Strap Adjustment Structure and Wearable Device

Abstract

This invention discloses a strap adjustment structure and a wearable device. The strap adjustment structure includes a housing, a locking member, and a knob. The housing has a rotating member and at least one movable member. The movable member is connected to one end of the strap and is driven by the rotating member to move laterally. The locking member is movably disposed on the housing towards the rotating member via an elastic member. During its movement, the locking member has a first position that restricts the rotation of the rotating member and a second position that releases the restriction. The elastic member is used to reset the locking member to the first position. The knob is rotatably disposed on the housing. During its rotation, the knob has a first rotation stroke segment and a second rotation stroke segment. During the first rotation stroke segment, the knob drives the locking member to the second position. During the second rotation stroke segment, the knob drives the rotating member to rotate. Users only need to drive the knob to unlock the rotating member and then adjust the strap tightness. The operation is simple and improves the user experience.

Description

Technical Field

[0001] This invention relates to the field of head-mounted device technology, and particularly to a strap adjustment structure and wearable device. Background Technology

[0002] Currently, the virtual reality industry is in a period of rapid growth. Users need to wear head-mounted devices to experience virtual reality. A competitive head-mounted device not only needs to be optimal in terms of performance, but also needs to consider the user experience. Many head-mounted devices on the market use a rigid strap structure to adjust the tightness of the straps to fit the user's head circumference and make it comfortable to wear. However, before adjusting the tightness of this rigid strap structure, you need to press the unlock button to unlock it, and then operate the tightness knob to adjust the tightness of the straps. This operation process is relatively cumbersome and results in a poor user experience. Summary of the Invention

[0003] The main objective of this invention is to propose a strap adjustment structure and wearable device, aiming to solve the problem that in existing head-mounted devices, users need to press an unlock button to unlock the strap before operating the tension knob to adjust the tightness, which is cumbersome and leads to a poor user experience.

[0004] To achieve the above objectives, the strap adjustment structure proposed in this invention includes:

[0005] A housing having a rotating member and at least one movable member, the rotating member being rotatably configured, and the movable member being connected to one end of a strap and being driven to the rotating member to move laterally under the drive of the rotating member;

[0006] A locking member, movably mounted on the housing towards the rotating member via an elastic member, has a first position that restricts the rotation of the rotating member and a second position that releases the restriction on the rotation of the rotating member during its movement. The elastic member is used to reset the locking member to the first position; and...

[0007] A knob is rotatably mounted on the housing. The knob has a first rotational stroke segment and a second rotational stroke segment in its rotational stroke segment. In the first rotational stroke segment, the knob drives the locking member to the second position. In the second rotational stroke segment, the knob drives the rotating member to rotate.

[0008] Optionally, the rotating component includes a gear;

[0009] The movable part has a rack portion that extends laterally, and the rack portion meshes with the gear.

[0010] Optionally, two movable parts are provided, and the rack portions on the two movable parts respectively mesh with the two sides of the gear in the radial direction.

[0011] Optionally, the locking member is movably disposed along the axial direction of the gear, and a latching protrusion is formed on the locking member facing the gear. When the locking member is in the first position, the latching protrusion can be inserted into the tooth groove of the gear, and when the locking member is in the second position, the latching protrusion can disengage from the tooth groove of the gear.

[0012] Optionally, the strap adjustment structure further includes a resistance seat and a snap-fit ​​component. The resistance seat is rotatably disposed on the housing along the same axis as the gear. The snap-fit ​​component is movably mounted on the resistance seat facing the gear, and has a third position connected to the gear and a fourth position disconnected from the gear during its active stroke.

[0013] During the first rotational stroke segment, the knob can drive the latching member to the third position; during the second rotational stroke segment, the knob can drive the resistance seat to rotate.

