Sliding door and projector

Abstract

The present invention relates to the technical field of projection equipment, and in particular to a sliding door device and a projector. The sliding door device comprises an upper sliding door, a lower sliding door, a driving assembly and a guiding assembly. The driving assembly is used to drive the upper sliding door to move up and down; the guiding assembly is used to make the upper sliding door move toward the lower sliding door and then be flush with the lower sliding door; or to make the upper sliding door move away from the lower sliding door; the guiding assembly comprises a guiding column arranged on the upper sliding door and a guiding member arranged on the inner side of the lower sliding door; the guiding member rotates with the up and down movement of the guiding column. The sliding door device can improve the problems of the existing sliding door structure having too many parts, complex structure, and low reliability.

Description

Technical Field

[0001] The present invention relates to the technical field of projection equipment, and in particular to a sliding door device and a projector. Background Art

[0002] As projectors are gradually accepted by ordinary consumers, users have higher requirements for projector reliability and ease of use. Manufacturers pay more and more attention to the lens protection of consumer projectors, and propose electric sliding door structures to protect the optical machine lens.

[0003] The existing sliding door system adopts a vertical slide rail system, an inclined slide rail system, a screw power system, a swing rod system and a spring system, and the submerged movement of the sliding door is realized through the above mechanism systems.

[0004] Disadvantages of the above method: This type of sliding door structure has too many parts, and requires the cooperation of various subsystems to achieve submerged movement. It has the disadvantages of complex structure, low reliability, and significant noise. Summary of the invention

[0005] The objectives of the present invention include, for example, providing a sliding door device and a projector, which can improve the existing sliding door structure problems such as too many parts, complex structure, and low reliability.

[0006] The embodiments of the present invention can be implemented as follows:

[0007] In a first aspect, the present invention provides a sliding door device, comprising:

[0008] Upper sliding door;

[0009] Slide down door;

[0010] A driving assembly, used for driving the upper sliding door to move up and down;

[0011] A guide assembly, used to move the upper sliding door toward the lower sliding door and then flush with the lower sliding door; or to move the upper sliding door away from the lower sliding door;

[0012] The guide assembly includes a guide column arranged on the upper sliding door and a guide member arranged on the inner side of the lower sliding door;

[0013] The guide member rotates as the guide column moves up and down.

[0014] The sliding door device of the present invention has an upper sliding door and a lower sliding door, wherein the driving component can drive the upper sliding door to move up and down to close or open the viewing window. When the viewing window is opened, the optical machine of the projector is turned on to perform projection operation; when the viewing window is closed, the optical machine is turned off, and the entire shell of the projector forms a sealed structure, thereby protecting the lens assembly such as the optical machine.

[0015] At the same time, the guide column of the guide assembly moves to make the guide member move with it, so that the upper sliding door moves toward the lower sliding door and is flush with the lower sliding door, so that the upper sliding door can completely close the viewing window when it moves, thereby providing the best protection for the optical machine. On the other hand, the guide assembly also makes the upper sliding door have a tendency to move away from the lower sliding door.

[0016] In summary, the sliding door device can efficiently and conveniently realize the relative movement of the upper sliding door and the lower sliding door through the coordinated cooperation of the guide component and the drive component, thereby opening or closing the viewing window; at the same time, it also achieves the beneficial effects of the upper sliding door closing the viewing window more tightly, the operation process being more gentle, and the noise being low.

[0017] In an optional embodiment, a bayonet is provided on the peripheral surface of the guide member;

[0018] When the upper sliding door is flush with the lower sliding door, the guide column is clamped in the bayonet;

[0019] During the process from the state where the sliding doors are flush with each other to the state where the sliding doors are not flush with each other, the guide column gradually separates from the bayonet.

[0020] In an optional embodiment, the sliding door device includes an elastic member;

[0021] During the gradual opening of the viewing window, the guide member is located at the first position when the guide post is disengaged from the bayonet;

[0022] When the viewing window is closed, the guide member is located at the second position;

[0023] The elastic member is connected to the guide member and is used to provide elastic force to enable the guide member to have a movement tendency of rotating from the second position to the first position.

