of FIG. 8C or fixing plate (410) of FIG. 10A) and a second fixing structure (e.g., link member (180) of FIG. 8C or protrusion (421) of FIG. 10A) are engaged. In one embodiment, at least a portion of the first fixing structure may be positioned relative to the main body (110). The second fixing structure may be engaged with the first fixing structure based on movement of the dial unit (200) relative to the front case (120) in a first direction (e.g., the first direction of FIG. 2A). In one embodiment, the first fixed structure may include a fixed member (170) (e.g., fixed member (170) of FIG. 8A) and a fixed plate (410) (e.g., fixed plate (410) of FIG. 10A), which will be described later. In one embodiment, the second fixed structure may include a link member (180) (e.g., link member (180) of FIG. 8A) and a protrusion (e.g., protrusion (421) of FIG. 10A).

[0051] In one embodiment, when the dial unit (200) moves in the first direction with respect to the front case (120), the first fixed structure and the second fixed structure may be fastened. For example, referring to FIG. 9c described below, when the dial unit (200) moves in the first direction, the actuator (211) of the dial unit (200) may press the link member (180) located in the second guide unit (320). In one embodiment, the link member (180) may be inserted into the axis (A) of the second guide unit (320) (e.g., the axis (A) of the second guide member (321) of FIG. 8d) and may rotate. The link member (180) can be rotated clockwise with respect to FIG. 9c through the actuator (211) so that the stopper (181) of the link member (180) can be inserted into the fastening groove (171) of the fixing portion (170) located in the first guide unit (310). The first guide unit (310) can be restricted from moving in the third or fourth direction with respect to the second guide unit (320) as the stopper (181) of the link member (180) is fastened to the fastening groove (171) of the fixing portion (170). Accordingly, the main body (110) can be fixed in position with respect to the front case (120). Meanwhile, when the dial unit (200) moves in the first direction with respect to the front case (120), the engaging portion (215) of the dial unit (200) can be fastened to the fastening protrusion (160) located inside the front case (120). Accordingly, the dial unit (200) can be fixed to the front case (120). In addition, since the position of the dial unit (200) in contact with the link member (180) is fixed with respect to the front case (120) while the stopper (181) of the link member (180) is inserted into the fastening groove (171) of the fixing portion (170), the front case (120) can be fixed in position with respect to the main body (110).

[0052] In one embodiment, when the dial unit (200) moves in a second direction (e.g., the second direction of FIG. 2A) with respect to the front case (120), the second fixed structure can be detached from the first fixed structure. For example, referring to FIG. 8C, which will be described later, when the user moves the dial unit (200) in the second direction while the engaging portion (215) of the dial unit (200) is engaged with the engaging protrusion (160) located within the front case (120), the engaging portion (215) of the dial unit (200) can be detached from the engaging protrusion (160). The link member (180) can rotate counterclockwise with respect to FIG. 8C as the dial unit (200) moves in the second direction. The stopper (181) of the link member (180) can be detached from the engaging groove (171) of the fixing portion (170) through the rotation of the link member (180). The first guide unit (310) can be switched to a state where it can move in the third or fourth direction with respect to the second guide unit (320) as the connection between the link member (180) and the fixing member (170) is released. Accordingly, the user can move the main body (110) in the third or fourth direction with respect to the front case (120) while the dial unit (200) is moved in the second direction. The user can adjust the diopter by adjusting the distance between the lens placed on the main body (110) and the user's eye by moving the main body (110) with respect to the front case (120). With the diopter optimally adjusted, the user can fix the position of the main body (110) with respect to the front case (120) by moving the dial unit (200) in the first direction.

[0053] According to one embodiment, as illustrated in FIGS. 2A and 2B , a user can adjust the gap between the front case (120) and the rear band (140) by manipulating the dial unit (200). For example, the user can rotate one component of the dial unit (200) (e.g., the first wheel structure (220), the third wheel structure (240)) clockwise or counterclockwise with respect to the front case (120) to wind or unwind the wire (150) connected to the rear band (140) around the winding portion (224) of the dial unit (200) (e.g., the winding portion (224) of FIG. 4C of the first wheel structure (220)). The distance of the rear band (140) relative to the front case (120) can be changed depending on the degree to which the wire (150) is wound around the winding portion (224) of the dial unit (200). For example, as the wire (150) is wound around the winding portion (224) of the dial unit (200), the gap between the rear band (140) and the front case (120) may become narrower. Conversely, as the wire (150) is unwound around the winding portion (224) of the dial unit (200), the gap between the rear band (140) and the front case (120) may become wider.

[0054] In one embodiment, the rear band (140) may have a first side portion (141) and a second side portion (142) that may be fastened to a first bridge (113) and a second bridge (114) of the main body (110). In one embodiment, the first side portion (141) may be slidably coupled to the first bridge (113). The second side portion (142) may be slidably coupled to the second bridge (114). Accordingly, the first side portion (141) and the second side portion (142) of the rear band (140) may slide and move relative to the first bridge (113) and the second bridge (114) of the main body (110) depending on the degree to which the wire (150) is wound around the winding portion (224) of the dial unit (200).

[0055] FIG. 3 is a drawing of a cushion portion divided and arranged on one side of a front case according to one embodiment of the present disclosure.

[0056] According to one embodiment, as illustrated in FIG. 3, in one embodiment, the cushion portion (123) may be configured with at least three cushion portions. In one embodiment, the cushion portion (123) may include a first cushion portion (1231), a second cushion portion (1232), and a third cushion portion (1233). In one embodiment, the second cushion portion (1232) and the third cushion portion (1233) may be positioned on both sides of the first cushion portion (1231). The plurality of cushion portions (123) may be brought into close contact with the user's forehead according to the user's head shape. Accordingly, the user may wear the head mounted device (100) more comfortably as the plurality of cushion portions (123) stably support the user's forehead.

[0057] FIG. 4A is a rear perspective view of a dial unit according to an embodiment of the present disclosure. FIG. 4B and FIG. 4C are exploded perspective views of the dial unit according to an embodiment of the present disclosure. FIG. 5A is a drawing illustrating a structural linkage relationship among a first wheel structure, a second wheel structure, and a third wheel structure according to an embodiment of the present disclosure. FIG. 5B is a drawing illustrating a structural linkage relationship among the first wheel structure and the third wheel structure according to an embodiment of the present disclosure.

[0058] According to one embodiment, as illustrated in FIGS. 4A, 4B, and 4C, the dial unit (200) may include a base member (210), a first wheel structure (220), a second wheel structure (230), a third wheel structure (240), a first button member (250), a second button member (260), and an elastic member (270). At least one of the above-described components may be omitted or another component may be added. In one embodiment, the dial unit (200) may be assembled in the following order: a base member (210), an elastic member (270), a first wheel structure (220), a second wheel structure (230), a second button member (260), a first wheel structure (220), and a first button member (250).

