CN115356856B

CN115356856B - Head-mounted display device

Info

Publication number: CN115356856B
Application number: CN202211283854.6A
Authority: CN
Inventors: 高瑞莹; 范亮; 刘艳龙
Original assignee: Goertek Inc
Current assignee: Goertek Inc
Priority date: 2022-10-20
Filing date: 2022-10-20
Publication date: 2023-07-11
Anticipated expiration: 2042-10-20
Also published as: CN115356856A

Abstract

The invention discloses a head-mounted display device which comprises a main machine shell and a battery shell, wherein an installation position is arranged on the main machine shell, and a hooking groove is formed in the installation position. The battery shell is installed in the installation position, and be equipped with rotation fastener and unblock piece on the battery shell, rotate the fastener rotate install in the battery shell, the tip of rotation fastener is equipped with first pothook. The unlocking piece enables the rotating clamping piece to rotate, so that the locking state of the rotating clamping piece, in which the first clamping hook is hooked on the hooking groove, is converted into the unlocking state of the first clamping hook, in which the first clamping hook is separated from the hooking groove. The technical scheme of the invention can prolong the service time of the user and improve the product experience of the user.

Description

Head-mounted display device

Technical Field

The invention relates to the technical field of head-mounted display equipment, in particular to head-mounted display equipment.

Background

With the appearance and explosion of the metauniverse concept, the development of VR technology is pushed to climax, and VR products serving as VR technology carriers are layered like spring bamboo shoots after rain. Many VR products are currently being developed toward miniaturization, weight reduction and intellectualization. For the weight that lightens the VR product, improve user experience, the battery structure of most VR products all canceling on the market adopts external cable's mode to supply power for the VR product, perhaps reduces battery capacity for the user needs to charge for the VR product constantly, leads to user's live time to shorten, and the product experience feel and worsen.

Disclosure of Invention

The invention mainly aims to provide a head-mounted display device which aims to prolong the service time of a user and improve the product experience of the user.

To achieve the above object, a head-mounted display device according to the present invention includes:

the host shell is provided with a mounting position, and the mounting position is provided with a hooking groove;

the battery shell is arranged at the installation position, a rotating clamping piece and an unlocking piece are arranged on the battery shell, the rotating clamping piece is rotatably arranged on the battery shell, and a first clamping hook is arranged at the end part of the rotating clamping piece;

the unlocking piece enables the rotating clamping piece to rotate, so that the locking state of the rotating clamping piece, in which the first clamping hook is hooked on the hooking groove, is converted into the unlocking state of the first clamping hook, in which the first clamping hook is separated from the hooking groove.

Optionally, the unlocking piece slidable mounting in the battery case, the unlocking piece with be equipped with linkage structure between the rotation fastener, the unlocking piece orientation the first pothook slides, and through linkage structure, makes the rotation fastener by locking state changes into the unblock state.

Optionally, the linkage structure is including locating first direction convex part on the rotation fastener and locating the second direction convex part of release member, first direction convex part orientation one side of release member is equipped with first direction inclined plane, just the protruding height that establishes of first direction convex part is along being close to the direction grow setting of first pothook, the second direction convex part is followed first direction inclined plane is towards first pothook slides.

Optionally, a second hook is arranged at one end of the second guiding convex part, which is close to the first hook;

in the unlocking state, the second clamping hook is hooked on one end, close to the first clamping hook, of the first guide convex part.

Optionally, a third guiding convex part extending towards the first hook is arranged on the edge of the hooking groove, and the end part of the third guiding convex part opposite to the first hook is abutted to release the hooking of the second hook and the first guiding convex part.

Optionally, a first reset piece is arranged between the unlocking piece and the battery shell, so that the unlocking piece has a trend of being far away from the first clamping hook;

and a second reset piece is arranged between the rotating clamping piece and the battery shell, so that the rotating clamping piece has a tendency of rotating towards the locking state.

Optionally, be equipped with the installation cavity in the battery case, rotate the fastener with the unblock piece all install in the installation cavity, just first guide way has been seted up to the lateral wall in installation cavity, be equipped with unblock portion on the unblock piece, unblock portion wears to locate first guide way, and part protrusion in the battery case.

