Temple connection structure and head-mounted display device

Abstract

The application discloses a temple connecting structure and a head-mounted display device, and relates to the technical field of head-mounted display devices. The temple connecting structure is used for connecting a temple and a frame, and comprises a base, two mounting brackets, a sliding block and an elastic piece. The two mounting brackets comprise a first bracket and a second bracket, the mounting brackets are provided with meshing tooth portions, the two mounting brackets are rotationally connected through the meshing tooth portions, at least one of the mounting brackets is provided with a first pushing portion, the sliding block is slidably arranged on the base along the extension direction of a reference axis, the sliding block is provided with a second pushing portion corresponding to the first pushing portion, the first pushing portion is slidably abutted against the second pushing portion, the elastic piece is connected between the sliding block and the base and can be elastically deformed along the extension direction of the reference axis, and the first pushing portion pushes the second pushing portion in the process of the temple being turned outwards from an open position, so that the sliding block moves away from the first pushing portion and the elastic piece is in an elastically deformed state. The technical scheme of the application can make the clamping force of the temple more stable in a wearing state, thereby improving the wearing comfort of the temple.

Description

Technical Field

[0001] This invention relates to the field of head-mounted display technology, and in particular to a temple connection structure for glasses and a head-mounted display device. Background Technology

[0002] Current head-mounted display devices, such as AR glasses or VR glasses, typically use a hinge structure between the temples and the frame that provides clamping force when the temples are turned outwards, allowing them to fit snugly against the user's head. However, the clamping force increases significantly as the temples turn outwards, which can cause noticeable discomfort for users with larger heads due to excessive clamping force. Summary of the Invention

[0003] The main objective of this invention is to provide a temple connection structure that makes the clamping force of the temple more stable when the temple is being worn, thereby improving the wearing comfort of the temple.

[0004] To achieve the above objectives, the present invention proposes a temple connection structure for connecting temples and frames, the temple connection structure comprising:

[0005] Base;

[0006] Two mounting brackets are rotatably connected to the base about a reference axis. The two mounting brackets include a first bracket and a second bracket. The first bracket rotates about one reference axis and is correspondingly mounted on the temple. The second bracket rotates about another reference axis and is correspondingly mounted on the frame. The two reference axes are parallel and spaced apart. The mounting brackets are provided with meshing teeth. The two mounting brackets achieve linkage rotation through the meshing teeth. At least one mounting bracket is provided with a first push part.

[0007] A slider is slidably disposed on the base along the extension direction of the reference axis; the slider has a second push portion corresponding to the first push portion, and the first push portion slidably abuts against the second push portion; and

[0008] An elastic element connects the slider and the base, and is capable of elastic deformation along the extension direction of the reference axis;

[0009] As the temple flips outward from its open position, it causes the first bracket to rotate around the reference axis, and the first push part pushes against the second push part, so that the slider moves away from the first push part and the elastic element is in an elastic deformation state.

[0010] Optionally, the base includes a mounting base and two guide posts. The two mounting brackets are installed one-to-one with the two guide posts. The mounting base includes a main plate portion and two opposite side plate portions. The two side plate portions are respectively disposed at both ends of the main plate portion. The guide posts connect the two side plate portions. The central axis of the guide posts is configured as the reference axis. The slider is slidably sleeved on the guide posts.

[0011] Optionally, two elastic elements are provided, and the two elastic elements are installed in a one-to-one correspondence with the two guide posts. Both the first bracket and the second bracket are provided with the first push part, and the slider is provided with two opposing second push parts. When the first push part of the first bracket abuts against one of the second push parts, the first push part of the second bracket simultaneously abuts against the other second push part.

[0012] Optionally, the mounting bracket includes a first mounting portion, a first cylindrical portion and a second cylindrical portion disposed on the same side of the first mounting portion, the guide post passing through the first cylindrical portion and the second cylindrical portion, the first cylindrical portion and the second cylindrical portion being spaced apart in the extension direction of the reference axis, the slider being disposed in the space, the first pushing portion being disposed on the end face of the first cylindrical portion near the second cylindrical portion, and the meshing teeth being disposed on the peripheral side surface of the second cylindrical portion.

[0013] Optionally, the first cylindrical portion is provided with a limiting groove on the end face away from the second cylindrical portion, the limiting groove extending circumferentially along the first cylindrical portion, and the side plate portion is provided with a limiting protrusion corresponding to the limiting groove. When the temple is in the outward extreme position, the limiting protrusion abuts against one end face of the limiting groove, and when the temple is in the folded position, the limiting protrusion abuts against the other end face of the limiting groove.

[0014] Optionally, the guide post includes a first column segment and a second column segment connected together, with a limiting step surface formed between the first column segment and the second column segment. The slider slides on the first column segment and is furthest from the first push part when it abuts the limiting step surface.

[0015] Optionally, the elastic element is configured as a compression spring sleeved on the guide post, with one end of the compression spring abutting against the slider and the other end abutting against the side plate portion away from the first push portion.

[0016] Optionally, one of the first pusher and the second pusher is provided with an outwardly convex arc surface, and the other is provided with a first sliding protrusion that can slide on the outwardly convex arc surface; during the process of the first bracket rotating from the open position toward the outwardly folding limit position, the angle between the tangent plane of the outwardly convex arc surface at the contact point that abuts against the first sliding protrusion and the reference axis gradually increases, and the elastic deformation of the elastic element gradually increases.

[0017] Optionally, the convex arc surface is provided on the second push portion, and the first sliding protrusion is provided on the first push portion. In the direction along the reference axis and away from the first push portion, the angle between the tangent plane of the convex arc surface and the reference axis gradually decreases.

[0018] Optionally, the mounting bracket is further provided with a third push part, and the slider is provided with a corresponding fourth push part. The temple has a critical position during the rotation from the open position to the folded position. At the critical position, the slider is furthest from the first push part. At least from the critical position to the starting interval of the folded position, the slider moves towards the first push part under the action of the elastic element.

[0019] Optionally, the fourth push part is configured as a fourth sliding protrusion, and the third push part is configured as a third sliding protrusion. When the temple is in a critical position, the tip of the fourth sliding protrusion abuts against the tip of the third sliding protrusion.

[0020] Optionally, the second pusher and the fourth pusher are spaced apart in the circumferential direction of the reference axis and define a positioning groove, wherein when the temple is in the open position, the first pusher and the third pusher are at least partially embedded in the positioning groove.

[0021] The present invention also proposes a head-mounted display device, including a frame, temples, and the aforementioned temple connecting structure, wherein the temples are mounted on the frame via the temple connecting structure.

