CN101726976B - Projecting device - Google Patents

Abstract

The invention provides a projection device, which includes a first body, a second body, a rotating shaft, an optical machine, a printed circuit board and a flexible circuit board. The first body and the second body are movably connected through a rotating shaft, the optical machine is accommodated in the first body, the printed circuit board is accommodated in the second body, the optical machine and the printed circuit board are electrically connected through a flexible circuit board, and the rotating shaft includes Two first sleeve shafts fixed on the first body, second sleeve shafts fixed on the second body, limit teeth, springs and positioning teeth; one end of the second sleeve shaft is provided with a protrusion, and the other There is a protrusion in one end; a guide groove is provided on the limit tooth along the axial direction of the rotating shaft; the limit tooth and the spring are arranged at the end where the protrusion is located in the second sleeve shaft, and the guide groove and the protrusion of the limit tooth The positioning teeth are fixed in one of the first set of shafts; the limit teeth are engaged with the positioning teeth, and the protrusion of the second set of shafts is rotatably sleeved in the other first set of shafts .

Description

projection device

technical field

The invention relates to a projection device.

Background technique

The projector is widely used in the occasions of video playback, photo playback and presentation data playback, especially the projector can project and enlarge the display screen to a large-size display screen that cannot be achieved by existing TVs or monitors, making the projector suitable for A place with a large space and a large number of people.

Existing projector structures use large high-voltage halogen bulbs or high-pressure gas discharge bulbs as projection light source components, which must be coordinated with large high-voltage lamp circuits and heat dissipation systems, thus making the internal components of the projector complex and costly. In addition to being inconvenient to carry around and use, it is also not easy to install and use at any time, and it becomes a fixed indoor device.

However, the entire structure of the existing hand-held projection device is fixedly connected; when the projection direction needs to be changed, the user must change the hand-holding position, but the slight shaking of the user will cause the projection picture to be unstable and affect the projection effect.

Contents of the invention

In view of this, it is necessary to provide a projection device capable of changing the projection direction.

A projection device comprising a first body, a second body, a rotating shaft, an optical machine, a printed circuit board and a flexible circuit board; the first body and the second body move through the rotating shaft connected, the optical machine is accommodated in the first body, the printed circuit board is accommodated in the second body, the optical machine and the printed circuit board are electrically connected through the flexible circuit board, the The rotating shaft includes two first sleeve shafts fixed on the first body, a second sleeve shaft fixed on the second body, a limit tooth, a spring and a positioning tooth; One end of the second sleeve shaft is provided with a protrusion, and the other end is provided with a protrusion; a guide groove is provided on the limit tooth along the axial direction of the rotating shaft; the limit tooth and the spring are arranged on the second sleeve shaft One end where the inner protrusion is located, and the guide groove of the positioning tooth is engaged with the protrusion, and the positioning tooth is fixed in one of the first sleeve shafts; the positioning tooth and the positioning tooth are in phase Together, the protruding part of the second sleeve shaft is rotatably sleeved in the other first sleeve shaft.

Compared with the prior art, the present invention sets a rotating shaft between the first body and the second body, and the user can change the projection of the projection device by adjusting the relative angle between the first body and the second body. direction.

Description of drawings

FIG. 1 is an exploded schematic diagram of a projection device provided by an embodiment of the present invention.

FIG. 2 is an exploded schematic diagram of a first body of the projection device in FIG. 1 .

FIG. 3 is another perspective exploded view of the first body of the projection device in FIG. 1 .

FIG. 4 is an exploded schematic diagram of a second body of the projection device in FIG. 1 .

FIG. 5 is another perspective exploded view of the second body of the projection device in FIG. 1 .

FIG. 6 is an exploded schematic view of the rotating shaft of the projection device in FIG. 1 .

FIG. 7 is an exploded schematic diagram of a second set of shafts of the projection device in FIG. 1 .

FIG. 8 is a cross-sectional view of the rotating shaft of the projection device in FIG. 1 in a fixed state.

FIG. 9 is a cross-sectional view of the rotating shaft of the projection device in FIG. 1 in a rotating state.

FIG. 10 is a schematic diagram of the electrical connection between the first body and the second body of the projection device in FIG. 1 .

FIG. 11 is a combined schematic diagram of the projection device in FIG. 1 .

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings.