[0014] Optionally, the locking member and the latching member are respectively movably arranged along the axial and radial directions of the gear, and are mutually pushed against each other by inclined surfaces, so that when the latching member moves to the third position, the locking member can be pushed to the second position, and when the locking member returns to the first position, the latching member can be pushed to the fourth position.

[0015] Optionally, the latching member is movably disposed along the radial direction of the gear, and the latching member has latching teeth formed on it facing the gear. When the latching member is in the third position, the latching teeth can be engaged into the tooth groove of the gear, and when the latching member is in the fourth position, the latching teeth can disengage from the tooth groove of the gear.

[0016] Optionally, the strap adjustment structure further includes a pressing protrusion and a mating recess that cooperate with each other. One of the pressing protrusion and the mating recess is provided on the knob, and the other is provided on the snap-fit ​​member. The mating recess has two mating inclined surfaces that are opposite to each other in the circumferential direction. In the radial direction away from the gear, the two mating inclined surfaces are arranged away from each other.

[0017] During the first rotational stroke segment in the opposite circumferential direction, the knob can push the snap-fit ​​member to the third position through the pushing action of the pressing protrusion and the corresponding mating inclined surface.

[0018] Optionally, a rubber ring is provided between the resistance seat and the housing.

[0019] Optionally, a mounting post is formed on the housing, the rotating member and the knob are both rotatably disposed on the mounting post, and the locking member is axially movable on the mounting post.

[0020] Optionally, the knob is located on the side of the locking member away from the gear, and the elastic element is disposed between the knob and the locking member.

[0021] To achieve the above objectives, the wearable device proposed in this invention includes the aforementioned strap adjustment structure.

[0022] In the technical solution provided by this invention, the movable component is driven to the rotating component, thereby moving laterally under the rotational drive of the rotating component. When no external force acts on the knob, the knob is in a free state, and the elastic component can drive the locking component to return to the first position. At this time, the locking component can restrict the spontaneous rotation of the rotating component, thereby indirectly keeping the position of the strap fixed. When an external force drives the knob to rotate, the knob can first drive the locking component to move to the second position in the first rotation stroke segment, thereby releasing the locking state of the rotating component. After the knob continues to rotate to the second rotation stroke segment, the rotating component can rotate with the knob, thereby realizing the tension adjustment of the strap. During the entire adjustment process, the user only needs to operate the knob to rotate in the corresponding circumferential direction to realize the tension adjustment, which greatly simplifies the operation process and improves the user experience. Attached Figure Description

[0023] 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.

[0024] Figure 1 This is a schematic diagram of an embodiment of the strap adjustment structure provided by the present invention;

[0025] Figure 2 for Figure 1 A planar schematic diagram of section AA in the diagram;

[0026] Figure 3 for Figure 1 An exploded view of the strap adjustment structure in the diagram;

[0027] Figure 4 for Figure 3 A schematic diagram of the assembly structure of the knob, locking parts, snap-fit ​​parts and gears in the picture;

[0028] Figure 5 for Figure 4 A side view of the locking mechanism, snap-fit ​​mechanism, and gears in the diagram;

[0029] Figure 6 for Figure 4 A schematic diagram of the locking components and gears in the diagram;

[0030] Figure 7 for Figure 3 A top view of the connector, resistance seat, and gear in the diagram.

[0031] Explanation of icon numbers:

[0032] label name label name 100 Strap Adjustment Structure 3 elastic element 1 case 4 knob 11 Rotating component 41 Extrusion protrusion 111 gear 5 Resistance seat 12 Active parts 51 Guide groove 121 rack section 6 Card connector 13 Mounting column 61 tooth 14 Knob Cap 62 Match the recess 2 Locking components 621 Matching inclined plane 21 Card protrusion 7 rubber ring

[0033] 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

[0034] 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.

[0035] It should be noted that if the embodiments of the present invention involve directional indication, the directional indication is only used to explain the relative positional relationship and movement of the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0036] 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 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. If 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.