[0022] Optionally, the head-mounted display device further includes functional components, which include at least one of a wiring harness, a flexible printed circuit board, and a flexible heat-conducting component. The base of the temple connection structure includes two opposing main board portions, with a mounting channel formed between the two main board portions. The frame has a first cavity, and the temple has a second cavity. The openings of the first cavity and the second cavity are spaced apart by a clearance gap. The base is at least partially located within the clearance gap, and the first cavity, the mounting channel, and the second cavity are connected and can accommodate the functional component. One main board portion is exposed inside the clearance gap, and the other main board portion is exposed outside the clearance gap.

[0023] Optionally, the head-mounted display device further includes an elastic sealing tube; the elastic sealing tube includes a central tube section and two side tube sections connected together, the two side tube sections are respectively disposed at both ends of the central tube section, the central tube section passes through the mounting channel and surrounds the mounting bracket, elastic element and slider, the outer peripheral surface of one side tube section is connected to the inner wall surface of the first cavity, and the outer peripheral surface of the other side tube section is connected to the inner wall surface of the second cavity.

[0024] Optionally, the head-mounted display device further includes an elastic sealing tube; the elastic sealing tube includes two separate elastic tube segments, which respectively fill the first cavity and the second cavity, and the functional component passes through the elastic tube segments.

[0025] Optionally, the head-mounted display device further includes an elastic sealing tube; the elastic sealing tube is disposed in the clearance gap and on the outer side of the main board portion, and the outer side of the elastic sealing tube abuts against the edges of the openings of the first cavity and the second cavity.

[0026] In the technical solution of this invention, when the temple is in the open position, the slider is in the initial position on the base. During the process of the temple flipping outward from the open position, the elastic element has a certain deformation, that is, a certain elastic potential energy, which enables the elastic element to generate a force that pushes the slider to move toward its initial position. The slider transmits the elastic force it receives to the first push part through the second push part, and the force exerted by the slider on the first bracket is partially converted into a clamping force tangential to the rotation direction of the first bracket. The clamping torque formed by this clamping force can resist the continued outward movement of the first bracket, that is, make the first bracket have a tendency to return to its open position, thereby making the temple have a tendency to rotate toward its open position, and making the temple generate a clamping force to clamp the user's head when worn. Secondly, the clamping force of the temple is perpendicular to the reference axis, while the elastic element deforms elastically along the extension direction of the reference axis. Therefore, in the process of the elastic force of the elastic element being indirectly converted into the clamping force of the temple, the clamping force of the temple will not increase linearly with the increase of the elastic force. This helps to stabilize the clamping force of the temple within a certain range, thereby improving the wearing comfort of the temple. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of an embodiment of the temple connection structure of the present invention;

[0029] Figure 2 for Figure 1 Exploded view of the parts in the embodiment shown;

[0030] Figure 3 for Figure 1 The front view of the embodiment shown shows the first bracket in the open position.

[0031] Figure 4 for Figure 1 The top view of the embodiment shown shows the first bracket in the open position.

[0032] Figure 5 for Figure 3 Sectional view at point AA;

[0033] Figure 6 for Figure 1 The embodiment shown constructs a rectangular coordinate system at the contact point between the first and second pushers. Figure 5 A schematic diagram of the structure shown;

[0034] Figure 7 for Figure 3 Sectional view at point BB;

[0035] Figure 8 for Figure 4 Sectional view at CC;

[0036] Figure 9 for Figure 4 Sectional view at point DD;

[0037] Figure 10 for Figure 8 A magnified view of a section at point E in the middle;

[0038] Figure 11 for Figure 6 The diagram shows a rectangular coordinate system viewed from a perspective parallel to the X-axis, with the first support in the open position.

[0039] Figure 12 for Figure 1 A partial structural diagram of the embodiment shown, in which the first bracket is in a position between the open position and the outward limit position;

[0040] Figure 13 for Figure 1 Another partial structural diagram of the embodiment shown, in which the first support is in a critical position;

[0041] Figure 14 for Figure 2 The front view of the middle slider;

[0042] Figure 15 for Figure 2 A schematic diagram of the middle slider from another perspective;

[0043] Figure 16 This is a partial cross-sectional view of another embodiment of the temple connection structure of the present invention, in which the first bracket is in the open position;

[0044] Figure 17This is a partial cross-sectional view of another embodiment of the temple connection structure of the present invention, in which the first bracket is in the open position;

[0045] Figure 18 for Figure 17 Exploded view of the parts in the embodiment shown;

[0046] Figure 19 for Figure 17 The front view of the embodiment shown shows the first bracket in the open position.

[0047] Figure 20 for Figure 17 The top view of the embodiment shown shows the first bracket in the open position.

[0048] Figure 21 for Figure 19 Sectional view at FF;

[0049] Figure 22 for Figure 19 Sectional view at point GG;

[0050] Figure 23 for Figure 20 Sectional view at HH;

[0051] Figure 24 for Figure 18 A schematic diagram of the middle slider from another perspective;

[0052] Figure 25 for Figure 1 The illustrated embodiment is a partial structural diagram of an application in a head-mounted display device. The diagram does not show the elastic sealing tube.

[0053] Figure 26 This is a partial structural cross-sectional view of an embodiment of the head-mounted display device of the present invention;

[0054] Figure 27 for Figure 26 Schematic diagram of the structure of the flexible sealing tube;

[0055] Figure 28 This is a partial structural cross-sectional view of another embodiment of the head-mounted display device of the present invention;

[0056] Figure 29 for Figure 28 Schematic diagram of the structure of the flexible sealing tube;

[0057] Figure 30 This is a partial structural cross-sectional view of another embodiment of the head-mounted display device of the present invention.

[0058] Explanation of icon numbers:

[0059] label name label name 10 base 23 First Push Section 11 Mounting base 23a First slip convex 111 Motherboard 24 Third push section 112 Side panel 25 meshing teeth 113 Limiting card protrusion 30 slider 114 Installation Channel 31 Second push section 12 Guide post 31a Convex arc surface 121 First column segment 32 Fourth Push Department 122 Second column segment 33 positioning groove 123 Limiting step surface 40 elastic element 20 Mounting bracket 51 eyeglass frames 201 First Installation Department 511 First cavity 202 First tube section 52 temples 203 Second tube section 521 Second chamber 204 Avoiding space 53 Clearance 205 Limiting groove 54 Functional components 21 First support 55 Elastic sealing tube 22 Second support 551 Central section 221 Second Installation Department 552 Side pipe section 222 Third tube section 553 Avoiding grooves 223 Fourth tube 554 Flexible pipe section

[0060] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0061] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0062] It should be noted that if the embodiments of the present invention 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 certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0063] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0064] Furthermore, if the embodiments of this invention 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 meaning of "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 invention.