Optionally, a second guiding groove is formed in one of the bottom wall of the battery shell and the bottom wall of the mounting position, and a limiting convex part is arranged on the other one of the bottom wall of the battery shell and the bottom wall of the mounting position and is inserted into the second guiding groove.

Optionally, at least part of the main body housing is made of magnesium-lithium alloy.

Optionally, the opposite ends of the installation position are respectively provided with the hooking grooves, the opposite ends corresponding to the battery shell are respectively provided with the rotating clamping piece and the unlocking piece, and the unlocking piece drives the rotating clamping piece to rotate, so that the rotating clamping piece is converted into the unlocking state from the locking state.

According to the technical scheme, the mounting position is arranged on the main machine shell of the head-mounted display device, and the hooking groove is formed in the mounting position. The battery shell is installed on the installation position, and is equipped with rotation fastener and unblock piece on the battery shell, rotates the fastener and rotates to install in the battery shell, rotates the tip of fastener and is equipped with first pothook. The unlocking piece enables the rotating clamping piece to rotate, so that the locking state of the rotating clamping piece in the hooking groove through the first hook is converted into the unlocking state that the first hook is separated from the hooking groove. When in a locking state, the first clamping hook is hooked in the hooking groove, so that the battery is locked, the rotating clamping piece is rotatably installed on the battery shell, and the hooking and the releasing of the first clamping hook and the hooking groove are controlled through the rotation of the rotating clamping piece. When the battery is required to be detached from the head-mounted display device, an operator enables one end of the rotating clamping piece, which is provided with the first clamping hook, to deviate from the direction away from the hooking groove through the unlocking piece, so that the rotating clamping piece is converted into an unlocking state from a locking state. Through setting up rotation fastener and unblock piece make the battery detachable install on wear display device's host computer casing, when this wear display device electric quantity used up, direct change battery can continue to use, and need not to charge for this wear display device, practiced thrift wear display device's charge time to extension user's live time improves user's use experience.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a head mounted display device according to an embodiment of the present invention;

FIG. 2 is a schematic view illustrating an angle structure of a mating structure of the rotating clip and the unlocking member in the locked state of FIG. 1;

FIG. 3 is a schematic view of another angle structure of the engaging structure of the rotating clip and the unlocking member in the locked state of FIG. 1;

FIG. 4 is a schematic view illustrating an angle structure of a fitting structure of the rotating clip and the unlocking member in the unlocking state of FIG. 1;

FIG. 5 is a schematic view illustrating an angle structure of a fitting structure of the rotating clip and the unlocking member in the unlocking state of FIG. 1;

fig. 6 is a schematic structural diagram of fig. 1 when the second hook is disengaged from the first guiding protrusion.

Reference numerals illustrate:

reference numerals	Name of the name	Reference numerals	Name of the name
				10	Main unit shell	21	Rotary clamping piece
11	Mounting position	211	First clamping hook
				111	Hook-connecting groove	212	First guide projection
112	Third guide projection	213	First guiding inclined plane
				113	Second guide groove	214	Avoidance groove
114	First guide section	215	Second reset piece
				115	Second guide section	22	Unlocking piece
20	Battery case	221	Second guide projection
				201	First guide groove	222	Second clamping hook
202	Limiting convex part	223	First reset piece
				203	Gear convex part	224	Unlocking part

The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present invention, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout is meant to include three side-by-side schemes, for example, "a and/or B", including a scheme, or B scheme, or a scheme that is satisfied by both a and B. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.

The invention provides a head-mounted display device which can be used for devices needing to be charged, such as AR (augmented reality) glasses, VR (virtual reality) glasses, handles for assisting the VR glasses and the like.

