CN111457199A - Electronic equipment - Google Patents

Abstract

The invention discloses an electronic device, comprising: a casing, the casing is provided with an opening; a motion module, when the motion module is in an extended position, at least part of the motion module is located in the casing outside; when the movement module is in the retracted position, the movement module is located in the casing, and the movement module has a first meshing tooth segment extending along its moving direction; the balance block, so The balance block is movably arranged in the housing, the balance block is consistent with the moving direction of the motion module, the balance block has a second meshing tooth segment extending along its moving direction, a gear, the gear The first meshing tooth segment and the second meshing tooth segment are respectively meshed with the gear. The above solution can solve the problem that the manual-controlled motion module in the current electronic device is prone to be ejected by mistake when the electronic device falls.

Description

Electronic equipment

technical field

The present invention relates to the technical field of communication devices, and in particular, to an electronic device.

Background technique

With the improvement of user demands, users have higher and higher requirements for the screen ratio of electronic devices. A larger screen ratio will not only improve the appearance performance of the electronic device, but also improve the display performance of the electronic device. In order to achieve the above-mentioned purpose, more and more electronic devices adopt a motion module that can be raised and lowered, such as a lift-type camera.

In the actual working process, the motion module needs the drive of the drive mechanism to realize the motion. The drive mechanism usually includes an electric motor. In order to reduce energy consumption, current electronic devices are usually equipped with a pop-up mechanism capable of lifting and lowering the motion module through manual manipulation. However, in the actual use process, when the electronic device falls to the ground, the motion module will continue to move towards the inside of the housing of the electronic device due to inertia, resulting in a phenomenon similar to the user's manual pressing, which eventually leads to the occurrence of the motion module. It pops up by mistake, obviously, it is not convenient for users to use.

SUMMARY OF THE INVENTION

The invention discloses an electronic device to solve the problem that a manually-controlled motion module in the current electronic device is prone to pop up by mistake when the electronic device falls off.

In order to solve the above problems, the present invention adopts the following technical solutions:

An electronic device comprising:

a casing, the casing is provided with an opening;

A movement module, when the movement module is in the extended position, at least part of the movement module is located outside the casing; when the movement module is in the retracted position, the movement module is located at the Inside the casing, the motion module has a first meshing tooth segment extending along its moving direction;

a balance block, the balance block is movably arranged in the casing, the balance block is consistent with the moving direction of the motion module, and the balance block has a second meshing tooth segment extending along the moving direction;

a gear, the gear is rotatably arranged in the casing, and is arranged between the balance block and the motion module, the first meshing tooth segment and the second meshing tooth segment are respectively connected with the The gears are meshed.

The technical scheme adopted in the present invention can achieve the following beneficial effects:

When the electronic device disclosed in the embodiment of the present invention falls and hits the ground, the motion module moves in the retracting direction under the action of inertia. Similarly, the balance block also retracts toward the motion module under the action of inertia. Moving in the reverse direction, since the balance block is meshed with the gear through the second meshing tooth segment, and the gear meshes with the first meshing tooth segment, the balance weight will drive the gear to rotate, so as to toggle the motion module through the gear, thereby avoiding When the electronic device is dropped, the motion module moves toward its retracting direction, which can ultimately avoid the problem of false triggering of the motion module of the electronic device.

Description of drawings

The accompanying drawings described herein are used to provide further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the attached image:

FIG. 1 and FIG. 2 are schematic diagrams of a partial structure of an electronic device disclosed in an embodiment of the present invention from different viewing angles;

3-5 are schematic structural diagrams of the motion module disclosed in the embodiment of the present invention under different viewing angles;

6 is an exploded schematic diagram of the limiting mechanism disclosed in the embodiment of the present invention;

7 is a schematic diagram of the assembly structure of the limiting mechanism disclosed in the embodiment of the present invention;

8-11 are schematic diagrams of the electronic device disclosed in the embodiment of the present invention during the expansion and contraction process of the motion module;

FIG. 12 is a schematic structural diagram of another guide rail disclosed in an embodiment of the present invention.