[0024] In an optional embodiment, the elastic member includes a first end and a second end relative to each other; the first end abuts against the host, and the other end abuts against the accommodating slot of the guide member; the first end and the second end can move closer to or farther away from each other to provide elastic force.

[0025] In an optional embodiment, the angle between the first end and the second end is an obtuse angle.

[0026] In an optional embodiment, the accommodating slot extends along a preset straight line, and the accommodating slot passes through the rotation center of the guide member.

[0027] In an optional embodiment, the receiving slot includes a first portion and a second portion symmetrically distributed on both sides of the rotation center of the guide member, and the angle between the first portion and the second portion is 180°;

[0028] The first end is abutted against the first portion or the second portion.

[0029] In an optional embodiment, the driving assembly includes a driving component and a transmission component; the upper sliding door is connected to the transmission component, and the driving component drives the transmission component to move the upper sliding door up and down.

[0030] In an optional embodiment, along the height direction of the upper sliding door, the transmission component is fixedly connected to both ends of the upper sliding door respectively.

[0031] In an optional embodiment, the driving assembly further comprises a pulley, and the transmission component abuts against the pulley;

[0032] Along the height direction of the main machine, the plurality of pulleys are evenly arranged in sequence;

[0033] The distance between adjacent pulleys is S, the height of the upper sliding door is L, and 2S>L>S.

[0034] In an optional embodiment, the sliding door device further includes an in-place detection switch connected to the driving assembly;

[0035] The in-place detection switches are respectively arranged at the top and bottom of the upper sliding door, and are used to turn off the optical engine of the projector when the viewing window is closed; or to turn on the optical engine of the projector when the viewing window is opened.

[0036] In a second aspect, the present invention provides a projector, comprising:

[0037] An optical machine, a controller, a host, and a sliding door device as described in any one of the aforementioned embodiments;

[0038] The sliding door device is arranged on the host;

[0039] The controller opens or closes the optical engine according to the state of the sliding door device.

[0040] The beneficial effects of the embodiments of the present invention include, for example:

[0041] The sliding door device of the present scheme includes an upper sliding door, a lower sliding door, a driving assembly and a guiding assembly. The guiding assembly includes a guiding column arranged on the upper sliding door and a guiding member arranged on the inner side of the lower sliding door; the guiding member rotates as the guiding column moves up and down. The driving assembly can drive the upper sliding door to move up and down to close or open the viewing window. When the viewing window is closed, the shell of the entire projector forms a closed structure to provide airtight protection for lens components such as the optical machine. The guide column and the guiding member cooperate with each other so that the upper sliding door moves toward the lower sliding door and is flush with the lower sliding door, ensuring that the viewing window can be completely closed when the upper sliding door moves, thereby providing the optical machine with the best protection. In summary, the sliding door device can efficiently and conveniently realize the relative movement of the upper sliding door and the lower sliding door through the coordinated cooperation of the guiding assembly and the driving assembly, thereby opening or closing the viewing window; at the same time, the beneficial effects of the upper sliding door closing the viewing window more tightly, the operation process being more gentle, and the noise being low are also achieved.

[0042] The projector of this solution includes the above-mentioned sliding door device, and the controller is linked with the sliding door device, so that when the viewing window is opened, the optical machine automatically opens to perform projection operation; when the viewing window is closed, the optical machine automatically closes. Such a projector has a simple structure, a better reliability of the sliding door mechanism, low noise, and excellent user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0044] Figure 1 is a structural schematic diagram of a sliding door assembly according to an embodiment of the present invention;

[0045] Figure 2 It is a structural schematic diagram of the upper sliding door part of an embodiment of the present invention;

[0046] Figure 3 A schematic structural diagram of a sliding door assembly from another perspective of an embodiment of the present invention;

[0047] Figure 4 is a schematic diagram of the operation of the sliding door assembly according to an embodiment of the present invention;

[0048] Figure 5 A schematic structural diagram of a guide member according to an embodiment of the present invention;

[0049] Figure 6 It is a schematic diagram of the assembly of the guide assembly according to an embodiment of the present invention;

[0050] Figure 7Schematic diagram of the structure of the elastic member according to an embodiment of the present invention.