[0065] This invention proposes a temple connection structure for connecting the temples and frames of eyeglasses, such as head-mounted display devices. This structure allows the temples to be mounted on the frame, providing a clamping force to hold the device securely against the user's head and improving its stability. Head-mounted display devices include, but are not limited to, AR glasses, VR glasses, and MR glasses. Taking AR glasses as an example, their frames typically include a display module to provide image information to the user's eyes.

[0066] It should be noted that as the temples gradually unfold from the folded state, they pass through the folded position, the open position, and the outward limit position in sequence. When in the folded position, the free end of the temple is close to or abuts against the frame. When in the open position or the outward limit position, the free end of the temple is far away from the frame. The temples have multiple wearing states from the open position to the outward limit position to allow users with different head sizes to wear them normally.

[0067] Please refer to Figures 1 to 4 In one embodiment of the present invention, the temple 52 connection structure includes:

[0068] Base 10;

[0069] Two mounting brackets 20 are rotatably connected to the base 10 about a reference axis. The two mounting brackets 20 include a first bracket 21 and a second bracket 22. The first bracket 21 is corresponding to the mounting temple 52, and the second bracket 22 is corresponding to the mounting frame 51. At least one mounting bracket 20 is provided with a first push part 23.

[0070] The slider 30 is slidably disposed on the base 10 along the extension direction of the reference axis. The slider 30 has a second push part 31 corresponding to the first push part 23, and the first push part 23 slidably abuts against the second push part 31.

[0071] The elastic element 40 connects the slider 30 and the base 10, and is capable of elastic deformation along the extension direction of the reference axis;

[0072] During the process of the temple 52 flipping outward from the open position (i.e., rotating from the open position toward the extreme position of outward flipping), it will drive the first support 21 to rotate around the reference axis, and the first push part 23 will push against the second push part 31, so that the slider 30 moves away from the first push part 23 and the elastic member 40 is in an elastic deformation state.

[0073] It can be understood that the folding position of the first bracket 21 corresponds to the folding position of the temple 52, the opening position of the first bracket 21 corresponds to the opening position of the temple 52, and the outward turning limit position of the first bracket 21 corresponds to the outward turning limit position of the temple 52. Therefore, the process of the first bracket 21 turning outward from the opening position corresponds to the process of the temple 52 turning outward from the opening position.

[0074] That is, during the process of the first bracket 21 flipping outward from the open position, the elastic element 40 has elastic potential energy and can cause the slider 30 to move towards the first push part 23, and the first bracket 21 tends to return to the open position by pushing the first push part 23 through the second push part 31.

[0075] In the technical solution of this invention, when the temple 52 is in the open position, the slider 30 is in the initial position on the base 10. During the process of the temple 52 flipping outward from the open position, since the elastic element 40 has a certain deformation, that is, a certain elastic potential energy, the elastic element 40 can generate a force to push the slider 30 toward its initial position. The slider 30 transmits the elastic force it receives to the first push part 23 through the second push part 31, and converts part of the force applied to the first bracket 21 by the slider 30 into a clamping force tangential to the rotation direction of the first bracket 21. The clamping torque formed by this clamping force can resist the continued outward movement of the first bracket 21, that is, make the first bracket 21 have a tendency to return to its open position, thereby making the temple 52 have a tendency to rotate toward its open position. It is understandable that the temple 52 has a tendency to rotate toward its open position, which can increase the clamping force of the temple 52 on the user's head when worn. This clamping force helps the eyewear product to be worn stably and reliably. In this way, the temple 52 can fit well on the head and reduce the risk of the temple 52 and the device slipping forward.

[0076] Secondly, the clamping force of the temple 52 is perpendicular to the reference axis, while the elastic element 40 elastically deforms along the extension direction of the reference axis. Therefore, in the process of the elastic force of the elastic element 40 being indirectly converted into the clamping force of the temple 52, the clamping force of the temple 52 will not increase linearly with the increase of the elastic force. This helps to stabilize the clamping force of the temple 52 within a certain range, thereby improving the wearing comfort of the temple 52.

[0077] It should be noted that when the temple 52 is in the open position, the elastic element 40 can be either already compressed or stretched, meaning the elastic element 40 has a pre-deformation and its initial elastic potential energy is not zero; or the elastic element 40 can be in its natural state, meaning it has no pre-deformation and its initial elastic potential energy is zero. In the former case, when the temple 52 flips outward from the open position, the deformation of the elastic element 40 can increase or decrease, meaning the elastic potential energy can increase or decrease, as long as it maintains elastic potential energy. In the latter case, when the temple 52 flips outward from the open position, the deformation of the elastic element 40 starts from zero and increases. That is, if the deformation of the elastic element 40 when the slider 30 is in the initial position is defined as the pre-deformation, then the value of the pre-deformation is greater than or equal to 0.

[0078] In addition, the meaning of the increase or decrease of the elastic potential energy of the elastic element 40 includes, but is not limited to, the elastic potential energy changing abruptly to a certain value and then remaining basically unchanged, or the elastic potential energy gradually increasing or decreasing, or the elastic potential energy gradually increasing or decreasing to a certain value and then remaining basically unchanged.

[0079] It is worth mentioning that when the elastic element 40 has a non-zero initial elastic potential energy, the clamping torque experienced by the first bracket 21 during the outward flipping process from the open position is less prone to sudden amplitude changes, making the user perceive a smoother change in the clamping force of the temple 52, thus providing a better operating feel for the temple 52. Of course, in other embodiments, the elastic element 40 may not have an initial elastic potential energy, that is, the initial elastic potential energy may be zero.

[0080] Understandably, to further improve the handling feel when the temples 52 are flipped outwards, the clamping torque of the first bracket 21 could be limited to a certain range, ensuring that this clamping torque remains essentially constant regardless of the temple 52's outward flip angle. This could be, for example, but not limited to, 150 N*mm, 180 N*mm, 200 N*mm, 220 N*mm, or 250 N*mm. In this way, because the clamping torque remains roughly constant, the problem of excessive clamping force as the temple 52's outward flip angle increases can be avoided, thereby improving the comfort of using the eyewear.

[0081] Preferably, within the outward tilt angle range of 2° to 15° from the open position of the temple 52, the amplitude fluctuation of the clamping torque is kept within 10%. For example, taking the clamping torque M = 200 N*mm as an example, the value variation can be controlled between 180 N*mm and 220 N*mm, so the operation feel and wearing comfort of the temple 52 when wearing it are both ideal.

[0082] Please refer to Figures 10 to 16 In order to keep the clamping torque M approximately constant, in one embodiment, one of the first push part 23 and the second push part 31 is provided with an outwardly convex arc surface 31a, and the other is provided with a first sliding protrusion 23a that can slide on the outwardly convex arc surface 31a; during the process of the first bracket 21 rotating from the open position toward the outwardly flipped limit position, the angle between the tangent plane of the outwardly convex arc surface 31a at the contact point that abuts against the first sliding protrusion 23a and the reference axis gradually increases, and the elastic deformation of the elastic member 40 gradually increases.

