CN218998106U - Mobile phone bracket - Google Patents

Abstract

The utility model discloses a mobile phone support, which comprises a support main body, a first clamping mechanism, a second clamping mechanism and a driving mechanism; the bracket main body comprises a bracket, and the bracket is arranged at one end of the bracket main body; the first clamping mechanism comprises a first clamping arm and a first gear, the first gear is arranged in the bracket main body, and the first clamping arm is slidably arranged at one end of the bracket main body far away from the bracket and is connected with the first gear; the second clamping mechanism comprises a second gear and two second clamping arms, the second gear is arranged in the bracket main body and is coaxially arranged with the first gear, and a clamping space for clamping the mobile phone is formed between the first clamping arms, the second clamping arms and the bracket; the driving mechanism is used for driving the first clamping arms through driving the first gears and synchronously driving the two second clamping arms to be close to or far away from the bracket main body through driving the second gears. The mobile phone support can firmly clamp the mobile phone and prevent the mobile phone from falling from the upper part of the mobile phone support.

Description

Mobile phone bracket

Technical Field

The utility model relates to the technical field of supports, in particular to a mobile phone support.

Background

The mobile phone support is a product which is produced along with the wider and wider use of mobile phones, and is widely used in vehicles, electric vehicles and daily life.

The existing mobile phone support of the electric vehicle is generally composed of a left clamping arm, a right clamping arm and a bracket at the bottom, and in the process of clamping a mobile phone, the mobile phone is easy to slide out from the upper side of the mobile phone support due to the fact that the top of the mobile phone is not limited by the mobile phone support, and the clamping is unstable.

Disclosure of Invention

The utility model mainly aims to provide a mobile phone support, which aims to solve the problem of unstable clamping of the mobile phone support in the prior art.

In order to achieve the above object, the present utility model provides a mobile phone holder, which includes:

the bracket comprises a bracket body, wherein the bracket body comprises a bracket, and the bracket is arranged at one end of the bracket body;

the first clamping mechanism comprises a first clamping arm and a first gear, the first gear is arranged in the bracket main body, and the first clamping arm is slidably arranged at one end of the bracket main body far away from the bracket and is connected with the first gear;

the second clamping mechanism comprises a second gear and two second clamping arms, the second gear is arranged in the bracket main body and is coaxially arranged with the first gear, the two second clamping arms are slidably and oppositely arranged at two sides of the bracket main body, the two second clamping arms are connected with the second gear, and a clamping space for clamping a mobile phone is formed between the first clamping arm, the second clamping arm and the bracket;

the driving mechanism is used for driving the first gears to drive the first clamping arms, and driving the second gears to synchronously drive the two second clamping arms to be close to or far away from the bracket main body.

Optionally, the first clamping arm includes interconnect's first rack and first clamping part, the second clamping arm includes interconnect's second rack and second clamping part, first clamping part sets up two between the second clamping part, first rack with first gear engagement, the second rack with second gear engagement, first clamping part and two the second clamping part be used for with the bracket forms the centre gripping space.

Optionally, the first clamping portion and the second clamping portion face one side of the support main body and are provided with clamping grooves, and anti-slip pieces are arranged in the clamping grooves.

Optionally, the support main body includes face lid and base, face lid is located the base and with the base encloses into first cavity, first gear with the second gear set up in the first cavity, first rack with the second rack slidable wears to locate first cavity.

Optionally, the support main part still includes the mount pad, the mount pad lid is located the base deviates from one side of face lid and with the base encloses into the second cavity, actuating mechanism includes bulldozes arm, driving gear, driven gear and planetary gear train, the driving gear set up in the first cavity, driven gear and planetary gear train set up in the second cavity, bulldoze the arm slidable wear to locate first cavity and with the driving gear is connected, the driving gear with driven gear coaxial arrangement and interconnect, driven gear with planetary gear train's sun gear meshing, the sun gear pass through a connecting axle with the second gear is connected, first gear set up in between the second gear with planetary gear train's the ring gear and with the ring gear is connected.

