Head-mounted adjustment device and head-mounted equipment

Abstract

The present invention discloses a head-mounted adjustment device and a head-mounted device, wherein the head-mounted adjustment device includes an adjustment rack, a rear head-mounted shell and a locking structure, wherein the adjustment rack is arranged at one end of the strap away from the head-mounted body. An adjustment gear is rotatably installed in the rear head-mounted shell, and the adjustment rack is at least partially movably arranged in the rear head-mounted shell and meshed with the adjustment gear; the locking structure is located on one side of the adjustment gear, and includes a mounting seat and a first limiting member, the mounting seat is fixed to the rear head-mounted shell, the first limiting member is slidably installed on the mounting seat, and a one-way locking portion is provided on the side of the first limiting member facing the adjustment gear; the first limiting member has a locking position and an unlocking position that can be switched with each other, in the locking position, the one-way locking portion is meshed with the adjustment gear, so that the adjustment gear can only rotate in the direction of loosening the two straps; in the unlocking position, the one-way locking portion is disengaged from the adjustment gear. The technical solution of the present invention simplifies the structure of the head-mounted adjustment device and realizes the development of miniaturization and lightweight of head-mounted devices.

Description

Technical Field

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

[0002] One type of head-mounted device is worn in a manner that the head is wrapped in a wraparound strap and fixed to the head. In order to adapt to the head shape of different people, a head-mounted adjustment device is generally provided to adjust the tightness of the head strap. The head-mounted adjustment device is generally arranged behind the head.

[0003] However, the rear head-mounted adjustment device of the head-mounted device in the prior art is complex in structure and difficult to operate, which reduces the user experience. In addition, the existing adjustment structure occupies a large space and cannot meet the future development trend of miniaturization and lightweight of head-mounted devices. Summary of the invention

[0004] The main purpose of the present invention is to provide a head-mounted adjustment device, aiming to simplify the structure of the head-mounted adjustment device and achieve the development of miniaturization and lightweight of head-mounted equipment.

[0005] To achieve the above-mentioned object, the head-mounted adjustment device 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. The head-mounted adjustment device comprises:

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

[0007] a rear head-mounted shell, wherein an adjustment gear is rotatably mounted in the rear head-mounted shell, and the adjustment rack is at least partially movably arranged in the rear head-mounted shell and meshes with the adjustment gear; and

[0008] The locking structure is installed in the rear head-mounted shell and is located on one side of the adjustment gear, and includes:

[0009] A mounting seat and a first limiting member, wherein the mounting seat is fixed to the rear headband shell, the first limiting member is slidably mounted on the mounting seat, and a one-way locking portion is provided on a side of the first limiting member facing the adjusting gear;

[0010] Wherein, the first limiting member has a locking position and an unlocking position that can be switched with each other. In the locking position, the one-way locking portion is engaged with the adjusting gear so that the adjusting gear can only rotate in the direction of loosening the two straps; in the unlocking position, the one-way locking portion is disengaged from the adjusting gear.

[0011] Optionally, the end of the one-way locking portion close to the adjusting gear has two angles arranged opposite to each other, one of the two angles is an obtuse angle, and the other is an acute angle or a right angle.

[0012] Optionally, a first limiting portion is provided on the side of the first limiting member facing the adjustment rack, and a first limiting protrusion is provided at the end of the adjustment rack away from the head-mounted body, and the first limiting protrusion is used to press against the first limiting portion to move the first limiting member from the locked position to the unlocked position.

[0013] Optionally, a first elastic member is provided between the mounting seat and the first limiting member, so that the first limiting member has an elastic force to slide toward the locking position.

[0014] Optionally, the locking structure further comprises a guide shaft, the mounting seat is provided with a guide ring groove, one end of the guide shaft is movably mounted on the first stopper, the other end is inserted into the guide ring groove, and slides back and forth in the guide ring groove along with the movement of the first stopper, and a first step is provided in the guide ring groove;

[0015] At the unlocking position, the first step limits the sliding of the guide shaft to limit the first limiting member from moving from the unlocking position to the locking position.

[0016] Optionally, a second limiting member is slidably mounted on the mounting seat, and the second limiting member is located at an end close to the first step, and is used to release the first step from limiting the first limiting member.

