Fixed strap adjustment mechanism and wearable device

Abstract

An embodiment of the present invention provides a fixing belt adjusting mechanism and a wearable device. The fixing belt adjusting mechanism includes a fixing base, a ratchet wheel, a driving member, a knob, a reset member, and a transmission wheel. Among them, the ratchet wheel, the driving member, and the knob are rotatably arranged on the fixing base. By rotating the knob, the driving member can be rotated, so that the pawl drives the ratchet wheel to rotate in the first direction. At the same time, both ends of the reset member are respectively connected to the fixing base and the ratchet wheel, so that the ratchet wheel can be driven to rotate and reset in the second direction. In addition, the transmission wheel coaxially and fixedly connected to the ratchet wheel can drive the first fixing belt and the second fixing belt to move towards each other or away from each other by rotation. Thus, the fixing belt adjusting mechanism can achieve the effect of synchronously adjusting two fixing belts by using a simple structure, which helps to improve the user experience.

Description

Technical Field

[0001] The present invention relates to the field of wearable technologies, and particularly to a fixing band adjusting mechanism and a wearable device. Background Art

[0002] Currently, when adjusting the tightness of some wearable electronic products on the market, the situation of one end being loose and the other end being tight often occurs, resulting in the problem of insecure wearing. As the usage time increases, the electronic products are prone to becoming loose and falling off, affecting the user experience. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to provide a fixing band adjusting mechanism and a wearable device. By setting a ratchet wheel and a driving member, and using a knob and a reset member to cooperate with a transmission wheel, the effect of synchronously adjusting two fixing bands is achieved.

[0004] In a first aspect, an embodiment of the present invention provides a fixing band adjusting mechanism, which includes:

[0005] A fixed seat;

[0006] A ratchet wheel, which is rotatably arranged on the fixed seat;

[0007] A driving member, on which a pawl cooperating with the ratchet wheel is provided, and the driving member is rotatably arranged on the fixed seat;

[0008] A knob, which is rotatably arranged on the fixed seat and is configured to drive the driving member to rotate, so that the pawl drives the ratchet wheel to rotate in a first direction;

[0009] A reset member, whose two ends are respectively connected to the fixed seat and the ratchet wheel, and is configured to drive the ratchet wheel to rotate and reset in a second direction; and

[0010] A transmission wheel, which is coaxially and fixedly connected to the ratchet wheel and is used to drive the first fixing band and the second fixing band to move towards or away from each other by rotation.

[0011] Further, the fixing band adjusting mechanism further includes:

[0012] A fastening assembly, which is arranged on the fixed seat and connects the knob for fastening the knob.

[0013] Further, the fastening assembly includes:

[0014] A fixing bolt, which is fixedly arranged on the fixed seat, the top end of the fixing bolt is rotatably connected to the knob, and the bottom end of the fixing bolt has a flange; and

[0015] A fastening spring is sleeved on the fixing bolt, and two ends of the fastening spring are respectively abutted against the fixing seat and the flange.

[0016] Further, the fixing bolt includes a main body portion and a connecting portion extending from the top end of the main body portion towards the knob;

[0017] The fastening spring is sleeved on the main body portion;

[0018] The flange is located at the bottom end of the main body portion;

[0019] The fixing bolt is rotationally connected to the knob through the connecting portion.

[0020] Further, a force-receiving portion is provided on the driving member;

[0021] A pushing portion is provided on the knob, and the knob is configured to push the force-receiving portion to rotate along the first direction through the pushing portion.

[0022] Further, a lifting portion is provided on the knob, and the knob is configured to lift the ratchet pawl through the lifting portion so that the ratchet pawl is disengaged from the ratchet wheel.

[0023] Further, the reset member is a coil spring, and two ends of the coil spring are respectively connected to the fixing seat and the ratchet wheel.

[0024] Further, a groove is provided on the ratchet wheel, and a first protrusion is formed at the bottom of the groove;

[0025] The coil spring is arranged in the groove, and a first end of the coil spring is connected to the first protrusion.