[0059] In one embodiment, the base member (210) may be a body (244) that supports the configuration of the dial unit (200). In one embodiment, referring to FIGS. 4A to 4C, the base member (210) may include an actuator (211) protruding in one direction, a separation prevention member (212), a first fastening member (213), a second fastening member (214), and a catch member (215).

[0060] In one embodiment, referring to FIG. 9c, which will be described later, the actuator (211) may be configured to be in contact with the link member (180). In one embodiment, referring to FIG. 10a, the actuator (420) may be formed such that at least a portion thereof is parallel to the fixed plate (410). In one embodiment, as the dial unit (200) moves in a third direction (e.g., the third direction of FIG. 2a) with respect to the front case (120), the link member (180) may rotate clockwise with respect to FIG. 9c via the actuator (211). For example, the stopper (181) of the link member (180) may be fastened to the fastening groove (171) of the fixed portion (170).

[0061] In one embodiment, referring to FIGS. 4A to 4C, the detachment prevention unit (212) may be configured such that an elastic member (270) is inserted between the base member (210) and the first wheel structure (220). The elastic member (270) may be inserted into the detachment prevention unit (212) to prevent or prevent detachment from the base member (210).

[0062] In one embodiment, referring to FIGS. 4A to 4C, the base member (210) may be coupled to a second wheel structure (230) via a first fastening portion (213) and a second fastening portion (214). For example, the second wheel structure (230) may include a first coupling portion (233) coupled to the first fastening portion (213) and a second coupling portion (234) coupled to the second fastening portion (214). In one embodiment, the first coupling portion (233) and the second coupling portion (234) of the second wheel structure (230) may be formed in a hook shape.

[0063] In one embodiment, the engaging portion (215) of the dial unit (200) may be configured to secure the dial unit (200) to the front case (120). For example, referring to FIG. 9C, which will be described later, when the dial unit (200) moves in a first direction (e.g., the first direction of FIG. 9C) with respect to the front case (120), the engaging portion (215) of the dial unit (200) may be engaged with a engaging protrusion (160) located inside the front case (120). Accordingly, the dial unit (200) may be secured to the front case (120).

[0064] In one embodiment, the engaging portion (215) of the dial unit (200) may include a sloped surface (216) inclined at a predetermined angle. For example, referring to FIGS. 8C and 9C described below, the sloped surface (216) of the engaging portion (215) may be formed in the form of an upward slope with respect to a second direction (e.g., the second direction of FIG. 8C). Accordingly, when the engaging portion (215) of the dial unit (200) is engaged with the engaging protrusion (160) located within the front case (120) and the user moves the dial unit (200) in the second direction, the engaging portion (215) of the dial unit (200) may be removed by sliding from the protrusion (160) via the sloped surface (216).

[0065] In one embodiment, referring to FIGS. 4A to 4C, the first wheel structure (220) may be disposed on the upper side of the base member (210). In one embodiment, the first wheel structure (220) may include a winding portion (224) around which a wire (150) is wound, a first gear (221) that engages with a second gear (232) of a second wheel structure (230), and a coupling groove (223) into which a rib (243) of the first wheel structure (220) is inserted.

[0066] In one embodiment, referring to FIGS. 4A to 4C, the second wheel structure (230) may be positioned at least partially on top of the first wheel structure (220). In one embodiment, the second wheel structure (230) may include an opening (231) in which a portion of the first wheel structure (220) is positioned. In one embodiment, the engaging groove (223) of the first wheel structure (220) may be positioned within the opening (231) of the second wheel structure (230). In one embodiment, the second gear (232) may be formed along the outer periphery of the opening (231).

[0067] In one embodiment, referring to FIGS. 4A to 4C, the third wheel structure (240) may be positioned at least partially on top of the second wheel structure (230). In one embodiment, the rib (243) of the third wheel structure (240) may pass through the opening (231) of the second wheel structure (230) and be fastened to the engaging groove (223) of the first wheel structure (220).

[0068] In one embodiment, referring to FIGS. 4A to 4C, a button member (e.g., a first button member (250), a second button member (260)) may be disposed on the third wheel structure (240). In one embodiment, the first button member (250) may be disposed on the third wheel structure (240). In one embodiment, the first button member (250) may be positioned in an opening (241) formed on an upper surface of the third wheel structure (240). In one embodiment, the second button member (260) may be disposed on a lower surface of the third wheel structure (240). In one embodiment, at least a portion of the second button member (260) may be positioned in the opening (231) of the second wheel structure (230). In one embodiment, the second button member (260) may be in contact with the first wheel structure (220) through the opening (231) of the second wheel structure (230). In one embodiment, the first button member (250) and the second button member (260) may be fixed via a fixing member (e.g., a screw (S)).

[0069] In one embodiment, the first button member (250) may include a protrusion (251) extending from one side. In one embodiment, the protrusion (251) may pass through a hole (242) located within the opening (241) of the third wheel structure (240) and come into contact with the second button member (260). In one embodiment, the fixing member (S) may pass through the second button member (260), the hole (242) located in the opening (241) of the third wheel structure (240), and the protrusion (251).

[0070] According to one embodiment, as illustrated in FIG. 5a, the first wheel structure (220), the second wheel structure (230), and the third wheel structure (240) may be structurally linked.

[0071] In one embodiment, the base member (210) and the second wheel structure (230) may be configured to be relatively fixed in position with respect to the first wheel structure (220) and the third wheel structure (240). In one embodiment, the first wheel structure (220) and the third wheel structure (240) may be relatively movable with respect to the base member (210) and / or the second wheel structure (230). In one embodiment, the third wheel structure (240) may be positioned outside the front case (120). A user may adjust the length between the rear band (140) and the front case (120) by rotating the third wheel structure (240) clockwise or counterclockwise with respect to the base member (210) and the second wheel structure (230). For example, when the third wheel structure (240) is rotated counterclockwise, the wire (150) may be wound around the winding portion (224) of the third wheel structure (240), so that the distance between the front case (120) and the rear band (140) may be reduced. In addition, when the third wheel structure (240) is rotated clockwise, the wire (150) may be unwound from the winding portion (224) of the third wheel structure (240), so that the distance between the front case (120) and the rear band (140) may be increased. For convenience of explanation, the following description will be made on the assumption that when the first rotating structure and the third rotating structure are rotated counterclockwise, the wire (150) is wound around the winding portion (224) of the first rotating structure, and when the first rotating structure and the third rotating structure are rotated clockwise, the wire (150) is unwound from the winding portion (224).