[0017] Optionally, the second limiting member is provided with a second limiting portion on the side facing the adjustment rack, and a second limiting protrusion is provided at the end of the adjustment rack close to the head-mounted body, and the second limiting protrusion presses against the second limiting portion, so that the second limiting member releases the limitation of the first step on the first limiting member.

[0018] Optionally, the second limiting portion has a guiding inclined surface facing the second limiting protrusion, so that the second limiting protrusion pushes the second limiting member to move in the direction of the guiding ring groove.

[0019] Optionally, a second elastic member is provided between the second limiting member and the mounting seat, and the second elastic member enables the second limiting member to have a tendency to move toward the adjusting rack.

[0020] Optionally, the guide ring groove includes a first guide groove and a second guide groove connected to each other, the second guide groove has a first guide section away from the first limiting member, the depth of the first guide section is greater than the depth of the first guide groove to form the first step, and the second limiting member pushes the guide shaft to slide in the second guide groove.

[0021] Optionally, the second guide groove further has a second guide section close to the first limit member, the depth of the second guide section is less than the depth of the first guide groove to form a second step to limit the movement direction of the guide shaft, and the first guide section and the second guide section are connected by a curved surface transition.

[0022] Optionally, the adjusting gear is rotatably installed in the rear head-mounted shell via a rotating shaft, and a reset member is provided between the adjusting gear and the rotating shaft, and the reset member enables the adjusting gear to have a tendency to rotate in a direction to tighten the two straps.

[0023] The present invention further provides a head-mounted device, comprising a head-mounted body, a rear head-mounted body, and the head-mounted adjustment device as described above, wherein the head-mounted adjustment device is arranged on the rear head-mounted body.

[0024] The technical solution of the present invention is to install the adjustment rack by rotating on the inner side of the rear head-mounted shell, and the adjustment rack is at least partially movably arranged in the rear head-mounted shell and meshed with the adjustment gear; the locking structure is installed in the rear head-mounted shell and is located on one side of the adjustment gear, the locking structure includes a mounting seat and a first limiter, the mounting seat is fixed to the rear head-mounted shell, the first limiter is slidably installed on the mounting seat, and the first limiter is provided with a one-way locking portion on the side facing the adjustment gear. Among them, the first limiter has a locking position and an unlocking position that are switched with each other. In the locking position, the one-way locking portion is meshed with the adjustment gear so that the adjustment gear can only rotate in the direction of loosening the two straps; in the unlocking position, the one-way locking portion is disengaged from the adjustment gear. When the user needs to adjust the head-mounted device, he only needs to pull the strap to move the adjustment rack, thereby driving the adjustment gear to rotate. And due to the restriction of the one-way locking portion on the adjustment gear, the adjustment gear can stop when rotating at any angle, thereby improving the adjustment accuracy of the head-mounted adjustment device. The locking of the adjustment gear and the adjustment rack can be achieved only by sliding the first limiter between the locking position and the unlocking position, which has a simple structure, is easy to operate, and improves the user experience. The locking structure is located on one side of the adjustment gear and between the two straps, which occupies a small space and hardly increases the overall volume of the rear head-mounted body, meeting the development trend of miniaturization and lightweight of future head-mounted devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] 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.

[0026] Figure 1It is a structural schematic diagram of an embodiment of a head-mounted adjustment device of the present invention;

[0027] Figure 2 for Figure 1 An exploded view of the headband adjustment device;

[0028] Figure 3 for Figure 2 A partial enlarged view of the middle A;

[0029] Figure 4 for Figure 1 A schematic diagram of the structure when the first limiting member in the head-mounted adjustment device is in the unlocked position;

[0030] Figure 5 for Figure 1 A schematic structural diagram of the headband adjustment device when the second limiting member releases the limiting effect of the first step on the first limiting member.

[0031] Description of Figure Numbers:

[0032] Label name Label name 100 Headband adjustment device 154 First guide groove 110 Adjustment rack 155 Second guide groove 111 first limiting protrusion 156 First guide section 112 The second limiting convex part 157 The second guide section 120 Back headband shell 158 The second step 121 Shaft 160 The first stopper 130 Adjustment gear 161 One-way locking part 131 Reset 162 Guide chute 140 Locking structure 163 Angle 141 The first elastic member 164 The first limiter 142 The second elastic member 170 Guide shaft 150 Mounting Block 180 The second stopper 151 Guide protrusion 181 The second limiter 152 Guide ring groove 182 Guide slope 153 First step

[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...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the 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 device 100 for use in a head-mounted device.

