CN2038693U

CN2038693U - Up-down device for tv set

Info

Publication number: CN2038693U
Application number: CN 88219425
Authority: CN
Inventors: 宋选青
Original assignee: Individual
Current assignee: Individual
Priority date: 1988-11-21
Filing date: 1988-11-21
Publication date: 1989-05-31

Abstract

The utility model discloses a table type fully sealed up-down device for a TV set, being matched with the closed circuit TV set of the educational center of the TV set. A container storing the TV set is designed to a pentagonal shape sealed by a thin steel plate and provided with an opening on the upper part of the shape, and the pentagonal shape is supported by four floor supporting legs. The TV set is placed on a TV set supporting plate and is up-down following a lifting part fixedly connected with the supporting plate into integration. When the TV set supporting plate is dropped to a lower limit position, the TV set can be completely contained and stored in the container of the TV set. The TV set supporting plate and an up-down screw are connected into the integration through a combined structure capable of preventing being oppositely rotated as well as not being two disengaging bodies. The device can automatically lock on any position in the up-down range.

Description

Up-down device for TV set

The application relates to the indoor auxiliary facility field that a kind of this device of desk-top television lifting device that has the storage and the two kinds of functions of moving concurrently belongs to the video education center, also is applicable to the video tape recorder of audio-visual centre and the valuable and easily robbed or burgled utensils such as microcomputer of other occasion.

The closed-circuit television unit of all size is the indispensable equipment in the audio-visual education programme.In order to guarantee image and acoustic mass, assurance safety, television set should have suitable laying method.One of existing laying method is the lifting of outstanding top, when the television set bottommost being received that the people stands with the screw mandrel transmission hand touch less than height, time spent startup power supply puts down television set to suitable height.Two of method is that television set and wire rope gearing thereof are all hidden in the ceiling.Three of method is to fix a sealing box on the wall, and last class hour is with the door-lock opening of box.These three kinds with the non-method of laying of landing of television set, can play the certain protection effect, satisfies the teaching and scientific research requirement, but limits because of its device itself, and protective effect has certain limit.May stand in as the people on the thing such as stool, also can climb on the ceiling, also can touch television set with the way of destroying door lock.In addition, from vision, attractive in appearance and maintenance angle, they respectively have deficiency.As the lifting of outstanding top, the television set bottom is in 80 centimeters under the ceiling.Six of television sets are exposed, not attractive in appearance and the sense of kind desiring to fall is arranged, and must be installed in and give under the steel plate that buries roof.Long and the fragile steel wire rope of the built-in drive path of ceiling, maintenance must be carried out in narrow space, and the ceiling mounting layer of certain altitude also must be arranged in the room, and ceiling must drive out the hole into, has too to plant the sense of desiring to fall.More than two kinds of installations all need give fixed position in advance, move do not have may, the important roof end face that composing environment is attractive in appearance has infringement.On the wall laying method of fixing sealing box except make the people feel crumbling, the outer container enormous size, inharmonious with indoor clean and tidy facility.Under particular case, the method for existing placement television set can not play the safeguard protection effect.

The application's purpose provides a kind of new desk-top television lifting device that has the storage and the two kinds of functions of moving concurrently.It not only can play the better protect effect, and it is attractive in appearance to also have maintenance easily to stablize, and the installation site is not subjected to give in advance that to decide institute's limit, roof and metope clean and tidy, the advantage of coordinating with inside plant.Particularly it relies on the totally-enclosed design of the container of self-locking of screw mandrel transmission and storage television set, has guaranteed built-in height of devices safety.

The application finishes as follows.The container that is used for preserving television set is designed to five by sheet metal sealing, the shape of upper opening only, lands supporting leg by four and supports, and television set is placed on the television set supporting plate, with the rising part lifting that is connected to one with supporting plate.Television set is taken in the container of storage television set fully, and meanwhile, the upper shed that the top cover that connects as one by guide pillar with the television set supporting plate will be preserved the container of television set covers.

The utility model is described in further detail below in conjunction with accompanying drawing.