[0072] In one embodiment, referring to FIG. 5A, when the third wheel structure (240) rotates clockwise or counterclockwise with respect to the base member (210), the first wheel structure (220) may rotate in the same direction as the third wheel structure (240) and move downward with respect to the second wheel structure (230). For example, when the third wheel structure (240) rotates clockwise or counterclockwise, the rib (243) of the third wheel structure (240) may come into contact with an inclined surface (e.g., a second-first inclined surface (2231), a second-second inclined surface (2232)) located in the engaging groove (223). When the third wheel structure (240) rotates, the first wheel structure (220) can rotate in the same direction as the third wheel structure (240) as the rib (243) comes into contact with the inclined surface (e.g., the second-first inclined surface (2231), the second-second inclined surface (2232)) formed in the joining groove (223). Accordingly, the wire (150) can be wound or unwound on the winding part (224) as the first wheel structure (220) rotates in the same direction as the third wheel structure (240). Meanwhile, based on the rotation of the third wheel structure (240), the rib (243) can move along the inclined surface (2231, 2232) located in the joining groove (223) and be located on one surface (e.g., a flat surface) (222) of the first wheel structure (220) in which the joining groove (223) is formed. The first wheel structure (220) can move downward relative to the second wheel structure (230) as one side (222) is pressurized through the rib (243).

[0073] In one embodiment, referring to FIG. 5A, when the rib (243) of the third wheel structure (240) is inserted into the engaging groove (223) of the first wheel structure (220), the first gear (221) of the first wheel structure (220) and the second gear (232) of the second wheel structure (230) may be in a state of meshing with each other. The first wheel structure (220) may be in a fixed state when the first gear (221) and the second gear (232) are in a state of meshing. In one embodiment, when the third wheel structure (240) rotates clockwise or counterclockwise, one side (222) of the first wheel structure (220) may be pressed through the rib (243). The first wheel structure (220) can move away from the second wheel structure (230) as one side (222) is pressed through the rib (243). In this case, the elastic member (270) can be compressed through the first wheel structure (220) and the base member (210). The first gear (221) of the first wheel structure (220) can be separated from the second gear (232) based on the separation of the first wheel structure (220) in the direction away from the second wheel structure (230). Therefore, when the first wheel structure (220) rotates clockwise or counterclockwise with respect to the base member (210), the first gear (221) may not come into contact with the second gear (232). In one embodiment, the first wheel structure (220) can move toward the second wheel structure (230) through the elastic restoring force of the elastic member (270) as the rib (243) of the third wheel structure (240) is positioned in the engaging groove (223) of the first wheel structure (220). Accordingly, the first wheel structure (220) can be fixed through the second wheel structure (230) as the first gear (221) re-engages with the second gear (232) of the second wheel structure (230).

[0074] In one embodiment, the second button member (260) may be positioned at least partially in the opening (231) of the second wheel structure (230). In one embodiment, the second button member (260) may be brought into contact with the first wheel structure (220) at the opening (231) of the second wheel structure (230). In one embodiment, when a user presses the first button member (250), an external force applied by the user may be transmitted to the first wheel structure (220) through the protrusion (251) of the first button member (250) - the second button member (260). For example, when a user presses the first button member (250) toward the opening (241) of the first wheel structure (220), the first wheel structure (220) can be moved downward toward the second wheel structure (230) through an external force transmitted through the protrusion (251) of the first button member (250) - the second button member (260). In this case, the first gear (221) of the first wheel structure (220) and the second gear (232) of the second wheel structure (230) can be separated from each other. The user can widen the distance between the rear band (140) and the front case (120) without rotating the third wheel structure (240) while pressing the first button member (250). For example, when the user presses the first button member (250), the first gear (221) of the first wheel structure (220) and the second gear (232) of the second wheel structure (230) may be spaced apart. Accordingly, the first wheel structure (220) may be rotatable. When the user moves the rear band (140) in the fourth direction (e.g., the fourth direction of FIG. 2A) with respect to the back of the user's head to take off the head mounted device (100), the first wheel structure (220) may rotate clockwise or counterclockwise as the winding portion (224) connected to the wire (150) rotates clockwise or counterclockwise. As the wire (150) is released from the winding portion (224) of the first wheel structure (220), the distance between the rear band (140) and the front case (120) may increase.Accordingly, the user can easily remove the head mounted device (100) from the head by pressing the first button member (250) while the distance between the rear band (140) of the head mounted device (100) and the front case (120) is adjusted to fit the user's head shape, thereby widening the distance between the rear band (140) and the front case (120).

[0075] According to one embodiment, as illustrated in FIG. 5b, the rib (243) of the third wheel structure (240) may include a body (244), a first-first inclined surface (2451) and a first-second inclined surface (2452) formed to be inclined with respect to the body (244). In one embodiment, the first-first inclined surface (2451) and the first-second inclined surface (2452) may be formed with different inclinations, but are not limited thereto. For example, the first-first inclined surface (2451) and the first-second inclined surface (2452) may be formed with the same inclination with respect to the body (244).

[0076] In one embodiment, referring to FIG. 5b, the coupling groove (223) of the first wheel structure (220) may be formed in a shape corresponding to the rib (243). In one embodiment, the coupling groove (223) may include a second-first inclined surface (2231) corresponding to the first-first inclined surface (2451) of the rib (243) and a second-second inclined surface (2232) corresponding to the first-second inclined surface (2452) of the rib (243).

[0077] In one embodiment, referring to FIG. 5B, the first-first inclined surface (2451) may be formed with a lower slope than the first-second inclined surface (2452) with respect to the body (244). The first-first inclined surface (2451) may come into contact with the second-first inclined surface (2231) when the wire (150) rotates in a direction in which the wire (150) is wound around the first wheel structure (220) (e.g., counterclockwise). The first-second inclined surface (2452) may come into contact with the second-second inclined surface (2232) when the wire (150) rotates in a direction in which the wire (150) is unwound from the first wheel structure (220) (e.g., clockwise).

[0078] In one embodiment, referring to FIG. 5b, the first gear (221) of the first wheel structure (220) may include a third-first inclined surface (2211) and a third-second inclined surface (2212) formed to be inclined with respect to one side (222) of the first wheel structure (220). In one embodiment, the third-first inclined surface (2211) and the third-second inclined surface (2212) may be formed with different inclinations, but are not limited thereto. For example, the third-first inclined surface (2211) and the third-second inclined surface (2212) may be formed with the same inclination with respect to the one side (222). In one embodiment, referring to FIG. 5b, the third-first inclined surface (2211) may be formed with a lower inclination with respect to the one side (222) of the first wheel structure (220) than the third-second inclined surface (2212).

