CN111290201B

CN111290201B - Projection device and cover door assembly thereof

Info

Publication number: CN111290201B
Application number: CN201811496952.1A
Authority: CN
Inventors: 易琪; 程文波; 熊再祥; 谢颂婷
Original assignee: Appotronics Corp Ltd
Current assignee: Shenzhen Appotronics Corp Ltd
Priority date: 2018-12-07
Filing date: 2018-12-07
Publication date: 2021-09-28
Anticipated expiration: 2038-12-07
Also published as: WO2020114228A1; CN111290201A

Abstract

The application provides a lid door subassembly, including casing, first lid, second lid and actuating mechanism, wherein, the casing is equipped with and shows the hole, first lid and the equal movably connection of second lid in the casing, and can together close the lid show the hole. The driving mechanism is respectively connected with the first cover body and the second cover body and is used for driving the first cover body and the second cover body to move so as to expose or cover the exposure hole; when the exposure hole is exposed, the first cover body and the second cover body are driven by the driving mechanism respectively to move along a first direction, and in a second direction perpendicular to the first direction, the first cover body and the second cover body are driven by the driving mechanism respectively to be away from each other. Therefore, the cover door assembly provided by the application can provide a larger movement space for the movement of the first cover body through the movement of the second cover body relative to the shell, and avoids the phenomenon that the first cover body is opened to clamp the shell or fails to open due to insufficient movement space. The application also provides a projection device.

Description

Projection device and cover door assembly thereof

Technical Field

The application relates to the field of electronic equipment, in particular to a projection device and a cover door assembly thereof.

Background

At present, a shell of a projection device is generally provided with a sliding cover door structure, on one hand, the sliding cover door is closed under the condition that the device does not work so as to protect a lens in the shell from being collided by foreign objects, and on the other hand, the sliding cover door plays a role in preventing dust to a certain extent for the lens.

The sliding cover door is usually movably disposed on the upper cover of the camera device, and when the device is started, the sliding cover door is opened, and the opening action of the sliding cover door is represented as moving into the housing and sliding to the side to expose the lens, so that the sliding cover door is not allowed to have an obstacle during the sliding process to cause the housing to be jammed. However, in the actual use process, the device upper cover may deform due to the external force, so that the device upper cover may block the sliding of the sliding door due to the deformation, and the sliding door may be jammed or fail to open during the opening process.

Disclosure of Invention

In view of the above, the present application provides a projection apparatus and a cover assembly thereof, which can effectively solve the above problems.

The application provides a lid door subassembly, including casing, first lid, second lid and actuating mechanism, wherein, the casing is equipped with and shows the hole, first lid and the equal movably connection of second lid in the casing, and can together close the lid show the hole. The driving mechanism is respectively connected with the first cover body and the second cover body and is used for driving the first cover body and the second cover body to move so as to expose or cover the exposure hole; when the exposure hole is exposed, the first cover body and the second cover body are driven by the driving mechanism respectively to move along a first direction, and in a second direction perpendicular to the first direction, the first cover body and the second cover body are driven by the driving mechanism respectively to be away from each other.

The application also provides a projection device, which comprises a projection device main body and the cover door assembly, wherein the projection device main body is connected with the cover door assembly, the projection device main body comprises a lens, and the cover door assembly can selectively shield or expose the lens.

The application provides a projection device and cover door subassembly thereof, including first lid and the second lid that can move relative to the casing, when the cover door subassembly is opened, can move the relative casing of second lid, can provide bigger motion space for the motion of first lid, avoid first lid to open the card shell or open the phenomenon production of failure because of the motion space is not enough.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic diagram of a projection apparatus provided in an embodiment of the present application.

Fig. 2 is a schematic perspective view of a cover and door assembly provided in an embodiment of the present application.

Fig. 3 is a perspective view of another perspective of the cover and door assembly of fig. 2.

Fig. 4 is a partial isometric view from yet another perspective of the cover and door assembly of fig. 2.

Fig. 5 is a partial schematic view of a first transmission assembly of the lid door assembly of fig. 2.

Fig. 6 is a schematic flowchart of a control method of a cover and door assembly according to an embodiment of the present disclosure.

Detailed Description

In order to make those skilled in the art better understand the technical solutions of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.