[0026] Further, a second protrusion is provided on the fixing seat;

[0027] The ratchet wheel is sleeved on the second protrusion so that the second protrusion is located in the groove;

[0028] A second end of the coil spring is connected to the second protrusion.

[0029] In a second aspect, an embodiment of the present invention further provides a wearable device, and the wearable device includes:

[0030] A fixing belt adjusting mechanism as described in the first aspect; and

[0031] A first fixing belt and a second fixing belt, and the first fixing belt and the second fixing belt are configured to be in transmission connection with the transmission wheel in opposite directions.

[0032] An embodiment of the present invention provides a fixing belt adjusting mechanism and a wearable device. The fixing belt adjusting mechanism includes a fixed seat, a ratchet wheel, a driving member, a knob, a reset member, and a transmission wheel. Among them, the ratchet wheel, the driving member, and the knob are rotatably arranged on the fixed seat. By rotating the knob, the driving member can be rotated, so that the pawl drives the ratchet wheel to rotate in the first direction. At the same time, both ends of the reset member are respectively connected to the fixed seat and the ratchet wheel, so that the ratchet wheel can be driven to rotate and reset in the second direction. In addition, the transmission wheel coaxially and fixedly connected to the ratchet wheel can drive the first fixing belt and the second fixing belt to move towards each other or away from each other by rotation. Thus, the fixing belt adjusting mechanism can achieve the effect of synchronously adjusting two fixing belts by using a simple structure, which helps to improve the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Through the following description of the embodiments of the present invention with reference to the drawings, the above and other objects, features, and advantages of the present invention will become clearer. In the drawings:

[0034] Figure 1 is a schematic structural diagram of a wearable device provided by an embodiment of the present invention;

[0035] Figure 2 is a schematic structural diagram of another perspective of a wearable device provided by an embodiment of the present invention;

[0036] Figure 3 is a schematic structural diagram of a fixing belt adjusting mechanism provided by an embodiment of the present invention;

[0037] Figure 4 is a schematic structural diagram of another perspective of a fixing belt adjusting mechanism provided by an embodiment of the present invention;

[0038] Figure 5 is a schematic cross-sectional view of a fixing belt adjusting mechanism provided by an embodiment of the present invention;

[0039] Figure 6 is a schematic cross-sectional view of another perspective of a fixing belt adjusting mechanism provided by an embodiment of the present invention;

[0040] Figure 7 is an exploded structural diagram of a fixing belt adjusting mechanism provided by an embodiment of the present invention;

[0041] Figure 8 is a schematic structural diagram of a ratchet wheel and a transmission wheel provided by an embodiment of the present invention;

[0042] Figure 9 is a schematic structural diagram of a fixing bolt provided by an embodiment of the present invention;

[0043] Figure 10 is a schematic structural diagram of a knob provided by an embodiment of the present invention;

[0044] Figure 11 is a schematic structural diagram of a driving member provided by an embodiment of the present invention;

[0045] Figure 12 is a schematic structural diagram of a reset member provided by an embodiment of the present invention;

[0046] Figure 13 is a schematic structural diagram of a ratchet provided by an embodiment of the present invention;

[0047] Figure 14 is a schematic structural diagram of a fixing base provided by an embodiment of the present invention;

[0048] Figure 15 is a schematic structural diagram of another perspective of the fixing base provided by an embodiment of the present invention.

[0049] Explanation of reference numerals:

[0050] 1 - fixing base; 11 - second protrusion; 12 - annular groove; 13 - leak hole structure; 2 - ratchet; 21 - groove; 22 - first protrusion; 3 - driving member; 31 - ratchet pawl; 311 - extension part; 32 - stress part; 4 - knob; 41 - pushing part; 42 - lifting part; 43 - supporting part; 44 - threaded hole; 5 - reset member; 6 - transmission wheel; 7 - fastening assembly; 71 - fixing bolt; 711 - flange; 712 - main body part; 713 - connecting part; 72 - fastening spring; A - fixing belt adjusting mechanism; B - first fixing belt; C - second fixing belt; X - first direction; Y - second direction. Detailed implementation manners

[0051] The following describes the present invention based on embodiments, but the present invention is not limited to these embodiments. In the following detailed description of the present invention, some specific details are described in detail. Those skilled in the art can fully understand the present invention without the description of these details. In order to avoid obscuring the essence of the present invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0052] In addition, those of ordinary skill in the art should understand that the drawings provided herein are for illustrative purposes only, and the drawings are not necessarily drawn to scale.

