CN110242840A - A kind of lifting device and electronic equipment - Google Patents
A kind of lifting device and electronic equipment Download PDFInfo
- Publication number
- CN110242840A CN110242840A CN201910377756.0A CN201910377756A CN110242840A CN 110242840 A CN110242840 A CN 110242840A CN 201910377756 A CN201910377756 A CN 201910377756A CN 110242840 A CN110242840 A CN 110242840A
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- CN
- China
- Prior art keywords
- bracket
- camera
- motor
- lifting device
- electronic equipment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon Stands for scientific apparatus such as gravitational force meters
- F16M11/02—Heads
- F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
- F16M11/043—Allowing translations
- F16M11/046—Allowing translations adapted to upward-downward translation movement
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon Stands for scientific apparatus such as gravitational force meters
- F16M11/02—Heads
- F16M11/18—Heads with mechanism for moving the apparatus relatively to the stand
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon Stands for scientific apparatus such as gravitational force meters
- F16M11/20—Undercarriages with or without wheels
- F16M11/24—Undercarriages with or without wheels changeable in height or length of legs, also for transport only, e.g. by means of tubes screwed into each other
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
Abstract
This application provides a kind of lifting device and electronic equipment, which is applied in the electronic device, for making the camera in electronic equipment realize lifting action.The lifting device includes bracket, motor, camera bracket and transmission mechanism；Wherein, bracket is the moulding of nonmetallic materials；Motor is set to bracket；Camera bracket is slidably disposed in bracket；Transmission mechanism and motor and camera bracket are sequentially connected；Wherein, motor is used to drive camera bracket with respect to bracket slide by transmission mechanism.Bracket is the moulding of nonmetallic materials, therefore, has high low manufacture cost, throughput rate, shape and the easily controlled advantage of precision；To largely improve the competitiveness of product.In addition, since bracket uses nonmetallic materials, conducive to the lightweight for realizing bracket, facilitate the weight for reducing electronic equipment；Simultaneously as better anti-seismic performance can be provided in nonmetallic materials.
Description
Technical field
This application involves arrive technical field of electronic equipment more particularly to a kind of lifting device and electronic equipment.
Background technique
At this stage, the overall dimensions limitation for being limited by electronic equipment in the electronic device, screen is widely applied in screen sizes
The size of curtain also receives certain limitation.For example, display screen, camera, loudspeaker would generally be arranged in the front of mobile phone
Equal components, since camera and loudspeaker are also required to occupy certain space, the size of screen will receive certain limit
System.
In order to further increase screen size, the inside of mobile phone is arranged in camera by some producers on existing market, with
It vacates and returns certain space for placing screen in the front of mobile phone, therefore, is able to ascend the size of screen to a certain extent.
Wherein, camera generally stretches out mobile phone or retraction interior of mobile phone by way of lifting.For example, the camera of some producers
It can be stretched out by the top of mobile phone, when not needing using camera, driving camera retraction interior of mobile phone still works as motor
Biggish noise can be generated when driving camera lifting, it, at this stage would generally be when camera be gone up and down in order to cover the noise
Music is played to cover noise, but this mode can not fundamentally reduce generated noise when camera lifting, together
When, in more quiet environment, user is not intended to mobile phone to issue any sound, therefore, is unfavorable for promoting the usage experience of user.
Summary of the invention
The application's has been designed to provide a kind of lifting device, which applies in electronic equipment such as mobile phone
In, for making camera realize lifting action.
Above-mentioned target and other targets will be reached by the feature in independent claims.Further implementation exists
It is embodied in dependent claims, the description and the appended drawings.
In a first aspect, lifting device application in the electronic device, is taken the photograph for making this application provides a kind of lifting device
As head realizes lifting action.The lifting device includes bracket, motor, camera bracket and transmission mechanism；Wherein, bracket is non-gold
Belong to the moulding of material；Motor is set to the bracket；Camera bracket is slidably disposed in the bracket；Transmission mechanism with
The motor and camera bracket transmission connection；Wherein, the motor is used for by taking the photograph described in transmission mechanism driving
As the relatively described bracket slide of head bracket.Bracket is the moulding of nonmetallic materials, therefore, has low manufacture cost, production speed
Rate height, shape and the easily controlled advantage of precision；To largely improve the competitiveness of product.In addition, due to bracket
Using nonmetallic materials, therefore, conducive to the lightweight for realizing bracket, facilitate the weight for reducing electronic equipment；Simultaneously as non-
Better anti-seismic performance can be provided in metal material, therefore, the transmitting that motor shakes at runtime can be weakened, and then reduce
The noise of lifting device at runtime.
