CN211457173U

CN211457173U - Gear transmission mechanism and three-axis linkage type mobile phone support

Info

Publication number: CN211457173U
Application number: CN202020175458.1U
Authority: CN
Inventors: 朱长仙
Original assignee: Shenzhen Zhigaoxiang Technology Development Co ltd
Current assignee: Shenzhen Zhigaoxiang Technology Development Co ltd
Priority date: 2020-02-16
Filing date: 2020-02-16
Publication date: 2020-09-08
Anticipated expiration: 2030-02-16

Abstract

The utility model discloses a gear drive mechanism and triaxial coordinated type cell phone stand, it is including the master gear and follow the gear, the notch has been seted up to the top face of master gear, the inside wall of notch is formed with a plurality of bayonets, be located from the gear in the notch, just from the gear with the coaxial setting of master gear, the lateral part from the gear is formed with the elastic arm of outside extension, be formed with the lug on the elastic arm, borrow by the elasticity order that the elastic arm was applyed the lug joint in the bayonet. The utility model discloses can reverse operation when reverse power reaches sufficient intensity, can avoid causing harmful effects because of forward drive power is too big simultaneously.

Description

Gear transmission mechanism and three-axis linkage type mobile phone support

Technical Field

The utility model relates to a cell phone stand especially relates to a gear drive mechanism and triaxial coordinated type cell phone stand.

Background

The mobile phone support is a device which is arranged on a desktop, an automobile center console and the like and is used for clamping and supporting a mobile phone. With the technology of mobile phone support products changing day by day, some electric mobile phone supports are deeply loved by consumers. The electric mobile phone support adopts a built-in motor and a transmission mechanism to drive clamping jaws at two sides to perform opening and clamping actions, for the internal transmission mechanism, the existing realization mode generally adopts a reduction gear assembly, when the motor drives the reduction gear assembly to operate, the transverse movement of the clamping jaws is realized in a mode of mutually matching a gear and a spur rack, although the structure can clamp the mobile phone, when the equipment is powered off (for example, after parking and flameout), the clamping jaws at two sides cannot be manually opened through external force because the gear reduction mechanism cannot apply force reversely, the mobile phone is clamped on the mobile phone support and cannot be taken down or is difficult to take down, in addition, once the torque output by the motor is too large, the support can cause too large clamping force of the clamping jaws on the mobile phone, the situation of powerful clamping easily causes damage to the mobile phone, not only causes great inconvenience for the use process of a user, but also causes poor user, and is liable to adversely affect the hand mechanism.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model lies in, to prior art's not enough, provide one kind and can reverse operation when reverse power reaches sufficient intensity, can avoid causing harmful effects because of forward drive power is too big simultaneously, and then satisfy the gear drive mechanism and the triaxial linkage formula cell phone stand of application demand.

In order to solve the technical problem, the utility model adopts the following technical scheme.

A gear transmission mechanism comprises a main gear and a driven gear, wherein a notch is formed in the top end face of the main gear, a plurality of bayonets are formed in the inner side wall of the notch, the driven gear is located in the notch, the driven gear and the main gear are coaxially arranged, an elastic arm extending outwards is formed on the side portion of the driven gear, a convex block is formed on the elastic arm, and the convex block is clamped in the bayonets through elastic force applied by the elastic arm.

Preferably, a plurality of bayonets are evenly distributed along the circumferential direction of the notch, so that the inner side wall of the notch is corrugated.

Preferably, the bayonet is a semicircular bayonet, and the projection is a semicircular projection.

Preferably, two elastic arms are formed at the side part of the slave gear, and the two elastic arms are symmetrically arranged at two sides of the slave gear.

Preferably, the resilient arm is arcuate and is integrally formed with the slave gear.

Preferably, a plurality of bumps are formed on the elastic arm, and the bumps are uniformly distributed in the middle of the elastic arm.

Preferably, the driven gear is sleeved with an output gear, and the driven gear and the output gear are mutually clamped.

Preferably, a sleeve portion is formed at a top end of the slave gear, the output gear is sleeved on the sleeve portion, internal teeth are formed at a bottom opening of the output gear, and the internal teeth are engaged with the external teeth of the slave gear.

