CN209881850U - Intelligent arm capable of freely rotating and stretching - Google Patents

Abstract

The utility model discloses a flexible intelligent arm of free rotation, including a base, set up a telescopic joint subassembly on the base, rotate connect in an adjustable anchor clamps on telescopic joint subassembly and set up a fixing device on the base, wherein, telescopic joint subassembly includes two at least joint groups, and is rotatable formula connection between two adjacent joint groups. The utility model provides a but flexible intelligent arm of free rotation can be fixed in on any one position of human body, and have free flexible, the swing, rotatory and pivoted function, the support of staff to mobile terminal (cell-phone) has not only been released, alleviate the pressure of arm, eliminate long-time handheld mobile terminal (cell-phone) acid tired sense, and can make the user obtain more suitable watching, operation position and angle moreover, the convenience that the user used operation mobile terminal (cell-phone) has been improved by a wide margin.

Description

Intelligent arm capable of freely rotating and stretching

Technical Field

The utility model relates to a but flexible intelligent arm of free rotation.

Background

Smart phones have become essential items in people's lives, and people generally watch videos, novel novels, games and the like besides using mobile phones to get in touch with others. When people use the mobile phone to take videos, watch novels, play games and the like, the user needs to hold the mobile phone for a long time, particularly when going out, the user cannot find a position to place the mobile phone at any time and any place, and the user feels tired by arms after using the mobile phone for a long time.

Therefore, under the condition that no external article supports the mobile phone, no method is provided for solving the problem of acid fatigue of the arm of the mobile phone when the mobile phone is held for a long time.

SUMMERY OF THE UTILITY MODEL

To the above, an object of the utility model is to provide a but flexible intelligent arm of free rotation can fix on human arbitrary position, and have free stretch out and draw back, the swing, rotatory and pivoted function, not only released the support of staff to mobile terminal (cell-phone), alleviate the pressure of arm, eliminate the sour tired sense of long-time handheld mobile terminal (cell-phone), and can make the user obtain more suitable watching, operation position and angle, the convenience that the user used operation mobile terminal (cell-phone) has been improved by a wide margin.

The utility model discloses a reach the technical scheme that above-mentioned purpose adopted and be:

the utility model provides a but flexible intelligent arm of free rotation which characterized in that includes a base, sets up a telescopic joint subassembly on the base, rotates and connects an adjustable anchor clamps on telescopic joint subassembly, and sets up a fixing device on the base, wherein, telescopic joint subassembly includes two at least joint groups, and is rotatable formula connection between two adjacent joint groups.

As a further improvement of the present invention, two adjacent joint groups are connected by a rotating assembly, a U-shaped abdicating groove is formed on one end of the two joint groups, and a connecting arm is respectively formed on two sides of the U-shaped abdicating groove; the rotating assembly comprises a pin connected between connecting arms on two sides of the U-shaped abdicating groove and a rotating connecting piece sleeved on the periphery of the pin, the rotating connecting piece mainly comprises an upper connecting shaft embedded in the U-shaped abdicating groove and sleeved on the periphery of the pin and a connecting turntable formed at the lower end of the upper connecting shaft, and the connecting turntable is rotatably connected to the end part of the other joint group in the two joint groups.

As a further improvement, the two joint groups are a lower joint group and a upper joint group connected to the upper end of the lower joint group in a rotating manner, and the adjustable fixture is arranged on the upper joint group.

As a further improvement of the utility model, a side clamping groove for the lower joint group to be clamped is arranged on one side edge of the base, and a cavity penetrating to the outer surface of the base is communicated and arranged at the lower part of the side clamping groove; the lower end of the lower joint group is connected with a swing connecting piece movably embedded into the cavity, the swing connecting piece mainly comprises a circular connector movably embedded into the cavity and a connecting column connected between the circular connector and the lower end of the lower joint group, and a connecting clamping groove for embedding and swinging the connecting column is formed between the lower part of the clamping groove on the side and the cavity.