[0038] In the embodiment of the present invention, Figure 1 As shown, the head-mounted adjustment device 100 is used for a head-mounted device, the head-mounted device includes a head-mounted main body, and straps are provided at opposite ends of the head-mounted main body. The head-mounted adjustment device 100 includes an adjustment rack 110, a rear head-mounted shell 120 and a locking structure 140. The adjustment rack 110 is provided at one end of the strap away from the head-mounted main body; an adjustment gear 130 is rotatably installed in the rear head-mounted shell 120, and the adjustment rack 110 is at least partially movably arranged in the rear head-mounted shell 120 and meshed with the adjustment gear 130; the locking structure 140 is installed in the rear head-mounted shell 120 and is located on one side of the adjustment gear 130. The locking structure 140 includes a mounting seat 150 and a first limiting member 160. The mounting seat 150 is fixed to the rear head-mounted shell 120, and the first limiting member 160 is slidably installed on the mounting seat 150. A one-way locking portion 161 is provided on the side of the first limiting member 160 facing the adjustment gear 130;

[0039] Among them, the first limit member 160 has a locking position and an unlocking position that can be switched with each other. In the locking position, the one-way locking portion 161 is engaged with the adjusting gear 130 so that the adjusting gear 130 can only rotate in the direction of loosening the two straps; in the unlocking position, the one-way locking portion 161 is disengaged from the adjusting gear 130.

[0040] 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 and are fixed to the head. The adjustment rack 110 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 the adjustment rack 110, and the adjustment rack 110 is at least partially movably provided in the rear head-mounted shell 120 and meshed with the adjustment gear 130, so as to adjust the overlap distance of the two straps, that is, 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 locking structure 140 is also installed in the rear head-mounted shell 120. The locking structure 140 is installed on one side of the adjustment gear 130 and directly acts on the adjustment gear 130, so that the one-way locking portion 161 is meshed with the adjustment gear 130, so that the adjustment gear 130 can only rotate in the direction of loosening the two straps, that is, rotate in the direction of reducing the overlap distance of the two straps (temporarily, the rotation of the adjustment gear 130 in this direction is referred to as forward rotation, and the opposite direction is referred to as reverse rotation, which are referred to as reverse rotation and forward rotation in the subsequent description) but cannot rotate in the reverse direction. When the user needs to adjust the head-mounted device, he only needs to pull the strap to move the adjustment rack 110, thereby driving the adjustment gear 130 to rotate. And due to the restriction of the one-way locking portion 161 on the adjustment gear 130, the adjustment gear 130 can stop when it rotates to any angle, thereby improving the adjustment accuracy of the head-mounted adjustment device 100. The adjustment gear 130 and the adjustment rack 110 can be locked only by sliding the first limiter 160 between the locking position and the unlocking position, which has a simple structure, convenient operation, and improves the user experience. The locking structure 140 is located on one side of the adjustment gear 130 and between the two straps, which occupies a small space and hardly increases the overall volume of the rear head-mounted body, meeting the development trend of miniaturization and lightweight of future head-mounted devices.

[0041] Among them, one of the first limiting member 160 and the mounting seat 150 is provided with a guide groove 162, and the other is provided with a guide protrusion 151, and the guide protrusion 151 slides along the extension direction of the guide groove 162, thereby limiting the sliding position of the first limiting member 160 relative to the mounting seat 150. The mounting seat 150 is fixed to the rear headband shell 120. In this embodiment, the mounting seat 150 is integrally formed with the rear headband body. Of course, in other embodiments, the mounting seat 150 can also be fixed to the rear headband shell 120 by bonding or clamping.

