CN210488382U

CN210488382U - Computer integrated machine

Info

Publication number: CN210488382U
Application number: CN201921813414.0U
Authority: CN
Inventors: 张启文
Original assignee: Shenzhen Hailan Electronics Co ltd
Current assignee: Shenzhen Hailan Electronics Co ltd
Priority date: 2019-10-23
Filing date: 2019-10-23
Publication date: 2020-05-08
Anticipated expiration: 2029-10-23

Abstract

The utility model discloses an all-in-one computer, include: a middle frame; the display screen is embedded at one side of the middle frame; the main board is fixedly arranged on the other side of the middle frame, which is far away from the display screen; the hard disk is arranged on one side of the middle frame, which is provided with the mainboard, and is matched with the mainboard for installation; the hard disk integrated machine comprises a middle frame, a hard disk, a first mounting groove, a second mounting groove, a partition plate, at least two elastic pieces, a limiting post and a limiting hole, wherein the middle frame is provided with the first mounting groove and the second mounting groove, the mainboard is mounted in the first mounting groove, the hard disk is mounted in the second mounting groove, the partition plate is arranged between the first mounting groove and the second mounting groove, the partition plate is provided with the at least two elastic pieces, the limiting post is arranged on the elastic pieces, one side of the hard disk is provided with the limiting hole matched with the limiting post, the hard disk is mounted and dismounted more conveniently by.

Description

Computer integrated machine

Technical Field

The utility model relates to a computer technology field, more specifically the utility model relates to a computer all-in-one machine that says so.

Background

The computer all-in-one machine is a novel market product between a desktop computer and a notebook computer at present, integrates a host machine part and a display part into a new computer, and is innovative in high integration of internal elements; the integrated machine is a desktop computer integrating a microprocessor, a mainboard, a hard disk, a screen, a loudspeaker and a display into a whole.

With the development of science and technology, all-in-one computers have been widely used in people's daily life, and in the prior art, the hard disk, the mainboard, the heat abstractor and other arrangement structures of all-in-one computers are complicated, and when the all-in-one computers are disassembled or installed, other parts are easy to be touched and damaged.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a computer all-in-one machine of convenient dismantlement or installation is provided.

The purpose of the utility model is realized through the following technical scheme:

an all-in-one computer, comprising:

a middle frame;

the display screen is embedded at one side of the middle frame;

the main board is fixedly arranged on the other side of the middle frame, which is far away from the display screen;

the hard disk is arranged on one side of the middle frame, which is provided with the mainboard, and is matched with the mainboard for installation;

the hard disk drive comprises a middle frame, a hard disk, a first mounting groove, a second mounting groove, a partition plate, at least two elastic pieces, a limiting column and a limiting hole, wherein the middle frame is provided with the first mounting groove and the second mounting groove, the mainboard is mounted in the first mounting groove, the hard disk is mounted in the second mounting groove, the partition plate is arranged between the first mounting groove and the second mounting groove, the partition plate is provided with the at least two elastic pieces, the elastic pieces are provided with the limiting column, and the limiting.

Optionally, the other side of mainboard is equipped with heat abstractor, heat abstractor includes wind channel subassembly and heat-conducting component, heat-conducting component one end is connected the mainboard, the other end is connected the wind channel subassembly, be equipped with the intercommunication on the center the air exit and the air intake of wind channel subassembly, the air intake with the inboard of air exit is equipped with the dust blanket.

Optionally, the first mounting groove extends to the bottom end of the middle frame, the air inlet is formed in the position, abutted against the bottom edge of the middle frame, of the side edge of the first mounting groove, the air outlet is formed in the position, abutted against the bottom edge of the middle frame, of the air duct assembly, and a first channel is arranged between the air outlet and the air duct assembly and provided with a heat insulation sheet.

Optionally, a shooting device is arranged on the middle frame and electrically connected with the main board, the shooting device comprises a camera module and a telescopic module, and the telescopic module controls the camera module to extend out of or retract into the middle frame.