Description of reference numbers:

100-shell, 110-middle frame, 111-opening, 120-inner cavity, 130-positioning post, 140-screw,

200-motion module, 210-guide rail, 211-first limit segment, 212-extension segment, 213-second limit segment, 214-retraction segment, 215-retaining wall, 200a-first meshing tooth segment ,

300 - the first elastic driving member,

400-Limiting mechanism, 410-Limiting part, 420-Installing bracket, 430-Hook bracket, 431-Connecting arm, 440-Second elastic driving member, 450-First hinge shaft, 460-Second hinge shaft,

500-Balance block, 510-Balance body, 511-Limiting protrusion, 520-Rack, 500a-Second meshing tooth segment,

600-Guide strip, 700-Guide limit block, 800-Gear.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the corresponding drawings. Obviously, the described embodiments are only some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

The technical solutions disclosed by the various embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Referring to FIGS. 1-12 , an embodiment of the present invention discloses an electronic device. The disclosed electronic device includes a housing 100 , a motion module 200 , a balance block 500 and a gear 800 .

The housing 100 is a basic component of the electronic device, and the housing 100 can provide a mounting basis for other components of the electronic device. In the embodiment of the present invention, the motion module 200 , the balance weight 500 and the gear 800 are all mounted on the casing 100 . In the embodiment of the present invention, the casing 100 has an opening 111 , and the opening 111 communicates with the inner cavity 120 of the casing 100 , thereby facilitating the position switching of the motion module 200 through the opening 111 between the inner cavity 120 and the outside of the casing 100 . Under normal circumstances, the housing 100 has a middle frame 110 , and the opening 111 is usually opened on the middle frame 110 . Of course, the opening 111 may also be opened at other positions of the casing 100 , and the embodiment of the present invention does not limit the specific position of the opening 111 on the casing 100 .

The motion module 200 is disposed on the casing 100 . In the embodiment of the present invention, the motion module 200 needs to at least partially protrude out of the casing 100 to work. The motion module 200 is movable relative to the housing 100 , and the motion module 200 is movable between an extended position and a retracted position. When the motion module 200 is in the extended position, at least part of the motion module 200 is located outside the casing 100 ; when the motion module 200 is in the retracted position, the motion module 200 is located within the casing 100 . In the embodiment of the present invention, the motion module 200 has a first meshing tooth segment 200a extending along its moving direction.

In the embodiment of the present invention, the motion module 200 is a semi-automatic structure. The user can manually control the motion module 200 to extend from the casing 100 , or manually control the motion module 200 to retract into the casing 100 . . In the specific manipulation process, the user manually presses the motion module 200 once, the motion module 200 retracts into the casing 100, the user manually presses the motion module 200 once again, and the motion module 200 extends to the casing beyond 100. There may be various structures for realizing the movement of the motion module 200. For example, the motion module 200 may adopt a pop-up structure similar to a semi-automatic pen.

In the embodiment of the present invention, the motion module 200 may include at least one of a camera, a flash, a fingerprint recognition module, and a receiver, and the embodiment of the present invention does not limit the specific type of the motion module 200 .

The balance block 500 is movably disposed in the housing 100 , and the balance block 500 and the movement module 200 move in the same direction. The balance block 500 has a second meshing tooth segment 500 a extending along the movement direction.

The gear 800 is rotatably disposed inside the housing 100 , the gear 800 is disposed between the balance block 500 and the motion module 200 , the first meshing tooth segment 200 a and the second meshing tooth segment 500 a mesh with the gear 800 respectively. In a specific embodiment, the first meshing tooth segment 200a meshes with the first side of the gear 800 , and the second meshing tooth segment 500a meshes with the second side of the gear 800 . The first side is opposite to the second side. The gear 800 enables the movement module 200 and the balance block 500 to form a linkage structure, and the movement of the balance block 500 will drive the movement module 200 to move in the opposite direction through the gear 800 .

