CN218675652U - Turnover mechanism and projection equipment - Google Patents

Abstract

The embodiment of the application provides tilting mechanism and projection equipment, relates to electronic equipment technical field. The turnover mechanism can drive parts such as a cover body arranged on the turnover mechanism to turn over. This tilting mechanism includes: the electronic device comprises a base body, a support piece and a driving piece, wherein the base body is used for being fixed on the electronic device; the supporting piece comprises a transmission section and a supporting section, and the supporting section is connected with a cover body of the electronic equipment; the driving piece is used for driving the transmission section to do circular motion so that the supporting section drives the cover body to turn over and the opening in the electronic equipment is opened or closed. The turnover mechanism is used for enabling the cover body of the electronic equipment to be turned over.

Description

Turnover mechanism and projection equipment

Technical Field

The embodiment of the application relates to the technical field of electronic equipment, in particular to a turnover mechanism and projection equipment.

Background

In a projection apparatus, a laser projection television plays a very important role in the projector market, and a laser light outlet is provided in a housing of the laser projection television so that an outgoing light beam from a lens is projected onto a projection screen.

At present, a laser projection television is generally not provided with a protection structure at a laser light outlet, so that the laser light outlet is in an open state for a long time, and the overall aesthetic property of the appearance of the laser projection television is poor. Although some laser projection televisions are provided with a sliding cover structure at the laser light outlet, on one hand, the sliding cover structure is relatively complex in structure, and on the other hand, after the sliding cover is opened through the sliding cover structure, the sliding cover may extend out of the shell, which may result in poor consistency of appearance of the laser projection television.

In addition, the household appliance market focuses on the design of the home style more and more, a layer of covering made of cloth or leather is coated on the surface of the household appliance, and meanwhile, the appearance of the product coated with the covering is required to have extremely high integrity. Under the background of the demand, the scheme that the laser projection television adopts the sliding cover structure can not meet the integral demand any more. Because the sliding cover structure must regard slidable lid and setting sliding cover structure casing as the components of a whole that can function independently structure to make and fix the partial covering on the casing and fix and must leave the gap between the partial covering on the lid, lead to the covering can not adopt the mode that wholly sets up, and then make the outward appearance of the laser projection TV who has the cladding covering whole relatively poor.

In the related art, the design of the flip cover is adopted, and the housing and the cover of the laser projection television are connected by a hinge, so that the cover can be opened or closed relative to the laser light outlet in a flip manner, thereby solving the above problems. However, the hinge capable of realizing the above functions only is a screen folding hinge used in a folding screen mobile phone, and the hinge is complex in structure and very expensive in price and cannot meet the requirement of a laser projection television on cost, so that the popularization and application of the screen folding hinge on the laser projection television are limited.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a turnover mechanism and projection equipment, and can drive parts such as a cover body arranged on the turnover mechanism to turn over.

In one aspect, an embodiment of the present application provides a turnover mechanism, including: the electronic device comprises a base body, a support piece and a driving piece, wherein the base body is used for being fixed on the electronic device; the supporting piece comprises a transmission section and a supporting section, and the supporting section is connected with a cover body of the electronic equipment; the driving piece is used for driving the transmission section to do circular motion so that the supporting section drives the cover body to turn over and the opening in the electronic equipment is opened or closed.

In the embodiment of the application, the turnover mechanism can be fixed on the electronic equipment through the base body due to the base body; meanwhile, the supporting piece is provided with a transmission section and a supporting section, the transmission section can do circular motion under the driving of the driving piece, parts such as the cover body and the like which need to be overturned can be arranged on the supporting piece, and when the driving piece drives the supporting piece to do circular motion, the parts such as the cover body and the like which need to be overturned can be driven to overturn.

In a possible implementation manner of the present application, the base body has a limiting channel, the transmission section is movably disposed in the limiting channel, the support section is located outside the limiting channel, and the transmission section is driven by the driving member to perform a circular motion along the limiting channel.

In one possible implementation of the present application, the tangent plane of the limiting channel and the tangent plane of the supporting section are both sector-ring-shaped in the extending direction along the limiting channel.

In one possible implementation manner of the present application, the limiting channel includes an arc guide groove, and the transmission section includes an arc guide rail matched with the arc guide groove; the tangent plane of the arc guide groove and the tangent plane of the arc guide rail are both in fan-shaped shapes along the extension direction of the arc guide groove.