[0042] The technical solution of the present invention is to install the adjustment rack 110 by rotating it inside the rear head-mounted shell 120, and the adjustment rack 110 is at least partially movably arranged in the rear head-mounted shell 120 and meshed with the adjustment gear 130; the locking structure 140 is installed in the rear head-mounted shell 120 and is located on one side of the adjustment gear 130, and the locking structure 140 includes a mounting seat 150 and a first limiting member 160, the mounting seat 150 is fixed to the rear head-mounted shell 120, the first limiting member 160 is slidably installed on the mounting seat 150, and the first limiting member 160 is provided with a one-way locking portion 161 on the side facing the adjustment gear 130. Among them, the first limiting member 160 has a locking position and an unlocking position that can be switched with each other. In the locking position, the one-way locking portion 161 meshes with the adjustment gear 130, so that the adjustment gear 130 can only rotate in the direction of loosening the two straps; in the unlocking position, the one-way locking portion 161 is separated from the adjustment gear 130. When the user needs to adjust the head-mounted device, he only needs to pull the strap to move the adjustment rack 110, thereby driving the adjustment gear 130 to rotate. And because the one-way locking portion 161 restricts the adjustment gear 130, the adjustment gear 130 can stop when rotating at any angle, thereby improving the adjustment accuracy of the head-mounted adjustment device 100. And the locking of the adjustment gear 130 and the adjustment rack 110 can be achieved only by sliding the first limiter 160 between the locking position and the unlocking position. The structure is simple, the operation is convenient, and the user experience is improved. The locking structure 140 is located on one side of the adjustment gear 130 and between the two straps, which occupies a small space and hardly increases the overall volume of the rear head-mounted body, meeting the development trend of miniaturization and lightweight of future head-mounted devices.

[0043] Furthermore, the end of the one-way locking portion 161 close to the adjusting gear 130 has two angles 163 arranged opposite to each other, one of the two angles 163 is an obtuse angle, and the other is an acute angle or a right angle. Specifically, one of the two angles 163 is an obtuse angle, so that the one-way locking portion 161 can smoothly mesh with the adjusting gear 130, ensuring that the adjusting gear 130 can mesh with the obtuse angle and rotate, and the other is an acute angle or a right angle, so that the acute angle can clamp the adjusting gear 130, thereby limiting the rotation of the adjusting gear 130, thereby achieving one-way locking that the adjusting gear 130 can only rotate in the direction of loosening the two straps.

[0044] Furthermore, a first elastic member 141 is provided between the mounting seat 150 and the first stopper 160, so that the first stopper 160 has an elastic force to slide toward the locked position. Specifically, one end of the first elastic member 141 abuts against the mounting seat 150, and the other end abuts against the first stopper 160, so that the first stopper 160 has an elastic force to slide toward the locked position. When the first stopper 160 is located at the locked position, the adjusting gear 130 is meshed and rotated with the one-way locking portion 161, and during the rotation process, the adjusting gear 130 will push the first stopper 160 to move in a direction close to the unlocking position, and the first elastic member 141 is compressed, and then the first elastic member 141 releases energy in time, pushing the first stopper 160 to quickly reset and snap into the next tooth position. Thereby improving the smoothness of the coordinated movement of the adjusting gear 130 and the first stopper 160. In this embodiment, the first elastic member 141 is configured as a compression spring, and in other embodiments, the first elastic member 141 can also be a structure such as an elastic block.

[0045] Reference Figure 1 , Figure 2 and Figure 4 In one embodiment, the first limiting member 160 is provided with a first limiting portion 164 on one side facing the adjustment rack 110, and the first limiting convex portion 111 is provided at the end of the corresponding adjustment rack 110 away from the head-mounted body, and the first limiting convex portion 111 is used to press against the first limiting portion 164 to move the first limiting member 160 from the locked position to the unlocked position. Specifically, the first limiting convex portion 111 is provided at the end of the adjustment rack 110 away from the head-mounted body, so that when the two straps move toward each other to the extreme position, the first limiting convex portion 111 presses against the first limiting portion 164, thereby pushing the first limiting member 160 from the locked position to the unlocked position, thereby releasing the restriction of the one-way locking portion 161 on the adjustment gear 130, so that the adjustment gear 130 can rotate in the opposite direction, thereby pushing the two straps to rotate in the direction of tightening each other, thereby storing the first limiting member 160.

[0046] Furthermore, the adjustment gear 130 is rotatably installed in the rear head-mounted shell 120 through the rotating shaft 121, and a reset member 131 is provided between the adjustment gear 130 and the rotating shaft 121, and the reset member 131 makes the adjustment gear 130 have a tendency to rotate in the direction of tightening the two straps. Specifically, the reset member 131 makes the adjustment gear 130 have a tendency to rotate in the direction of tightening the two straps, so that when the first limiting protrusion 111 releases the restriction of the one-way locking portion 161 on the adjustment gear 130, the adjustment gear 130 automatically rotates in the opposite direction, thereby completing the storage of the head-mounted device. In this embodiment, the reset member 131 is configured as a memory spring. During the movement of the two straps in opposite directions, as the adjustment gear 130 rotates, the memory spring is continuously compressed to store energy. After the restriction on the adjustment gear 130 is released, the energy of the memory spring is released, thereby completing the storage of the head-mounted device. The head-mounted device can be adjusted in size by directly pulling the straps. When storing, the head-mounted device can be automatically stored by simply pulling the straps back and forth to the extreme position. After use, there is no need to manually turn gears and other buttons, which avoids the user placing their hands behind the head for blind operation, thereby improving the user experience.

