CN2036284U - Plane rotary woved foldable mechanism for projector - Google Patents

Abstract

The utility model discloses the folding mechanism of a teaching projector. The folding mechanism of a teaching projector is characterized in that the folding mechanism of a teaching projector is provided with a plane rotary mechanism and a moving stand rotary folding locking mechanism. As a head frame can rotate on planes and an object lens faces to a container when folding, the object lens is not easy to damage; the moving stand rotary folding locking mechanism can realize convenient rotary fold for the stand and can lock tightly when positioning. The utility model has the advantages of high precision, convenient transportation, and convenient operation; images are not easy to quiver. Thus, the teaching projector is easy to design out a beautiful appearance, and also raises overall engine performance; the utility model can be widely used for the improved aspects of the folding mechanisms of various teaching projectors.

Description

Plane rotary woved foldable mechanism for projector

The utility model relates to a kind of teaching projector fold mechanism, and it has headstock plane rotating mechanism and mobile stand rotary folding latch mechanism.The present existing teaching projector headstock normally is fastened on the casing with screw by column, and its packaging volume is big, transports and lay inconvenience, therefore projector headstock fold mechanism has appearred, but existing projector headstock fold mechanism, and the headstock can not rotate on the plane, after the headstock was folding, the object lens face is casing dorsad, puts inconvenience, damage easily, column can not move, poor rigidity, and image is shaken easily, reseting precision is poor, and machine molding is difficult to design attractive in appearancely.

The purpose of this utility model is to provide a kind of teaching projector plane to rotate removable folding latch mechanism, make overhead projector lens towards casing, not fragile, the removable folding locking of column, the bearing accuracy height, image is difficult for shake, and moulding is specious, both instant packed transportation does not influence use again.

The purpose of this utility model can reach by following measure, referring to accompanying drawing 1, the projector headstock is installed on the plane rotating mechanism 1, and the projector column is installed in the mobile stand rotary folding latch mechanism 2.Make the projector headstock can the plane rotation, after folding, object lens are towards casing, and column is removable folding during packing, the column reseting precision height that is locked when recovering to use, image is difficult for shake.

The purpose of this utility model also can be described in further detail as follows in conjunction with the accompanying drawings, is the structure principle chart of headstock plane rotating mechanism referring to accompanying drawing 2, and headstock plane rotating mechanism is by supporting plate 1, runing rest 2, runing rest gib screw 3, the headstock 4, spring 5 compositions such as grade.

Concrete annexation for supporting plate 1 by the support arm trip bolt (because of not being headstock plane rotating part, do not mark on the figure), be fastened on the garden tubulose support arm 6, runing rest 2 is fastened on the supporting plate 1 by runing rest gib screw 3, realize accurately location by the concave station that has on the boss that has on the supporting plate 1 and the runing rest 2, the headstock 4 is normal tightening state by headstock gib screw (not marking because of it does not belong on the plane rotating mechanism figure) and runing rest.When the needs rotation headstock, unscrew runing rest gib screw 3 earlier, this moment, spring 5 held up runing rest 2, boss and the concave station on the runing rest 2 on the supporting plate 1 are broken away from, in the horizontal direction with the headstock 4 together with runing rest 2 Rotate 180s °, tighten runing rest gib screw 3 again, utilize plane and convex-concave platform on supporting plate 1 and the runing rest 2 to realize location and locking.

Below in conjunction with accompanying drawing 3, accompanying drawing 4 illustrates the structure of the folding latch mechanism of mobile stand, and the folding and latch mechanism of mobile stand is by bent angle frame 16, bearing pin 5, latch segment 8, and lock-screw 6, opening ring washer 15 is formed.Bent angle frame 16 is fixed on the side corner sections of cabinet, bent angle frame bottom is processed with the hole that penetrates bearing pin 5, bearing pin 5 penetrates in the bent angle frame, can move, bearing pin 5 is fixed on the column by opening ring washer 15, therefore make the column can be with respect to bent angle frame and cabinet, move in or out, can be rotated around bearing pin 5 after column shifts out and realize folding, when column moves inward, rely on the bent angle frame accurately to locate, latch segment 8 is housed in column, be processed with the hole, garden on the latch segment 8,, prevent that latch segment from coming off so that allow bearing pin 5 pass, be processed with screw thread on the latch segment 8, the hole that lock-screw 6 passes bent angle frame 16 and column is screwed in the latch segment screw thread, and tightening lock-screw 6, can to realize making column be adjacent to the bent angle frame along the column diagonal fastened, makes column be close to cabinet right angle groove face and tighten, realize the accurate location of column on two mutually vertical coordinate directions, be difficult for shake, the also not outstanding cabinet of column is outside a lot, specious.

The utility model has following advantage compared to existing technology:

1, folding easily, packed and transported is convenient.

Object lens are towards cabinet when 2, folding, and are not fragile.

Can be when 3, column resets along the column diagonal, be close to cabinet rectangular coordinates face and be locked and be difficult for shake, reseting precision height.

4, do not give prominence to after column resets outside cabinet, do not influence the attractive in appearance of projector appearance moulding.

Use teaching projector of the present utility model because above advantage makes, the headstock folds science, and packed and transported is convenient not fragile, the reseting precision height, and technical feature strengthens greatly, has made many bench teats at present and has tested model machine, and the test back is respond well.

Claims (3)

1, a kind of teaching projector fold mechanism is primarily characterized in that to have headstock plane rotating mechanism and mobile stand rotary folding latch mechanism composition.

2, according to the said teaching projector of claim 1 fold mechanism, be primarily characterized in that said headstock plane rotating mechanism is by the headstock, supporting plate, runing rest, runing rest gib screw, spring 5 is formed, the headstock is fixed on the runing rest, and runing rest and supporting plate be by the runing rest gib screw, (and spring 5 is equipped with in inside), tighten stationary positioned (supporting plate is fixed on the support arm), or realize the plane rotation when unscrewing.

3,, be primarily characterized in that said mobile stand folds latch mechanism and is made up of bent angle frame, bearing pin, latch segment, lock-screw according to the said teaching projector of claim 1 fold mechanism.The bent angle frame is fixed on the cabinet side corner sections, column is fixed on the bearing pin, and bearing pin penetrates in the bent angle frame can mobile rotary folding, and latch segment is housed in the column, the hole that lock-screw passes bent angle frame column is screwed in the interior latch segment screw thread of column, can realize locking and accurate the location by column.

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