In a possible implementation manner of the present application, at least two first limiting wheels and at least two second limiting wheels are disposed on the substrate, the circumferential surfaces of the at least two first limiting wheels are tangent to a same first virtual circular arc, the circumferential surfaces of the at least two second limiting wheels are tangent to a same second virtual circular arc, the center of the first virtual circular arc coincides with the center of the second virtual circular arc, and the limiting channel includes a fan ring channel formed by a curved surface where the first virtual circular arc is located and a curved surface where the second virtual circular arc is located; the transmission section comprises an arc guide rail matched with the fan ring channel; the section of the fan ring channel and the section of the arc guide rail are both in fan ring shapes along the extension direction of the fan ring channel.

In a possible implementation manner of the present application, the turnover mechanism further includes a transmission member, the transmission member is connected to the driving member, the transmission section is provided with a driving portion, the transmission member is matched with the driving portion, and the transmission member drives the driving portion to move under the driving of the driving member.

In a possible implementation manner of the present application, the transmission member includes a gear, the driving portion is a rack engaged with the gear, the gear is connected with the driving member, and the driving member drives the transmission section to make a circular motion through the engagement between the gear and the rack.

In a possible implementation manner of the present application, the transmission member includes a friction wheel, the driving portion is a friction surface, the friction wheel is abutted to the friction surface, the friction wheel is connected to the driving member, and the driving member drives the transmission section to make a circular motion through the friction transmission of the friction wheel and the friction surface.

In a possible implementation mode of the application, a limiting structure is further arranged between the supporting piece and the base body, the limiting structure comprises a stop block arranged on the supporting piece and a boss arranged on the base body, and when the supporting piece moves, the supporting piece stops moving until the stop block is abutted against the boss.

In another aspect, an embodiment of the present application provides a projection apparatus, including: the turnover mechanism comprises a projection host, a shell, a cover body and the turnover mechanism of any one of the embodiments, wherein the projection host is provided with a projection lens; the projection system comprises a shell, a projection lens and a projection lens, wherein the shell is provided with an accommodating cavity and a projection opening, a projection host is arranged in the accommodating cavity, and the projection direction of the projection lens passes through the projection opening; the lid sets up in projection open-ended position, and the lid is connected with tilting mechanism's support section, and under the drive of support section, the lid overturns for the casing to open or close the projection opening.

In a possible implementation manner of the present application, the projection apparatus further includes a covering member, a part of the covering member is connected to the housing, another part of the covering member is connected to the cover body, and the part of the covering member connected to the cover body is turned over together with the turning over of the cover body; wherein, the virtual axis of rotation of the support member coincides with the overturning axis of the wrapping member.

The projection equipment that this application embodiment provided, owing to the tilting mechanism including above-mentioned arbitrary one embodiment, consequently have same technological effect, support piece is provided with transmission section and support section promptly, and the circular motion can be done to the transmission section under the drive of driving piece, can set up the spare part that needs the upset such as lid on support piece, when driving piece drive support piece was circular motion, can drive the spare part upset that needs the upset such as lid.

Drawings

Fig. 1 is an exploded view of a projection apparatus provided in an embodiment of the present application;

FIG. 2 is a cross-sectional view of a projection device provided in an embodiment of the present application;

fig. 3 is a schematic view illustrating a cover of a projection apparatus provided in an embodiment of the present application in a closed state;

fig. 4 is a schematic diagram illustrating a cover of a projection apparatus according to an embodiment of the present disclosure in an opened state;

FIG. 5 is an exploded view of a turnover mechanism provided in an embodiment of the present application;

FIG. 6 is a schematic view of a first embodiment of a base and a support of a canting mechanism provided in an embodiment of the present application;

FIG. 7 is a cross-sectional view of a first embodiment of a base and a support of a canting mechanism provided in an embodiment of the present application;

FIG. 8 is a schematic view of a second embodiment of a base of a canting mechanism provided in an embodiment of the present application;

FIG. 9 is a schematic view of a second embodiment of a base and a support of the canting mechanism provided in the embodiments of the present application;

FIG. 10 isbase:Sub>A schematic cross-sectional view taken along line A-A of FIG. 9 according to an embodiment of the present application;

FIG. 11 is an enlarged, fragmentary view of portion B of FIG. 10 according to an embodiment of the present disclosure;

FIG. 12 is a schematic view of a third embodiment of a base and a support of the canting mechanism provided in the embodiments of the present application;

fig. 13 is a schematic view of a fourth embodiment of a base and a support of the turnover mechanism provided in the embodiments of the present application.

