FR2607219A1 - Modular support making it possible to adjust a slide projector in three directions - Google Patents
Modular support making it possible to adjust a slide projector in three directions Download PDFInfo
- Publication number
- FR2607219A1 FR2607219A1 FR8607687A FR8607687A FR2607219A1 FR 2607219 A1 FR2607219 A1 FR 2607219A1 FR 8607687 A FR8607687 A FR 8607687A FR 8607687 A FR8607687 A FR 8607687A FR 2607219 A1 FR2607219 A1 FR 2607219A1
- Authority
- FR
- France
- Prior art keywords
- modular support
- nut
- screw
- fulcrum
- frame
- 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.)
- Granted
Links
Classifications
-
- 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
-
- 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
- F16M11/06—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting
- F16M11/12—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting in more than one direction
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Projection Apparatus (AREA)
Abstract
Description
SUPPORT MODULAIRE
PERMETTANT LE REGLAGE EN TROIS DIRECTIONS
D'UN APPAREIL DE PROJECTION DE DIAPOSITIVES.MODULAR SUPPORT
ALLOWING THREE-WAY ADJUSTMENT
OF A SLIDE PROJECTION APPARATUS.
L'invention concerne un support modulaire permettant le réglage selon trois directions d'un appareil de projection de diapositives. The invention relates to a modular support allowing the adjustment in three directions of a slide projection apparatus.
Lorsque l'on veut localiser sur un écran plusieurs images projetées à partir d'une pluralité de projecteurs, un des premiers problèmes qui se pose, est la localisation exacte de chacune des images projetées qui ne peut être assurée que si chaque projecteur est lui-même doté de moyens de réglage. When one wants to locate on a screen several images projected from a plurality of projectors, one of the first problems which arises is the exact location of each of the projected images which can only be ensured if each projector is itself even provided with adjustment means.
Il existe dans l'art connu des supports d'appareils de projection comportant un plateau sur lequel repose ce dernier. L'appareil lui-même est en général doté de moyens rudimentaires qui permettent le déplacement de l'image en hauteur et le réglage de l'horizontalité mais le déplacement latéral ne s'obtient qu'en déplaçant, par rapport à l'écran, l'ensemble de l'appareil ou du support. On comprend très bien que, dans ces conditions, il s'avère extrêmement difficile de faire coopérer entre eux plusieurs appareils de projection de manière simple et avec précision. De plus, les appareils reposant simplement sur des surfaces planes plus ou moins horizontales, un léger choc sur le support peut déplacer inopinément les images projetées. In the known art, there are supports for projection devices comprising a plate on which the latter rests. The device itself is generally provided with rudimentary means which allow the displacement of the image in height and the adjustment of the horizontality but the lateral displacement is obtained only by moving, relative to the screen, the entire device or support. It is very well understood that, under these conditions, it proves to be extremely difficult to make several projection devices cooperate with one another in a simple and precise manner. In addition, as the devices rest simply on more or less horizontal flat surfaces, a slight impact on the support may unexpectedly move the projected images.
La présente invention a pour but de pallier ces inconvénients et concerne un support modulaire capable donc d'être associé à une pluralité d'autres supports, chacun de ces supports comportant des moyens de réglage dans les trois directions verticale, latérale, horizontale. The present invention aims to overcome these drawbacks and relates to a modular support capable therefore of being associated with a plurality of other supports, each of these supports comprising means for adjusting in the three directions vertical, lateral, horizontal.