[0079] In one embodiment, referring to FIG. 5b, the inclined surface of the first gear (221) may be formed to be more inclined than the inclined surface of the rib (243). In one embodiment, the angle (θ) formed by the 3-1 inclined surface (2211) and one side (222) of the first wheel structure (220) may be greater than the angle (θ) formed by the 1-1 inclined surface (2451) and the body (244). In one embodiment, the angle formed by the 3-2 inclined surface (2212) and one side (222) of the first wheel structure (220) may be greater than the angle formed by the 1-2 inclined surface (2452) and the body (244). Therefore, when the rib (243) of the 3rd wheel structure (240) is positioned in the engaging groove (223) of the first wheel structure (220), the first gear (221) of the first wheel structure (220) and the second gear (232) of the second wheel structure (230) may maintain an engaged state.

[0080] In one embodiment of the present disclosure, the inclined surfaces (2211, 2212) of the first gear (221) may be formed to be more inclined than the inclined surfaces (2451, 2452) of the rib (243). In this case, when the first wheel structure (220) rotates clockwise or counterclockwise through the third wheel structure (240) while moving away from the second wheel structure (230), the first gear (221) and the second gear (232) may not engage each other. Accordingly, when the first wheel structure (220) rotates while engaging with the rib (243) of the third wheel structure (240), contact between the first gear (221) and the second gear (232) does not occur, so that the first wheel structure (220) can rotate with low noise or noiselessness.

[0081] FIGS. 6A, 6B, and 6C are diagrams illustrating a connection relationship between a wire and a first wheel structure according to one embodiment of the present disclosure. FIG. 7 is a diagram illustrating a state in which a dial unit and a rear band are connected via a wire according to one embodiment of the present disclosure.

[0082] According to one embodiment, as illustrated in FIGS. 6A, 6B, and 6C, the wire (150) may be connected to the winding portion (224) of the first wheel structure (220) in various forms. In one embodiment, the wire (150) needs to be fixed to both ends of the winding portion (224) so ​​that it can be wound or unwound on the winding portion (224) based on the rotation of the first wheel structure (220). In one embodiment, referring to FIG. 6A, one strand of the wire (150) may sequentially pass through a first gate (225) formed at one end of the winding portion (224) and a second gate (226) formed at the other end. In one embodiment, the gate may be a point at which the wire (150) is drawn out into the interior of the winding portion (224). In one embodiment, referring to FIG. 6b, the wire (150) may be connected to the first gate (225) and the second gate (226) of the winding portion (224) of the first wheel structure (220), respectively. In one embodiment, referring to FIG. 6c, the wire (150) may be fixed to one end of the winding portion (224) by passing through the gates (225, 226) formed at one end of the winding portion (224). In addition, the wire (150) may be fixed to one end of the winding portion (224) by passing through the gates (225, 226) formed at the other end of the winding portion (224).

[0083] According to one embodiment, as illustrated in FIG. 7, strands of a plurality of different wires (150) may intersect with each other at least one of the first side portion (141) and the second side portion (142). In one embodiment, a wire (150) extending from a first point (e.g., a first gate (225)) of the dial unit (200) may extend through the second side portion (142) - the upper path (143) and the lower path (144) of the rear band (140) - the first side portion (141) to a second point (e.g., a second gate (226)) of the dial unit (200). In one embodiment, strands of different wires (150) may intersect with each other at least one of the first side portion (141) and the second side portion (142). For example, a plurality of wire (150) strands extending from a first point of the dial unit (200) to a second side portion (142) may pass through an upper path (143) and a lower path (144) of the rear band (140), respectively. Thereafter, the plurality of wire (150) strands may cross each other at the second side portion (142). The crossed plurality of wire (150) strands may extend to a second point of the dial unit (200). As the plurality of wire (150) strands cross at the second side portion (142), when the first wheel structure (220) rotates in conjunction with the third wheel structure (240), the phenomenon of the plurality of wire (150) strands being twisted with each other may be prevented.

[0084] FIGS. 8A, 8B, 8C, and 8D are drawings showing movement of the main body relative to the front case in a state where the fixing structures are released as the dial unit moves in a second direction relative to the front case, according to one embodiment of the present disclosure. FIGS. 9A, 9B, 9C, and 9D are drawings showing a state where the first fixing structure and the second fixing structure are engaged as the dial unit moves in a first direction (e.g., the first direction of FIG. 8C), according to one embodiment of the present disclosure.

[0085] According to one embodiment, as illustrated in FIGS. 8A and 8B , the head mounted device (100) may include a first guide unit (310) and a second guide unit (320). In one embodiment, the first guide unit (310) and the second guide unit (320) may be movably coupled. For example, the first guide unit (310) and the second guide unit (320) may move in a third direction (e.g., the third direction of FIG. 2A ) or a fourth direction (e.g., the fourth direction of FIG. 2A ).

[0086] In one embodiment, referring to FIGS. 8A and 8B, the first guide unit (310) may include a first guide member (311) and a shaft (312). In one embodiment, the shaft (312) may be fixed to the first guide member (311). In one embodiment, at least a portion of the first guide unit (310) may be fixed to the main body (110). In one embodiment, the first guide member (311) may be directly coupled to the main body (110). In one embodiment, the first guide member (311) of the first guide unit (310) may be disposed on a support bracket (300). In one embodiment, the support bracket (300) may be fixed to the main body (110) by being disposed in a mounting groove (not shown) formed in the main body (110). Accordingly, the first guide member (311) may be fixed to the main body (110).

[0087] In one embodiment, referring to FIGS. 8A and 8B, the second guide unit (320) may include a second guide member (321) and a guide groove (322). In one embodiment, the second guide groove (322) may be formed in the second guide member (321) and may be formed to a size into which the shaft (312) may be inserted. In one embodiment, at least a portion of the second guide unit (320) may be fixed to the front case (120). For example, a portion of the second guide member (321) of the second guide unit (320) may be fixed to the front case (120).

[0088] In one embodiment, referring to FIGS. 8A and 8B, the first guide unit (310) (e.g., the first guide member (311)) and the second guide unit (320) (e.g., the second guide member (321)) may be slidably coupled in a third direction or a fourth direction. The main body (110) may move in the third direction or the fourth direction with respect to the front case (120) based on the slidably coupled first guide unit (310) and second guide unit (320). In one embodiment, from the perspective of a user wearing the head mounted device (100), the second guide unit (320) may be a fixed configuration, and the first guide unit (310) may be a configuration that moves in the third direction or the fourth direction with respect to the second guide unit (320). Therefore, from the perspective of a user wearing a head mounted device (100), the front case (120) may be a fixed configuration, and the main body (110) may be a configuration that moves in a third or fourth direction with respect to the front case (120).