Description of the reference numerals:

1-a shell; 11-a containment chamber; 12-a projection opening; 2-a cover body; 3, turning over a mechanism; 31-a substrate; 311-limit channel; 312-a first ontology; 3121-connecting column; 3122-a first through hole; 3123-boss; 313-a second body; 3131-connecting holes; 3132 — a second through hole; 3133-fixing the columns; 314-a first limit wheel; 315-a second spacing wheel; 316-first virtual arc; 317-a second virtual arc; 32-a support member; 321-a transmission section; 3211-a stopper; 322-a support section; 323-a drive section; 33-a drive member; 34-a transmission member; 35-a drive shaft; 4-a cladding; 41-the axis of overturning.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, specific technical solutions of the present application will be described in further detail below with reference to the accompanying drawings in the embodiments of the present application. The following examples are intended to illustrate the present application but are not intended to limit the scope of the present application.

In the embodiments of the present application, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present application, "a plurality" means two or more unless otherwise specified.

In addition, in the embodiments of the present application, directional terms such as "upper", "lower", "left", and "right" are defined with respect to the schematically-placed orientation of components in the drawings, and it is to be understood that these directional terms are relative concepts, which are used for descriptive and clarifying purposes, and may be changed accordingly according to changes in the orientation in which the components are placed in the drawings.

In the embodiments of the present application, unless otherwise explicitly specified or limited, the term "connected" is to be understood broadly, for example, "connected" may be a fixed connection, a detachable connection, or an integral body; may be directly connected or indirectly connected through an intermediate.

In the embodiments of the present application, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.

In the embodiments of the present application, the words "exemplary" or "such as" are used herein to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "e.g.," is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.

The embodiment of the application provides a projection device, and the working principle of the projection device is that light is irradiated onto a display element of an image to generate an image, and then the image is projected through a lens. In either type of projection apparatus, light from a light source is divided into three colors, red, green, and blue, to generate images of various colors, and the images are projected onto a projection screen through a lens. Projection apparatuses are generally classified into a bulb Light source projection apparatus, a Light Emitting Diode (LED) Light source projection apparatus, and a laser Light source projection apparatus according to the type of Light source. For convenience of description, the embodiments of the present application take laser projection as an example, and illustrate the projection apparatus provided in the embodiments of the present application.

Referring to fig. 1 and 2, fig. 1 is an exploded view of a projection apparatus provided in an embodiment of the present application, and fig. 2 is a cross-sectional view of the projection apparatus provided in the embodiment of the present application.

The projection device provided by the embodiment of the application, including casing 1, lid 2, tilting mechanism 3 and projection host (not shown in the figure), wherein, casing 1 has and holds chamber 11 and projection opening 12, lid 2 sets up the position at projection opening 12, projection host has projection lens, projection host sets up and holds in chamber 11, projection lens's projection direction passes through projection opening 12, in order to throw projection beam on projection screen, tilting mechanism 3 sets up and holds in chamber 11, and fix on casing 1, lid 2 is fixed to be set up on tilting mechanism 3, make lid 2 overturn for casing 1 through tilting mechanism 3.

Therefore, when the projection device is in a shutdown state or a standby state, the cover body 2 can close the projection opening 12 through the turnover mechanism 3, so that dust can be prevented from entering the accommodating cavity 11, and the dust is prevented from falling on the projection host and the projection lens; or the object can be blocked from falling into the accommodating cavity 11 from the projection opening 12, so that the projection lens is prevented from being damaged by foreign objects.

As shown in fig. 1, in order to make the appearance of the projection apparatus compatible with the environment where the projection apparatus is placed, a covering member 4 may be disposed on the projection apparatus, the covering member 4 may be made of a flexible material, for example, the covering member 4 may be made of a cloth material or a leather material, the covering member 4 is disposed on the casing 1 and the cover 2 of the projection apparatus, wherein a part of the covering member 4 is fixed on the casing 1, another part of the covering member 4 is fixed on the cover 2, the covering member 4 may be fixed on the casing 1 and the cover 2 by an adhesive method, a turning axis is disposed between the two parts of the covering member 4, and when the turning mechanism 3 turns the cover 2, the part of the covering member 4 fixed on the cover 2 turns around the turning axis together with the cover 2.

