Head-mounted adjusting mechanism and head-mounted equipment

Abstract

The invention discloses a head-mounted adjusting mechanism and a head-mounted device.The head-mounted adjusting mechanism is used for the head-mounted device, the head-mounted device comprises a head-mounted body, bandages are arranged at the two opposite ends of the head-mounted body, and the head-mounted adjusting mechanism comprises an adjusting rack, a shell, an adjusting gear, a one-way locking device and an adjusting knob; the adjusting rack is arranged at one end, far away from the head-mounted main body, of the bandage, and at least part of the adjusting rack movably penetrates into the shell; the adjusting gear is rotationally mounted in the shell, and the adjusting gear is in meshing transmission with the adjusting rack; the one-way locking device is connected with the adjusting gear, and the adjusting knob is connected with the one-way locking device; when the adjusting knob is rotated, the adjusting knob can drive the adjusting gear to rotate through the one-way locking device, so that the adjusting rack is adjusted to adjust the tightness of the bandage; when the adjusting knob is static, the one-way locking device can limit autorotation of the adjusting gear, and therefore the adjusting rack is locked. According to the technical scheme, the possibility of accidental loosening of the head-mounted equipment is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of head-mounted devices, and in particular to a head-mounted adjustment mechanism and a head-mounted device. Background Art

[0002] At present, the wearing form of head-mounted devices is generally: wrapping the head with a wraparound strap and fixing it to the head. In order to adapt to the head shape of different people, a head-mounted adjustment mechanism is generally provided to adjust the tightness of the head strap, and the head-mounted adjustment mechanism is generally set behind the head.

[0003] However, when the strap needs to be tightened around the head, the tightening force may cause the strap to rebound, making it difficult to tighten the strap, or the strap may slide after tightening. Summary of the invention

[0004] The main purpose of the present invention is to provide a head-mounted adjustment mechanism, aiming to reduce the possibility of accidental loosening of the head-mounted device.

[0005] To achieve the above-mentioned object, the head-mounted adjustment mechanism proposed in the present invention is used for a head-mounted device, wherein the head-mounted device comprises a head-mounted body, and straps are provided at opposite ends of the head-mounted body. Optionally, the head-mounted adjustment mechanism comprises:

[0006] An adjustment rack, provided at one end of the strap away from the head-mounted body;

[0007] a housing, wherein at least a portion of the adjusting rack is movably disposed in the housing;

[0008] an adjusting gear, rotatably mounted in the housing, the adjusting gear meshing with the adjusting rack for transmission; and

[0009] A one-way locking device and an adjusting knob, wherein the one-way locking device is connected to the adjusting gear, and the adjusting knob is connected to the one-way locking device;

[0010] When the adjusting knob is rotated, the adjusting knob can drive the adjusting gear to rotate through the one-way locking device, thereby adjusting the adjusting rack to adjust the tightness of the strap;

[0011] When the adjusting knob is stationary, the one-way locking device can limit the self-rotation of the adjusting gear, thereby locking the adjusting rack.

[0012] Optionally, the one-way locking device comprises a support member, a first rotating member and a rolling member, the support member is fixed to the housing, a first mounting groove is provided on the support member, a first mounting hole is provided at the bottom of the first mounting groove, the adjusting knob is connected to the first rotating member, the first rotating member is rotatably installed in the first mounting groove, a limiting notch is provided on the first rotating member, the rolling member is rollingly installed in the limiting notch, one end of the adjusting gear facing the one-way locking device passes through the first mounting hole and extends into the first mounting groove, and a side facing the rolling member has an abutting surface;

[0013] When the adjusting knob is rotated, the first rotating member drives the rolling member to rotate, and the rolling member abuts against the abutting surface to drive the adjusting gear to rotate;

[0014] When the adjusting knob is stationary, the adjusting gear rotates automatically, and the abutting surface drives the rolling element to abut against the inner wall of the mounting groove, thereby locking the adjusting rack.

[0015] Optionally, the adjusting gear includes a gear portion and a linkage portion which are connected to each other, the gear portion is arranged at one end close to the adjusting gear, the linkage portion is arranged at an end away from the adjusting rack, the linkage portion is located in the first mounting groove, the gear portion passes through the first mounting hole and engages with the adjusting rack, and the abutment surface is formed on the side of the linkage portion facing the rolling element.

[0016] Optionally, the abutting surface is configured as an arc surface recessed toward the axis of the adjusting gear.