Optionally, the telescopic module comprises a first spring, a self-locking switch and a first fixing part used for fixing the camera module, a buckle protrusion matched with the self-locking switch is arranged on the first fixing part, first limiting protrusions are arranged on two sides of the first fixing part, one end of the first spring is fixed to the first limiting protrusions, and the other end of the first spring is fixed to the middle frame.

Optionally, the telescopic module comprises a reduction gear set, one side of the first fixing part, which is close to the self-locking switch, is provided with a plurality of first racks matched with the reduction gear set, and the first racks are arranged in parallel along the telescopic direction of the camera module.

Optionally, the camera module includes a first circuit board and a camera installed on the first circuit board, a first groove is formed in the first fixing piece, a heat dissipation hole and a first supporting protrusion used for placing the first circuit board are formed in the bottom of the first groove, a first inclined plane is formed in the first supporting protrusion, and the inclination angle range of the first inclined plane is 10-80 degrees.

Optionally, a third mounting groove is formed in the middle frame, the air inlet is formed in the side wall of the third mounting groove, two speakers electrically connected with the main board are arranged in the third mounting groove, the two speakers are located below the display screen, and the sound outlet hole is formed in the bottom of the first mounting groove.

Optionally, the all-in-one computer further includes a rear cover, the rear cover is provided with a plurality of clamping blocks arranged at intervals, a clamping groove is formed in each clamping block, the middle frame corresponds to the rear cover and is provided with a plurality of clamping holes matched with the clamping grooves, clamping portions are radially arranged on the side walls of the clamping holes, and the clamping portions are inserted into the clamping grooves to be matched with the clamping grooves.

Optionally, the all-in-one computer further comprises a support, the support comprises a supporting rod and a base, a first rotating part is arranged at one end of the supporting rod, the first rotating part is fixedly connected with the rear cover, and the other end of the supporting rod is movably connected with the base through a second rotating part.

The hard disk is more convenient to install and disassemble by arranging the elastic sheet and the limiting column on the partition plate, when the hard disk is only required to be replaced, the hard disk can be easily taken down by separating the limiting hole from the limiting column through pressing the elastic sheet without disassembling the mainboard, and the hard disk is disassembled from the first mounting groove, so that the stability of the all-in-one computer is effectively ensured; and first mounting groove and second mounting groove set up along the horizontal direction of center to be equipped with the baffle between and keep apart, first mounting groove is further spacing to the mainboard, and the second mounting groove is further spacing to the hard disk, makes mainboard and hard disk install in the center closely steadily, thereby guarantees that the all-in-one computer can stabilize the efficient and carry out work.

Drawings

FIG. 1 is a schematic structural diagram of an all-in-one computer according to an embodiment of the present invention;

fig. 2 is a schematic diagram of the rear view explosion structure of the all-in-one computer according to the embodiment of the present invention;

fig. 3 is a schematic diagram of the front view explosion structure of the all-in-one computer according to the embodiment of the present invention;

fig. 4 is an explosion structure diagram of the shooting device according to the embodiment of the present invention.

Wherein: 10. a computer integrated machine, 11, a middle frame, 111, an air outlet, 112, an air inlet, 113, a dustproof layer, 114, a clamping hole, 115, a clamping part, 116, a first mounting groove, 117, a second mounting groove, 12, a display screen, 13, a mainboard, 15, a loudspeaker, 16, a heat insulation sheet, 17, a third mounting groove, 171, a sound outlet, 18, a rear cover, 181, a clamping block, 182, a clamping groove, 19, a partition board, 191, an elastic sheet, 192, a limiting column, 20, a heat dissipation device, 21, an air duct component, 22, a heat conduction component, 30, a shooting device, 31, a shooting module, 311, a first circuit board, 312, a camera, 32, a telescopic module, 33, a first fixing piece, 331, a clamping bulge, 332, a first limiting bulge, 333, a first rack, 334, a first groove, 335, a heat dissipation hole, 336, a first supporting bulge, 337, a first inclined plane, 34, a first spring, 35 and a self-locking switch, 36. reduction gear set, 40, support, 41, branch, 42, base, 43, first rotating part, 44, second rotating part, 50, hard disk, 51, spacing hole.