In order to ensure that the covering piece 4 is not separated from the cover body 2 and the shell 1 when a part of the covering piece 4 overturns along with the cover body 2, and the covering piece 4 is not wrinkled or gapped at the position of the overturning axis, the virtual axis of the virtual rotating shaft of the part directly driving the cover body 2 to overturn in the overturning mechanism 3 can be set to be coincident with the overturning axis of the covering piece 4. Thus, the part of the cover 4 fixed to the lid body 2 rotates about the turning axis during turning, and does not move relative to the other part fixed to the case 1 in other ways.

Referring to fig. 3 and 4, fig. 3 is a schematic diagram illustrating a cover of a projection apparatus provided in an embodiment of the present application in a closed state, and fig. 4 is a schematic diagram illustrating a cover of a projection apparatus provided in an embodiment of the present application in an open state. In the above embodiment, since the coating member 4 adapted to the environment where the projection apparatus is located is disposed on the projection apparatus, the projection apparatus can be adapted to the overall style of the environment where the projection apparatus is located; simultaneously, the virtual axis of the virtual rotating shaft of the part directly driving the cover body 2 to overturn in the overturning mechanism 3 is set to coincide with the overturning axis 41 of the coating piece 4, relative overturning of two parts of the coating piece 4 can be avoided, and a gap is formed in the coating piece 4, so that the flexible coating piece 4 can not generate folds or gaps between the fixed part and the overturning part of the coating piece 4 when overturning, and the integrity and the attractiveness of the projection equipment are improved.

On the basis, the embodiment of the application provides a turnover mechanism. Referring to fig. 5 and 6, fig. 5 is an exploded view of a turnover mechanism provided in an embodiment of the present application, and fig. 6 is a schematic view of a base and a support of the turnover mechanism provided in the embodiment of the present application. This turnover mechanism 3 includes: a base 31, a support 32 and a driving member 33, wherein the base 31 is used for fixing the turnover mechanism 3 on the equipment needing to use the turnover mechanism 3; the supporting member 32 includes a transmission section 321 and a supporting section 322, and the supporting section 322 can be used to fix the cover 2 that needs to be turned over by using the turning mechanism 3; the driving member 33 is in transmission connection with the supporting member 32, the driving member 33 can be fixed on the base 31 or on the electronic device, and the driving member 33 is used for driving the transmission section 321 of the supporting member 32 to perform circular motion, so that the supporting section 322 drives the cover 2 to turn over, and the opening of the electronic device can be opened or closed.

In one possible implementation, as shown in fig. 5 and 6, the base 31 is provided with a limiting channel 311; the transmission section 321 and the support section 322 of the support member 32 are fixedly connected, the transmission section 321 is arranged in the limiting channel 311 and can move along the limiting channel 311, and the support section 322 is positioned outside the limiting channel 311; the transmission section 321 can make a circular motion along the limiting channel 311 under the driving of the driving member 33.

In the embodiment of the application, since the limiting channel 311 is arranged on the base 31 and the transmission section 321 matched with the limiting channel 311 is arranged on the supporting member 32, the transmission section 321 can move along the limiting channel 311 under the driving of the driving member 33; meanwhile, the supporting section 322 is fixedly connected with the transmission section 321, the supporting section 322 is arranged outside the limiting channel 311, the articles to be overturned, such as the cover body 2, can be arranged on the supporting piece 32, and the articles to be overturned, such as the cover body 2, can be driven to overturn when the driving piece 33 drives the supporting piece 32 to do circular motion; and because the rotating shaft which enables the supporting piece 32 to do circular motion is not arranged between the supporting piece 32 and the base body 31, the structure of the turnover mechanism 3 is simplified, and the reliability of the turnover mechanism 3 is improved.

In practical applications, as shown in fig. 5, there are cases where the volume of the cover body 2 is large, or the weight of the cover body 2 is heavy, and the turnover mechanism 3 may be configured to include at least two base bodies 31, a supporting member 32 engaged with the at least two base bodies 31, and a driving member 33. Each support member 32 is disposed on a base 31, each support member 32 is in transmission connection with the same driving member 33 through a transmission shaft 35, and the support sections 322 of each support member 32 are disposed on the same plane. Therefore, the cover body 2 can be fixed on the turnover mechanism 3 through the at least two support sections 322, so that more fixing points are provided for the cover body 2, and the connection stability of the cover body 2 and the turnover mechanism 3 is improved; and adopt same driving piece 33 drive a plurality of support piece 32, can improve the synchronism of a plurality of support piece 32 movements, be favorable to making lid 2 accomplish the upset motion fast steadily.