L'invention concerne plus précisément un support modulaire (1) permettant le réglage selon trois directions d'un appareil de projection (40) de diapositives, caractérisé en ce qu'il est constitué d'un châssis (20) monté sur au moins trois pieds (2,3,4) disposés de telle sorte que plusieurs châssis peuvent être superposés pour former des colonnes, ce châssis (20) comportant la combinaison de trois moyens (100,101,102) de réglage assurant respectivement l'horizontalité, le déplacement latéral et vertical de l'image projetée. The invention relates more precisely to a modular support (1) allowing the adjustment in three directions of a slide projection apparatus (40), characterized in that it consists of a frame (20) mounted on at least three feet (2,3,4) arranged so that several frames can be superimposed to form columns, this frame (20) comprising the combination of three means (100,101,102) of adjustment ensuring respectively the horizontality, the lateral and vertical displacement of the projected image.
L'invention sera mieux comprise à l'aide des explications qui vont suivre et des figures jointes parmi lesquelles:
- la figure 1 illustre schématiquement un support modulaire équipé de l'ensemble de ses moyens de réglage conforme à l'invention,
- la figure 2 est une vue selon (F1) de la figure 1,
- la figure 3 est une vue selon (F2) de la figure 1,
- la figure 4 est une vue en plan du dispositif,
- la figure 5 est une vue selon une section (A-A) de la figure 4,
- la figure 6 est une vue selon une section (B-B) de la figure 4.The invention will be better understood with the aid of the explanations which follow and of the appended figures among which:
FIG. 1 schematically illustrates a modular support equipped with all of its adjustment means according to the invention,
FIG. 2 is a view along (F1) of FIG. 1,
FIG. 3 is a view along (F2) of FIG. 1,
FIG. 4 is a plan view of the device,
FIG. 5 is a view along a section (AA) of FIG. 4,
- Figure 6 is a view along a section (BB) of Figure 4.
Pour plus de clarté, les mêmes éléments portent les mêmes références sur toutes les figures. For clarity, the same elements are given the same references in all the figures.
Comme le montrent les figures 1, 2, 3 et 4, un support (1) conforme à l'invention est constitué d'un châssis (20) porté par au moins trois pieds (2,3,4) rendus solidaires du châssis (20) par tout moyen connu tel qu'un boulonnage (500). La configuration du cadre constituant le châssis (20) est notamment illustrée au moyen de la figure 4 qui est une vue en plan du dispositif. Conformément à l'invention, des moyens d'adaptation et de réglage sont rendus solidaires de ce châssis (20) et ont pour fonction de supporter un appareil de projection (40) de diapositives qui met notamment en oeuvre des magasins circulaires disposés sur la partie supérieure de l'appareil et tournant autour d'un axe vertical. As shown in FIGS. 1, 2, 3 and 4, a support (1) according to the invention consists of a chassis (20) carried by at least three feet (2,3,4) made integral with the chassis ( 20) by any known means such as bolting (500). The configuration of the frame constituting the chassis (20) is illustrated in particular by means of FIG. 4 which is a plan view of the device. In accordance with the invention, adaptation and adjustment means are made integral with this frame (20) and have the function of supporting a slide projection apparatus (40) which in particular implements circular magazines arranged on the part top of the device and rotating around a vertical axis.
Selon une caractéristique importante de l'invention, l'appareil de projection (40) repose sur trois points d'appui (5,6,7) rendus solidaires du châssis (20) comme cela sera expliqué plus loin. Les points d'appui (5,6) s'engagent dans des parties femelles (50,51) prévues d'origine ou créées pour cette application dans l'embase (70) de l'appareil (40) vers l'avant de ce dernier. Le point d'appui (7), quant à lui, est lisse et est agencé de telle sorte qu'il puisse glisser sans difficulté sur la partie arrière de l'embase (70). Une combinaison de moyens d'adaptation agissant sur ces trois points (5,6,7) permet, selon l'invention, trois sortes de réglage.Il s'agit:
- de moyens de réglage (100) liés au point d'appui (5) destinés
à assurer l'horizontalité de l'image projetée;
- de moyens de réglage (101) liés au point d'appui (6), destinés
à assurer un déplacement latéral de l'image;
- de moyens de réglage (102) liés au point d'appui (7) assurant
le pivotement de l'appareil autour d'une ligne passant par
les points (5,6), mouvement qui 5e traduit par un déplacement
vertical de l'image projetée.According to an important characteristic of the invention, the projection device (40) rests on three support points (5,6,7) made integral with the chassis (20) as will be explained below. The support points (5,6) engage in female parts (50,51) originally intended or created for this application in the base (70) of the device (40) towards the front of this last. The fulcrum (7), meanwhile, is smooth and is arranged so that it can slide without difficulty on the rear part of the base (70). A combination of adaptation means acting on these three points (5,6,7) allows, according to the invention, three kinds of adjustment. These are:
- adjustment means (100) linked to the fulcrum (5) intended
ensure the horizontality of the projected image;
- adjustment means (101) linked to the fulcrum (6), intended
ensuring lateral displacement of the image;
- adjustment means (102) linked to the fulcrum (7) ensuring
the pivoting of the device around a line passing through
the points (5,6), movement which 5th translated by a displacement
vertical of the projected image.