As shown in FIG. 1 , the projection device 100 provided by the embodiment of the present invention includes a first body 10 , a second body 20 , a rotating shaft 30 , an optical engine 40 , a printed circuit board 50 and a flexible circuit board 60 . The first body 10 and the second body 20 are movably connected through the rotating shaft 30, the optical machine 40 is housed in the first body 10, the printed circuit board 50 is housed in the second body 20, the optical machine 40 is electrically connected to the printed circuit board 50 through the flexible circuit board 60 .

As shown in FIGS. 2 and 3 , the first body 10 includes a first upper cover 11 and a first lower cover 12 , and the first upper cover 11 and the first lower cover 12 form an accommodating space 13 . The accommodating space 13 accommodates the optical machine 40 therein. The first upper cover 11 includes a first bottom plate 111 , two first side walls 112 formed on two sides of the first bottom plate 111 , and a first rear cover 113 fixed on one end of the two first side walls 112 . A plurality of first connecting posts 114 are arranged on the first bottom plate 111 close to the first side wall 112, and the first connecting posts 114 are used to connect and fix with the first lower cover 12; A first lens accommodating area 115 is also provided on the first bottom plate 111 of the upper cover 11, and the first lens accommodating area 115 is formed on the first bottom plate 111 away from the extending direction of the first side wall 112. An arched groove, the first lens accommodating area 115 covers the upper surface of the optical machine 40 . Two fixing blocks 1151 are fixed in the first lens accommodating area 115 for keeping the optical engine 40 fixed.

The first lower cover 12 includes a first bearing plate 121, two first lower side covers 122 formed on both sides of the first bearing plate 121, and second first lower covers 122 respectively fixed on two ends of the two first lower side covers 122. First lower front cover 123 and first lower rear cover 124 . At least one second connecting column 126 is disposed on the first supporting board 121 adjacent to the first lower side cover 122 , and the second connecting column 126 is used for fixing the optical engine 40 in the first lower cover 12 . A lens hole 1231 is provided on the first lower front cover 123 , and light from the light engine 40 is projected out from the lens hole 1231 . A first connecting hole 125 corresponding to the first connecting post 114 on the first upper cover 11 is defined on the first supporting board 121 . The first upper cover 11 and the first lower cover 12 are connected and fixed to the first connecting hole 125 through the first connecting column 114 disposed opposite to each other. One of the first side walls 112 of the first upper cover 11 and one of the first lower side covers 122 of the first lower cover 12 are provided with corresponding openings 1121, 1221, two openings 1121, 1221 Combined into a focusing hole 14. A focus rod 15 is movably arranged in the focus hole 14 for focusing the optical machine 40 accommodated in the first body 10 .

As shown in Figure 4 and Figure 5, the second body 20 includes a second upper cover 21, a second lower cover 22 and a battery cover 23; the second upper cover 21 and the battery cover 23 are engaged respectively It is arranged on both sides of the second lower cover 22 . The second upper cover 21 includes a second bottom plate 211, two second side walls 212 formed on both sides of the second bottom plate 211, and a second rear cover 213 fixed at one end of the two second side walls 212, At least one card slot 2121 is provided on the second side wall 212 at one end of the second bottom plate 211, and a plurality of third slots 2121 are provided on the other end of the second bottom plate The connecting column 2111 , the card slot 2121 and the third connecting column 2111 are used for connecting and fixing with the second lower cover 22 . At least one connection hole 214 is disposed on the second side wall 212 , and the connection hole 214 is used for electrically connecting the flexible circuit board 60 to external devices.

The second lower cover 22 includes a second carrier plate 221, two second lower side covers 222 formed on both sides of the second carrier plate 221, and two second lower side covers 222 respectively fixed on the two second lower side covers 222. The second lower front cover 223 and the second lower rear cover 224 at the end. A battery slot 225 is recessed on the second carrier plate 221 along the side where the second lower side cover 222 is located. The hooks 2221 corresponding to the slots 2121 are provided with a plurality of second connecting holes 2211 corresponding to the third connecting posts 2111 on the second upper cover 21 on the second carrying plate 221 . The second upper cover 21 and the second lower cover 22 are connected and fixed through the corresponding slots 2121 and hooks 2221 and the third connecting posts 2111 and the second connecting holes 2211 . At least one fixing post 2212 is provided on the side facing the second lower side cover 222 on the second carrier board 221 , and the printed circuit board 50 is provided with a fixed post 2212 corresponding to the second carrier board 221 . Corresponding to the fixing holes 51 , the printed circuit board 50 is fixed on the second carrier board 221 through the corresponding fixing posts 2212 and the fixing holes 51 . A boss 226, a notch 227 and a battery slot 228 are provided on the edge of the second carrier plate 221 away from the side where the second lower side cover 222 is located, and the boss 226 is close to the notch 227 The second lower front cover 223 is disposed, and the battery card slot 228 is disposed close to the second lower rear cover 224 . The boss 226 and the battery slot 228 are used to engage with the battery cover 23 so that the battery cover 23 is more stably fixed on the second lower cover 22 . The notch 227 is used to facilitate the user to take out the battery 70 for powering the projection device 100 from the battery slot 225 .