Referring to fig. 1, an embodiment of the present application provides a projection apparatus 100, where the projection apparatus 100 includes a projection apparatus main body 101 and a cover door assembly 200, and the cover door assembly 200 is connected to the projection apparatus main body 101. The projection apparatus main body 101 includes a lens 1011, the lens 1011 is disposed opposite to the door assembly 200, and the door assembly 200 can selectively shield or expose the lens 1011. It should be noted that the projection apparatus main body 101 may further include internal structural components, such as an optical engine, a control main board, and the like, and the structures and the connection relationships of the internal structural components, such as the optical engine, the control main board, and the like, refer to the prior art, and are not described herein again.

Referring to fig. 2 and 3, the cover assembly 200 includes a housing 10, a first cover 20, a driving mechanism 30, a first guide assembly 40, a second cover 50, and a second guide assembly 70.

The housing 10 has an exposure hole 110, and when the housing 10 accommodates the projection apparatus main body 101, the lens 1011 of the projection apparatus 100 is exposed through the exposure hole 110. The first track assembly 40 and the second track assembly 70 are fixed to the housing, the first cover 20 and the second cover 50 are both movably connected to the housing 10, and the first cover 20 and the second cover 50 are arranged in parallel to cover the exposed hole 110. The driving mechanism 30 is respectively connected to the first cover 20 and the second cover 50, and specifically, the driving mechanism 30 includes a first transmission assembly 310 connected to the first guide rail assembly 40 and a second transmission assembly 610 connected to the second guide rail assembly 70, and the first cover 20 is connected to the first transmission assembly 310 and is guided by the first transmission assembly 310 to move relative to the housing 10. The second cover 50 is connected to the second transmission assembly 610 and can move relative to the housing 10 under the guidance of the second transmission assembly 610. For example, when the exposure hole is exposed, the first cover 20 and the second cover 50 are guided by the first transmission assembly 310 and the second transmission assembly 610, respectively, to move along a first direction, and in a second direction perpendicular to the first direction, the first cover 20 and the second cover 50 are guided by the first transmission assembly 310 and the second transmission assembly 610, respectively, to move away from each other.

Referring to fig. 1 again, in order to clearly describe the moving directions of the first cover 20 and the second cover 50, in the present embodiment, the direction shown in fig. 1 is taken as an exemplary description, the lens 1011 is taken as a reference point in the vertical direction, the direction in which the vertical direction approaches the lens 1011 during the movement is defined as downward movement, and the direction in which the vertical direction is away from the lens 1011 during the movement is defined as upward movement. The direction in which the first cover 20 is inserted into the exposure hole 110 in the horizontal direction is defined as a backward movement, and the direction in which the second cover 50 is directed from the first cover 20 to the second cover 50 in the horizontal direction is defined as a forward movement. For example, the first cover 20 moves downward and moves backward along a trajectory in which the first cover 20 approaches the lens 1011 in the vertical direction and also moves closer to the second cover 50 in the horizontal direction. When the cover and door assembly 200 is opened, the first cover 20 moves along the downward and backward movement tracks, and the second cover 50 moves along the upward and backward movement tracks to avoid the first cover 20, so that the lens 1011 is smoothly exposed. In this embodiment, the first direction is the movement of the first cover 20 and the second cover 50 along the horizontal direction, and the second direction is the movement of the first cover 20 and the second cover 50 along the vertical direction, in which case the second direction is substantially perpendicular to the first direction.

Referring to fig. 2 again, in the embodiment, the housing 10 may cover the projection device main body 101 and is opposite to the lens 1011. The housing 10 comprises a first surface 120 and a second surface 130 facing away from each other. The first surface 120 is a surface of the casing 10 facing away from the projection device main body 101, and the second surface 130 is a surface of the casing 10 facing toward the projection device main body 101. The exposure hole 110 penetrates the first surface 120 and the second surface 130 so as to expose the lens 1011. In the present embodiment, the exposure holes 110 are rectangular, and in other embodiments, the exposure holes 110 may be circular, polygonal, or other geometric figures.

Referring to fig. 1 and fig. 2, in the present embodiment, the first cover 20 and the second cover 50 are both substantially rectangular plate-shaped, and when the first cover 20 and the second cover 50 are arranged in parallel, the exposure hole 110 can be covered together. In the embodiment, the size and shape of the first cover 20 and the second cover 50 when they are arranged side by side are substantially the same as the size and shape of the exposure hole 110, and at this time, the first cover 20 and the second cover 50 are embedded into the exposure hole 110, so that the appearance of the housing 10 is complete, and the lens 1011 is protected. It should be noted that, when the exposure holes 110 are circular, polygonal or other geometric figures, the first cover 20 and the second cover 50 are arranged in parallel to form a corresponding circular, polygonal or other geometric figure, so as to ensure the complete appearance of the housing 10.