Optionally, bulldoze the arm and include bulldoze the portion, bulldoze rack and elastic component, bulldoze the portion with bulldoze rack interconnect, bulldoze the rack slidable wear to locate first cavity and with the driving gear engagement, be provided with in the first cavity install in the dog of base, the both ends of elastic component respectively with bulldoze the portion with the dog butt.

Optionally, the driving gear and the driven gear are connected with each other through a transmission shaft, the driving mechanism further comprises a locking component, the locking component comprises a connecting ring, a limiting ring and a pushing frame, the connecting ring and the limiting ring are sleeved outside the transmission shaft, the limiting ring penetrates through the base, two ends of the limiting ring are respectively connected with the driving gear and the limiting ring, the limiting ring is located in the second cavity, a plurality of wedge-shaped blocks are arranged at intervals along the circumferential direction at one end of the limiting ring, a stop surface and an inclined surface are respectively formed at two sides of each wedge-shaped block, the inclined surface is inclined from the direction deviating from the driven gear towards the stop surface, limiting grooves are formed on the base, the number of the limiting grooves is consistent with that of the wedge-shaped blocks and corresponds to that of the wedge-shaped blocks, each wedge-shaped block is used for being inserted into the corresponding limiting groove, and the pushing frame is used for enabling the wedge-shaped blocks to be separated from the limiting grooves.

Optionally, the pushing frame slidable wears to locate the base and be used for with driven gear butt, the face is covered and is seted up the via hole, locking assembly still includes the button, the button passes the via hole with the pushing frame is connected.

Optionally, the locking assembly further comprises a reset spring, the connecting ring protrudes towards one end of the mounting seat to form a protruding block, the reset spring is sleeved outside the protruding block, and two ends of the reset spring are respectively used for being abutted to the limiting ring and the mounting seat.

Optionally, a connecting piece for connecting with external equipment is arranged at one end of the mounting seat, which is away from the base.

According to the technical scheme, the two second clamping arms are arranged on two sides of the support main body, and the bracket and the first clamping arms are respectively arranged on two opposite ends of the support main body, so that the upper, lower, left and right moving positions of the mobile phone can be completely fixed, the mobile phone is prevented from falling off from the mobile phone support, a user can fix the mobile phone support on external equipment such as an electric vehicle and an automobile in time in a complex road environment, and the mobile phone fixed above the mobile phone support still has enough stability and is fixed reliably.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a structure of a mobile phone holder according to an embodiment of the present utility model;

fig. 2 is a schematic structural diagram of a mobile phone support according to an embodiment of the utility model at a view angle when the mobile phone support is opened;

fig. 3 is a schematic structural diagram of a mobile phone support according to an embodiment of the present utility model at another view angle when the mobile phone support is opened;

fig. 4 is an exploded view of a mobile phone holder according to an embodiment of the present utility model;

fig. 5 is a schematic structural diagram of an explosion structure of a mobile phone holder according to an embodiment of the utility model at another view angle;

FIG. 6 is a schematic diagram of a planetary gear train in cooperation with a driving gear and a driven gear in accordance with an embodiment of the present utility model;

FIG. 7 is a schematic diagram of an embodiment of the present utility model in which a planetary gear train cooperates with a driving gear and a driven gear in another view;

FIG. 8 is a schematic diagram illustrating a structure of the base and wedge block in accordance with an embodiment of the present utility model.

Reference numerals illustrate:

the achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The technical solutions of the present embodiment will be clearly and completely described below with reference to the drawings in the present embodiment, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure.