[0089] In one embodiment, the user can adjust the diopter by moving the main body (110) relative to the front case (120) to adjust the distance between the lens placed on the main body (110) and the user's eye. In one embodiment, the front case (120) may be a fixed configuration from the user's perspective since it is a configuration that supports the user's forehead. Therefore, even if the main body (110) is moved relative to the front case (120) for diopter adjustment, the distance between the front case (120) and the rear band (140), which is adjusted to fit the user's head shape, may not change. According to one embodiment of the present disclosure, the distance between the rear band (140) and the front case (120) can be adjusted to fit the user's head shape through one dial unit (200), and the diopter can be adjusted by moving the main body (110) relative to the front case (120).

[0090] According to one embodiment, as illustrated in FIGS. 8A to 8D, the head mounted device (100) may include a first fixed structure (e.g., a fixed portion (170)) and a second fixed structure (e.g., a link member (180)). In one embodiment, the main body (110) may be movable with respect to the front case (120) depending on whether the first fixed structure and the second fixed structure are fastened. In one embodiment, when the first fixed structure and the second fixed structure are fastened, the main body (110) may be restricted from moving in a third direction or a fourth direction with respect to the front case (120). In summary, the main body (110) may be fixed in position with respect to the front case (120). Conversely, when the first fixed structure and the second fixed structure are released, the main body (110) may move in the third direction or the fourth direction with respect to the front case (120).

[0091] In one embodiment, referring to FIGS. 8A to 8D, the first fixed structure may be a fixed portion (170) positioned on the main body (110) and having a plurality of fastening grooves (171) formed therein. In one embodiment, the plurality of fastening grooves (171) may be arranged along the extending direction of the shaft (312) of the first guide unit (310). In one embodiment, the fixed portion (170) may be coupled to the support bracket (300) and / or the first guide member (311). In one embodiment, the second fixed structure may be a link member (180). In one embodiment, the link member (180) may include a stopper (181) inserted into the fastening groove (171) of the fixed portion (170). In one embodiment, the link member (180) may be inserted into an axis (A) formed on the second guide member (321) and rotatably coupled to the second guide member (321). In one embodiment, a compression member (TS) (e.g., a torsion spring) may be inserted into the axis (A) of the second guide member (321). In one embodiment, referring to FIG. 8d, one end of the compression member (TS) may be in contact with the second guide member (321) and the other end may be in contact with the link member (180). The compression member (TS) may be compressed when the stopper (181) of the link member (180) rotates toward the fastening groove (171) of the fixed portion (170). For example, as shown in FIG. 9d described below, as the dial unit (200) moves in the first direction with respect to the front case (120), one end of the link member (180) is pressed against the actuator (211), so that the stopper (181) located at the other end of the link member (180) may rotate toward the fastening groove (171) of the fixed portion (170). The compression member (TS) can be compressed as the stopper (181) rotates toward the fixed portion (170). Thereafter, as the dial unit (200) moves in a second direction (e.g., the second direction of FIG. 8c) with respect to the front case (120), the link member (180) can rotate and return to its original position through the elastic restoring force of the compression member (TS).When the actuator (211) of the dial unit (200) moves in the second direction, the link member (180) can rotate counterclockwise with respect to FIG. 8c while in contact with the actuator (211) through elastic restoring force.

[0092] In one embodiment, referring to FIG. 9c described later, when the dial unit (200) moves in the first direction and the actuator (211) presses the link member (180) so that the stopper (181) is inserted into the fastening groove (171) of the fixing portion (170), the movement of the first guide member (311) with respect to the second guide member (321) can be restricted. For example, as the first guide member (311) is fixed with respect to the second guide member (321), the main body (110) can be fixed in position with respect to the front case (120). In one embodiment, referring to FIG. 8c, when the dial unit (200) moves in the second direction and the stopper (181) of the link member (180) is removed from the fastening groove (171) of the fixing portion (170), the first guide member (311) can move in the third or fourth direction with respect to the second guide member (321). Accordingly, when the first fixing structure and the second fixing structure are disengaged, the user can adjust the diopter by moving the main body (110) with respect to the front case (120) to adjust the distance between the lens disposed in the main body (110) and the user's eye.

[0093] In one embodiment, the dial unit (200) may be fixed to the front case (120) by the engaging portion (215) of the dial unit (200) engaging the engaging protrusion (160) located within the front case (120) when the stopper (181) of the link member (180) is inserted into the engaging groove (171) of the fixing member (170) while moving in a first direction with respect to the front case (120). Thereafter, when the dial unit (200) is moved in a second direction with respect to the front case (120) for diopter adjustment, the engaging portion (215) of the dial unit (200) may be detached from the engaging protrusion (160). The link member (180) may rotate counterclockwise with respect to FIG. 8C as the dial unit (200) moves in the second direction. Accordingly, the stopper (181) of the link member (180) can be removed from the fastening groove (171) of the fixing member (170). As the fastening between the link member (180) and the fixing member (170) is released, the main body (110) can be switched to a state where it can move in the third direction or the fourth direction with respect to the front case (120). The user can adjust the diopter by moving the main body (110) with respect to the front case (120) to adjust the distance between the lens placed on the main body (110) and the user's eye.

[0094] Referring to FIGS. 9A to 9D, a user may move the main body (110) relative to the front case (120) and then move the dial unit (200) in a first direction relative to the front case (120) to fix the position of the main body (110) relative to the front case (120). As the dial unit (200) moves in the first direction, the link member (180) may be pressed through the actuator (211) of the dial unit (200). In one embodiment, the link member (180) may be pressed through the actuator (211) of the dial unit (200) to rotate clockwise with respect to FIG. 9C. The stopper (181) of the link member (180) may be fastened to the fastening groove (171) of the fixing portion (170) based on the rotation of the link member (180). Meanwhile, as the dial unit (200) moves in the first direction with respect to the front case (120), the engaging portion (215) of the dial unit (200) can be engaged with the engaging protrusion (160). Therefore, the position of the dial unit (200) can be fixed with respect to the front case (120) in a state where the stopper (181) of the link member (180) is inserted into the engaging groove (171) of the fixing portion (170). When the stopper (181) is engaged with the engaging groove (171) of the fixing portion (170), the first guide unit (310) may not move in the third or fourth direction with respect to the second guide unit (320). Therefore, after the diopter adjustment, the position of the main body (110) with respect to the front case (120) can be fixed.

[0095] In one embodiment, referring to FIGS. 9A to 9D, the stopper (181) of the link member (180) may be fastened to any one of the plurality of fastening grooves (171) of the fixed portion (170) based on the degree of movement of the main body (110) with respect to the front case (120). For example, referring to FIG. 9A, when the main body (110) is moved to the maximum in the third direction with respect to the front case (120), the stopper (181) of the link member (180) may be inserted into the fastening groove (171) of the fixed portion (170) that is closest to the front case (120). In contrast, referring to FIG. 9b, when the main body (110) is moved to the maximum in the fourth direction with respect to the front case (120), the stopper (181) of the link member (180) can be inserted into the fastening groove (171) of the fixing portion (170) that is the furthest from the front case (120). As the dial unit (200) moves in the first direction with respect to the front case (120), the engaging portion (215) of the dial unit (200) can be fastened to the engaging protrusion (160). Therefore, the position of the dial unit (200) can be fixed to the front case (120) in a state where the stopper (181) of the link member (180) is inserted into the fastening groove (171) of the fixing portion (170). When the stopper (181) is fastened to the fastening groove (171) of the fixing member (170), the first guide unit (310) may not move in the third or fourth direction with respect to the second guide unit (320). Accordingly, the position of the main body (110) with respect to the front case (120) may be fixed.

