CN201232833Y

CN201232833Y - Three-freedom-degree control device for display

Info

Publication number: CN201232833Y
Application number: CNU2008201177899U
Authority: CN
Inventors: 冯辅周; 魏振升; 江鹏程
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-06-18
Filing date: 2008-06-18
Publication date: 2009-05-06
Anticipated expiration: 2018-06-18

Abstract

The utility model relates to a control device which adopts single power source to control a display to be moved on three degrees of freedom. The control device generates and outputs rotating motion and lifting motion by adopting a feed screw and nut structure, and generates and outputs pitching motion through the relative rectilinear motion of two nuts being matched and arranged on a feed screw. The control device also comprises two locking switches, which controls the control device to output the motions with different degrees of freedom through controlling the opening and the closing of the locking switches. The control device can realize the rotating motion, the lifting motion and the pitching motion through a power source, the feed screw and nut, and a plurality of mechanisms only, has the advantages of simple structure and convenient technical application, and can be used as a carrying platform to be applied to structures requiring a plurality of degrees of freedom.

Description

The Three Degree Of Freedom control gear of display device

Technical field

The utility model relates to a kind of Three Degree Of Freedom control gear of display device, and is particularly related to a kind of control gear that adopts single power source control display device to move on three degree of freedom.

Background technique

Liquid crystal display product becomes the demonstration product of Consumer's first-selection just gradually, because its angular field of view is limited and attitude is fixed, people's viewing location and watch posture to be subjected to certain restriction can not fully satisfy people's visual enjoyment demand, has therefore produced the demand of liquid crystal screen attitude controllable device.Generally speaking, the control to the liquid crystal screen attitude comprises lifting, rotation and pitching three degrees of freedom of movement.

On the development history of mechanics, in order to realize a plurality of degrees of freedom, people mainly wait and realize by a plurality of steering wheels or motor, oil hydraulic cylinder, cylinder and plunger, motor.The realization of each degrees of freedom of this mechanism substantially all needs a power mechanism, and its expense is expensive and need more fixed component, and therefore multivariant realization largely all is piling up of a plurality of power mechanisms.

The single power source that can be used as at present commonly used realizes that multivariant mode realizes by oil hydraulic cylinder and plunger, motor, solenoid valve, but its expense is very high.Only realize that by mechanical structure the method for a plurality of degrees of freedom is also considerably less, be not subjected to enough attention and deep research.

Summary of the invention

The purpose of this utility model is to provide a kind of Three Degree Of Freedom control gear of display device, uses a motor or other power sources, realizes a plurality of degrees of freedom outputs by this control gear.A plurality of degrees of freedom mentioned in the utility model are moved, and particularly are three degree of freedom, i.e. rotation, elevating movement and pitching movement.

In order to realize this purpose, consider to adopt power screw.With reference to figure 1, in power screw, under the situation of leading screw, outside screw is not subjected to during tangential force, utilizes leading screw that the tangential force of screw is driven the mechanism that connects with screw and can realize rotating as driving link.When screw was subjected to tangential force, screw can not rotate lead screw straight-line relatively and realize screw and the lifting of carrying platform thereof.Utilize whether applying of the outer tangential force of controlled blocking device decision screw, realize respectively rotating and elevating movement.Pitching movement can realize by linear relative movement, by adding a screw again, idle running and highly constant the stable of platform that keep take place when utilizing one of them screw not to be subjected to tangential force, another screw applies outer tangential force makes it that straight line motion take place, realize the linear relative movement with platform, and then be converted into the mechanism of rotation such as connecting rod or rack pinion by straight line motion and transform and obtain pitching movement.

The Three Degree Of Freedom control gear of display device of the present utility model comprises: supporting part comprises base, rolling disc, support arm, platform; The power screw part, comprise leading screw and respectively with the last screw and the following screw of threads of lead screw engagement; The conversion of motion part comprises the urceolus of fixedlying connected with following screw, and the inner core of fixedlying connected with last screw can generate mechanism with respect to the lifting axis and the pitching movement of supporting part lifting, and wherein, inner core is enclosed within the urceolus, and both do not contact mutually; The locking control section comprises first latch switch and second latch switch, and first latch switch is used for the described urceolus of locking, and second latch switch is used for the described supporting part of locking; Wherein, by controlling opening or the output of locking realization control gear rotation, elevating movement or pitching movement of first latch switch and second latch switch.

