CN209627451U - An adjustable smart arm with headphones - Google Patents

Abstract

The utility model discloses an adjustable intelligent arm with an earphone, which comprises a base, a telescopic joint component, an adjustable clamp, a fixing device and an earphone arranged on the base, wherein the telescopic joint component comprises at least two joint groups, and two adjacent joint groups are connected in a rotatable way; a through hole is formed in the base, the earphone cable penetrates through the base and the telescopic joint component, the connecting plug is exposed out of the upper portion of the telescopic joint component, and the earphone cable penetrates through the through hole to enable the earplugs to be exposed out of the base; the adjustable clamp mainly comprises a lower clamping plate and an upper clamping part, the lower clamping plate is combined with the upper clamping part to form a clamping position, and an adjusting assembly is connected between the lower clamping plate and the upper clamping part. The utility model discloses intelligence arm can be fixed in on human arbitrary position, has freely stretch out and draw back, swing, rotation and rotation function, has released the support of staff to the cell-phone, makes the user obtain suitable watching, operation position and angle, and inside collection earphone, has improved the convenience of using the cell-phone.

Description

An adjustable smart arm with headphones

technical field

The utility model relates to an adjustable intelligent arm with earphones.

Background technique

Smartphones have become an indispensable item in people's lives. In addition to using mobile phones to get in touch with others, people also generally use them to watch videos, read novels, play games, and so on. When people use mobile phones to video, read novels, play games, etc., they need to hold the mobile phone for a long time, especially when going out, and they cannot find a place to place the mobile phone anytime and anywhere. After a long time of use, the arms will feel sore and tired.

Therefore, in the absence of external objects to support the mobile phone, there is no way to solve the problem of tiredness in the arms of holding the mobile phone for a long time.

In order to solve the problem of soreness in the arm of holding the mobile phone for a long time, there are many mobile phone holders on the market. However, this mobile phone holder has the following disadvantages:

(1) It needs a platform to support, which is not convenient for going out;

(2) The mobile phone cannot be clamped, and the mobile phone is easy to fall off the bracket, fall, unstable and unsafe;

(3) There is no size adjustment function, and because mobile phones of different brands and models have different sizes, the same bracket cannot meet the requirements of mobile phones of different sizes.

At the same time, when watching videos or playing games, in order not to affect the people around you, and to focus more on your mobile phone, you usually choose to wear headphones. Therefore, it is necessary to find an additional earphone to connect to the mobile phone, and sometimes the earphone cannot be used if the earphone is forgotten.

Utility model content

In view of the above deficiencies, the purpose of this utility model is to provide an adjustable smart arm with earphones, which can be fixed on any part of the human body, and has the functions of free expansion, swing, rotation and rotation, which not only releases the human hand from the mobile terminal. (Mobile phone) support eliminates the tiredness of holding the mobile terminal (mobile phone) for a long time, and enables users to obtain more suitable viewing, operating directions and angles, and earphones are stored inside, which greatly improves the user's use and The convenience of operating mobile terminals (cell phones).

The technical scheme that the utility model adopts for achieving the above object is:

An adjustable smart arm with earphones is characterized in that it includes a base, a telescopic joint assembly arranged on the base, an adjustable clamp rotatably connected to the telescopic joint assembly, and a fixed joint assembly arranged on the base. device, and an earphone set on the base, wherein the telescopic joint assembly includes at least two joint groups, and the two adjacent joint groups are rotatably connected; a through hole is opened on the base , one end of the earphone wire of the earphone runs through the base and the telescopic joint assembly in turn, so that the connecting plug of the earphone is exposed outside the upper part of the telescopic joint assembly, and the other end of the earphone wire of the earphone passes through the hole to expose the earplug of the earphone to the outside of the base; The adjustable clamp is mainly composed of a lower clamping plate and an upper clamping part arranged on the top of the lower clamping plate. The lower clamping plate and the upper clamping part are combined to form a clamping position, and the lower clamping At least one adjustment assembly is connected between the holding plate and the upper clamping part.