[0017] Optionally, the first rotating member is formed with a second mounting groove, the bottom wall of the second mounting groove has a second mounting hole, the end of the adjusting gear facing the first rotating member is passed through the second mounting hole and extends into the second mounting groove, the limiting notch is provided on the side wall of the second mounting groove, and a first guide notch extending along the radial direction of the adjusting gear is provided on the bottom wall, the end of the rolling member facing the bottom wall has a first guide protrusion, and the first guide protrusion is movably mounted in the first guide notch.

[0018] Optionally, the head-mounted adjustment mechanism further includes a second rotating member, which covers the limiting notch, and one side of the second rotating member is connected to the first rotating member, and the other side is connected to the adjustment knob.

[0019] Optionally, a second guide notch extending radially along the adjusting gear is formed on the second rotating member, and one end of the rolling member facing the second rotating member has a second guide protrusion, and the second guide protrusion is movably mounted in the second guide notch.

[0020] Optionally, the second rotating member is fastened to the first rotating member via a fastener.

[0021] Optionally, a limiting convex portion is provided on a side of the second rotating member facing away from the adjusting gear, a limiting groove is provided on the adjusting knob, and the limiting convex portion is at least partially inserted into the limiting groove.

[0022] The present invention also provides a head-mounted device, comprising the head-mounted adjustment mechanism as described above.

[0023] The technical solution of the present invention is to set an adjustment gear in the shell, and the adjustment rack is at least partially movably arranged in the shell, and the adjustment gear is meshed with the adjustment rack for transmission, so as to adjust the overlap distance of the two straps, that is, to adjust the tightness of the head-mounted device relative to the head, so that the head-mounted device can adapt to different head sizes. A one-way locking device is set between the adjustment gear and the adjustment knob, the one-way locking device is connected to the adjustment gear, and the adjustment knob is connected to the one-way locking device; when the user manually rotates the adjustment knob, the one-way locking device acts as a transmission device, so that the adjustment knob drives the adjustment gear to rotate through the one-way locking device, thereby driving the adjustment rack to move, so as to adjust the tightness of the strap; and when the user manually pulls the adjustment rack, the one-way locking device can limit the self-rotation of the adjustment gear, thereby locking the adjustment rack, so that it is difficult for the user to adjust the tightness of the strap by directly pulling the adjustment rack, thereby reducing the possibility of accidental loosening of the head-mounted device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0025] Figure 1 It is a structural schematic diagram of an embodiment of a head-mounted adjustment mechanism of the present invention;

[0026] Figure 2 for Figure 1 Installation diagram of the one-way locking mechanism in the headband adjustment mechanism;

[0027] Figure 3 for Figure 1 An internal diagram of the one-way locking mechanism in the headband adjustment mechanism;

[0028] Figure 4 for Figure 1 A cross-sectional view of the headband adjustment mechanism;

[0029] Figure 5 for Figure 1 Exploded view of the headband adjustment mechanism.

[0030] Description of Figure Numbers:

[0031]

[0032]

[0033] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative state relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0036] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text is to include three parallel solutions, taking "A and / or B as an example", including solution A, or solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0037] The present invention provides a head-mounted adjustment mechanism 10, which is used for a head-mounted device, wherein the head-mounted device includes a head-mounted body, and straps are provided at opposite ends of the head-mounted body. The head-mounted device may be an AR device, a VR device, or the like.

[0038] In the embodiment of the present invention, Figures 1 to 5As shown, the head-mounted adjustment mechanism 10 includes an adjustment rack 20, a shell 30, an adjustment gear 40, a one-way locking device 50 and an adjustment knob 60. The adjustment rack 20 is arranged at one end of the strap away from the head-mounted body, and the adjustment rack 20 is at least partially movably arranged in the shell 30; the adjustment gear 40 is rotatably installed in the shell 30, and the adjustment gear 40 is meshed with the adjustment rack 20 for transmission; the one-way locking device 50 is connected to the adjustment gear 40, and the adjustment knob 60 is connected to the one-way locking device 50; when the adjustment knob 60 is rotated, the adjustment knob 60 can drive the adjustment gear 40 to rotate through the one-way locking device 50, thereby adjusting the adjustment rack 20 to adjust the tightness of the strap; when the adjustment knob 60 is stationary, the one-way locking device 50 can limit the self-rotation of the adjustment gear 40, thereby locking the adjustment rack 20.