[0096] FIG. 10A is a drawing showing a state in which the main body can move relative to the front case when the protrusion formed on the actuator of the dial unit is removed from the fastening groove of the fixed plate according to one embodiment of the present disclosure. FIG. 10B is a drawing showing a state in which the protrusion formed on the actuator of the dial unit is fastened to the fastening groove of the fixed plate according to one embodiment of the present disclosure.

[0097] According to one embodiment, as illustrated in FIG. 10A, the main body (110) may be movable relative to the front case (120) depending on whether a first fixing structure (e.g., fixing plate (410)) and a second fixing structure (e.g., protrusion (421)) are fastened. In one embodiment, the first fixing structure may be a fixing plate (410) located on the main body (110). In one embodiment, the fixing plate (410) may include at least one fastening groove (411). In one embodiment, the fastening groove (411) of the fixing plate (410) may be arranged along the extension direction of the shaft (312) of the first guide unit (310). In one embodiment, the second fixing structure may be a part of the dial unit (200). In one embodiment, the second fixing structure may be formed on the base member (210) of the dial unit (200). In one embodiment, the base member (210) of the dial unit (200) may include an actuator (420) (e.g., the actuator (211) of FIG. 4A) that is parallel to one surface of a fixed plate (410) in which a fastening groove (411) is formed. In one embodiment, the actuator (420) may include a protrusion (421). In one embodiment, the protrusion (421) may be inserted into the fastening groove (411) of the fixed plate (410) based on movement of the dial unit (200) in a first direction (e.g., the first direction of FIG. 10A) or a second direction (e.g., the second direction of FIG. 10A) relative to the front case (120).

[0098] In one embodiment, referring to FIGS. 10A and 10B, when the dial unit (200) moves in the first direction and the protrusion (421) of the actuator (420) is inserted into the fastening groove (411) of the fixed plate (410), the movement of the first guide member (311) with respect to the second guide member (321) may be restricted. For example, the main body (110) may be fixed in position with respect to the front case (120) as the first guide member (311) is fixed with respect to the second guide member (321). Referring to FIG. 10b, when the dial unit (200) moves in the second direction and the protrusion (421) of the actuator (420) is disengaged from the fastening groove (411) of the fixed plate (410), the first guide member (311) can move in a third direction (e.g., the third direction in FIG. 10a) or a fourth direction (e.g., the fourth direction in FIG. 10b) with respect to the second guide member (321). Accordingly, when the coupling between the fixed plate (410) and the protrusion (421) of the actuator (420) is released, the user can adjust the diopter by moving the main body (110) with respect to the front case (120) to adjust the distance between the lens placed on the main body (110) and the user's eye. The user can move the dial unit (200) with respect to the front case (120) in the first direction with the diopter optimally adjusted. As the dial unit (200) moves in the first direction, the protrusion (421) of the actuator (420) can be inserted into the fastening groove (411) of the fixed plate (410). Meanwhile, as the dial unit (200) moves in the first direction with respect to the front case (120), the engaging portion (215) of the dial unit (200) can be fastened to the fastening protrusion (160). Therefore, the position of the dial unit (200) can be fixed to the front case (120) in a state where the protrusion (421) of the actuator (420) is inserted into the fastening groove (411) of the fixed plate (410).When the protrusion (421) of the actuator (420) is fastened to the fastening groove (411) of the fixed plate (410), the first guide unit (310) may not move in the third or fourth direction with respect to the second guide unit (320). Therefore, after diopter adjustment, the position of the main body (110) with respect to the front case (120) may be fixed.

[0099] In one embodiment, after the user wears the head-mounted device (100), even if the second fixing structure is detached from the first fixing structure by moving the dial unit (200) in the second direction to adjust the diopter, the distance between the front case (120) and the rear band (140) does not change, so that the diopter can be adjusted while the wearing state is maintained.

[0100] In one embodiment, referring to FIGS. 10A and 10B, the protrusion (421) of the actuator (420) may be fastened to one of the plurality of fastening grooves (411) of the fixed plate (410) based on the degree of movement of the main body (110) with respect to the front case (120). For example, when the main body (110) is moved to the maximum in the third direction with respect to the front case (120), the protrusion (421) of the actuator (420) may be inserted into the fastening groove (411) of the fixed plate (410) that is closest to the front case (120). Conversely, when the main body (110) is moved to the maximum in the fourth direction with respect to the front case (120), the protrusion (421) of the actuator (420) can be inserted into the fastening groove (411) that is most distant from the front case (120) among the fastening grooves (411) of the fixed plate (410).

[0101] According to one embodiment disclosed in this document, diopter adjustment and the length of the rear band (140) with respect to the front case (120) can be adjusted through one dial unit (200). According to one embodiment, in a state where the length of the rear band (140) with respect to the front case (120) is adjusted through the dial unit (200), even if the main body (110) is moved with respect to the front case (120) while the dial unit (200) is moved in a second direction with respect to the front case (120) for diopter adjustment, the distance between the front case (120) and the rear band (140) may not change. Therefore, the user can stably wear the head mounted device (100) during the diopter adjustment process.

[0102] Additionally, according to one embodiment of the present disclosure, the cushion portion (123) of the front case (120) may be composed of a plurality of parts. For example, the cushion portion (123) may include a first cushion portion (1231) positioned at the center of the user's forehead, a second cushion portion (1232) and a third cushion portion (1233) positioned on both sides of the first cushion portion (1231). The plurality of cushion portions (123) may organically move according to the user's head shape. Accordingly, the user may wear the head mounted device (100) more comfortably.

[0103] According to one embodiment of the present disclosure, a head mounted device (100) includes a main body (110), a front case (120) movably coupled with the main body, a dial unit (200) disposed on the front case, a first fixed structure disposed on the main body (e.g., a fixed portion (170) of FIG. 8A, a fixed plate (410) of FIG. 10A), a second fixed structure (e.g., a stopper (181) of FIG. 8C, a protrusion (421) of FIG. 10A) fastened to the first fixed structure based on movement of the dial unit in a first direction and detached from the first fixed structure based on movement of the dial unit in a second direction), a wire (150) wound around the dial unit, and a rear band (140) connected to the wire and moving relative to the front case based on rotation of the dial unit, wherein the main body rotates relative to the front case in a third direction and a fourth direction in a state in which the second fixed structure is detached from the first fixed structure. It can move in any one of the fourth directions, which is the opposite direction to the third direction.