As a further improvement of the utility model, the two adjacent joint groups are connected through a rotating assembly, and a U-shaped relief groove is opened on the end of one of the two joint groups, and A connecting arm is formed on both sides of the U-shaped relief groove; the rotating assembly includes a pin connected between the connecting arms on both sides of the U-shaped relief groove, and a rotating connecting piece sleeved on the periphery of the pin. The connecting piece is mainly composed of an upper connecting shaft embedded in the U-shaped relief groove and sleeved on the periphery of the pin, and a connecting turntable formed on the lower end of the upper connecting shaft. The connecting turntable is rotatably connected to the other of the two joint groups. on the end of the joint group.

As a further improvement of the present utility model, the two joint groups are a lower joint group and an upper joint group rotatably connected to the upper end of the lower joint group, and the adjustable clamp is arranged on the upper joint group.

As a further improvement of the present invention, one side of the base is provided with a side card slot for the lower joint group to snap in, and a cavity penetrating to the outer surface of the base is provided in communication with the lower part of the side card slot; The lower end of the lower joint group is connected with a swing connecting piece that is movably embedded in the cavity. A connecting column is formed, and a connecting card slot for the connecting column to embed and swing is formed between the lower part of the side card slot and the cavity.

As a further improvement of the present utility model, the adjustment assembly includes an adjustment rod located between the lower clamping plate and the upper clamping part, the upper end of which is limited in the upper clamping part, a spring sleeved on the periphery of the adjustment rod, and a connecting The lower end of the adjustment rod is in contact with the lower end of the spring; an upper limit member is protruded in the lower clamping plate, which is in contact with the upper end of the spring; in the lower clamping plate, there is formed a spacer for the adjustment rod and the spring Embedded bar-shaped chute; the upper limit member is an arc-shaped protrusion arranged on the upper inner wall of the bar-shaped chute, and the arc-shaped protrusion is sleeved on the periphery of the adjustment rod and located at the upper end of the spring; the lower limit The part is a lower nut screwed on the lower end of the adjusting rod; two supporting blocks are protruded in the upper clamping part, and a card slot for the adjusting rod is formed on the two supporting blocks respectively; A limit nut and an upper nut are screwed on the adjustment rod, the limit nut is located between the two support blocks, and the upper nut is screw connected to the upper end of the adjustment rod.

As a further improvement of the utility model, a rotating chassis is provided on the end surface of the upper joint group close to the adjustable clamp, and an engaging rotating shaft engaged with the rotating chassis is protruded inside the adjustable clamp; on the rotating chassis A rear annular gear tooth is formed, and a front annular gear tooth engaged with the rear annular gear tooth is formed on the engaging shaft.

As a further improvement of the utility model, there is a strip-shaped groove on the end surface of the upper joint group close to the adjustable clamp, a stopper is arranged at the lower part of the strip-shaped groove, and a stopper connected to the A sliding bottom block of the stopper is formed with a chute on the sliding bottom block, and a strip-shaped clip is formed on both sides of the chute; One card slot.

As a further improvement of the utility model, several middle joint groups are rotatably connected between the lower joint group and the upper joint group; the upper joint group, the middle joint group and the lower joint group are telescopically connected by several joints respectively.

As a further improvement of the utility model, the fixing device is a buckle strap, a Velcro strap or a suction cup.

The beneficial effects of the utility model are:

(1) The entire smart arm can be fixed on any part of the human body through the fixing device, and at the same time, the mobile terminal (mobile phone) is clamped on the adjustable fixture. Since the adjustable fixture can rotate freely relative to the telescopic joint assembly, at the same time The telescopic joint assembly has the functions of free expansion, swing, rotation and rotation, which not only releases the support of the mobile terminal (mobile phone) by the human hand, reduces the pressure on the human arm, and eliminates the tired feeling of holding the mobile terminal (mobile phone) for a long time , and enables the user to obtain a more suitable viewing and operating orientation and angle, which is convenient for the collection and carrying of the smart arm as a whole, and greatly improves the convenience for the user to use and operate the mobile terminal (mobile phone);