[0083] Specifically, with Figures 10 to 15 The illustrated embodiment is used as an example for explanation. In this case, the convex arc surface is provided in the second push part, and the first sliding protrusion is provided in the first push part. In the direction along the reference axis and away from the first push part, the angle between the tangent plane of the convex arc surface and the reference axis gradually decreases. Please refer to the following: Figure 5 and Figure 6When the temple is in the open position, the contact point of the first sliding convex point on the outer convex arc surface is defined as the initial contact point Q0. The XOY plane is defined to pass through the initial contact point Q0 and be perpendicular to the reference axis. The intersection of the reference axis and the XOY plane is defined as the coordinate pole O (the coordinate origin O). The polar axis is defined as the ray originating from the coordinate pole O and passing through the initial contact point Q0 (which is also the positive X-axis direction). The reference axis is defined as the Z-axis, and the direction in which the slider moves closer to its initial position is defined as the positive Z-axis direction. Based on the above definitions, a cylindrical coordinate system is constructed. Therefore, the cylindrical coordinates of the contact point Q of the first sliding convex point on the outer convex arc surface are: Where r is the perpendicular distance between the contact point Q and the Z-axis. Let be the angle between the projection of line segment OQ onto the XOY plane and the polar axis OQ0, and z be the distance of the contact point Q from the XOY plane. It can be understood that as the temple continues to fold outward from its open position... This represents the angle of rotation of the first support around the reference axis (which is also the outward folding angle of the temple), r represents the rotation radius of the contact point Q from the reference axis, and z represents the further deformation Δx of the elastic element.

[0084] Further, please refer to Figure 11 The force analysis diagram shows the force F exerted by the slider on the first support through the contact point Q. N Perpendicular to the convex arc surface, define a reference plane perpendicular to the X-axis and passing through the applied force F. N The force F N It can be decomposed into two perpendicular force F on the reference plane. k and F T , where F k This represents the elastic force originating from the elastic element, F. T This represents the clamping force tangential to the rotation direction of the first support, i.e., F. T Perpendicular to the radius of rotation of the first support, F N With F T The included angle θ represents the angle between the tangent plane of the convex arc surface at the contact point where it abuts the first sliding convex surface and the reference axis. θ is greater than or equal to 0 and less than 90°.

[0085] Then we have equation ①: F T =F k *cotθ; and equation ②: M=F T *r=F k *cotθ*r.

[0086] It is understandable that during the process of the temple flipping outward from the open position, although the slider gradually moves away from the first push part and the deformation of the elastic element gradually increases, resulting in the elastic force F kIt gradually increases, but because the included angle θ gradually decreases and cotθ gradually decreases, it is possible to make F T Not affected by the outward angle It increases linearly with increasing F, that is, F T It can be kept within a certain value range. Since the rotation radius r remains basically constant, the clamping torque M of the first bracket can be kept roughly constant, thereby keeping the clamping force exerted on the head by the temple roughly constant.

[0087] Without loss of generality, F k = K*(Δx0+Δx), where K represents the elastic coefficient of the elastic element, Δx0 represents the pre-deformation of the elastic element when the first support is in the open position, and the initial elastic potential energy F k0 =K*Δx0; Δx represents the deformation of the elastic element when the first support folds outward from its open position, and Δx is related to the folding angle. Satisfy the formula

[0088] Furthermore, F k =K*(Δx0+Δx), F k0 =K*Δx0 and Substituting into equation ②, we obtain equation ③:

[0089] Based on equation ③, we can derive equation ④:

[0090] Since the coordinate pole O of the cylindrical coordinate system corresponds to the open position of the first support, at this time... That is, corresponding to the state where the elastic element Δx = 0, the cylindrical coordinate value of the contact point Q is z = Δx.

[0091] Furthermore, the rectangular coordinates of the contact point Q can be expressed as: That is, the rectangular coordinates x, y, and z of the contact point Q can be expressed by equations ⑤, ⑥, and ⑦, respectively, as follows:

[0092] Formula ⑤:

[0093] Formula ⑥:

[0094] Formula ⑦:

[0095] It is understandable that by designing and manufacturing the convex arc surface based on the rectangular coordinates of the contact point Q, the produced slider can make the clamping torque M as constant as possible at an ideal value when it is matched with the mounting bracket, such as 200N*mm as mentioned above.

[0096] Of course, because The value ranges from 2° to 15°, that is... Very small, then They are very close in value, and can be used... Equivalent substitution This yields equation ⑧, which can be selected by those skilled in the art according to design needs, and is not specifically limited in this application.

[0097] Specifically, formula ⑧:

[0098] It should be noted that the contact methods between the first convex surface and the outer convex arc surface include, but are not limited to, point contact, line contact, and surface contact. For the latter two, the contact point Q refers to the midpoint between the contact line and the contact surface. Preferably, the outer convex arc surface is designed as a line contact according to the rectangular coordinate formula of the contact point Q mentioned above, in order to improve the smoothness and stability of force transmission, and also to help extend the service life of the temple connection structure.

[0099] Of course, other formulas can also be used to define the rectangular coordinates (x, y, z) of the contact point Q, thereby defining the convex arc surface, as long as the rectangular coordinates (x, y, z) of the contact point Q satisfy the following relationship:

[0100] The value of coordinate x changes with the rotation angle of the first support. As the value of x increases, the value of x gradually decreases, and the rate of change of the coordinate value x gradually increases.

[0101] The value of coordinate y changes with the rotation angle of the first support. As the value increases, the value gradually increases, and the rate of change of the coordinate value y gradually decreases.

[0102] The value of coordinate z changes with the rotation angle of the first support. As the value increases, the value gradually increases, and the rate of change of the coordinate value z gradually decreases.

[0103] In some embodiments, please refer to Figure 16 Alternatively, the convex arc surface can be provided in the first push part, and the first sliding protrusion can be provided in the second push part. In the direction along the reference axis and away from the first push part, the angle between the tangent plane of the convex arc surface and the reference axis gradually increases.

[0104] Of course, it is not necessary to keep the clamping torque M approximately constant. In other embodiments, the clamping torque M can also vary with the outward angle. The size gradually increases as the temples grow, as long as there is clamping force during the outward rotation of the temples.