In this embodiment, when the first cover 20 and the second cover 50 are inserted into the exposure hole 110, the first cover 20 and the lens 1011 are disposed opposite to each other, and the lens 1011 can be exposed when the first cover 20 moves relative to the housing 10, and the movement of the second cover 50 relative to the housing 10 is to avoid the movement of the first cover 20. In one embodiment, the thicknesses of the first cover 20 and the second cover 50 are the same, and the thicknesses of the first cover 20 and the second cover 50 are substantially equal to the thickness of the casing 10, so that when the first cover 20 and the second cover 50 are inserted into the exposure hole 110, no protrusion or depression is formed on the first surface 120, which may affect the appearance, and no internal structural components of the projection apparatus main body 101 may be pressed to maintain the flatness of the first surface 120. In another embodiment, the thicknesses of the first cover 20 and the second cover 50 are the same, and the thicknesses of the first cover 20 and the second cover 50 are both smaller than the thickness of the casing 10, so that the first surface 120 can be kept flat when the first cover 20 and the second cover 50 are arranged side by side, and the cost can be saved without affecting the aesthetic appearance of the first surface 120.

Further, the housing 10, the first cover 20 and the second cover 50 may be made of the same material, such as a metal material or a wear-resistant polymer material, so as to make the appearance surface have the same gloss. In another embodiment, the housing 10, the first cover 20 and the second cover 50 may be made of different materials, for example, the housing 10 is made of metal, the first cover 20 and the second cover 50 are made of wear-resistant polymer, and the appearance of the different materials may give different visual feelings to the user.

In the present embodiment, the first rail assembly 40 is connected to the casing 10, and the first rail assembly 40 includes two first rail plates 410, and the two first rail plates 410 are both connected to the first surface 120 of the casing 10 and respectively disposed at two sides of the exposure hole 110 so as to be disposed corresponding to the first cover 20. Further, each first rail plate 410 is substantially perpendicular to the housing 10, that is, two first rail plates 410 are disposed substantially in parallel and opposed. Each of the first rail plates 410 is provided with a first rail 411 and a second rail 412, and the first rail 411 and the second rail 412 are used to cooperate with the driving assembly 310 to guide the moving direction of the first cover 20.

In the present embodiment, the first guide rail 411 is a guide groove structure formed on the first guide rail plate 410, and is used to provide one motion trajectory of the first cover 20. The first guide rail 411 is provided with a first guiding portion 4111 and a first extending portion 4112, and the first extending portion 4112 is connected to one end of the first guiding portion 4111 close to the second cover 50. The first guide portion 4111 extends toward the housing 10 from an end of the first guide portion 4111 close to the second cover 50 to an end of the first guide portion 4111 away from the second cover 50. In this embodiment, the first guiding portion 4111 forms a bend along the second direction, and the bending track is substantially arc-shaped. It should be noted that, the first guide portion 4111 may fix the first cover 20 to prevent the first cover 20 from sliding down.

In this embodiment, the first extending portion 4112 is substantially in the form of a linear rail, and one end of the first extending portion 4111 extends substantially linearly toward the housing 10. Optionally, the first extending portion 4112 extends linearly and is also disposed obliquely to the housing 10. Specifically, a distance between one end of the first extending portion 4112 close to the first guide portion 4111 and the first surface 120 is greater than a distance between one end of the first extending portion 4111 away from the first guide portion 4111 and the first surface 120. It is understood that in other embodiments, the first extending portion 4112 may also extend in parallel with respect to the housing 10, that is, the first extending portion 4112 may also be substantially parallel to the first surface 120 of the housing 10.

The second guide 412 is disposed between the first guide 411 and the housing 10, and the second guide 412 is used to provide another motion track of the first cover 20. In the present embodiment, the second rail 412 is a guide groove structure formed on the first rail plate 410, and has a substantially linear rail shape. Further, the second rail 412 extends substantially parallel with respect to the housing 10. It will be appreciated that in some embodiments, the second rail 412 may also be disposed at an angle relative to the housing 10, and the angle at which the second rail 412 is inclined relative to the housing 10 is substantially the same as the first extension 4112, i.e., the second rail 412 may be substantially parallel to the first extension 4112. It is understood that, in other embodiments, the first rail 411 and the second rail 412 may also be in the form of rails of solid tracks or rails of grooves, and are not limited to the embodiments described in this application.