The battery cover 23 includes two opposite sides 231, a first top side 232 connecting the two side sides 231, a first bottom side 233 opposite to the first top side 232 and an inner surface facing the battery slot 225 234. A plurality of fixing hooks 235 are respectively fixed on the two side edges 231 and the first top edge 232 of the inner surface 234, and a groove 236 is arranged on the inner surface 234 close to the first bottom edge 233. The fixing hook 235 and the groove 236 cooperate with the battery slot 228 and the protrusion 226 on the second carrier board 221 respectively, so that the battery cover 23 is tightly engaged with the second lower cover 22 .

As shown in Figure 3, the optical machine 40 includes a lens 41 and an optical engine 42, the optical engine 42 includes a light inlet 421 and a light outlet 422, the lens 41 and the light inlet 421 are The same direction is perpendicular to both ends of the light emitting portion 422 , and a focusing bump 423 is provided on the lens 41 for focusing the lens 41 . The optical engine 40 is provided with a plurality of third connecting holes 424 corresponding to the second connecting columns 126 of the first lower cover 12 for fixing the optical engine 40 in the first lower cover 21 .

As shown in FIGS. 6 to 9 , the rotating shaft 30 includes two first sleeve shafts 31 fixed on the first body 10 and a second sleeve shaft fixed on the second body 20 32. The rotating shaft 30 further includes a limiting tooth 33 , a spring 34 and a positioning tooth 35 . The two first sleeve shafts 31 are fixed on the first bearing plate 121 of the first body 10 at one end close to the first lower rear cover 124 ; the second sleeve shaft 32 is fixed on the second body 20 An end of the second carrying plate 221 close to the second lower rear cover 224 is located. A protruding portion 321 is defined at one end of the second shaft 32 . The two first sleeve shafts 31 respectively include a corresponding first shaft hole 311 . The second shaft 32 includes a second shaft hole 322 extending through the second shaft 32 in the axial direction, and the other end of the second shaft hole 322 opposite to the protrusion 321 is a third shaft hole. 325, and the diameter of the third shaft hole 325 is larger than the diameter of the second shaft hole 322, and a protrusion 323 is also provided in the third shaft hole 325. The stop tooth 33 is a ring body, and one end of the stop tooth 33 is provided with a stop tooth body 331 with equal spacing, and a guide groove is provided on the side of the stop tooth 33 along the axial direction of the rotating shaft 30 332. The spring 34 is located in the third shaft hole 325 in the second sleeve shaft 32 , and one end of the spring 34 abuts against the step formed by the second shaft hole 322 and the third shaft hole 325 . The limiting tooth 33 is movably located in the third shaft hole 325 , and the limiting tooth body 331 of the limiting tooth 33 is away from the spring 34 . The guide groove 332 engages with the protrusion 323 in the third shaft hole 325 . The positioning tooth 35 is a ring body, and one end of the positioning tooth 35 is provided with a positioning tooth body 351 with equal spacing. Inside the first shaft hole 311 , and the positioning tooth body 351 faces the limiting tooth 33 . During the assembly process of the first sleeve shaft 31 and the second sleeve shaft 32, the spring 34 and the stop tooth 33 are sequentially assembled into the third shaft hole 325, and the guide on the stop tooth 33 The groove 332 engages with the protrusion 323 in the second sleeve shaft 32 , and then the positioning tooth 35 is assembled into the first shaft hole 311 of the first sleeve shaft 31 close to the limit tooth 33 . Then the second sleeve shaft 32 is sleeved between the two first sleeve shafts 31 so that the positioning teeth 33 and the positioning teeth 35 in the first sleeve shaft 31 are meshed so that the protrusion of the second sleeve shaft 32 The portion 321 is sheathed in another first sleeve shaft 31 .