La description et le fonctionnement de ces différents moyens (100,101,102) sont maintenant développés. Les moyens de réglage (100) de l'horizontalité de l'image projetée sont constitués d'une vis (55) introduite dans un filetage (56) traversant le châssis (20) et se terminant par un point d'appui (5). Celui-ci est destiné à pénétrer, comme cela a été dit précédemment, dans un organe femelle (50) préalablement prévu dans l'embase (70) (côté avant) de l'appareil de projection (40). A cette vis (55) est associé un bouton moleté (12). En tournant ce bouton, on visse ou on dévisse la vis (55) de telle sorte que le déplacement du point d'appui (5) fasse pivoter l'appareil de projection (4) autour d'une ligne passant par les points (6) et (7), ce qui permet de régler ainsi l'horizontalité de l'image. Ce mouvement est symbolisé par une flèche double (fo). The description and operation of these different means (100,101,102) are now developed. The means for adjusting (100) the horizontality of the projected image consist of a screw (55) inserted in a thread (56) passing through the frame (20) and ending with a fulcrum (5) . This is intended to penetrate, as has been said previously, into a female member (50) previously provided in the base (70) (front side) of the projection apparatus (40). With this screw (55) is associated a knurled button (12). By turning this button, we screw or unscrew the screw (55) so that the movement of the fulcrum (5) rotates the projection device (4) around a line passing through the points (6 ) and (7), which allows you to adjust the horizontality of the image. This movement is symbolized by a double arrow (fo).
Les moyens de réglage (101) sont constitués d'une vis (13) coopérant avec un écrou (8) et commandé par un bouton moleté (9). L'écrou (8) porte le point d'appui (6) dont l'extrémité est préalablement introduite dans un logement femelle (51) prévu dans l'embase (70) de l'appareil de projection, vers l'avant de ce dernier. La vis (13) est portée par deux paliers (60,61) prévus dans le châssis (20). Si l'on agit sur le bouton moleté (9), elle peut tourner sur elle-même mais ne subit aucun déplacement longitudinal, car elle est en effet bloquée par un écrou avec contre-écrou (90). En revanche, l'écrou (8) se déplace entrainant le point d'appui (6) et par voie de conséquence l'embase (70) de l'appareil de projection (40). The adjustment means (101) consist of a screw (13) cooperating with a nut (8) and controlled by a knurled button (9). The nut (8) carries the fulcrum (6) the end of which is previously introduced into a female housing (51) provided in the base (70) of the projection apparatus, towards the front of this latest. The screw (13) is carried by two bearings (60,61) provided in the chassis (20). If one acts on the knurled button (9), it can turn on itself but does not undergo any longitudinal displacement, because it is indeed blocked by a nut with lock nut (90). On the other hand, the nut (8) moves, causing the fulcrum (6) and consequently the base (70) of the projection apparatus (40).
