CN101373312A

CN101373312A - Projector with feet-adjusting structure

Info

Publication number: CN101373312A
Application number: CNA200710141777XA
Authority: CN
Inventors: 张嘉麟; 何文中
Original assignee: Qisda Corp
Current assignee: Qisda Corp
Priority date: 2007-08-21
Filing date: 2007-08-21
Publication date: 2009-02-25
Anticipated expiration: 2027-08-21
Also published as: CN101373312B

Abstract

The invention respectively carries out fine adjustment of heights on two sides through arranging an adjusting foot structure at the front end (a projection lens end) of the bottom part of a projector. A first frame body of the adjusting foot structure is pivoted with the bottom part of the projector through a rotating shaft, and a second frame body abuts against one surface through two foot parts. A first joint part and a second joint part at the two ends of the first frame body, as well as a third joint part and a fourth joint part at the two ends of the second frame body, are respectively jointed together through an adjusting ring. When the two adjusting rings are adjusted respectively, the two ends of the first frame can be respectively close to or far away from the two ends of the second frame, thereby facilitating the fine adjustment of the heights at the two ends of the adjusting foot structure, and achieving the purpose of fine height adjustment of the projector.

Description

Has the projector that adjusts leg structure

Technical field

The present invention relates to a kind of adjustment leg structure and projector, relate in particular to a kind of the rotation and adjust ring to adjust the projector's adjustment leg structure and the relevant projector of height.

Background technology

At present as the picture system of projector and so on normally be installed on the ceiling with the level of approximation projection way with image projection on projection screen, perhaps storing is on the table with elevation angle projection way projects images.In order to satisfy the portable requirement of this type of brief report system, movie system, except generally be used for large conference room can be fixedly mounted on projector on the ceiling, the aforementioned second way of the many employings of general projector, soon projector is seated on the plane and (normally is lower than on the desktop of projection screen), and, picture is projeced on metope or the projection screen by adjusting the built-in keystone distortion parameter of height and adjustment projector of projector's bottom adjustment pin.

Known projector adjusts pin and mainly contains two kinds of forms, one is for adjusting the tooth bar that setting has the fixed teeth distance on the pin, when desiring to adjust the adjustment of pin height, share the clamping device of tooth bar by Pressing fastener, make the state that the pin disengaging engages with clamping device of adjusting, then adjust pin and to desired height, clamping device engage with tooth bar, so that fix the adjustment pin on a required height.Second kind of known projector adjusts pin and then uses screw device to carry out the adjustment of height, makes two ends two projectors adjust the pin member in the mode of rotating screw bolt and possesses quite high adjustment precision.Have in addition at aforementioned two kinds of known projectors and adjust the combined type adjustment pin mechanism that pin is improved, on original screw rod, fasten by a bolt lock mechanism and screw rod.When bolt lock mechanism was removed fastening to screw rod, screw rod can carry out significantly moving, and was under the state of fastening when bolt lock mechanism and screw rod, and rotatable screw rod is to carry out fine setting highly.

Yet for adjust the picture system that it puts height such as the need of projector's one class, known projector adjusts the front bottom end that foot device is arranged on projector usually, each independent component of one about being, and in order to reach the highly purpose of fine setting, known projector adjusts pin mechanism all needs to possess comparatively complicated gear, tooth bar and relevant actuating mechanism usually, and the manufacturing cost of product also relatively promotes thereupon.

Summary of the invention

The invention provides a kind of projector, it includes a body and and adjusts leg structure.This adjustment leg structure is arranged on the body, and it includes one first support body, one second support body and two is adjusted ring.First support body is articulated on the body, and first support body has one first junction surface and one second junction surface.Second support body is relative with first support body, and second support body comprises one the 3rd junction surface, and it is relative with first junction surface; One the 4th junction surface, it is relative with second junction surface; And a foot, be arranged between the 3rd junction surface and the 4th junction surface, adjust leg structure by foot's support body against a surface.Adjust ring and connect first junction surface and the 3rd junction surface and second junction surface and the 4th junction surface respectively, adjust to encircle and be used for making second support body optionally close or away from first support body.

Description of drawings

Fig. 1 has the synoptic diagram that projector adjusts the projector of leg structure for the present invention;

Fig. 2 is that the adjustment leg structure of Fig. 1 is combined in the synoptic diagram in the projector;

Fig. 3 adjusts the synoptic diagram of first embodiment of leg structure for projector of the present invention;

Fig. 4 is first support body, second support body and adjusts the synoptic diagram that loops closes;

Fig. 5 adjusts the synoptic diagram of leg structure second embodiment for projector of the present invention;

Fig. 6 rotates to carry out the schematic side view of projector's height coarse adjustment along rotating shaft for adjusting leg structure.