[0037] Currently, the virtual reality industry is in a period of rapid growth. Users need to wear head-mounted devices to experience virtual reality. A competitive head-mounted device not only needs to be optimal in terms of performance, but also needs to consider the user experience. Many head-mounted devices on the market use a rigid strap structure to adjust the tightness of the straps to fit the user's head circumference and make it comfortable to wear. However, before adjusting the tightness of this rigid strap structure, you need to press the unlock button to unlock it, and then operate the tightness knob to adjust the tightness of the straps. This operation process is relatively cumbersome and results in a poor user experience.

[0038] In view of this, the present invention proposes a strap adjustment structure and wearable device, aiming to solve the problem in existing head-mounted devices where users need to press an unlock button to unlock the device before adjusting the tightness of the strap using a tension knob. This cumbersome operation leads to a poor user experience. Figures 1 to 7 This is a schematic diagram of an embodiment of the strap adjustment structure provided by the present invention.

[0039] Please see Figures 1 to 3 The strap adjustment structure 100 includes a housing 1, a locking member 2, and a knob 4. The housing 1 is provided with a rotating member 11 and at least one movable member 12. The rotating member 11 is rotatably disposed, and the movable member 12 is used to connect to one end of the strap and is drively connected to the rotating member 11 so as to move laterally under the drive of the rotating member 11. The locking member 2 is movably mounted on the housing 1 towards the rotating member 11 via an elastic member 3. It has a first position that restricts the rotation of the rotating member 11 and a second position that releases the restriction on the rotation of the rotating member 11 in its movement stroke. The elastic member 3 is used to reset the locking member 2 to the first position. The knob 4 is rotatably disposed on the housing 1. The knob 4 has a first rotation stroke segment and a second rotation stroke segment in its rotation stroke. In the first rotation stroke segment, the knob 4 drives the locking member 2 to the second position. In the second rotation stroke segment, the knob 4 drives the rotating member 11 to rotate.

[0040] In the technical solution provided by this invention, the movable part 12 is connected to the rotating part 11, thereby moving laterally under the rotational drive of the rotating part 11. When no external force acts on the knob 4, the knob 4 is in a free state, and the elastic part 3 can drive the locking part 2 to return to the first position. At this time, the locking part 2 can restrict the spontaneous rotation of the rotating part 11, thereby indirectly keeping the position of the strap fixed. When an external force drives the knob 4 to rotate, the knob 4 can first drive the locking part 2 to move to the second position in the first rotation stroke segment, thereby releasing the locked state of the rotating part 11. After the knob 4 continues to rotate to the second rotation stroke segment, the rotating part 11 can rotate with the knob 4, thereby realizing the tension adjustment of the strap. During the entire adjustment process, the user only needs to operate the knob 4 with one hand to rotate it in the corresponding circumferential direction to realize the tension adjustment, which greatly simplifies the operation process and improves the user experience.

[0041] It is understandable that the transmission connection between the rotating component 11 and the movable component 12 can convert the rotation of the rotating component 11 into the lateral movement of the movable component 12. There are various forms of this transmission connection. For example, a rotating winding shaft can be used to drive the movable component 12 through a pull rope. However, in this structure, the winding shaft can only function to wind and tighten the pull rope, causing the movable component 12 to perform a single tightening or loosening motion. It requires external force or other structures to achieve the reverse movement of the movable component 12 to have practical application value. This increases the complexity of the structure and is inconvenient to use. Therefore, please refer to [link / reference needed]. Figure 2 In this embodiment, the rotating member 11 includes a gear 111; the movable member 12 has a rack portion 121 extending laterally, and the rack portion 121 meshes with the gear 111. The transmission is achieved through the meshing of the gear 111 and the rack portion 121, resulting in high transmission efficiency and bidirectional adjustment. That is, the forward and reverse rotation of the gear 111 can indirectly drive the movable member 12 to adjust its tension, resulting in a simple structure and convenient tensioning / loosening operation.