In the present utility model, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In addition, the technical solutions of the embodiments of the present utility model may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the technical solutions, and when the technical solutions are contradictory or cannot be implemented, the combination of the technical solutions should be considered as not existing, and not falling within the scope of protection claimed by the present utility model. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

As shown in fig. 1 and 5, in order to achieve the above-mentioned object, the present utility model proposes a mobile phone holder 100, wherein the mobile phone holder 100 comprises a holder body 3, a first clamping mechanism, a second clamping mechanism and a driving mechanism, the holder body 3 comprises a bracket 30, and the bracket 30 is mounted at one end of the holder body 3; the first clamping mechanism comprises a first clamping arm 10 and a first gear 11, the first gear 11 is arranged in the bracket main body 3, and the first clamping arm 10 is slidably arranged at one end of the bracket main body 3 far away from the bracket 30 and is connected with the first gear 11; the second clamping mechanism comprises a second gear 21 and two second clamping arms 20, the second gear 21 is arranged in the bracket main body 3 and is coaxial with the first gear 11, the two second clamping arms 20 are slidably arranged on two sides of the bracket main body 3 oppositely, the two second clamping arms 20 are connected with the second gear 21, and a clamping space 101 for clamping a mobile phone is formed between the first clamping arm 10 and the second clamping arm 20 and the bracket 30; the driving mechanism is used for driving the first gear 11 to drive the first clamping arms 10, and driving the second gears 21 to synchronously drive the two second clamping arms 20 to approach or separate from the bracket main body 3.

In the technical scheme of the utility model, the bracket body 3 comprises a bracket 30, the bracket 30 is arranged at the bottom end of the bracket body 3, when a user places the mobile phone above the bracket body 3, the bottom of the mobile phone can be supported by the bracket 30, the first clamping mechanism comprises a first clamping arm 10 and a first gear 11, the first gear 11 is arranged inside the bracket body 3 and is connected with a first clamping wall, the first clamping arm 10 and the bracket 30 are oppositely arranged at two opposite ends of the bracket body 3, the first clamping arm 10 in the embodiment is arranged at the top end of the bracket body 3 and is used for limiting the top of the mobile phone, the second clamping mechanism comprises a second gear 21 and two second clamping arms 20, the two second clamping arms 20 are respectively arranged at two opposite sides of the bracket body 3, and can be understood, the two second clamping arms 20 are respectively arranged at the left end and the right end of the bracket body 3 along the transverse direction, wherein the two second clamping arms 20 are respectively connected with a second gear 21, a clamping space 101 is formed between the first clamping arm 10 and the second clamping arms 20 and the bracket 30, when the user needs to drive the bracket body 21 to move towards the first gear 11 or the second clamping arm 11 in the direction away from the first clamping mechanism, and the second clamping mechanism can be driven by the user to move towards the second gear 11 in the direction of the first clamping mechanism or the second clamping mechanism, and the second clamping mechanism can move towards the second clamping mechanism 11 in the direction of the first clamping mechanism can be far away from the first clamping mechanism 11 or the second clamping mechanism. In the process that the first clamping arm 10 and the second clamping arm 20 move towards the direction far away from the bracket main body 3, a clamping space 101 is formed between the first clamping arm 10 and the second clamping arm 20 and the bracket 30 to be enlarged, so that a user can conveniently place a mobile phone on the bracket main body 3, after the mobile phone is placed firmly, an operator can move the first clamping arm 10 and the second clamping arm 20 towards the direction close to the bracket main body 3 by controlling the driving mechanism, so that the clamping space 101 formed between the first clamping arm 10 and the second clamping arm 20 and the bracket 30 is reduced, and the mobile phone placed above the bracket main body 3 is clamped. The mobile phone support 100 in this embodiment, through setting up two second clamping arms 20 in the both sides of support main part 3, set up bracket 30 and first clamping arm 10 respectively at the opposite both ends of support main part 3 to can be with the upper and lower, left and right four removal positions of cell-phone totally fixed, prevent that the cell-phone from dropping from mobile phone support 100, make the user fix mobile phone support 100 at external equipment such as outside equipment such as electric motor car, car in time in complicated road environment, the cell-phone of fixing in mobile phone support 100 top still can have sufficient stability, fixed reliable.