[0105] Please refer to Figure 2 , Figure 5 , Figure 7 , Figure 8 , Figures 10 to 15 , Figures 17 to 24Optionally, in some embodiments, the mounting bracket 20 is further provided with a third pusher 24, and the slider 30 is correspondingly provided with a fourth pusher 32. During the rotation of the temple 52 from the open position to the folded position, there is a critical position where the slider 30 is furthest from the first pusher 23. At least from the critical position to the initial interval of the folded position, the slider 30 moves towards the first pusher 23 under the action of the elastic member 40. It should be noted that the distance between the slider 30 and the first pusher 23 refers to the distance between the center point of the slider 30 and the center point of the first pusher 23 along the reference axis.

[0106] Specifically, during the folding and storage of the temple 52 from its open position, once the temple 52 flips past the critical position, the slider 30 will be rapidly moved back to its starting position by the elastic force of the elastic element 40, causing the temple 52 to quickly rotate towards the folded position, thus achieving a slingshot-like folding function. This makes it convenient for users to fold and store the temple 52, and the presence of the critical position also prevents the temple 52 from unfolding back to the open position on its own. Of course, in other embodiments, the critical position may not be provided.

[0107] Optionally, the fourth pusher 32 is configured as a fourth sliding protrusion, and the third pusher 24 is configured as a third sliding protrusion. When the temple 52 is in the critical position, the tip of the fourth sliding protrusion abuts against the tip of the third sliding protrusion. That is, at least from the critical position to the initial interval of the open position, the slider 30 moves towards the first pusher 23 under the action of the elastic member 40. It can be understood that both sidewalls of the third and fourth sliding protrusions have a large slope, allowing the slider 30 to move quickly after passing the critical position, thereby enabling the temple 52 to simultaneously have the functions of ejection folding and ejection unfolding.

[0108] Specifically, as the temple 52 gradually unfolds from its folded position, once it passes a critical position, the slider 30 is rapidly moved towards its starting position by the elastic force of the elastic element 40, causing the temple 52 to quickly rotate towards the open position, thus achieving a slingshot-like unfolding function. This allows the user to easily unfold the temple 52, and the presence of the critical position prevents the temple 52 from folding back to its folded position on its own. Of course, in other embodiments, only the folding function can be configured without the unfolding function, or vice versa.

[0109] Please refer to Figures 10 to 15 , Figure 22 and Figure 24Optionally, the second pusher 31 and the fourth pusher 32 are spaced apart in the circumferential direction of the reference axis and define positioning grooves 33. When the temple 52 is in the open position, the first pusher 23 and the third pusher 24 are at least partially embedded in the positioning grooves 33. That is, when the temple 52 is in the open position, the first pusher 23 abuts against the second pusher 31 while the third pusher 24 abuts against the fourth pusher 32. At this time, the elastic member 40 has initial elastic potential energy, and the second pusher 31 and the fourth pusher 32 work together to maintain a stable mechanical balance of the mounting bracket 20 on the base 10, thereby enabling the temple 52 to stabilize itself in the open position. Of course, in other embodiments, the first pusher 23 and the third pusher 24 may not be embedded in the positioning grooves 33.

[0110] Please refer to Figure 5 , Figure 7 and Figure 15 Optionally, in some embodiments, two fourth sliding protrusions are provided, one on each side of the reference axis, and two third sliding protrusions are provided, one on each side of the reference axis, with the third and fourth sliding protrusions corresponding one-to-one. This improves the stability of force transmission between the slider 30 and the mounting bracket 20, making the forces on the mounting bracket 20 and the slider 30 more balanced and stable, thereby enhancing the structural stability of the temple 52 connection structure. Of course, in other embodiments, only one third sliding protrusion and one fourth sliding protrusion may be provided.

[0111] Please refer to Figure 2 , Figure 8 , Figure 9 , Figures 18 to 20 , Figure 23 Optionally, in some embodiments, the base 10 includes a mounting base 11 and a guide post 12. The mounting base 11 includes a main plate portion 111 and two opposing side plate portions 112, with the two side plate portions 112 respectively located at both ends of the main plate portion 111. The guide post 12 connects the two side plate portions 112, and the central axis of the guide post 12 is configured as a reference axis. The slider 30 is slidably sleeved on the guide post 12. This not only simplifies the structure and makes it easy to implement, but also facilitates the installation of the slider 30 and the elastic element 40, and improves the smoothness and stability of the slider 30's movement. Of course, in some embodiments, the mounting base 11 may also have a guide rail, and the slider 30 may have a groove corresponding to the guide rail, allowing it to slide on the guide rail. In other embodiments, the base 10 may not have a mounting base 11, but only a guide post 12, which is directly mounted on the temple 52 or the frame 51.

[0112] It is understandable that there can be one or two reference axes. For example, please refer to... Figure 2 , Figure 8 and Figure 9In some embodiments, two guide posts 12 are provided, and the central axes of both guide posts 12 serve as reference axes. That is, the two reference axes are parallel and spaced apart. Two mounting brackets 20 are installed one-to-one with the two guide posts 12. The mounting brackets 20 are also provided with meshing teeth 25, and the two mounting brackets 20 achieve linkage rotation through the meshing teeth 25. That is, the first bracket 21 rotates around the central axis of the guide post 12 closest to it, the second bracket 22 rotates around the central axis of the guide post 12 closest to it, and the two mounting brackets 20 rotate around their respective reference axes. In this way, the two mounting brackets 20 are linked together by the two meshing teeth 25, so that when the temple 52 rotates at a certain angle, the frame 51 can also rotate at the same angle, thereby improving the rotation sensitivity and convenience of the temple 52 and the frame 51. It should be noted that parallel refers to a parallel or nearly parallel state.

[0113] Please refer to Figures 1 to 5 , Figures 7 to 10 In an embodiment where two guide posts 12 are provided, optionally, two elastic elements 40 are provided, with each elastic element 40 corresponding to one of the two guide posts 12. Both the first bracket 21 and the second bracket 22 are provided with a first push portion 23, and the slider 30 is provided with two opposing second push portions 31. When the first push portion 23 of the first bracket 21 abuts against one second push portion 31, the first push portion 23 of the second bracket 22 simultaneously abuts against the other second push portion 31. Specifically, under the transmission of the meshing teeth 25, during the unfolding or folding process of the temple 52, both mounting brackets 20 exert a force on the slider 30 to cause it to move, and both can receive the reaction force of the slider 30, thus generating a clamping force on the temple 52. In this way, by providing two sets of guide posts 12 and elastic elements 40, both the temple 52 and the frame 51 can be subjected to the force of the elastic elements 40, thereby increasing the force transmission path and improving the stability of force transmission. Alternatively, in an embodiment where the mounting bracket 20 is provided with a third pusher 24, both the first bracket 21 and the second bracket 22 are also provided with a third pusher 24.