[0042] It is understood that only one set of the movable member 12 and the rack portion 121 is needed to adjust the tightness of the strap. However, in this embodiment, two movable members 12 are provided, and the rack portions 121 on the two movable members 12 respectively mesh with the two sides of the gear 111 in the radial direction. By setting the two rack portions 121 to mesh with the two sides of the gear 111 in the radial direction, when the gear 111 is rotated by the knob 4, the two movable members 12 can be moved closer or further away simultaneously, doubling the tightness adjustment range and improving the adjustment efficiency.

[0043] The locking member 2 can engage with the gear 111 in various ways. For example, it can prevent the gear 111 from rotating through frictional contact between surfaces, or it can prevent the gear 111 from rotating through the interlocking fit between the protrusion and the concave part. Furthermore, the locking member 2 only needs to be able to directly or indirectly disengage from the gear 111, and its direction of movement can vary. For details, please refer to [link / reference]. Figure 6 In this embodiment, the locking member 2 is movably disposed along the axial direction of the gear 111. The locking member 2 has a latching protrusion 21 protruding towards the gear 111. When the locking member 2 is in the first position, the latching protrusion 21 can be inserted into the tooth groove of the gear 111. When the locking member 2 is in the second position, the latching protrusion 21 can disengage from the tooth groove of the gear 111. This design fully utilizes the multiple tooth grooves on the circumference of the gear 111 itself. Locking the tooth groove can be achieved simply by inserting the latching protrusion 21 axially into one of the tooth grooves, eliminating the need to machine additional mating parts on the gear 111 for locking with the locking member 2. The structure is relatively simple and has low complexity.

[0044] In other embodiments, the locking member 2 may also be radially movable along the gear 111.

[0045] Furthermore, multiple locking protrusions 21 are provided corresponding to multiple tooth grooves of the gear 111, thereby distributing the anti-rotation force of the locking member 2 on the gear 111 to multiple locking protrusions 21, thus increasing the stability and reliability of the structure.

[0046] Since the knob 4 needs to be able to drive the gear 111 to rotate during the second rotation stroke, the connection between the knob 4 and the gear 111 must be ensured at least at the beginning of the second rotation stroke. There are many structural forms for achieving this connection; for details, please refer to [link to relevant documentation]. Figure 7In this embodiment, the strap adjustment structure 100 further includes a resistance seat 5 and a snap-fit ​​member 6. The resistance seat 5 is rotatably disposed on the housing 1 along the same axis as the gear 111. The snap-fit ​​member 6 is movably mounted on the resistance seat 5 facing the gear 111. During its active stroke, it has a third position connected to the gear 111 and a fourth position disconnected from the gear 111. During the first rotational stroke segment, the knob 4 can drive the snap-fit ​​member 6 to the third position. During the second rotational stroke segment, the knob 4 can drive the resistance seat 5 to rotate. It should be explained that there is a certain resistance between the resistance seat 5 and the housing 1. The resistance seat 5 needs to maintain static contact with the housing 1 during the first rotation stroke of the knob 4 to provide stable support for the locking member 6, allowing it to move smoothly to the third position. After the knob 4 rotates to the second rotation stroke, the resistance seat 5 and the gear 111 can rotate accordingly. It is easy to understand that the force required by the user to drive the knob 4 in the second rotation stroke is greater than the force required in the first rotation stroke. Furthermore, since the knob 4 simultaneously pushes and unlocks the locking member 2 and pushes and engages the locking member 6 during the first rotation stroke, the overall structure has good linkage. By shortening the first rotation stroke, the wearer can adjust the tightness of the strap more sensitively and efficiently.

[0047] Specifically, the resistance seat 5 has a guide groove 51 extending in the radial direction, and the snap-fit ​​member 6 is disposed in the guide groove 51, thereby achieving good positioning.