[0051] Icons: 10-sliding door device; 11-viewing window; 110-upper sliding door; 111-guide column; 120-lower sliding door; 200-transmission component; 300-driving assembly; 400-guide member; 410-bayonet; 411-accommodating card slot; 411a-first part; 411b-second part; 500-elastic member; 510-connecting part; 521-first end; 522-second end; 600-pulley; 710-first in-position detection switch; 720-second in-position detection switch; 20-projector; 21-host; 22-matching card slot; 22a-first slot; 22b-second slot; 23-optical machine. DETAILED DESCRIPTION

[0052] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0053] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0054] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0055] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear to indicate an orientation or position relationship, they are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the product of the invention is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0056] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0057] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0058] As projectors are gradually accepted by ordinary consumers, users have higher requirements for projector reliability and ease of use. Manufacturers pay more and more attention to the lens protection of consumer projectors, and propose electric sliding door structures to protect the optical machine lens.

[0059] The existing sliding door system adopts a vertical slide rail system, an inclined slide rail system, a screw power system, a swing rod system and a spring system to realize the submerged movement of the sliding door. However, this type of sliding door has too many structural parts and requires the cooperation of various subsystems to realize the submerged movement. It has the disadvantages of complex structure, low reliability and significant noise.

[0060] In order to improve the above technical problems, a sliding door device and a projector are provided in the following embodiments to improve the existing sliding door structure, such as too many parts, complex structure, and low reliability.

[0061] Please refer to Figure 1 and Figure 2 The present embodiment provides a sliding door device 10, including an upper sliding door 110, a lower sliding door 120, a driving assembly 300 and a guiding assembly.

[0062] The driving assembly 300 is used to drive the upper sliding door 110 to move up and down;

[0063] The guide assembly is used to move the upper sliding door 110 toward the lower sliding door 120 and then make it flush with the lower sliding door 120; or to move the upper sliding door 110 away from the lower sliding door 120;

[0064] The guide assembly includes a guide post 111 disposed on the upper sliding door 110 and a guide member 400 disposed on the inner side of the lower sliding door 120;

[0065] The guide member 400 rotates as the guide column 111 moves up and down.

[0066] The sliding door device 10 of the present solution has an upper sliding door 110 and a lower sliding door 120, wherein the driving assembly 300 can drive the upper sliding door 110 to move up and down to close or open the viewing window 11. When the viewing window 11 is opened, the optical engine 23 of the projector 20 is turned on for projection operation; when the viewing window 11 is closed, the optical engine 23 is turned off, and the housing of the host 21 of the entire projector 20 forms a sealed structure, thereby protecting the lens assembly such as the optical engine 23.

[0067] At the same time, the guide post 111 of the guide assembly moves to make the guide member 400 move accordingly, so that the upper sliding door 110 moves toward the lower sliding door 120 and then becomes flush with the lower sliding door 120, so that the upper sliding door 110 can completely close the viewing window 11 when it moves, thereby providing the best protection for the alignment machine 23. On the other hand, the guide assembly also makes the upper sliding door 110 have a tendency to move away from the lower sliding door 120.

[0068] The sliding door device 10 can efficiently and conveniently realize the relative movement of the upper sliding door 110 and the lower sliding door through the coordinated cooperation of the guide component and the drive component 300, thereby opening or closing the viewing window 11; at the same time, the beneficial effects of the upper sliding door 110 closing the viewing window 11 more tightly, the operation process being more gentle, and the noise being low are achieved.

[0069] It should be noted that the guide assembly is used to make the upper sliding door 110 move towards the lower sliding door 120 and then be flush with the lower sliding door 120. The flushness here includes the situation that the lower part of the upper sliding door 110 and the top of the lower sliding door 120 are parallel to each other and located in the same plane. Specifically, the distance between the lower part of the upper sliding door 110 and the top of the lower sliding door 120 can be zero or within an error range of 0-5cm.