Accompanying drawing 1 is the structural representation of television lifting device;

Accompanying drawing 2 is guide pillar and guide groove fit structure schematic diagram;

Accompanying drawing 3 is the cap structure schematic diagram;

Accompanying drawing 4 is the power transmission arrangment schematic diagram.

Accompanying drawing 5 is a kind of syndeton schematic diagram of television set supporting plate and screw mandrel.

See accompanying drawing 1, the rising part that internal fixation television set comprises that casing top cover (1), four pillar (2), television set supporting plate (3), translation screw mandrels (4) that support with guide effects of holding concurrently form.Four guide pillars (2) are connected to one with top cover (1), television set supporting plate (3).The planar central of television set supporting plate (3) has one to prevent that parts (as square groove, key pin) are connected with screw mandrel in relative rotation, does not rotate to reach screw mandrel, can only translation promotes the purpose of rising part.Supporting plate (3) becomes fixedly connected with screw mandrel (4) by securing member (as screw, clamp), so that rising part is when being subjected to starting power, this power can be delivered on the supporting leg by screw mandrel.Drawer-like is just put by being by standing part system, and five by the sheet metal sealing, and only four of the container of upper opening (5), double as guide groove are landed supporting leg compositions such as (6).The supporting leg (6) that will land is designed to the double as guide groove, can save special guide groove.Running part is made up of motor (7), worm screw (8), worm gear (nut that double as and screw mandrel match, bearing shaft) (9), screw mandrel conduit (10), slide block (11) etc.Through overregulating worm gear transmission ratio, designing through suitable screw mandrel helical pitch, realize suitable screw mandrel translation raising speed, running part is controlled landing by supervisory control desk, and is spacing by travel switch.At the highest design attitude, can make guide pillar (2) be arranged cooperating of certain-length with guide groove (6), guarantee the firm of rising part.Lower limit makes container cap (1) hermetically the container upper shed be covered just, finishes the sealing of whole six faces.The helical pitch of screw mandrel (4) is designed in the self-locking requirement scope, and screw mandrel (4) is fixedlyed connected the self-locking of realization rising part by securing member (as screw, clamp) and supporting plate (3) in addition.Motor (7), worm screw (8) are arranged with the bottom that worm gear parts such as (9) are close to the container of preserving television set.Both made the installing and locating of moving component simple, reduced table surface height again to greatest extent, passed through other well-designed (seeing accompanying drawing 4 explanations of power transmission arrangment signal) again, and made the height of totally-enclosed television lifting device concordant substantially with the teacher dais.The surface of closed container (5) can be adopted and be sprayed paint or method such as stamped recess, does ornamental processing.Television lifting device after ornamental processing resembles the facility of a fineness, and is harmonious with the solemn clean and tidy atmosphere in classroom.In order to lower eccentric stand under load moment of flexure value, support force--screw mandrel is lifted one's head a little--and be arranged near the centre, plane of supporting plate (3) television set supporting plate (3).

See accompanying drawing 2, television set supporting plate (3) and guide pillar (2) be by securing member (as screw, rivet) or connector (as clamp, pin), or be welded to connect and be one.Do not break away from guide groove (6) during for the lifting of assurance guide pillar (2), the size of syndeton must be limited in the certain angle scope (in 35 °).The part of guide groove at television set container place has one can allow the long groove mouth that syndeton moves freely, so that television set supporting plate (3) can move freely by the television set container.The internal diameter of the external diameter of guide pillar (2) and guide groove (6) has certain form accuracy and dimensional accuracy movingly in the fit dimension scope, to reduce the frictional resistance that guide pillar (2) and guide groove (6) produce in fit dimension scope internal cause slide relative.

See accompanying drawing 3, fixing four guide pillars (2) on the appropriate location of top cover (1), the requirement movingly between 4 guide pillars (2) and 4 guide grooves (6) is satisfied in this position.The fixedly system of top cover (1) and guide pillar (2) adopts the structure (being connected as welding, pin) that both are broken away from, and when top cover (1) is subjected to masterpiece time spent of making progress, such connection can make this active force that makes progress transmit to the floor through guide pillar parts such as (2).Relation between the size of the container (5) of the size of top cover (1) and storage television set is that the former can block the latter.