When the electronic device disclosed in the embodiment of the present invention falls and hits the ground, the motion module 200 moves in the retracting direction under the action of inertia. Similarly, the balance block 500 also moves toward the motion module 200 under the action of inertia. Since the balance weight 500 is meshed with the gear 800 through the second meshing tooth segment 500a, and the gear 800 is meshed with the first meshing tooth segment 200a, the balance weight 500 will drive the gear 800, thereby passing through the gear 800. The motion module 200 is toggled to relieve the motion module 200 from moving toward the retracting direction due to inertia, which can ultimately avoid the problem of false triggering of the motion module 200 of the electronic device.

Of course, in the actual use process, the user's pressing force is relatively large, which can ensure that the motion module 200 moves when it is pressed.

Please refer to FIG. 1 again, in an optional solution, the balance weight 500 may include a balance body 510 and a rack 520, the balance body 510 is fixed on the rack 520, the rack 520 is engaged with the gear 800, and the rack 520 includes the above-mentioned The second meshing tooth segment 500a is described. The structure of the balance weight 500 is relatively simple. Specifically, the balance body 510 can be slidably fitted with the housing 100 .

In the embodiment of the present invention, a guide bar 600 and a guide limit block 700 are fixed in the housing 100 , the guide bar 600 and the guide limit block 700 are spaced apart and form a guide space, and the balance block 500 is disposed in the guide space and can slide , so that the stability of the movement of the balance weight 500 can be improved. In a further solution, the balance body 510 includes a limit protrusion 511 , and in the direction in which the motion module 200 moves from the extended position to the retracted position, the limit protrusion 511 is engaged with the guide limit block 700 to limit the position, thereby Avoid excessive movement of the counterweight 500 .

As described above, there may be various structures for manually controlling the motion module 200 . Please refer to FIGS. 1 to 12 again. The electronic device disclosed in the embodiment of the present invention may include the guide rail 210 . In a specific embodiment, the motion module 200 may include a guide rail 210 . In another specific embodiment, the motion module 200 is fixedly connected to the guide rail 210 .

In the embodiment of the present invention, the guide rail 210 may include a first limiting segment 211 , an extending segment 212 , a second limiting segment 213 and a retracting segment 214 which are connected in sequence in a ring shape. The extension section 212 and the retraction section 214 both serve to connect the first limit section 211 and the second limit section 213. Specifically, the opposite ends of the first limit section 211 and the second limit section 213 pass through the extension. The outgoing segment 212 is connected, and the other ends of the first limiting segment 211 and the second limiting segment 213 are connected by the retracting segment 214 .

On the premise that the motion module 200 has the guide rail 210 with the above structure, the electronic device disclosed in the embodiment of the present invention may further include a first elastic driving member 300 and a limiting mechanism 400 .

The first elastic driving member 300 is disposed in the casing 100 , and the first elastic driving member 300 drives the motion module 200 to extend out of the casing 100 through the opening 111 , so as to be in the extended position. That is to say, the direction of the elastic force exerted by the first elastic driving member 300 is consistent with the extending direction of the motion module 200 . Specifically, the first elastic driving member 300 may be a helical telescopic spring or an elastic rubber member, and the embodiment of the present invention does not limit the specific type of the first elastic driving member 300 .

The limiting mechanism 400 includes a limiting portion 410 , the limiting portion 410 is rotatably disposed in the housing 100 , and the limiting portion 410 is slidably matched with the guide rail 210 , thereby being able to slide to the guide rail 210 during the movement of the motion module 200 . various parts. Specifically, the limiting portion 410 can be adapted to slide fit with the first limiting segment 211 , the extending segment 212 , the second limiting segment 213 and the retracting segment 214 by rotating, and the limiting portion 410 is compatible with the first limiting segment 211 , the extending segment 212 , the second limiting segment 213 and the retracting segment 214 The cooperation of the position section 211 and the cooperation of the limit portion 410 and the second limit section 213 can both maintain the motion module 200 in the set position, that is, the above-mentioned extended position and retracted position.