[0053] Unless the context clearly requires otherwise, words such as "including" and "comprising" in the specification should be interpreted in an inclusive sense rather than an exclusive or exhaustive sense; that is, it is the meaning of "including but not limited to".

[0054] In the description of the present invention, it should be understood that the terms "first", "second", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0055] Figure 1-2 is a schematic diagram of a wearable device provided by an embodiment of the present invention. The wearable device includes various wearable devices such as smart watches, smart glasses, and smart bracelets. As Figure 1-2 shown, the wearable device includes a first fixing band B and a second fixing band C. The user fixes and wears the wearable device on the corresponding part of the body through the first fixing band B and the second fixing band C. Since the body structures of different users are different, it is necessary to adjust the positions of the first fixing band B and the second fixing band C, that is, to adjust the tightness of the fixing bands, so that the user can wear them. Further, the wearable device further includes a fixing band adjusting mechanism A for adjusting the positions of the first fixing band B and the second fixing band C, that is, adjusting the tightness of the fixing bands. The fixing band adjusting mechanism A provided by the embodiment of the present invention can achieve the effect of synchronously adjusting the two fixing bands by using a simple structure, which helps to improve the user experience.

[0056] Figures 3-7 is a schematic diagram of the fixing band adjusting mechanism A provided by an embodiment of the present invention. As Figures 3-7 shown, the fixing band adjusting mechanism A includes a fixing seat 1, a ratchet 2, a driving member 3, a knob 4, a reset member 5, and a transmission wheel 6. Among them, the ratchet 2, the driving member 3, and the knob 4 are rotatably provided on the fixing seat 1. Further, a pawl 31 cooperating with the ratchet 2 is provided on the driving member 3. When the user rotates the knob 4 in the first direction X, the driving member 3 can be rotated in the first direction X, so that the ratchet 2 can be driven to rotate in the first direction X through the pawl 31. At the same time, both ends of the reset member 5 are respectively connected to the fixing seat 1 and the ratchet 2. Further, the transmission wheel 6 is coaxially and fixedly connected to the ratchet 2.

[0057] When the ratchet 2 rotates in the first direction X and drives the transmission wheel 6 to rotate in the first direction X, thereby driving the first fixing band B and the second fixing band C to move synchronously away from each other, the two fixing bands are in a loosened state, and the reset member 5 is deformed. When the user rotates the knob 4 in the second direction Y to remove the external force, the reset member 5 returns to its original state and causes the ratchet 2 to rotate and reset in the second direction Y, thereby driving the transmission wheel 6 to rotate in the second direction Y, and further driving the first fixing band B and the second fixing band C to move synchronously towards each other, so that the two fixing bands are in a tightened state. Thus, the user can synchronously adjust the two fixing bands by using one knob 4, which is more convenient for wearing and the user experience is improved.

[0058] In one embodiment, the first direction X is counterclockwise and the second direction Y is clockwise. As an alternative embodiment, the first direction X is clockwise and the second direction Y is counterclockwise. It is easy to understand that in order for the first fixing band B and the second fixing band C to move towards each other or away from each other synchronously, the first fixing band B and the second fixing band C need to be drivingly connected to the driving wheel 6 from opposite directions.

[0059] Figure 8 FIG. 4 is a schematic structural diagram of the ratchet wheel 2 and the driving wheel 6 provided by an embodiment of the present invention. As Figure 8 shown, in one embodiment, the driving wheel 6 and the ratchet wheel 2 are integrally formed, with a simple structure and convenient installation, which can ensure the reliability of motion transmission. As an alternative embodiment, the driving wheel 6 can be coaxially connected to the ratchet wheel 2 through a connecting rod or other structures.