Les figures 5 et 6 qui sont des vues selon une section (A-A) et une section (B-B) de la figure 4 illustrent plus clairement les particularités du guidage de l'écrou (8). En effet, la rotation de la vis (13) entraine un déplacement longitudinal de l'écrou (8) à condition que celui-ci soit immobilisé en rotation. Pour cela, il est doté d'un méplat vertical (35) situé à une distance (d) d'une partie fixe du châssis (20). Cette distance (d) est de l'ordre de quelques dixièmes de millimètre. Elle est calculée pour être juste suffisante pour permettre la très faible rotation de l'écrou (8) nécessaire pour compenser la petite variation de distance entre les points (5) et (6) lors du déplacement longitudinal de l'écrou (8). Afin de maintenir le point (6) vertical lors de la mise en place de l'appareil de projection (40), et afin de faciliter cette mise en place, une barre ressort (18) fixée au châssis (20) par un rivet (19) s'applique sur un méplat horizontal (36) de l'écrou (8). Figures 5 and 6 which are views along a section (A-A) and a section (B-B) of Figure 4 illustrate more clearly the features of the guidance of the nut (8). Indeed, the rotation of the screw (13) causes a longitudinal displacement of the nut (8) provided that the latter is immobilized in rotation. For this, it is provided with a vertical flat (35) located at a distance (d) from a fixed part of the chassis (20). This distance (d) is of the order of a few tenths of a millimeter. It is calculated to be just sufficient to allow the very small rotation of the nut (8) necessary to compensate for the small variation in distance between the points (5) and (6) during the longitudinal displacement of the nut (8). In order to keep the point (6) vertical during the positioning of the projection apparatus (40), and in order to facilitate this positioning, a spring bar (18) fixed to the frame (20) by a rivet ( 19) is applied to a horizontal flat (36) of the nut (8).
Grâce à cette combinaison, en tournant dans un sens ou dans l'autre le bouton moleté (9) solidaire de la vis (13), l'appareil (40) pivote autour du point d'appui (5), et sa partie arrière glisse en appui sur le point d'appui (7). Il s'ensuit un déplacement latéral (flèche fl) de l'image projetée. Thanks to this combination, by turning in one direction or the other the knurled button (9) integral with the screw (13), the device (40) pivots around the fulcrum (5), and its rear part slides on the support point (7). It follows a lateral displacement (arrow fl) of the projected image.
Les moyens de réglage (102) sont constitués par une vis (14) solidaire d'un bouton de commande moleté (11). L'extrémité de cette vis (14) est en butée verticale sur une patte (150) appartenant au châssis (20). Elle est vissée dans le filetage (140) du levier (10). La rotation de la vis (14) entraine dans un sens ou dans l'autre (flèche f2) le levier (10) qui porte le point d'appui (7) et qui est articulé autour d'un axe d'articulation (80) porté par deux paliers (15,16) solidaires du châssis (20). En agissant donc sur le bouton moleté (11), on fait varier dans un sens ou dans l'autre (flèche f2) l'inclinaison du levier par rapport à un plan horizontal. Le point d'appui (7) sur lequel repose la partie arrière de l'embase (70) de l'appareil de projection (40) monte ou descend, entrainant ce dernier dans son mouvement.L'appareil (40) pivote donc autour d'une ligne passant par les points (5) et (6), ce qui se traduit par un déplacement vertical de l'image projetée. The adjustment means (102) consist of a screw (14) integral with a knurled control button (11). The end of this screw (14) is in vertical abutment on a lug (150) belonging to the chassis (20). It is screwed into the thread (140) of the lever (10). The rotation of the screw (14) drives in one direction or the other (arrow f2) the lever (10) which carries the fulcrum (7) and which is articulated around an axis of articulation (80 ) carried by two bearings (15,16) integral with the chassis (20). By therefore acting on the knurled button (11), the inclination of the lever relative to a horizontal plane is varied in one direction or the other (arrow f2). The fulcrum (7) on which the rear part of the base (70) of the projection device (40) rests rises or falls, causing the latter to move. The device (40) therefore pivots around a line passing through the points (5) and (6), which results in a vertical displacement of the projected image.