As a further improvement of the present invention, the adjustable clamp is mainly composed of a lower clamping plate and an upper clamping portion disposed at the upper end of the lower clamping plate, wherein the lower clamping plate and the upper clamping portion are combined to form a clamping position; at least one adjusting component is connected between the lower clamping plate and the upper clamping part, and comprises an adjusting rod, a spring and a lower limiting part, wherein the adjusting rod is positioned between the lower clamping plate and the upper clamping part, the upper end of the adjusting rod is limited in the upper clamping part, the spring is sleeved on the periphery of the adjusting rod, and the lower limiting part is connected to the lower end of the adjusting rod and abuts against the lower end of the spring; an upper limiting piece which is pressed against the upper end of the spring is convexly arranged in the lower clamping plate; a strip-shaped sliding groove for embedding the adjusting rod and the spring is formed in the lower clamping plate; the upper limiting piece is an arc-shaped convex block arranged on the inner wall of the upper part of the strip-shaped sliding chute, and the arc-shaped convex block is sleeved on the periphery of the adjusting rod and is positioned at the upper end of the spring; the lower limiting piece is a lower nut which is screwed on the lower end of the adjusting rod; two supporting fixture blocks are convexly arranged in the upper clamping part, and a clamping groove for clamping the adjusting rod is formed in each of the two supporting fixture blocks; the adjusting rod is connected with a limit nut and an upper nut in a threaded mode, the limit nut is located between the two supporting clamping blocks, and the upper nut is connected with the upper end portion of the adjusting rod in a threaded mode.

As a further improvement of the utility model, a rotary chassis is arranged on the end surface of the upper joint group close to the adjustable fixture, and an engaging rotating shaft engaged with the rotary chassis is convexly arranged in the adjustable fixture; a rear annular gear tooth is formed on the rotating chassis, and a front annular gear tooth meshed with the rear annular gear tooth is formed on the meshing rotating shaft.

As a further improvement of the utility model, a strip-shaped groove is arranged on the end surface of the upper joint group close to the adjustable fixture, a stop block is arranged at the lower part of the strip-shaped groove, a sliding bottom block connected with the stop block is arranged at the upper part of the strip-shaped groove, a sliding groove is formed on the sliding bottom block, and strip-shaped clamping strips are respectively formed at two sides of the sliding groove; and two side edges of the rotating chassis are respectively provided with a clamping groove for clamping the strip-shaped clamping strip.

As a further improvement of the utility model, a plurality of middle joint groups are rotationally 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 respectively connected by a plurality of joints in a telescopic way.

As a further improvement of the present invention, the fixing device is a buckle type binding band, a hook and loop fastener binding band or a suction cup.

As a further improvement of the utility model, be provided with a power supply unit in the base, this power supply unit's charging wire runs through base and telescopic joint subassembly in proper order, makes the charging plug of charging wire expose in the telescopic joint subassembly upper portion outside.

As a further improvement of the present invention, an earphone is disposed on the base, a via hole is disposed on the base, one end of the earphone cord is sequentially connected to the base and the telescopic joint assembly, the connecting plug of the earphone is exposed outside the upper portion of the telescopic joint assembly, and the other end of the earphone cord is connected to the via hole to expose the earphone of the earphone outside the base.

The utility model has the advantages that:

(1) the whole intelligent arm can be fixed on any part of a human body through the fixing device, and meanwhile, the mobile terminal (mobile phone) is clamped on the adjustable clamp, the adjustable clamp can freely rotate relative to the telescopic joint component, and meanwhile, the telescopic joint component has the functions of free expansion, swinging, rotation and rotation, so that the support of hands on the mobile terminal (mobile phone) is released, the pressure of the arms of the human body is reduced, the acid tiredness of holding the mobile terminal (mobile phone) for a long time is eliminated, a user can obtain more proper watching, operating direction and angle, the whole collection and carrying of the intelligent arm are facilitated, and the convenience of using and operating the mobile terminal (mobile phone) by the user is greatly improved;

(2) the power supply device is collected in the base, the charging wire is collected in the telescopic joint component, the charging plug is exposed out of the outer side of the upper part of the telescopic joint component, when a mobile terminal (mobile phone) needs to be charged, the mobile terminal (mobile phone) can be charged without an additional power supply device and the charging wire, great convenience is brought to charging and use of the mobile terminal (mobile phone), and in the charging process, no influence is caused on normal use of the intelligent arm;

(3) the earphone cord is collected in the intelligent arm, the connecting plug of the earphone cord is exposed outside the upper portion of the telescopic joint component, so that the earphone cord can be conveniently plugged into a mobile terminal (mobile phone), meanwhile, the earplug is exposed outside the base, a user can conveniently wear the earplug into the ear, the earphone and the mobile terminal (mobile phone) can be used in a combined mode, great convenience is brought to the use of the mobile terminal (mobile phone), and in the using process of the earphone, the normal use of the intelligent arm is not affected.