In the specific implementation, the material of bracket can be with are as follows: polyethylene, polypropylene, polyvinyl chloride, at least any in rubber
It is a kind of.In specific preparation, bracket can be made of injection molding process；I.e., it is possible to by the injection molding of molten condition
It is formed in material injection injection mold；Use the mode of injection molding can be with the producing efficiency and quality of lifting bracket.
In addition, motor can be bonded on bracket by binder；It can largely be promoted by way of bonding
The assembly efficiency of lifting device；For example, can be placed on motor on bracket after corresponding installation site in specific assembly,
Motor and bracket are bonded using binder；Assembling process is simple, not easy to make mistakes, so as to largely promote dress
With efficiency and yields, meanwhile, it is also convenient for realizing Automated assembly.
In the specific implementation, the material of the binder be polyethylene, it is polypropylene, at least any one in polyvinyl chloride
Kind.Wherein, the fusing point of binder can be lower than the fusing point of bracket, generate to avoid the binder of high temperature to the shape and structure of bracket
Adverse effect.
In an embodiment provided by the present application, the transmission mechanism includes the lead screw and sliding rack being mutually spirally connected；
The lead screw is coupled with the output shaft of the motor；The sliding rack is connect with the camera bracket；Wherein, the motor drives
When moving lead screw rotation, the sliding rack drives the camera bracket to move along the axis direction of the lead screw.
In the specific implementation, the helicitic texture with lead screw bolt can be set on sliding rack, it is sliding when lead screw rotation
Moving frame is moved along the axis direction of lead screw, so that camera bracket be driven to move along the axis direction of lead screw.
In addition, in order to avoid when camera is by external force in lifting device structural member or motor damage, it is described
Transmission mechanism further includes elastic component；The sliding rack is connected with the camera bracket by the elastic component.Specifically, when taking the photograph
When as head by external force, the external force can be absorbed by the deformation of elastic component, to avoid the structural member stress mistake in lifting device
It damages greatly, while being also avoided that motor is burnt because of load excessive.
In another embodiment provided by the present application, the transmission mechanism further includes slide bar, and the slide bar is set to institute
State bracket, and the axis parallel in the axle center of the slide bar and the lead screw；The sliding rack and the camera bracket are and institute
State sliding bar connection.This structure setting helps to improve the stationarity of sliding rack and camera bracket in moving process,
Meanwhile can also prevent sliding rack from rotating relative to lead screw, to help to provide transmission efficiency.
Second aspect, present invention also provides a kind of electronic equipment, including described in shell, camera and any one of the above
Lifting device；The bracket is set to the shell, and the camera is set to the camera bracket.
It in the specific implementation, can be between the bracket and the shell in order to reduce the vibration that lifting device is transferred in shell
Vibration absorptive material is set；Wherein, vibration absorptive material can effectively drop between the transmitting that is shaken between shell；Electricity can also be absorbed simultaneously
Machine at runtime caused by noise, and then be able to ascend the use feeling of user.
In order to promote stability of the camera in movement, in embodiment provided by the present application, electronic equipment further includes fixed
Position part, the locating piece are fixed in the shell, and the camera has sliding slot；Wherein, the locating piece is slideably set
It sets in the sliding slot, the length direction of the sliding slot is parallel with the glide direction of the camera.It in this way, can be with
Camera opposing electronic device shell is effectively avoided to generate shaking, to improve stationarity of the camera in movement.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for the lifting device that one embodiment of the application provides；
Fig. 2 is the exploded view for the lifting device that one embodiment of the application provides；
Fig. 3 is the partial structure diagram for the lifting device that another embodiment of the application provides；
Fig. 4 is the structural schematic diagram for the camera that another embodiment of the application provides；
Fig. 5 is the structural schematic diagram after lifting device provided by the embodiments of the present application is connect with camera；
Fig. 6 is the structural schematic diagram of electronic equipment provided by the embodiments of the present application；
Fig. 7 is another structural schematic diagram of electronic equipment provided by the embodiments of the present application；
Fig. 8 is the structural block diagram of stepping motor system provided by the embodiments of the present application；
Fig. 9 is the schematic diagram of the section structure of stepper motor provided by the embodiments of the present application；
Figure 10 is the partial structural diagram of stepper motor provided by the embodiments of the present application；
Figure 11 is stepping motor structure schematic diagram provided by the embodiments of the present application；
Figure 12 is structural schematic diagram when stepper motor provided by the embodiments of the present application is in the first rotation status；
Figure 13 is structural schematic diagram when stepper motor provided by the embodiments of the present application is in the second rotation status；
Figure 14 is structural schematic diagram when stepper motor provided by the embodiments of the present application is in third rotation status；
Figure 15 is a subdivision waveform of A phase current provided by the embodiments of the present application；
Figure 16 is another subdivision waveform of A phase current provided by the embodiments of the present application；
Figure 17 is another subdivision waveform of A phase current provided by the embodiments of the present application；
Figure 18 is the waveform diagram of A phase current provided by the embodiments of the present application；
Figure 19 is the schematic diagram of H-bridge circuit provided by the embodiments of the present application.