In a possible implementation manner, as shown in fig. 6, the limiting channel 311 on the base 31 may be provided in a fan-shaped ring shape, that is, in the extending direction along the limiting channel 311, the section of the limiting channel 311 is a fan-shaped ring shape; correspondingly, the transmission section 321 on the support member 21 is also provided with a sector ring shape matching with the sector ring-shaped limiting channel 311, that is, the section of the transmission section 321 is also sector ring-shaped along the extending direction of the limiting channel 311.

In this embodiment, the limiting channel 311 and the transmission section 321 are both configured to have a structure with a sector ring-shaped section, so that the transmission section 321 can make circular motion along the limiting channel 311; the transmission section 321 is limited to only do circular motion through the limiting channel 311, and a rotating shaft which surrounds the transmission section 321 during the circular motion is not needed, so that when the turnover mechanism 3 is applied, a turnover shaft does not need to be arranged for the cover body 2 fixed on the turnover mechanism 3.

For example, as shown in fig. 6, for convenience of processing, the base 31 may be provided in a form including a first body 312 and a second body 313, a part of the restriction passage 311 is provided on the first body 312, and another part of the restriction passage 311 corresponding to the part of the restriction passage 311 on the first body 312 is provided on the second body 313; a plurality of connecting columns 3121 are provided on one side of the first body 312 facing the second body 313, correspondingly, connecting holes 3131 corresponding to the connecting columns 3121 are provided on the second body 313, and screws may be used to fixedly connect the first body 312 and the second body 313 through the connecting columns 3121 and the connecting holes 3131, so that the two parts of the limiting channels 311 on the first body 312 and the second body 313 are combined to form a complete limiting channel 311.

As shown in fig. 6, the limiting channel 311 may be configured as a circular arc guide groove, i.e. the section of the circular arc guide groove is fan-shaped in the extending direction of the circular arc guide groove, and correspondingly, the transmission section 321 is configured as a circular arc guide rail, i.e. the section of the circular arc guide rail is fan-shaped in the extending direction of the circular arc guide rail. Wherein, in the extending direction along the arc guide groove, the length of the arc guide rail can be set to be larger than that of the arc guide groove. Thus, when the arc guide rail is arranged in the arc guide groove, the arc guide rail can move along the arc guide groove with matched structure, namely the arc guide rail can do circular motion along the extending direction of the arc guide groove.

Referring to fig. 7, fig. 7 is a cross-sectional view of a base and a support of a turnover mechanism provided in an embodiment of the present application. In the extending direction of the vertical limiting channel 311, the limiting channel 311 can be arranged to be rectangular, and correspondingly, the transmission section 321 can also be arranged to be rectangular. It should be noted that, in the extending direction of the vertical limiting passage 311, the shape of the limiting passage 311 and the transmission section 321 is not limited in the present application.

As shown in fig. 7, one end of the supporting section 322 is fixed to one end of the transmission section 321, and the supporting section 322 may be disposed along a direction parallel to a radius of a circumference where the transmission section 321 is located, but the supporting section 322 is not disposed on the radius of the circumference where the transmission section 321 is located. Thus, when the arc guide rail as the transmission section 321 makes a circular motion along the arc guide groove, the support section 322 can be driven to make an overturning motion.

In another possible implementation manner, referring to fig. 8, 9, 10 and 11, fig. 8 isbase:Sub>A schematic diagram ofbase:Sub>A second embodiment ofbase:Sub>A base ofbase:Sub>A turnover mechanism provided in an embodiment of the present application, fig. 9 isbase:Sub>A schematic diagram ofbase:Sub>A second embodiment ofbase:Sub>A base andbase:Sub>A support ofbase:Sub>A turnover mechanism provided in an embodiment of the present application, fig. 10 isbase:Sub>A schematic diagram ofbase:Sub>A cross-sectional view alongbase:Sub>A directionbase:Sub>A-base:Sub>A in fig. 9 provided in an embodiment of the present application, and fig. 11 isbase:Sub>A schematic diagram ofbase:Sub>A portion B in fig. 10 provided in an embodiment of the present application in an enlarged manner.