It should be noted that, in this document, the first limiting segment 211 , the extending segment 212 , the second limiting segment 213 and the retracting segment 214 are sequentially connected in a ring shape, which means that when the motion module 200 is continuously pressed by the user In this case, the limiting portion 410 can slide relative to the guide rail 210, can enter from the first limiting section 211 to the extending section 212, can enter the second limiting section 213 from the extending section 212, and can enter the second limiting section 213 from the second limiting section. 213 enters the retracting section 214 and can enter the first limiting section 211 from the retracting section 214, and circulates in sequence with pressing. The protruding section 212 and the retracting section 214 play a guiding role, so that the limiting portion 410 can switch and cooperate between the first limiting section 211 and the second limiting section 213 .

As described above, the motion module 200 can be moved to change the position between the extended position and the retracted position. In the extended position, at least partially outside the casing 100 , the limiting portion 410 cooperates with the first limiting segment 211 to restrict the movement of the motion module 200 toward the opening 111 . In cooperation, the motion module 200 can be maintained in the extended position. In the retracted position, the motion module 200 is located inside the casing 100 , and the limiting portion 410 cooperates with the second limiting segment 213 to limit the motion module 200 from moving toward the opening 111 . The force generated by the limiting portion 410 on the motion module 200 is opposite to the direction of the elastic force exerted by the first elastic driving member 300, so as to realize the maintenance of the motion module 200 at the corresponding position.

During use, after the motion module 200 is completed, the user can manually press the motion module 200 to overcome the elastic force of the first elastic driving member 300 , and the limiting portion 410 can be retracted from the first limiting segment 211 through The segment 214 slides to the position where it cooperates with the second limiting segment 213 , and at the same time, the motion module 200 is retracted into the housing 100 through the opening 111 . Under the cooperation of the second limiting section 213, the motion module 200 can be kept in the retracted position; when the motion module 200 needs to work, the user can manually press the motion module 200 again to overcome the first elastic driving member 300. the elastic force, the limiting portion 410 can slide from the second limiting section 213 through the extending section 212 to the position where it cooperates with the first limiting section 211, and at the same time, the motion module 200 will protrude to the position through the opening 111. Outside the casing 100 , the motion module 200 can be kept in the extended position under the elastic force of the first elastic driving member 300 and the action of the first limiting section 211 , so that the motion module 200 can work.

It can be seen from the above working process that in the electronic device disclosed in the embodiment of the present invention, the motion module 200 is switched between the extended position and the retracted position by the first elastic driving member 300 and the limiting mechanism 400, regardless of whether the motion module is manipulated. The group 200 extends out of the casing 100 or is retracted into the casing 100 through the motion module 200. The user only needs to press the motion module 200. There is no problem of power consumption during the whole operation, so the electronic energy consumption of the device.

As described above, the limiting portion 410 can play a role of maintaining the position of the motion module 200 , and the structure of the limiting portion 410 can be various. Specifically, the limiting portion 410 may be a retracting hook, and the retracting hook is separately attached to the first limiting segment 211 and the second limiting segment 213 , thereby realizing the separation from the first limiting segment 211 and the second limiting segment 213 . Limit fit. The first limiting segment 211 and the second limiting segment 213 can be engaged with the draw hook. For example, the first limiting segment 211 and the second limiting segment 213 can be hooking recesses.

On the premise that the limiting portion 410 is a hook, the limiting mechanism 400 disclosed in the embodiment of the present invention may further include an installation bracket 420 and a hook bracket 430 . The installation bracket 420 is installed in the housing 100 . Specifically, the installation bracket 420 can be fixed In the housing 100 , the hook is connected to the hook bracket 430 , and the hook bracket 430 is rotatably connected to the installation bracket 420 , so that the hook bracket 430 drives the hook to rotate relative to the installation bracket 420 , so as to better adapt to the guide rail 210 .

