TWM621057U - Headband adjusting mechanism and electronic device - Google Patents

Abstract

A headband adjusting mechanism is suitable for adjusting at least two headbands, and includes a housing and an adjusting knob. The shell is suitable for wearing the headband. The adjusting knob is rotatably arranged on the housing, and is at least partially contained in the housing. The adjustment knob is used to tighten and relax the headband.

Description

Headband adjusting mechanism and electronic device

This creation is about an adjustment mechanism, especially a headband adjustment mechanism and an electronic device including it.

With the advancement of technology, head-mounted devices continue to introduce new ones. Whether it is virtual reality, augmented reality, or mixed reality, the effects of immersive experiences are getting better and better. Therefore, games, media, and remote devices are gradually being widely introduced. Various applications such as on-site, retail, education, and medical care. In particular, in recent years, distance learning or work has gradually become the mainstream, which has greatly increased the demand for head-mounted devices.

Generally, in order to adapt to various head-shape sizes, the head-mounted device is generally equipped with an adjusting device at the head-wearing position, so that the user can adjust the headband to the required length by himself. However, most of the headband adjustment devices currently on the market are too large in size, and the width of the matching headband is also wider, which not only increases the size and weight of the overall device, but also easily causes the burden and discomfort of long-term use. The appearance of the entire device is cumbersome and affects consumers' desire to purchase.

In view of this, the present invention provides a headband adjustment mechanism and an electronic device including it, which helps to reduce the overall size, so as to provide a light and comfortable wearing experience and reduce the burden and discomfort of long-term use.

According to an embodiment of the present invention, a headband adjusting mechanism is suitable for adjusting at least two headbands, and includes a housing and an adjusting knob. The shell is suitable for wearing the headband. The adjusting knob is rotatably arranged in the housing, and is at least partially contained in the housing. The adjustment knob is used to tighten and relax the headband.

An electronic device disclosed according to an embodiment of the present creation includes at least two Headband and a headband adjustment mechanism. The headband adjustment mechanism includes a housing and an adjustment knob. The shell is suitable for wearing the headband. The adjusting knob is rotatably arranged in the housing, and is at least partially contained in the housing. The adjustment knob is used to tighten and relax the headband.

The headband adjusting mechanism and the electronic device of this creative embodiment are partially accommodated in the housing because the adjusting knob for tightening and loosening the headband is partially contained in the housing, thereby helping to reduce the overall thickness of the headband adjusting mechanism, thereby , It helps to lighten the overall size of the electronic device using this headband adjustment mechanism, and achieve the effects of providing a light and comfortable wearing experience and reducing the burden and discomfort of long-term use.

The above description of the disclosure of this creation and the description of the following implementation manners are used to demonstrate and explain the spirit and principle of this creation, and to provide a further explanation of the scope of patent application for this creation.

1. 1’: Headband adjustment mechanism

9: Electronic device

10: Shell

11: The first shell

12: The second shell

20, 20’: adjustment knob

21: Assemble the column

22: abutment column

30, 30’: Actuator

31: Elastic pawl

32: Gear part

33: Assembly hole

35: The first gear part

36: The second gear part

40, 40’: Stopper

41: inner ratchet

42: Piercing

43: shrapnel

50: Gasket

81~82: headband

121: accommodating space

122: Axle column

811, 821: rack part

812, 822: belt part

A1, B1, B2: Arrow

AX: shaft

O: opening

S: holding tank

W1, W2: width

FIG. 1 is a partial three-dimensional schematic diagram of an electronic device using a headband adjusting mechanism according to an embodiment of the present invention.

Fig. 2 is an exploded schematic diagram showing the headband adjusting mechanism of one embodiment of the invention.

Fig. 3 is a partial enlarged cut-away schematic diagram showing a headband adjustment mechanism of an embodiment of the present invention.

Fig. 4 is a partial enlarged schematic plan view showing the headband adjusting mechanism of an embodiment of the present invention.

Figures 5 to 6 are schematic diagrams showing the meshing of the gear part of the headband adjusting mechanism and the headband in different viewing angles according to an embodiment of the invention.

Fig. 7 is a schematic diagram showing the operation of the headband adjusting mechanism of an embodiment of the present invention.

Fig. 8 is an exploded schematic diagram showing another embodiment of the headband adjusting mechanism of the present invention.