Specific embodiment
Term used in following embodiment is intended merely to for the purpose of describing particular embodiments, and is not intended as pair
The limitation of the application.As the description of the present application and it is used in the attached claims, odd number expression form " one
It is a ", "an", " described ", " above-mentioned ", "the" and " this " be intended to also include such as " one or more " this expression-form,
Unless hereinafter clearly there is opposite instruction thereon.It is also understood that in the following embodiment of the application, "at least one",
" one or more " refer to one, two or more.Term "and/or", for describing the incidence relation of affiliated partner, table
Show that there may be three kinds of relationships；For example, A and/or B, can indicate: individualism A exists simultaneously A and B, the feelings of individualism B
Condition, wherein A, B can be odd number or plural number.Character "/" typicallys represent the relationship that forward-backward correlation object is a kind of "or".
The reference " one embodiment " described in the present specification or " some embodiments " etc. mean the one of the application
It include special characteristic, structure or the feature in conjunction with embodiment description in a or multiple embodiments.As a result, in the present specification
Difference occur sentence " in one embodiment ", " in some embodiments ", " in some other embodiment ", "
In other embodiment " etc. it is uninevitable all referring to identical embodiment, mean " one or more but not all
Embodiment ", only otherwise in addition especially emphasize.The terms "include", "comprise", " having " and their deformation are all
Mean " including but not limited to ", only otherwise in addition especially emphasizes.In order to facilitate understanding that the embodiment of the present application mentions
The lifting device of confession, illustratively its application scenarios, the lifting device are generally applicable to electronic equipment, such as hand first below
Machine, tablet computer or laptop etc..But no matter which kind of electronic equipment is used, it can be comprising the disclosure as set forth herein
Lifting device.
Nowadays, it is contemplated that the portability of electronic equipment (such as mobile phone etc.), the overall dimensions of electronic equipment will not be all arranged
It is especially big, however, in order to promote the use feeling of user, it will usually which the size of screen is carried out maximization setting；Compared with large-size screen monitors
Curtain can provide more display contents and better visual effect for user, but the front of electronic equipment is in addition to being arranged screen
It also needs that more other function component is arranged in addition.
It takes the mobile phone as an example, display screen, camera and loudspeaker would generally be arranged in the front of mobile phone, wherein user can pass through
The camera realizes the functions such as self-timer, video calling, in order to avoid camera is to the space hold of mobile phone front, at present in mobile phone
Start using liftable camera, i.e. camera can realize lifting action by lifting device；For example, when user needs to clap
When according to, video calling, lifting device can control camera to stretch out from interior of mobile phone, when not needing using camera, lifting dress
Set controllable camera retraction interior of mobile phone, but lifting device control camera stretched out, the movement such as retraction when, can produce
Raw loud noise, can have an impact mobile phone internal components, also reduce the use feeling of user, for this purpose, the embodiment of the present application
A kind of lifting device that can improve noise problem is provided, so as to reduce the negative shadow to other devices of interior of mobile phone
It rings, while the use feeling of user can also be promoted.