The spacing channel 311 on the base 31 may be formed by a plurality of spacing wheels. As shown in fig. 8, 9, 10, and 11, at least two first limiting wheels 314 are disposed between the first body 312 and the second body 313 of the base 31, circumferential surfaces of the at least two first limiting wheels 314 are tangent to a same first virtual arc 316, at least two second limiting wheels 315 are disposed between the first body 312 and the second body 313, circumferential surfaces of the at least two second limiting wheels 315 are tangent to a same second virtual arc 317, the first virtual arc 316 and the second virtual arc 317 are located between the first limiting wheels 314 and the second limiting wheels 315, and a center of the first virtual arc 316 coincides with a center of the second virtual arc 317.

Exemplarily, as shown in fig. 8, 9, 10 and 11, two first limiting wheels 314 are disposed between the first body 312 and the second body 313, and both the two first limiting wheels 314 may be fixed between the first body 312 and the second body 313 through a rotating shaft; four second limiting wheels 315 are disposed between the first body 312 and the second body 313, wherein two second limiting wheels 315 are cantilevered on the first body 312 through a rotating shaft, the other two second limiting wheels 315 are cantilevered on the second body 313 through a rotating shaft, and the second limiting wheels 315 on the first body 312 and the second limiting wheels 315 on the second body 313 are disposed correspondingly.

In this embodiment, the curved surface of the first virtual arc 316 is tangent to the circumferential surfaces of the two first limiting wheels 314, the curved surface of the second virtual arc 317 is tangent to the circumferential surfaces of the four second limiting wheels 315, the limiting channel 311 includes a fan-ring channel formed by the curved surface of the first virtual arc 316 and the curved surface of the second virtual arc 317, the section of the fan-ring channel in the extending direction of the fan-ring channel is in a fan-ring shape, and correspondingly, the transmission section 321 includes an arc guide rail matched with the fan-ring channel. For example, the limiting wheel can adopt a bearing or a roller. Therefore, the arc guide rail can be arranged in the fan ring channel due to the fan ring channel formed by the limiting wheels together, and the arc guide rail can only do circular motion along the fan ring channel.

As shown in fig. 5, 6 and 9, a transmission member 34 is further disposed in the base 31, and a driving portion 323 is further disposed on the transmission section 321 of the supporting member 32 corresponding to the transmission member 34, the transmission member 34 is connected to the driving member 33, the driving member 33 drives the transmission member 34 to move, and the transmission member 34 drives the driving portion 323 to move, so that the transmission section 321 moves circumferentially along the limiting channel 311.

For example, the transmission member 34 may be a gear, and accordingly, the driving portion 323 may be a rack which is disposed in a radial direction of the circular arc guide rail in an extending direction along the circular arc guide rail and is in conformity with the shape of the circular arc guide rail, and the rack is also in a circular arc shape. A first through hole 3122 is provided on the first body 312, a second through hole 3132 corresponding to the first through hole 3122 is provided on the second body 313, a gear rotating shaft matched with the first through hole 3122 and the second through hole 3132 is provided at both sides of the gear in an axial direction of the gear, respectively, and the gear may be rotatably provided in the base body 31 through the first through hole 3122 and the second through hole 3132. A fixing post 3133 may be further disposed on a side of the second body 313 away from the first body 312, and the driving element 33 may be fixed on the base 31 through the fixing post 3133, wherein the driving element 33 may adopt a stepping motor, a servo motor, and the like.

As a further example, referring to FIG. 12, FIG. 12 is a schematic view of a third embodiment of the base and the support of the canting mechanism provided in the embodiments of the present application. The transmission member 34 may be a friction wheel, and accordingly, the driving portion 323 may be a friction surface disposed on the transmission section 321, and the friction wheel is abutted against the friction surface, and the friction wheel and the friction surface are under the action of friction force, and when the friction wheel rotates, the friction wheel drives the friction surface to move, so that the transmission section 321 moves. For example, the axial direction of the friction wheel may be arranged parallel to the axial direction of the transmission section 321, and the friction surface may be arranged in the circumferential direction of the transmission section 321. And the transmission section 321 drives the friction surface to move through the friction wheel under the limitation of the limiting channel 311, so that when the transmission section 321 moves, the transmission section 321 can only do circular motion.

Referring to fig. 13, fig. 13 is a schematic view of a fourth embodiment of a base and a support of the turnover mechanism provided in the embodiment of the present application. A limit structure is provided between the base 31 and the support 32, by which the range of movement of the support 32 relative to the base 31 can be limited. For example, two stoppers 3211 may be respectively disposed at two ends of the transmission section 321 of the supporting member 32, and bosses 3123 corresponding to the two stoppers 3211 may be respectively disposed on the first body 312 of the base 31. When the transmission section 321 moves along the limiting channel 311, the transmission section 321 stops moving, that is, the support member 32 stops moving, until the corresponding stopper 3211 abuts against the boss 3123.