A three-axis linkage type mobile phone support comprises a shell, wherein a gear transmission mechanism and a motor driving mechanism are arranged in the shell, two transverse clamping arms and a longitudinal supporting arm are arranged on the side portion of the shell, the transverse clamping arms and the longitudinal supporting arm are distributed in a 'pin' shape, the two transverse clamping arms are respectively arranged on the left side and the right side of the shell, each transverse clamping arm is an 'L' -shaped clamping arm comprising a transverse sliding block and a vertical clamping block, the transverse sliding block is inserted into the shell and is in sliding connection with the transverse sliding block, and a transverse straight rack is formed at the end portion of the transverse sliding block; the longitudinal supporting arm is an L-shaped supporting arm comprising a longitudinal sliding block and a vertical supporting block, the longitudinal sliding block is inserted into the shell and is connected with the shell in a sliding manner, and a longitudinal straight rack is arranged at the end part of the longitudinal sliding block; the gear transmission mechanism comprises a main gear and a driven gear, wherein a notch is formed in the top end face of the main gear, a plurality of bayonets are formed in the inner side wall of the notch, the driven gear is located in the notch, the driven gear and the main gear are coaxially arranged, an elastic arm extending outwards is formed on the side portion of the driven gear, a convex block is formed on the elastic arm, and the convex block is clamped in the bayonets through the elastic force exerted by the elastic arm; the motor driving mechanism comprises a motor and a reduction gear set, and a driving shaft of the motor, the reduction gear set and the main gear are in transmission fit in sequence; the transverse straight rack and the longitudinal straight rack are respectively in transmission fit with the driven gear, and when the driven gear runs, the transverse clamping arm and the longitudinal supporting arm are driven to be away from or close to each other.

Preferably, the driven gear is sleeved with an output gear and the driven gear are mutually clamped, the output gear is clamped between two transverse straight racks, the two transverse straight racks are meshed with the output gear, and the longitudinal straight racks are meshed with the driven gear.

In the gear transmission mechanism disclosed by the utility model, the main gear and the secondary gear are coaxially arranged, and the two gears can be sleeved on the same supporting shaft, meanwhile, the top end of the main gear is provided with a notch with a plurality of bayonets, the elastic arm at the outer side of the secondary gear is provided with a lug, under the action of the elastic force applied by the elastic arm, the lug is elastically butted in the bayonet, so that the secondary gear is tightly matched with the main gear, when the preset motor driving mechanism drives the main gear to operate, the power transmission is realized by utilizing the clamping action of the lug and the bayonet, so that the main gear drives the secondary gear to synchronously operate, when the equipment is powered off and the like, the reverse power can be applied to the secondary gear from the power output end, when the reverse power obtained from the gear overcomes the clamping force between the lug and the bayonet, the auxiliary gear can slide relative to the main gear, so that the function of driving the auxiliary gear to rotate reversely under the action of reverse power is realized, and in addition, once the torsion applied by a preset motor driving mechanism is overlarge, the clamping force between the lug and the bayonet can be overcome, so that the main gear and the auxiliary gear can slide relative to each other, unnecessary damage caused by overlarge torsion output by the auxiliary gear is avoided, and various application requirements are better met.

Drawings

Fig. 1 is a perspective view of a three-axis linkage type mobile phone support clamping a mobile phone;

FIG. 2 is a perspective view of a three-axis linkage mobile phone support;

FIG. 3 is a side view of a three-axis linkage mobile phone stand;

FIG. 4 is a partially exploded view of a three-axis linkage mobile phone stand;

FIG. 5 is a top view of the internal structure of the housing;

FIG. 6 is a block diagram of the motor drive mechanism, the lateral clamp arm, and the longitudinal bracket arm;

FIG. 7 is an exploded view of FIG. 6;

FIG. 8 is a structural view of the gear transmission mechanism and the motor drive mechanism;

FIG. 9 is a first exploded view of the gear assembly;

FIG. 10 is a second exploded view of the gear assembly;

FIG. 11 is a block diagram of the gear train, the lateral clamp arm, the longitudinal bracket arm, and the inner housing;

fig. 12 is a perspective view of a holding mechanism according to a first embodiment of the present invention;

fig. 13 is an exploded view of a clamping mechanism according to a first embodiment of the present invention;

fig. 14 is a perspective view of a holding mechanism according to a second embodiment of the present invention;

fig. 15 is an exploded view of a clamping mechanism according to a second embodiment of the invention;

fig. 16 is a sectional view of a holding mechanism according to a second embodiment of the present invention;

fig. 17 is a view showing a structure of the carrier block and the pressure ring.