As depicted in figs. 1 and 2, in one embodiment provided by the present application, lifting device 10 includes bracket 110, motor
120, transmission mechanism (not indicated in figure), wherein transmission mechanism may include the components such as lead screw 140 and sliding rack 150) and
Camera bracket 130；Wherein, bracket 110 is used to for motor 120 or transmission mechanism being set to the shell of electronic equipment, camera shooting
Head bracket 130 is used to camera being set to lifting device；Motor 120 drives camera bracket 130 to realize by transmission mechanism
Lifting action, so that camera can realize lifting action relative to electronic equipment；Wherein, in specific application, it images
Head can pass through circuit board, the electricity in flexible printed circuit board (flexible printed circuit, FPC) and electronic equipment
The elements such as source, processor electrical connection, to realize the transmission of electric energy and electric signal.
In the specific implementation, the moulding that bracket 110 can be integrally formed, so as to reduce the production of bracket 110
Cost, while being also conducive to realize the lightweight of bracket 110.When specifically being made, the injected plastics material of molten condition can be infused
Enter in injection mold and is formed.Using the production method of injection molding, the throughput rate of bracket 110 can be improved, be also convenient for reality
Existing automated production, in addition, the shape and precision of bracket 110 can also be well controlled, so as to guarantee bracket 110
Quality.
Wherein, the material of injected plastics material is specifically as follows the non-metallic materials such as polyethylene, polypropylene, polyvinyl chloride, rubber,
It is of course also possible to be above two and two or more mixture.
It is arranged when on bracket 110 by motor 120, various ways can be used.For example, in a reality provided by the present application
It applies in example, motor 120 can be bonded on bracket 110 using binder.It can largely mention in this way
Assembly efficiency is risen, so as to reduce cost of manufacture.In addition, since some binders can have certain elasticity, it is thus possible to
The transmitting of noise is enough reduced, i.e., generated vibration can be absorbed motor 120 by binder in the running, to reduce transmitting
Vibration to bracket 110；Simultaneously as bracket 110 can be the non-metallic materials such as polyethylene, polypropylene, polyvinyl chloride, rubber
Matter, therefore, it may have preferable shock absorbing characteristics, so as to reduce the noise of entire lifting device.
Under normal conditions, accommodating chamber can be provided in electronic equipment to accommodate the lifting device, therefore, when lifting device exists
Generated vibration can be directly delivered in electronic equipment when movement, and very possible and electronic equipment causes resonance.In order to
Avoiding lifting device, when controlling camera lifting, generated vibration is directly delivered in electronic equipment and electronic equipment causes
The problem of resonance, takes the mobile phone as an example as shown in Figure 6 and Figure 7, in one embodiment provided by the present application, lifting device 10 with
Sound-absorbing material 50 is also provided between the shell 410 of mobile phone 40.
In some embodiments, sound-absorbing material 50 can be foam, silica gel piece etc.；For example, when sound-absorbing material is foam,
It can be set between lifting device 10 and handset shell 410.Certainly, sound-absorbing material also can be set in the periphery of motor 120
Or the periphery of other structures part, further to promote noise reduction effect.
In addition, various ways can be used in the setting of bracket 110 in electronic equipment.For example, screw can be used；Specifically
, through-hole or threaded hole can be set on bracket, threaded hole or through-hole are set in the electronic device；Screw pass through through-hole after with
Screw hole, to realize being fixedly connected between bracket and electronic equipment.
Furthermore it is also possible to which bracket 110 is bonded in electronic equipment using binder.It in this way can be very big
Assembly efficiency is promoted in degree, so as to reduce cost of manufacture.In addition, since some binders can have certain elasticity,
It is thus possible to enough reduce noise, i.e. lifting device generated vibration in movement can be absorbed by binder, to reduce
It is transferred to the vibration of electronic equipment.
In the specific implementation, thermosetting property glue also can be used bracket 110 is bonded in electronic equipment；Wherein, the thermosetting
The specific material of type glue can be polyethylene, polypropylene, polyvinyl chloride, polystyrene etc..
In addition, by motor 120 using binder be fixed on bracket 110 when, binder is specifically as follows heat curing type glue
Water；Wherein, the specific material of the heat curing type glue can be polyethylene, polypropylene, polyvinyl chloride, polystyrene etc..
Since motor 120 being fixed on bracket 110 using heat curing type glue, it is needed in the process to thermosetting
Type glue is heated, and may accelerate the loss of lubricating oil in motor 120 during heating；Therefore, it is provided in the application
One embodiment in, after motor 120 being fixed on bracket 110 using heat curing type glue, staff can be to motor
120 carry out repairing, to promote the lubricant effect in motor 120 between moving component, so as to reduce electricity to a certain extent
Machine at runtime caused by noise.