Detailed Description

In the description of the present invention, it is to be understood that the terms "center", "lateral", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

In the description of the present invention, "a plurality" means two or more unless otherwise specified. Furthermore, the term "comprises" and any variations thereof is intended to cover non-exclusive inclusions. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The present invention will be further described with reference to the accompanying drawings and preferred embodiments.

As shown in fig. 1 to 4, the present embodiment discloses a personal computer integrated machine, including:

a middle frame 11;

the display screen 12 is embedded at one side of the middle frame 11;

the main board 13 is fixedly arranged on the other side, away from the display screen 12, of the middle frame 11;

the hard disk 50 is arranged on one side of the middle frame 11, which is provided with the mainboard 13, and is matched with the mainboard 13 for installation;

the middle frame 11 is provided with a first mounting groove 116 and a second mounting groove 117, the main board 13 is mounted in the first mounting groove 116, the hard disk 50 is mounted in the second mounting groove 117, a partition plate 19 is arranged between the first mounting groove 116 and the second mounting groove 117, at least two elastic pieces 191 are arranged on the partition plate 19, limiting columns 192 are arranged on the elastic pieces 191, and limiting holes 51 matched with the limiting columns 192 are arranged on one side of the hard disk 50.

The elastic sheet 191 and the limiting column 192 are arranged on the partition plate 19, so that the hard disk 50 can be more conveniently mounted and dismounted, when the hard disk 50 is only required to be replaced, the hard disk 50 can be easily taken down by pressing the elastic sheet 191 to enable the limiting hole 51 to be separated from the limiting column 192, the main board 13 does not need to be dismounted, the hard disk 50 is dismounted from the first mounting groove 116, and the stability of the all-in-one computer 10 is effectively ensured; the first mounting groove 116 and the second mounting groove 117 are arranged along the horizontal direction of the middle frame 11, and are isolated by a partition plate 19, the first mounting groove 116 further limits the main board 13, and the second mounting groove 117 further limits the hard disk 50, so that the main board 13 and the hard disk 50 are tightly and stably mounted on the middle frame 11, and the all-in-one computer 10 can stably and efficiently work; meanwhile, the bottom of the second mounting groove 117 is provided with a strip-shaped heat dissipation hole, so that the hard disk 50 can be helped to dissipate heat, and the hard disk 50 can be better guaranteed to work stably and efficiently.

Wherein, the heat dissipating device 20 includes an air duct assembly 21 and a heat conducting assembly 22, one end of the heat conducting assembly 22 is connected to the main board 13, the other end is connected to the air duct assembly 21, the middle frame 11 is provided with an air outlet 111 and an air inlet 112 which are communicated with the air duct assembly 21, in the operation process of the all-in-one computer 10, the heat conducting assembly 22 rapidly transfers the heat generated by the main board 13 as the main heat source of the all-in-one computer 10 to the radiator in the air duct assembly 21, and the heat transferred to the radiator is rapidly exhausted from the air outlet 111 on the middle frame 11 under the driving of the fan in the air duct assembly 21, thereby the utility model discloses the heat dissipating performance of the all-; the inner sides of the air inlet 112 and the air outlet 111 are both provided with a dustproof layer 113, and the dustproof layer 113 is provided with mesh holes for exhausting, so that impurities can be isolated, and meanwhile, the efficient exhaust performance is ensured, and the heat dissipation effect of the heat dissipation device 20 is better ensured; the optional fan comprises a centrifugal fan.

The heat conductive member 22 includes a heat conductive plate which is in contact with the CPU on the main board 13, and at least two heat conductive pipes each having one end connected to the heat conductive plate and the other end connected to the radiator. The heat conduction pipe is the heat conduction copper pipe of flat setting to the interval is provided with three, and each heat conduction pipe is the bending shape in order to carry out reasonable arrangement, and heat conduction pipe and heat-conducting plate can adopt the welding mode to be connected, and heat conduction pipe and heat-conducting plate also can be a body structure. Wherein, the heat-conducting plate also can be the copper product, and this embodiment heat-conducting plate is fixed and is laminated in CPU through two clamp plates, and the clamp plate both ends are provided with the screw with 11 fixed connection of center. The heat-conducting plate with larger heat-conducting area absorbs the heat generated by the CUP of the main board 13 and transfers the heat to the radiator through the heat-conducting pipe, and the heat exchange efficiency in the whole process is higher.