In the embodiment of the invention, as shown in fig. 1 to 5, the head-mounted display device includes a main housing 10 and a battery housing 20, wherein a mounting position 11 is provided on the main housing 10, and a hooking slot 111 is provided on the mounting position 11. The battery housing 20 is mounted at the mounting position 11, the battery housing 20 is provided with a rotating clamping piece 21 and an unlocking piece 22, the rotating clamping piece 21 is rotatably mounted at the battery housing 20, and the end part of the rotating clamping piece 21 is provided with a first clamping hook 211. The unlocking piece 22 rotates the rotating clamping piece 21, so that the locking state of the rotating clamping piece 21 hooked by the first hook 211 in the hooking groove 111 is converted into the unlocking state that the first hook 211 is separated from the hooking groove 111.

Specifically, the battery assembly is disposed in the battery housing 20, that is, an installation space required by the rotation clamp 21 and the unlocking member 22 is reserved on the battery housing 20, so that the unlocking member 22 pushes the rotation clamp 21 to rotate, and the first hook 211 is hooked in the hooking groove 111, thereby locking the battery on the head-mounted display device. So that the battery charges the head mounted display device. The main body casing 10 is provided with a mounting position 11, and the mounting position 11 is generally a concave structure arranged on the main body casing 10, so that the battery casing 20 cannot protrude from the surface of the head-mounted display device, and the structural integrity of the head-mounted display device is improved. The hooking groove 111 is generally formed by a hooking portion provided on a side wall (main body case 10) of the mounting position 11 and facing the inside of the mounting position 11, and a through hole is formed in the hooking portion; the first hooks 211 may also be directly disposed at one end of the mounting location 11, and the two first hooks 211 are fastened to each other. In the locked state (refer to fig. 2 and 3), the first hook 211 is hooked to the hooking groove 111, so as to lock the battery, and the rotating clamping member 21 is rotatably mounted on the battery case 20, and the hooking and releasing of the first hook 211 and the hooking groove 111 are controlled by the rotation of the rotating clamping member 21. When the battery is required to be detached from the head-mounted display device, the operator releases the end of the rotation clip 21 having the first hook 211 in a direction away from the hooking groove 111 by the unlocking member 22, that is, the rotation clip 21 is converted from the locked state to the unlocked state (refer to fig. 4 and 5).

According to the technical scheme, the mounting position 11 is arranged on the main machine shell 10 of the head-mounted display device, and the hooking groove 111 is formed in the mounting position 11. The battery housing 20 is mounted on the mounting position 11, the battery housing 20 is provided with a rotating clamping piece 21 and an unlocking piece 22, the rotating clamping piece 21 is rotatably mounted on the battery housing 20, and the end part of the rotating clamping piece 21 is provided with a first clamping hook 211. The unlocking piece 22 rotates the rotating clamping piece 21, so that the locking state of the rotating clamping piece 21 hooked by the first hook 211 in the hooking groove 111 is converted into the unlocking state that the first hook 211 is separated from the hooking groove 111. In the locking state, the first hook 211 is hooked to the hooking groove 111, so as to lock the battery, and the rotating clamping member 21 is rotatably mounted on the battery housing 20, and the hooking and releasing of the first hook 211 and the hooking groove 111 are controlled by the rotation of the rotating clamping member 21. When the battery is required to be detached from the head-mounted display device, the operator releases the end of the rotating clip 21 having the first hook 211 away from the hooking groove 111 through the unlocking member 22, so that the rotating clip 21 is converted from the locked state to the unlocked state. Through setting up rotation fastener 21 and unblock piece 22 make the battery detachable install on wear display device, when this wear display device electric quantity used up, direct change battery can continue to use, and need not to charge for this wear display device, practiced thrift wear display device's charge time to extension user's live time improves user's use experience.

In an embodiment, the unlocking member 22 is slidably mounted on the battery housing 20, a linkage structure is disposed between the unlocking member 22 and the rotating clamping member 21, and the unlocking member 22 slides towards the first hook 211, and the rotating clamping member 21 is converted from the locking state to the unlocking state by the linkage structure. Specifically, the unlocking member 22 is slidably mounted on the battery housing 20, and the unlocking member 22 is pushed to the direction in which the first hook 211 is located, so that the unlocking member 22 pushes the rotating clamping member 21 to rotate through the linkage structure, and the first hook 211 on the rotating clamping member 21 is disengaged from the hook slot 111. Compared with the mode of pressing or rotating to convert the rotating clamping piece 21 from the locking state to the unlocking state, the sliding type unlocking mode is adopted in the scheme, so that the movement space perpendicular to the directions of the unlocking piece 22 and the rotating clamping piece 21 is saved, and the movement stability is improved.