Wherein, in some embodiments, motor 120 can make camera realize lifting action by transmission mechanism, wherein
The specific structure setting of transmission mechanism can be a variety of.As depicted in figs. 1 and 2, in one embodiment provided by the present application, electricity
Machine 120 can realize the lifting of camera bracket by the driving form of feed screw nut.
Specifically, the output shaft of motor 120 is coupled with lead screw 140, lead screw 140 is driven to turn together when output shaft rotation
It is dynamic, the relative rotation between lead screw 140 and nut in rotation of lead screw 140, so that nut be driven to do in the axial direction of lead screw 140 directly
Line movement.
Wherein, in embodiment provided by the present application, which can also include sliding rack 150, nut and sliding
Framework, which is made, to be structure as a whole；Specifically, it is provided with the helicitic texture for matching with lead screw 140 on sliding rack 150, works as electricity
When machine 120 drives lead screw 140 to rotate, it can be relatively rotated between lead screw 140 and sliding rack 150, to drive 150 edge of sliding rack
It is moved in a straight line in the axial direction of lead screw 140.
In order to guarantee the ride comfort of sliding rack 150 during exercise, in further embodiments, transmission mechanism can also include
The slide bar 160 being set on bracket 110；There is the slide opening being slidably matched with slide bar 160, slide bar 160 is slidably on sliding rack 150
Ground is threaded through in the slide opening of sliding rack 150；Wherein, the axle center of slide bar 160 and the axle center of lead screw 140 are parallel to each other and do not set coaxially
It sets.
When motor 120 drives lead screw 140 to rotate, relatively rotated between lead screw 140 and sliding rack 150, meanwhile, in slide bar
Under the action of 160, sliding rack 150 is only capable of the axis upward sliding along lead screw 140 or slide bar 160 and cannot rotate, therefore protects
Stability and ride comfort of the sliding rack 150 in sliding are demonstrate,proved.
In above-described embodiment provided by the present application, the positioning of lead screw 140 is arranged on bracket 110, in order to guarantee lead screw 140
Positioning accuracy, as shown in Fig. 2, lead screw 140 can be set on bracket 110 by bearing 180；In addition, passing through bearing 180 for silk
Thick stick 140 is set on bracket 110, additionally it is possible to frictional resistance of the lead screw 140 in rotation is reduced, meanwhile, it also can reduce lead screw
140 during rotation caused by noise.
In embodiment provided by the present application, camera bracket 130 is connect with sliding rack 150, when sliding rack 150 is gone up and down
When, camera bracket 130 can be driven to carry out lifting action.
Wherein, camera may be subjected to the obstruction of external force when stretching out electronic equipment.For example, when camera is gradually
When stretching out electronic equipment, it may be stopped by the hand of user or other objects, in order to prevent motor overload, lifting device
Structural member be damaged, in one embodiment provided by the present application, transmission mechanism further includes spring.
Specifically, as shown in figure 3, can be attached by spring 170 between sliding rack 150 and camera bracket 130.
At the same time referring to Figures 1 and 2, when needing to stretch out camera in electronic equipment, motor 120 is rotated, and is driven by lead screw 140
Dynamic sliding rack 150 slides, and sliding rack 150 drives camera bracket 130 to slide by spring 170, thus by camera from electronics
It is released in equipment；If camera is hindered and cannot continue to stretch out in the process, spring 170 is compressed, and is slided simultaneously
Frame 150 remains to continue to slide under the drive of the motor, thereby may be ensured that the safety of structural member in motor and lifting device, prevents
Only motor overload and structural member stress it is excessive and the case where damage.In addition, when camera is in retraction electronic equipment internal, it may
It is when will receive external force and immovable；For example, motor remains to drive when user, which holds camera, to be prevented in its retraction electronic equipment
Dynamic sliding rack 150 slides, at this point, spring 170 is stretched, thus it is also ensured that, the peace of structural member in motor and lifting device
Quan Xing, prevent motor overload and structural member stress it is excessive and the case where damage.
Wherein, in order to guarantee stability of the camera bracket 130 in sliding, which is slidably disposed in
On slide bar 160；There is the slide opening matched with slide bar 160 on camera bracket 130.