The first mounting groove 116 extends to the bottom end of the middle frame 11, and the air inlet 112 is formed at the abutting position of the side edge of the first mounting groove 116 and the bottom edge of the middle frame 11, so that dust and the like can be effectively prevented from being sucked into the heat dissipation assembly, and a better heat dissipation effect is ensured; a first channel is arranged between the air outlet 111 and the air duct assembly 21, and the first channel is provided with a heat insulation sheet 16, so that heat can be effectively prevented from being transferred to one side of the display screen 12, and the display screen 12 is ensured to be at the optimal working temperature.

Wherein, be equipped with in the center 11 and shoot device 30, shoot device 30 and mainboard 1313 electric connection, shoot device 30 and include camera module 31 and flexible module 32, and flexible module 32 controls camera module 31 and stretches out or retract center 11.

The camera module 31 can be effectively protected through the matching arrangement of the camera module 31 and the telescopic module 32, so that the camera module 31 can be more durable, and the telescopic module 32 can be more convenient for a user to operate and control the camera module 31 to extend out of or retract into the middle frame 11; when a user needs to use the camera shooting or photographing function, the telescopic module 32 is operated to enable the camera shooting module 31 to extend out of the middle frame 11 for use, and the camera shooting module 31 can retract into the middle frame 11 when not being used, so that the privacy and the safety of the user are further protected.

The telescopic module 32 comprises a first spring 34, a self-locking switch 35 and a first fixing piece 33 used for fixing the camera module 31, a buckle protrusion 331 matched with the self-locking switch 35 is arranged on the first fixing piece 33, when the telescopic module is used, the first fixing piece 33 is pressed to enable the buckle protrusion 331 to be matched and clamped with the self-locking switch 35, so that the camera module 31 is hidden in the middle frame 11, the self-locking buckle is unlocked by pressing again, the camera module 31 is popped out, the camera module can be conveniently shot by a user, and the privacy safety of the user is effectively guaranteed; first mounting 33 both sides are equipped with first spacing arch 332, the one end of first spring 34 is fixed on first spacing arch 332, the other end of first spring 34 is fixed on center 11, first spring 34 is including drawing the spring that rises, buckle is protruding 331 and when the cooperation chucking of self-locking switch 35, it is in under the state that draws the spring to rise, press once more and make after the unblock of auto-lock joint, first mounting 33 is effectual popping out under first spring 34's effect, guarantee that camera module 31 can be quick stretch out outside center 11, thereby the person of facilitating the use shoots flexible activity.

The telescopic module 32 comprises a reduction gear set 36, one side of the first fixing member 33 close to the self-locking switch 35 is provided with a plurality of first racks 333 matched with the reduction gear set 36, the first racks 333 are arranged in parallel along the telescopic direction of the camera module 31, the matching arrangement of the reduction gear set 36 and the first racks 333 can reduce the extending or retracting speed of the first fixing member 33, and the collision vibration between the first fixing member 33 and a limiting member on the middle frame 11 after the first fixing member 33 is ejected too fast is avoided, so that the camera module 31 is effectively protected; in addition, the cooperation between the reduction gear set 36 and the first rack 333 provides a better tactile sensation when pressing the image pickup device, thereby effectively improving the user experience of operating the image pickup device.