[0039] Specifically, the head-mounted body is worn in front of the head as the main body of the head-mounted device, and straps are provided at opposite ends of the head-mounted body, so that the two straps wrap around the head in a surrounding form, thereby fixing the head. The adjustment rack 20 is provided at one end of the strap away from the head-mounted body, and at least one of the two straps is provided with an adjustment rack 20, and the adjustment rack 20 is at least partially movably arranged in the shell 30 and meshes with the adjustment gear 40, so as to adjust the overlap distance of the two straps, that is, to adjust the tightness of the head-mounted device relative to the head, so that the head-mounted device can adapt to different head sizes. When the two straps are tightened, the head-mounted adjustment mechanism 10 generates a tightening force on the adjustment gear 40, and the corresponding head will give the adjustment rack 20 a rebound force, so that the two straps have a tendency to move away from each other. At this time, the adjustment rack 20 may self-slip, thereby driving the adjustment gear 40 to rotate in the reverse direction, and the adjustment gear 40 drives the adjustment knob 60 to rotate in the direction of loosening; or, during the wearing process, the strap may also self-slip due to the movement of the head, so that the strap has the risk of loosening. In this solution, the one-way locking device 50 is arranged between the adjusting gear 40 and the adjusting knob 60. When the user manually rotates the adjusting knob 60, the one-way locking device 50 acts as a transmission device, so that the adjusting knob 60 drives the adjusting gear 40 to rotate through the one-way locking device 50, thereby driving the adjusting rack 20 to move to adjust the tightness of the strap; and when the user manually pulls the adjusting rack 20, the one-way locking device 50 can limit the self-rotation of the adjusting gear 40, thereby locking the adjusting rack 20, making it difficult for the user to adjust the tightness of the strap by directly pulling the rack, thereby reducing the possibility of accidental loosening of the head-mounted device.

[0040] The technical solution of the present invention is to set an adjustment gear 40 in the shell 30, and the adjustment rack 20 is at least partially movably arranged in the shell 30, and the adjustment gear 40 is meshed with the adjustment rack 20 for transmission, thereby adjusting the overlapping distance of the two straps, that is, adjusting the tightness of the head-mounted device relative to the head, so that the head-mounted device can adapt to different head sizes. The one-way locking device 50 is arranged between the adjusting gear 40 and the adjusting knob 60, the one-way locking device 50 is connected to the adjusting gear 40, and the adjusting knob 60 is connected to the one-way locking device 50; when the user manually rotates the adjusting knob 60, the one-way locking device 50 acts as a transmission device, so that the adjusting knob 60 drives the adjusting gear 40 to rotate through the one-way locking device 50, thereby driving the adjusting rack 20 to move to adjust the tightness of the strap; and when the user manually pulls the adjusting rack 20, the one-way locking device 50 can limit the self-rotation of the adjusting gear 40, thereby locking the adjusting rack 20, making it difficult for the user to adjust the tightness of the strap by directly pulling the adjusting rack 20, thereby reducing the possibility of accidental loosening of the head-mounted device.

[0041] In one embodiment, the one-way locking device 50 includes a support member 510, a first rotating member 520 and a rolling member 530. The support member 510 is fixed to the housing 30. A first mounting groove 511 is provided on the support member 510. A first mounting hole 512 is provided at the bottom of the first mounting groove 511. The adjusting knob 60 is connected to the first rotating member 520. The first rotating member 520 is rotatably installed in the first mounting groove 511. A limiting notch 521 is provided on the first rotating member 520. The rolling member 530 is rollingly installed in the limiting notch 521. One end of the adjusting gear 40 facing the one-way locking device 50 passes through the first mounting hole 512 and extends into the first mounting groove 511, and a side facing the rolling member 530 has an abutting surface 410.

[0042] When the adjusting knob 60 is rotated, the first rotating member 520 drives the rolling member 530 to rotate, and the rolling member 530 abuts against the abutting surface 410 to drive the adjusting gear 40 to rotate;

[0043] When the adjusting knob 60 is stationary, the adjusting gear 40 rotates by itself, and the abutting surface 410 drives the rolling element 530 to abut against the inner wall of the mounting groove, thereby locking the adjusting rack 20 .