The above is an overview of the technical solution of the present invention, and the present invention is further explained with reference to the accompanying drawings and the detailed description.

Drawings

FIG. 1 is a schematic structural diagram according to a first embodiment;

FIG. 2 is a schematic view of a combination of a telescopic joint assembly and an adjustable clamp according to an embodiment;

FIG. 3 is a schematic view of the overall structure of a joint set composed of two joints according to the first embodiment;

FIG. 4 is a schematic view of a base and a lower joint set according to an embodiment;

FIG. 5 is a schematic structural diagram of a base according to an embodiment;

FIG. 6 is a schematic structural diagram illustrating an overall contracted state of the smart arm according to an embodiment;

FIG. 7 is a schematic view of an adjustable clamp rotated to a side close to a base according to an embodiment;

FIG. 8 is a schematic view of an overall structure of an adjustable clamp according to an embodiment;

FIG. 9 is a schematic view of a portion of an adjustable clamp according to an embodiment;

FIG. 10 is a schematic view of the upper middle joint set according to an embodiment;

FIG. 11 is a schematic view of the adjustable clamp rotated to a position perpendicular to the upper joint set according to the first embodiment;

FIG. 12 is a schematic front view illustrating the adjustable clamp rotated to a side close to the base and the adjustable clamp and the upper joint set being in a vertical state according to the first embodiment;

FIG. 13 is a schematic back view of the adjustable clamp rotated to a position close to the base and positioned perpendicular to the upper joint set according to the first embodiment;

FIG. 14 is a schematic structural view of the second embodiment;

fig. 15 is a schematic structural diagram of the third embodiment.

Detailed Description

To further illustrate the technical means and effects of the present invention adopted to achieve the intended purpose, the following detailed description of the embodiments of the present invention is provided in conjunction with the accompanying drawings and preferred embodiments.

The first embodiment is as follows:

referring to fig. 1, the present embodiment provides a smart arm capable of freely rotating and extending, including a base 1, a telescopic joint assembly 2 disposed on the base 1, an adjustable fixture 3 rotatably connected to the telescopic joint assembly 2, and a fixing device 4 disposed 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 to each other.

The intelligent arm provided by the embodiment is tied to any part of a human body through the fixing device 4, preferably, the intelligent arm can be tied to an arm and can be used as a third arm of the human body; meanwhile, the mobile terminal (such as a mobile phone) is clamped on the adjustable clamp 3, and the adjustable clamp 3 can freely rotate relative to the telescopic joint component 2, and the telescopic joint component 2 has the functions of free expansion and rotation, so that the support of hands on the mobile terminal is released, a user obtains proper watching and operating directions and angles, and the convenience of the user in using and operating the mobile terminal (the mobile phone) is greatly improved.

The specific structure of the fixing device 4 can be set according to specific needs, in this embodiment, the fixing device 4 is a snap-in type strap, a hook-and-loop fastener, or a suction cup, and of course, other fixing structures are also possible as long as the smart arm can be fixed at a certain position on the body, or fixed/placed on other objects (e.g., a table, a chair, etc.) besides the human body. For example, when the fixing device 4 is a snap-in type strap or a hook and loop type strap, as shown in fig. 1, the smart arm can be tied to the arm by 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 sucker, a magnet and the like, the intelligent arm can be fixed on an object such as a desk and the like through the fixing device 4.

In this embodiment, as shown in fig. 2, the two adjacent joint sets 21 are connected by a rotating component 22, a U-shaped receding slot 211 is formed on an end of one of the two joint sets 21, and a connecting arm 212 is respectively formed on two sides of the U-shaped receding slot 211; the rotating component 22 includes a pin 221 connected between the connecting arms 212 at two sides of the U-shaped receding groove 211, and a rotating connecting component 222 sleeved on the periphery of the pin 221, the rotating connecting component 222 mainly includes an upper connecting shaft 2221 embedded in the U-shaped receding groove 211 and sleeved on the periphery of the pin 221, and a connecting turntable 2222 formed at the lower end of the upper connecting shaft 2221, and the connecting turntable 2222 is rotatably connected to the end of the other joint set of the two joint sets 21.