Wherein, the camera module 31 includes a first circuit board 311 and a camera 312 installed on the first circuit board 311, a first groove 334 is provided on the first fixing member 33, a heat dissipation hole 335 is provided at the bottom of the first groove 334 and a first supporting protrusion 336 for placing the first circuit board 311, a first inclined plane 337 is provided on the first supporting protrusion 336, the inclination angle range of the first inclined plane 337 is 10 to 80 degrees, the inclination angle of the first inclined plane 337 changes the shooting angle of the camera 312, the shooting angle of the camera 312 deviates to one side of the display screen 12, which is more beneficial for shooting a user of the all-in-one computer 10, because the shooting center position of the camera 312 can be better aligned with the user, the shooting effect of the camera 312 is better, and the first supporting protrusion 336 not only can effectively support the first circuit board 311, but also can further enhance the rigidity of the first fixing member 33, the camera 312 can be better protected; moreover, the inclination angle of the first inclined plane 337 controlling the shooting angle of the camera 312 can be adjusted practically according to the display screens 12 of different sizes, so as to better meet the shooting requirements of users, and in this embodiment, the inclination angle of the first inclined plane 337 is optionally 30 degrees or 45 degrees; simultaneously the setting of louvre 335 can effectual help first circuit board 311 dispel the heat for camera 312 can keep suitable operating temperature, thereby better improvement camera 312's the shooting effect.

In an optional embodiment, an optical disc drive device electrically connected to the main board 13 is disposed in the middle frame 11, and the optical disc drive device is convenient for a user to read or write optical discs such as CDs and DVDs, and better meets the requirements of different users; the middle frame 11 is a plastic piece, and the optical drive devices are arranged on two sides of the middle frame 11 through integral injection molding, so that the space of the middle frame 11 is reasonably utilized, and the mutual interference between the optical drive devices and the shooting device is effectively avoided; this embodiment is optional, and the side of center 11 is equipped with mainboard 13 electric connection's Type-C interface, and Type-C interface is convenient to charge or data transmission uses the mobile device, and the occupation to the USB interface on the all-in-one computer 10 when can also effectual reduction mobile device charges.

The middle frame 11 is provided with a third mounting groove 17, the air inlet 112 is arranged on the side wall of the third mounting groove 17, the third mounting groove 17 is internally provided with two speakers 15 electrically connected with the main board 13, the two speakers 15 are both positioned below the display screen 12, the bottom sound outlet hole 171 of the first mounting groove 116 is provided, and the sound of the speakers 15 is directly transmitted out through the bottom sound outlet hole 171 of the first mounting groove 116, so that the sound of the speakers 15 can be directly transmitted to a user, and the sound effect of the speakers 15 can be better ensured; and the air inlet 112 can effectively take away the heat generated by the speaker 15 when air enters, so that the speaker 15 can operate at the optimal operating temperature.

Wherein, the all-in-one computer 10 further comprises a rear cover 18, the rear cover 18 is provided with a plurality of clamping blocks 181 arranged at intervals, the clamping blocks 181 are provided with clamping grooves 182, the middle frame 11 is provided with a plurality of clamping holes 114 corresponding to the rear cover 18 and matched with the clamping grooves 182, the side walls of the clamping holes 114 are radially provided with clamping parts 115, the clamping parts 115 are inserted into the clamping grooves 182 for matching, the free ends of the clamping parts 115 are arranged in an inclined plane, which is beneficial for the clamping parts 115 to extend into the clamping grooves 182, thereby realizing accurate installation and fixation, and the rear cover 18 is convenient to install and disassemble, in the process of mounting the rear cover 18 on the middle frame 11, each locking block 181 of the rear cover 18 firstly extends into the locking hole 114, the limiting post 192 is inserted into the limiting groove, so that the locking portion 115 corresponds to the locking groove 182, the rear cover 18 is slid forward, the engagement portion 115 is engaged with the engagement groove 182, and the engagement portion 115 is engaged with the engagement groove 182, whereby the rear cover 18 is engaged with the center frame 11.