Fig. 9 is an exploded schematic diagram showing the adjustment knob, the actuator and the stopper of the headband adjustment mechanism of Fig. 8.

Fig. 10 is a partial enlarged schematic top view showing the headband adjustment mechanism of Fig. 8.

Fig. 11 is a partial enlarged schematic side sectional view showing the headband adjustment mechanism of Fig. 8.

The following will describe the detailed features and advantages of this creation in detail by way of implementation. The content is sufficient to enable anyone who is familiar with relevant skills to understand the technical content of this creation and implement it accordingly, but does not limit the scope of this creation from any point of view.

The following embodiments will be described with drawings. For the purpose of neatness of the drawing, some conventionally used structures and components may be shown in the drawings in a simple schematic manner. In addition, some of the features in the drawings may be slightly enlarged or their scale or size may be changed to facilitate the understanding and viewing of the technical features of the creation, but this is not intended to limit the creation. In addition, for ease of viewing, some structural lines in some drawings may be represented by dashed lines.

In addition, the terms "end", "part", "part", "area", "location" and other terms may be used in the following to describe specific elements and structures or specific technical features on or between them, but these elements And structure is not limited by these terms. In the following text, terms such as "substantially", "about" and "approximately" may also be used to describe the reasonable or acceptable deviation of the modified situation or event, but the expected result can still be achieved .

In addition, “at least one” may be used in the following to describe the quantity of the indicated element, but unless explicitly stated otherwise, it should not be limited to the case where the quantity is “only one”. Hereinafter, the term "and/or" may also be used, which should be understood to include any one of the listed items and all combinations of one or more.

First of all, please refer to Figures 1 to 4. Figure 1 shows a partial three-dimensional schematic diagram of an electronic device 9 using the headband adjusting mechanism 1 of one embodiment of this creation, and Figure 2 shows an exploded schematic view of the headband adjusting mechanism 1. Series 3 shows a partial enlarged cutaway schematic view of the headband adjustment mechanism 1, and Figure 4 series shows a partial enlarged schematic plan view of the headband adjustment mechanism 1. The electronic device 9 may include the aforementioned headband adjustment mechanism 1 and one of a headband 81 connected to a headband 82 The multimedia playing module (not shown) constitutes a head-mounted display suitable for wearing on the head. The multimedia playback module can be, but is not limited to, any existing suitable display device that can provide augmented reality, virtual reality, or mixed reality experiences. The headband adjusting mechanism 1 can be used to adjust the exposed length of the headband 81 and the headband 82 (or adjust the tightness of the headband 81 and the headband 82 to the head), so that the electronic device 9 can adapt to a variety of different Head shape size, detailed description is as follows.

In this embodiment, the headband adjustment mechanism 1 may include a housing 10, an adjustment knob 20, an actuating member 30 and a stop member 40. Generally speaking, the adjusting knob 20, the actuator 30 and the stopper 40 are all contained in the housing 10, but part of the adjusting knob 20 is exposed outside the housing 10 (or, the adjusting knob 20 is at least partially contained in the housing 10) . By connecting the adjustment knob 20 and the actuating member 30, the user can adjust the length of the headband 81 and the headband 82 penetrated into the housing 10 by operating the adjustment knob 20 (that is, adjust the length of the headband 81 and the headband 82). Exposed length). In addition, the actuating member 30 and the stopping member 40 can be used to position and stop the actuating member 30 by cooperating with each other, so as to maintain the current position of the headband 81 and the headband 82.

Specifically, the housing 10 may include a first shell member 11 and a second shell member 12. The first shell member 11 and the second shell member 12 may be made of any suitable material, and may be fixed in any suitable manner. The second shell 12 can define an accommodating space 121 for accommodating the adjusting knob 20, the actuating member 30, the stopping member 40, and at least part of the headband 81 and the headband 82. In addition, the second shell member 12 of the housing 10 may also have two openings O, respectively connected to opposite ends of the accommodating space 121, so as to allow the headband 81 and the headband 82 to penetrate into the accommodating space 121 respectively.

