CN213920885U

CN213920885U - Steady and stable locking bracket

Info

Publication number: CN213920885U
Application number: CN202022695357.XU
Authority: CN
Inventors: 余建顺; 潘龙
Original assignee: Shenzhen Ranvoo Technology Co Ltd
Current assignee: Shenzhen Ranvoo Technology Co Ltd
Priority date: 2020-11-19
Filing date: 2020-11-19
Publication date: 2021-08-10
Anticipated expiration: 2030-11-19

Abstract

The utility model provides a bracket capable of being stably locked, which comprises a bracket main body and a connecting part, wherein the connecting part is connected with one side of the bracket main body and is used for connecting electronic equipment, the bracket main body comprises a shell, a fixed clamping arm arranged at one end of the shell, a movable clamping arm movably connected with the other end of the shell and a locking mechanism arranged on the shell, the fixed clamping arm and the movable clamping arm are matched to clamp the bracket on an adapted object, the locking mechanism comprises a gear transmission component and can be switched between an opening state and a closing state, so that the movable clamping arm moves or is fixed relative to the fixed clamping arm, in the process that the locking mechanism is switched from the opening state to the closing state, the gear transmission component can drive the movable clamping arm to move towards the shell for a certain distance to lock the movable clamping arm, to prevent the movable clamp arm from loosening.

Description

Steady and stable locking bracket

Technical Field

The utility model relates to an on-vehicle support technical field, in particular to support that can stabilize locking.

Background

The existing bracket base is usually adsorbed on the surface of an automobile console by means of a sucker structure or 3M viscose, but the adsorption structure is usually affected by factors such as temperature, the material of the adsorption surface and the like, so that the adhesion force is not stable enough; or the air outlet clip is clamped and fixed on the air outlet blade.

However, with the development of automobile design, some existing automobile models adopt a through design of an air conditioner air outlet, that is, the air conditioner air outlet transversely extends to a co-driver seat from the driver seat, so that the air outlet is relatively long and narrow, and no blade can clamp the air outlet, so that the traditional bracket base is not suitable for use.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a support that can stabilize locking not only can the above-mentioned air outlet structure of adaptation, can also strengthen the stability of centre gripping.

In an embodiment, the gear drive subassembly includes the driving medium and rotates the piece, the driving medium with rotate the piece drive connection with the drive rotate the piece and rotate, work as rotate the piece and rotate when first preset position, rotate the piece with activity centre gripping arm leaves, activity centre gripping arm can be relative fixed centre gripping arm activity works as rotate when the second preset position, rotate the piece with the meshing of activity centre gripping arm, activity centre gripping arm is relative fixed centre gripping arm is fixed.

In an embodiment, the locking mechanism further includes a locking switch, the locking switch is rotatably connected to the transmission member, the locking switch is rotatable between an open position and a closed position, and the locking switch drives the transmission member to move in the longitudinal direction of the housing when rotating between the open position and the closed position, so as to drive the rotation member to rotate.

In an embodiment, the driving medium is provided with a driving position, a driving rack is arranged on the side wall of the driving position, the rotating part faces one side of the driving medium and is provided with a gear, a pivoting column is arranged in the shell and is rotatably sleeved on the pivoting column, the pivoting column is located in the driving position, and the gear extends into the driving position and is in driving connection with the driving rack.

In an embodiment, a matching cavity is formed in the shell, the movable clamping arm comprises two connecting arms, the two connecting arms are arranged at intervals, slots matched with the connecting arms in a movable splicing mode are formed between two sides of the matching cavity and the side wall of the shell, the pivoting column and the transmission part are located in the matching cavity, tooth parts are arranged on the peripheral wall of the rotating part, and racks matched with the tooth parts in a meshing mode are arranged on the inner side wall of the connecting arm.

In one embodiment, the peripheral wall of the rotating member includes a major arc portion and a minor arc portion, the tooth portion is convexly disposed on the minor arc portion, when the rotating member rotates to a first preset position, the major arc portion is close to the rack and the tooth portion is separated from the rack, and when the rotating member rotates to a second preset position, the minor arc portion is close to the rack and the tooth portion is engaged with the rack.