[0070] See also Figures 1 to 7 In order to more clearly illustrate the specific solution of the present invention, the sliding door device 10 will be described in detail below and illustrated with drawings.

[0071] from Figure 1 It can be seen that in this embodiment, the housing of the main unit 21 of the projector 20 is a rectangular barrel structure. That is, along the extension direction of the annular barrel wall of the barrel structure, one end of the hollow square barrel is closed and the other end has an open mouth.

[0072] The sliding door 120 is arranged at the lower side of the opening and closes the lower part of the opening. Optionally, the sliding door 120 is a rectangular plate, and the three straight sides of the sliding door 120 are connected to the annular cylinder wall of the main unit 21. And the side surface of the sliding door 120 away from the main body is flush with the surface of the opening. In this embodiment, the sliding door 120 is integrally formed with the shell of the main unit 21.

[0073] Furthermore, the upper end of the sliding door 120 and the edge of the opening are combined to form a viewing window 11 through which the optical machine 23 projects an image.

[0074] During the process of closing and opening the viewing window 11, the upper sliding door 110 is located on the side of the lower sliding door 120 close to the host 21. When the viewing window 11 is completely closed and the upper sliding door 110 is flush with the lower sliding door 120, the upper sliding door 110, the lower sliding door 120 and the open opening are all located on the same plane. In this way, the projector 20 has a complete and neat appearance, ensuring the aesthetic appearance of the projector 20.

[0075] like Figure 1 and Figure 2 As shown, in this embodiment, the driving assembly 300 includes a driving component and a transmission component 200; the upper sliding door 110 is connected to the transmission component 200, and the driving component drives the transmission component 200 to move the upper sliding door 110 up and down.

[0076] Furthermore, along the height direction of the upper sliding door 110 , the transmission component 200 is fixedly connected to both ends of the upper sliding door 110 .

[0077] Optionally, the driving component is a tubular motor, and the transmission component 200 is a transmission belt. In this embodiment, the sliding door device 10 has two tubular motors and two transmission belts. Along the height direction of the main machine 21, the two tubular motors are respectively arranged inside the main machine 21. And the tubular motor and the downward sliding door 120 are parallel to each other.

[0078] The two transmission belts are respectively located on both sides of the width direction of the main machine 21. One end of each transmission belt is connected to the tubular motor located at the top of the main machine 21, and the other end is connected to the tubular motor located at the bottom of the main machine 21. The upper sliding door 110 is fixed on the transmission belt.

[0079] The two tubular motors provide power to drive the transmission belt to rise and fall respectively, thereby driving the upper sliding door 110 connected to the transmission belt to rise and fall.

[0080] Furthermore, in this embodiment, along the width direction of the main unit 21, the two sides of the upper sliding door 110 are respectively locked with two transmission belts by screws. At the same time, the two transmission belts are glued to the back of the upper sliding door 110 and fixed tightly, so as to ensure that the transmission belts and the upper sliding door 110 move up and down stably.

[0081] When in use, the transmission belt is wound around the rotating shaft of the tubular motor and is tensioned through the cooperation of the upper and lower tubular motors. The tubular motor drives the transmission belt to achieve up and down movement.

[0082] The tubular motor and the transmission belt cooperate with each other, making full use of the characteristics of the tubular motor, which is compact, small in size, low in working noise, and reliable in structure; and taking advantage of the belt transmission's good elasticity, which can mitigate impact and vibration during operation, and has stable and noiseless movement, simple structure, easy manufacturing, convenient installation and maintenance, and low cost. In this way, the sliding door device 10 of this solution improves the shortcomings of the prior art, such as complex structure, low reliability, and significant noise.

[0083] It can be understood that in other embodiments of the present invention, the driving component can also be a linear motor, a nut screw, etc., and the transmission component 200 can also be a transmission gear, a transmission screw, etc. This is just an example and is not limited to it. As long as the driving component 300 can drive the upper sliding door 110 to move up and down to close or open the viewing window 11, it will be fine.

