Hinge structure and head-mounted display device

Abstract

The utility model discloses a hinge structure and head-mounted display device relates to intelligent wearing technical field, wherein, hinge structure includes first support, second support, clasp spring, pivot and locking structure, is equipped with the first rotation hole on the first support, is equipped with the second rotation hole on the second support, the clasp spring is installed in the second support, and is located between the first support and the second support, and is equipped with the through hole, the pivot passes the first rotation hole, the through hole and the second rotation hole in proper order to rotate and connect the first support and the second support, and the pivot is with the interference fit of through hole, to provide damping force when the first support rotates relative to the second support, locking structure is equipped between the first support and the pivot, and is used for limiting the circumferential rotation of pivot relative to the first support. The utility model provides technical scheme is favorable to the miniaturization of hinge structure.

Description

Technical Field

[0001] This utility model relates to the field of smart wearable technology, and in particular to a hinge structure and a head-mounted display device. Background Technology

[0002] The weight of a head-mounted display device is a key factor affecting user comfort. As the core structural component connecting the frame and temples, the hinge's lightweight and miniaturized design is crucial for controlling the overall weight and optimizing the internal space layout, while ensuring rotation functionality.

[0003] However, the current mainstream hinge structure usually provides damping force for the relative rotation of the front and rear supports through disc springs. However, this solution often occupies a large axial space, resulting in a small wire passage space and a very complex structure, which is not conducive to the miniaturization of the hinge structure. Utility Model Content

[0004] The main purpose of this invention is to propose a hinge structure and a head-mounted display device, which aims to facilitate the miniaturization of the hinge structure.

[0005] To achieve the above objectives, the hinge structure proposed in this utility model includes: A first bracket, wherein the first bracket is provided with a first rotating hole; The second bracket is provided with a second rotating hole; A retaining ring is mounted on the second bracket and located between the first bracket and the second bracket, and has a through hole; A rotating shaft, which passes sequentially through the first rotating hole, the through hole, and the second rotating hole to rotatably connect the first bracket and the second bracket, and the rotating shaft is interference-fitted with the through hole to provide damping force when the first bracket rotates relative to the second bracket; and A locking structure is provided between the first bracket and the rotating shaft, and is used to restrict the circumferential rotation of the rotating shaft relative to the first bracket.

[0006] In one embodiment, the rotating shaft includes a shaft end and a shaft rod connected to each other. The cross-section of the shaft end is non-circular. The first bracket is provided with a first mounting groove communicating with the first rotating hole. The locking structure includes the shaft end and the first mounting groove. The shape of the first mounting groove is adapted to the shaft end so that the shaft end is embedded in the first mounting groove to restrict the circumferential rotation of the rotating shaft relative to the first bracket.

[0007] In one embodiment, the cross-section of the shaft end is oblong; and / or The outer surface of the shaft end does not protrude beyond the plane where the opening of the first mounting groove is located.

[0008] In one embodiment, the end of the rotating shaft extending into the through hole is provided with an annular groove, and the retaining ring is engaged in the annular groove to restrict the axial movement of the rotating shaft.

[0009] In one embodiment, the retaining ring includes a spring body and a fixing part connected to each other. The fixing part protrudes relative to the spring body to be fixedly connected to the second bracket. The spring body is provided with the through hole.

[0010] In one embodiment, one of the fixing part and the second bracket is provided with a fixing hole, and the other is provided with a fixing post. The fixing post extends into the fixing hole to fix the snap ring to the second bracket; or The retaining ring and the second bracket are welded together; or The spring body is provided with a clearance opening that communicates with the through hole, and the clearance opening is disposed opposite to the fixing part.

[0011] In one embodiment, the hinge structure further includes a torsion spring disposed between the first bracket and the second bracket to provide a clamping force when the first bracket is everted relative to the second bracket.

[0012] In one embodiment, the torsion spring is configured as a double torsion spring.

[0013] In one embodiment, the double torsion spring includes two spring bodies, a connector connecting the two spring bodies, and two torsion arms disposed at the ends of the two spring bodies away from the connector. The second bracket has a first abutment portion and two second abutment portions on opposite sides. The connector abuts against the first abutment portion, and the two torsion arms abut against the two second abutment portions respectively. The first bracket has a pressure plate that contacts the connector and presses against the double torsion spring when the first bracket is flipped outward to provide an outward clamping force.

[0014] This utility model also proposes a head-mounted display device, which includes a frame, temples, and the hinge structure, wherein one of the frame and the temples is fixedly connected to the first bracket, and the other is fixedly connected to the second bracket.