[0060] In one embodiment, the fixing band adjusting mechanism A further includes a fastening assembly 7. Specifically, the fastening assembly 7 is disposed on the fixing base 1 and is connected to the knob 4. When the user rotates the knob 4 in the first direction X and then releases the knob 4, the fastening assembly 7 can play a fastening role on the knob 4. That is to say, the fastening assembly 7 can keep the ratchet wheel 2 and the driving wheel 6 stationary after rotating in the first direction X, so that the fixing band is kept in a loosened state, which is convenient for the user to wear. It is easy to understand that the fastening force generated by the fastening assembly 7 is greater than the elastic force generated after the deformation of the reset member 5, thereby preventing the ratchet wheel 2 and the driving wheel 6 from immediately rotating in the second direction Y after the user removes the external force, so as to avoid the fixing band from tightening and affecting the user's wearing.

[0061] In one embodiment, the fastening assembly 7 includes a fixing bolt 71 and a fastening spring 72. Specifically, the fixing bolt 71 is fixedly disposed on the fixing base 1 and the top end thereof is rotatably connected to the knob 4. Thus, the frictional force between the fixing bolt 71 and the knob 4 can play a fastening role on the knob 4. Further, Figure 9 FIG. 5 is a schematic structural diagram of the fixing bolt 71 provided by an embodiment of the present invention. As Figure 9 shown, the bottom end of the fixing bolt 71 has a flange 711. The fastening spring 72 is sleeved on the fixing bolt 71 and the two ends thereof are respectively abutted against the fixing base 1 and the flange 711. It should be noted that the fastening spring 72 is in a deformed state and is used to enhance the frictional force between the fixing bolt 71 and the knob 4 through the elastic force generated by the deformation, so that the knob 4 can remain stationary after rotating in the first direction X for the user to wear.

[0062] Specifically, the fixing bolt 71 includes a main body portion 712 and a connecting portion 713 extending from the top end of the main body portion 712 towards the knob 4. Further, the fastening spring 72 is sleeved on the main body portion 712, and the flange 711 is located at the bottom end of the main body portion 712. Furthermore, the fixing bolt 71 is rotatably connected to the knob 4 through the connecting portion 713.

[0063] It should be noted that, as an alternative embodiment, the fixing bolt 71 is threadedly connected to the knob 4 through the connecting portion 713. As shown in Figure 10 In the figure, external threads are provided on the connecting portion 713, and a matching threaded hole 44 is provided on the knob 4. When the connecting portion 713 is screwed into the threaded hole 44 on the knob 4, the elastic force generated by the deformation of the fastening spring 72 can increase the pressure of the threaded connection part, thereby realizing the fastening function of the fastening assembly 7 by increasing the friction force. It is easy to understand that by selecting springs of different specifications or by screwing the fixing bolt 71 into different depths, the tightness of the rotation of the knob 4 can be adjusted according to actual needs. It should be further noted that the threaded hole 44 is located at the rotation center of the knob 4. Optionally, a threaded hole is provided on the connecting portion 713, and a matching screw is provided correspondingly on the knob 4.

[0064] Figure 11 is a schematic structural diagram of the driving member 3 provided by an embodiment of the present invention. As shown in Figure 11 In one embodiment, a force-receiving portion 32 is provided on the driving member 3. Correspondingly, a pushing portion 41 is provided on the knob 4. When the user rotates the knob 4 in the first direction X, the knob 4 can push the force-receiving portion 32 in the first direction X through the pushing portion 41, so that the driving member 3 rotates in the first direction X, and then the ratchet 31 on the driving member 3 can drive the ratchet wheel 2 to rotate. It should be noted that there are three force-receiving portions 32 and pushing portions 41 in this embodiment, and they are spaced apart from each other. Thus, it can be ensured that the forces on the knob 4 and the driving member 3 are evenly distributed, which helps to improve the stability of the mechanism. Optionally, the number of the force-receiving portion 32 and the pushing portion 41 can also be set to one, two or more.