Wherein, described supporting part also comprises downforce bearing and upward pressure bearing, and rolling disc places on the base by the downforce bearing, can rotate relative to base; Support arm is fixed on the rolling disc; The lifting axis bottom places the endoporus of support arm, can move up and down with respect to support arm; The fixedly connected platform in lifting axis top; Platform passes through the upward pressure bearings on urceolus.

The utility model is by a power source and a rhizoid thick stick, and two screws and conversion of motion mechanism and locking mechanism have been realized the motion of display device on three degree of freedom, and be simple in structure, and good economy performance has improved the utilization ratio of motor.The minimizing of its simple structure and power source helps improving the maintainalbility of device.Overcome the complicated problems that connects up in the prior art to a certain extent.With respect to the device of a plurality of power sources, the better reliability that it is mechanical, institute takes up space less relatively, adopts power screw, and ouput force is big, therefore more helps engineering and uses.The utility model is except that the lift-launch platform that can be used for TV or computer liquid crystal screen remote control unit, also can be used as and carry platform application in the mechanical structure that needs Three Degree Of Freedom, as the mechanical platform of automatic tracking solar instrument, large-scale or small-sized machine arm, militarily also can be used as the remote control machine gun platform of unmanned battlebus etc.

Description of drawings

Fig. 1 is the different motion state description the figure whether outer tangential force of screw applies;

Fig. 2 is the front view of control gear described in the utility model;

Fig. 3 is that the D-D of the control gear of the utility model shown in Fig. 2 is to sectional drawing;

Fig. 4 is the T-T and the O-O top plan view of the control gear of the utility model shown in Fig. 2;

Fig. 5 is the schematic representation of control gear described in the utility model.

Embodiment

Below in conjunction with accompanying drawing preferred implementation of the present utility model is described.

With reference to figure 2-4, the utility model provides a kind of control gear that adopts single power source control display device to move on three degree of freedom, and described a plurality of degrees of freedom outputs comprise rotation, elevating movement and pitching movement.This control gear comprises supporting part, power screw part, conversion of motion part and locking control section.Wherein, supporting part mainly comprises base 1, rolling disc 4, support arm 5, platform 11 and downforce bearing 3 and upward pressure bearing 9.Power screw partly comprise leading screw 12, go up screw 14 and following screw 13.Conversion of motion comprises that partly urceolus 6, inner core 15, lifting axis 8, pitching movement generate mechanism 16 and platform transverse axis 10.The locking control section comprises first latch switch 7 and second latch switch 2.Power source provides power by reducing gear to leading screw 12.Power source be can outputting power mechanism, motor for example.Reducing gear can be gear mechanism, pulley mechanism or worm-and-wheel gear etc.The motion that is converted to each degrees of freedom that moves through control gear of power source input, these motions are final by 10 outputs of platform transverse axis, and display device is installed on the platform transverse axis 10.

Base 1 is used to support entire mechanism, mainly is made of three screw rods, two pallets, 12 nuts, and its function is to regulate height and levelness.This understructure only is an example, can select suitable base form according to the demand of practical application, and for example flat type, casing form or the like also can directly will be carried the device of this control gear as base.Rolling disc 4 places on the base 1 by downforce bearing 3, and base 1 constitutes revolute pairs with rolling disc 4, and the snap ring on the rolling disc 4 is connected with projection on the base 1, and fixedly rolling disc 4 is at horizontal position.Two support arms 5 are fixed on the rolling disc 4.The bottom of two lifting axiss 8 places the endoporus of two support arms 5 respectively, and can lifting in support arm 5.Fixedly connected with platform 11 in the top of lifting axis 8.Platform transverse axis 10 is supported on the platform 11 in rotating mode.