[0015] The technical solution of this utility model incorporates a first bracket, a second bracket, a retaining spring, a rotating shaft, and a locking structure within a hinge structure. The first bracket has a first rotating hole, and the second bracket has a second rotating hole. The retaining spring is fixed to the second bracket and located between the first and second brackets, and has a through hole. The rotating shaft passes sequentially through the first rotating hole, the through hole, and the second rotating hole to rotatably connect the first and second brackets. The rotating shaft and the through hole are interference-fitted to provide damping force when the first bracket rotates relative to the second bracket. The locking structure is located between the first bracket and the rotating shaft and restricts the circumferential rotation of the rotating shaft relative to the first bracket. Compared to the prior art that uses a disc spring to provide damping force, this utility model utilizes the interference fit between the retaining spring and the rotating shaft to provide damping force, thereby reducing the axial space of the rotating shaft, facilitating the miniaturization of the hinge structure, and consequently, the miniaturization of the head-mounted display device. Simultaneously, the locking structure restricts the rotation of the retaining spring relative to the first bracket, thus ensuring the damping effect. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 A schematic diagram of an embodiment of the hinge structure provided by this utility model; Figure 2 An exploded structural diagram of an embodiment of the hinge structure; Figure 3 This is a partially exploded structural diagram of an embodiment of the snap ring and the second bracket in the hinge structure. Figure 4 for Figure 2 A schematic diagram of an embodiment of the second support in the middle from another perspective.

[0018] Explanation of icon numbers: 100. First bracket; 110. First rotating hole; 120. First mounting groove; 130. Pressure plate; 200, Second bracket; 210, Second rotating hole; 220, Fixing hole; 230, First abutting part; 240, Second abutting part; 300, Snap ring; 310, Through hole; 320, Spring body; 321, Clearance opening; 330, Fixing part; 331, Fixing post; 400, Rotating shaft; 410, Shaft end; 420, Shaft rod portion; 430, Annular groove; 500, Torsion spring; 510, Spring body; 520, Connecting piece; 530, Torsion arm.

[0019] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0021] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0022] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0023] The weight of a head-mounted display device is a key factor affecting user comfort. As the core structural component connecting the frame and temples, the hinge's lightweight and miniaturized design is crucial for controlling the overall weight and optimizing the internal space layout, while ensuring rotation functionality.

[0024] However, current mainstream hinge structures typically use disc springs to provide damping force for the relative rotation of the front and rear supports. This approach often occupies a large axial space, resulting in limited wiring clearance and a highly complex structure, which is detrimental to the miniaturization of hinge structures. Alternatively, the hinge structure locks the front and rear supports together with screws, providing damping through hard contact between the contact surfaces. However, this damping effect is lost once the friction surfaces wear down. Generally, the front and rear supports are non-replaceable structural components, leading to a very short lifespan for the hinge structure.

[0025] This utility model proposes a hinge structure.

[0026] Understandably, hinge structures can be used in various head-mounted display devices. To accommodate different head circumferences and facilitate storage, head-mounted displays typically feature a rotatable connection between the frame and temples, allowing the temples to be folded inwards, unfolded, or folded outwards. Specifically, when the head-mounted display is not worn and is stored away, the temples are folded inwards; when the head-mounted display is worn and the user's head circumference is small, the temples are unfolded; and when the head-mounted display is worn and the user's head circumference is large, the temples are folded outwards. The hinge structure is located between the frame and temples to achieve the rotatable connection between them, provide clamping force for the temples' folding outwards, and also provide damping force during unfolding.

[0027] Please see Figure 1 and Figure 2 In one embodiment of this utility model, the hinge structure includes a first bracket 100, a second bracket 200, a retaining ring 300, a rotating shaft 400, and a locking structure. The first bracket 100 is provided with a first rotating hole 110; the second bracket 200 is provided with a second rotating hole 210; the retaining ring 300 is installed on the second bracket 200 and located between the first bracket 100 and the second bracket 200, and is provided with a through hole 310; the rotating shaft 400 passes through the first rotating hole 110, the through hole 310, and the second rotating hole 210 in sequence to rotatably connect the first bracket 100 and the second bracket 200, and the rotating shaft 400 is interference-fitted with the through hole 310 to provide damping force when the first bracket 100 rotates relative to the second bracket 200; the locking structure is provided between the first bracket 100 and the rotating shaft 400 and is used to restrict the circumferential rotation of the rotating shaft 400 relative to the first bracket 100.