In this embodiment, the pin 221 of the rotating assembly 22 is matched with the rotating connecting member 222, so that the two adjacent joint sets 21 can rotate according to specific requirements, for example, the upper joint set 21 can swing downwards to form a certain angle between the two adjacent joint sets 21, after the mobile phone is clamped on the adjustable fixture 3, the user can obtain a more suitable viewing and operating angle and orientation, which is convenient for the use of the mobile phone. Meanwhile, the connection turntable 2222 is rotatably connected to the end of the joint set, and the connection turntable 2222 can drive the upper joint set to rotate 360 degrees, that is, the upper joint set rotates with respect to the lower joint set, which is convenient for rotating the adjustable clamp 3 to a desired direction, as shown in fig. 7, the adjustable clamp 3 is rotated to a side close to the base. Meanwhile, the connection turntable 2222 in this embodiment may be retracted into the joint group 21, so that the upper joint group 21 may be retracted into the lower joint group 21 as a whole, i.e. the telescopic joint assembly 2 may be extended or shortened, thereby adjusting the length of the telescopic joint assembly 2, and when the telescopic joint assembly 2 is retracted to the shortest length, the telescopic joint assembly 2 and the adjustable fixture 3 are integrally stored in the base 1, as shown in fig. 6, so that when the smart arm is not used, the smart arm may be conveniently stored and carried, for example, placed in a pocket or a bag, and the temporary space is small.

In this embodiment, the two joint sets 21 are a lower joint set 21 'and an upper joint set 21 ″ rotatably connected to the upper end of the lower joint set 21', and the adjustable clamp 3 is disposed on the upper joint set 21 ″. Of course, a plurality of middle joint groups 21 '"are also rotatably connected between the lower joint group 21' and the upper joint group 21", as shown in fig. 1 and 2. Moreover, the upper joint group 21 ", the middle joint group 21 '" and the lower joint group 21' are respectively telescopically connected by a plurality of joints 210, as shown in fig. 3, the upper joint group 21 "is composed of one joint, and the middle 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, a side of the base 1 is provided with a side slot 11 for the lower joint set 21' to be inserted into, and a cavity 12 penetrating to the outer surface of the base 1 is disposed in communication with the lower portion of the side slot 11; the lower end of the lower joint group 21 'is connected with a swing connector 213 movably inserted into the cavity 12, the swing connector 213 mainly comprises a circular connector 2131 movably inserted into the cavity 12 and a connecting column 2132 connected between the circular connector 2131 and the lower end of the lower joint group 21', and a connecting clamping groove 13 for the connecting column 2132 to be inserted and swing is formed between the lower part of the side clamping groove 11 and the cavity 12. Since the swing connector 213 can be moved in the cavity 12, that is, the swing connector 213 can swing freely in the cavity 12, in general, the lower joint set 21' is clamped in the side clamping slot 11, when the lower joint set 21' needs to be swung to obtain a better viewing and operating position and angle, only the lower joint set 21' needs to be swung outward, and in the swinging process, the circular connector 2131 of the swing connector 213 moves in the cavity 12. Therefore, when the smart arm is retracted to the shortest state, the upper joint group 21', the middle joint group 21' ″ and the adjustable clamp 3 are retracted into the lower joint group 21', and the lower joint group 21' is housed in the side slot 11 of the base 1, as shown in fig. 6.