[0104] In addition, the dial unit may further include a catch (160) formed on the front case and facing the dial unit, and the dial unit may include a catch (215) that is fastened to the catch as it moves in the first direction with respect to the front case and is detached from the catch as it moves in the second direction with respect to the front case.

[0105] Additionally, the above-mentioned catch portion may include an inclined surface (216) whose surface in contact with the catch jaw is inclined at a predetermined angle.

[0106] In addition, it may further include a first guide unit (310) at least part of which is fixed to the main body and a second guide unit (320) at least part of which is fixed to the front case and movably coupled to the first guide unit.

[0107] In addition, the device may further include a shaft (312) that guides movement of the first guide unit relative to the second guide unit, and is disposed in one of the first guide unit and the second guide unit, and a guide groove (322) that is inserted into the shaft and formed in the other of the first guide unit and the second guide unit.

[0108] In addition, the first fixed structure includes at least one fastening groove (171), a fixed portion (170) disposed on the first guide unit, the second fixed structure includes a link member (180) disposed on the second guide unit, contacts an actuator (211) formed on the dial unit to rotate with respect to the front case, and includes a stopper (181) fastened to the groove, and the link member is pressed through the actuator based on movement of the dial unit in the first direction so that the stopper is fastened to the groove of the fixed portion, and the stopper can be removed from the groove of the fixed portion based on movement of the dial unit in the second direction.

[0109] In addition, the first fixed structure includes a fixed plate (410) disposed on the main body and including at least one fastening groove, and the second fixed structure includes a protrusion (421) formed on the dial unit and inserted into the fastening groove, and the protrusion is inserted into the fastening groove of the fixed plate based on movement of the dial unit in the first direction and can be removed from the fastening groove of the fixed plate based on movement of the dial unit in the second direction.

[0110] In addition, the dial unit may include an actuator (420) that is parallel to one surface of the fixed plate in which the fastening groove is formed and in which the protrusion is formed.

[0111] In addition, the dial unit includes a base member (210), a first wheel structure (220) positioned on an upper end of the base member and including a first gear (221) and a coupling groove (223), an elastic member (270) disposed between the base member and the first wheel structure, a second wheel structure (230) fastened to the base member and including a second gear (232) meshed with the first gear, and a third wheel structure (240) disposed on an upper end of the second wheel structure and including a rib (243) corresponding to the coupling groove, wherein the first gear of the first wheel structure is meshed with the second gear of the second wheel structure in a state where the rib of the third wheel structure is inserted into the coupling groove, and when one surface (222) of the first wheel structure is pressed through the rib based on rotation of the third wheel structure, the first gear can be separated from the second gear.

[0112] Additionally, the second wheel structure may include an opening (231) in which a portion of the first wheel structure is positioned, and the second gear of the second wheel structure may be formed along the outer periphery of the opening.

[0113] In addition, the dial unit may include a first button member (250) including a protrusion (251) passing through a hole (242) formed in the third wheel structure, and a second button member (260) facing the protrusion, positioned in the opening of the second wheel structure, and in contact with the first wheel structure.

[0114] In addition, the rib of the third wheel structure may include a body (244), a first-first inclined surface (2451) and a first-second inclined surface (2452) formed with different inclinations with respect to the body, and the coupling groove of the first wheel structure may include a second-first inclined surface (2231) that contacts the first-first inclined surface of the rib and a second-second inclined surface (2232) that contacts the first-second inclined surface.

[0115] In addition, the first gear of the first wheel structure may include a 3-1 inclined surface (2211) formed with different inclinations with respect to one surface of the first wheel structure and formed with a higher inclination than the 1-1 inclined surface, and a 3-2 inclined surface (2212) formed with a higher inclination than the 1-2 inclined surface, and the second gear of the second wheel structure may include a 4-1 inclined surface that engages with the 3-1 inclined surface and a 4-2 inclined surface that engages with the 3-2 inclined surface.

[0116] Additionally, the first wheel structure may include a winding portion (224) around which the wire is wound.

[0117] Additionally, the winding portion may include a pair of gates (225, 226) that connect the inside and the outside and through which the wire passes.

[0118] In addition, the rear band may include a first side portion (141) coupled to the main body, a second side portion (142), an upper path (143) in which the wire is arranged, and a lower path (144) in which the wire is arranged.

[0119] Additionally, the wire extends from the first side portion through the upper path to the second side portion, and extends from the first side portion through the lower path to the second side portion, and the wire may cross at either of the first side portion and the second side portion.

[0120] Additionally, the front case may include a cushion portion (1231, 1232, 1233) that comes into contact with the user's face and is divided into at least three areas.

[0121] According to one embodiment of the present disclosure, the fastening structure of the main body (110) and the front case (120) comprises: a dial unit (200) disposed in the front case and including a hooking portion (215); a hooking protrusion (160) disposed in the front case and fastened to the hooking portion as the dial unit moves in a first direction with respect to the front case and separated from the hooking portion as the dial unit moves in a second direction with respect to the front case; a first fixing structure (170, 410) disposed in the main body (e.g., the fixing portion (170) of FIG. 8a, the fixing plate (410) of FIG. 10a); and a second fixing structure (180, 421) (e.g., the stopper (181) of FIG. 8c, the fixing plate (410) of FIG. 10a) which is fastened to the first fixing structure based on the movement of the dial unit in the first direction and detached from the first fixing structure based on the movement of the dial unit in the second direction. It may include a protrusion (421).

[0122] In addition, it may further include a first guide unit (310) at least part of which is fixed to the main body, a second guide unit (320) at least part of which is fixed to the front case and movably coupled to the first guide unit, a shaft (312) that guides movement of the first guide unit with respect to the second guide unit and is disposed in one of the first guide unit and the second guide unit, and a guide groove (322) that is inserted into the shaft and is disposed in the other of the first guide unit and the second guide unit.

[0123] The various embodiments of this document and the terminology used therein are not intended to limit the technical features described in this document to specific embodiments, but should be understood to include various modifications, equivalents, or substitutes of the embodiments. In connection with the description of the drawings, similar reference numerals may be used for similar or related components. The singular form of a noun corresponding to an item may include one or more of the items, unless the context clearly indicates otherwise. In this document, each of the phrases "A or B", "at least one of A and B", "at least one of A or B", "A, B, or C", "at least one of A, B, and C", and "at least one of A, B, or C" can include any one of the items listed together in the corresponding phrase among those phrases, or all possible combinations thereof. Terms such as "first," "second," or "first" or "second" may be used merely to distinguish one component from another, and do not limit the components in any other respect (e.g., importance or order). When a component (e.g., a first component) is referred to as "coupled" or "connected" to another component (e.g., a second component), with or without the terms "functionally" or "communicatively," it means that the component can be connected to the other component directly (e.g., wired), wirelessly, or through a third component.