Embodiment

With reference to figure 1, Fig. 1 has the synoptic diagram that projector of the present invention adjusts the projector 10 of leg structure.Projector 10 is image projection systems, can be used to play film, sound attitude bulletin data etc., by being arranged on the projection camera lens 16 in body 12 the place aheads, will (be generally on the projection screen) on image projection to a plane.Usually projector 10 is erected at (on desktop) on the plane that is lower than projection screen, has two runners 18 in 14 rear ends, bottom of

projector

10, and 14 the place aheads, bottom then are provided with disclosed adjustment leg structure.Adjust leg structure and include one first support body 20 and one second support body 30.First support body 20 is installed on the bottom 14 of projector 10 by rotating shaft 40, and pivot bottom 14 relatively by rotating shaft 40, make the adjustment leg structure optionally be arranged at fully the position of opening (as Fig. 1), folding (as Fig. 2) or half-open closing (as the description of Fig. 6 state I I) fully, and when adjusting leg structure when rotating shaft 40 is switched to the position that folds fully, then smooth as shown in Figure 2 on bottom 14.

With reference to figure 3, Fig. 3 is the synoptic diagram of disclosed adjustment leg structure first embodiment.Fig. 4 then is the diagrammatic cross-section at circle A place among Fig. 3.First support body, 20 two ends of adjusting leg structure have one first junction surface 22, one second junction surface (not shown), second support body, 30 two ends have one the 3rd junction surface 32 and one the 4th junction surface (not shown), wherein second junction surface is identical with first junction surface 22, the 4th junction surface is identical with the 3rd junction surface 32, herein only with first junction surface 22 and 32 explanations of the 3rd junction surface.First junction surface 22 is screw rods in the present embodiment.Adjust leg structure and also include two adjustment rings 50 (being hollow screw knob in the present embodiment) with internal thread, be used for connecting first junction surface 22 and the 3rd junction surface 32 and second junction surface and the 4th junction surface respectively, encircle 50 distances that can adjust between first junction surface 22 and the 3rd junction surface 32 by adjusting, and then reach the purpose of adjusting projector's 10 delivery altitudes.

When projector's adjustment pin is arranged at the position of opening fully as shown in Figure 1, two foots 34 of second support body 30 can be against the surperficial (not shown) as desktop, play the body 12 of projector 10 with support, the left side of projection camera lens 16 1 ends of projector 10 is R for L, right side height highly at this moment.Simultaneously with reference to figure 4.Adjusting ring 50 is installed on the 3rd junction surface 32 in mode that can relative the 3rd junction surface 32 axial rotation, the internal thread of adjusting ring 50 inside simultaneously then cooperates with the screw-rod structure at first junction surface 22, to connect first junction surface 22 and the 3rd junction surface 32, and adjusting ring 50 also can relative first junction surface 22 axial rotation, therefore when rotating when adjusting ring 50, adjust ring 50 (together with the 3rd junction surfaces 32 that it connected) and just can drive first junction surface 22 according to the difference of rotation direction and change into or produce to adjust and encircle 50 along the N direction.When first junction surface 22 when the N direction changes that into adjustment encircles 50, the distance at first junction surface 22 and the 3rd junction surface 32 is furthered, then the left side height L of projector 10 (or right side height R is by the distance decision between second junction surface and the 4th junction surface) is then turned down.Otherwise when first junction surface 22 is produced when adjusting ring 50 along the N direction, the distance at first junction surface 22 and the 3rd junction surface 32 is zoomed out, and then the left side height L of projector 10 (or right side height R is by the distance decision between second junction surface and the 4th junction surface) then is raised.Because two to adjust ring 50 is to rotate adjustment independently, so the height L of projector about 10 and R also can separately adjust, thereby reach the purpose of slant correction.In addition, because two adjustment rings, 50 and first junction surface 22 is to adjust distance in the mode that screw rod cooperates, therefore when adjusting ring 50 rotations one circle, adjust the spacing that leg structure height is on one side then heightened (or a turning down) screw thread, therefore can reach the purpose of highly finely tuning.