Further, in this embodiment, the headband 81 may be, but is not limited to, an integrally formed belt or strip structure, and may include a rack portion 811 and a belt portion 812 connected to each other. The width of the rack portion 811 Smaller than the strap portion 812, it is the part of the headband 81 that is used to engage the headband adjustment mechanism 1. The strap portion 812 has a wider width and is suitable for being exposed outside the headband adjustment mechanism 1 for attachment to Head and ensure wearing comfort. The structure of the headband 82 can be It is substantially the same as or similar to the headband 81. As shown in the figure, the headband 82 can be, but is not limited to, an integrally formed belt-like or strip-like structure, and can include a rack portion 821 and a belt portion 822 that are connected to each other. The width of the strip portion 821 is smaller than that of the strap portion 822, and is the part of the headband 82 that is used to engage the headband adjusting mechanism 1. The strap portion 822 has a wider width and is suitable for being exposed outside the headband adjusting mechanism 1. Used to attach to the head and ensure wearing comfort. The strap portion 812 of the headband 81 and the strap portion 822 of the headband 82 can be respectively inserted through the opening O of the housing 10, so that the rack portion 811 and the rack portion 821 enter the accommodating space 121 and engage with the headband adjusting mechanism 1 The actuating member 30 can move relative to the headband adjusting mechanism 1 under the action of the actuating member 30.

Furthermore, the user can activate the actuator 30 by rotating the adjustment knob 20 in a specific direction, so that the headband 81 and the headband 82 move in a specific direction relative to the headband adjusting mechanism 1 to gradually reduce or increase the headband. The length of the strap 81 and the head strap 82 exposed to the outside is to adjust the tightness of the head strap 81 and the head strap 82 to adapt to the required head circumference size.

To this end, in this embodiment, the second shell member 12 of the housing 10 may be provided with a shaft 122 protruding from the accommodating space 121 and extending inwardly along a rotation axis AX. The adjusting knob 20 is rotatably sleeved on The shaft 122 can thereby rotate relative to the housing 10 around the rotating shaft AX. In addition, the surface of the adjusting knob 20 facing the second housing 12 may have a accommodating groove S for accommodating at least part of the actuator 30 and the stopper 40, and the adjusting knob 20 may also have at least one assembly post 21 and at least one abutting post 22 protruding from the surface of the adjusting knob 20 facing the second housing 12 and located in the accommodating groove S for linking the actuating member 30.

Correspondingly, in this embodiment, the actuating member 30 is rotatably sleeved on the shaft 122 and is at least partially located in the accommodating groove S of the adjusting knob 20 so as to be between the adjusting knob 20 and the second housing 12 between. The actuating member 30 can be, but is not limited to, an integrally formed structure of any suitable material, and can have at least one elastic pawl 31, a gear portion 32, and at least one assembly hole 33. The gear portion 32 can be but not limited to It is any suitable spur gear, which is rotatably sleeved on the shaft 122 and engages between the rack portion 811 of the headband 81 and the rack portion 821 of the headband 82.

Here, please refer to Figure 2 and further refer to Figures 5 to 6, which show the meshing diagrams of the gear part 32 of the headband adjusting mechanism 1 with the headband 81 and the headband 82 in different viewing angles. The rack portion 811 meshes with the rack portion 821 of the headband 82 in the direction of the rotation axis AX. In other words, the teeth of the rack portion 811 and the rack portion 821 are oriented from the headband 81 and the headband 82 The surface of the accommodating groove S of the adjusting knob 20 protrudes, so that the gear portion 32 can be overlapped with the rack portion 811 and the rack portion 821 to mesh with its teeth. Thereby, the width W1 of the rack portion 811 and the rack portion 821 can be designed to be narrow. In addition, the gear portion 32 is overlapped with the narrow rack portion 811 and the rack portion 821 at the same time, and the width W2 of the corresponding belt portion 812 and the belt portion 822 can be reduced to at least a smaller size, which helps The overall width of the headband 81 and the headband 82 is maintained at a relatively narrow degree.

Next, please refer to FIGS. 2 to 4 again. In this embodiment, the elastic pawl 31 of the actuating member 30 is swingably connected to the different side of the gear portion 32 and extends outward in different directions, so that When driven by an external force, it deforms and swings relative to the gear portion 32. The assembling hole 33 of the actuator 30 can be located on a different side of the gear portion 32, and can be, but not limited to, an arc-shaped hole whose center falls on the rotating shaft AX. The assembly post 21 of the adjustment knob 20 is respectively slidably located in the assembly hole 33, and the abutment post 22 of the adjustment knob 20 is movably located outside the elastic pawl 31, so that when the adjustment knob 20 rotates in a specific direction The elastic pawl 31 is squeezed to drive the elastic pawl 31 to bend in the direction of the rotation axis AX (as shown in the subsequent FIG. 7). The outer side of the elastic pawl 31 refers to the side of the elastic pawl 31 relatively far away from the rotating shaft AX.