In an embodiment, a first reset member is disposed between the housing and the connecting arm, the first reset member is used for providing an elastic force for pulling the movable clamping arm back into the housing, and a second reset member is disposed between the housing and the transmission member, and the second reset member is used for providing a pressure for fixing the transmission member relative to the housing.

In an embodiment, a switch accommodating groove is formed in the shell, a through hole is formed in one end of the switch accommodating groove, the locking switch is rotatably arranged in the switch accommodating groove, a rotating portion is arranged on the locking switch, the transmission member is provided with a pivoting portion, and the rotating portion extends into the shell from the through hole and is rotatably connected with the pivoting portion, so that when the locking switch rotates between the opening position and the closing position, the transmission member is driven to move in the length direction of the shell.

In an embodiment, the rotating portion is provided with a first stopping surface and a second stopping surface which are adjacent to each other, a vertical distance between a center of a rotating shaft of the rotating portion and the first stopping surface is smaller than a vertical distance between the center of the rotating shaft of the rotating portion and the first stopping surface, when the locking switch is located at the opening position, the first stopping surface abuts against an outer side surface of the end wall of the matching cavity, the bracket is in an unlocking state, and the movable clamping arm can move relative to the fixed clamping arm; when the locking switch is located at the closing position, the second stop surface is abutted to the outer side surface of the end wall of the matching cavity, the support is in a locking state, and the movable clamping arm is fixed relative to the fixed clamping arm.

In an embodiment, the movable clamping arm has a first hook portion, the fixed clamping arm has a second hook portion, a clamping space is formed between the first hook portion and the second hook portion, and an extending direction of the first hook portion and an extending direction of the second hook portion form a preset angle.

To sum up, the utility model provides a support that can stabilize locking, but through locking mechanism control activity centre gripping arm relatively fixed centre gripping arm fixed or activity to the centre gripping is stabilized to the size in adjustment centre gripping space, and switches to the in-process of closed condition from the open condition when locking mechanism, can drive activity centre gripping arm and remove the certain distance towards the casing and just lock activity centre gripping arm, in order to prevent that activity centre gripping arm is not hard up. The holder is clamped by the fixed and movable clamping arms to an adapted object, for example, at a location of an automobile air outlet without blades. The structure of first portion of colluding and the second portion of colluding can be to the automobile design of tesla brand model3 model to the well accuse platform air outlet type that adapts to this motorcycle type is rectangular shape, and does not have the design of air conditioner blade, and first portion of colluding is used for stretching into in long and narrow air outlet, and the second portion of colluding is used for supporting and holds at well accuse platform panel edge, and the extending direction of first portion of colluding is preset the angle with the extending direction of second portion of colluding, thereby realizes firm centre gripping. The utility model discloses a support easy operation, the structure is firm, and the practicality is strong, is suitable for popularization and application.

Drawings

Fig. 1 is a partially exploded view of the bracket of the present invention.

Fig. 2 is a further exploded view of the stent of fig. 1.

Detailed Description

Before the embodiments are described in detail, it is to be understood that the invention is not limited in its application to the details of construction and the arrangements of components set forth in the following description or illustrated in the drawings. The utility model discloses can be the embodiment that other modes realized. Also, it is to be understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting. The use of "including," "comprising," "having," and the like, herein is meant to encompass the items listed thereafter and equivalents thereof as well as additional items. In particular, when "a certain element" is described, the present invention is not limited to the number of the element being one, and may include a plurality of the elements.

As shown in fig. 1-2, the utility model provides a can stabilize support 10 of locking, this support 10 includes the support main part and connects in the connecting portion of support main part one side, and connecting portion can be used to connect an electronic equipment, and this electronic equipment can be cell-phone, panel computer etc.. The support main part includes the casing, locates the fixed centre gripping arm 14 of casing one end, swing joint in the activity centre gripping arm 16 of casing other end and locates the locking mechanism of casing, and fixed centre gripping arm 14 cooperates with activity centre gripping arm 16 and can be with support 10 centre gripping on the article of adaptation, for example the centre console air outlet department of the car of Tesla model3 model.