The power that power source provides is delivered to leading screw 12 through reducing gear.Following screw 13 and last screw 14 are nested in leading screw 12 peripheries respectively, and with leading screw 12 thread engagement.Following screw 13 is fixedlyed connected with urceolus 6, and following screw 13 can be that independent screw parts are fixed on the urceolus 6 by certain Placement, also can be the thread section that directly processes on the inwall of urceolus 6.Platform 11 is carried by upward pressure bearing 9 in urceolus 6 upper ends, and platform 11 can rotate with respect to urceolus 6.Last screw 14 is fixedlyed connected with inner core 15, and last screw 14 can be that independent screw parts are fixed on the inner core 15 by certain Placement, also can be the thread section that directly processes on the inwall of inner core 15.Inner core 15 is positioned at urceolus 6 diametrically, and is contactless between the two, and inner core 15 can stretch out from urceolus 6 tops.The periphery bottom of inner core 15 is that cylindric top is polygonal, has the polygonal hole that matches with the polygonal periphery of inner core 15 on the platform 11, and inner core 15 stretches out from the hole of platform 11, can be relative to platform 11 liftings but can not rotate.The inner core 15 that stretches out from platform 11 is connected with platform transverse axis 10 through the pitching movement generation mechanism 16 that is made up of two connecting rods.Inner core 15 also can generate mechanism and be connected with platform transverse axis 10 by the pitching movement of being made up of gear rack, promptly inner core 15 is connected with tooth bar, the wheel and rack engagement, and platform transverse axis 10 is fixed on the Gear center place, rotates with gear.

First latch switch 7 is installed on the support arm 5, also can be installed on the lifting axis 8, thereupon a lifting.Second latch switch 2 is installed on the base 1.First latch switch 7 and second latch switch 2 are the electromagnet of repacking, mounting spring on its iron core, and during energising, electromagnet overcomes spring force iron core is sucked back; The iron core locking of under the effect of spring force, rebounding during outage.Urceolus 6 is peripheral cylinder-like structure with a plurality of elongated slots, and first latch switch, 7 locking urceolus 6 limit the rotation of urceolus 6, but can not stop the lifting of urceolus 6.Rolling disc 4 is peripheral disk with a plurality of grooves, and second latch switch, 2 locking rolling discs 4 can not rotate rolling disc 4.

The implementation procedure of rotation, lifting and pitching movement is described respectively below with reference to accompanying drawing 5.

Rotate:First latch switch, 7 locking urceolus, 6, the second latch switches, 2 releases this moment.Power source drives leading screw 12 through reducing gear and rotates, the rotation of leading screw 12 is by screw 13 and last screw 14 are delivered to respectively on urceolus 6 and the inner core 15 down, drive support arm 5, rolling disc 4, lifting axis 8 and platform 11 by first latch switch 7 and platform respectively then and rotate together, thereby realize unitary rotation.Owing to below the rolling disc 4 downforce bearing 3 is housed, so leading screw 12 only need offer down screw 13 and last screw 14 very little tangential forces can realize unitary rotation.

Lifting:This moment, first latch switch 7 and second latch switch 2 were blocking, and urceolus 6 and rolling disc 4 can not be rotated by locking.Because rolling disc 4 can not rotate, and makes coupled support arm 5, lifting axis 8 and platform 11 all can not rotate.Because between the hole in the platform 11 and the top of inner core 15 is polygonal matching relationship, both can not relatively rotate, so inner core 15 can not rotate.Power source drives leading screw 12 via reducing gear and rotates, first latch switch 7 offers down screw 13 with tangential force through urceolus 6, second latch switch 2 offers screw 14 with tangential force through rolling disc 4, support arm 5, lifting axis 8, platform 11 and inner core 15, therefore go up screw 14 and following screw 13 and all can not rotate, the rotation of leading screw 12 produces vertical power to screw 13 and last screw 14 down and then realizes the integral elevating of screw 14 and following screw 13, inner core 15 and urceolus 6 and lift-launch platform 11 thereof up and down.