[0124] According to various embodiments, each component (e.g., a module or a program) of the above-described components may include one or more entities, and some of the entities may be separated and arranged in other components. According to various embodiments, one or more components or operations of the aforementioned components may be omitted, or one or more other components or operations may be added. Alternatively or additionally, a plurality of components (e.g., a module or a program) may be integrated into a single component. In such a case, the integrated component may perform one or more functions of each of the plurality of components identically or similarly to those performed by the corresponding component among the plurality of components prior to the integration. According to various embodiments, the operations performed by a module, program, or other component may be executed sequentially, in parallel, iteratively, or heuristically, or one or more of the operations may be executed in a different order, omitted, or one or more other operations may be added.

[0125] It will be appreciated that the present invention contemplates and encompasses embodiments based on any combination of two or more of the disclosed embodiments, as well as embodiments comprising any combination of the features disclosed herein. For example, the absence of an explicit indication that two features or two embodiments can be combined does not imply that such a combination is not envisioned, but rather that such a combination is intended to be included herein.

Claims

1. In a head mounted device (100), Main body (110); A front case (120) movably connected to the main body; A dial unit (200) placed in the above front case; A first fixed structure (170, 410) arranged on the above main body; A second fixed structure (180, 421) which is fastened to the first fixed structure based on movement of the dial unit in the first direction and detached from the first fixed structure based on movement of the dial unit in the second direction; A wire (150) wound around the above dial unit; and A rear band (140) connected to the above wire and moving relative to the front case based on the rotation of the dial unit; The above main body, A head mount device that moves in one of a third direction and a fourth direction opposite to the third direction with respect to the front case while the second fixed structure is detached from the first fixed structure.

2. In paragraph 1, It further includes a catch (160) formed on the front case and facing the dial unit; The above dial unit, A head mount device including a catch (215) that is engaged with the catch as it moves in the first direction relative to the front case and is detached from the catch as it moves in the second direction relative to the front case.

3. In paragraph 2, The above-mentioned catch A head mounted device including a sloped surface (216) having one surface that comes into contact with the above-mentioned catch plate and is inclined at a predetermined angle.

4. In paragraph 1, A first guide unit (310) at least part of which is fixed to the main body; and A head mounted device further comprising a second guide unit (320) at least partly fixed to the front case and movably coupled with the first guide unit.

5. In paragraph 4, A shaft (312) that guides the movement of the first guide unit relative to the second guide unit and is arranged on one of the first guide unit and the second guide unit; and A head mount device further comprising a guide groove (322) inserted into the shaft and formed in the other one of the first guide unit and the second guide unit.

6. In paragraph 4, The above first fixed structure is, A fixing member (170) including at least one fastening groove (171) and arranged on the first guide unit; The above second fixed structure is, A link member (180) is disposed on the second guide unit, comes into contact with an actuator (211) formed on the dial unit, rotates with respect to the front case, and includes a stopper (181) that is fastened to the fastening groove; The above link absence is, Based on the movement of the dial unit in the first direction, the stopper is pressed through the actuator to be fastened to the fastening groove of the fixed part, A head mounted device in which the stopper is removed from the fastening groove of the fixing portion based on movement of the dial unit in the second direction.

7. In paragraph 1, The above first fixed structure is, A fixing plate (410) comprising at least one fastening groove and arranged on the main body, The above second fixed structure is, It includes a protrusion (421) formed on the above dial unit and inserted into the above fastening groove, The above protrusion is, The dial unit is inserted into the fastening groove of the fixed plate based on movement in the first direction, A head mount device in which the dial unit is removed from the fastening groove of the fixed plate based on movement in the second direction.

8. In paragraph 7, The above dial unit, A head mount device including an actuator (420) having the protrusion formed and parallel to one side of the fixed plate on which the above-mentioned fastening groove is formed, 9. In paragraph 1, The above dial unit, Absence of base (210), A first wheel structure (220) located on the upper part of the above base member and including a first gear (221) and a coupling groove (223), An elastic member (270) arranged between the base member and the first wheel structure; A second wheel structure (230) that is connected to the base member and includes a second gear (232) that meshes with the first gear, and A third wheel structure (240) is disposed on the upper side of the second wheel structure and includes a rib (243) corresponding to the joining groove, The above first wheel structure is, The first gear is engaged with the second gear of the second wheel structure while the rib of the third wheel structure is inserted into the above-mentioned joining groove, A head mount device in which the first gear is separated from the second gear as one side (222) of the first wheel structure is pressed through the rib based on the rotation of the third wheel structure.

10. In paragraph 9, The above second wheel structure is, Including an opening (231) in which a part of the first wheel structure is located, The second gear of the second wheel structure, A head mounted device formed along the outer periphery of the above opening.

11. In paragraph 10, The above dial unit, A first button member (250) including a protrusion (251) passing through a hole (242) formed in the third wheel structure, and A head mounted device comprising a second button member (260) facing the protrusion and positioned in the opening of the second wheel structure and in contact with the first wheel structure.

12. In paragraph 9, The rib of the third wheel structure is, It includes a body (244), a first-first inclined surface (2451) and a first-second inclined surface (2452) formed with different inclinations with respect to the body, The joining groove of the above first wheel structure is, A head mounted device including a 2-1 inclined surface (2231) in contact with the 1-1 inclined surface of the rib and a 2-2 inclined surface (2232) in contact with the 1-2 inclined surface.

13. In paragraph 12, The first gear of the above first wheel structure is, It includes a 3-1 inclined surface (2211) formed with different inclinations on one side of the first wheel structure and formed with a higher inclination than the 1-1 inclined surface, and a 3-2 inclined surface (2212) formed with a higher inclination than the 1-2 inclined surface. The second gear of the above second wheel structure is, A head mounted device comprising a 4-1 inclined surface interlocked with the 3-1 inclined surface and a 4-2 inclined surface interlocked with the 3-2 inclined surface.

14. In paragraph 9, The above first wheel structure is, The above wire includes a winding part (224), The above winding part, A head mounted device comprising a pair of gates (225, 226) connecting the inside and the outside and through which the wire passes.

15. In paragraph 14, The above rear band, It includes a first side part (141), a second side part (142) coupled to the main body, an upper path (143) in which the wire is arranged, and a lower path (144) in which the wire is arranged. The above wire, A head mounted device wherein the wire extends from the first side portion through the upper path to the second side portion, and extends from the first side portion through the lower path to the second side portion, and the wire intersects at one of the first side portion and the second side portion.

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