On obtient donc grâce à l'invention trois réglages dans trois directions de l'image projetée (horizontale, latérale, verticale). Or, selon une autre caractéristique de l'invention, les supports (1) conformes à l'invention sont montés sur trois pieds (2,3,4) verticaux de différentes hauteurs et pouvant s'encastrer les uns dans les autres. Dans ces conditions, il est possible de composer des colonnes comportant une pluralité de châssis superposés. De même, ces colonnes peuvent être à leur tour associées latéralement les unes aux autres, ce qui conduit à l'obtention d'un ensemble comportant autant d'appareils de projection disposés selon toutes les configurations qu'exige l'application considérée, chaque appareil de projection disposant de ses propres moyens de réglage. The invention therefore provides three adjustments in three directions of the projected image (horizontal, lateral, vertical). However, according to another characteristic of the invention, the supports (1) according to the invention are mounted on three vertical feet (2,3,4) of different heights and being able to fit into one another. Under these conditions, it is possible to compose columns comprising a plurality of superimposed frames. Likewise, these columns can in turn be associated laterally with one another, which leads to the production of an assembly comprising as many projection devices arranged in all the configurations required by the application considered, each device projection with its own adjustment means.
Ces applications sont nombreuses dans tous les domaines où des combinaisons d'images projetées interviennent. These applications are numerous in all areas where combinations of projected images occur.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8607687A FR2607219B1 (en) | 1986-05-27 | 1986-05-27 | MODULAR SUPPORT FOR THREE-WAY ADJUSTMENT OF A SLIDE PROJECTION APPARATUS |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8607687A FR2607219B1 (en) | 1986-05-27 | 1986-05-27 | MODULAR SUPPORT FOR THREE-WAY ADJUSTMENT OF A SLIDE PROJECTION APPARATUS |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2607219A1 true FR2607219A1 (en) | 1988-05-27 |
| FR2607219B1 FR2607219B1 (en) | 1989-01-20 |
Family
ID=9335757
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8607687A Expired FR2607219B1 (en) | 1986-05-27 | 1986-05-27 | MODULAR SUPPORT FOR THREE-WAY ADJUSTMENT OF A SLIDE PROJECTION APPARATUS |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2607219B1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5715138A (en) * | 1995-10-19 | 1998-02-03 | Daewoo Electronics Co., Ltd. | Apparatus for providing a display with tilting and rotating movements with rack, pinion, and bevel gears |
| US5715137A (en) * | 1995-10-19 | 1998-02-03 | Daewoo Electronics Co., Ltd. | Apparatus for providing tilting and rotational movements with pinion gears and rack |
| WO2014026391A1 (en) * | 2012-08-16 | 2014-02-20 | Wu Huai | Adjusting seat frame of projector |
| CN103791211A (en) * | 2014-02-11 | 2014-05-14 | 河海大学常州校区 | Movable supporting frame |
| CN104235572A (en) * | 2014-09-05 | 2014-12-24 | 中影巴可(北京)电子有限公司 | Three-point type supporting regulating mechanism for digital movie projector |
| CN108167606A (en) * | 2018-02-13 | 2018-06-15 | 福清展旭电子有限公司 | The projector bolster and its application method of high loadability |