Detailed Description

The present invention will be described in more detail with reference to the accompanying drawings and examples.

Example one

The present embodiment provides a gear transmission mechanism, as shown in fig. 1 to 13, which includes a main gear 40 and a slave gear 41, wherein a notch 400 is formed on a top end surface of the main gear 40, a plurality of bayonets 401 are formed on an inner side wall of the notch 400, the slave gear 41 is located in the notch 400, the slave gear 41 and the main gear 40 are coaxially disposed, an elastic arm 410 extending outward is formed on a side portion of the slave gear 41, a protrusion 411 is formed on the elastic arm 410, and the protrusion 411 is engaged with the bayonet 401 by an elastic force applied by the elastic arm 410.

In the above-mentioned structure, as shown in fig. 8 to 10, the master gear 40 and the slave gear 41 are coaxially disposed, and specifically, the master gear 40 and the slave gear 41 can be sleeved on the same support shaft, and a notch 400 having a plurality of bayonets 401 is disposed at the top end of the master gear 40, a protrusion 411 is disposed on the elastic arm 410 outside the slave gear 41, under the elastic force applied by the elastic arm 410, the protrusion 411 elastically abuts against the inside of the bayonet 401, so that the slave gear 41 and the master gear 40 are tightly fitted, when a preset motor driving mechanism drives the master gear 40 to operate, power transmission is realized by the engaging action of the protrusion 411 and the bayonet 401, so that the master gear 40 drives the slave gear 41 to synchronously operate, when the device is powered off or the like, a reverse power can be applied to the slave gear 41 from the power output end, and when the reverse power obtained from the slave gear 41 overcomes the engaging force between the protrusion 411 and the bayonet 401, the slave gear 41 slides relative to the master gear 40, so as to realize the function of driving the slave gear 41 to rotate in reverse direction under the action of reverse power, and in addition, once the torsion applied by a preset motor driving mechanism is too large, the clamping force between the protrusion 411 and the bayonet 401 can be overcome, so that the master gear 40 and the slave gear 41 slide relative to each other, unnecessary damage caused by too large torsion output by the slave gear 41 is avoided, and various application requirements are better met.

Preferably, the plurality of bayonets 401 are uniformly distributed along the circumferential direction of the recess 400, so that the inner side wall of the recess 400 is corrugated.

Further, the bayonet 401 is a semicircular bayonet, and the protrusion 411 is a semicircular protrusion. However, this is only a preferred application, and in practical applications, the bayonet 401 may also be configured as a triangular bayonet, and the protrusion 411 may also be configured as a triangular protrusion.

In order to balance the forces on the two sides of the slave gear 41, in this embodiment, two elastic arms 410 are formed on the side of the slave gear 41, and the two elastic arms 410 are symmetrically arranged on the two sides of the slave gear 41.

In order to ensure that the elastic arm 410 has sufficient elasticity, in the present embodiment, the elastic arm 410 is in an arc shape, and the elastic arm 410 is integrally formed with the slave gear 41.

In order to achieve accurate clamping, in this embodiment, a plurality of bumps 411 are formed on the elastic arm 410, and the bumps 411 are uniformly distributed in the middle of the elastic arm 410.

Preferably, the driven gear 41 is fitted with the output gear 42, and both are engaged with each other.

In order to ensure that power transmission is reliably achieved between the slave gear 41 and the output gear 42, in the present embodiment, a socket portion 412 is formed at the tip end of the slave gear 41, the output gear 42 is fitted over the socket portion 412, internal teeth 420 are formed at the bottom opening of the output gear 42, and the internal teeth 420 and the external teeth of the slave gear 41 are engaged with each other.

The embodiment can be applied to a three-axis linkage type mobile phone support, as shown in fig. 1 to 13, the mobile phone support includes a housing 1, a gear transmission mechanism and a motor driving mechanism are arranged in the housing 1, two transverse clamping arms 2 and a longitudinal supporting arm 3 are arranged on a side portion of the housing 1, the transverse clamping arms 2 and the longitudinal supporting arm 3 are distributed in a "pin" shape, the two transverse clamping arms 2 are respectively arranged on left and right sides of the housing 1, the transverse clamping arms 2 are "L" shaped clamping arms including a transverse sliding block 20 and a vertical clamping block 21, the transverse sliding block 20 is inserted in the housing 1 and is connected with the housing 1 in a sliding manner, and a transverse straight rack 22 is formed at an end portion of the transverse sliding block 20;