[0044] Specifically, the support member 510 is fixedly installed in the housing 30, and a first installation groove 511 is provided on the support member 510, and the first installation groove 511 is used for installing the first rotating member 520, and the first rotating member 520 is rotatably installed in the first installation groove 511, and is connected to the adjustment knob 60, so that the user can drive the first rotating member 520 to rotate by adjusting the knob 60. A limiting notch 521 is provided on the first rotating member 520, and the rolling member 530 is rollingly installed in the limiting notch 521, so that the first rotating member 520 can not only drive the rolling member 530 to rotate together, but also make the rolling member 530 rotate with itself as the rotation axis, that is, roll in the limiting notch 521. A first mounting hole 512 is provided at the bottom of the first mounting groove 511, and one end of the adjusting gear 40 facing the one-way locking device 50 passes through the first mounting hole 512 and extends into the first mounting groove 511, so as to facilitate the interaction between the adjusting gear 40 and the rolling element 530. Therefore, the side of the adjusting gear 40 facing the rolling element 530 has a contact surface 410, and the contact surface 410 can interact with the rolling element 530.

[0045] When the user manually rotates the adjustment knob 60, the adjustment knob 60 drives the first rotating member 520 to rotate, and the rolling member 530 rotates in the limiting notch 521 along with the rotation of the first rotating member 520, and abuts against the abutment surface 410, so that the first rotating member 520 drives the adjustment gear 40 to rotate through the abutment between the rolling member 530 and the abutment surface 410, and then drives the adjustment rack 20 to move to adjust the tightness of the strap. When the user manually pulls the adjustment rack 20, the adjustment gear 40 has a tendency to rotate, so that the abutting surface 410 can move the rolling element 530 radially toward the periphery of the first mounting groove 511, so that the rolling element 530 is tightly abutted against the inner side wall of the first mounting groove 511. Since the first mounting groove 511 is fixedly arranged, the greater the rotation tendency of the adjustment gear 40, the greater the abutting force generated by the corresponding abutting surface 410, the greater the abutting force between the corresponding rolling element 530 and the inner side wall of the first mounting groove 511, the greater the friction, and the rolling element 530 is more difficult to rotate, thereby limiting the rotation of the adjustment gear 40, thereby locking the adjustment rack 20. And the one-way locking device 50 is transmitted or locked by the action of the surface and the surface, so the noise generated is small, which is helpful to achieve the silent adjustment of the strap. Among them, the support member 510 is fastened to the housing 30 by a fastener, and can also be fixed by bonding or clamping.

[0046] Preferably, the abutting surface 410 is configured as an arc surface that is recessed toward the axis of the adjusting gear 40. Specifically, the abutting surface 410 is configured as an inwardly recessed arc surface, which can further facilitate the rolling element 530 to act on the abutting surface 410, thereby driving the adjusting gear 40 to rotate, and can further facilitate the abutting surface 410 to abut against the rolling element 530. The abutting surface 410 is configured as an arc surface, which can also further reduce the transmission noise of the one-way locking device 50. In other embodiments, the abutting surface 410 can also be configured as a plurality of folded surfaces that are arranged at an angle to each other, that is, the abutting surface 410 is formed on the side of the polygonal notch provided at the edge of the adjusting gear 40.

[0047] Further, see Figure 4 and Figure 5 The adjusting gear 40 includes a gear portion 420 and a linkage portion 430 connected to each other. The gear portion 420 is arranged at one end close to the adjusting gear 40, and the linkage portion 430 is arranged at one end away from the adjusting rack 20. The linkage portion 430 is located in the first mounting groove 511. The gear portion 420 passes through the first mounting hole 512 to mesh with the adjusting rack 20, and the abutment surface 410 is formed on the side of the linkage portion 430 facing the rolling element 530. Specifically, the adjusting gear 40 is penetrated in the first mounting hole 512, so that the linkage portion 430 is located in the first mounting groove 511, the gear portion 420 passes through the first mounting hole 512 to mesh with the adjusting rack 20, and the abutment surface 410 is formed on the side of the linkage portion 430 facing the rolling element 530, and the outer diameter of the linkage portion 430 is greater than or equal to the outer diameter of the gear portion 420, thereby reducing the possibility of axial movement of the adjusting gear 40.