In addition, in this embodiment, the stopper 40 is sleeved on the actuating member 30 and is at least partially located in the accommodating groove S of the adjusting knob 20, and the stopper 40 can be fixed to the housing 10 in any suitable manner. The second housing 12 is between the adjusting knob 20 and the second housing 12. Specifically, in this embodiment, the stopper 40 can be, but is not limited to, an integrally formed structure of any suitable material, and can have an inner ratchet 41 and a perforation 42, and the inner ratchet 41 can include a rotating shaft. AX is a plurality of one-way ratchet teeth arranged in a circle with the center of the circle, which can interact with the elastic pawl 31 of the actuator 30 without being squeezed by the abutment post 22 of the adjusting knob 20 The elastic pawl 31 is engaged with each other to prevent the actuating member 30 from rotating in a specific direction through the stop elastic pawl 31. In other words, the elastic pawl 31 is detachably engaged with the inner ratchet 41 to move in a specific direction. When rotating, it is blocked by the inner ratchet 41 and maintained at the current position. The perforation 42 corresponds to the shaft AX and can be used for the gear portion 32 of the actuator 30 to pass through, so that the gear portion 32 can pass through the stopper 40 and engage the rack portion 811 of the headband 81 and the rack of the headband 82 Department 821. In addition, in this embodiment, the headband adjustment mechanism 1 may further include a gasket 50, which can be fixed on the stopper 40 and sandwiched between the actuator 30 and the stopper 40, which can be any suitable The material is formed to moderately reduce the friction between the actuator 30 and the stopper 40 when the actuator 30 rotates, but the spacer 50 is an option and not used to limit the creation.

Next, please refer to FIG. 7 in continuation of FIGS. 4 to 6 to make the foregoing content clearer through the operation description of the headband adjusting mechanism 1. In order to adjust the exposed length of the headband 81 and the headband 82 to fit the size of the head circumference, for example, when the user wants to loosen or relax the headband 81 and the headband 82, the user can turn the adjustment knob 20 in a specific direction. (As shown by the arrow A1 in the figure), whereby the assembly post 21 of the adjustment knob 20 can slide to the other end of the assembly hole 33 of the actuator 30, and at the same time, the abutment post of the adjustment knob 20 22 will push the elastic pawl 31 of the actuator 30 with the rotation of the adjusting knob 20, so that the elastic pawl 31 is compressed and deformed in the direction of the rotation axis AX to escape the inner ratchet 41 of the stopper 40. That is to say, at this time, the actuator 30 is not restricted by the stopper 40, but can be pushed in the same direction by the assembly post 21 and the abutment post 22 of the adjustment knob 20 (as shown by the arrow A1 in the figure) Rotate. In addition, the gear portion 32 of the actuator 30 will also be driven by the adjusting knob 20 to rotate in the direction indicated by arrow A1, so that the rack portion 811 and the rack portion 821 meshed with it can be moved relatively away from each other. Drive (in the direction shown by arrows B1 and B2), so that the belt portion 812 of the headband 81 and the belt portion 822 of the headband 82 protrude more out of the housing 10 of the headband adjusting mechanism 1, so as to increase the headband 81 and The length of the headband 82 is exposed to the outside to relax the headband 81 and the headband 82.