(2) The length of the clamping position on the adjustable clamp can be adjusted by the adjustment component on the adjustable clamp, so as to be suitable for clamping mobile terminals (mobile phones) of different sizes and meet the needs of more users, and The mobile terminal (mobile phone) is firmly clamped and will not fall, and the mobile phone has high security;

(3) By storing the earphone cable in the smart arm, and exposing the connecting plug of the earphone cable on the outer side of the upper part of the telescopic joint assembly, it is easy to plug into the mobile terminal (mobile phone), and at the same time, the earplugs are exposed on the outer side of the base for easy use The wearer puts the earplugs in the ear, and the combined use of the earphone and the mobile terminal (mobile phone) can be realized, which brings great convenience to the use of the mobile terminal (mobile phone). Use has no effect.

The above is an overview of the technical solution of the utility model, and the utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a structural schematic diagram of the combination of the telescopic joint assembly and the adjustable clamp in the utility model;

Fig. 3 is a schematic diagram of the overall structure of the joint group composed of two joints in the utility model;

Fig. 4 is a structural schematic diagram of the combination of the base and the lower joint group in the utility model;

Fig. 5 is the structural representation of base in the utility model;

Fig. 6 is a structural schematic diagram of the smart arm in a contracted state as a whole in the utility model;

Fig. 7 is a schematic diagram of the structure of the adjustable clamp rotated to the side close to the base in the utility model;

Figure 8 is a schematic diagram of the overall structure of the adjustable clamp in the utility model;

Fig. 9 is a partial structural schematic diagram of the adjustable clamp in the utility model;

Fig. 10 is a schematic structural view of the middle and upper joint group of the present invention;

Fig. 11 is a schematic diagram of the structure of the adjustable clamp in the utility model when it is transferred to the vertical state with the upper joint group;

Figure 12 is a schematic diagram of the front structure of the utility model where the adjustable clamp is rotated to the side close to the base, and the adjustable clamp and the upper joint group are in a vertical state;

Fig. 13 is a schematic diagram of the back structure of the utility model in which the adjustable clamp is rotated to the side close to the base, and the adjustable clamp and the upper joint group are in a vertical state;

Fig. 14 is a structural schematic diagram of adding an upper earphone in the utility model.

Detailed ways

In order to further explain the technical means and effects of the utility model to achieve the predetermined purpose, the specific implementation of the utility model will be described in detail below in conjunction with the accompanying drawings and preferred embodiments.

Please refer to Fig. 1, the embodiment of the present utility model provides an adjustable smart arm with earphones, including a base 1, a telescopic joint assembly 2 arranged on the base 1, and a telescopic joint assembly 2 rotatably connected An adjustable clamp 3 and a fixing device 4 arranged on the base 1 , wherein the telescopic joint assembly 2 includes at least two joint groups 21 , and two adjacent joint groups 21 are rotatably connected.

The smart arm provided by this embodiment is tied to any part of the human body through the fixing device 4, preferably, it can be tied to the arm and can be used as the third arm of the human body; at the same time, the mobile terminal (such as a mobile phone) is clamped Set on the adjustable fixture 3, since the adjustable fixture 3 can freely rotate relative to the telescopic joint assembly 2, and the telescopic joint assembly 2 has the function of free expansion and rotation, thereby not only releasing the support of the mobile terminal by the human hand, Moreover, the user can obtain a suitable viewing and operating orientation and angle, which greatly improves the convenience for the user to use and operate the mobile terminal (mobile phone).

The specific structure of the fixing device 4 can be set according to specific needs. In this embodiment, the fixing device 4 is a buckle-type strap, a Velcro strap or a suction cup. Of course, it can also be other fixing structures. As long as the smart arm can be fixed at a certain position on the body, or be fixed/placed on other objects (for example, a table, a chair, etc.) other than the human body. For example, when the fixing device 4 is a buckle strap or a Velcro strap, as shown in FIG. 1 , the smart arm can be tied to the arm through the fixing device 4 and can be used as a third hand of a person. And when the fixing device 4 is a structure such as a suction cup or a magnet, the smart arm can be fixed on objects such as a table through the fixing device 4 .