the longitudinal supporting arm 3 is an L-shaped supporting arm comprising a longitudinal sliding block 30 and a vertical supporting block 31, the longitudinal sliding block 30 is inserted into the shell 1 and is in sliding connection with the shell, and a longitudinal straight rack 32 is arranged at the end part of the longitudinal sliding block 30;

the gear transmission mechanism comprises a main gear 40 and a slave gear 41, wherein a notch 400 is formed on the top end surface of the main gear 40, a plurality of bayonets 401 are formed on the inner side wall of the notch 400, the slave gear 41 is positioned in the notch 400, the slave gear 41 and the main gear 40 are coaxially arranged, an elastic arm 410 extending outwards is formed on the side part of the slave gear 41, a bump 411 is formed on the elastic arm 410, and the bump 411 is clamped in the bayonet 401 by means of the elastic force exerted by the elastic arm 410;

the motor driving mechanism comprises a motor 50 and a reduction gear set 51, and a driving shaft of the motor 50, the reduction gear set 51 and the main gear 40 are sequentially matched in a transmission way;

the transverse spur rack 22 and the longitudinal spur rack 32 are respectively in transmission fit with the slave gear 41, and when the slave gear 41 runs, the transverse clamping arm 2 and the longitudinal supporting arm 3 are driven to move away from or close to each other.

In the above structure, when the motor driving mechanism drives the main gear 40 to operate, the main gear 40 drives the secondary gear 41 to operate synchronously, and further drives the transverse clamping arms 2 and the longitudinal supporting arms 3 to perform opening or closing actions, when a power failure occurs in the device, the transverse clamping arms 2 and the longitudinal supporting arms 3 cannot be driven to open by the motor driving mechanism, at this time, the two transverse clamping arms 2 can be driven to open outwards manually, in this process, because the two transverse clamping arms 2 apply reverse power to the secondary gear 41 from the power output end, when the reverse power obtained from the gear 41 overcomes the engaging force between the protrusion 411 and the bayonet 401, the secondary gear 41 slides relative to the main gear 40, the secondary gear 41 runs in reverse direction, and simultaneously, the transverse clamping arms 2 and the longitudinal supporting arms 3 are driven to open manually, so that the user can take off the mobile phone in the power-off state. In addition, during normal power-on process, if the two lateral clipping arms 2 clip the mobile phone, the motor driving mechanism further continues to apply a driving force to the main gear 40, and after the driving force overcomes the engaging force between the protrusion 411 and the bayonet 401, the main gear 40 and the slave gear 41 slide relatively, so as to avoid the situation that the two lateral clipping arms 2 apply too large a clipping force to the mobile phone, and effectively protect the mobile phone from being damaged, especially when the current glass-case mobile phone products are gradually increased, such a positive driving protection measure is more necessary.

In this embodiment, the transverse clamping arm 2 and the longitudinal supporting arm 3 are respectively driven by different gears, specifically, the driven gear 41 is sleeved with the output gear 42, the output gear 42 is clamped between the two transverse spur racks 22, the two transverse spur racks 22 are engaged with the output gear 42, and the longitudinal spur rack 32 is engaged with the driven gear 41.

In this embodiment, a driving plate 33 is connected to an end of the longitudinal sliding block 30, and the longitudinal spur rack 32 is located at an end of the driving plate 33;

in order to ensure that the longitudinal spur rack 32 reliably cooperates with the slave gear 41, in this embodiment, a longitudinal stop rack 34 is formed at an end of the transmission plate 33, the longitudinal stop rack 34 is parallel to the longitudinal spur rack 32, and the longitudinal stop rack 34 and the longitudinal spur rack 32 are respectively disposed at two sides of the slave gear 41. The longitudinal bars 34 can have the functions of resisting and limiting.

In order to ensure that the driving plate 33 and the longitudinal sliding block 30 are more reliably in traction fit, in this embodiment, the driving plate 33 is formed with a traction block 330 bent upward, the longitudinal sliding block 30 is provided with a traction slot 300, and the traction block 330 is inserted into the traction slot 300 and is engaged with the traction slot 300.

In order to improve the stability of the transverse sliding motion, in this embodiment, a transverse sliding rod 23 is formed at an end of the transverse sliding block 20, the transverse sliding rod 23 is parallel to the transverse spur rack 22, and the transverse sliding rod 23 and the transverse spur rack 22 are respectively disposed at two sides of the output gear 42.