Further, the first clamping arm 10 includes a first rack 102 and a first clamping portion 103 connected to each other, the second clamping arm 20 includes a second rack 202 and a second clamping portion 203 connected to each other, the first clamping portion 103 is disposed between the two second clamping portions 203, the first rack 102 is engaged with the first gear 11, the second rack 202 is engaged with the second gear 21, and the first clamping portion 103 and the two second clamping portions 203 are used to form the clamping space 101 with the bracket 30. The first rack 102 in this embodiment is meshed with the first gear 11, so that the rotation of the first gear 11 can be changed into the movement of the first rack 102, the second racks 202 are meshed with the second gear 21, and it should be noted that the number of the second racks 202 is two and are respectively arranged at the upper side and the lower side of the second gear 21, so that the second gears 21 can rotate clockwise or anticlockwise, the second clamping arms 20 respectively arranged at the two sides of the bracket main body 3 can move relatively or reversely, and the mobile phone can be clamped, wherein the first gear 11 and the second gears 21 are coaxially arranged, and the second gears 21 can rotate synchronously with the first gears 11 in the rotation process of the first gears 11.

Further, the first clamping portion 103 and the second clamping portion 203 are provided with a clamping groove 104 on a side facing the bracket main body 3, and an anti-slip member 105 is provided in the clamping groove 104. By opening the clamping groove 104 on one side of the first clamping portion 103 and the second clamping portion 203, which faces the bracket main body 3, the mobile phone can be clamped into the clamping groove 104 after being clamped, and the anti-slip piece 105 is arranged in the clamping groove 104, so that the mobile phone can be prevented from sliding in the clamping groove 104 after being clamped, the stability of the mobile phone bracket 100 of the embodiment is improved, and it is noted that the bracket 30 comprises a bracket main body 301 and two bearing portions 302 connected to the bracket main body 301, and the two bearing portions 302 are arranged along the transverse interval. Wherein, the draw-in groove 104 has been seted up to bearing portion 302 to also be provided with anti-skidding piece 105 in the draw-in groove 104 of bearing portion 302, anti-skidding piece 105 can adopt silica gel or other material that has anti-skidding nature, because the mouth that charges of cell-phone generally sets up in the bottom of cell-phone, two bearing portion 302 interval settings can make to form between two bearing portion 302 and be used for supplying the line mouth of crossing that charges, charges when making things convenient for the cell-phone to be fixed in cell-phone support 100.

Specifically, the bracket body 3 includes a cover 31 and a base 32, the cover 31 is covered on the base 32 and encloses a first cavity 320 with the base 32, the first gear 11 and the second gear 21 are disposed in the first cavity 320, and the first rack 102 and the second rack 202 slidably penetrate through the first cavity 320. One side of face lid 31 deviating from base 32 is used for with the cell-phone butt, face lid 31 encloses into first cavity 320 with base 32, wherein the opening with first cavity 320 intercommunication has all been seted up at the both sides and the top of base 32, make things convenient for first rack 102 and second rack 202 to pass and stretch into in the first cavity 320, first gear 11 and the equal rotatable setting of second gear 21 are inside first cavity 320, first rack 102 stretches into in the first cavity 320 with first gear 11 meshing, second rack 202 stretches into in the first cavity 320 with second gear 21 meshing, the structure setting is reasonable.