Further, the linkage structure includes a first guiding protrusion 212 disposed on the rotating clip 21 and a second guiding protrusion 221 disposed on the unlocking member 22, wherein a first guiding inclined plane 213 is disposed on a side of the first guiding protrusion 212 facing the unlocking member 22, and a protruding height of the first guiding protrusion 212 is increased along a direction approaching the first hook 211, and the second guiding protrusion 221 slides along the first guiding inclined plane 213 toward the first hook 211. Specifically, since the first guiding inclined surface 213 is inclined, and the protruding height of the first guiding protrusion 212 is increased along the direction approaching the first hook 211, when the unlocking member 22 moves along the first guiding inclined surface 213 toward the direction approaching the first hook 211, the distance between the second guiding protrusion 221 and the rotating clamping member 21 is increased, that is, the rotating clamping member 21 is converted from the locked state to the unlocked state by rotation.

In another embodiment, the linkage structure includes a guide rack provided on the rotating clamping member 21 and a guide gear provided on the unlocking member 22, the guide rack is obliquely arranged, the protruding height of the guide rack is increased along the direction approaching the first clamping hook 211, and the guide rack is meshed with the guide gear for transmission. The unlocking member 22 is caused to slide, and the rotation card 21 is caused to be converted from the locked state to the unlocked state by the linkage structure.

Further, in an embodiment, the end of the second guiding protrusion 221 near the first hook 211 is provided with a second hook 222; in the unlocked state, the second hook 222 is hooked on one end of the first guiding protrusion 212 near the first hook 211. Specifically, the second hook 222 is hooked on one end of the first guiding protrusion 212 near the first hook 211, so as to fix the rotating fastener 21 in the unlocked state, and facilitate the disengagement of the rotating fastener 21.

Referring to fig. 5 in combination, in an embodiment, a third guiding protrusion 112 extending toward the first hook 211 is provided on an edge of the hooking groove 111, and an end portion of the third guiding protrusion 112 opposite to the first hook 211 abuts against the second hook 222 to release the hooking of the first guiding protrusion 212. Specifically, the side of the third guide protrusion 112 facing the first hook 211 is provided with a second guide slope, and the extension height of the third guide protrusion 112 is set to become larger in a direction away from the hooking groove 111. When the second hook 222 is hooked to the first guide protrusion 212, the battery housing 20 moves in a direction away from the mounting position 11, so that the second guide inclined surface on the third guide protrusion 112 pushes the rotating clamp 21 to rotate in a direction away from the hooking groove 111 through the first hook 211 until the end of the third guide protrusion 112 opposite to the first hook 211 abuts against, so that the first guide protrusion 212 is away from the second hook 222, and the second hook 222 is separated from the first guide protrusion 212, so that the linkage structure of the unlocking member 22 and the rotating clamp 21 is released.

In order to smoothly hook the first hook 211 to the hooking groove 111 in the locking state, the rotation clamping piece 21 is provided with the avoiding groove 214, so that the third guiding protrusion 112 is inserted into the avoiding groove 214 in the locking state, so that the rotation clamping piece 21 compresses the periphery of the hooking groove 111 to further lock the battery case 20.

In an embodiment, a first reset member 223 is disposed between the unlocking member 22 and the battery case 20, such that the unlocking member 22 has a tendency to move away from the first hook 211. Specifically, one end of the first restoring member 223 is connected to the unlocking member 22, and the other end is connected to the battery case 20, and the first restoring member 223 has elasticity such that the unlocking member 22 has a tendency to be away from the first hook 211. So that when the second hook 222 is separated from the first guiding protrusion 212, the first reset piece 223 pulls the unlocking piece 22 to reset.