The above description is only a preferred embodiment of the present application, and not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings of the present application, or which are directly or indirectly applied to other related technical fields, are included in the scope of the present application.

Claims (10)

1. A turnover mechanism, comprising:

a base body (31), the base body (31) being for fixing to an electronic device;

a support (32), the support (32) comprising a transmission section (321) and a support section (322), the support section (322) being connected with a cover (2) of the electronic device;

the driving piece (33), the driving piece (33) is used for driving the transmission section (321) to do circular motion, so that the supporting section (322) drives the cover body (2) to overturn, and the opening on the electronic equipment is opened or closed.

2. The turnover mechanism of claim 1, wherein the base body (31) is provided with a limiting channel (311), the transmission section (321) is movably arranged in the limiting channel (311), the support section (322) is positioned outside the limiting channel (311), and the transmission section (321) makes a circular motion along the limiting channel (311) under the driving of the driving piece (33).

3. A turnover mechanism according to claim 2 in which the cut surfaces of the passage (311) and of the support section (322) are both sector-annular in the direction of extension of the passage (311).

4. The turnover mechanism of claim 2, wherein the limit channel (311) comprises an arc guide groove, and the transmission section (321) comprises an arc guide rail matched with the arc guide groove;

and the tangent plane of the arc guide groove and the tangent plane of the arc guide rail are both in a sector ring shape along the extension direction of the arc guide groove.

5. The turnover mechanism of claim 3, wherein the base (31) is provided with at least two first limiting wheels (314) and at least two second limiting wheels (315), the circumferential surfaces of the at least two first limiting wheels (314) are tangent to a same first virtual arc (316), the circumferential surfaces of the at least two second limiting wheels (315) are tangent to a same second virtual arc (317), the center of the first virtual arc (316) is coincident with the center of the second virtual arc (317), and the limiting channel (311) comprises a fan-ring channel formed by a curved surface where the first virtual arc (316) is located and a curved surface where the second virtual arc (317) is located;

the transmission section (321) comprises a circular arc guide rail matched with the fan ring channel;

and the section of the fan-shaped channel and the section of the arc guide rail are both in fan-shaped shapes along the extension direction of the fan-shaped channel.

6. The turnover mechanism of any one of claims 1 to 5, further comprising a transmission member (34), wherein the transmission member (34) is connected to the driving member (33), a driving portion (323) is disposed on the transmission section (321), the transmission member (34) is engaged with the driving portion (323), and the transmission member (34) drives the driving portion (323) to move under the driving of the driving member (33).

7. The turnover mechanism of claim 6, wherein the transmission member (34) comprises a gear, the driving part (323) is a rack engaged with the gear, the gear is connected with the driving member (33), and the driving member (33) drives the transmission section (321) to make a circular motion through the engagement transmission of the gear and the rack.

8. The turnover mechanism according to claim 6, characterised in that the transmission member (34) includes a friction wheel, the driving portion (323) is a friction surface, the friction wheel abuts against the friction surface, the friction wheel is connected to the driving member (33), and the driving member (33) drives the transmission section (321) to move circularly through the friction transmission between the friction wheel and the friction surface.

9. A projection device, comprising:

the projection host is provided with a projection lens;

the projection system comprises a shell (1), wherein the shell (1) is provided with an accommodating cavity (11) and a projection opening (12), the projection host is arranged in the accommodating cavity (11), and the projection direction of the projection lens passes through the projection opening (12);

a cover (2), the cover (2) being arranged at the position of the projection opening (12);

turnover mechanism (3) according to one of claims 1 to 8, characterised in that said cover (2) is connected to said support section (322) of said turnover mechanism (3), said cover (2) being turned over relative to said casing (1) under the influence of said support section (322) in order to open or close said projection opening (12).

10. The projection device according to claim 9, further comprising a covering member (4), wherein one part of the covering member (4) is connected to the housing (1) and the other part of the covering member is connected to the cover (2), and the part of the covering member (4) connected to the cover (2) is turned over together with the turning over of the cover (2);

wherein the virtual axis of rotation of the support (32) coincides with the overturning axis (41) of the wrapping (4).

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