Specifically, the hook bracket 430 can be hinged to the installation bracket 420 through the second hinge shaft 460 . The mounting bracket 420 may be fixed in the inner cavity 120 of the housing 100 by screws. Specifically, the second hinge shaft 460 may be a second screw. Specifically, the second screw may be fixed on the housing 100, and the hook bracket 430 may be rotatably connected to the second screw.

During the movement of the motion module 200, the limiting portion 410 may be separated from the guide rail 210. In order to achieve a more stable sliding fit, in a preferred solution, the limiting mechanism 400 may further include a second elastic driving member 440, a pull hook The hook bracket 430 can be hinged, the second elastic driving member 440 is connected with the hook, and the second elastic driving member 440 drives the hook to abut against the guide rail 210, thereby improving the stability of sliding fit.

Specifically, the hook can be hinged with the hook bracket 430 through the first hinge shaft 450, and the second elastic driving member 440 can be various types of elastic bodies. The second elastic driving member 440 can be a second torsion spring, the second torsion spring can pass through the first hinge shaft 450, one end of the second torsion spring is positioned on the hook bracket 430, and the other end of the second torsion spring is connected to the hook connected, and the driving hook is against the guide rail 210 . In this case, when the second elastic driving member 440 is a second torsion spring, a more compact assembly can undoubtedly be achieved. Specifically, the first hinge shaft 450 may be a first screw. Specifically, the threaded section of the first screw can be fixed on the hook bracket 430 , and the polished rod section of the first screw can be hingedly connected to the hook, as shown in FIG. 1 .

In a more preferred solution, the draw hook bracket 430 may include two connecting arms 431 arranged side by side, the draw hook may be arranged between the two connecting arms 431, and the first hinge shaft 450 may pass through the draw hook and the two connecting arms 431, In this case, the hook bracket 430 is connected between the two connecting arms 431 , which can undoubtedly improve the connection stability of the hook bracket 430 .

In the embodiment of the present invention, the pull hook can be located at least partially in the space covered by the mounting bracket 420, and the pull hook can be limitedly matched with the mounting bracket 420. Under the action of the mounting bracket 420, separation between the pull hook and the guide rail 210 can be further avoided.

1-12 again, in a preferred solution, the first elastic driving member 300 may be a first torsion spring, the first elastic end of the first torsion spring may be positioned on the housing 100, and the first elastic end of the first torsion spring The second elastic end can be positioned on the motion module 200 . Normally, the second elastic end of the first torsion spring is in contact with the motion module 200 to drive the motion module 200 . Due to the special structure of the torsion spring, the first elastic end of the first torsion spring and the second elastic end of the first torsion spring can be designed to be longer structures, so that it is easier to realize the first elastic end of the first torsion spring and the housing. The elastic cooperation between 100 and between the second elastic end of the first torsion spring and the motion module 200 is also beneficial to the more free arrangement of the first torsion spring in the inner cavity 120 .

In the actual assembly process, the first elastic end of the first torsion spring and the second elastic end of the first torsion spring may be in contact with the housing 100 and the motion module 200 respectively. Of course, in order to improve assembly performance, in a more preferred solution, a positioning column 130 may be provided in the housing 100 , and the first torsion spring may be sleeved on the positioning column 130 .

In order to avoid the falling off of the first torsion spring, one end of the positioning column 130 may be fixed on the housing 100, and the other end of the positioning column 130 may be provided with a threaded hole. The first torsion spring is sleeved on the positioning column 130 from the other end of the positioning column 130. The first torsion spring can be installed on the positioning column 130 through a screw 140 threaded with the threaded hole. The action of a torsion spring prevents the first torsion spring from falling off the positioning post 130 .