When the user rotates the first body 10, the positioning tooth body 351 of the positioning tooth 35 presses the limiting tooth body 331 of the limiting tooth 33, because the guide groove 332 of the limiting tooth 33 and the protrusion in the second sleeve shaft 32 323 is engaged, the limiting tooth 33 will not rotate relative to the second sleeve shaft 32 , but the limiting tooth 33 can move along the axial direction of the second sleeve shaft 32 . When the pressure of the user acting on the stop tooth 33 through the positioning tooth 35 is greater than the elastic force of the spring 34 on the stop tooth 33, the stop tooth 33 moves along the direction of the spring 34, the spring 34 is compressed, and the stop tooth 33 and the positioning tooth 35 are separated, and the limiting tooth body 331 is opposed to the tooth top of the positioning tooth body 351; when the user continues to rotate, when the tooth limiting tooth body 331 and the tooth top of the positioning tooth body 351 are about to be separated, the positioning tooth 35 is opposite to the tooth top. The active force of the positioning tooth 33 disappears, and under the action of the restoring force of the spring 34, the positioning tooth 33 moves toward the positioning tooth 35, and the positioning tooth body 351 of the positioning tooth 35 and the positioning tooth body of the positioning tooth 33 331 engages again to limit the movement of the positioning teeth 35, so that the first body 10 is kept at the angle required by the user. The positioning tooth 33 and the positioning tooth 35 are engaged to separated and then engaged, so that the positioning tooth 35 can rotate relative to the positioning tooth 33 by a distance of one tooth thickness. In this embodiment, the force acting on the positioning tooth 35 by the self-weight of the first body 10 cannot separate the positioning tooth 33 from the protrusion 323 in the second sleeve shaft 32, and then the positioning tooth 33 cannot be separated from the protrusion 323 in the second sleeve shaft 32. , the angle between the first body 10 and the second body 20 does not change. During use, the user can also apply force to the second body 20 to realize the rotation of the limiting tooth 33 relative to the positioning tooth 35 . Through the interaction between the stop teeth 33, the spring 34, the positioning teeth 35 and the protrusion 323 in the rotating shaft 30, the user can not only easily change the angle between the first body 10 and the second body 20, but also The first body 10 and the second body 20 can be kept at a fixed angle.

As shown in Figure 1, Figure 10 and Figure 11, a first electrical connection hole 312 is opened between the first sleeve shaft 31 and the first lower cover 12, and the second sleeve shaft 32 is connected to the first lower cover 12. A second electrical connection hole 324 is defined between the two lower covers 22 . The flexible circuit board 60 passes through the second electrical connection hole 324 to the first sleeve shaft 31 through the through hole of the second sleeve shaft 32 , and then passes through the first electrical connection hole 312 to the first lower cover 12 . One end of the flexible circuit board 60 is electrically connected to the printed circuit board 50 fixed on the second lower cover 22 , and the other end is electrically connected to the optical engine 40 accommodated in the first lower cover 12 . By arranging the flexible circuit board 60 in the first sleeve shaft 31 and the second sleeve shaft 32, it not only improves the convenience of angle adjustment between the first body 10 and the second body 20, but also effectively prevents the first body 10 from The flexible circuit board 60 has poor electrical conductivity due to long-term bending of the second body 20 .

During the assembly process, the printed circuit board 50 is fixed on the side of the second lower cover 22 facing away from the battery slot 225, and then the flexible circuit board 60 is sleeved in the second rotating shaft 32, and the flexible circuit board 60 One end passes through the second electrical connection hole 324 and is connected to the printed circuit board 50 . Then the second upper cover 21 is fixed to the second lower cover 22 along the side where the printed circuit board 50 is located, so that the battery cover 23 is engaged with the second lower cover 22 along the side where the battery slot 225 is located. The first sleeve shaft 31 fixed on the first lower cover 12 is sheathed on both ends of the second sleeve shaft 32 to form a rotating shaft 30 , and the other end of the flexible circuit board 60 passes through the first electrical connection hole 312 , and then fix the optical engine 40 in the first lower cover 12, and electrically connect the optical engine 40 to the first electrical connection hole 312, and then snap the first upper cover 11 along the side where the optical engine 40 is located. Set on the first lower cover 12 .

In the present invention, a rotating shaft is arranged between the first body and the second body, and the user can change the projection direction of the projection device by adjusting the relative angle between the first body and the second body.

It can be understood that, for those skilled in the art, various other corresponding changes and deformations can be made according to the technical concept of the present invention, and all these changes and deformations should belong to the protection scope of the claims of the present invention .