In this embodiment, as shown in FIG. 2, the two adjacent joint groups 21 are connected through a rotating assembly 22, and a U is opened on the end of one of the two joint groups 21. U-shaped relief groove 211, and a connecting arm 212 is respectively formed on both sides of the U-shaped relief groove 211; And a rotating connector 222 sleeved on the periphery of the pin 221, the rotating connector 222 is mainly composed of an upper connecting shaft 2221 embedded in the U-shaped relief groove 211 and sleeved on the outer periphery of the pin 221, and formed on the upper connecting shaft 2221 A connecting turntable 2222 at the lower end is formed, and the connecting turntable 2222 is rotatably connected to the end of the other joint group in the two joint groups 21 .

In this embodiment, the pin 221 of the rotating assembly 22 cooperates with the rotating connecting piece 222, so that two adjacent joint groups 21 can be rotated according to specific needs. A certain angle is formed between the two adjacent joint groups 21. After the mobile phone is clamped on the adjustable clamp 3, the user can obtain a more suitable viewing and operating angle and orientation, which is convenient for the use of the mobile phone. At the same time, the connecting turntable 2222 is connected to the end of the joint group for rotation. The connecting turntable 2222 can drive the upper joint group to rotate 360°. The adjustable clamp 3 is rotated to a desired direction, as shown in FIG. 7 , and the adjustable clamp 3 is rotated to the side close to the base. At the same time, the connecting turntable 2222 in this embodiment can be retracted into the joint group 21, so that the upper joint group 21 can be retracted into the lower joint group 21 as a whole, so that the telescopic joint assembly 2 can be extended or shortened to achieve telescopic Adjusting the length of the telescopic joint assembly 2, when the telescopic joint assembly 2 shrinks to the shortest, the telescopic joint assembly 2 and the adjustable clamp 3 are stored in the base 1 as a whole, as shown in Figure 6, which is convenient when the smart arm is not in use. , The storage and carrying of the smart arm, such as putting it in a pocket or bag, requires little temporary space.

In this embodiment, the two joint groups 21 are a lower joint group 21' and an upper joint group 21" that is rotatably connected to the upper end of the lower joint group 21', and the adjustable clamp 3 is arranged on the upper joint group 21 "superior. Of course, several middle joint groups 21"' are rotationally connected between the lower joint group 21' and the upper joint group 21", as shown in Fig. 1 and Fig. 2 . Moreover, the upper joint group 21", the middle joint group 21"' and the lower joint group 21' are respectively telescopically connected by several joints 210, as shown in Figure 3, the upper joint group 21" is composed of one joint, and the middle The joint group 21"' and the lower joint group 21' are respectively composed of two joints. The telescopic connection structure between the joints 210 and the joints 210 is a conventional structure, as long as the two joints 210 can be telescopic.

In this embodiment, as shown in FIG. 4 and FIG. 5 , on one side of the base 1 , there is a side slot 11 for the lower joint group 21 ′ to snap into, and the lower part of the side slot 11 is communicated. There is a cavity 12 penetrating to the outer surface of the base 1; the lower end of the lower joint group 21' is connected with a swing connector 213 that is movably embedded in the cavity 12, and the swing connector 213 is mainly composed of a rotatably embedded in the cavity 12. The circular connecting head 2131 and a connecting post 2132 connected between the circular connecting head 2131 and the lower end of the lower joint group 21' are formed between the lower part of the side slot 11 and the cavity 12 for the connecting post 2132 to be inserted into. And a connecting card slot 13 that swings. Because the swing connecting piece 213 can move in the cavity 12, that is, the swing connecting piece 213 can swing freely in the cavity 12, usually, the lower joint group 21' is snapped into the side card slot 11, when it is necessary to swing the lower joint group 21 ′ to obtain a better viewing and operating position and angle, just swing the lower joint assembly 21 ′ outward. During the swinging process, the circular joint 2131 of the swinging connector 213 moves in the cavity 12 . It can be seen that when the smart arm shrinks to the shortest state, the upper joint group 21", the middle joint group 21"' and the adjustable clamp 3 all shrink into the lower joint group 21', and the lower joint group 21' is stored in the base 1 inside the side slot 11, as shown in Figure 6.