[0048] It is understandable that during the first rotational stroke of the knob 4, the movement of the latching member 6 to the third position and the movement of the locking member 2 to the second position can be driven separately by the knob 4. However, this undoubtedly increases the complexity of the structure. Therefore, please refer to [link / reference needed]. Figure 4 and Figure 5 In this embodiment, the locking member 2 and the latching member 6 are respectively movably arranged along the axial and radial directions of the gear 111, and are mutually pushed against each other by inclined surfaces. This allows the locking member 2 to be pushed to the second position when the latching member 6 moves to the third position, and the latching member 6 to be pushed to the fourth position when the locking member 2 returns to the first position. Through the mutual pushing action of the latching member 6 and the locking member 2, the knob 4 only needs to drive one of the latching member 6 or the locking member 2 during the first rotation stroke to drive the other, reducing structural complexity and increasing fault tolerance.

[0049] The connection between the snap-fit ​​member 6 and the gear 111 can take various forms. For example, the gear 111 can be rotated through frictional contact between its surfaces, or it can be rotated through an insertion fit between its protrusion and concave portion. Furthermore, the snap-fit ​​member 6 only needs to be directly or indirectly connected to the gear 111, and its direction of movement can vary. For details, please refer to [link to relevant documentation]. Figure 4 and Figure 7 In this embodiment, the snap-fit ​​member 6 is movably disposed along the radial direction of the gear 111. The snap-fit ​​member 6 has snap-fit ​​teeth 61 facing the gear 111. When the snap-fit ​​member 6 is in the third position, the snap-fit ​​teeth 61 can be engaged into the tooth grooves of the gear 111. When the snap-fit ​​member 6 is in the fourth position, the snap-fit ​​teeth 61 can disengage from the tooth grooves of the gear 111. This arrangement fully utilizes the multiple tooth grooves on the circumference of the gear 111 itself. The connection to the tooth grooves is completed simply by engaging the snap-fit ​​teeth 61 radially into the corresponding tooth grooves, eliminating the need to machine additional mating parts on the gear 111 for connection with the snap-fit ​​member 6, resulting in a simpler structure.

[0050] There are various structural forms that convert the circumferential rotation of the knob 4 into the radial movement of the locking member 6. This can be achieved through various transmission structures, or even a simple inclined plane pushing structure. However, since the combination of the rack part 121 and the gear 111 can adjust the tightness of the strap by rotating it forward and backward respectively, it is necessary to consider the forward and reverse driving of the knob 4 on the locking member 6. For details, please refer to [further details]. Figure 4 and Figure 5 In this embodiment, the strap adjustment structure 100 further includes a pressing protrusion 41 and a mating recess 62 that cooperate with each other. One of the pressing protrusion 41 and the mating recess 62 is provided on the knob 4, and the other is provided on the snap-fit ​​member 6. The mating recess 62 has two mating inclined surfaces 621 that are opposite to each other in the circumferential direction. In the radial direction away from the gear 111, the two mating inclined surfaces 621 are arranged away from each other. In the first rotation stroke segment of the opposite rotation circumferential direction, the knob 4 can push the snap-fit ​​member 6 to the third position by the pushing action of the pressing protrusion 41 and the corresponding mating inclined surface 621. By having the two mating inclined surfaces 621 positioned away from each other in a direction away from the gear 111, the pressing protrusion 41 can contact one of the mating inclined surfaces 621 during the rotation stroke of the knob 4 in any direction, thereby achieving a pushing effect on the snap-fit ​​member 6. This ensures that the forward and reverse rotation of the knob 4 can adjust the strap. Specifically, the pressing protrusion 41 is located on the knob 4, and the mating recess 62 is located on the snap-fit ​​member 6.

[0051] To ensure the stable execution of the drive of the knob 4 to the gear 111, in this embodiment, multiple sets of locking members 6 are arranged along the circumference of the gear 111. The knob 4 can synchronously drive multiple sets of locking members 6 to distribute the driving force of the knob 4 driving the gear 111, thereby improving the stability and reliability of the structure.