As shown in Figure 4 and Figure 5, in order to guarantee stability of the camera 20 in sliding, 20 opposing electronic of camera is prevented
Equipment is shaken；In one embodiment provided by the present application, there is locating piece 30 in electronic equipment, be equipped with sliding slot in camera 20
210, which is slidably matched with locating piece 30, wherein the length direction and lead screw 140 of sliding slot 210 or the axis of slide bar 160
The heart is parallel；Specifically, when carrying out lifting action under driving of the camera in motor 120, which can be in sliding slot
Opposite camera 20 slides in 210；In addition, between the left and right two side walls of the locating piece 30 and sliding slot 210 offset or keep small
Gap, to prevent camera 20 from shaking with respect to the locating piece 30.
In addition, the stroke when cooperation of the locating piece 30 and sliding slot 210 can also go up and down camera 20 limits.
For example, locating piece 30 and the side wall of lower part in sliding slot 210 offset after camera stretches out electronic equipment certain length, thus anti-
Only camera continues to stretch out；After camera retraction electronic equipment internal, the side wall phase of locating piece 30 and 210 internal upper part of sliding slot
It supports, to prevent camera from continuing retraction.
In further embodiments, stroke of the camera when being gone up and down can also be controlled by motor.For example,
The motor can be stepper motor；Since stepper motor is the element for electric impulse signal being converted into mechanical angular displacement, and one
Electric impulse signal can drive stepper motor to rotate a step angle, therefore, the angle and electric arteries and veins that rotor turns in stepper motor
The number of punching is proportional to, therefore directly the control of pulse signal quantity can be turned over to control rotor in stepper motor
Angle, and then control the stroke of camera.
Specifically, as shown in figure 8, generally comprising controller, driver and stepper motor etc. in stepping motor system
Structure.Wherein, controller is used for driver pulsing signal；In the specific implementation, controller can be single-chip microcontroller, control
Card etc., or the power supply IC (power management IC) in electronic equipment.The function of driver is controller institute
The pulse signal of hair is converted to angular displacement and then is then forwarded to stepper motor, to drive stepper motor to rotate.The fortune of stepper motor
The frequency of scanning frequency degree and pulse signal is proportional, and the quantity of angle and pulse signal that rotor turns over is proportional.
As shown in figure 9, stepper motor 120 can be made of stator 121 and 122 two parts of rotor in structure, wherein
Stator 121 and rotor 122 are magnetic material；For example, please referring to Figure 11, rotor in one embodiment provided by the present application
122 have ten magnetic poles, wherein ten magnetic poles are according to the pole N, S interpolar every being uniformly distributed；As shown in Figure 10, stator has first
Layer pawl pole 1211 and second layer pawl pole 1212, wherein the outside of first layer pawl pole 1211 is equipped with control winding, be denoted as A phase around
Group can generate alternate N, S magnetic pole in first layer pawl pole 1211 after A phase winding is powered；The outside of second layer pawl pole 1212
Equipped with control winding, it is denoted as B phase winding, after B phase winding is powered, alternate N, S magnetic pole can be generated in second layer pawl pole 1212；
When stepper motor work when, A phase winding, B phase winding are powered simultaneously, by change A phase winding, B phase winding energization direction come
The position for changing N, S magnetic pole, so that rotor be driven to rotate.
As shown in figure 12, A phase winding leads to forward current at this time, B phase winding leads to forward current.As shown in figure 13, when A phase around
When group is changed to negative current, B phase winding leads to forward current, the position of N, S magnetic pole generates replacement in first layer pawl pole 1211, thus
Driving rotor 122 is rotated in the clockwise direction.As shown in figure 14, when A phase winding leads to negative current, B phase winding is changed to logical negative sense
When electric current, the position of N, S magnetic pole generates replacement in the second pawl pole 1212, to continue that rotor is driven to be rotated in the clockwise direction.
In order to reduce stepper motor generated noise at runtime, in one embodiment provided by the present application, driving
Device can drive stepper motor using PWM subdivision technology.Specifically, exactly make by the electric current of each control winding by
Traditional rectangular wave becomes the wave that ladder rises or falls.Multiple stable intermediate state are given between 0 and maximum value.