Further, referring to fig. 3, the first transmission assembly 310 is connected between the first rail assembly 40 and the first cover 20. The first transmission assembly 310 is configured to be selectively coupled to the first rail 411 or the second rail 412 of the first rail assembly 40, so as to guide the first cover 20 to move along the movement track provided by the first rail 411 or the second rail 412.

Specifically, the driving mechanism 30 further includes a first driving member 320 connected to the first transmission assembly 310, and the first transmission assembly 310 is selectively coupled to the first guide rail 411 or the second guide rail 412 and connected to the first cover 20. The first driving member 320 is used for driving the first transmission assembly 310 to drive the first cover 20 to move.

In this embodiment, the first driving member 320 is a motor, and the first transmission assembly 310 includes a first gear 311, a first rack 312, and a first connecting member 313, which are connected in sequence. In this embodiment, the first rack 312 and the first connecting member 313 can serve as an actuating end of the first transmission assembly 310 to drive the first cover 20 to move.

Referring to fig. 4 and 5, the first gear 311 is rotatably disposed on the first rail plate 410, and the first rack 312 is engaged with the first gear 311 and movably engaged with the first rail 411 or the second rail 412. Further, a first guiding column 3121 may be protrudingly disposed on the first rack 312, and the first guiding column 3121 protrudes into the first guiding rail 411 or the second guiding rail 412, so as to realize the sliding fit between the first rack 312 and the first guiding rail 411 or the second guiding rail 412. The first connecting member 313 is connected between the first cover body 20 and the first rack 312. The first driving member 320 is connected to the first gear 311, and when the first driving member 320 is started, the first driving member drives the first gear 311 to rotate, so as to drive the first rack 312 to slide along the first guide rail 411 or the second guide rail 412, thereby driving the first connecting member 313 to drive the first cover body 20 to move relative to the housing 10.

In this embodiment, when the first cover 20 is inserted into the exposing hole 110, the first cover 20 is considered to be in the initial state, and at this time, the first rack 312 is engaged with the first guide portion 4111 of the first guide rail 411. Specifically, in the initial state of the first cover body 20, the first guide column 3121 of the first rack 312 is located at an end of the first guide portion 4111 away from the first extended portion 4112. At this time, when the first rack 312 slides along the first guide rail 411, specifically, when the first rack 312 slides along the first guide portion 4111 toward the first extending portion 4112, the first cover 20 moves relative to the housing 10 along a substantially downward movement and a substantially rearward movement. If the first rack 312 is engaged with the second track 412, when the first rack 312 slides along the second track 412, the track of the movement of the first cover 20 relative to the housing 10 is substantially moved backwards.

It should be noted that, in the present embodiment, the first rail assembly 40 includes two first rail plates 410, and therefore, the first gear 311, the first rack 312, and the first connector 313 are respectively provided in two.

Further, the two first gears 311 are connected by the first linkage assembly 330, so that the two first gears 311 can be driven to move simultaneously by the single first driving member 320, thereby reducing the control unit and the production cost. The first linkage assembly 330 may include a first transmission rod (not shown), a first transmission belt (not shown), and a first pulley (not shown).

Specifically, the first transmission rod is rotatably connected to the housing 10, the two first belt pulleys are respectively connected to the two first gears 311, the two first transmission belts are respectively disposed at two ends of the first transmission rod, and each first transmission belt is connected between the first transmission rod and the corresponding first belt pulley, so that the rotational motion of one of the first gears 311 can be transmitted to the other first gear 311. In this embodiment, by arranging the paired first guide rail plates 410, the paired first transmission assemblies 310 and the first linkage assemblies 330, when the first cover body 20 is driven to move, a balanced acting force can be applied to two opposite sides of the first cover body 20, so that the first cover body 20 is not inclined towards one side due to unbalanced stress in the moving process, and the moving effect of the first cover body 20 is smooth and stable.