Referring to fig. 8 and 9, the adjustable clamp 3 of the present embodiment mainly comprises a lower clamping plate 31 and an upper clamping portion 32 disposed at the upper end of the lower clamping plate 31, wherein the lower clamping plate 31 and the upper clamping portion 32 are combined to form a clamping position 33, and the mobile terminal (mobile phone 10) is clamped in the clamping position 33. Since the mobile phones 10 of different brands and models have different sizes, the clamping position 33 on the adjustable clamp 3 needs to be set to be adjustable. Specifically, at least one adjusting assembly 34 is connected between the lower clamping plate 31 and the upper clamping portion 32, and in this embodiment, the adjusting assemblies 34 are two groups. Specifically, the adjusting assembly 34 includes an adjusting rod 341 located between the lower clamping plate 31 and the upper clamping portion 32 and having an upper end limited in the upper clamping portion 32, a spring 342 sleeved on the periphery of the adjusting rod 341, and a lower limiting member 343 connected to the lower end of the adjusting rod 341 and abutting against the lower end of the spring 342, in this embodiment, the lower limiting member 343 is a lower nut screwed on the lower end of the adjusting rod 341; an upper stopper 311 is protruded into the lower clamping plate 31 to abut against the upper end of the spring 342. When the size of the mobile phone 10 to be held is large, the upper holding portion 32 can be pulled upward to lengthen the holding position 33. When the upper clamping portion 32 is pulled upwards, the adjusting rod 341 and the lower limiting member 343 are driven to move upwards, the spring 342 is compressed, after the mobile phone 10 is clamped on the clamping position 33, the pulling force on the upper clamping portion 32 is released, the elastic restoring force of the spring 342 exerts a downward acting force on the adjusting rod 341, the adjusting rod 341 also exerts a downward acting force on the upper clamping portion 32, and the upper clamping portion 32 exerts a clamping force on the mobile phone 10, so that the mobile phone 10 is stably clamped in the clamping position 33 and cannot fall off.

In order to enable the adjustment rod 341 of the adjustment assembly 34 to move linearly, the present embodiment forms a bar-shaped sliding slot 312 in the lower clamping plate 31 for the adjustment rod 341 and the spring 342 to be inserted into, so as to ensure that the adjustment rod 341 does not move in a deviating manner. Meanwhile, the upper limiting member 311 is an arc-shaped protrusion 311 'disposed on the inner wall of the upper portion of the bar-shaped sliding slot 312, the arc-shaped protrusion 311' is sleeved on the periphery of the adjusting rod 341 and located at the upper end of the spring 342, and the upper end of the spring 342 is limited by the arc-shaped protrusion 311', so that the spring 342 moves within a certain range without exceeding the arc-shaped protrusion 311'.

In this embodiment, for limiting the upper end of the adjusting rod 341, specifically, two supporting blocks 321 are convexly disposed in the upper clamping portion 32, and a slot 3211 for the adjusting rod 341 to be inserted is formed on each of the two supporting blocks 321; meanwhile, a limit nut 344 and an upper nut 345 are screwed on the adjusting rod 341, the limit nut 344 is positioned between the two supporting blocks 321, and the upper nut 345 is screwed on the upper end of the adjusting rod 341.

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

Specifically, as shown in fig. 10, in this embodiment, a rotating chassis 214 is disposed on an end surface of the upper joint set 21 ″ close to the adjustable fixture 3, and an engaging rotating shaft 35 engaged with the rotating chassis 214 is convexly disposed inside the adjustable fixture 3, as shown in fig. 8 and 9; a rear annular cog 2141 is formed on the rotating base plate 214, and a front annular cog 351, which is engaged with the rear annular cog 2141, is formed on the engaging rotary shaft 35. The front ring gear 351 and the rear ring gear 2141 are engaged with each other to realize the rotation of the adjustable clamp 3 at any angle with respect to the upper joint set 21 ", as shown in fig. 11 to 13, the adjustable clamp 3 is rotated to be perpendicular to the upper joint set 21". Specifically, when the adjustable clamp 3 is rotated, the engaging shaft 35 rotates, and the front ring gear 351 slides on the rear ring gear 2141, so that the adjustable clamp 3 is rotated.

Meanwhile, as shown in fig. 10, a strip-shaped groove is formed on the end surface of the upper joint group 21 ″ close to the adjustable fixture 3, a stopper 216 is arranged at the lower part of the strip-shaped groove, a sliding bottom block 217 connected to the stopper 216 is arranged at the upper part of the strip-shaped groove, a sliding slot 2171 is formed on the sliding bottom block 217, and strip-shaped clamping strips 2172 are respectively formed at both sides of the sliding slot 2171; two side edges of the rotating chassis 214 are respectively formed with a slot 2142 for the strip-shaped card strip 2172 to be clipped in.