More specifically, the support body 3 further includes a mounting seat 33, the mounting seat 33 is covered on a side of the base 32 facing away from the face cover 31 and encloses a second cavity 330 with the base 32, the driving mechanism includes a pushing arm 40, a driving gear 41, a driven gear 42 and a planetary gear train 43, the driving gear 41 is disposed in the first cavity 320, the driven gear 42 and the planetary gear train 43 are disposed in the second cavity 330, the pushing arm 40 slidably penetrates through the first cavity 320 and is connected with the driving gear 41, the driving gear 41 and the driven gear 42 are coaxially disposed and connected with each other, the driven gear 42 is meshed with a sun gear 430 of the planetary gear train 43, the sun gear 430 is connected with the second gear 21 through a connecting shaft 434, and the first gear 11 is disposed between the second gear 21 and a gear ring 432 of the planetary gear train 43 and is connected with the gear ring gear 432. The pressing arm 40 includes a pressing portion 401, a pressing rack 402, and an elastic member 403, the pressing portion 401 and the pressing rack 402 are connected to each other, the pressing rack 402 slidably penetrates the first cavity 320 and engages with the driving gear 41, a stopper 404 attached to the base 32 is provided in the first cavity 320, and both ends of the elastic member 403 are respectively abutted against the pressing portion 401 and the stopper 404. As shown in fig. 1, the pushing arm 40 extends out relative to the base 32 in the process that the first clamping arm 10 and the second clamping arm 20 are in a clamping state, when a user needs to open the mobile phone support 100 and place the mobile phone above the mobile phone support 100, only the pushing part needs to be pressed, the pushing part 401 drives the pushing rack 402 connected with the pushing part to move towards the direction close to the base 32 and enables the driving gear 41 to rotate, the driving gear 41 synchronously drives the driven gear 42 meshed with the driving gear 41 to rotate in the rotating process, wherein, referring to fig. 6 and 7, the planetary gear train comprises a sun gear 430, a planet carrier 431, a planet pinion 433 and a gear ring 432, the specific structure and the transmission mode of the planet gear can refer to the prior art, the driven gear 42 drives the sun gear 430 meshed with the sun gear 430 to rotate in the rotating process, the sun gear 430 drives the planet carrier 431 and the gear ring 432 to rotate in the rotating process, the gear ring gear 432 is connected with the first gear 11, and the sun gear 432 drives the first gear 11 to rotate in the rotating process, and meanwhile, the sun gear 430 is connected with the second gear 21 through a connecting shaft 434, and the sun gear 430 can also drive the sun gear 21 to move towards the second clamping arm 21 in the rotating direction away from the first clamping arm 20. The number of the pushing arms 40 is two, and the two pushing arms 40 are respectively arranged at two sides of the base 32. It can be appreciated that the first cavity 320 is provided with a stop 404 mounted on the base 32, and the elastic member 403 is disposed between the stop 404 and the pressing portion 401 and is respectively abutted against the stop 404 and the pressing portion 401, so that after the pressing portion 401 is pressed by an operator, the elastic member 403 is compressed and stores elastic potential energy, and when the pressing portion 401 is stopped by the user, the pressing portion 401 is moved away from the base 32 by the elastic member 403, so as to drive the first clamping portion 103 and the second clamping portion 203 to move towards a direction approaching the base 32, thereby clamping the mobile phone holder 100.