As shown in Fig. 8 and Fig. 9, the adjustable fixture 3 of the present embodiment is mainly composed of a lower clamping plate 31 and an upper clamping portion 32 arranged on the upper end of the lower clamping plate 31, wherein the lower clamping plate 31 is connected with the upper clamping plate 31. The clamping parts 32 are combined to form a clamping position 33 , and the mobile terminal (mobile phone 10 ) is clamped in the clamping position 33 . And because the mobile phones 10 of different brands and models have different sizes, therefore, the clamping position 33 on the adjustable clamp 3 needs to be set as an adjustable structure. Specifically, at least one adjustment assembly 34 is connected between the lower clamping plate 31 and the upper clamping portion 32 , and in this embodiment, there are two sets of adjustment assemblies 34 . Specifically, the adjustment assembly 34 includes an adjustment rod 341 located between the lower clamping plate 31 and the upper clamping part 32 and the upper end is limited in the upper clamping part 32, a spring 342 sleeved on the periphery of the adjustment rod 341, And the lower limiter 343 that is connected to the lower end of the adjustment rod 341 and resists the lower end of the spring 342. In this embodiment, the lower limiter 343 is a lower nut screwed on the lower end of the adjustment rod 341; the lower clamping plate 31 The inner protrusion is provided with an upper limit member 311 abutting against the upper end of the spring 342 . When the size of the mobile phone 10 to be clamped is relatively large, the upper clamping portion 32 can be pulled upwards to lengthen the clamping position 33 . When the upper clamping part 32 is pulled upward, the adjustment rod 341 and the lower limiter 343 are driven to move upward, and the spring 342 is compressed. After the mobile phone 10 is clamped to the clamping position 33, the pulling force on the upper clamping part 32 is released. Then, the elastic recovery force of the spring 342 exerts a downward active force on the adjusting rod 341, and then the adjusting rod 341 also exerts a downward active force on the upper clamping part 32, and then the upper clamping part 32 exerts a clamping force on the mobile phone 10. Force, so that the mobile phone 10 is firmly clamped in the clamping position 33, and will not fall.

In order to make the adjustment rod 341 of the adjustment assembly 34 move along a straight line, in the present embodiment, a bar-shaped slide groove 312 for the adjustment rod 341 and the spring 342 is formed in the lower clamping plate 31 to ensure that the adjustment rod 341 will not be biased. shift movement. At the same time, the upper limit member 311 is an arc-shaped protrusion 311' arranged on the upper inner wall of the bar-shaped chute 312. The arc-shaped protrusion 311' is sleeved on the periphery of the adjustment rod 341 and is located at the upper end of the spring 342. The arc-shaped protrusion 311' limits the upper end of the spring 342, so that the spring 342 can move within a certain range without exceeding the arc-shaped protrusion 311'.

In this embodiment, the limit of the upper end of the adjustment rod 341 is specifically that two support blocks 321 are protruded inside the upper clamping part 32, and two support blocks 321 are respectively formed for the adjustment rod 341 to engage. At the same time, a limit nut 344 and an upper nut 345 are screwed on the adjusting rod 341, the limit nut 344 is located between the two support blocks 321, and the upper nut 345 is screwed On the upper end of the adjustment rod 341.

The adjustable clamp 3 in this embodiment, in addition to the function of adjusting the length of the clamping position 33 to adapt to mobile phones 10 of different sizes, also has a rotation function to obtain a more suitable viewing and operating angle to meet the needs of different users. different needs.