As a preferable mode, an inner casing 10 is arranged in the casing 1, a transverse slideway 11 and a longitudinal slideway 12 are arranged on the inner casing 10, the transverse slider 20 is inserted in the transverse slideway 11 and is in sliding connection with the transverse slideway 11, and the longitudinal slider 30 is inserted in the longitudinal slideway 12 and is in sliding connection with the longitudinal slideway 12. The inner shell 10 can support and guide the lateral slider 20 and the longitudinal slider 30 inside the housing 1.

On this basis, the present embodiment has a more reasonable arrangement of the upper gear and the lower gear, specifically, the output gear 42 is located in the transverse slideway 11, and the slave gear 41 is located below the transverse slideway 11.

In order to ensure the stability and reliability of the transverse sliding process, in this embodiment, two side inner walls of the transverse sliding way 11 are respectively formed with a slide bar stopper 110, the two slide bar stoppers 110 are respectively aligned with the end portions of the two transverse slide bars 23, and after the transverse clamping arm 2 retracts into the housing 1, the end portion of the transverse slide bar 23 abuts against the slide bar stopper 110.

The present embodiment preferably has a wireless charging function, specifically, a wireless charging module 13 is embedded in the top of the inner shell 10, a circuit board 14 is disposed in the housing 1, and the wireless charging module 13 is electrically connected to the circuit board 14.

Preferably, a panel 15 is fixed on the top of the housing 1, and the panel 15 covers the upper part of the inner housing 10.

In order to facilitate the operation of the user, in this embodiment, two sides of the housing 1 are respectively embedded with a touch switch 16, and the touch switch 16 is electrically connected to the circuit board 14.

Further, a power socket 17 is embedded in a side portion of the housing 1, and the power socket 17 is electrically connected with the circuit board 14.

In this embodiment, preferably, the mobile phone holder is fixed to an air outlet grid of an automobile console, in order to achieve reliable fixation, in this embodiment, a clamping mechanism is disposed at the bottom of the housing 1, the clamping mechanism includes a screw rod 60, a bearing block 61, two clamping jaws 62 and a locking nut 63, support frames 610 are respectively formed at two sides of the bearing block 61, the screw rod 60 passes through the bearing block 61, a transverse shaft 64 is disposed at a lower end of the screw rod 60, two hinge portions 620 are formed at an inner side of an upper end of the clamping jaw 62, two ends of the transverse shaft 64 respectively pass through the hinge portions 620 of the two clamping jaws 62, an inclined surface 621 is formed at a top of the clamping jaw 62, the inclined surface 621 gradually inclines downwards from an outer side of the clamping jaw 62 to an inner side, the inclined surface 621 is aligned with the bottom of the bearing block 61, the locking nut 63 is located above the bearing block 61, the locking nut 63 is sleeved on the screw rod, when the locking nut 63 is screwed, the locking nut 63 applies a pushing force to the bearing block 61, and the two clamping jaws 62 are driven to perform a clamping action by the cooperation of the bearing block 61 and the inclined surface 621.

Example two

In practical application, the mobile phone support can be clamped and fixed at the grid of an automobile air outlet, the existing clamping mode is that clamping jaws are directly clamped on the grid, and meanwhile, supporting feet on the outer sides of the clamping jaws are abutted to the position on the outer side of the air outlet, but the air outlet is not distributed in a transverse and longitudinal mode due to different automobile types, and the supporting feet on the outer sides of the clamping jaws are fixed, so that the clamping mechanism of the mobile phone support cannot be well matched with the air outlet grids of part of automobile types, for example, the clamping jaws and the supporting feet can be mutually matched with the transversely arranged air outlet, but when the clamping mechanism is applied to the longitudinally arranged air outlet, the supporting feet cannot be abutted to the position on the outer side of the air outlet, the application occasion of the clamping part of the mobile phone support is limited, and.