[0048] In order to further limit the movement of the rolling element 530, in one embodiment, the first rotating element 520 is formed with a second mounting groove 522, the bottom wall of the second mounting groove 522 is provided with a second mounting hole 523, one end of the adjusting gear 40 facing the first rotating element 520 is penetrated through the second mounting hole 523 and extends into the second mounting groove 522, the limiting notch 521 is provided on the side wall of the second mounting groove 522, and the bottom wall is provided with a first guide notch 524 extending along the radial direction of the adjusting gear 40, and one end of the rolling element 530 facing the bottom wall is provided with a first guide protrusion 531, and the first guide protrusion 531 is movably installed in the first guide notch 524. Specifically, the linkage part 430 is located in the second mounting groove 522, the gear part 420 passes through the second mounting hole 523 and the first mounting hole 512 in sequence, and meshes with the adjusting rack 20, so as to facilitate the abutment between the abutting surface 410 and the rolling element 530, and at the same time improve the transmission stability of the one-way locking device 50. The limiting notch 521 is provided on the side wall of the second mounting groove 522, and a first guide notch 524 extending in the radial direction of the adjusting gear 40 is provided on the bottom wall. The end of the rolling element 530 facing the bottom wall has a first guide protrusion 531, and the first guide protrusion 531 is movably installed in the first guide notch 524, so as to limit the position of the rolling element 530, and ensure that the rolling element 530 moves in the radial direction of the adjusting gear 40 in the limiting notch 521, so as to ensure the stability of the transmission. Preferably, the rolling element 530 is configured as a rolling shaft, so as to facilitate the relative movement and abutment between the rolling element 530 and the abutment surface 410.

[0049] In another embodiment, the head-mounted adjustment mechanism 10 further includes a second rotating member 540, which covers the limiting notch 521, and one side of the second rotating member 540 is connected to the first rotating member 520, and the other side is connected to the adjusting knob 60. Specifically, the second rotating member 540 is located between the first rotating member 520 and the adjusting knob 60, and one side of the second rotating member 540 is connected to the first rotating member 520, and the other side is connected to the adjusting knob 60, so that the adjusting knob 60 drives the first rotating member 520 to rotate by driving the second rotating member 540 to rotate. And the second rotating member 540 covers the limiting notch 521, so as to reduce the possibility of the rolling member 530 escaping from the limiting notch 521.

[0050] To further restrict the movement of the rolling element 530, in one embodiment, again referring to Figures 1 to 5, a second guide notch 541 extending along the radial direction of the adjusting gear 40 is provided on the second rotating member 540, and a second guide protrusion 532 is provided at one end of the rolling member 530 facing the second rotating member 540, and the second guide protrusion 532 is movably mounted on the second guide notch 541. Specifically, the second guide protrusion 532 is movably mounted on the second guide notch 541, thereby further limiting the position of the rolling member 530, ensuring that the rolling member 530 moves along the radial direction of the adjusting gear 40 in the limiting notch 521, thereby further ensuring the stability of the transmission. Preferably, the rolling member 530 is configured as a rolling shaft, thereby facilitating the relative movement and abutment between the rolling member 530 and the abutting surface 410. Therefore, the rolling shaft includes a main body, and two small ends arranged at opposite ends of the main body, and the diameter of the small ends is smaller than the diameter of the main body, and the two small ends are the first guide protrusion 531 and the second guide protrusion 532.

[0051] Furthermore, the second rotating member 540 is fastened to the first rotating member 520 by a fastener. Specifically, the second rotating member 540 is fastened to the first rotating member 520 by a fastener, and the fastener can be configured as a fastening screw, so as to ensure the relative fixation of the first rotating member 520 and the second rotating member 540 and facilitate the assembly of the one-way locking device 50. Of course, in other embodiments, the second rotating member 540 and the first rotating member 520 can also be fixed by clamping.

[0052] In order to facilitate the connection between the second rotating member 540 and the adjusting knob 60, in one embodiment, a limiting convex portion 542 is provided on the side of the second rotating member 540 away from the adjusting gear 40, and a limiting groove 610 is provided on the adjusting knob 60, and the limiting convex portion 542 is at least partially inserted into the limiting groove 610. Specifically, by inserting at least partially the limiting convex portion 542 into the limiting groove 610, the second rotating member 540 and the adjusting knob 60 are relatively fixed, so that the adjusting knob 60 can drive the second rotating member 540 to move. In order to further reduce the possibility of axial movement of the adjusting knob 60, a blocking member is provided between the housing 30 and the adjusting knob 60, and the blocking member can limit the axial movement of the adjusting knob 60. In this embodiment, the blocking member is configured as a clamping spring 620.