Specifically, as shown in FIG. 10 , in this embodiment, a rotating chassis 214 is provided on the end surface of the upper joint group 21 ″ close to the adjustable clamp 3 , and a rotating chassis 214 is protruded inside the adjustable clamp 3 . An engaging rotating shaft 35, as shown in Fig. 8 and Fig. 9; Form a rear ring gear 2141 on this rotating chassis 214, be formed with a front ring gear meshing with rear ring gear 2141 on this engaging rotating shaft 35 Teeth 351. By the intermeshed front ring gear teeth 351 and rear ring gear teeth 2141, the adjustable clamp 3 can be rotated at any angle based on the above joint group 21", as shown in Figures 11 to 13, the adjustable clamp 3 Rotate to be perpendicular to the upper joint group 21". Specifically, when the adjustable clamp 3 is rotated, the meshing shaft 35 rotates, and the front ring gear 351 slides on the rear ring gear 2141, thereby realizing the adjustment of the adjustable clamp 3. turn.

At the same time, as shown in Figure 10, there is a strip-shaped groove on the end surface of the upper joint group 21" close to the adjustable clamp 3, a stopper 216 is arranged at the lower part of the strip-shaped groove, and a stopper 216 is arranged on the upper part of the strip-shaped groove. A sliding bottom block 217 connected to the stopper 216 is provided, and a sliding groove 2171 is formed on the sliding bottom block 217, and a bar-shaped clamping strip 2172 is formed on both sides of the sliding groove 2171; the two sides of the rotating chassis 214 A card slot 2142 is respectively formed for the bar-shaped card bar 2172 to be inserted into.

As shown in Figures 1 and 14, in this embodiment, an earphone 6 is provided on the base 1, and a via hole 11 is opened on the base 1, and one end of the earphone line 61 of the earphone 6 runs through the base 1 and the telescopic joint in turn. Assembly 2, so that the connecting plug 62 of the earphone 6 is exposed outside the upper part of the telescopic joint assembly 2, and the other end of the earphone wire 61 of the earphone 6 passes through the hole 11 to expose the earplug 63 of the earphone 6 to the outside of the base 1. In this embodiment, preferably, the upper end of the earphone wire 61 can pass through any position on the upper joint group 21 ″, so that the connecting plug 62 is exposed outside the upper joint group 21 ″, which is convenient for plugging into the mobile phone 10 . The mobile phone 10 is clamped on the adjustable clamp 3, and when it is necessary to use the earphone 6, the connecting plug 62 is directly inserted into the mobile phone 10 and gets final product.

In this embodiment, the earphone cord 61 is stored in the smart arm, and the connecting plug 62 of the earphone cord 61 is exposed outside the upper part of the telescopic joint assembly 2, so as to be easily plugged into the mobile phone 10, while the earplug 63 is exposed outside the base 1, It is convenient for the user to wear the earplug 63 in the ear, and the combined use of the earphone 6 and the mobile phone 10 can be realized, which brings great convenience to the use, and in the process of using the earphone 6, it does not have any influence on the normal use of the smart arm .

The above are only preferred embodiments of the present utility model, and are not intended to limit the technical scope of the present utility model. Therefore, other structures obtained by adopting the same or similar technical characteristics as the above-mentioned embodiments of the present utility model can be obtained. Within the protection scope of the present utility model.

Claims (9)