The connecting part comprises a supporting arm 18, a telescopic rod, a telescopic adjusting piece 22 and a universal ball 24, wherein the supporting arm 18 is obliquely arranged at the end part of one side surface of the shell, and the supporting arm 18 and the shell can be integrally formed. Be equipped with tip open-ended cavity in the support arm 18, the telescopic link activity is located in the cavity, and flexible regulating part 22 sets up at support arm 18 tip, and universal ball 24 is fixed in the tip of telescopic link and exposes outside the open end of support arm 18 to be connected with electronic equipment, for example electronic equipment is equipped with the connection structure with universal ball 24 adaptation, makes the position and the orientation of adjustable electronic equipment after connecting. The telescopic adjustment member 22 is used to adjust the length of the telescopic rod extending out of the support arm 18.

In the illustrated embodiment, the telescoping adjustment member 22 is provided in a knob-type configuration. Specifically, the telescopic adjusting part 22 is rotatably disposed at an end of the supporting arm 18, and a matching thread structure is disposed between the telescopic adjusting part 22 and the telescopic rod, so that the telescopic rod can be driven to move axially along the supporting arm 18 by rotating the telescopic adjusting part 22, and further the distance between the electronic device and the support 10 can be adjusted.

It should be understood that in other embodiments, the universal ball 24 may be implemented with other connection structures, and the present invention is not limited thereto. In other embodiments, the connecting portion may also be implemented as other connecting structures, for example, as elastically retractable clip arms or the like. In other embodiments, the telescopic adjustment member 22 may be implemented in other adjustment structures as long as the telescopic rod can be adjusted to extend out of the support arm 18.

In the illustrated embodiment, the fixed clamp arm 14 and the movable clamp arm 16 are disposed on the opposite side of the housing from the support arm 18, with the fixed clamp arm 14 being integrally formed with the housing. In particular, the fixed gripper arm 14 is located at the end of the housing where the support arm 18 is located, the end of the housing being bent towards the side facing away from the support arm 18 and forming the fixed gripper arm 14. The movable clamping arm 16 has a first hook 26, the first hook 26 is toothed, the fixed clamping arm 14 has a second hook 28, a clamping space is formed between the first hook 26 and the second hook 28, and an extending direction of the first hook 26 and an extending direction of the second hook 28 form a predetermined angle. When the bracket 10 is clamped at the air outlet of the console of the tesla model3, since the air outlet of the vehicle is in a strip shape and has no air conditioner blade design, the first hook 26 can extend into the long and narrow air outlet, and the second hook 28 is supported on the edge of the console panel, thereby realizing stable clamping.

The locking mechanism comprises a gear transmission assembly and can be switched between an opening state and a closing state, and when the locking mechanism is in the opening state, the movable clamping arm 16 can move relative to the fixed clamping arm 14; when the latch mechanism is in the closed position, the movable clamp arm 16 is fixed relative to the fixed clamp arm 14. During the process of switching the locking mechanism from the open state to the closed state, the gear transmission assembly drives the movable clamping arm 16 to move a certain distance towards the housing so as to lock and fix the movable clamping arm 16, thereby preventing the movable clamping arm 16 from loosening. A first reset element is arranged between the housing and the movable clamping arm 16, and the first reset element is preferably a tension spring and is used for providing elastic force for pulling the movable clamping arm 16 back into the housing, and the elastic force can provide clamping pretightening force.

In the illustrated embodiment, the gear assembly includes a drive member 34 and a rotatable member 86, and the locking mechanism further includes a locking switch 32, wherein the locking switch 32 is disposed on the housing and the drive member 34 and the rotatable member 86 are disposed within the housing. The lock switch 32 is rotatably connected to the transmission member 34, and the transmission member 34 is drivingly connected to the rotating member 86 to drive the rotating member 86 to rotate.