Accordingly, the second rail assembly 70 is connected to the housing 10. in this embodiment, the second rail assembly 70 has substantially the same structure as the first rail assembly 40, and the second rail assembly 70 also includes two second rail plates 710. The two second rail plates 710 are connected to the first surface 120 of the housing 10 and disposed at both sides of the exposure hole 110, respectively, to correspond to the second cover 50. As shown in fig. 4, in this embodiment, the second rail plate 710 and the first rail plate 410 are both provided with two ends of the longer side of the exposure hole 110, and the second rail plate 710 and the first rail plate 410 are in the same straight line. Therefore, each of the second rail plates 710 is also substantially perpendicular to the housing 10, that is, two second rail plates 710 are disposed substantially in parallel and opposite. Further, each of the second rail plates 710 is provided with a third rail 711, and the third rail 711 is used for cooperating with the second driving assembly 610 to guide the moving direction of the second cover 50.

In the present embodiment, the third rail 711 is a guide groove structure formed on the second rail plate 710, and is used to provide a movement locus of the second cover 50. The third rail 711 is provided with a third guide portion 7111 and a third extending portion 7112, and the third extending portion 7112 is connected to one end of the third guide portion 7111 away from the first cover 20. From the end of the third guide portion 7111 far away from the first cover 20 to the end of the third guide portion 7111 near the exposed hole of the first cover 20, the third guide portion 7111 extends in the direction far away from the housing 10. The arc-shaped third guide portion 7111 may fix the second cover 50, so as to prevent the second cover 50 from sliding down.

In this embodiment, the third expanded portion 7112 is substantially in the form of a linear rail, and an end thereof away from the third guide portion 7111 extends substantially linearly toward the housing 10. That is, the third extension 7112 is disposed obliquely with respect to the case 10. Specifically, the distance between the end of the third expanded portion 7112 close to the third guide portion 7111 and the first surface 120 is greater than the distance between the end of the third expanded portion 7111 far from the first surface 120. In some embodiments, the third extension 7112 may also extend parallel relative to the housing 10. That is, the third extension 7112 may also be substantially parallel to the first surface 120 of the housing 10. It is understood that in other embodiments, the third rail 711 may also be in the form of a rail of a solid track, or a rail of a groove, and is not limited to the embodiments described in this application.

Further, referring to fig. 3, a second transmission assembly 610 is connected between the second rail assembly 70 and the second cover 50. The second transmission assembly 610 is slidably engaged with the third rail 711 to guide the second cover 50 to move along the track provided by the third rail 711.

The structure of the second transmission assembly 610 is substantially the same as that of the first transmission assembly 310, and the driving mechanism 30 further includes a second driving member 620 connected to the second transmission assembly 610. The second driving member 620 is used for driving the second transmission assembly 610 to drive the second cover 50 to move.

In this embodiment, the second driving member 620 is a motor, and the second transmission assembly 610 includes a second gear 611, a second rack 612 and a second connecting member 613 which are connected in sequence. It should be noted that the second rack 612 and the second connecting member 613 can be used as an actuating end of the second transmission assembly 610 to drive the second cover 50 to move.

Referring to fig. 3 and 4, the second gear 611 is rotatably disposed on the second rail plate 710, and the second rack 612 is engaged with the second gear 611 and slidably engaged with the third rail 711. Further, a second guiding column 6121 may be convexly disposed on the second rack 612, and the second guiding column 6121 is convexly disposed into the third guiding rail 711, so as to realize the sliding fit between the second rack 612 and the third guiding rail 711. The second connecting member 613 is connected between the second cover 50 and the second rack 612. The second driving element 620 is connected to the second gear 611, and when the second driving element 620 is started, it drives the second gear 611 to rotate, so as to drive the second rack 612 to move along the third rail 711, thereby driving the second connecting element 613 to drive the second cover 50 to move relative to the housing 10.

In this embodiment, when the second cover 50 is fitted into the exposure hole 110, the second cover 50 is considered to be in the initial state. At this time, the second rack 612 is engaged with the third guide portion 7111 of the third rail 711. Specifically, in the initial state of the second cover 50, the second guiding column 6121 of the second rack 612 is located at one end of the third guiding portion 7111 away from the third extending portion 7112. At this time, when the second gear 612 moves along the third guide rail 711, specifically, when the second gear 612 moves along the third guide portion 7111 toward the third expanded portion 7112, the trajectory of the movement of the second cover 50 relative to the housing 10 is substantially, upward movement and rearward movement. Since the movement locus of the first cover 20 is substantially downward movement and backward movement or substantially backward movement, the second cover 50 can avoid the first cover 20 by the movement locus of the substantially upward movement and backward movement, so that the first cover 20 can be smoothly opened to expose the lens 1011. That is, when the lens 1011 is exposed, the first cover 20 and the second cover 50 are respectively driven by the driving mechanism 30 to move in the first direction, and in the second direction perpendicular to the first direction, the first cover 20 and the second cover 50 are respectively driven by the driving mechanism 30 to move away from each other.