[0028] Understandably, one of the first bracket 100 and the second bracket 200 is connected to the temple of the glasses, and the other is connected to the frame. For ease of explanation, the following description will use the example of the first bracket 100 being connected to the temple, the second bracket 200 being connected to the frame, and the temple rotating relative to the frame. When the temple is in the extended state, the first bracket 100 and the second bracket 200 extend along the front-to-back direction of the head-mounted display device.

[0029] The first bracket 100 has a first rotating hole 110, and the second bracket 200 has a second rotating hole 210, with the first rotating hole 110 and the second rotating hole 210 corresponding to each other. In one embodiment, the axial direction of the first rotating hole 110 and the second rotating hole 210 is the vertical direction of the head-mounted display device. A retaining ring 300 is mounted on the second bracket 200, and the through hole 310 of the retaining ring 300 corresponds to the second rotating hole 210 of the second bracket 200. The retaining ring 300 is positioned on the side of the second bracket 200 closer to the first bracket 100. When the first bracket 100 and the second bracket 200 are connected, the rotating shaft 400 passes sequentially through the first rotating hole 110 on the first bracket 100, the through hole 310 on the retaining ring 300, and the second rotating hole 210 on the second bracket 200, thereby achieving a rotatable connection between the first bracket 100 and the second bracket 200.

[0030] Meanwhile, the interference fit between the pivot 400 and the through hole 310 of the retaining ring 300 provides damping force during the unfolding of the first bracket 100 relative to the second bracket 200, thus facilitating the smooth unfolding of the first bracket 100 relative to the second bracket 200, reducing wear on both brackets, and improving the user experience of the hinge structure. Compared to the disc spring setup in the prior art, this invention uses a retaining ring 300, thereby reducing the axial space occupied by the pivot 400 and facilitating the miniaturization of the hinge structure. Compared to the existing technology that uses hard contact between the first bracket 100 and the second bracket 200 to provide a damping effect, this utility model uses the interference fit between the snap ring 300 and the rotating shaft 400 to provide damping force. This makes it easy to replace the snap ring 300 and the rotating shaft 400 when they wear out, thereby improving the service life of the hinge structure and reducing the cost of using the hinge structure.

[0031] Understandably, the retaining ring 300 is fixed to the second bracket 200, and the first bracket 100 and the second bracket 200 are rotatably connected by a pivot 400. Simultaneously, the rotational friction between the retaining ring 300 and the pivot 400 provides damping force. That is, to ensure the damping effect, the pivot 400 needs to be able to rotate relative to the retaining ring 300 and the second bracket 200, but not relative to the first bracket 100. A locking structure is provided between the first bracket 100 and the pivot 400 to restrict the circumferential rotation of the pivot 400 relative to the first bracket 100. Thus, the locking structure prevents the pivot 400 from rotating relative to the first bracket 100 in its circumferential direction; it can only rotate with the rotation of the first bracket 100, thereby avoiding a reduction in damping effect and improving the user experience of the hinge structure.

[0032] The technical solution of this utility model is to set a first bracket 100, a second bracket 200, a retaining ring 300, a rotating shaft 400 and a locking structure in a hinge structure. The first bracket 100 is provided with a first rotating hole 110, and the second bracket 200 is provided with a second rotating hole 210. The retaining ring 300 is fixed to the second bracket 200 and located between the first bracket 100 and the second bracket 200, and is provided with a through hole 310. The rotating shaft 400 passes through the first rotating hole 110, the through hole 310 and the second rotating hole 210 in sequence to rotatably connect the first bracket 100 and the second bracket 200. The rotating shaft 400 is interference-fitted with the through hole 310 to provide damping force when the first bracket 100 rotates relative to the second bracket 200. The locking structure is provided between the first bracket 100 and the rotating shaft 400 and is used to restrict the circumferential rotation of the rotating shaft 400 relative to the first bracket 100. Thus, compared to the existing technology that uses disc springs to provide damping force, this invention utilizes the interference fit between the retaining spring 300 and the rotating shaft 400 to provide damping force. This helps reduce the axial space of the rotating shaft 400, facilitates the miniaturization of the hinge structure, and consequently, the miniaturization of the head-mounted display device. Simultaneously, the locking structure restricts the rotation of the retaining spring 300 relative to the first support 100, thereby ensuring the damping effect.