To this end, the present embodiment provides an adjustable clamping mechanism capable of flexibly adjusting the orientation of a supporting frame according to the shape of an air outlet to further match with grids of multiple types of air outlets, and as shown in fig. 14 to 17, the adjustable clamping mechanism includes a screw rod 60, a bearing block 61, two clamping jaws 62 and a lock nut 63, wherein the supporting frame 610 is respectively formed on two sides of the bearing block 61, the screw rod 60 passes through the bearing block 61, a horizontal shaft 64 is penetrated through the lower end of the screw rod 60, two hinge portions 620 are formed on the inner side of the upper end of the clamping jaw 62, two ends of the horizontal shaft 64 respectively pass through the hinge portions 620 of the two clamping jaws 62, a slope 621 is formed on the top of the clamping jaw 62, the slope 621 gradually inclines downwards from the outer side of the clamping jaw 62 to the inner side, the slope 621 aligns with the bottom of the bearing block 61, the lock nut 63 is, the locking nut 63 is sleeved on the screw rod 60 and is screwed with the screw rod 60;

the upper end surface of the bearing block 61 is provided with upper teeth 611 distributed annularly, the screw 60 is sleeved with a pressing ring 65, the pressing ring 65 is positioned between the locking nut 63 and the bearing block 61, the lower end surface of the pressing ring 65 is provided with lower teeth 650 distributed annularly, and the upper teeth 611 and the lower teeth 650 are aligned with each other;

when the locking nut 63 is screwed upwards, the locking nut 63 is separated from the pressing ring 65, and the supporting position of the supporting frame 610 is adjusted by rotating the bearing block 61;

when the locking nut 63 is screwed downwards, the locking nut 63 applies pressure to the pressing ring 65 and the bearing block 61, the upper teeth 611 and the lower teeth 650 are clamped with each other, and the two clamping jaws 62 are driven to perform clamping action by the matching of the bearing block 61 and the inclined surface 621.

In the structure, when the mobile phone support is clamped, the locking nut 63 is firstly unscrewed upwards, and the bearing block 61 can flexibly rotate at the moment, so that the two clamping jaws 62 can be firstly aligned to the grid of the air outlet, then the support frame 610 is rotated to a proper position outside the air outlet, then the locking nut 63 is screwed downwards, and the grid is clamped by the two clamping jaws 62 through the thrust applied to the two clamping jaws 62 by the bearing block 61. Compared with the prior art, the clamping mechanism can flexibly adjust the position of the support frame according to the shape of the air outlet, so that various types of air outlet grids are matched, and the requirements of users and the market demand are well met.

In order to make the overall structure of the clamping mechanism more compact, in this embodiment, the top of the bearing block 61 is provided with an accommodating recess 612, the upper teeth 611 are located at the bottom of the accommodating recess 612, and the pressing ring 65 is disposed in the accommodating recess 612.

Preferably, the receiving recess 612 is a circular recess, and the pressing ring 65 is a circular pressing ring.

In order to assist in urging the two jaws 62 to open, in the present embodiment, an elastic member 66 for urging the two jaws 62 to open is interposed between the two jaws 62.

Further, the elastic member 66 is a torsion spring sleeved on the lateral shaft 64.

In order to protect the automobile air outlet grid, in this embodiment, a soft rubber pad 622 is embedded inside the clamping jaw 62.

In order to facilitate the application of the torque by the user, in the present embodiment, a plurality of striking portions 630 protruding outward are formed at the side of the lock nut 63.

In this embodiment, it is preferable that the pressing ring 65 is limited on the screw 60, and in order to avoid rotation of the pressing ring 65, in this embodiment, a cut surface 600 is formed on a side portion of the screw 60, a limiting portion 651 is formed on an inner side of the pressing ring 65, and the limiting portion 651 and the cut surface 600 are abutted to each other.

The embodiment can be applied to a mobile phone support, which includes a housing 1, the lateral portion of the housing 1 is provided with two transverse clamping arms 2 and a longitudinal supporting arm 3, the transverse clamping arms 2 and the longitudinal supporting arm 3 are distributed in a "pin" shape, the two transverse clamping arms 2 are respectively arranged on the left and right sides of the housing 1, the mobile phone 100 is clamped between the two transverse clamping arms 2, the mobile phone 100 is supported on the longitudinal supporting arm 3, the bottom of the housing 1 is provided with a clamping mechanism, the clamping mechanism includes a screw rod 60, a bearing block 61, two clamping jaws 62 and a locking nut 63, the two sides of the bearing block 61 are respectively formed with a supporting frame 610, the screw rod 60 passes through the bearing block 61, the lower end of the screw rod 60 is penetrated with a transverse shaft 64, the inner side of the upper end of the clamping jaw 62 is formed with two hinged portions 620, the two ends of the transverse shaft 64 are respectively penetrated through the hinged portions 620 of the two clamping, a slope 621 is formed at the top of the clamping jaw 62, the slope 621 gradually inclines downwards from the outer side to the inner side of the clamping jaw 62, the slope 621 is aligned with the bottom of the bearing block 61, the locking nut 63 is located above the bearing block 61, and the locking nut 63 is sleeved on the screw rod 60 and is screwed with the screw rod 60;

The present embodiment preferably has a universal adjusting function, specifically, a universal ball 601 is formed at the top end of the screw rod 60, a universal ball seat 602 is formed at the bottom of the housing 1, and the universal ball 601 is clamped in the universal ball seat 602.