When the headband 81 and the headband 82 are adjusted to the required length, the user can loosen the adjustment knob 20 or slightly turn the adjustment knob 20 so that the abutment post 22 of the adjustment knob 20 is detached. From the elastic pawl 31 of the actuating member 30, at that time, the elastic pawl 31 will automatically and elastically reset and return to the state of engaging the ratchet wheel 41 in the stopper 40, and the assembly post 21 of the adjusting knob 20 is still substantially in the actuating state. One end of the assembly hole 33 of the piece 30. Thereby, if the headband 81 and the headband 82 are pulled outwards during wearing or other reasons, since the inner ratchet 41 has been blocked by the stop elastic pawl 31 to stop the actuator 30, the headband 81 and the headband 82 cannot drive the actuator 30 to rotate in the direction of arrow A1, and therefore cannot move in the directions of arrows B1 and B2, that is to say, the restriction of the actuator 30 by the stopper 40 can effectively prevent the headband 81 Unexpectedly loosened after adjusting the positioning with the headband 82. Moreover, since the assembly post 21 of the adjustment knob 20 is located at one end of the assembly hole 33 of the actuator 30, the headband 81 and the headband 82 are subjected to external forces that move toward each other during wear or other reasons, the assembly post 21 One end of the stop assembly hole 33 can be used to prevent the actuating member 30 from rotating in the opposite direction as shown by the arrow A1. That is to say, the restriction of the actuating member 30 by the assembly post 21 can effectively prevent the headband 81 After adjusting the positioning with the headband 82, it moves in the tightening direction unexpectedly. It can be seen that unless the adjustment knob 20 is operated, the actuator 30 will not be affected by the rack portion 811 and the rack portion 821 and deviate from the current position, so as to ensure that the headband 81 and the headband 82 are tightly adjusted and positioned. Will not have the effect of unexpected movement.

On the other hand, when you want to shorten the exposed length of the headband 81 and the headband 82 (or, when you want to tighten the headband 81 and the headband 82), the user only needs to reverse the adjustment knob 20 to the aforementioned arrow Rotation in the direction A1 can be achieved. It is understandable that the assembly post 21 of the adjustment knob 20 pushes against one end of the assembly hole 33 of the actuator 30, thereby simultaneously rotating the actuator 30 in the same direction. , The one-way ratchet design of the inner ratchet 41 allows the elastic pawl 31 of the actuating member 30 to slide thereon, so the rotation of the actuating member 30 in this direction will not be stopped by the inner ratchet 41, in this case , The gear portion 32 of the actuator 30 can be driven by the adjusting knob 20 to also rotate in the direction opposite to the aforementioned arrow A1, so that the strap portion 812 of the headband 81 and the strap portion 822 of the headband 82 move toward the headband. The housing 10 of the adjustment mechanism 1 is housed inside to reduce the exposed length of the headband 81 and the headband 82 and tighten the headband 81 With the purpose of headband 82.

It can be seen from this that by the combination of the adjustment knob 20, the actuator 30, and the stopper 40, the user can tighten and loosen the headband 81 and the headband 82 by turning the adjustment knob 20 clockwise or counterclockwise. At the same time, it can prevent the headband 81 and the headband 82 from moving unexpectedly when the adjusting knob 20 is not operated.

Moreover, since the actuating member 30 and the stopping member 40 can both be accommodated in the accommodating groove S of the adjustment knob 20, in other words, the headband adjustment mechanism 1 is used to actuate the headband 81 and the headband 82 and prevent the headband The unintended moving components of the belt 81 and the headband 82 can be hidden inside the adjustment knob 20, thereby helping to reduce the overall thickness of the headband adjustment mechanism 1.

At the same time, the gear portion 32 of the actuating member 30 can be overlapped with the rack portion 811 and the rack portion 821 facing the surface of the accommodating groove S of the adjusting knob 20 to mesh with them, so the rack portion 811 and the rack portion 821 The width W1 can be designed to be narrow, so that the width W2 of the belt portion 812 and the belt portion 822 respectively connected to the rack portion 811 and the rack portion 821 can be reduced to at least a smaller size, so as to help make The overall width of the headband 81 and the headband 82 is maintained at a relatively narrow level, which in turn helps to make the overall device lighter.

Compared with the traditional headband adjustment knob design outside the housing, the adjustment knob 20 of this embodiment is at least partially accommodated in the housing 10, which helps to maintain the integrity of the overall appearance, and because the actuator 30 and the stopper 40 are hidden in the adjustment knob 20, so that while the overall thickness of the headband adjustment mechanism 1 is thinned, the exposed part of the adjustment knob 20 has a certain width to facilitate the user's operation.

The above is only one embodiment of this creation, but this creation is not limited to this. For example, please refer to Figures 8-11. Figure 8 shows an exploded schematic view of the headband adjustment mechanism 1'of another embodiment of the present creation. Figure 9 shows the adjustment knob 20' and the actuator 30 of the headband adjustment mechanism 1'. The exploded schematic view of'and the stopper 40', FIG. 10 is a partial enlarged schematic plan view showing the headband adjusting mechanism 1', and FIG. 11 is a partially enlarged schematic side sectional view showing the headband adjusting mechanism 1'. It should be noted that, for the purpose of brief description, only the differences between this embodiment and the foregoing embodiment are described here. Similar or identical content can be understood by referring to the aforementioned corresponding content, and the same reference numerals can be used to denote the same elements or structures.