[0052] The resistance seat 5 needs to maintain a certain resistance with the housing 1, and also needs to be able to overcome the resistance and rotate under a larger external force. Its specific structure can vary; for example, the resistance seat 5 may include a safety coupling. However, given the complexity of the safety coupling's structure, please refer to [link / reference needed]. Figure 2 and Figure 3 In this embodiment, a rubber ring 7 is provided between the resistance seat 5 and the housing 1. The rubber ring 7 provides the required frictional resistance between the resistance seat 5 and the housing 1, resulting in a simpler structure and lower production cost.

[0053] Since the rubber ring 7 is disposed between the resistance seat 5 and the housing 1, it may increase the overall size of the structure in the axial direction. Therefore, in this embodiment, at least one of the housing 1 and the resistance seat 5 is provided with an annular groove, and the rubber ring 7 is disposed in the annular groove, thereby avoiding an increase in the overall size of the structure in the axial direction.

[0054] Since the rotating component 11, the knob 4, and the locking component 2 are all disposed in the housing 1, the housing 1 needs to provide a base for the rotating component 11 and the knob 4 to be rotatably mounted, and a mounting base for the locking component 2 to move axially. Therefore, please refer to [reference needed]. Figure 2 and Figure 3 In this embodiment, a mounting post 13 is formed on the housing 1. The rotating member 11 and the knob 4 are both rotatably mounted on the mounting post 13, and the locking member 2 is axially movable on the mounting post 13. The mounting post 13 can connect the knob 4, the gear 111, and the locking member 2 together, resulting in a more compact structure, which is beneficial to the miniaturization and lightweight design requirements of the strap adjustment structure 100.

[0055] There are multiple ways to enable the locking member 2 to move axially on the mounting post 13. In this embodiment, the mounting post 13 has an anti-rotation mounting section, which has a notch extending axially. The locking member 2 is adapted to the notch.

[0056] In order not to affect the locking contact between the locking member 2 and the rotating member 11, the knob 4 can be set in two positions, that is, on the side of the rotating member 11 away from the locking member 2, or on the side of the locking member 2 away from the gear 111. Obviously, it is easier to contact the locking member 2 by setting the knob 4 on the side of the locking member 2 away from the rotating member 11. Correspondingly, the end of the mounting post 13 is detachably provided with a knob cap 14 to prevent the knob 4 from coming off the mounting post 13.

[0057] It is understood that the elastic element 3 can be installed in two ways: either between the housing 1 and the locking element 2, or between the knob 4 and the locking element. However, since the elastic element 3 needs to pass over the rotating element 11 when it is installed between the housing 1 and the locking element 2, the structure becomes complex. Please refer to the following document for further information. Figure 2 and Figure 3 In this embodiment, the knob 4 is located on the side of the locking member 2 away from the rotating member 11, and the elastic member 3 is disposed between the knob 4 and the locking member 2. Using the knob 4 as the fulcrum of the elastic member 3 can avoid the influence of the rotating member 11 on the elastic member 3. At the same time, the elastic member 3 can be set corresponding to the center of the locking member 2, making the driving of the locking member 2 more stable.

[0058] Furthermore, to achieve the above objectives, the present invention also provides a wearable device, which includes the strap adjustment structure 100 described in the above technical solution. It should be noted that the detailed structure of the strap adjustment structure 100 of the wearable device can be referred to in the embodiments of the strap adjustment structure 100 described above, and will not be repeated here. Since the strap adjustment structure 100 is used in the wearable device of the present invention, the embodiments of the wearable device of the present invention include all the technical solutions of all embodiments of the strap adjustment structure 100, and the achieved technical effects are also completely the same, and will not be repeated here.

[0059] It is understood that the wearable devices include, but are not limited to, VR glasses, and may also include devices such as belts, wristbands and helmets that require adaptive adjustments to fit the wearer's body circumference.

[0060] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or system. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or system that includes that element.