[0033] Please see Figure 1 and Figure 2 In an embodiment of this utility model, the rotating shaft 400 includes a shaft end 410 and a shaft rod 420 connected to each other. The cross-section of the shaft end 410 is non-circular. The first bracket 100 is provided with a first mounting groove 120 that communicates with the first rotating hole 110. The locking structure includes the shaft end 410 and the first mounting groove 120. The shape of the first mounting groove 120 is adapted to the shaft end 410 so that the shaft end 410 is embedded in the first mounting groove 120 to restrict the circumferential rotation of the rotating shaft 400 relative to the first bracket 100.

[0034] Understandably, the rotating shaft 400 includes a shaft end 410 and a shaft rod 420 connected together, wherein the shaft rod 420 is used to pass through the first rotating hole 110, the through hole 310, and the second rotating hole 210, and the shaft end 410 is located outside the first rotating hole 110. Generally, the outer diameter of the shaft end 410 is larger than the diameter of the first rotating hole 110 to prevent the rotating shaft 400 from excessively penetrating the first rotating hole 110, thereby preventing the connection between the first bracket 100 and the second bracket 200 from failing. In one embodiment, the cross-section of the shaft end 410 is non-circular, and the first bracket 100 is provided with a first mounting groove 120, which communicates with the first rotating hole 110. Furthermore, the shape of the first mounting groove 120 is adapted to the shape of the shaft end 410. That is, in the solution shown in the figure of this utility model, the locking structure includes a shaft end 410 and a first mounting groove 120. Thus, when the rotating shaft 400 is rotatably connected to the first bracket 100 and the second bracket 200, the shaft part 420 extends into the first rotating hole 110, the through hole 310 and the second rotating hole 210, and the shaft end 410 is embedded in the first mounting groove 120, thereby restricting the circumferential rotation of the rotating shaft 400 relative to the first bracket 100.

[0035] In this invention, the locking structure for limiting the circumferential rotation of the pivot 400 relative to the first bracket 100 is integrated with the pivot 400 itself, thereby avoiding the need for additional locking components, which is beneficial for simplifying and lightweighting the hinge structure.

[0036] Of course, in other embodiments, the locking structure may also include a protrusion on one of the shaft end 410 and the first bracket 100, and a groove on the other, such that the protrusion is embedded in the groove, thereby restricting the circumferential rotation of the shaft 400 relative to the first bracket 100.

[0037] Please see Figure 2 In this embodiment of the invention, the cross-section of the shaft end 410 is oblong. Of course, in other embodiments, the cross-section of the shaft end 410 may also be rectangular.

[0038] In this embodiment of the invention, the outer surface of the shaft end 410 does not protrude from the plane where the opening of the first mounting groove 120 is located. This improves the aesthetic appearance of the hinge structure. Furthermore, when connecting the hinge structure to the temple and frame, the absence of a protruding outer surface of the shaft end 410 from the plane where the opening of the first mounting groove 120 is located also facilitates the connection of the hinge structure. Compared to a protruding outer surface of the shaft end 410, this avoids connection interference.

[0039] Please see Figure 2In an embodiment of this utility model, the end of the rotating shaft 400 extending into the through hole 310 is provided with an annular groove 430, and the snap ring 300 is engaged in the annular groove 430 to restrict the axial movement of the rotating shaft 400.

[0040] Understandably, along the circumference of the rotating shaft 400, an annular groove 430 is provided at the end of the rotating shaft 400 extending into the through hole 310. When the rotating shaft 400 is connected to the first bracket 100, the retaining ring 300, and the second bracket 200, the retaining ring 300 is precisely engaged in the annular groove 430 of the rotating shaft 400. Thus, the cooperation between the annular groove 430 and the retaining ring 300 restricts the axial movement of the rotating shaft 400, thereby preventing the rotating shaft 400 from dislodging from the second rotating hole 210, the through hole 310, and the first rotating hole 110. This arrangement restricts both the circumferential rotation of the rotating shaft 400 relative to the first bracket 100 and the axial movement of the rotating shaft 400, ensuring the reliability of the rotating shaft 400 in use. Of course, in other embodiments, the axial movement of the rotating shaft 400 can also be restricted by welding the rotating shaft 400 to the first bracket 100.

[0041] In this invention, the structure for limiting the axial movement of the pivot 400 is integrated with the pivot 400 and the snap ring 300 themselves, thereby avoiding the need for additional locking components, which is beneficial to the simplification and weight reduction of the hinge structure.