As shown in figure 15, a subdivision waveform of A phase current has been included；Wherein, Im indicates maximum current value.Traditional
Pulse current or it is zero or is maximum value Im.In embodiment provided by the present application, pulse current is finely divided, zero
It is divided into multistage to maximum value；As shown in Figure 16 and Figure 17, with the increase of number of segment, waveform is constantly close to sine wave.In reality
In, number of segment mostly from 2 to 32 between or it is more.
Vibration of the rotor in rotation can be reduced in this way, to reduce the noise of stepper motor.
Under normal conditions, driver realizes PWM current regulation by the inductance characteristic of control winding in stepper motor.With
PWM control starts, and supply voltage is added in machine winding, to generate driving current.Once electric current reaches setting value, driving
H-bridge circuit (please referring to Figure 19) in device will switching control state so that output current attenuation.It will cause electricity in the process
The sharp-decay of stream.As shown in figure 18, since Im value is greater than the setting value, under the control of H-bridge circuit, it will cause electricity
The sharp-decay of stream, so as to increase vibration and the noise of rotor.For this purpose, in embodiment provided by the present application, it can be right
Maximum current value Im is weakened, and maximum current value Im is made therefore not will cause sharply declining for electric current no more than the setting value
Subtract, so that ride comfort of the rotor in rotation can also be promoted, reduces noise.In the specific implementation, many experiments can be passed through
Power supply IC to obtain in the maximum current value, such as electronic equipment can suitably reduce the output of maximum current value, to be promoted
Ride comfort of the rotor in rotation.
In addition, stepper motor, in order to realize good lifting effect, can be set when carrying out lifting driving to camera
Torque caused by stepper motor is larger with respect to the difference for the resistance that camera is subject in lifting process.
Specifically, the resistance that camera is subject in lifting process includes but is not limited to each composition portion in transmission mechanism
Part generated frictional resistance in mutual movement.For example, can be deposited between sliding rack and slide bar when sliding rack is with respect to bracket slide
In certain frictional resistance；When lead screw and sliding rack relatively rotate, certain frictional resistance can be also generated.
By above-mentioned design, due to for drive stepper motor act pulse current it is excessive after, can expanded motor generate
Noise.Therefore, in embodiment provided by the present application, the maximum value Im of pulse current is rationally reduced, so that stepping
The resistance that torque caused by motor is subject to when going up and down slightly larger than camera, it is generated at runtime so as to reduce motor
Noise.
Certainly, in the specific implementation, can also be adjusted by the resistance value to the resistance R1 in H-bridge circuit, or
Pulse current value Im and resistance R1 are adjusted simultaneously, the effect of generated noise when motor operation is reduced to realize.
It is used in above embodiments, based on context, term " when ... " or " when ... after " can be interpreted to mean
" if ... " or " ... it is rear " or " in response to determination ... " or " in response to detecting ... ".Similarly, based on context, phrase
" when in determination ... " or " if detecting (condition or event stated) " can be interpreted to mean " if it is determined that ... "
Or " in response to determination ... " or " when detecting (condition or event stated) " or " in response to detecting (the item stated
Part or event) ".In addition, in the above-described embodiments, carrying out the entity in area part using such as first, second etc relational terms
With another entity, and it is not intended to limit any actual relationship and sequence between these entities.
In the above-described embodiments, can come wholly or partly by software, hardware, firmware or any combination thereof real
It is existing.When implemented in software, it can entirely or partly realize in the form of a computer program product.The computer program
Product includes one or more computer instructions.When loading on computers and executing the computer program instructions, all or
It partly generates according to process or function described in the embodiment of the present invention.The computer can be general purpose computer, dedicated meter
Calculation machine, computer network or other programmable devices.The computer instruction can store in computer readable storage medium
In, or from a computer readable storage medium to the transmission of another computer readable storage medium, for example, the computer
Instruction can pass through wired (such as coaxial cable, optical fiber, number from a web-site, computer, server or data center
User's line (DSL)) or wireless (such as infrared, wireless, microwave etc.) mode to another web-site, computer, server or
Data center is transmitted.The computer readable storage medium can be any usable medium that computer can access or
It is comprising data storage devices such as one or more usable mediums integrated server, data centers.The usable medium can be with
It is magnetic medium, (for example, floppy disk, hard disk, tape), optical medium (for example, DVD) or semiconductor medium (such as solid state hard disk
Solid State Disk (SSD)) etc..
It should be pointed out that a part of patent application document includes the content by copyright protection.In addition to patent
Other than the patent document of office or the patent file content production copy of record, copyright owner retains copyright.