In first embodiment, first junction surface 22 is that screw rod and adjustment ring 50 are installed on the 3rd junction surface 32, in other embodiments of the invention, also screw rod can be arranged on the 3rd junction surface 32 and will adjust ring 50 and be installed on first junction surface 22, its attainable effect is identical with first embodiment, does not repeat them here.

In first embodiment of Fig. 3, two foots, 34 surfaces of second support body 30 are respectively arranged with anti-skidding embossing 60, when foot 34 against on the table the time, anti-skidding embossing 60 can provide the enough friction force of desktop, prevents to adjust leg structure and slides on the table.With reference to figure 5, in the second embodiment of the invention, adjust leg structure and then comprise first support body 120, second support body 130, two adjustment rings 150, wherein the principle of the combination of first support body 120, second support body 130 and two adjustment rings 150 and adjustment is identical with first embodiment, does not repeat them here.Different with first embodiment is, then be provided with two Shock absorbing cushions 160 in two foots 134 of second support body 130 respectively in addition, it is made of rubber-like rubber, also can be against on the table the time in foot 134, provide the enough friction force of desktop and the function of shock-absorbing.

With reference to figure 6.Fig. 6 rotates to carry out the schematic side view of projector's height coarse adjustment along rotating shaft for adjusting leg structure.Disclosed adjustment leg structure also can utilize in the coarse adjustment of carrying out projector's height in the process of rotating shaft rotation.As shown in Figure 6, adjust leg structure and lay respectively at fully the position that folds (position I), half-open closing (position II) and open (position III) fully, when adjusting leg structure and open the θ angle to the fully open position of position III, can be with projector's height coarse adjustment to H.Open θ ' angle when position II half-open closes the position when adjusting leg structure, can be with projector's height coarse adjustment to H '.Then carry out the fine setting of left and right sides height respectively by adjusting ring again, so that meet the purpose of projector's height control.

The present invention carries out the fine setting of both sides height respectively by the adjustment leg structure is set in projector's bottom front (projecting mirror head end).First support body of adjusting leg structure is articulated on the projector bottom by rotating shaft, and second support body then is resisted against on the surface by two foots.Engagement of loops is adjusted together by one respectively in the 3rd junction surface at first junction surface at the first support body two ends, second junction surface and the second support body two ends, the 4th junction surface.When adjusting two respectively when adjusting ring, first junction surface (or second junction surface) can near or away from the 3rd junction surface (or the 4th junction surface), adjusting the height fine setting at leg structure two ends, thereby reach the purpose that projector highly finely tunes.

The above only is the preferred embodiments of the present invention, and all equivalent variations and modifications of being made according to claim scope of the present invention all should belong to protection scope of the present invention.

Claims

1. projector, it comprises:

One body; And

One adjusts leg structure, is arranged on the described body, and described adjustment leg structure comprises:

One first support body is articulated on the described body, and described first support body has one first junction surface and one second junction surface;

One second support body, it is relative with described first support body, and described second support body comprises:

One the 3rd junction surface, it is relative with described first junction surface;

One the 4th junction surface, it is relative with described second junction surface; And

One foot is arranged between described the 3rd junction surface and described the 4th junction surface, described adjustment leg structure by the described foot described body of support against a surface; And

Two adjust ring, connect described first junction surface and described the 3rd junction surface and described second junction surface and described the 4th junction surface respectively, adjust to encircle to be used for making described second support body optionally close or away from described first support body.

2. projector as claimed in claim 1, wherein said first support body also comprises a rotating shaft, and first support body is installed on the body in the mode that body relatively pivots by this rotating shaft.

3. projector as claimed in claim 1, first junction surface and second junction surface of wherein said first support body are screw rods, adjusting ring is the screw rod knob, respectively with can relative the 3rd junction surface, the mode of the 4th junction surface and screw axial rotation is installed on the 3rd junction surface and on the 4th junction surface, when the rotation of the relative screw axial of screw rod knob, an end of relative first support body of an end of second support body near or away from.

4. projector as claimed in claim 1, the 3rd junction surface and the 4th junction surface of wherein said second support body are screw rods, adjusting ring is the screw rod knob, respectively with can relative first junction surface, the mode of second junction surface and screw axial rotation is installed on first junction surface and on second junction surface, when the rotation of the relative screw axial of screw rod knob, an end of relative second support body of an end of first support body near or away from.

5. projector as claimed in claim 1, wherein said foot surface has anti-skidding embossing.

6. projector as claimed in claim 1 wherein also comprises a Shock absorbing cushion that is linked in the foot.