[0084] from Figure 1 It can also be seen that the driving assembly 300 further includes a pulley 600 , and the transmission component 200 is supported on the pulley 600 ; along the height direction of the main machine 21 , a plurality of pulleys 600 are evenly arranged in sequence.

[0085] Specifically, in this embodiment, the driving assembly 300 includes 10 pulleys 600. Five pulleys 600 form a group, and two groups of pulleys 600 are respectively arranged on the two side walls in the width direction of the main machine 21. The pulleys 600 can support the movement of the transmission belt, so that the transmission belt and the upper sliding door 110 arranged on the transmission belt can accurately move along the preset track. Furthermore, the transmission belt is guided by the pulleys 600 to prevent the transmission belt from shaking. At the same time, during the movement of the upper sliding door 110, the transmission belt is tensioned by the tubular motor to be close to the pulleys 600, thereby ensuring the stability of the lifting and lowering of the upper sliding door 110.

[0086] Furthermore, along the height direction of the main unit 21, the distance between adjacent pulleys 600 is S, the height of the upper sliding door 110 is L, and 2S>L>S. This arrangement can prevent the upper sliding door 110 from vibrating during movement and ensure the low noise characteristic of the sliding door device 10.

[0087] from Figures 1 to 3 It can also be seen that the guide posts 111 are two cylindrical members arranged at the bottom of the upper sliding door 110. Along the width direction of the host 21, the two cylindrical members are respectively arranged on both sides of the upper sliding door 110, and the extension direction of the cylindrical members is consistent with the plane direction of the door panel of the upper sliding door 110.

[0088] Furthermore, the sliding door device 10 also includes an in-position detection switch connected to the driving assembly 300; the in-position detection switch is respectively arranged at the top and bottom of the upper sliding door 110, and is used to turn off the optical engine 23 of the projector 20 when the viewing window 11 is closed; or to turn on the optical engine 23 of the projector 20 when the viewing window 11 is opened.

[0089] Specifically, the switch located on the upper side of the upper sliding door 110 is named the first in-position detection switch 710, and the switch located on the lower side of the upper sliding door 110 is named the second in-position detection switch 720. When the upper sliding door 110 reaches the upper and lower limit positions, the first in-position detection switch 710 is triggered, the tubular motor stops running, and the position of the upper sliding door 110 is fixed.

[0090] Please continue reading Figures 1 to 7 As can be seen from the figure, a bayonet 410 is provided on the circumferential surface of the guide member 400; when the upper sliding door 110 is flush with the lower sliding door 120, the guide column 111 is engaged with the bayonet 410; in the process from the state where the lower sliding door 120 is flush with the lower sliding door 120 to the state where the lower sliding door 120 is not flush with the lower sliding door 120, the guide column 111 gradually disengages from the bayonet 410.

[0091] Furthermore, the guide member 400 is a cylindrical and flat round wheel. The bayonet 410 is arranged on the circumference of the round wheel. When the upper sliding door 110 is in the process of going up and down, the guide posts 111 located on the left and right sides of the bottom of the upper sliding door 110 are engaged with the bayonet 410, and the guide member 400 rotates to realize the upper sliding door 110 to be retracted and extended in a submerged manner. The bayonet 410 extends in the radial direction, and the bayonet 410 passes through the round wheel in the axial direction.

[0092] Optionally, the angle between the bayonet 410 of the guide member 400 and the vertical direction is 0-60°, and the angle between the upper sliding door 110 and the vertical direction is 0-10°. In this embodiment, the angle between the bayonet 410 of the guide member 400 and the vertical direction is 30°, and the angle between the upper sliding door 110 and the vertical direction is 2°.

[0093] It can also be seen from the figure that the sliding door device 10 includes an elastic member 500; when the viewing window 11 gradually opens, the guide member 400 is located in the first position when the guide column 111 disengages from the bayonet 410; when the viewing window 11 is closed, the guide member 400 is located in the second position; the elastic member 500 is connected to the guide member 400 to provide an elastic force so that the guide member 400 has a movement tendency to rotate from the second position to the first position.