[0114] It is understood that in embodiments where two guide posts 12 are provided, only one elastic element 40 may be provided, and the first push part 23 may be provided on either the first bracket 21 or the second bracket 22, with the elastic element 40 corresponding to the guide post 12 of the first push part 23. When the first push part 23 is provided on the first bracket 21, the elastic force of the elastic element 40 is directly transmitted to the first bracket 21 through the slider 30; while when the first push part 23 is provided on the first bracket 21, the elastic force of the elastic element 40 is first transmitted to the second bracket 22 through the slider 30, and then transmitted to the first bracket 21 through the meshing teeth 25 between the second bracket 22 and the first bracket 21.

[0115] In an embodiment where two guide posts 12 are provided, optionally, one slider 30 is provided, which is sleeved on both guide posts 12, and the slider 30 is provided with two opposing second push portions 31. That is, each mounting bracket 20 is provided with a first push portion 23, which can cooperate with the second push portion 31 on the same slider 30 that is close to it. In this way, the structure can be simplified, and the rotation of the two mounting brackets 20 can be linked, further improving the stability and smoothness of force transmission. Of course, in other embodiments, there may also be two sliders 30, with the two sliders 30 corresponding to the two guide posts 12 one by one, that is, each guide post 12 is equipped with one slider 30, and the two sliders 30 move independently of each other.

[0116] Please refer to Figures 17 to 24 Of course, in other embodiments, there is only one guide post 12 and one elastic element 40, and only one reference axis. The two mounting brackets 20 rotate around the central axis of the same guide post 12, and the first push part 23 is provided on the first bracket 21. In this embodiment, only the first bracket 21 is provided with the first push part 23 and the third push part 24. The second bracket 22 is not provided with the first push part 23 and the third push part 24. In this way, the reaction force generated by the slider 30 through the first push part 23 or the third push part 24 can be directly transmitted to the first bracket 21, thereby effectively acting on the temple 52 on the first bracket 21. Thus, by providing only one guide post 12 and one elastic element 40, the connection structure of the temple 52 can be simplified and its manufacturing cost reduced.

[0117] Please refer to Figures 17 to 24 In an embodiment where the guide post 12 is a single unit, optionally, the first bracket 21 includes a first mounting portion 201, a first cylindrical portion 202 and a second cylindrical portion 203 located on the same side of the first mounting portion 201, the guide post 12 passing through the first cylindrical portion 202 and the second cylindrical portion 203, the first cylindrical portion 202 and the second cylindrical portion 203 being spaced apart in the extension direction of the reference axis to form a clearance space 204, the slider 30 being located in the clearance space 204, and the first push portion 23 being located on the end face of the first cylindrical portion 202 near the second cylindrical portion 203. Thus, the structure is simple and easy to implement.

[0118] In an embodiment where there is only one guide post 12, the second bracket 22 optionally includes a second mounting portion 221, a third cylindrical portion 222 and a fourth cylindrical portion 223 located on the same side of the second mounting portion 221. The third cylindrical portion 222 is located on the side of the first cylindrical portion 202 away from the second cylindrical portion 203, and the fourth cylindrical portion 223 is located on the side of the second cylindrical portion 203 away from the first cylindrical portion 202. The guide post 12 passes through the third cylindrical portion 222 and the fourth cylindrical portion 223. In this way, the third cylindrical portion 222 and the fourth cylindrical portion 223 together limit the first bracket 21 in the direction of the reference axis, enabling the first bracket 21 to rotate smoothly and stably around the guide post 12 without affecting the sliding of the slider 30 in the clearance space 204.

[0119] In an embodiment where the guide post 12 is a single unit, the second mounting portion 221, the third cylindrical portion 222, the fourth cylindrical portion 223, and the mounting base 11 are optionally integrally formed. That is, the two side plate portions 112 of the mounting base 11 serve as the third cylindrical portion 222 and the fourth cylindrical portion 223, respectively, and the second mounting portion 221 extends from one side. This further simplifies the structure and reduces costs, and reduces assembly steps and improves production efficiency. Of course, in other embodiments, the second bracket 22 and the mounting base 11 can be separately configured, with the third cylindrical portion 222 located between the first cylindrical portion 202 and one side plate portion 112 of the mounting base 11, and the fourth cylindrical portion 223 located between the second cylindrical portion 203 and the other side plate portion 112 of the mounting base 11.

[0120] Please refer to Figures 1 to 5 , Figures 7 to 10 In an embodiment where two guide posts 12 are provided, optionally, the mounting bracket 20 includes a first mounting portion 201, a first cylindrical portion 202 and a second cylindrical portion 203 located on the same side of the first mounting portion 201, the guide post 12 passing through the first cylindrical portion 202 and the second cylindrical portion 203, the first cylindrical portion 202 and the second cylindrical portion 203 forming a clearance space 204 spaced apart in the extension direction of the reference axis, the slider 30 being located in the clearance space 204, the first pushing portion 23 being located on the end face of the first cylindrical portion 202 near the second cylindrical portion 203, and the meshing tooth portion 25 being located on the peripheral side surface of the second cylindrical portion 203. That is, both the first bracket 21 and the second bracket 22 are provided with a first mounting portion 201, a first cylindrical portion 202 and a second cylindrical portion 203, thus the structure is simple and easy to implement.

[0121] Please refer to Figure 2 and Figure 18 Optionally in some embodiments, the third pusher 24 is disposed on the end face of the first cylindrical portion 202 near the second cylindrical portion 203, the third pusher 24 and the first pusher 23 are distributed along the circumference of the first cylindrical portion 202, and the third pusher 24 is disposed on the side of the first pusher 23 near the first mounting portion 201.

[0122] Please refer to Figure 2 and Figure 18 Optionally, in some embodiments, the first cylindrical portion 202 has a limiting groove 205 on its end face away from the second cylindrical portion 203. The limiting groove 205 extends circumferentially along the first cylindrical portion 202, and the side plate portion 112 has a limiting protrusion 113 corresponding to the limiting groove 205. When the first bracket 21 is in the outward extreme position, the limiting protrusion 113 abuts against one end face of the limiting groove 205; when the first bracket 21 is in the folded position, the limiting protrusion 113 abuts against the other end face of the limiting groove 205. In this way, the limiting protrusion 113 and the limiting groove 205 cooperate with each other to limit the two extreme positions when the mounting bracket 20 rotates relative to the base 10, thereby avoiding the problem of excessive outward rotation or excessive folding of the temple 52 and protecting the temple 52 and the frame 51. Of course, in other embodiments, the two extreme positions when the mounting bracket 20 rotates relative to the base 10 can also be limited by the mutual abutment of the temple 52 and the frame 51.