The first restoring member 223 is an extension spring, and is simple in structure and convenient to install. Of course, in other embodiments, the first restoring member 223 may be made of elastic materials such as rubber blocks, rubber bands, etc.

In another embodiment, a second reset member 215 is provided between the rotation clamp 21 and the battery case 20, so that the rotation clamp 21 has a tendency to rotate toward the locked state. Specifically, the rotating clamping member 21 is rotatably mounted on the battery housing 20 through the rotating shaft, so that after the first clamping hook 211 is separated from the hooking groove 111, the second reset member 215 pushes the rotating clamping member 21 to return to the locking state. When the battery is installed again, the hooking groove 111 pushes the first hook 211 to move away from the hooking groove 111 until the first hook 211 is hooked on the hooking groove 111, and the hooking groove 111 is pressed under the action of the second reset piece 215, so that the battery case 20 is locked at the installation position 11.

The second restoring member 215 may be a torsion spring, where the torsion spring is installed on the rotating shaft, and one side of the torsion spring abuts against the rotating clamping member 21, and the other side abuts against the battery housing 20; the second restoring member 215 may be a compression spring, and if the second restoring member 215 is a compression spring, the compression spring is disposed in a direction of the rotating shaft approaching the first hook 211; if the second restoring element 215 is an extension spring, the extension spring is disposed in a direction of the rotating shaft away from the first hook 211. Of course, in other embodiments, the second restoring member 215 may be made of elastic materials such as rubber blocks, rubber bands, etc.

Referring to fig. 1 to 5 again, in an embodiment, a mounting cavity is provided in the battery housing 20, the rotating clamping member 21 and the unlocking member 22 are both installed in the mounting cavity, a first guiding groove 201 is provided on a side wall of the mounting cavity, an unlocking portion 224 is provided on the unlocking member 22, and the unlocking portion 224 penetrates through the first guiding groove 201 and partially protrudes out of the battery housing 20. Specifically, the rotation clamping piece 21 and the unlocking piece 22 are both installed in the installation cavity, so that the rotation clamping piece 21 and the unlocking piece 22 are hidden in the battery shell 20, and the integrity of the battery shell 20 is improved. The unlocking part 224 is arranged on one side of the unlocking piece 22, which is away from the second convex part, and the unlocking part 224 is arranged in the first guide groove 201 in a penetrating way and partially protrudes out of the battery shell 20, so that a user can conveniently stir the unlocking piece 22, and the first guide groove 201 is used for guiding the sliding of the unlocking piece 22.

To further limit the movement of the battery case 20, in one embodiment, a guiding groove is formed on one of the bottom wall of the battery case 20 and the bottom wall of the mounting position 11, and the other is provided with a limiting protrusion 202, and the limiting protrusion 202 is inserted into the guiding groove. Specifically, the hooking of the first hook 211 and the hooking groove 111 can perform preliminary limit on the battery housing 20, so as to further limit the movement of the battery housing 20, one of the bottom wall of the battery housing 20 and the bottom wall of the mounting position 11 is provided with a guide groove, the other is provided with a limit protrusion 202, i.e. the bottom wall of the battery housing 20 is provided with a guide groove, and the bottom wall of the mounting position 11 is provided with a limit protrusion 202; or a guide groove is arranged on the bottom wall of the mounting position 11, a limit convex part 202 is arranged on the bottom wall of the battery shell 20, and the limit convex part 202 is inserted into the guide groove. Thereby further limiting in the direction perpendicular to the unlocking piece 22 and further locking the battery on the head-mounted display device.

Further, the guide groove includes a first guide section 114 and a second guide section 115 which are communicated with each other, and the width of the first guide section 114 is larger than that of the second guide section 115, and the limit protrusion 202 is inserted into and slid into the second guide section 115 by the first guide section 114. Specifically, the first guide section 114 is disposed in a direction close to the hooking groove 111, and after the first guide section 114 is inserted, the limiting protrusion 202 moves in a direction close to the hooking groove 111, so that the limiting protrusion 202 slides into the second guide section 115, and the second guide section 115 clamps the limiting protrusion 202, thereby further locking the battery case 20. And the end of the first limit protrusion 202 is far away from the bottom wall of the battery housing 20 and the bottom wall of the mounting position 11, and is provided with a laterally protruding gear protrusion 203, so that the gear protrusion 203 further limits the direction far away from the bottom wall of the mounting position 11 to further limit the release of the battery housing 20.