In this embodiment, the actuating member 30' that the headband adjusting mechanism 1'may include may be integrally formed on the adjustment knob 20', and the actuating member 30' may include a first gear portion 35 and a second gear portion 36 , Can be sequentially stacked on the side of the adjustment knob 20' facing the second housing 12 along the rotation axis AX. As shown in the figure, the second gear portion 36 can be connected to the adjustment knob 20' via the first gear portion 35. The second gear portion 36 may be the same or similar to the gear portion 32 of the previous embodiment, and is a part of the actuator 30' for engaging the rack portion 811 of the headband 81 and the rack portion 821 of the headband 82. The first gear part 35 is used to cooperate with the stopper 40' to achieve the purpose of positioning and stopping the movement of the headband 81 and the headband 82.

In detail, in this embodiment, the first gear portion 35 of the actuating member 30' can be, but is not limited to, any suitable spur gear, and the stopper 40' can include at least one elastic piece 43, which can be used for engaging with the first gear portion. A tooth groove of the gear portion 35. Thereby, when the adjusting knob 20' is not operated, the actuating member 30' can be fixed in the current position via the first gear portion 35 engaging the elastic piece 43 of the stopper 40', so that the head can be moved through the second gear portion 36 The strap 81 and the head strap 82 are fixed to the current tightness. But when you want to loosen or tighten the headband 81 and the headband 82, you only need to turn the adjustment knob 20' clockwise or counterclockwise with moderate force. In the process, the adjustment knob 20' can be rotated through the actuator 30' The first gear part 35 drives the elastic piece 43 of the stopper 40' to be bent and deformed and exits the tooth groove of the first gear part 35, whereby the actuator 30' can rotate in the desired direction along with the adjustment knob 20' , So that its second gear portion 36 drives the headband 81 and the headband 82 in a desired direction. From this, it can be seen that through the combination of the adjustment knob 20', the actuator 30', and the stopper 40', the user can also tighten and relax the head by turning the adjustment knob 20' clockwise or counterclockwise. The purpose of the belt 81 and the headband 82 is to prevent the headband 81 and the headband 82 from moving unexpectedly when the adjustment knob 20' is not operated.

In summary, according to the headband adjustment mechanism disclosed in this creative embodiment, the actuator used to engage and drive the headband and the stopper used to stop the positioning actuator can both accommodate It is placed in the accommodating groove of the adjustment knob and hidden inside the adjustment knob, thereby helping to reduce the overall thickness of the headband adjustment mechanism, thereby helping to reduce the overall size of the electronic device using the headband adjustment mechanism. To achieve the effect of providing a light and comfortable wearing experience and reducing the burden and discomfort of long-term use.

Although this creation is disclosed above with the aforementioned embodiments, it is not intended to limit this creation. Without departing from the spirit and scope of this creation, all changes and modifications made are within the scope of patent protection of this creation. For the scope of protection defined by this creation, please refer to the attached scope of patent application.

1: Headband adjustment mechanism

9: Electronic device

10: Shell

20: adjustment knob

81~82: headband

Claims (20)