The locking switch 32 is rotatable between an open position and a closed position, when the locking switch 32 is in the open position, the locking mechanism is in the open state, the rotating member 86 rotates to a first preset position, at this time, the rotating member 86 is completely separated from the movable clamping arm 16, and the movable clamping arm 16 can move relative to the fixed clamping arm 14; when the locking switch 32 is in the closed position, the locking mechanism is in the closed position and the rotatable member 86 is rotated to a second predetermined position, wherein the rotatable member 86 engages the movable retaining arm 16 and the movable retaining arm 16 is fixed relative to the fixed retaining arm 14.

In the illustrated embodiment, the housing is provided with a switch receiving groove (not shown), the switch receiving groove and the support arm 18 are located on the same side of the housing, and the locking switch 32 is rotatably provided in the switch receiving groove. When the locking switch 32 is located at the open position, the locking switch 32 rotates to the outside of the switch accommodating groove; when the locking switch 32 is located at the closed position, the locking switch 32 is closed in the switch accommodating groove.

Preferably, the length of the locking switch 32 is smaller than the length of the switch accommodating groove, so that a handle position is formed between the movable end of the locking switch 32 and the corresponding end wall of the switch accommodating groove, which is convenient for a user to operate the locking switch 32.

The bottom of one end of the locking switch 32 is provided with two rotating parts 42, the two rotating parts 42 are in a block shape, the two rotating parts 42 are respectively positioned at two sides of the end part of the locking switch 32, and the rotating parts 42 are provided with shaft holes. A through hole 44 is provided at the bottom of the switch receiving channel near the end of the support arm 18 for the rotating portion 42 to pass through. The transmission member 34 has a pivot portion 46 at one end, the pivot portion 46 has a shaft hole, when connecting, the two rotation portions 42 are respectively connected to two sides of the pivot portion 46 and make the respective shaft holes aligned, and the rotation portion 42 extends into the housing from the through hole 44 and is rotatably connected with the pivot portion 46 through the shaft hole. An abutting portion is disposed at an end of the through hole 44 close to the supporting arm 18, and when the locking switch 32 rotates between the open position and the closed position, an outer side wall of the rotating portion 42 is abutted by the abutting portion, so that the rotating shaft moves back and forth in the length direction of the housing, that is, the driving member 34 is driven to move back and forth in the length direction of the housing when the locking switch 32 rotates between the open position and the closed position.

The transmission member 34 is drivingly connected to the rotating member 86, and preferably, a transmission position 88 is disposed on a side of the transmission member 34 away from the pivot portion 46, the transmission position 88 is, for example, a through hole penetrating through upper and lower surfaces of the transmission member 34, and a transmission rack 90 is disposed on a side wall of the transmission position 88. The rotating member 86 is circular, a gear 92 is disposed at a central portion of one side of the rotating member 86 facing the transmission member 34, a shaft hole is disposed at a central position of the rotating member 86, a pivot post 94 is disposed in the housing, the pivot post 94 is disposed in the transmission position 88, the rotating member 86 is rotatably sleeved on the pivot post 94 through the shaft hole, and the gear 92 extends into the transmission position 88 and is in transmission connection with, i.e., meshed with, the transmission rack 90. The drive member 34 is capable of driving the rotation member 86 to rotate when moved along the length of the housing, thereby engaging and disengaging the rotation member 86 with the movable clamping arm 16.

In the illustrated embodiment, the housing includes a top shell 12a and a bottom shell 12b that are removably coupled, such as by a screw-on or snap-on connection, with a coupling and locking switch 32 disposed on the top shell 12 a.

The lower surface of the upper shell 12a is provided with surrounding walls which surround to form a mating cavity 56. Pivot post 94 and driver 34 are located within mating cavity 56, for example, pivot post 94 is secured to a top wall of mating cavity 56. One end of the movable clamping arm 16 close to the matching cavity 56 is provided with two connecting arms 96, the two connecting arms 96 are arranged at two sides of the end part of the movable clamping arm 16 at intervals, and the inner side wall of one movable clamping arm 16 is provided with a rack 98. Slots 100 which are movably inserted and matched with the two connecting arms 96 are respectively formed between the two sides of the matching cavity 56 and the side wall of the shell. The peripheral wall of the rotating member 86 is provided with a tooth portion 102 engaged with the rack 98, and the side of the engaging chamber 56 corresponding to the rack 98 is provided with an opening so that the tooth portion 102 can pass through the opening to engage with the rack 98.