[0047] To ensure that the first stopper 160 is fixed in the unlocked position and the adjusting gear 130 can smoothly rotate in the reverse direction, refer to Figures 1 to 5 In one embodiment, the locking structure 140 further includes a guide shaft 170, a guide ring groove 152 is provided on the mounting seat 150, one end of the guide shaft 170 is movably mounted on the first stopper 160, and the other end is inserted into the guide ring groove 152, and slides back and forth in the guide ring groove 152 along with the movement of the first stopper 160, and a first step 153 is provided in the guide ring groove 152;

[0048] At the unlocking position, the first step 153 limits the sliding of the guide shaft 170 to limit the first limiting member 160 from moving from the unlocking position to the locking position.

[0049] Specifically, the guide shaft 170 slides back and forth in the guide ring groove 152 along with the movement of the first stopper 160. When the adjustment gear 130 rotates in the forward direction, the end of the guide shaft 170 reciprocates in the guide ring groove 152 from the end close to the first stopper 160 to the end away from the first stopper 160. In order to adapt to the shape of the guide ring groove 152, one end of the guide shaft 170 can be movably mounted on the first stopper 160. When the first stopper convex portion 111 pushes the first stopper 160 to move from the locked position to the unlocked position, the end of the guide shaft 170 is stuck in the first step 153. The first step 153 restricts the guide shaft 170 from moving toward the end of the guide ring groove 152 close to the first stopper 160, so that the guide shaft 170 pulls the first stopper 160 tightly, so that it is locked in the unlocked position, so that the head-mounted device is completely stored.

[0050] In order to release the first step 153 from limiting the first position limiting member 160, in one embodiment, a second position limiting member 180 is slidably mounted on the mounting seat 150. The second position limiting member 180 is located at one end close to the first step 153 and is used to release the first step 153 from limiting the first position limiting member 160. Specifically, the second position limiting member 180 can release the first step 153 from limiting the first position limiting member 160 by allowing the guide shaft 170 to bypass or cross the first step 153, so that the first position limiting member 160 smoothly returns from the unlocking position to the locking position. The first position limiting member 160 can be lifted upward by pushing the end of the guide shaft 170 located in the guide ring groove 152 to cross the first step 153, or by pushing the guide shaft 170 to move away from the first step 153, that is, reset from the other side of the guide ring groove 152, so as to bypass the first step 153.

[0051] In one embodiment, referring to Figure 5 A second limiting portion 181 is provided on the side of the second limiting member 180 facing the adjustment rack 110, and a second limiting protrusion 112 is provided on the corresponding end of the adjustment rack 110 close to the head-mounted body. The second limiting protrusion 112 presses against the second limiting portion 181, so that the second limiting member 180 releases the limitation of the first step 153 on the first limiting member 160. Specifically, after the head-mounted device is stored, in order to ensure that the first limiting member 160 returns to the locked position in time to ensure smooth adjustment of the head-mounted device again, the adjustment rack 110 has a second limiting protrusion 112 at one end close to the head-mounted body. The second limiting protrusion 112 presses against the second limiting portion 181, so that the second limiting protrusion 112 pushes the second limiting member 180, and then pushes the guide shaft 170 to move away from the first step 153, that is, reset from the other side of the guide ring groove 152, thereby bypassing the first step 153 and releasing the limiting position of the first step 153 on the first limiting member 160.

[0052] In one embodiment, the second position-limiting portion 181 has a guiding inclined surface 182 facing the second position-limiting protrusion 112, so that the second position-limiting protrusion 112 pushes the second position-limiting member 180 to move in the direction of the guide annular groove 152. Specifically, the guiding inclined surface 182 can change the direction of the force exerted by the second position-limiting protrusion 112 on the second position-limiting member 180, and guide the movement of the second position-limiting member 180, so that the second position-limiting member 180 is converted from the movement of the second position-limiting member 180 relative to the extending direction of the adjustment rack 110 to the movement of the second position-limiting member 180 in the direction of the guide annular groove 152 pushed by the second position-limiting protrusion 112.