Pitching:First latch switch, 7 releases this moment, 15 lockings of second latch switch.Make urceolus 6 and following screw 13 not be subjected to outer tangential force because

urceolus

6 and 11 on platform are 7 releases of upward pressure bearing 16, the first latch switches, following screw 13 dallies together with urceolus 6 under the drive of leading screw 12, and then makes platform 11 highly keep stable.Second latch switch, 2 locking rolling discs 4, make coupled support arm 5, lifting axis 8, platform 11 and inner core 15 all can not rotate, thereby offer screw 14 tangential force in addition by inner core 15, make screw 14 and inner core 15 produce straight line motion with respect to leading screw 12, inner core 15 is converted to platform transverse axis 10 relative to the vertical motion of platform 11 by linkage mechanism 16 and rotates i.e. pitching movement around himself axis.

Claims

1, the Three Degree Of Freedom control gear of display device comprises:

Supporting part (1,3,4,5,9,11) comprises base (1), rolling disc (4), support arm (5), platform (11);

Power screw parts (12,13,14) comprise leading screw (12) and pass through the last screw (14) and the following screw (13) of thread engagement with it;

Conversion of motion part (6,8,15,16), comprise the urceolus (6) of fixedlying connected with following screw (13), the inner core (15) of fixedlying connected with last screw (14), can generate mechanism (16) with respect to the lifting axis (8) and the pitching movement of supporting part (5) lifting, wherein, inner core (15) is enclosed within the urceolus (6), and both do not contact mutually;

The locking control section comprises first latch switch (7) and second latch switch (2), and first latch switch (7) is used for the described urceolus of locking (6), and second latch switch (2) is used for the described supporting part of locking (4,5,11);

Wherein, by controlling opening or the output of locking realization control gear rotation, elevating movement or pitching movement of first latch switch (7) and second latch switch (2).

2, the Three Degree Of Freedom control gear of display device as claimed in claim 1, wherein, described screw (13) down can be that independent screw parts are fixed on the urceolus (6) by certain Placement, also can be the thread section that directly processes on the inwall of urceolus (6); Described upward screw (14) can be that independent screw parts are fixed on the inner core (15) by certain Placement, also can be the thread section that directly processes on the inwall of inner core (15).

3, the Three Degree Of Freedom control gear of display device as claimed in claim 1, wherein, described supporting part (1,3,4,5,9,11) also comprises downforce bearing (3) and upward pressure bearing (9), rolling disc (4) places on the base (1) by downforce bearing (3), can rotate relative to base (1); Support arm (5) is fixed on the rolling disc (4); Lifting axis (8) bottom places the endoporus of support arm (5), can move up and down with respect to support arm (5); The fixedly connected platform in lifting axis (8) top (11); Platform (11) is supported on the urceolus (6) by upward pressure bearing (9).

4, the Three Degree Of Freedom control gear of display device as claimed in claim 3, wherein, have the hole that cooperates with the peripheral shape of inner core (15) in the platform (11), inner core (15) top can lifting in the hole of platform (11), but can not rotate with respect to platform (11).

5, as the Three Degree Of Freedom control gear of each described display device among the claim 1-4, wherein, described conversion of motion part also comprises platform transverse axis (10), described platform transverse axis (10) is supported on the platform (11) in rotating mode, and described pitching movement generates mechanism (16) and connects platform transverse axis (10) and inner core (15).

6, as the Three Degree Of Freedom control gear of each described display device among the claim 1-4, wherein, it is linkage mechanism or pinion and rack that described pitching movement generates mechanism (16).

7, as the Three Degree Of Freedom control gear of each described display device among the claim 1-4, wherein, urceolus (6) in described first latch switch (7) the locking controlled motion transform portion, the rolling disc (4) in described second latch switch (2) the locking supporting part.

8, as the Three Degree Of Freedom control gear of each described display device among the claim 1-4, wherein, described first latch switch (7) and second latch switch (2) are the electromagnet of repacking, mounting spring on its iron core, during energising, electromagnet overcomes spring force iron core is sucked back; The iron core locking of under the effect of spring force, rebounding during outage.

9, as the Three Degree Of Freedom control gear of each described display device among the claim 1-4, wherein, when (7) locking of first latch switch and second latch switch (2) release, output is rotated; When first latch switch (7) and second latch switch (2) all during locking, the output elevating movement; When (7) release of first latch switch and second latch switch (2) locking, the output pitching movement.