[0065] In one embodiment, the pawl 31 is disposed on the driving member 3 through the extending portion 311. Wherein, the extending portion 311 is made of an elastic material. Further, a lifting portion 42 is provided on the knob 4. When the user rotates the knob 4 in the second direction Y, the lifting portion 42 is rotated to the position of the pawl 31, so that the extending portion 311 can be deformed by further rotation, thereby the pawl 31 can be lifted to disengage from the ratchet wheel 2. Thus, the reset member 5 can return to its original state without external force, so that the ratchet wheel 2 rotates in the second direction Y, and drives the first fixing belt B and the second fixing belt C to move synchronously in opposite directions through the transmission wheel 6, so that the fixing belts enter the tightened state for the user to wear. In this embodiment, the lifting portion 42 and the pushing portion 41 are integrally formed into an L-shaped structure to simplify the structure of the knob 4.

[0066] In one embodiment, the outer edge of the ratchet wheel 2 has a rigid tooth-shaped surface, and the pawl 31 is correspondingly formed into a tooth-shaped hook structure, so that the ratchet wheel 2 can be hooked and driven to rotate. Further, a supporting portion 43 is provided on the knob 4, and the supporting portion 43 is kept at a certain distance from the lifting portion 42. When the user rotates the knob 4 in the first direction X, the lifting portion 42 disengages from the extending portion 311. When the pushing portion 41 rotates to contact the stressed portion 32, the supporting portion 43 pushes the pawl 31 into the tooth groove of the ratchet wheel 2, and the supporting portion 43 continuously supports the pawl 31 during the rotation of the knob 4 to prevent the pawl 31 from falling off and causing the mechanism to malfunction. It should be noted that the number of the supporting portions 43 is the same as the number of the pawls 31. It should be further noted that the ratchet wheel 2 in this embodiment is a toothed ratchet wheel, which can ensure the reliability of transmission; as an alternative embodiment, the ratchet wheel 2 can be a friction ratchet wheel, and the motion is transmitted through the frictional force between the ratchet wheel 2 and the pawl 31.

[0067] Figure 12 is a schematic structural view of the reset member 5 provided by the embodiment of the present invention, as Figure 12 shown, in one embodiment, the reset member 5 is a coil spring (or called a clockwork spring), and both ends of the coil spring are respectively connected to the fixed seat 1 and the ratchet wheel 2. Specifically, one end of the coil spring is fixedly arranged on the fixed seat 1. When the user rotates the knob 4 in the first direction X and drives the ratchet wheel 2 to rotate, the other end of the coil spring follows the ratchet wheel 2 to rotate, so that the coil spring generates a bending elastic deformation. When the user rotates the knob 4 in the second direction Y, since the pawl 31 is lifted to disengage from the ratchet wheel 2, the coil spring returns to its state and drives the ratchet wheel 2 to rotate in the second direction Y. It should be noted that the coil spring in this embodiment has the advantages of more energy storage and not being easily fatigued. As an alternative embodiment, the reset member 5 can be selected from other springs such as compression springs and torsion springs.

[0068] Figure 13 is a schematic structural view of the ratchet wheel 2 provided by the embodiment of the present invention, as Figure 13As shown, in one embodiment, a groove 21 is provided on the ratchet wheel 2, and a first protrusion 22 is formed at the bottom of the groove 21. Further, a coil spring is disposed within the groove 21 and has a first end connected to the first protrusion 22. Thus, when the ratchet wheel 2 rotates in the first direction X, the coil spring can be twisted via the first protrusion 22. It should be noted that in this embodiment, the number of the first protrusions 22 is four, and they are spaced apart on the bottom of the groove 21. With multiple first protrusions 22, it is convenient to dispose the coil spring and the coil spring can be disposed on different first protrusions 22 according to the required elastic force magnitude.