In an embodiment, the driving gear 41 and the driven gear 42 are connected with each other through a transmission shaft 44, the driving mechanism further comprises a locking assembly, the locking assembly comprises a connecting ring 450, a limiting ring 451 and a pushing frame 452, the connecting ring 450 and the limiting ring 451 are sleeved outside the transmission shaft 44, the limiting ring 451 is arranged on the base 32 in a penetrating mode, two ends of the limiting ring 451 are respectively connected with the driving gear and the limiting ring 451, the limiting ring 451 is located in the second cavity 330, a plurality of wedge-shaped blocks 4510 are arranged at intervals along the circumferential direction at one end of the limiting ring 451, a stop surface 4511 and an inclined surface 4512 are respectively formed at two sides of the wedge-shaped blocks 4510, the inclined surface 4512 is inclined towards the stop surface 4511 from a direction deviating from the driven gear 42, limiting grooves 320 are formed on the support body 3, the number of the limiting grooves 320 is consistent with that of the wedge-shaped blocks 4510 and corresponds to one by one, each wedge-shaped block 4510 is used for being inserted into a corresponding limiting groove 320, and the pushing frame 452 is used for enabling the wedge-shaped blocks 4510 to be separated from the limiting grooves 320. The driving gear 41 and the driven gear 42 are connected through the transmission shaft 44, so that when the driving gear 41 rotates, the driven gear 42 can be driven by the transmission shaft 44 to rotate, the connecting ring 450 penetrates through the base 32, two ends of the connecting ring 450 are respectively located in the first cavity 320 and the second cavity 330, one end of the limiting ring 451 is connected with one end of the connecting ring 450, which is close to the second cavity 330, both the limiting ring 451 and the connecting ring 450 are sleeved outside the transmission shaft 44, the driving gear 41 can synchronously drive the limiting ring 451 and the connecting ring 450 to rotate in the rotating process, one end of the limiting ring 451, which faces the base 32, is provided with a plurality of wedge-shaped blocks 4510 along the circumferential direction, the wedge-shaped blocks 4510 are used for being inserted into corresponding limiting grooves 320, after the wedge-shaped blocks 4510 are inserted into the limiting grooves 320, the stop surfaces 4511 are abutted with groove walls of the limiting grooves 320, so that one rotating direction of the limiting ring 451 is limited, and the driving gear can only rotate along one direction, as shown in fig. 8, the rotating direction and the inclined surface 4512 deviate from the direction of the stop surfaces 4511, so that an operator can push the first arm 40 and the second arm 40 to push the first arm 20 to the operator, and the second arm 40 to the operator can push the first arm 20, and the user can push the user 20, and the user can not push the first arm 20 to push the arm 20, and the user can push the user to the user. Wherein, pushing rack 452 slidable wears to locate base 32 and is used for with driven gear 42 butt, has offered via hole 311 on the face lid 31, and locking assembly still includes button 312, and button 312 passes via hole 311 and is connected with pushing rack 452. The user can push the button 312, so that the pushing rack 452 pushes the driven gear 42 to move in a direction away from the base 32, and further drives the limiting ring 451 connected with the driven gear 42 to move in a direction away from the base 32, so that the wedge 4510 is separated from the limiting groove 320, and the rotation restriction of the driven gear 42 is released, so that the first clamping arm 10 and the second clamping arm 20 can clamp the mobile phone. Note that the groove depth of the limiting groove 320 is smaller than the tooth thickness of the sun gear 430 and the driven gear 42, so as to prevent the driven gear 42 from being disengaged from the sun gear 430.

Further, the locking assembly further comprises a return spring 453, the connecting ring 450 protrudes towards one end of the mounting seat 33 to form a protruding block 4501, the return spring 453 is sleeved outside the protruding block 4501, and two ends of the return spring 453 are respectively used for being abutted against the limiting ring 451 and the mounting seat 33. By providing the return spring 453, it is possible to enable the user to return the button 312 by the elastic force of the return spring 453 itself after pressing the button 312.

In one embodiment, the end of the mounting base 33 facing away from the base 32 is provided with a connector 34 for connection with external equipment. The connector 34 includes a ball groove 341 and a fastening nut 342, the ball groove 341 is provided with a notch thread, the fastening nut 342 is used for being in threaded connection with the ball groove 341, and the mobile phone holder 100 in the present embodiment can be connected to an external device by providing the connector 34.

The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims (10)

1. A cell phone stand, characterized in that, cell phone stand includes:

the bracket comprises a bracket body, wherein the bracket body comprises a bracket, and the bracket is arranged at one end of the bracket body;

the first clamping mechanism comprises a first clamping arm and a first gear, the first gear is arranged in the bracket main body, and the first clamping arm is slidably arranged at one end of the bracket main body far away from the bracket and is connected with the first gear;

the second clamping mechanism comprises a second gear and two second clamping arms, the second gear is arranged in the bracket main body and is coaxially arranged with the first gear, the two second clamping arms are slidably and oppositely arranged at two sides of the bracket main body, the two second clamping arms are connected with the second gear, and a clamping space for clamping a mobile phone is formed between the first clamping arm, the second clamping arm and the bracket;

the driving mechanism is used for driving the first gears to drive the first clamping arms, and driving the second gears to synchronously drive the two second clamping arms to be close to or far away from the bracket main body.