It should be noted that, in the present embodiment, the second rail assembly 70 includes two second rail plates 710, and therefore, the second gear 611, the second rack 612, and the second connecting member 613 are respectively provided in two.

Further, the two second gears 611 are connected with each other through the second linkage assembly 630, so that the two second gears 611 can be driven to move simultaneously by providing a single second driving member 620, thereby reducing the control unit and the production cost. The second linkage assembly 630 may include a second transmission rod (not shown), a second transmission belt (not shown), and a second pulley (not shown).

Specifically, the second transmission rod is rotatably connected to the housing 10, the two second pulleys are respectively connected to the two second gears 611, the two second transmission belts are respectively disposed at two ends of the second transmission rod, and each second transmission belt is connected between the second transmission rod and the corresponding second pulley, so that the rotational motion of one of the second gears 611 can be transmitted to the other second gear 611. In this embodiment, the paired second rail plates 710 and the paired second transmission assemblies 610 can provide balanced acting force to two opposite sides of the second cover 50 when driving the second cover 50 to move, so that the second cover 50 cannot tilt to one side due to unbalanced force during the moving process, which affects the moving effect of the second cover 50.

The projection apparatus 100 and the door assembly 200 provided by the present application include a first cover 20 and a second cover 50 that can move relative to the housing 10, and when the door assembly 200 is opened, the second cover 50 can move relative to the housing 10, so as to provide a larger movement space for the movement of the first cover 20, and avoid the phenomenon that the first cover 20 is jammed or fails to open due to insufficient movement space.

Further, referring to fig. 1, the cover and door assembly 200 further includes a distance sensor 80, and the distance sensor 80 is disposed on the second cover 50. The distance sensor 80 is used for acquiring a relative distance between the second cover 50 and a designated position of the projection apparatus main body 101 to determine whether to allow the second transmission assembly 610 to control the movement of the second cover 50.

The designated position may be a plane where a side of the internal structural member closest to the second cover 50 is close to the second cover 50. For example, the projection apparatus main body 101 may have a reference surface 1013 (as shown in fig. 1), and the reference surface 1013 may be the designated portion when the reference surface 1013 is disposed opposite to the second cover 50.

In other embodiments, the distance sensor 80 may be disposed at other places where the relative distance between the second cover 50 and the designated position can be acquired, such as a position on the projection apparatus main body 101 opposite to the second cover 50.

In this embodiment, the distance sensor 80 may be an optical sensor, an infrared sensor, an acoustic wave sensor, or the like, and the relative distance between the second cover 50 and the designated location may be obtained by emitting a light pulse, an infrared ray, or an acoustic wave and according to the time of receiving the reflected light pulse, infrared ray, or acoustic wave, which is not described herein again.

In the present embodiment, the initial state of the second cover 50 is defined when the second cover 50 is inserted into the exposure hole 110. When the second cover 50 is set to be in the initial state at the time of factory shipment, the first cover 20 can move to between the second cover 50 and the designated portion without being obstructed, and the relative distance between the second cover 50 and the designated portion of the projection apparatus main body 101 at this time is set to be the preset distance. In actual use, the second cover 50 may be bent due to the plastic deformation, and the relative distance between the second cover 50 and the designated portion is smaller than the predetermined distance, so as to hinder or block the movement of the first cover 20. It should be noted that the sliding door assembly 200 of the present application can control the movement of the second cover 50 according to the deformation state of the second cover 50, so as to avoid the first cover 20. For example, the relative distance between the second cover 50 and the designated portion may be obtained and compared with the preset distance, so as to determine whether the second cover 50 needs to move to avoid the movement path of the first cover 20, so that the second cover 50 does not block the movement of the first cover 20.

Further, since the movement locus of the first cover 20 is determined, the position of the initial state of the second cover 50 at the time of shipment is determined, and the position and size of the designated portion of the projection apparatus main body 101 are also determined, the preset distance is a determined value, and the value thereof is effective and reliable. Only in the using process, the second cover 50 may deform due to external factors, such as external force, or due to self internal stress, and then the relative distance between the second cover 50 and the designated portion may change, so that the obtained relative distance needs to be compared with the preset distance, and it is determined whether to control the movement of the second cover 50.