More specifically, the peripheral wall of the rotation member 86 includes a major arc portion 36 and a minor arc portion 38, and the tooth portion 102 is provided to project from the minor arc portion 38. When the lock switch 32 is rotated between the open position and the closed position, the driving member 34 is moved along the length of the housing to drive the rotation member 86 to rotate. When the rotating member 86 rotates to the first preset position, the major arc portion 36 is close to the rack 98 and the tooth portion 102 is separated from the rack 98, at this time, the locking switch 32 is located at the open position, the locking mechanism is in the open state, the rotating member 86 is completely separated from the movable clamping arm 16, and the movable clamping arm 16 can move relative to the fixed clamping arm 14; when the rotating member 86 is rotated to the second predetermined position, the minor arc portion 38 is close to the rack 98 and the tooth portion 102 is engaged with the rack 98, and the locking switch 32 is in the closed position, the locking mechanism is in the closed state, the rotating member 86 is engaged with the movable clamping arm 16, and the movable clamping arm 16 is fixed relative to the fixed clamping arm 14.

The bottom of the connecting arm 96 is provided with a receiving groove 104 for receiving the first resetting piece, the receiving groove 104 penetrates through one end of the connecting arm 96 facing the housing, and two ends of the first resetting piece are fixed to the receiving groove 104 and the slot 100 respectively. In the illustrated embodiment, a fixing block 106 is disposed at an end of the receiving groove 104 away from the engaging cavity 56, a third fixing post 108 is disposed at an end of the inserting groove 100 away from the movable clamping arm 16, and two ends of the first resetting member are respectively fixed to the fixing block 106 and the third fixing post 108.

A second restoring element, preferably a compression spring, is provided between the housing and the transmission element 34 for providing a pressure force for fixing the transmission element 34 relative to the housing. More specifically, the end wall of the engaging cavity 56 on the side away from the movable clamping arm 16 is provided with a stop portion 76, two sides of the stop portion 76 are provided with notches, the transmission member 34 is provided with a mounting position 78, and the mounting position 78 is located between the pivot portion 46 and the transmission position 88. During assembly, the transmission member 34 is connected to the stopping portion 76, so that the stopping portion 76 extends into the mounting portion 78, the connecting rods on two sides of the mounting portion 78 are respectively accommodated in the notches on two sides of the stopping portion 76, the pivoting portion 46 and the rotating portion 42 are located outside the stopping portion 76, and other portions of the transmission member 34 are located in the matching cavity 56. The second restoring member is disposed in the mounting portion 78, and the second restoring member abuts between the stopping portion 76 and an end wall of the mounting portion 78 on a side away from the pivot portion 46.

Preferably, a positioning column 80 is disposed on an end wall of the mounting portion 78 on a side away from the pivot portion 46, and a corresponding end of the second resetting member is sleeved on the positioning column 80, so as to enhance the connection stability of the second resetting member. When the lock switch 32 rotates to drive the transmission member 34 to move, the pressure of the second reset member can fix the transmission member 34, so that the transmission member 34 and the lock switch 32 are fixed relative to the housing.

The rotating portion 42 has a first stopping surface 82 and a second stopping surface 84 adjacent to each other, wherein the first stopping surface 82 is disposed at the bottom of the rotating portion 42, and the second stopping surface 84 is disposed at a side of the rotating portion 42 facing the stopping portion 76. When the locking switch 32 is in the open position, the first stop surface 82 abuts against the outer side surface of the end wall of the matching cavity 56, the bracket 10 is in the unlocked state, and the movable clamping arm 16 can move relative to the fixed clamping arm 14; when the locking switch 32 is in the closed position, the second stop surface 84 abuts the outer side surface of the end wall of the mating cavity, the holder 10 is in the locked state, and the movable holding arm 16 is fixed relative to the fixed holding arm 14.