[0061] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made under the concept of the present invention using the description and drawings 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 strap adjustment structure, characterized in that, include: A housing having a rotating member and at least one movable member, the rotating member being rotatably configured, and the movable member being connected to one end of a strap and being driven to the rotating member to move laterally under the drive of the rotating member; A locking member is movably mounted on the housing toward the rotating member via an elastic member. During its movement, it has a first position that restricts the rotation of the rotating member and a second position that releases the restriction on the rotation of the rotating member. The elastic member is used to reset the locking member to the first position. as well as, A knob is rotatably mounted on the housing. The knob has a first rotational stroke segment and a second rotational stroke segment in its rotational stroke segment. In the first rotational stroke segment, the knob drives the locking member to the second position. In the second rotational stroke segment, the knob drives the rotating member to rotate.

2. The strap adjustment structure as described in claim 1, characterized in that, The rotating component includes a gear; The movable part has a rack portion that extends laterally, and the rack portion meshes with the gear.

3. The strap adjustment structure as described in claim 2, characterized in that, Two movable parts are provided, and the rack portions on the two movable parts respectively mesh with the two sides of the gear in the radial direction.

4. The strap adjustment structure as described in claim 2, characterized in that, The locking member is movably disposed along the axial direction of the gear, and a latching protrusion is formed on the locking member facing the gear. When the locking member is in the first position, the latching protrusion can be inserted into the tooth groove of the gear. When the locking member is in the second position, the latching protrusion can disengage from the tooth groove of the gear.

5. The strap adjustment structure as described in claim 2, characterized in that, The strap adjustment structure also includes a resistance seat and a snap-fit ​​component. The resistance seat is rotatably mounted on the housing along the same axis as the gear. The snap-fit ​​component is movably mounted on the resistance seat facing the gear, and has a third position connected to the gear and a fourth position disconnected from the gear during its active stroke. During the first rotational stroke segment, the knob can drive the latching member to the third position; during the second rotational stroke segment, the knob can drive the resistance seat to rotate.

6. The strap adjustment structure as described in claim 5, characterized in that, The locking member and the latching member are respectively movably arranged along the axial and radial directions of the gear, and are mutually pushed against each other by inclined surfaces, so that when the latching member moves to the third position, the locking member can be pushed to the second position, and when the locking member returns to the first position, the latching member can be pushed to the fourth position.

7. The strap adjustment structure as described in claim 5, characterized in that, The latching member is movably disposed along the radial direction of the gear, and the latching member has latching teeth formed on it facing the gear. When the latching member is in the third position, the latching teeth can be engaged into the tooth groove of the gear. When the latching member is in the fourth position, the latching teeth can disengage from the tooth groove of the gear.

8. The strap adjustment structure as described in claim 5, characterized in that, The strap adjustment structure also includes a pressing protrusion and a mating recess that cooperate with each other. One of the pressing protrusion and the mating recess is provided on the knob, and the other is provided on the snap-fit ​​member. The mating recess has two mating inclined surfaces that are opposite to each other in the circumferential direction. In the radial direction away from the gear, the two mating inclined surfaces are arranged away from each other. During the first rotational stroke segment in the opposite circumferential direction, the knob can push the snap-fit ​​member to the third position through the pushing action of the pressing protrusion and the corresponding mating inclined surface.

9. The strap adjustment structure as described in claim 5, characterized in that, A rubber ring is provided between the resistance seat and the housing.

10. The strap adjustment structure as described in claim 1, characterized in that, A mounting post is formed on the housing, and the rotating member and the knob are both rotatably mounted on the mounting post. The locking member is axially movable on the mounting post.

11. The strap adjustment structure as described in claim 10, characterized in that, The knob is located on the side of the locking member away from the rotating member, and the elastic member is located between the knob and the locking member.

12. A wearable device, characterized in that, Includes the strap adjustment structure as described in any one of claims 1 to 11.

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