Example two:

as shown in fig. 14, in the present embodiment, a power supply device (not shown) is disposed in the base 1, specifically, the power supply device may be a rechargeable battery, a mobile power source, or the like. The charging wire 51 of the power supply device sequentially penetrates through the base 1 and the telescopic joint assembly 2, so that the charging plug 51 of the charging wire 5 is exposed outside the upper part of the telescopic joint assembly 2. In this embodiment, preferably, the upper end of the charging cable 5 can penetrate through any position on the upper joint set 21 ″ so that the charging plug 51 is exposed outside the upper joint set 21 ″ for being inserted into the mobile phone 10. When the mobile phone 10 is clamped on the adjustable clamp 3, the charging plug 51 is directly inserted into the mobile phone 10, so as to charge the mobile phone 10.

Usually, when the cell-phone electric quantity is not enough, need find extra power supply unit and charging wire and charge for cell-phone 10, can't in time find power supply unit sometimes and charge for cell-phone 10, will influence cell-phone 10's normal use, bring very big inconvenience for the user, power supply unit and charging wire occupation space in addition, and the messy phenomenon of charging wire can often appear. This embodiment is collected power supply unit in base 1, collects charging wire 5 in telescopic joint subassembly 2, when cell-phone 10 need charge, does not need extra power supply unit and charging wire can charge for the cell-phone, brings very big facility for the use, and at the in-process that charges moreover, there is not any influence to the normal use of intelligence arm.

Example three:

as shown in fig. 15, in the present embodiment, an earphone 6 is disposed on the base 1, a through hole 11 is disposed on the base 1, one end of an earphone cord 61 of the earphone 6 sequentially penetrates through the base 1 and the telescopic joint assembly 2, so that a connection plug 62 of the earphone 6 is exposed outside an upper portion of the telescopic joint assembly 2, and the other end of the earphone cord 61 of the earphone 6 penetrates through the through hole 11 so that an earplug 63 of the earphone 6 is exposed outside the base 1. In this embodiment, preferably, the upper end of the earphone cord 61 can be extended out from any position on the upper joint set 21 ″ so that the connection plug 62 is exposed outside the upper joint set 21 ″ for being inserted into the mobile phone 10. The mobile phone 10 is clamped on the adjustable clamp 3, and when the earphone 6 is needed, the connecting plug 62 is directly inserted into the mobile phone 10.

Generally, when the earphone needs to be used, the earphone needs to be additionally found to connect the mobile phone 10 for use, and sometimes the user cannot use the earphone if forgetting to take the earphone, which brings great inconvenience to the user, and the earphone occupies a space, and the phenomenon that the earphone wire 61 is messy often occurs. In the embodiment, the earphone cord 61 is collected in the smart arm, and the connecting plug 62 of the earphone cord 61 is exposed outside the upper part of the telescopic joint component 2, so as to be plugged into the mobile phone 10, and meanwhile, the earplugs 63 are exposed outside the base 1, so that a user can wear the earplugs 63 into the ears, and the earphone 6 and the mobile phone 10 can be used in combination, thereby bringing great convenience to the use, and in the use process of the earphone 6, the normal use of the smart arm is not affected.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that other structures obtained by adopting the same or similar technical features as the above embodiments of the present invention are all within the protection scope of the present invention.

Claims (11)

1. The utility model provides a but flexible intelligent arm of free rotation which characterized in that includes a base, sets up a telescopic joint subassembly on the base, rotates and connects an adjustable anchor clamps on telescopic joint subassembly, and sets up a fixing device on the base, wherein, telescopic joint subassembly includes two at least joint groups, and is rotatable formula connection between two adjacent joint groups.

2. The intelligent arm capable of freely rotating and stretching according to claim 1, wherein the two adjacent joint groups are connected through a rotating assembly, a U-shaped abdicating groove is formed at one end of one of the two joint groups, and a connecting arm is respectively formed at two sides of the U-shaped abdicating groove; the rotating assembly comprises a pin connected between connecting arms on two sides of the U-shaped abdicating groove and a rotating connecting piece sleeved on the periphery of the pin, the rotating connecting piece mainly comprises an upper connecting shaft embedded in the U-shaped abdicating groove and sleeved on the periphery of the pin and a connecting turntable formed at the lower end of the upper connecting shaft, and the connecting turntable is rotatably connected to the end part of the other joint group in the two joint groups.