1. An adjustable smart arm with earphones is characterized in that it comprises a base, a telescopic joint assembly arranged on the base, an adjustable clamp that is rotatably connected to the telescopic joint assembly, and a telescopic joint assembly arranged on the base. A fixing device and an earphone set on the base, wherein the telescopic joint assembly includes at least two joint groups, and the two adjacent joint groups are rotatably connected; a Through holes, one end of the earphone cable runs through the base and the telescopic joint assembly in turn, so that the connecting plug of the earphone is exposed outside the upper part of the telescopic joint assembly, and the other end of the earphone cable passes through the via hole so that the earplugs of the earphone are exposed to the base Outside; the adjustable clamp is mainly composed of a lower clamping plate and an upper clamping part arranged on the upper end of the lower clamping plate. The lower clamping plate and the upper clamping part are combined to form a clamping position, and the At least one adjustment assembly is connected between the lower clamping plate and the upper clamping part. 2. The adjustable smart arm with earphones according to claim 1, characterized in that, the two adjacent joint groups are connected by a rotating assembly, and one of the joint groups in the two joint groups There is a U-shaped relief groove on the end, and a connecting arm is formed on both sides of the U-shaped relief groove; the rotating assembly includes a pin connected between the connecting arms on both sides of the U-shaped relief groove, and A rotating connecting piece sleeved on the periphery of the pin, the rotating connecting piece is mainly composed of an upper connecting shaft embedded in the U-shaped relief groove and sleeved on the outer periphery of the pin, and a connecting turntable formed on the lower end of the upper connecting shaft. The connecting turntable is rotatably connected to the end of the other joint group in the two joint groups. 3. The adjustable smart arm with earphones according to claim 1, wherein the two joint groups are a lower joint group and an upper joint group that is rotatably connected to the upper end of the lower joint group, the adjustable The fixture is arranged on the upper joint group. 4. The adjustable smart arm with earphones according to claim 3, characterized in that, on one side of the base, there is a side card slot for the lower joint group to snap in, and the lower part of the side card slot communicates with There is a cavity penetrating to the outer surface of the base; the lower end of the lower joint group is connected with a swing connector that is movably embedded in the cavity, and the swing connector is mainly composed of a circular connector that is movably embedded in the cavity, and connected It consists of a connecting column between the circular connecting head and the lower end of the lower joint group, and a connecting card slot for the connecting column to be embedded and swing is formed between the lower part of the side card slot and the cavity. 5. The adjustable smart arm with earphones according to claim 3, characterized in that, the adjustment assembly includes an adjustment rod located between the lower clamping plate and the upper clamping part and the upper end is limited in the upper clamping part , a spring sheathed on the periphery of the adjustment rod, and a lower limit piece connected to the lower end of the adjustment rod and in contact with the lower end of the spring; an upper limit member in contact with the upper end of the spring is protruded from the lower clamping plate; A bar-shaped chute for the adjustment rod and spring to be embedded is formed in the lower clamping plate; the upper limit member is an arc-shaped protrusion arranged on the inner wall of the upper part of the bar-shaped chute, and the arc-shaped protrusion is sleeved on the The periphery of the adjustment rod is located at the upper end of the spring; the lower limiter is a lower nut screwed on the lower end of the adjustment rod; two support blocks are protruded inside the upper clamping part, and the two support blocks are respectively A slot for the adjustment rod is formed; a limit nut and an upper nut are screwed on the adjustment rod, the limit nut is located between two support blocks, and the upper nut is screwed to the adjustment rod upper end. 6. The adjustable smart arm with earphones according to claim 3, characterized in that, a rotating chassis is arranged on the end face of the upper joint group close to the adjustable clamp, and an engaging joint is protruded in the adjustable clamp. An engaging rotating shaft on the rotating chassis; a rear annular gear tooth is formed on the rotating chassis, and a front annular gear tooth meshing with the rear annular gear tooth is formed on the engaging rotating shaft. 7. The adjustable smart arm with earphones according to claim 6, characterized in that, there is a strip-shaped groove on the end face of the upper joint group close to the adjustable clamp, and a stopper is arranged at the bottom of the strip-shaped groove A sliding bottom block connected to the stopper is provided on the upper part of the bar-shaped groove, a chute is formed on the sliding bottom block, and a strip-shaped clip is formed on both sides of the chute; the two sides of the rotating chassis The sides are respectively formed with a card slot for the bar-shaped card bar to be inserted into. 8. The adjustable smart arm with earphones according to claim 3, characterized in that, between the lower joint group and the upper joint group, several middle joint groups are rotationally connected; the upper joint group, the middle joint group The joint group and the lower joint group are respectively connected telescopically by several joints. 9 . The adjustable smart arm with earphones according to claim 1 , wherein the fixing device is a buckle strap, a Velcro strap or a suction cup.