A headband adjusting mechanism, suitable for adjusting at least two headbands, includes: a housing suitable for the at least two headbands to pass through; and an adjustment knob rotatably arranged on the housing and at least partially accommodated in the housing In the housing, the adjusting knob is used to tighten and loosen the at least two headbands. The headband adjustment mechanism according to claim 1, further comprising an actuator and a stopper. The adjustment knob has a accommodating groove, and the actuator is at least partially accommodated in the accommodating groove and is The adjusting knob is linked to rotate relative to the housing and is used to engage and actuate the at least two headbands. The stopper is sleeved on the actuating element and is at least partially accommodated in the accommodating groove for releasably It is engaged with the actuating element to prevent the actuating element from rotating under the influence of the at least two headbands. The headband adjusting mechanism according to claim 2, wherein the actuating member and the stopping member are stacked along a rotation axis of the adjusting knob. The headband adjusting mechanism according to claim 2, wherein the actuating member includes a gear part adapted to be stacked and engaged with the rack part of the at least two headbands facing the side of the accommodating groove of the adjusting knob . The headband adjustment mechanism according to claim 2, wherein the adjustment knob further has at least one assembly post and at least one abutment post located in the accommodating groove, and the actuating member includes at least one elastic pawl and at least one assembly hole , The stopper includes an inner ratchet, the at least one assembly post is slidably located at the at least one assembly hole, the at least one abutment post is movably located outside the at least one elastic pawl, and the at least one elastic ratchet The pawl is detachably engaged with the inner ratchet, and when the adjusting knob rotates in a specific direction, the at least one abutting post squeezes and deforms the at least one elastic pawl so that the at least one elastic pawl is separated from the inner ratchet, And the at least one assembly post slides to an end of the at least one assembly hole to drive the actuating member to rotate in the specific direction. The headband adjusting mechanism according to claim 5, wherein the at least one assembly hole is an arc-shaped hole whose center is on a rotating shaft of the adjusting knob. The headband adjustment mechanism according to claim 5, wherein the inner ratchet includes a plurality of unidirectional ratchet teeth arranged in a circle with a rotating shaft of the adjustment knob as a center. The headband adjustment mechanism according to claim 2, wherein the actuator is integrally formed on the adjustment knob. The headband adjustment mechanism according to claim 8, wherein the actuating member includes a first gear portion and a second gear portion, which are sequentially stacked along a rotation axis of the adjustment knob, and the stopper is used for releasable The ground is engaged with the first gear part, and the second gear part is used to engage and actuate the at least two headbands. The headband adjusting mechanism according to claim 9, wherein the stopper includes at least one elastic piece and is releasably engaged with the first gear part. An electronic device, comprising: at least two headbands; and a headband adjusting mechanism, including: a housing suitable for passing the at least two headbands; and an adjusting knob rotatably arranged on the housing and at least partially It is contained in the shell, and the adjusting knob is used to tighten and loosen the at least two headbands. The electronic device according to claim 11, wherein the headband adjustment mechanism further includes an actuator and a stopper, the adjustment knob has a accommodating groove, and the actuator at least partially accommodates Is placed in the accommodating groove and is linked by the adjusting knob to rotate relative to the housing and is used to engage and actuate the at least two headbands; the stopper is sleeved on the actuating element and is at least partially received in the The accommodating groove is used for releasably engaging with the actuating member, so as to prevent the actuating member from rotating under the influence of the at least two headbands. The electronic device according to claim 12, wherein the actuating member and the stopping member are stacked along a rotation axis of the adjusting knob. The electronic device according to claim 12, wherein the actuating member includes a gear portion, each of the at least two headbands has a rack portion, and the gear portion is stacked on the rack portions of the at least two headbands facing toward One side of the accommodating groove of the adjusting knob is engaged with the rack parts of the at least two headbands. The electronic device according to claim 12, wherein the adjustment knob further has at least one assembly post and at least one abutment post located in the accommodating slot, the actuating member includes at least one elastic pawl and at least one assembly hole, the The stopper includes an inner ratchet, the at least one assembly post is slidably located in the at least one assembly hole, the at least one abutment post is movably located outside the at least one elastic pawl, and the at least one elastic pawl can Separately engaged with the inner ratchet, when the adjusting knob rotates in a specific direction, the at least one abutment column squeezes and deforms the at least one elastic pawl so that the at least one elastic pawl is separated from the inner ratchet, and the At least one assembly post slides to one end of the at least one assembly hole to drive the actuating member to rotate in the specific direction. The electronic device according to claim 15, wherein the at least one assembly hole is an arc-shaped hole whose center is on a rotating shaft of the adjusting knob. The electronic device according to claim 15, wherein the inner ratchet includes a plurality of unidirectional ratchet teeth arranged in a circle with a rotating shaft of the adjusting knob as a center. The electronic device according to claim 12, wherein the actuator is integrally formed on the adjustment knob. The electronic device according to claim 18, wherein the actuating member includes a first gear portion and a second gear portion, which are sequentially stacked along a rotation axis of the adjusting knob, and the stopper is used for releasably engaging Fitted to the first gear part, the second gear part is used to engage and actuate the at least two headbands. The electronic device according to claim 19, wherein the stopper includes at least one elastic piece and is releasably engaged with the first gear part.

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