It should be understood that in other embodiments, the positions of the rotating part 42 and the pivoting part 46 on the locking switch 32 and the transmission member 34 can be interchanged, and when the locking switch 32 is located at the open position, the first stop surface 82 abuts against the outer side surface of the stop part 76; when the locking switch 32 is in the closed position, the second stop surface 84 abuts the outer side surface of the stop portion 76.

It should be noted that the toothed portion 102 is disengaged from the rack 92 when the lock switch 32 is in the open position, regardless of whether the movable clamp arm 16 protrudes outside the housing. At this time, the user can manually pull the movable clamping arm 16 out of the housing, clamp the first hook 26 and the second hook 28 in place, and clamp the first reset member by the pulling force of the first reset member to fix the cradle.

The center of the rotation axis of the rotation portion 42, i.e., the center of the axial hole thereof, is located at a shorter vertical distance from the first stopping surface 82 than the second stopping surface 84. During the process that the locking switch 32 is screwed into the switch accommodating groove and is rotated from the open position to the closed position, the rotating portion 42 drives the transmission member 34 to move in the direction away from the movable clamping arm 16, the transmission member 34 drives the gear 92 to rotate clockwise through the transmission rack 90, and the tooth portion 102 rotates along with the clockwise rotation until the transmission member is meshed with the rack 92, so that locking is realized. Because the vertical distances from the first stopping surface 82 and the second stopping surface 84 of the rotating part 42 to the center of the rotating shaft are different, after the tooth part 102 is meshed with the rack 92, the locking switch 32 can be pressed into the switch accommodating groove, and simultaneously, the movable clamping arm 16 can be pulled into the shell for a certain distance, so that the movable clamping arm 16 can be clamped more stably, and the problem that the clamping arm is unstable and loosened due to the fatigue of the first resetting piece can be avoided.

The utility model discloses a support 10 simple structure, and connect between the part closely, can also let locking state more stable through the dentate drive structure who rotates 86, can not take off because the car jolts the pine.

To sum up, the utility model provides a support that can stabilize locking, but through locking mechanism control activity centre gripping arm relatively fixed centre gripping arm fixed or activity to the centre gripping is stabilized to the size in adjustment centre gripping space, and switches to the in-process of closed condition from the open condition when locking mechanism, can drive activity centre gripping arm and remove the certain distance towards the casing and just lock activity centre gripping arm, in order to prevent that activity centre gripping arm is not hard up. The holder is clamped by the fixed and movable clamping arms to an adapted object, for example, at a location of an automobile air outlet without blades. The structure of first portion of colluding and the second portion of colluding can be designed to Tesla model3 to the well accuse platform air outlet type that adapts to this motorcycle type is rectangular shape, and does not have the design of air conditioner blade, and first portion of colluding is used for stretching into in long and narrow air outlet, and the second portion of colluding is used for supporting and holds at well accuse platform panel edge, and the extending direction of first portion of colluding is preset the angle with the extending direction of second portion of colluding, thereby realizes firm centre gripping. The utility model discloses a support easy operation, the structure is firm, and the practicality is strong, is suitable for popularization and application.

The concepts described herein may be embodied in other forms without departing from the spirit or characteristics thereof. The particular embodiments disclosed should be considered illustrative rather than limiting. The scope of the invention is, therefore, indicated by the appended claims rather than by the foregoing description. Any changes which come within the meaning and range of equivalency of the claims are to be embraced within their scope.

Claims

1. A support capable of being locked stably comprises a support main body and a connecting portion, wherein the connecting portion is connected to one side of the support main body and used for connecting electronic equipment, the support main body comprises a shell, a fixed clamping arm arranged at one end of the shell, a movable clamping arm movably connected to the other end of the shell and a locking mechanism arranged on the shell, the fixed clamping arm and the movable clamping arm are matched to clamp the support on a matched object, the locking mechanism comprises a gear transmission assembly and can be switched between an opening state and a closing state, so that the movable clamping arm moves or is fixed relative to the fixed clamping arm, in the process that the locking mechanism is switched from the opening state to the closing state, the gear transmission assembly can drive the movable clamping arm to move towards the shell for a certain distance to lock the movable clamping arm, to prevent the movable clamp arm from loosening.