Claims (10)

1. projection arrangement, it comprises one first body, one second body, one rotating shaft, one ray machine, one printed circuit board (PCB) and a flexible PCB, it is characterized in that: described first body and described second body flexibly connect by described rotating shaft, described ray machine is placed in first body, described printed circuit board (PCB) is placed in second body, described ray machine electrically connects by described flexible PCB mutually with described printed circuit board (PCB), and described rotating shaft comprises that one is installed in two first sleeves on described first body, one is installed in second sleeve on described second body, one limiting tooth, one spring and a positioning tooth; One end of described second sleeve is provided with a protuberance, is provided with a projection in the other end; The gathering sill that is axially arranged with in the upper edge rotating shaft of described limiting tooth; Described limiting tooth and spring are arranged at an end at the second sleeve internal projection place, and the gathering sill of limiting tooth and described projection fasten, and described positioning tooth is fixedly arranged on wherein in one first sleeve; Described limiting tooth is mutually meshing with described positioning tooth, and the protuberance of described second sleeve is rotating to be sheathed in another first sleeve.

2. projection arrangement as claimed in claim 1 is characterized in that: described first body comprises one first loam cake and one first lower cover, and described first loam cake and first lower cover form an accommodation space, and described accommodation space is contained in described ray machine wherein.

3. projection arrangement as claimed in claim 2 is characterized in that: two the first side walls and that described first loam cake comprises one first base plate, be formed on the first base plate both sides are fixedly arranged on first bonnet of two the first side wall one ends; On described first base plate, be provided with a plurality of first joint pins, be used for being connected to a fixed with first lower cover near described the first side wall place; Also be provided with one first camera lens disposal area on described first base plate, the described first camera lens disposal area is one to be coated on the arcuate recess of described ray machine upper surface.

4. projection arrangement as claimed in claim 3 is characterized in that: first time protecgulum and first time bonnet that described first lower cover comprises first loading plate, is formed on two first time side covers of the first loading plate both sides and is fixedly arranged on described two first time side cover two ends respectively; On described first time protecgulum, be provided with a camera aperture, be used for the ray cast of ray machine is gone out; Be provided with corresponding first connecting hole of a plurality of and described first joint pin on described first loading plate, described first loam cake and first lower cover are connected to a fixed by first joint pin and first connecting hole that is oppositely arranged.

5. projection arrangement as claimed in claim 1 is characterized in that: described second body comprises one second loam cake, one second lower cover and a battery cover; Described second loam cake and described battery cover are arranged in the second lower cover both sides respectively.

6. projection arrangement as claimed in claim 5, it is characterized in that: two second sidewalls and that described second loam cake comprises one second base plate, be formed on the second base plate both sides are fixedly arranged on second bonnet of two second sidewall one ends, be respectively equipped with at least one draw-in groove at described two second sidewalls, be provided with a plurality of the 3rd joint pins near described second side-walls on described second base plate, described draw-in groove and described the 3rd joint pin are used for being connected to a fixed with second lower cover.

7. projection arrangement as claimed in claim 6, it is characterized in that: described second lower cover comprises one second loading plate, be formed on two second time side covers of the second loading plate both sides and be fixedly arranged on second time protecgulum and second time bonnet at described two second time side cover two ends respectively, side at second time side cover place, the described second loading plate upper edge is recessed to form a battery case, described second downside cover be provided with at least one and second on the corresponding grab of draw-in groove that covers, be provided with on described second loading plate a plurality of with second on corresponding second connecting hole of the 3rd joint pin that covers, described second loam cake and second lower cover are connected to a fixed by corresponding draw-in groove and grab and the 3rd joint pin and second connecting hole.

8. projection arrangement as claimed in claim 7 is characterized in that: the side towards second time side cover on described second loading plate is provided with at least one fixed leg, described printed circuit board (PCB) be provided with second loading plate on the corresponding fixed orifice of fixed leg.

9. projection arrangement as claimed in claim 8, it is characterized in that: the battery case edge that deviates from a side of described second time side cover on described second loading plate is provided with a boss, a kerf and a battery draw-in groove, and described boss and otch are near described second time protecgulum setting, described battery draw-in groove is near described second time bonnet setting, on described battery cover, be provided with fixedly a grab and a groove, described boss and battery draw-in groove respectively with groove and fixedly grab match, battery cover is engaged closely with loam cake; Described otch is used to make things convenient for the user to take out battery in battery case.

10. projection arrangement as claimed in claim 1 is characterized in that: offer first Electrical Connector Hole between described first sleeve and described first body, offer second Electrical Connector Hole between described second sleeve and described second body; One end of described flexible PCB passes second Electrical Connector Hole and is connected with printed circuit board (PCB), and the other end passes first Electrical Connector Hole and is connected with ray machine.

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