The above is only the embodiment of the present invention, and is not intended to limit the present invention, and all modifications, equivalent replacements or improvements made within the technical scope of the present invention should be included within the protection scope of the present invention.

Claims

1. A gear transmission mechanism is characterized by comprising a main gear and a driven gear, wherein a notch is formed in the top end face of the main gear, a plurality of bayonets are formed in the inner side wall of the notch, the driven gear is located in the notch, the driven gear and the main gear are coaxially arranged, an elastic arm extending outwards is formed on the side portion of the driven gear, a convex block is formed on the elastic arm, and the convex block is clamped in the bayonets through elastic force applied by the elastic arm.

2. A gear transmission according to claim 1, wherein a plurality of bayonets are evenly distributed circumferentially of the recess so that the inner side wall of the recess is corrugated.

3. The gear assembly of claim 1 wherein said bayonet is a semi-circular bayonet and said projection is a semi-circular projection.

4. The gear transmission mechanism according to claim 1, wherein two elastic arms are formed at the side of the slave gear, and the two elastic arms are symmetrically provided at both sides of the slave gear.

5. The gear assembly of claim 1 wherein said resilient arm is arcuate and said resilient arm is integrally formed with said slave gear.

6. The gear transmission mechanism according to claim 1, wherein the resilient arm has a plurality of protrusions formed thereon, and the plurality of protrusions are uniformly distributed at a middle portion of the resilient arm.

7. The gear transmission mechanism according to claim 1, wherein the driven gear is sleeved with the output gear and is engaged with the output gear.

8. The gear transmission mechanism according to claim 7, wherein a socket portion is formed at a tip end of the slave gear, the output gear is fitted over the socket portion, internal teeth are formed at a bottom opening of the output gear, and the internal teeth and the external teeth of the slave gear are engaged with each other.

9. A three-axis linkage type mobile phone support is characterized by comprising a shell, wherein a gear transmission mechanism and a motor driving mechanism are arranged in the shell, two transverse clamping arms and a longitudinal supporting arm are arranged on the side portion of the shell, the transverse clamping arms and the longitudinal supporting arm are distributed in a 'pin' shape, the two transverse clamping arms are respectively arranged on the left side and the right side of the shell, each transverse clamping arm is an 'L' -shaped clamping arm comprising a transverse sliding block and a vertical clamping block, the transverse sliding block is inserted into the shell and is in sliding connection with the transverse sliding block, and a transverse straight rack is formed at the end portion of the transverse sliding block;

the longitudinal supporting arm is an L-shaped supporting arm comprising a longitudinal sliding block and a vertical supporting block, the longitudinal sliding block is inserted into the shell and is connected with the shell in a sliding manner, and a longitudinal straight rack is arranged at the end part of the longitudinal sliding block;

the gear transmission mechanism comprises a main gear and a driven gear, wherein a notch is formed in the top end face of the main gear, a plurality of bayonets are formed in the inner side wall of the notch, the driven gear is located in the notch, the driven gear and the main gear are coaxially arranged, an elastic arm extending outwards is formed on the side portion of the driven gear, a convex block is formed on the elastic arm, and the convex block is clamped in the bayonets through the elastic force exerted by the elastic arm;

the motor driving mechanism comprises a motor and a reduction gear set, and a driving shaft of the motor, the reduction gear set and the main gear are in transmission fit in sequence;

the transverse straight rack and the longitudinal straight rack are respectively in transmission fit with the driven gear, and when the driven gear runs, the transverse clamping arm and the longitudinal supporting arm are driven to be away from or close to each other.

10. The three-axis linkage type mobile phone support as claimed in claim 9, wherein the slave gear is sleeved with an output gear and is engaged with the output gear, the output gear is clamped between two transverse spur racks, the two transverse spur racks are engaged with the output gear, and the longitudinal spur rack is engaged with the slave gear.