2. A bracket according to claim 1, wherein the gear assembly comprises a transmission member and a rotating member, the transmission member is drivingly connected to the rotating member to drive the rotating member to rotate, the rotating member is disengaged from the movable clamping arm when the rotating member rotates to a first predetermined position, the movable clamping arm is movable relative to the fixed clamping arm, the rotating member is engaged with the movable clamping arm when the rotating member rotates to a second predetermined position, and the movable clamping arm is fixed relative to the fixed clamping arm.

3. The securely lockable stand according to claim 2, wherein the locking mechanism further comprises a locking switch rotatably coupled to the transmission member, the locking switch being rotatable between an open position and a closed position, the locking switch moving the transmission member in a longitudinal direction of the housing when rotated between the open position and the closed position to drive the rotation member to rotate.

4. The bracket capable of being locked stably according to claim 3, wherein the transmission member is provided with a transmission position, a transmission rack is arranged on the side wall of the transmission position, a gear is arranged on one side of the rotation member facing the transmission member, a pivot post is arranged in the housing, the rotation member is rotatably sleeved on the pivot post, the pivot post is located in the transmission position, and the gear extends into the transmission position and is in transmission connection with the transmission rack.

5. The bracket capable of being locked stably according to claim 4, wherein the housing has a matching cavity therein, the movable clamping arm includes two connecting arms spaced apart from each other, slots for movably engaging with the connecting arms are formed between two sides of the matching cavity and the side walls of the housing, the pivot post and the transmission member are located in the matching cavity, the circumferential wall of the rotating member has teeth, and the inner side wall of the connecting arm has a rack engaged with the teeth.

6. The stably lockable carriage as claimed in claim 5, wherein the circumferential wall of the rotary member includes a major arc portion and a minor arc portion, the tooth portion is convexly provided to the minor arc portion, the major arc portion is close to the rack and the tooth portion is separated from the rack when the rotary member is rotated to the first preset position, and the minor arc portion is close to the rack and the tooth portion is engaged with the rack when the rotary member is rotated to the second preset position.

7. A bracket capable of being locked stably according to claim 5, wherein a first resetting member is arranged between the housing and the connecting arm, the first resetting member is used for providing an elastic force for pulling the movable clamping arm back into the housing, a second resetting member is arranged between the housing and the transmission member, and the second resetting member is used for providing a pressure for fixing the transmission member relative to the housing.

8. The stably lockable bracket according to claim 5, wherein the housing is provided with a switch receiving groove, a through hole is formed at one end of the switch receiving groove, the locking switch is rotatably disposed in the switch receiving groove, the locking switch is provided with a rotating portion, and the transmission member is provided with a pivoting portion, the rotating portion extends into the housing from the through hole and is rotatably connected with the pivoting portion, so that when the locking switch rotates between the open position and the closed position, the transmission member is driven to move in a length direction of the housing.

9. The stably lockable bracket according to claim 8, wherein the rotating portion has a first stop surface and a second stop surface that are adjacent to each other, a vertical distance between a center of a rotating shaft of the rotating portion and the first stop surface is smaller than a vertical distance between the center of the rotating shaft of the rotating portion and the second stop surface, when the locking switch is located at the open position, the first stop surface abuts against an outer side surface of the end wall of the matching cavity, the bracket is in an unlocked state, and the movable clamping arm is movable relative to the fixed clamping arm; when the locking switch is located at the closing position, the second stop surface is abutted to the outer side surface of the end wall of the matching cavity, the support is in a locking state, and the movable clamping arm is fixed relative to the fixed clamping arm.

10. The stably lockable stand according to any one of claims 1 to 9, wherein the movable clamp arm has a first hook portion, the fixed clamp arm has a second hook portion, a clamping space is formed between the first hook portion and the second hook portion, and an extending direction of the first hook portion and an extending direction of the second hook portion form a predetermined angle.