See accompanying drawing 4.On the power transmission, employing be the worm and gear structure, worm screw (8) links to each other with motor (7) with shaft coupling, two ends are established radial bearing and are located and bear engaging force.Worm gear (9) is actually a sub-assembly, and it is except that playing the worm gear effect.The nut and the bearing shaft that match of double as and screw mandrel (4) also.The slide block (11) that its bore design can be permitted screw mandrel (4) bottom again is sliding on the ground to greatest extent.With the length of reduction screw mandrel (4) and the height of whole television lifting device.Motor (7), worm screw (8) are arranged with the bottom that worm gear parts such as (9) are close to the container of preserving television set.Add the bore design effect of the sub-assembly of above worm gear (9), can make the height of television lifting device concordant substantially with the teacher dais.The radial load (worm and gear is engaging force radially) that the sub-assembly of worm gear (9) is suffered, by holding (as 36210 to trying hard to recommend mechanical axis, 46210) bear, this holds also satisfied simultaneously requirement of bearing axial force (gravity of television set and rising part, worm gear, worm shaft are to engaging force) to trying hard to recommend mechanical axis.Axial force is by bearing to the axle mechanical axis down downwards, upwards axial force is born by last radial thrust bearing, and the power transmission route when whole television lifting device is worked is: the nut on the sub-assembly of total force → screw mandrel that television set and rising part cause (4) → worm gear (9) → following radial thrust bearing → step → support → supporting leg (6) → ground; Power transmission route during self-locking is: the nut on the sub-assembly of flip power → screw mandrel (4) → worm gear (9) → last radial thrust bearing → top chock → support → supporting leg (6) → ground.Power transmission route during by self-locking can be found out must satisfy being connected between top cover (1) and guide pillar (2), guide pillar (2) and television set supporting plate (3), television set supporting plate (3) and screw mandrel (4) and still is the requirement of one after stressed; Also can see screw mandrel this moment (4) can not relatively rotate with nut on the sub-assembly of worm gear (9).The helical pitch that is screw mandrel (4) must be controlled in the condition of self-locking scope.In a broad sense, self-locking not only refer to top cover (1) with the storage television set container (5) card on the time situation, it refers to that also rising part can firmly rest on the arbitrary position in its heave amplitude scope, and clearly, this television lifting device satisfies two kinds of self-locking requirement.Screw mandrel conduit (10) bottom lock, the inside lubricating oil of full screw mandrel duct height about half of packing into, when screw mandrel (4) when being raised to certain position, lubricating oil is taken up by screw mandrel (4), lubricated feed screw nut's transmission.

See accompanying drawing 5, be television set supporting plate (3) and a kind of structural representation that is connected of screw mandrel (4).This syndeton plays and prevents that television set supporting plate (3) and screw mandrel (4) from relatively rotating and the effect of relative disengaging.

Claims

1, a kind of desk-type totally-closed television lifting device, form by rising part, standing part and running part, it is characterized in that rising part by top cover, guide pillar, supporting plate and screw mandrel constitute standing part by the storage television set container, guide groove formations such as (supporting legs); Running part is made of motor, worm screw, worm gear, screw mandrel conduit, slide block etc.

2, a kind of television lifting device by claim 1 regulation is characterized in that top cover is fixedlyed connected with guide pillar to be integral.

3, a kind of television lifting device by claim 1 regulation is characterized in that four guide groove double as supporting legs.

4, a kind of television lifting device by claim 1 regulation is characterized in that screw mandrel and supporting plate are by preventing that parts (as square groove, key pin) are connected in relative rotation.

5, a kind of television lifting device by claim 4 regulation is characterized in that being with fastening connection piece (as clamp, screw) on the syndeton of screw mandrel and supporting plate.

6, a kind of television lifting device by claim 4 regulation is characterized in that screw mandrel is located near the centre, plane of supporting plate.

7, a kind of television lifting device by claim 1 regulation is characterized in that parts such as motor, worm screw, worm gear are close to the bottom layout of the window of preserve television set.