[0053] Furthermore, a second elastic member 142 is provided between the second position-limiting member 180 and the mounting seat 150, and the second elastic member 142 makes the second position-limiting member 180 have a tendency to move toward the adjustment rack 110. Specifically, one end of the second elastic member 142 is connected to the second position-limiting member 180, and the other end is connected to the mounting seat 150, so as to push the second position-limiting member 180 to reset in time, thereby reducing the possibility that the second position-limiting member 180 affects the guide shaft 170. Among them, one of the second position-limiting member 180 and the mounting seat 150 is provided with a guide groove 162, and the other is provided with a guide protrusion 151, and the guide protrusion 151 slides along the extension direction of the guide groove 162, so as to limit the sliding of the second position-limiting member 180 relative to the mounting seat 150. In this embodiment, the second elastic member 142 is configured as a compression spring, and in other embodiments, the second elastic member 142 can also be a structure such as an elastic block.

[0054] Reference Figure 2 and Figure 3 In one embodiment, the guide ring groove 152 includes a first guide groove 154 and a second guide groove 155 connected to each other. The second guide groove 155 has a first guide section 156 away from the first stopper 160. The depth of the first guide section 156 is greater than the depth of the first guide groove 154 to form a first step 153. The second stopper 180 pushes the guide shaft 170 to slide in the second guide groove 155. Specifically, during the positive rotation of the adjustment gear 130, the end of the guide shaft 170 reciprocates in the first guide groove 154; when the first stopper 160 moves to the unlocking position, the end of the guide shaft 170 moves from the first guide groove 154 to the second guide groove 155. The second guide groove 155 has a first guide section 156 away from the first stopper 160. The depth of the first guide section 156 is greater than the depth of the first guide groove 154, that is, the first guide groove 154 is higher than the first guide section 156 to form a first step 153, thereby limiting the guide shaft 170 from moving into the first guide groove 154 again. And because the connection between the first guide groove 154 and the second guide groove 155 is located at the end away from the first stopper 160, and because of the annular transition of the guide ring groove 152 at the end away from the first stopper 160, the end of the guide shaft 170 cannot slide directly in the second guide groove 155, so the first stopper 160 is fixed in the unlocking position, and then the end of the guide shaft 170 bypasses the annular transition at the end away from the first stopper 160 through the push of the second stopper 180, so as to smoothly return to the locking position. And to further ensure that the first stopper 160 is fixed in the unlocking position, preferably, the first guide groove 154 ends before the end of the guide ring groove 152 away from the first stopper 160.

[0055] Furthermore, the second guide groove 155 also has a second guide section 157 close to the first stopper 160, the depth of the second guide section 157 is less than the depth of the first guide groove 154, so as to form a second step 158, which limits the movement direction of the guide shaft 170, and the first guide section 156 is connected with the second guide section 157 by a curved transition. Specifically, the depth of the second guide section 157 is less than the depth of the first guide groove 154, that is, the second guide section 157 is higher than the first guide groove 154, so as to form a second step 158, which limits the movement direction of the guide shaft 170, so that during the forward rotation of the adjustment gear 130, the end of the guide shaft 170 can only reciprocate in the first guide groove 154. Due to the limiting effect of the first step 153 and the second step 158, the guide shaft 170 can only slide from the second guide groove 155 to the first guide groove 154 at the end close to the first limit; and can only slide from the first guide groove 154 to the second guide groove 155 at the end away from the first limit, thereby limiting the movement direction of the guide groove and ensuring the smooth operation of the locking structure 140. The first guide section 156 and the second guide section 157 are connected by a curved surface transition, thereby ensuring that the guide shaft 170 can slide smoothly in the second guide groove 155. In order to ensure that the end of the guide shaft 170 moves smoothly from the second guide groove 155 back to the first guide groove 154, preferably, the second guide groove 155 ends before the end of the guide ring groove 152 close to the first limit member 160.

[0056] The present invention also provides a head-mounted device, which includes a head-mounted body, a rear head-mounted body, and a head-mounted adjustment device 100. The specific structure of the head-mounted adjustment device 100 refers to the above embodiment. Since the head-mounted device adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here. Among them, the head-mounted adjustment device 100 is arranged on the rear head-mounted body.