[0123] It should be noted that in the embodiment where the guide post is set as one and the second mounting part 221, the third cylindrical part 222, the fourth cylindrical part 223 and the mounting base 11 are integrally formed, the limiting protrusion 113 is provided on the side plate part 112, which means that the limiting protrusion 113 is provided on the third cylindrical part 222.

[0124] Specifically, the first mounting part 201 of the mounting bracket 20 can be installed on the temple 52 and the frame 51 by fasteners such as screws and rivets, or it can be fixed on the temple 52 and the frame 51 by bonding or welding. This application does not make specific limitations in this regard.

[0125] Please refer to Figure 2 , Figure 9 , Figure 18 and Figure 23 Optionally, in some embodiments, the guide post 12 includes a first post segment 121 and a second post segment 122 connected together, with a limiting step surface 123 formed between the first post segment 121 and the second post segment 122. The slider 30 slides on the first post segment 121 and is furthest from the first push part 23 when it abuts against the limiting step surface 123. That is, the limiting step surface 123 on the guide post 12 defines an extreme position of the slider 30, which is simple in structure and easy to implement.

[0126] Please refer to Figure 2 , Figure 9 , Figure 18 and Figure 23Optionally, in some embodiments, the elastic element 40 is configured as a compression spring sleeved on the guide post 12, with one end abutting against the slider 30 and the other end abutting against the side plate portion 112 away from the first push portion 23. This results in a simple and easy-to-implement structure, facilitating the installation of the temple 52 connection structure. It is worth noting that in embodiments where the guide post 12 includes a first post segment 121 and a second post segment 122 connected together, the compression spring is sleeved on the second post segment 122. Of course, in some embodiments, the elastic element 40 can also be a tension spring, with one end fixed to the slider 30 and the other end fixed to the side plate portion 112 near the first push portion 23. In other embodiments, the elastic element 40 can also be a rubber body or a silicone body, etc.

[0127] Please refer to Figures 25 to 30 The present invention also proposes a head-mounted display device, including temples 52, a frame 51, and the aforementioned temple 52 connecting structure. The specific structure of the temple 52 connecting 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, which will not be described in detail here. The temples 52 are mounted on the frame 51 through the temple 52 connecting structure.

[0128] Please refer to Figure 25 , Figure 26 , Figure 28 and Figure 30 Optionally, in some embodiments, the head-mounted display device further includes a functional component 54, which includes at least one of a wiring harness, a flexible printed circuit board, and a flexible heat-conducting component. The base 10 of the temple 52 connection structure includes two opposing main board portions 111, with a mounting channel 114 formed between the two main board portions 111. The frame 51 has a first cavity 511, and the temple 52 has a second cavity 521. The openings of the first cavity 511 and the second cavity 521 are spaced apart by a clearance gap 53. The base 10 is at least partially located within the clearance gap 53, and the first cavity 511, the mounting channel 114, and the second cavity 521 are connected and can allow the functional component 54 to pass through. One main board portion 111 is exposed inside the clearance gap 53, and the other main board portion 111 is exposed outside the clearance gap 53. Thus, by having the two main board portions 111 of the base 10 respectively shield the inner and outer sides of the clearance gap 53, the functional component 54 passing through the base 10 can be protected, and the neatness and aesthetics of the head-mounted display device at the temple 52 connection point can be improved. Of course, in some embodiments, the base 10 may not have the main board portions 111, that is, there is no need to provide a structure for shielding the clearance gap 53. In other embodiments, the functional component 54 may not be provided.

[0129] It should be noted that when the head-mounted display device is worn on the user's head, the inner side of the temple 52 refers to the side facing the user's eyes, and the outer side of the temple 52 refers to the side away from the user's eyes. The inner side of the clearance gap 53 is located on the inner side of the temple 52, and the outer side of the clearance gap 53 is located on the outer side of the temple 52.

[0130] Please refer to Figure 26 and Figure 27 In some embodiments, the head-mounted display device further includes an elastic sealing tube 55, which comprises a central tube segment 551 and two side tube segments 552 connected together. The two side tube segments 552 are respectively located at both ends of the central tube segment 551. The central tube segment 551 passes through the mounting channel 114 and surrounds the mounting bracket 20, the elastic element 40, and the slider 30. The outer peripheral surface of one side tube segment 552 is connected to the inner wall surface of the first cavity 511, and the outer peripheral surface of the other side tube segment 552 is connected to the inner wall surface of the second cavity 521. Thus, since the sealing interface, i.e., the interface of the side tube segment 552 used to connect the first cavity 511 or the second cavity 521, is stationary relative to the temple 52 or the frame 51 and is far away from the rotation axis area of ​​the mounting bracket 20 and the deformation area of ​​the functional component 54 (e.g., the flexible circuit board), a static sealing effect is achieved, completely isolating the internal functional component 54 of the device from the external environment, thereby achieving advanced waterproof functions such as IPX7 or ATM levels, thus improving the reliability of the device.

[0131] Optionally, a clearance groove 553 is provided on one side wall of the middle tube section 551. The clearance groove 553 protrudes towards the mounting channel 114 and corresponds to the end of the main plate portion 111 exposed inside the clearance gap 53. Thus, as the temple 52 rotates from the open position to the folded position, the main plate portion 111 exposed inside the clearance gap 53 gradually extends into the first cavity 511 and the second cavity 521. By providing the clearance groove 553, the problem of the main plate portion 111 pushing against the elastic sealing tube 55 and causing the sealing interface connection of the elastic sealing tube 55 to fail can be avoided. At the same time, the problem of the force exerted by the elastic sealing tube 55 on the main plate portion 111 hindering the folding of the temple 52 can also be avoided.

[0132] Please refer to Figure 28 and Figure 29Of course, in other embodiments, the elastic sealing tube 55 may be located in the clearance gap 53 and on the outer side of the main board portion 111, with the outer side of the elastic sealing tube 55 abutting against the edges of the openings of the first cavity 511 and the second cavity 521. That is, in this embodiment, the relative movement interface between the temple 52 connecting structure and the temple 52 and the frame 51 at the clearance gap 53 serves as a sealing interface, forming a dynamic sealing effect. The elastic sealing tube 55 does not occupy the space of the mounting channel 114 of the base 10, thereby improving the smoothness of movement of the temple 52 connecting structure.

[0133] Please refer to Figure 30 In some embodiments, the elastic sealing tube 55 may comprise two separately arranged elastic tube segments 554, which respectively fill the first cavity 511 and the second cavity 521, with the functional component 54 passing through the elastic tube segments 554. That is, the portion of the temple 52 connecting structure and the portion of the functional component 54 located in the clearance gap 53 are not sealed. In this embodiment, the sealing interface is located on the peripheral side of the functional component 54, the inner wall of the first cavity 511, and the inner wall of the second cavity 521, and is far from the rotation axis area of ​​the mounting bracket 20, which can also achieve a static sealing effect. The structure is simple and easy to implement.