In order to further lock the battery case 20, the opposite ends of the mounting position 11 are respectively provided with a hooking groove 111, the opposite ends of the battery case 20 are respectively provided with a rotating clamping piece 21 and an unlocking piece 22, and the unlocking piece 22 drives the rotating clamping piece 21 to rotate, so that the rotating clamping piece 21 is converted from a locking state to an unlocking state. Specifically, the opposite ends of the installation position 11 are respectively provided with a hooking groove 111, and the opposite ends of the battery housing 20 are respectively provided with a rotation clamping piece 21 and an unlocking piece 22, so that the opposite ends of the battery housing 20 can be hooked in the hooking grooves 111 through the first hooks 211, and the two ends of the battery housing 20 can be locked to the installation position 11.

In one embodiment, at least a portion of the main housing 10 is made of magnesium-lithium alloy. That is, the main body case 10 is partially or entirely supported by magnesium-lithium alloy, thereby further reducing the overall weight of the head-mounted display device and improving the product experience of the user.

The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the description of the present invention and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the invention.

Claims

1. A head-mounted display device, comprising:

the unlocking piece enables the rotating clamping piece to rotate, so that the locking state of the rotating clamping piece, in which the first clamping hook is hooked on the hooking groove, is converted into the unlocking state, in which the first clamping hook is separated from the hooking groove;

the unlocking piece is slidably mounted on the battery shell, a linkage structure is arranged between the unlocking piece and the rotating clamping piece, the unlocking piece slides towards the first clamping hook, and the rotating clamping piece is converted into the unlocking state from the locking state through the linkage structure;

the linkage structure comprises a first guide convex part arranged on the rotating clamping piece and a second guide convex part arranged on the unlocking piece, a first guide inclined surface is arranged on one side of the first guide convex part, which faces the unlocking piece, the convex height of the first guide convex part is increased along the direction close to the first clamping hook, and the second guide convex part slides along the first guide inclined surface to the first clamping hook;

a second clamping hook is arranged at one end, close to the first clamping hook, of the second guide convex part, and in the unlocking state, the second clamping hook is hooked at one end, close to the first clamping hook, of the first guide convex part;

and a third guide convex part extending towards the first clamping hook is arranged on the edge of the hooking groove, and the end part of the third guide convex part opposite to the first clamping hook is abutted to release the hooking of the second clamping hook and the first guide convex part.

2. The head-mounted display device of claim 1, wherein a first reset member is disposed between the unlocking member and the battery housing such that the unlocking member has a tendency to move away from the first hook;

3. The head-mounted display device according to claim 1, wherein an installation cavity is formed in the battery shell, the rotating clamping piece and the unlocking piece are both installed in the installation cavity, a first guide groove is formed in the side wall of the installation cavity, an unlocking part is arranged on the unlocking piece, and the unlocking part penetrates through the first guide groove and partially protrudes out of the battery shell.

4. The head-mounted display device according to claim 1, wherein a second guide groove is formed in one of the bottom wall of the battery case and the bottom wall of the mounting position, and a limit protrusion is formed in the other of the bottom wall of the battery case and the bottom wall of the mounting position, and the limit protrusion is inserted into the second guide groove.

5. The head-mounted display device of claim 1, wherein at least a portion of the host housing is made of a magnesium-lithium alloy.

6. The head-mounted display device according to any one of claims 1 to 5, wherein the hooking grooves are formed at opposite ends of the mounting position, the rotating clamping member and the unlocking member are disposed at opposite ends of the battery case, and the unlocking member drives the rotating clamping member to rotate, so that the rotating clamping member is converted from the locking state to the unlocking state.