[0057] 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 device 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: include: An adjustment rack, provided at one end of the strap away from the head-mounted body; A rear head-mounted shell, wherein an adjustment gear is rotatably mounted in the rear head-mounted shell, and the adjustment rack is at least partially movably arranged in the rear head-mounted shell and meshes with the adjustment gear; as well as The locking structure is installed in the rear head-mounted shell and is located on one side of the adjustment gear, and includes: A mounting seat and a first limiting member, wherein the mounting seat is fixed to the rear headband shell, the first limiting member is slidably mounted on the mounting seat, and a one-way locking portion is provided on a side of the first limiting member facing the adjusting gear; Wherein, the first limit member has a locking position and an unlocking position that can be switched to each other. In the locking position, the one-way locking portion is engaged with the adjusting gear so that the adjusting gear can only rotate in the direction of loosening the two straps; in the unlocking position, the one-way locking portion is disengaged from the adjusting gear; A first limiting portion is provided on a side of the first limiting member facing the adjustment rack, and a first limiting protrusion is provided at an end of the adjustment rack away from the head-mounted body, wherein the first limiting protrusion is used to press against the first limiting portion to move the first limiting member from the locked position to the unlocked position.

2. The head-mounted adjustment device according to claim 1, characterized in that: The end of the one-way locking portion close to the adjusting gear has two angles arranged opposite to each other, one of the two angles is an obtuse angle, and the other is an acute angle or a right angle.

3. The head-mounted adjustment device according to claim 2, characterized in that: A first elastic member is provided between the mounting seat and the first limiting member, so that the first limiting member has an elastic force to slide toward the locking position.

4. The head-mounted adjustment device according to claim 1, characterized in that: The locking structure further includes a guide shaft, a guide ring groove is provided on the mounting seat, one end of the guide shaft is movably mounted on the first stopper, and the other end is inserted into the guide ring groove and reciprocates and slides in the guide ring groove along with the movement of the first stopper, and a first step is provided in the guide ring groove; At the unlocking position, the first step limits the sliding of the guide shaft to limit the first limiting member from moving from the unlocking position to the locking position.

5. The head-mounted adjustment device according to claim 4, characterized in that: A second limiting member is slidably mounted on the mounting seat. The second limiting member is located at an end close to the first step and is used to release the first step from limiting the first limiting member.

6. The head-mounted adjustment device according to claim 5, characterized in that: The second limiting member is provided with a second limiting portion on a side facing the adjustment rack, and a second limiting protrusion is provided at an end of the adjustment rack close to the head-mounted body, and the second limiting protrusion presses against the second limiting portion, so that the second limiting member releases the limitation of the first step on the first limiting member.

7. The head-mounted adjustment device according to claim 6, characterized in that: The second limiting portion has a guiding inclined surface facing the second limiting protrusion, so that the second limiting protrusion pushes the second limiting member to move in the direction of the guiding ring groove.

8. The head-mounted adjustment device according to claim 5, characterized in that: A second elastic member is provided between the second limiting member and the mounting seat, and the second elastic member enables the second limiting member to have a tendency to move toward the adjusting rack.

9. The head-mounted adjustment device according to claim 5, characterized in that: The guide ring groove includes a first guide groove and a second guide groove which are connected to each other. The second guide groove has a first guide section away from the first limiting member. The depth of the first guide section is greater than the depth of the first guide groove to form the first step. The second limiting member pushes the guide shaft to slide in the second guide groove.

10. The head-mounted adjustment device according to claim 9, characterized in that: The second guide groove also has a second guide section close to the first limiting member, the depth of the second guide section is less than the depth of the first guide groove to form a second step to limit the movement direction of the guide shaft, and the first guide section is connected to the second guide section by a curved surface transition.

11. The head-mounted adjustment device according to claim 1, characterized in that: The adjusting gear is rotatably installed in the rear head-mounted shell through a rotating shaft, and a reset member is arranged between the adjusting gear and the rotating shaft, and the reset member enables the adjusting gear to have a tendency to rotate in a direction to tighten the two straps.

12. A head mounted device, characterized in that: It comprises a head-mounted body, a rear head-mounted body and a head-mounted adjustment device as described in any one of claims 1 to 11, wherein the head-mounted adjustment device is arranged on the rear head-mounted body.

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