[0053] The present invention also proposes a head-mounted device, which includes a head-mounted adjustment mechanism 10. The specific structure of the head-mounted adjustment mechanism 10 refers to the above-mentioned embodiment. Since the head-mounted device adopts all the technical solutions of all the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here one by one.

[0054] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A head-mounted adjustment mechanism for a head-mounted device, the head-mounted device comprising a head-mounted body, and straps are provided at opposite ends of the head-mounted body, characterized in that: The head-mounted adjustment mechanism comprises: An adjustment rack, provided at one end of the strap away from the head-mounted body; a housing, wherein at least a portion of the adjusting rack is movably disposed in the housing; an adjusting gear, rotatably mounted in the housing, the adjusting gear meshing with the adjusting rack for transmission; and A one-way locking device and an adjusting knob, wherein the one-way locking device is connected to the adjusting gear, and the adjusting knob is connected to the one-way locking device; When the adjusting knob is rotated, the adjusting knob can drive the adjusting gear to rotate through the one-way locking device, thereby adjusting the adjusting rack to adjust the tightness of the strap; When the adjusting knob is stationary, the one-way locking device can limit the self-rotation of the adjusting gear, thereby locking the adjusting rack.

2. The head-mounted adjustment mechanism according to claim 1, characterized in that: The one-way locking device comprises a support member, a first rotating member and a rolling member, the support member is fixed to the housing, a first mounting groove is provided on the support member, a first mounting hole is provided at the bottom of the first mounting groove, the adjusting knob is connected to the first rotating member, the first rotating member is rotatably mounted in the first mounting groove, a limiting notch is provided on the first rotating member, the rolling member is rollingly mounted in the limiting notch, an end of the adjusting gear facing the one-way locking device passes through the first mounting hole and extends into the first mounting groove, and a side facing the rolling member has an abutting surface; When the adjusting knob is rotated, the first rotating member drives the rolling member to rotate, and the rolling member abuts against the abutting surface to drive the adjusting gear to rotate; When the adjusting knob is stationary, the adjusting gear rotates automatically, and the abutting surface drives the rolling element to abut against the inner wall of the mounting groove, thereby locking the adjusting rack.

3. The head-mounted adjustment mechanism according to claim 2, characterized in that: The adjusting gear includes a gear portion and a linkage portion that are connected to each other, the gear portion is arranged at one end close to the adjusting gear, the linkage portion is arranged at one end away from the adjusting rack, the linkage portion is located in the first mounting groove, the gear portion passes through the first mounting hole and meshes with the adjusting rack, and the abutment surface is formed on a side of the linkage portion facing the rolling element.

4. The head-mounted adjustment mechanism according to claim 2, characterized in that: The abutting surface is configured as an arc surface recessed toward the axis of the adjusting gear.

5. The head-mounted adjustment mechanism according to claim 2, characterized in that: The first rotating member is formed with a second mounting groove, and the bottom wall of the second mounting groove has a second mounting hole. The end of the adjusting gear facing the first rotating member is penetrated through the second mounting hole and extends into the second mounting groove. The limiting notch is formed on the side wall of the second mounting groove, and a first guide notch extending along the radial direction of the adjusting gear is formed on the bottom wall. The end of the rolling member facing the bottom wall has a first guide protrusion, and the first guide protrusion is movably mounted on the first guide notch.

6. The head-mounted adjustment mechanism according to claim 2, characterized in that: The head-mounted adjustment mechanism also includes a second rotating member, which is covered in the limiting notch, and one side of the second rotating member is connected to the first rotating member, and the other side is connected to the adjustment knob.

7. The head-mounted adjustment mechanism according to claim 6, characterized in that: The second rotating member is provided with a second guide notch extending in the radial direction of the adjusting gear, and the rolling member has a second guide protrusion at one end facing the second rotating member, and the second guide protrusion is movably mounted in the second guide notch.

8. The head-mounted adjustment mechanism according to claim 6, characterized in that: The second rotating member is fastened to the first rotating member via a fastener.

9. The head-mounted adjustment mechanism according to claim 6, characterized in that: A limiting convex portion is provided on a side of the second rotating member facing away from the adjusting gear, a limiting groove is provided on the adjusting knob, and the limiting convex portion is at least partially inserted into the limiting groove.

10. A head mounted device, characterized in that: The invention comprises a head-mounted adjustment mechanism as claimed in any one of claims 1 to 9.

Images