3. The smart arm as claimed in claim 1, wherein the two joint sets are a lower joint set and an upper joint set rotatably connected to the upper end of the lower joint set, and the adjustable clamp is disposed on the upper joint set.

4. The smart arm capable of freely rotating and stretching according to claim 3, wherein a side slot for the lower joint set to be clamped is formed in one side edge of the base, and a cavity penetrating to the outer surface of the base is communicated with the lower portion of the side slot; the lower end of the lower joint group is connected with a swing connecting piece movably embedded into the cavity, the swing connecting piece mainly comprises a circular connector movably embedded into the cavity and a connecting column connected between the circular connector and the lower end of the lower joint group, and a connecting clamping groove for embedding and swinging the connecting column is formed between the lower part of the clamping groove on the side and the cavity.

5. The smart arm as claimed in claim 3, wherein the adjustable clamp is mainly composed of a lower clamping plate and an upper clamping portion disposed at the upper end of the lower clamping plate, wherein the lower clamping plate and the upper clamping portion are combined to form a clamping position; at least one adjusting component is connected between the lower clamping plate and the upper clamping part, and comprises an adjusting rod, a spring and a lower limiting part, wherein the adjusting rod is positioned between the lower clamping plate and the upper clamping part, the upper end of the adjusting rod is limited in the upper clamping part, the spring is sleeved on the periphery of the adjusting rod, and the lower limiting part is connected to the lower end of the adjusting rod and abuts against the lower end of the spring; an upper limiting piece which is pressed against the upper end of the spring is convexly arranged in the lower clamping plate; a strip-shaped sliding groove for embedding the adjusting rod and the spring is formed in the lower clamping plate; the upper limiting piece is an arc-shaped convex block arranged on the inner wall of the upper part of the strip-shaped sliding chute, and the arc-shaped convex block is sleeved on the periphery of the adjusting rod and is positioned at the upper end of the spring; the lower limiting piece is a lower nut which is screwed on the lower end of the adjusting rod; two supporting fixture blocks are convexly arranged in the upper clamping part, and a clamping groove for clamping the adjusting rod is formed in each of the two supporting fixture blocks; the adjusting rod is connected with a limit nut and an upper nut in a threaded mode, the limit nut is located between the two supporting clamping blocks, and the upper nut is connected with the upper end portion of the adjusting rod in a threaded mode.

6. The smart arm capable of freely rotating and stretching according to claim 3, wherein a rotating chassis is arranged on the end surface of the upper joint group close to the adjustable fixture, and an engaging rotating shaft engaged with the rotating chassis is convexly arranged in the adjustable fixture; a rear annular gear tooth is formed on the rotating chassis, and a front annular gear tooth meshed with the rear annular gear tooth is formed on the meshing rotating shaft.

7. The smart arm capable of freely rotating and stretching according to claim 6, wherein a bar-shaped groove is formed on the end surface of the upper joint group close to the adjustable fixture, a stop block is arranged at the lower part of the bar-shaped groove, a sliding bottom block connected to the stop block is arranged at the upper part of the bar-shaped groove, a sliding groove is formed on the sliding bottom block, and a bar-shaped clamping strip is respectively formed at two sides of the sliding groove; and two side edges of the rotating chassis are respectively provided with a clamping groove for clamping the strip-shaped clamping strip.

8. The smart arm capable of freely rotating and stretching as claimed in claim 3, wherein a plurality of 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 respectively connected by a plurality of joints in a telescopic way.

9. A smart arm as claimed in claim 1, wherein the fixing means is a snap-in strap, a hook and loop strap or a suction cup.

10. The smart boom capable of freely rotating and extending and retracting according to claim 1, wherein a power supply device is disposed in the base, and a charging wire of the power supply device sequentially penetrates through the base and the telescopic joint assembly, so that a charging plug of the charging wire is exposed outside the upper portion of the telescopic joint assembly.

11. The smart arm as claimed in claim 1, wherein an earphone is disposed on the base, a through hole is disposed on the base, one end of an earphone cord of the earphone sequentially passes through the base and the telescopic joint assembly, such that a connecting plug of the earphone is exposed outside an upper portion of the telescopic joint assembly, and the other end of the earphone cord of the earphone passes through the through hole such that an earphone plug of the earphone is exposed outside the base.