In this embodiment, if the obtained relative distance is smaller than the preset distance, it is described that the first cover body 20 is blocked by the second cover body 50 when moving along the original path, and at this time, the second cover body 50 may be controlled to move to avoid the first cover body 20. If the obtained relative distance is greater than the preset distance, it indicates that the first cover 20 is not blocked by the second cover 50 when moving along the original path, and at this time, the second cover 50 may be controlled to maintain the initial state. By providing the distance sensor 80, the second cover 50 can be intelligently controlled.

The embodiment of the application also provides a cover and door assembly control method which can be applied to the projection device provided in the embodiment. The projection device comprises a projection device main body and a cover door assembly, wherein the cover door assembly is connected to the projection device main body. The projection device body comprises a lens, and the cover door component can selectively shield or expose the lens. Further, the cover door assembly comprises a shell, a first cover body and a second cover body, and the second cover body is provided with a distance sensor. According to the cover and door assembly control method, the position information of the second cover and the position information relative to the projection device main body are obtained through the distance sensor, so that the opening scheme of the cover and door assembly is determined, and the cover and door assembly is controlled to be opened.

Specifically, referring to fig. 6, the cover and door assembly control method provided by the present application includes:

s101: and acquiring an opening instruction of the cover door assembly.

The opening instruction of the cover door component refers to an instruction which is input to the cover door component and controls the first cover body to open so as to expose the lens. For example, when the user uses the projection apparatus, the lens disposed on the projection apparatus main body is exposed through the exposure hole by controlling the movement of the cover door assembly, and at this time, the user may input an opening instruction to the cover door assembly through a remote controller or a control button.

S102: and acquiring the position information of the second cover body relative to the projection device main body.

In the present embodiment, the position information of the second cover with respect to the projection apparatus main body is a relative distance between the second cover and a predetermined portion of the projection apparatus main body. The designated position may be a plane on which a side of the internal structural member closest to the second cover body is located near the second cover body.

Further, the position information of the second cover body relative to the projection device is acquired through a distance sensor arranged on the second cover body. In this embodiment, the distance sensor is an infrared sensor, and the infrared sensor can obtain the distance between the second housing and the second cover and the designated portion by emitting infrared rays and according to the time of receiving the reflected infrared rays. In other embodiments, the distance sensor may be a sensor capable of measuring the relative distance between two objects, such as an acoustic wave sensor or a hall sensor. Alternatively, the distance sensor may also be an optical sensor or an acoustic wave sensor, and the like, and the relative distance between the second housing and the designated portion is obtained by emitting a light pulse or an acoustic wave and according to the time when the reflected light pulse or acoustic wave is received.

S103: and determining the opening scheme of the cover door assembly according to the position information.

Further, the opening scheme of the door covering assembly is determined according to the comparison result of the relative distance in the acquired position information and the preset distance. The preset distance is a relative distance between the second cover body and the designated part of the projection device main body when the second cover body is set to be in an initial state when the second cover body leaves a factory, the first cover body moves along the first preset track and moves to the position between the second cover body and the designated part without being hindered. In this embodiment, the state where the second lid is in the initial state refers to a state where the second lid is fitted into the exposure hole. The first preset track refers to a moving process that the first cover body moves downwards and moves backwards or backwards, and the lens is exposed from the exposure hole.

Specifically, when the relative distance is smaller than the preset distance information, the first cover body moves along the first preset track and is blocked by the second cover body, so that the second cover body needs to be controlled to move along the second preset track while the first cover body is controlled to move along the first preset track. Therefore, the opening scheme of the cover and door assembly is determined to be that the first cover body is controlled to move along a first preset track, and the second cover body is controlled to move along a second preset track. In this embodiment, the second predetermined track refers to a predetermined track of the second cover moving upward and then backward. In some embodiments, the second predetermined track may refer to a predetermined track of the backward movement of the second cover, because the second cover and the first cover both move backward, and at this time, the second cover does not block the movement of the first cover.

When the relative distance is greater than or equal to the preset distance information, the first cover body does not stop the second cover body from moving along the first preset track, namely, the second cover body is controlled to move along the first preset track, and the second cover body is kept in an original state and does not stop the movement of the first cover body. Therefore, the opening scheme of the cover and door assembly is determined to be that the first cover body is controlled to move along a first preset track, and the second cover body maintains an initial state.