The all-in-one computer 10 further comprises a support 40, the support 40 comprises a support rod 41 and a base 42, a first rotating portion 43 is arranged at one end of the support rod 41, the first rotating portion 43 is fixedly connected with the rear cover 18, the other end of the support rod 41 is movably connected with the base 42 through a second rotating portion 44, and the best use angle of the display screen 12 can be conveniently adjusted through the arrangement of the first rotating portion 43 and the second rotating portion 44, so that different use scenes can be better used. In an optional embodiment, a wireless charging module is arranged in the casing of the base 42, a first charging position is arranged on the outer surface of the base 42, the first charging position is used for placing charging equipment, and the mobile equipment is more conveniently charged through the wireless charging module, so that the all-in-one computer 10 is more convenient to use, and the occupation of a USB interface on the all-in-one computer 10 during charging of the mobile equipment can be effectively reduced; be equipped with the decorative layer on the first position of charging, be equipped with on the base 42 with wireless charging module electric connection's Type-C interface, the decorative layer adopts the non-slip material preparation, can effectually prevent rocking of the mobile device in charging process to better assurance mobile device's charge efficiency, Type-C interface on the base 42 can be connected with Type-C interface on the center 11, provide the electric energy for wireless charging module, also can provide the electric energy for wireless charging module through the head that charges of external adaptation.

The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims

1. An all-in-one computer, comprising:

a middle frame;

the display screen is embedded at one side of the middle frame;

2. The all-in-one computer as claimed in claim 1, wherein a heat dissipation device is disposed on the other side of the main board, the heat dissipation device comprises an air duct assembly and a heat conduction assembly, one end of the heat conduction assembly is connected to the main board, the other end of the heat conduction assembly is connected to the air duct assembly, an air outlet and an air inlet which are communicated with the air duct assembly are disposed on the middle frame, and a dust-proof layer is disposed on the inner sides of the air inlet and the air outlet.

3. The all-in-one computer, as recited in claim 2, characterized in that the first mounting groove extends to the bottom end of the middle frame, the air inlet is arranged at the abutting position of the side edge of the first mounting groove and the bottom edge of the middle frame, a first channel is arranged between the air outlet and the air duct assembly, and a heat insulation sheet is arranged on the first channel.

4. The all-in-one computer as claimed in claim 1 or 2, wherein a shooting device is arranged on the middle frame and electrically connected with the main board, the shooting device comprises a camera module and a telescopic module, and the telescopic module controls the camera module to extend out of or retract into the middle frame.

5. The all-in-one computer as claimed in claim 4, wherein the telescopic module comprises a first spring, a self-locking switch and a first fixing piece for fixing the camera module, a buckle protrusion matched with the self-locking switch is arranged on the first fixing piece, first limiting protrusions are arranged on two sides of the first fixing piece, one end of the first spring is fixed on the first limiting protrusion, and the other end of the first spring is fixed on the middle frame.

6. The all-in-one computer as claimed in claim 5, wherein the telescopic module comprises a reduction gear set, a plurality of first racks matched with the reduction gear set are arranged on one side, close to the self-locking switch, of the first fixing member, and the first racks are arranged in parallel along the telescopic direction of the camera module.

7. The all-in-one computer as claimed in claim 5, wherein the camera module comprises a first circuit board and a camera mounted on the first circuit board, a first groove is formed in the first fixing member, a heat dissipation hole and a first supporting protrusion for placing the first circuit board are formed in the bottom of the first groove, a first inclined surface is formed in the first supporting protrusion, and an inclination angle of the first inclined surface ranges from 10 degrees to 80 degrees.

8. The all-in-one computer as claimed in claim 2, wherein a third mounting groove is formed in the middle frame, the air inlet is formed in a side wall of the third mounting groove, two speakers electrically connected with the main board are arranged in the third mounting groove, the two speakers are both located below the space between the display screens, and the sound outlet hole is formed in the bottom of the first mounting groove.

9. The all-in-one computer as claimed in claim 1, further comprising a rear cover, wherein the rear cover is provided with a plurality of clamping blocks arranged at intervals, clamping grooves are formed in the clamping blocks, a plurality of clamping holes matched with the clamping grooves are formed in the middle frame corresponding to the rear cover, clamping portions are radially arranged on the side walls of the clamping holes, and the clamping portions are inserted into the clamping grooves for matching.

10. The all-in-one computer as claimed in claim 9, further comprising a support, wherein the support comprises a support rod and a base, one end of the support rod is provided with a first rotating part, the first rotating part is fixedly connected with the rear cover, and the other end of the support rod is movably connected with the base through a second rotating part.