As mentioned above, the second elastic end of the first torsion spring can be in contact with the motion module 200. In order to make it easier to apply the elastic force, the motion module 200 can have a retaining wall 215, and the second elastic end of the first torsion spring is connected to the retaining wall. 215 elastically contacts, so as to apply a driving force to the motion module 200 through the blocking wall 215 .

As described above, the limiting portion 410 may be a hook, and the force exerted by the hook on the motion module 200 is a pulling force. Of course, the limiting portion 410 may also be an abutting portion capable of abutting with the first limiting segment 211 and the second limiting segment 213. In this case, the force exerted by the abutting portion on the motion module 200 may be is the thrust force, and similarly, the first limiting segment 211 and the second limiting segment 213 may be recessed, so as to facilitate limited contact with the abutting portion. Of course, the first limiting segment 211 and the second limiting segment 213 can also be of other structures, as long as they can be limitedly matched with the abutting portion, so as to keep the motion module 200 in the extended position or under the restriction of the abutting portion. retracted position. In a specific implementation manner, the abutting portion may be a structural member whose one end is rotatably connected to the housing 100 and the other end is slidably fitted with the guide rail 210 .

In the electronic device disclosed in the embodiment of the present invention, the structure of the guide rail 210 can be various. Both the second limiting segment 213 and the retracting segment 214 may be respective groove segments of the guide groove, that is, the first limiting segment 211 communicates with the extending segment 212, the extending segment 212 communicates with the second limiting segment 213, and the second limiting segment 212 communicates with the second limiting segment 213. The limiting segment 213 communicates with the retracting segment 214 , and the retracting segment 214 communicates with the first limiting segment 211 . In this case, the limiting portion 410 can slide in the guide groove, which can undoubtedly improve the stability of the sliding fit, and of course, is more conducive to keeping the motion module 200 in the extended position or the retracted position.

Specifically, the first limiting segment 211 , the extending segment 212 , the second limiting segment 213 and the retracting segment 214 may adopt groove segments of various structures. Please refer to FIGS. 4 to 6 again. The extending segment 212 may be The straight groove segment can further realize the extension of the motion module 200 more quickly. In a more preferred solution, the retracted section 214 may comprise an arcuate slot section. During the retraction process of the motion module 200, the user needs to press for a longer time, and since the arc-shaped groove segment has a certain curvature, the limiting portion 410 can be better guided to cooperate with the first limiting segment 211 s position.

In order to better realize the limit fit, the first limit segment 211 may be a groove segment bent toward the extending direction away from the motion module 200, for example, the through axis of the first limit segment 211 is a V-shaped broken line; , the second limit section 213 can also be a groove section bent toward the direction away from the protruding direction of the motion module 200 , for example, the through axis of the second limit section 213 is a V-shaped broken line; in this case, the first limit The segment 211 and the second limiting segment 213 can undoubtedly achieve a more stable limiting fit with the limiting portion 410 .

Of course, the guide rail 210 can also have other structures, and is not limited to the groove-like structure. Referring to FIG. 12 , in a specific embodiment, the guide rail 210 may have a protruding guide portion, and the first limiting segment 211 , the extending segment 212 , the second limiting segment 213 and the retracting segment 214 are all protruding segments. The sliding formation of the limiting portion 410 may be as shown in FIG. 12 , and the sliding direction of the limiting portion 410 relative to the guide rail 210 is schematically shown by the dotted arrow in FIG. 12 .

Similarly, the first limiting segment 211 may be a bar-shaped protrusion that is bent toward the moving direction away from the motion module 200 ; the second limiting segment 213 may be a bar-shaped protrusion that is bent toward the moving direction away from the motion module 200 . Raised.

In this embodiment of the present invention, the motion module 200 may include at least one of a camera, a flash, a fingerprint recognition module, and a receiver. Of course, the motion module 200 may also be of other types, and the embodiment of the present invention does not limit the motion module 200 specific species.