[0069] Figures 14-15 is a schematic diagram of the fixed seat 1 provided by an embodiment of the present invention. As Figures 14-15 shown, in one embodiment, a second protrusion 11 is provided on the fixed seat 1. Further, the ratchet wheel 2 is sleeved on the second protrusion 11, that is, the ratchet wheel 2 rotates around the second protrusion 11. Thus, the second protrusion 11 can extend into the groove 21. It should be noted that the second protrusion 11 in this embodiment is provided in a cylindrical shape, and a fixing bolt 71 can pass through the second protrusion 11 to be rotatably connected to the knob 4. Further, two slits are provided on the second protrusion 11 so that the second end of the coil spring can be wound around a partial area of the second protrusion 11 through the two slits.

[0070] In one embodiment, the knob 4 is provided as circular and a side wall is formed by the raised edge. Correspondingly, an annular groove 12 matching the side wall of the knob 4 is formed on the fixed seat 1, such that the knob 4 can be embedded in the annular groove 12. Further, a leak hole structure 13 is formed on the fixed seat 1, such that on the basis of ensuring that the transmission wheel 6 will not fall off, the fixed seat 1 can expose a part of the transmission wheel 6 and be in transmission connection with the first fixing belt B and the second fixing belt C.

[0071] By rotating the knob 4 in the first direction X in the fixed belt adjusting mechanism A provided by the embodiment of the present invention, the driving member 3 can follow the rotation, so that the ratchet wheel 2 can be driven to rotate by the pawl 31, and further, the first fixing belt B and the second fixing belt C can be synchronously moved away from each other by the rotation of the transmission wheel 6. Meanwhile, the reset member 5 undergoes elastic deformation under the rotation action of the ratchet wheel 2. Further, by rotating the knob 4 in the second direction Y, the reset member 5 can be restored to its original state, thereby driving the ratchet wheel 2 to rotate in the second direction Y, and further, the first fixing belt B and the second fixing belt C can be synchronously moved towards each other by the rotation of the transmission wheel 6. Thus, the user only needs to rotate the knob 4 in different directions to achieve the effect of synchronously adjusting the first fixing belt B and the second fixing belt C. That is to say, the user only needs to rotate the knob 4 to loosen or tighten the two fixing belts.

[0072] The wearable device provided in the embodiment of the present invention can achieve the effect of synchronously adjusting the first fixing belt B and the second fixing belt C through the fixing belt adjustment mechanism A as described above. In one embodiment, the transmission wheel 6 is configured as a gear structure, and the first fixing belt B and the second fixing belt C are correspondingly provided with racks. By meshing the racks with the transmission wheel 6 in different directions, the first fixing belt B and the second fixing belt C can be synchronously moved toward or away from each other when the transmission wheel 6 rotates. As an optional embodiment, the first fixing belt B and the second fixing belt C can be connected to the transmission wheel 6 in other ways (for example, chain drive).

[0073] The embodiment of the present invention provides a fixing strap adjustment mechanism and a wearable device, wherein the fixing strap adjustment mechanism includes a fixing seat, a ratchet, a driving member, a knob, a reset member and a transmission wheel. The ratchet, the driving member and the knob are rotatably arranged on the fixing seat, and the driving member can be rotated by the knob, so that the pawl drives the ratchet to rotate in a first direction. At the same time, the two ends of the reset member are respectively connected to the fixing seat and the ratchet, so that the ratchet can be driven to rotate and reset in a second direction. In addition, the transmission wheel coaxially fixedly connected to the ratchet can drive the first fixing strap and the second fixing strap to move toward or away from each other by rotation. Therefore, the fixing strap adjustment mechanism can achieve the effect of synchronously adjusting the two fixing straps with a simple structure, which helps to improve the user experience.