[0042] Please see Figure 2 In an embodiment of this utility model, the retaining ring 300 includes a spring body 320 and a fixing part 330 connected to each other. The fixing part 330 protrudes from the spring body 320 to be fixedly connected to the second bracket 200. The spring body 320 is provided with a through hole 310.

[0043] Understandably, the retaining ring 300 includes a spring body 320 and a fixing portion 330 connected together, the fixing portion 330 being used for fixed connection with the second bracket 200. In one embodiment, the spring body 320 and the fixing portion 330 are an integral structure. The spring body 320 is generally circular in shape and has a through hole 310 for the rotating shaft 400 to pass through. The fixing portion 330 protrudes relative to the spring body 320, and in one embodiment, the shape of the fixing portion 330 is adapted to the shape of the second bracket 200. Here, the shape of the fixing portion 330 is not limited.

[0044] Please see Figure 2 and Figure 3In an embodiment of this utility model, one of the fixing part 330 and the second bracket 200 is provided with a fixing hole 220, and the other is provided with a fixing post 331. The fixing post 331 extends into the fixing hole 220 to fix the snap ring 300 to the second bracket 200. Thus, through the cooperation of the fixing post 331 and the fixing hole 220, the fixing part 330 and the second bracket 200 are fixedly connected, and the snap ring 300 and the second bracket 200 are also fixedly connected. In one embodiment, the snap ring 300 and the second bracket 200 are fixed by welding, that is, the fixing part 330 of the snap ring 300 is welded to the second bracket 200, thus also achieving a fixed connection between the snap ring 300 and the second bracket 200.

[0045] Please see Figure 2 and Figure 3 In an embodiment of this utility model, the spring body 320 is provided with a clearance opening 321 communicating with the through hole 310, and the clearance opening 321 is disposed opposite to the fixing part 330. It can be understood that the retaining ring 300 is provided with a clearance opening 321 communicating with the through hole 310 to facilitate the insertion of the rotating shaft 400 into the through hole 310. In one embodiment, the clearance opening 321 is disposed opposite to the fixing part 330 along the radial direction of the through hole 310, which is beneficial to the overall structural stability of the retaining ring 300.

[0046] Please see Figure 2 In an embodiment of this utility model, the hinge structure further includes a torsion spring 500, which is disposed between the first bracket 100 and the second bracket 200 to provide clamping force when the first bracket 100 is folded outward relative to the second bracket 200. It is understood that the first bracket 100 can be folded outward relative to the second bracket 200. To ensure the clamping force of the temple on the human head when the temple is folded outward, the hinge structure also includes a torsion spring 500. The torsion spring 500 is disposed between the first bracket 100 and the second bracket 200 and extends axially along the pivot 400, thus contributing to the structural compactness of the hinge structure in the temple length direction.

[0047] In this embodiment of the invention, the torsion spring 500 is configured as a double torsion spring 500. It is understood that the use of a double torsion spring 500 is beneficial to increasing the clamping force when the first bracket 100 is flipped outward, and to improving the application range of the hinge structure.

[0048] Please see Figure 2In an embodiment of this utility model, the double torsion spring 500 includes two spring bodies 510, a connector 520 connecting the two spring bodies 510, and two torsion arms 530 disposed at the ends of the two spring bodies 510 away from the connector 520. The second bracket 200 is provided with a first abutment portion 230 and two second abutment portions 240 on opposite sides. The connector 520 abuts against the first abutment portion 230, and the two torsion arms 530 abut against the two second abutment portions 240 respectively. The first bracket 100 is provided with a pressing plate 130, which contacts the connector 520 and presses against the double torsion spring 500 when the first bracket 100 is flipped outward to provide an outward clamping force.

[0049] Specifically, the double torsion spring 500 includes two spring bodies 510, a connector 520, and two torsion arms 530. The connector 520 connects the two spring bodies 510, and each of the two spring bodies 510 has a torsion arm 530 at its end away from the connector 520. Along the left-right direction of the head-mounted display device, the second bracket 200 has a first abutment portion 230 and two second abutment portions 240 on opposite sides, with the two second abutment portions 240 spaced apart. The first bracket 100 has a pressure plate 130, which extends along the length of the temple and is close to the second bracket 200.