[0134] Alternatively, the material of the elastic sealing tube 55 may be, for example, but not limited to, rubber or silicone; this application does not impose any specific limitations.

[0135] The above description is merely an optional embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A temple connecting structure for connecting temples and frames, characterized in that, The temple connection structure includes: Base; Two mounting brackets are rotatably connected to the base about a reference axis. The two mounting brackets include a first bracket and a second bracket. The first bracket rotates about one reference axis and is correspondingly mounted on the temple. The second bracket rotates about another reference axis and is correspondingly mounted on the frame. The two reference axes are parallel and spaced apart. The mounting brackets are provided with meshing teeth. The two mounting brackets achieve linkage rotation through the meshing teeth. At least one mounting bracket is provided with a first push part. A slider is slidably disposed on the base along the extension direction of the reference axis; the slider has a second push portion corresponding to the first push portion, and the first push portion slidably abuts against the second push portion; and An elastic element connects the slider and the base, and is capable of elastic deformation along the extension direction of the reference axis; As the temple flips outward from the open position, it will cause the first bracket to rotate around the reference axis, and the first push part will push against the second push part, so that the slider moves away from the first push part and the elastic element is in an elastic deformation state. One of the first pusher and the second pusher is provided with an outwardly convex arc surface, and the other is provided with a first sliding protrusion that can slide on the outwardly convex arc surface; during the process of the first bracket rotating from the open position toward the outwardly folding limit position, the angle between the tangent plane of the outwardly convex arc surface at the contact point that abuts against the first sliding protrusion and the reference axis gradually increases, and the elastic deformation of the elastic element gradually increases, so that the clamping force generated by the temple is maintained within a preset range.

2. The temple connection structure as described in claim 1, characterized in that, The base includes a mounting base and two guide posts. The two mounting brackets are installed one-to-one with the two guide posts. The mounting base includes a main plate portion and two opposite side plate portions. The two side plate portions are respectively located at both ends of the main plate portion. The guide posts connect the two side plate portions. The central axis of the guide posts is configured as the reference axis. The slider is slidably sleeved on the guide posts.

3. The temple connection structure as described in claim 2, characterized in that, Two elastic elements are provided, and the two elastic elements are installed in a one-to-one correspondence with the two guide posts. The first bracket and the second bracket are both provided with the first push part, and the slider is provided with two opposing second push parts. When the first push part of the first bracket abuts against one of the second push parts, the first push part of the second bracket simultaneously abuts against the other second push part.

4. The temple connection structure as described in claim 3, characterized in that, The mounting bracket includes a first mounting portion, a first cylindrical portion and a second cylindrical portion disposed on the same side of the first mounting portion, a guide post passing through the first cylindrical portion and the second cylindrical portion, the first cylindrical portion and the second cylindrical portion being spaced apart in the extension direction of the reference axis, a slider being disposed in the space, a first pushing portion being disposed on the end face of the first cylindrical portion near the second cylindrical portion, and a meshing tooth being disposed on the peripheral side surface of the second cylindrical portion.

5. The temple connection structure as described in claim 4, characterized in that, The first cylindrical part has a limiting groove on the end face away from the second cylindrical part. The limiting groove extends circumferentially along the first cylindrical part. The side plate part has a limiting protrusion corresponding to the limiting groove. When the temple is in the outward extreme position, the limiting protrusion abuts against one end face of the limiting groove. When the temple is in the folded position, the limiting protrusion abuts against the other end face of the limiting groove.

6. The temple connection structure as described in claim 2, characterized in that, The guide post includes a first column segment and a second column segment connected together. A limiting step surface is formed between the first column segment and the second column segment. The slider slides on the first column segment and is furthest from the first push part when it abuts the limiting step surface. And / or, the elastic element is configured as a compression spring sleeved on the guide post, one end of the compression spring abutting against the slider and the other end abutting against the side plate portion away from the first push portion.

7. The temple connection structure as described in claim 1, characterized in that, The convex arc surface is provided on the second push part, and the first sliding protrusion is provided on the first push part. In the direction along the reference axis and away from the first push part, the angle between the tangent plane of the convex arc surface and the reference axis gradually decreases.

8. The temple connection structure as described in claim 1, characterized in that, The mounting bracket is further provided with a third push part, and the slider is provided with a fourth push part. The temple has a critical position during the rotation from the open position to the folded position. At the critical position, the slider is furthest from the first push part. At least from the critical position to the starting interval of the folded position, the slider moves towards the first push part under the action of the elastic element.

9. The temple connection structure as described in claim 8, characterized in that, The fourth push part is configured as a fourth sliding protrusion, and the third push part is configured as a third sliding protrusion. When the temple is in the critical position, the tip of the fourth sliding protrusion abuts against the tip of the third sliding protrusion. And / or, the second pusher and the fourth pusher are spaced apart in the circumferential direction of the reference axis and define a positioning groove, wherein when the temple is in the open position, the first pusher and the third pusher are at least partially embedded in the positioning groove.

10. A head-mounted display device, characterized in that, The glasses include a frame, temples, and a temple connection structure as described in any one of claims 1 to 9, wherein the temples are mounted on the frame via the temple connection structure.

11. The head-mounted display device as claimed in claim 10, characterized in that, The head-mounted display device further includes functional components, which include at least one of a wiring harness, a flexible printed circuit board, and a flexible heat-conducting component. The base of the temple connection structure includes two opposing main board portions, with a mounting channel formed between the two main board portions. The frame has a first cavity, and the temple has a second cavity. The openings of the first cavity and the second cavity are spaced apart by a clearance gap. The base is at least partially located within the clearance gap, and the first cavity, the mounting channel, and the second cavity are connected and can accommodate the functional component. One main board portion is exposed inside the clearance gap, and the other main board portion is exposed outside the clearance gap.

12. The head-mounted display device as claimed in claim 11, characterized in that, The head-mounted display device also includes a flexible sealing tube; The elastic sealing tube includes a central tube section and two side tube sections connected together. The two side tube sections are respectively located at both ends of the central tube section. The central tube section passes through the installation channel and surrounds the installation bracket, elastic element and slider. The outer peripheral surface of one side tube section is connected to the inner wall surface of the first cavity, and the outer peripheral surface of the other side tube section is connected to the inner wall surface of the second cavity. Alternatively, the elastic sealing tube comprises two separate elastic tube segments, which respectively fill the first cavity and the second cavity, and the functional component passes through the elastic tube segments; Alternatively, the elastic sealing tube is disposed in the clearance gap and on the outer side of the main board portion, and the outer side of the elastic sealing tube abuts against the edges of the openings of the first cavity and the second cavity.

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