Claims (10)
1. a kind of lifting device characterized by comprising
Bracket is the moulding of nonmetallic materials；
Motor is set to the bracket；
Camera bracket is slidably disposed in the bracket；
Transmission mechanism is sequentially connected with the motor and the camera bracket；
Wherein, the motor is used to drive the relatively described bracket slide of camera bracket by the transmission mechanism.
2. lifting device according to claim 1, which is characterized in that the motor is bonded in the bracket by binder
On.
3. lifting device according to claim 2, which is characterized in that the material of the binder be polyethylene, polypropylene,
In polyvinyl chloride at least any one.
4. lifting device as claimed in any of claims 1 to 3, which is characterized in that the material of the bracket is poly-
Ethylene, polypropylene, polyvinyl chloride, in rubber at least any one.
5. lifting device as claimed in any of claims 1 to 4, which is characterized in that the transmission mechanism includes phase
The lead screw and sliding rack being mutually spirally connected；
The lead screw is coupled with the output shaft of the motor；
The sliding rack is connect with the camera bracket；
Wherein, when lead screw described in the motor driven rotates, the sliding rack drives the camera bracket along the lead screw
Axis direction is mobile.
6. lifting device according to claim 5, which is characterized in that the transmission mechanism further includes elastic component；The cunning
Moving frame is connected with the camera bracket by the elastic component.
7. lifting device according to claim 5, which is characterized in that the transmission mechanism further includes slide bar, the slide bar
It is set to the bracket, and the axis parallel in the axle center of the slide bar and the lead screw；
The sliding rack and the camera bracket are connect with the sliding bar.
8. a kind of electronic equipment, which is characterized in that including shell, camera and as claimed in any of claims 1 to 7 in one of claims
Lifting device；
The bracket is set to the shell, and the camera is set to the camera bracket.
9. electronic equipment according to claim 8, which is characterized in that further include vibration absorptive material, the vibration absorptive material is at least
It is arranged between the bracket and the shell.
10. electronic equipment according to claim 8, which is characterized in that further include locating piece, the locating piece is fixed on institute
It states in shell, the camera has sliding slot；
Wherein, the locating piece is slidably disposed in the sliding slot, the length direction of the sliding slot and the camera
Glide direction is parallel.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910377756.0A CN110242840A (en) | 2019-05-05 | 2019-05-05 | A kind of lifting device and electronic equipment |
| PCT/CN2020/086715 WO2020224454A1 (en) | 2019-05-05 | 2020-04-24 | Lifting apparatus and electronic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910377756.0A CN110242840A (en) | 2019-05-05 | 2019-05-05 | A kind of lifting device and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110242840A true CN110242840A (en) | 2019-09-17 |
Family
ID=67883785
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910377756.0A Pending CN110242840A (en) | 2019-05-05 | 2019-05-05 | A kind of lifting device and electronic equipment |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110242840A (en) |
| WO (1) | WO2020224454A1 (en) |
Cited By (5)
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| CN111556181A (en) * | 2020-04-17 | 2020-08-18 | 维沃移动通信有限公司 | Electronic device |
| WO2020224454A1 (en) * | 2019-05-05 | 2020-11-12 | 华为技术有限公司 | Lifting apparatus and electronic device |
| CN111953880A (en) * | 2020-09-05 | 2020-11-17 | 桂林电子科技大学 | Intelligent image acquisition device and method |
| CN112954143A (en) * | 2019-11-26 | 2021-06-11 | 荣耀终端有限公司 | Camera telescoping device, camera subassembly and electronic equipment |
| CN113923321A (en) * | 2020-07-08 | 2022-01-11 | 荣耀终端有限公司 | Camera lifting module and electronic equipment |
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Also Published As
| Publication number | Publication date |
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| WO2020224454A1 (en) | 2020-11-12 |
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Effective date of registration: 20210428 Address after: Unit 3401, unit a, building 6, Shenye Zhongcheng, No. 8089, Hongli West Road, Donghai community, Xiangmihu street, Futian District, Shenzhen, Guangdong 518040 Applicant after: Honor Device Co.,Ltd. Address before: 518129 Bantian HUAWEI headquarters office building, Longgang District, Guangdong, Shenzhen Applicant before: HUAWEI TECHNOLOGIES Co.,Ltd. |
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Application publication date: 20190917 |