[0050] When the double torsion spring 500 is installed on the first bracket 100 and the second bracket 200, the rotating shaft 400 passes through the first rotating hole 110, the through hole 310 and the second rotating hole 210, and then extends into the central hole of the spring body 510. The connecting piece 520 abuts against the first abutting part 230, and the two torsion arms 530 abut against the two second abutting parts 240 respectively. At the same time, the pressing plate 130 contacts the connecting piece 520. When the first bracket 100 is flipped outward relative to the second bracket 200, as the first bracket 100 is flipped outward, the pressing plate 130 presses against the double torsion spring 500, causing the double torsion spring 500 to undergo elastic deformation, thereby providing deformation force. This causes the first bracket 100 to have a tendency to flip inward. That is, the double torsion spring 500 provides clamping force when the first bracket 100 is flipped outward, so as to prevent the temple from coming loose from the head.

[0051] In one embodiment, the first abutting portion 230 is configured as a first abutting groove, the shape of which is adapted to the connector 520; the second abutting portion 240 is configured as a second abutting groove, the shape of which is adapted to the torsion arm 530; and the pressing plate 130 is configured as an arc-shaped plate to be adapted to the structure of the double torsion spring 500.

[0052] This utility model also proposes a head-mounted display device, which includes a frame, temples, and a hinge structure. The specific structure of the hinge structure is as described in the above embodiments. Since this head-mounted display device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, and will not be described in detail here. One of the frame and temples is fixedly connected to the first support 100, and the other is fixedly connected to the second support 200.

[0053] The above description is merely an exemplary embodiment of the present utility model and does not limit the scope of protection of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present utility model.

Claims

1. A hinge structure, characterized in that, include: A first bracket, wherein the first bracket is provided with a first rotating hole; The second bracket is provided with a second rotating hole; A retaining ring is mounted on the second bracket and located between the first bracket and the second bracket, and has a through hole; A rotating shaft passes sequentially through the first rotating hole, the through hole, and the second rotating hole to rotatably connect the first bracket and the second bracket, and the rotating shaft is interference-fitted with the through hole to provide damping force when the first bracket rotates relative to the second bracket; as well as A locking structure is provided between the first bracket and the rotating shaft, and is used to restrict the circumferential rotation of the rotating shaft relative to the first bracket.

2. The hinge structure as described in claim 1, characterized in that, The rotating shaft includes a shaft end and a shaft rod connected to each other. The cross-section of the shaft end is non-circular. The first bracket is provided with a first mounting groove that communicates with the first rotating hole. The locking structure includes the shaft end and the first mounting groove. The shape of the first mounting groove is adapted to the shaft end so that the shaft end is embedded in the first mounting groove to restrict the circumferential rotation of the rotating shaft relative to the first bracket.

3. The hinge structure as described in claim 2, characterized in that, The cross-section of the shaft end is oblong; and / or The outer surface of the shaft end does not protrude beyond the plane where the opening of the first mounting groove is located.

4. The hinge structure as described in claim 1, characterized in that, The end of the rotating shaft extending into the through hole is provided with an annular groove, and the retaining ring is engaged in the annular groove to restrict the axial movement of the rotating shaft.

5. The hinge structure as described in claim 1, characterized in that, The retaining ring includes a spring body and a fixing part connected to each other. The fixing part protrudes relative to the spring body to be fixedly connected to the second bracket. The spring body is provided with the through hole.

6. The hinge structure as described in claim 5, characterized in that, One of the fixing part and the second bracket is provided with a fixing hole, and the other is provided with a fixing post. The fixing post extends into the fixing hole to fix the snap ring to the second bracket; or The retaining ring and the second bracket are welded together; or The spring body is provided with a clearance opening that communicates with the through hole, and the clearance opening is disposed opposite to the fixing part.

7. The hinge structure as described in claim 1, characterized in that, The hinge structure also includes a torsion spring disposed between the first bracket and the second bracket to provide a clamping force when the first bracket is folded outward relative to the second bracket.

8. The hinge structure as described in claim 7, characterized in that, The torsion spring is configured as a double torsion spring.

9. The hinge structure as described in claim 8, characterized in that, The double torsion spring includes two spring bodies, a connector connecting the two spring bodies, and two torsion arms disposed at the ends of the two spring bodies away from the connector. The second bracket has a first abutment portion and two second abutment portions on opposite sides. The connector abuts against the first abutment portion, and the two torsion arms abut against the two second abutment portions respectively. The first bracket has a pressure plate that contacts the connector and presses against the double torsion spring when the first bracket is flipped outward to provide an outward clamping force.

10. A head-mounted display device, characterized in that, The head-mounted display device includes a frame, temples, and a hinge structure as described in any one of claims 1 to 9, wherein one of the frame and the temples is fixedly connected to the first bracket, and the other is fixedly connected to the second bracket.

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