[0094] Furthermore, the elastic member 500 includes a first end 521 and a second end 522 opposite to each other; the first end 521 is abutted against the matching slot 22 of the host 21, and the other end is abutted against the accommodating slot 411 of the guide member 400; the first end 521 and the second end 522 can be close to or away from each other to provide elastic force.

[0095] Optionally, the first end 521 is connected to the second end 522 via the connecting portion 510. The angle between the first end 521 and the second end 522 can be an obtuse angle or an acute angle (just need to match the hole on the host housing), and in this embodiment, it is preferably 180°.

[0096] It can also be seen from the figure that in this embodiment of the present invention, the accommodating slot 411 extends along a preset straight line, and the accommodating slot 411 passes through the rotation center of the guide member 400 .

[0097] Furthermore, the accommodating slot 411 includes a first portion 411a and a second portion 411b symmetrically distributed on both sides of the rotation center of the guide member 400, and the angle between the first portion 411a and the second portion 411b is 180°; the first end 521 abuts against the first portion 411a or the second portion 411b.

[0098] Specifically, the matching slot 22 includes a first slot 22a and a second slot 22b that are symmetrically arranged; the angle between the first slot 22a and the second slot 22b is 45°; and the second end 522 abuts against the first slot 22a or the second slot 22b.

[0099] It should be noted that, in this embodiment, the elastic member 500 is a return torsion spring.

[0100] One end of the reset torsion spring is inserted into the matching slot 22 of the side wall of the main unit 21, and the other end is inserted into the receiving slot 411 of the guide member 400. The guide member 400 and the reset torsion spring are fixed to the main unit 21 by screws, and the angle of the guide member 400 snap-in 410 is locked. After the upper sliding door 110 moves downward until the guide column 111 is out of the snap-in 410, the guide member 400 is reset under the torsion of the reset torsion spring, and is ready for the next upward guidance of the upper sliding door 110.

[0101] When the projector 20 is in the off state, the upper and lower sliding doors 120 are on the same plane, which has a more complete appearance than a single sliding door solution.

[0102] like Figure 4 When it is necessary to start the machine, the tubular motor starts, the transmission belt drives the upper sliding door 110 to move downward, and the guide member 400 constrains the lower movement trajectory of the upper sliding door 110 to move inward while restraining the lower movement trajectory of the upper sliding door 110, so that the upper sliding door 110 can sneak into the lower sliding door 120 and will not be stuck by the lower sliding door 120; the upper sliding door 110 continues to move downward, the guide column 111 escapes from the guide member 400, and the guide member 400 is reset downward under the action of the torsion spring; after moving to the lower limit position, the second in-position detection switch 720 is triggered to give a signal, the controller controls the tubular motor to stop moving, and the optical path part of the projector 20 starts playing.

[0103] like Figure 4When shutdown is required, the optical path part is shut down first, and the tubular motor moves in the reverse direction, driving the upper sliding door 110 to move upward, and the guide column 111 of the upper sliding door 110 moves to the position of the bayonet 410 of the guide member 400, and the guide column 111 is snapped into the bayonet 410 of the guide member 400, and the guide member 400 constrains the lower movement trajectory of the upper sliding door 110 to move upward while moving outward, so as to realize the diving movement of the upper sliding door 110 and finally be flush with the lower sliding door 120; after reaching this position, the first in-position detection switch 710 is triggered, giving a signal to control the tubular motor to stop moving, thereby realizing shutdown.

[0104] In a second aspect, the present invention provides a projector 20, comprising an optical engine 23, a controller, a host 21 and a sliding door device 10 of any one of the aforementioned embodiments; the sliding door device 10 is arranged on the host 21; the controller opens or closes the optical engine 23 according to the state of the sliding door device 10.

[0105] In summary, the embodiment of the present invention provides a sliding door device 10 and a projector 20, which have at least the following advantages:

[0106] 1. The combination of the pulley 600 transmission system and the guide member 400 can realize the submerged retraction and extension of the upper sliding door 110, and has fewer parts and a simple and reliable structure.