2. The cell phone stand of claim 1, wherein the first clamping arm includes a first rack and a first clamping portion connected to each other, the second clamping arm includes a second rack and a second clamping portion connected to each other, the first clamping portion is disposed between the two second clamping portions, the first rack is engaged with the first gear, the second rack is engaged with the second gear, and the first clamping portion and the two second clamping portions are used to form the clamping space with the bracket.

3. The mobile phone holder according to claim 2, wherein the first clamping portion and the second clamping portion are provided with clamping grooves on one sides facing the holder main body, and an anti-slip member is arranged in the clamping grooves.

4. The mobile phone holder according to claim 2, wherein the holder body comprises a cover and a base, the cover is disposed on the base and encloses a first cavity with the base, the first gear and the second gear are disposed in the first cavity, and the first rack and the second rack slidably penetrate through the first cavity.

5. The phone holder according to claim 4, wherein the holder body further comprises a mounting seat, the mounting seat is covered on one side of the base away from the cover and encloses a second cavity with the base, the driving mechanism comprises a pushing arm, a driving gear, a driven gear and a planetary gear train, the driving gear is arranged in the first cavity, the driven gear and the planetary gear train are arranged in the second cavity, the pushing arm slidably penetrates through the first cavity and is connected with the driving gear, the driving gear and the driven gear are coaxially arranged and are mutually connected, the driven gear is meshed with a sun gear of the planetary gear train, the sun gear is connected with the second gear through a connecting shaft, and the first gear is arranged between the second gear and a gear ring of the planetary gear train and is connected with the gear ring.

6. The mobile phone holder according to claim 5, wherein the pushing arm includes a pushing portion, a pushing rack and an elastic member, the pushing portion is connected with the pushing rack, the pushing rack slidably penetrates through the first cavity and is engaged with the driving gear, a stopper mounted on the base is disposed in the first cavity, and two ends of the elastic member are respectively abutted against the pushing portion and the stopper.

7. The mobile phone holder according to claim 6, wherein the driving gear and the driven gear are connected with each other through a transmission shaft, the driving mechanism further comprises a locking assembly, the locking assembly comprises a connecting ring, a limiting ring and a pushing frame, the connecting ring and the limiting ring are sleeved outside the transmission shaft, the limiting ring is arranged on the base in a penetrating manner, two ends of the limiting ring are respectively connected with the driving gear and the limiting ring, the limiting ring is located in the second cavity, a plurality of wedge-shaped blocks are arranged at one end of the limiting ring, which faces the base, along the circumferential direction at intervals, a stop surface and an inclined surface are respectively formed at two sides of the wedge-shaped blocks, the inclined surface is inclined from the direction, which faces the stop surface, the base is provided with limiting grooves, the number of the limiting grooves is consistent with the number of the wedge-shaped blocks, the limiting grooves are in one-to-one correspondence, the wedge-shaped blocks are used for being inserted into the corresponding limiting grooves, and the pushing frame is used for enabling the wedge-shaped blocks to be separated from the limiting grooves.

8. The mobile phone holder of claim 7, wherein the pushing frame slidably penetrates through the base and is used for abutting against the driven gear, the face cover is provided with a through hole, and the locking assembly further comprises a button, and the button penetrates through the through hole and is connected with the pushing frame.

9. The mobile phone holder according to claim 8, wherein the locking assembly further comprises a return spring, the connecting ring protrudes toward one end of the mounting seat to form a protruding block, the return spring is sleeved outside the protruding block, and two ends of the return spring are respectively used for being abutted with the limiting ring and the mounting seat.

10. The mobile phone holder according to any one of claims 5 to 9, wherein a connector for connection with an external device is provided at an end of the mount facing away from the base.

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