S104: and controlling the cover door assembly to open according to the opening scheme.

After the opening scheme is determined, the cover door assembly can be controlled to be opened according to the determined opening scheme through the control module arranged on the projector device main body. For example, if the determined opening scheme is that the first cover body moves along the first preset track, the second cover body maintains the initial state, and then the cover door assembly moves along the first track according to the first cover body at the moment, and the scheme that the second cover body maintains the initial state is opened, so that the lens is exposed from the exposure hole.

According to the cover and door assembly control method, the position information of the second cover body relative to the projection device main body is obtained through the distance sensor, the opening scheme of the cover and door assembly is determined according to the position information, and the cover and door assembly is controlled to be opened. According to the cover door assembly control method, the opening of the cover door assembly can be controlled more intelligently and conveniently, and the phenomenon that the first cover body is opened to clamp the shell or fails to open due to insufficient movement space is avoided.

Although the present application has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the application, and all changes, substitutions and alterations that fall within the spirit and scope of the application are to be understood as being included within the following description of the preferred embodiment.

Claims

1. A lid assembly, comprising:

a housing provided with an exposure hole;

the first cover body is movably connected to the shell;

the second cover body is movably connected to the shell and covers the exposure hole together with the first cover body;

the first guide rail assembly is connected to the shell and comprises two first guide rail plates which are oppositely arranged, each first guide rail plate is provided with a first guide rail, each first guide rail comprises a first guide part, and the first guide parts extend towards the direction close to the shell from one end of each first guide part close to the second cover body to one end of each first guide part far away from the second cover body;

the second guide rail assembly is connected to the shell and comprises two second guide rail plates which are oppositely arranged, each second guide rail plate is provided with a third guide rail, each third guide rail comprises a third guide part, and the third guide part extends in the direction away from the shell from one end of the third guide part away from the first cover body to one end of the third guide part close to the first cover body;

the driving mechanism comprises a first transmission assembly and a second transmission assembly, the first transmission assembly is connected to the first guide rail assembly, the second transmission assembly is connected to the second guide rail assembly, the first transmission assembly is connected to the first cover body, the second transmission assembly is connected to the second cover body, and the first transmission assembly and the second transmission assembly are used for respectively guiding the first cover body and the second cover body to move so as to expose or cover the exposure hole; when the exposure hole is exposed, the first cover body and the second cover body are respectively guided by the first transmission assembly and the second transmission assembly to move along a first direction, and in a second direction perpendicular to the first direction, the first cover body and the second cover body are respectively guided by the first transmission assembly and the second transmission assembly to be away from each other.

2. The lid door assembly of claim 1, wherein the drive mechanism further comprises a first drive member and a second drive member; the first transmission assembly comprises a first gear, a first rack and a first connecting piece which are sequentially connected, and the first gear is connected with the first driving piece; the second transmission assembly comprises a second gear, a second rack and a second connecting piece which are sequentially connected, and the second gear is connected to the second driving piece.

3. The lid door assembly of claim 2, wherein the first rack gear is movably disposed to the first rail.

4. The flap assembly as recited in claim 2 wherein the first rail further comprises a first extension connected to the first guide, an end of the first extension distal from the first guide extending obliquely in a straight line toward the housing.

5. The cover door assembly as claimed in claim 2, wherein each of the first rail plates is further provided with a second rail provided between the first rail and the housing, the second rail extending obliquely in a straight line toward the housing, the first rack being selectively connected to the first rail or the second rail.

6. The lid door assembly of claim 2, wherein the second rack is movably disposed to the third rail.

7. The door assembly of claim 6, wherein the third rail further comprises a third extension connected to the third guide portion, an end of the third extension distal from the third guide portion extending obliquely in a straight line toward the housing.

8. A projection device, comprising a projection device main body and the cover door assembly as claimed in any one of claims 1 to 7, wherein the cover door assembly is connected to the projection device main body; the projection device main body comprises a lens, the exposure hole is opposite to the lens, and the cover door component selectively exposes or shields the lens.

9. The projection device of claim 8, wherein the cover door assembly further comprises a distance sensor coupled to the second cover for detecting a distance between the second cover and the projection device body; when the detected distance is smaller than the preset distance, the driving mechanism drives the first cover body and the second cover body to move.