[0107] 2. The pulley 600 transmission system has low noise, fewer mechanical failures, and better user experience.

[0108] 3. The automatic sliding door system can protect the optical path of the projector 20.

[0109] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A sliding door device, characterized in that: include: Upper sliding door (110); Downward sliding door (120); A driving assembly (300) for driving the upper sliding door (110) to move up and down; A guide assembly, used to enable the upper sliding door (110) to move toward the lower sliding door (120) and then be flush with the lower sliding door (120); or to enable the upper sliding door (110) to move away from the lower sliding door (120); The guide assembly comprises a guide column (111) arranged on the upper sliding door (110) and a guide member (400) arranged on the inner side of the lower sliding door (120); The guide member (400) rotates as the guide column (111) moves up and down; a bayonet (410) is provided on the peripheral surface of the guide member (400); When the upper sliding door (110) is flush with the lower sliding door (120), the guide column (111) is engaged with the bayonet (410); During the process from the state where the upper sliding door (110) and the lower sliding door (120) are flush with each other to the state where the upper sliding door (110) and the lower sliding door (120) are not flush with each other, the guide column (111) gradually disengages from the bayonet (410).

2. The sliding door device according to claim 1, characterized in that: The sliding door device comprises an elastic member (500); During the gradual opening of the viewing window (11), when the guide post (111) is disengaged from the bayonet (410), the guide member (400) is located at the first position; When the viewing window (11) is closed, the guide member (400) is located at a second position; The elastic member (500) is connected to the guide member (400) and is used to provide elastic force so that the guide member (400) has a movement tendency to rotate from the second position to the first position.

3. The sliding door device according to claim 2, characterized in that: The elastic member (500) comprises a first end (521) and a second end (522) opposite to each other; the first end (521) is abutted against the host (21), and the other end is abutted against the receiving slot (411) of the guide member (400); the first end (521) and the second end (522) can be moved closer to or farther from each other to provide elastic force.

4. The sliding door device according to claim 3, characterized in that: The included angle between the first end (521) and the second end (522) is an obtuse angle.

5. The sliding door device according to claim 3, characterized in that: The accommodating card slot (411) extends along a preset straight line, and the accommodating card slot (411) passes through the rotation center of the guide member (400).

6. The sliding door device according to claim 3, characterized in that: The receiving slot (411) comprises a first part (411a) and a second part (411b) symmetrically distributed on both sides of the rotation center of the guide member (400), and the angle between the first part (411a) and the second part (411b) is 180°; The first end (521) abuts against the first portion (411a) or the second portion (411b).

7. The sliding door device according to any one of claims 1 to 6, characterized in that: The driving assembly (300) comprises a driving component and a transmission component (200); the upper sliding door (110) is connected to the transmission component (200), and the driving component drives the transmission component (200) to make the upper sliding door (110) move up and down.

8. The sliding door device according to claim 7, characterized in that: Along the height direction of the upper sliding door (110), the transmission component (200) is fixedly connected to both ends of the upper sliding door (110) respectively.

9. The sliding door device according to claim 8, characterized in that: The driving assembly (300) further comprises a pulley (600), and the transmission component (200) is supported on the pulley (600); Along the height direction of the main machine (21), the plurality of pulleys (600) are evenly arranged in sequence; The distance between adjacent pulleys (600) is S, the height of the upper sliding door (110) is L, and 2S>L>S.

10. The sliding door device according to claim 1, characterized in that: The sliding door device also includes an in-position detection switch connected to the driving assembly (300); The in-position detection switches are respectively arranged at the top and bottom of the upper sliding door (110), and are used to turn off the optical engine (23) of the projector (20) when the viewing window (11) is closed; or to turn on the optical engine (23) of the projector (20) when the viewing window (11) is opened.

11. A projector, characterized in that: include: An optical machine (23), a controller, a host (21), and a sliding door device according to any one of claims 1 to 10; The sliding door device is arranged on the main machine (21); The controller opens or closes the optical engine (23) according to the state of the sliding door device.

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