| CN111367137A (en) * | 2020-05-06 | 2020-07-03 | 杭州庚复科技有限公司 | Projector fixing device based on special-shaped gear transmission principle |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111649218A (en) * | 2020-07-07 | 2020-09-11 | 河南工学院 | An English learning device equipped with left and right projectable devices |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB172213A (en) * | 1920-11-25 | 1921-12-08 | E R Watts & Son Ltd | Improvements in or relating to adjusting devices for scientific instruments |
| US2211825A (en) * | 1937-04-29 | 1940-08-20 | Int Projector Corp | Adjustable supporting means |
| DE1911775A1 (en) * | 1969-03-07 | 1970-10-29 | Heye Friedrich W | Optical device for combining several separately adjustable projection images into a combination image |
| US4148453A (en) * | 1977-12-08 | 1979-04-10 | Brantly Robert T | Projector stacking stand |
| BE889316A (en) * | 1981-06-19 | 1981-10-16 | Audio Visual Belgium S A | SUPPORT FOR MULTIPLE PROJECTORS, ESPECIALLY SLIDE PROJECTORS FOR MULTIPLE SIMULTANEOUS PROJECTIONS |
| EP0051574A1 (en) * | 1980-10-31 | 1982-05-12 | Telefonaktiebolaget L M Ericsson | Arrangement for adjustably mounting an optical direction indicator |
| US4526337A (en) * | 1982-12-29 | 1985-07-02 | General Audio-Visual Inc. | Projector stacking stand |
-
1986
- 1986-05-27 FR FR8607687A patent/FR2607219B1/en not_active Expired
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB172213A (en) * | 1920-11-25 | 1921-12-08 | E R Watts & Son Ltd | Improvements in or relating to adjusting devices for scientific instruments |
| US2211825A (en) * | 1937-04-29 | 1940-08-20 | Int Projector Corp | Adjustable supporting means |
| DE1911775A1 (en) * | 1969-03-07 | 1970-10-29 | Heye Friedrich W | Optical device for combining several separately adjustable projection images into a combination image |
| US4148453A (en) * | 1977-12-08 | 1979-04-10 | Brantly Robert T | Projector stacking stand |
| EP0051574A1 (en) * | 1980-10-31 | 1982-05-12 | Telefonaktiebolaget L M Ericsson | Arrangement for adjustably mounting an optical direction indicator |
| BE889316A (en) * | 1981-06-19 | 1981-10-16 | Audio Visual Belgium S A | SUPPORT FOR MULTIPLE PROJECTORS, ESPECIALLY SLIDE PROJECTORS FOR MULTIPLE SIMULTANEOUS PROJECTIONS |
| US4526337A (en) * | 1982-12-29 | 1985-07-02 | General Audio-Visual Inc. | Projector stacking stand |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5715138A (en) * | 1995-10-19 | 1998-02-03 | Daewoo Electronics Co., Ltd. | Apparatus for providing a display with tilting and rotating movements with rack, pinion, and bevel gears |
| US5715137A (en) * | 1995-10-19 | 1998-02-03 | Daewoo Electronics Co., Ltd. | Apparatus for providing tilting and rotational movements with pinion gears and rack |
| WO2014026391A1 (en) * | 2012-08-16 | 2014-02-20 | Wu Huai | Adjusting seat frame of projector |
| CN103791211A (en) * | 2014-02-11 | 2014-05-14 | 河海大学常州校区 | Movable supporting frame |
| CN104235572A (en) * | 2014-09-05 | 2014-12-24 | 中影巴可(北京)电子有限公司 | Three-point type supporting regulating mechanism for digital movie projector |
| CN104235572B (en) * | 2014-09-05 | 2016-03-23 | 中影巴可(北京)电子有限公司 | A kind of bikini support adjustment mechanism for d-cinema projectors |
| CN108167606A (en) * | 2018-02-13 | 2018-06-15 | 福清展旭电子有限公司 | The projector bolster and its application method of high loadability |
| CN108167606B (en) * | 2018-02-13 | 2024-01-19 | 福清展旭电子有限公司 | Projector carrier with high load capacity and method of use thereof |
| CN111367137A (en) * | 2020-05-06 | 2020-07-03 | 杭州庚复科技有限公司 | Projector fixing device based on special-shaped gear transmission principle |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2607219B1 (en) | 1989-01-20 |
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