[0074] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A fixing belt adjusting mechanism, characterized in that, The fixed belt adjusting mechanism (A) includes: A fixed seat (1); A ratchet wheel (2) rotatably arranged on the fixed seat (1); A driving member (3) provided with a pawl (31) cooperating with the ratchet wheel (2), and the driving member (3) is rotatably arranged on the fixed seat (1); A knob (4) rotatably arranged on the fixed seat (1) and configured to drive the driving member (3) to rotate; A reset member (5) with both ends respectively connected to the fixed seat (1) and the ratchet wheel (2); and A transmission wheel (6) coaxially and fixedly connected to the ratchet wheel (2); Wherein, when the knob (4) rotates in the first direction (X), the driving member (3) follows to rotate, so that the pawl (31) of the driving member (3) drives the ratchet wheel (2) and the transmission wheel (6) to rotate simultaneously in the first direction (X), the transmission wheel (6) drives the first fixed belt (B) and the second fixed belt (C) to move synchronously away from each other to a loose state, and the reset member (5) is deformed; When the knob (4) rotates in the second direction (Y), the pawl (31) is lifted away from the ratchet wheel (2), so that the reset member (5) drives the ratchet wheel (2) and the transmission wheel (6) to rotate and reset simultaneously in the second direction (Y), the transmission wheel (6) drives the first fixed belt (B) and the second fixed belt (C) to move synchronously towards each other to a tightened state, and the reset member (5) returns to its original state.

2. The fixing belt adjusting mechanism according to claim 1, characterized in that, The fixed belt adjusting mechanism (A) further includes: A fastening assembly (7) arranged on the fixed seat (1) and connected to the knob (4) for fastening the knob (4).

3. The fixed belt adjusting mechanism according to claim 2, characterized in that, The fastening assembly (7) includes: A fixing bolt (71) fixedly arranged on the fixed seat (1), the top end of the fixing bolt (71) is rotatably connected to the knob (4), and the bottom end of the fixing bolt (71) has a flange (711); and A fastening spring (72) sleeved on the fixing bolt (71), with both ends of the fastening spring (72) respectively abutted against the fixed seat (1) and the flange (711).

4. The fixing belt adjusting mechanism according to claim 3, characterized in that, The fixing bolt (71) includes a main body portion (712) and a connecting portion (713) extending from the top end of the main body portion (712) towards the knob (4); The fastening spring (72) is sleeved on the main body portion (712); The flange (711) is located at the bottom end of the main body portion (712); The fixing bolt (71) is rotatably connected to the knob (4) through the connecting portion (713).

5. The fixing belt adjusting mechanism according to claim 1, characterized in that, A force-receiving portion (32) is provided on the driving member (3); A pushing portion (41) is provided on the knob (4), and the knob (4) is configured to push the force-receiving portion (32) to rotate in the first direction (X) through the pushing portion (41).

6. The fixing belt adjusting mechanism according to claim 1, wherein The knob (4) is provided with a lifting portion (42), and the knob (4) is configured to lift the pawl (31) through the lifting portion (42) to disengage from the ratchet wheel (2).

7. The fixed belt adjusting mechanism according to claim 1, characterized in that, The reset member (5) is a coil spring, and two ends of the coil spring are respectively connected to the fixed seat (1) and the ratchet wheel (2).

8. The fixing belt adjusting mechanism according to claim 7, wherein, The ratchet wheel (2) is provided with a groove (21), and a first protrusion (22) is formed at the bottom of the groove (21); The coil spring is arranged in the groove (21), and a first end of the coil spring is connected to the first protrusion (22).

9. The fixed belt adjusting mechanism according to claim 8, characterized in that, The fixed seat (1) has a second protrusion (11); The ratchet wheel (2) is sleeved on the second protrusion (11) so that the second protrusion (11) is located in the groove (21); A second end of the coil spring is connected to the second protrusion (11).

10. A wearable device, characterized in that, The wearable device includes: The fixed belt adjusting mechanism (A) according to any one of claims 1-9; and A first fixed belt (B) and a second fixed belt (C), and the first fixed belt (B) and the second fixed belt (C) are configured to be in driving connection with the driving wheel (6) in opposite directions.

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