The electronic devices disclosed in the embodiments of the present invention may be devices such as smart phones, tablet computers, e-book readers, wearable devices, etc. The embodiments of the present invention do not limit the specific types of electronic devices.

The above embodiments of the present invention mainly describe the differences between the various embodiments. As long as the different optimization features of the various embodiments are not contradictory, they can be combined to form better embodiments. No longer.

The embodiments of the present invention have been described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific embodiments, which are merely illustrative rather than restrictive. Under the inspiration of the present invention, without departing from the spirit of the present invention and the scope protected by the claims, many forms can be made, which all belong to the protection of the present invention.

Claims (10)

1. an electronic device, is characterized in that, comprises: a casing, the casing is provided with an opening; A movement module, when the movement module is in the extended position, at least part of the movement module is located outside the casing; when the movement module is in the retracted position, the movement module is located at the Inside the casing, the motion module has a first meshing tooth segment extending along its moving direction; a balance block, the balance block is movably arranged in the casing, the balance block is consistent with the moving direction of the motion module, and the balance block has a second meshing tooth segment extending along the moving direction; a gear, the gear is rotatably arranged in the casing, and is arranged between the balance block and the motion module, the first meshing tooth segment and the second meshing tooth segment are respectively connected with the The gears are meshed. 2 . The electronic device according to claim 1 , wherein the balance weight comprises a balance body and a rack, the balance body is fixed on the rack, and the rack is engaged with the gear, so 2 . The rack includes the second meshing tooth segment. 3 . The electronic device according to claim 2 , wherein a guide bar and a guide limit block are fixed in the casing, the guide bar and the guide limit block are arranged at intervals and form a guide space, so The balance weight is arranged in the guide space and is slidable. 4 . The electronic device according to claim 3 , wherein the balance body comprises a limit protrusion, and in the direction in which the motion module moves from the extended position to the retracted position, the The limiting protrusions are limitedly matched with the guide limiting blocks. 5 . The electronic device according to claim 1 , wherein the electronic device comprises a guide rail, and the guide rail comprises a first limiting segment, a protruding segment, a second limiting segment and a retracting segment connected in sequence in a ring shape. 6 . part; The electronic device also includes: a first elastic driving member, the first elastic driving member is disposed in the casing, and the first elastic driving member drives the motion module to protrude out of the casing through the opening; A limit mechanism, the limit mechanism includes a limit portion, the limit portion is rotatably arranged in the housing, and the limit portion is slidably matched with the guide rail; wherein: In the extended position, at least part of the motion module is located outside the casing, and the limiting portion cooperates with the first limiting segment to limit the motion module from moving toward the opening; In the retracted position, the motion module is located in the casing, and the limiting portion cooperates with the second limiting section to limit the motion module from moving toward the opening. 6 . The electronic device according to claim 5 , wherein the limiting portion is a pull hook, the limiting mechanism further comprises an installation bracket and a pull hook bracket, the installation bracket is installed in the housing, the The draw hook is connected with the draw hook bracket, the draw hook support is rotatably connected with the installation bracket, and the draw hook is hooked and matched with the first limit section or the second limit section. 7 . The electronic device according to claim 6 , wherein the limiting mechanism further comprises a second elastic driving member, the retracting hook is hinged with the retracting hook bracket, and the second elastic driving member is connected to the retracting hook. 8 . connected, the second elastic driving member drives the hook to abut against the guide rail. 8 . The electronic device according to claim 5 , wherein the first elastic driving member is a first torsion spring, the first elastic end of the first torsion spring is positioned on the housing, and the The second elastic end of the first torsion spring is positioned on the motion module. 9 . The electronic device according to claim 8 , wherein the motion module has a retaining wall, and the second elastic end of the first torsion spring is in elastic contact with the retaining wall. 10 . 10 . The electronic device according to claim 5 , wherein the guide rail is a guide groove, the first limiting segment, the extending segment, the second limiting segment and the retracting segment. 11 . Both are groove segments of the guide groove.

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