Adjustable electric fireplace

Abstract

The invention discloses an adjustable electric fireplace and relates to the technical field of electric fireplaces, the adjustable electric fireplace comprises a shell assembly, a projection screen assembly, a first lifting assembly and a decoration assembly, the shell assembly comprises a front cover plate and a box shell with an opening in the front side, and the front cover plate is detachably and fixedly connected to the opening; the projection screen assembly is obliquely arranged in the box shell, and the rear end of the projection screen assembly is movably connected with the rear upper part of the shell assembly; the front end of the projection screen assembly extends towards the lower front part of the shell assembly; the lifting assembly I is connected or contacted with the front end of the projection screen assembly; the decoration assembly is arranged in the shell assembly and is arranged behind the projection screen assembly; the first lifting assembly can drive the front end of the projection screen assembly to ascend so that the decoration assembly can pass through the space between the projection screen assembly and the inner bottom wall of the opening. When the output end of the first lifting assembly descends, the front end of the projection screen assembly can descend synchronously. The decoration assembly can be conveniently replaced, and the customizability and the long-term use interestingness of the product are enhanced.

Description

Technical Field

[0001] This invention relates to the field of electric fireplace technology, and in particular to an adjustable electric fireplace. Background Technology

[0002] Holographic electric fireplaces, as a modern home decoration and ambiance-creating device, have gained widespread application in recent years. A typical holographic electric fireplace includes an imaging screen at the top of the unit and a transparent projection screen at the front. The transparent projection screen refracts the light emitted from the top imaging screen, creating a three-dimensional and dynamic image of flames from the user's perspective. To enhance the realism and aesthetics of the scene, decorative artificial firewood, simulated charcoal blocks, or other decorations are usually placed behind the projection screen, combining with the flame image to form a complete visual scene of the fireplace.

[0003] Electric fireplaces are mostly installed by embedding them into walls or wooden cabinets. In current common designs, the transparent projection screen of electric fireplaces is mostly a fixed installation structure, which forms an integral and non-removable whole with the fireplace shell. Once the electric fireplace is embedded in the wall or custom cabinet, users cannot easily replace the decorative artificial firewood behind it or add other decorations, which reduces the customizability and long-term enjoyment of the product and results in a poor user experience. Summary of the Invention

[0004] The purpose of this invention is to provide an adjustable electric fireplace to solve the problems existing in the prior art, which allows for easy replacement of the decorative components behind the projection screen assembly, thereby enhancing the product's customizability and long-term usability.

[0005] To achieve the above objectives, the present invention provides the following solution: This invention provides an adjustable electric fireplace, comprising a housing assembly, a projection screen assembly, a lifting assembly, and a decorative assembly, wherein: The housing assembly includes a front cover and a housing with an opening on the front side, the front cover being detachably fixed to the opening of the housing; The projection screen assembly is tilted inside the housing, and the rear end of the projection screen assembly is movably connected to the upper rear of the housing assembly; when the projection screen assembly is projecting, the front end of the projection screen assembly extends towards the lower front of the housing assembly. The lifting component is connected to or in contact with the front end of the projection screen component; The decorative component is disposed inside the housing component and behind the projection screen component; the lifting component can drive the front end of the projection screen component to rise, so that the decorative component can pass between the front end of the projection screen component and the inner bottom wall of the opening; when the output end of the lifting component descends, the front end of the projection screen component can descend synchronously.

[0006] Preferably, the lifting assembly includes two lead screws, two lifters, and a drive device. Each lead screw is arranged along the height direction of the housing assembly and is rotatably connected to the housing assembly. Each lifter includes a lifting base and a limiting member fixedly connected to the lifting base. The two lifting bases are threadedly connected to the two lead screws respectively. The front end of the projection screen assembly contacts the upper surface of the two lifting bases. Each limiting member can contact the front end of the projection screen assembly and restrict the projection screen assembly from moving towards the opening direction. The drive device can drive the two lead screws to rotate in the same direction along their own axes.

[0007] Preferably, the system further includes two elastic components and two sliders. Both sliders are movably connected to the rear end of the projection screen assembly and slidably connected to the housing assembly. One end of each elastic component is fixedly connected to the housing assembly, and the other end of each elastic component is fixedly connected to the two sliders. When the lifting assembly raises the front end of the projection screen assembly, each slider moves relative to the housing assembly in a direction away from the opening. When the lifting assembly lowers the front end of the projection screen assembly, each elastic component applies a force to the projection screen assembly in the direction of the opening. Under the weight of the projection screen assembly and the force of the elastic components, the slider moves relative to the housing assembly in a direction closer to the opening, and the projection screen assembly remains in contact with the upper surface of the lifting base.

[0008] Preferably, it also includes a screen, which is initially positioned on top of the housing assembly; the angle between the projection screen assembly and the screen can be adjusted by raising or lowering the front end of the projection screen assembly, and the angle between the projection screen assembly and the screen is in the range of 0~50°.

[0009] Preferably, the housing assembly further includes a screen fixing component, a second lifting component, and a connecting component. The screen fixing component is disposed on the top of the housing; the screen is fixedly connected to the screen fixing component and disposed on the lower surface of the screen fixing component; the side of the projection screen assembly away from the opening is movably connected to the side of the screen fixing component away from the opening; the connecting component can connect the side of the projection screen assembly near the opening to the side of the screen fixing component near the opening; the second lifting component is movably connected to the side of the screen fixing component away from the opening, and the second lifting component can drive the side of the screen fixing component away from the opening to rise and fall to change the tilt angle of the screen fixing component relative to the horizontal plane.

[0010] Preferably, the device further includes a second driving device. The screen fixing assembly includes a screen fixing plate, a track structure, and a gear assembly. There are two track structures, each fixedly connected to the housing assembly. There is at least one gear assembly. Each track structure extends from the side closest to the opening to the side furthest from the opening, and at least one track structure is provided with rack teeth. The two ends of the screen fixing plate near the opening are respectively movably connected to the two track structures. At least one end of the screen fixing plate near the opening is provided with the gear assembly, and the gear assembly meshes with the rack teeth of the track structure on the corresponding side. The second driving device is connected to the gear assembly. The second driving device can drive each gear assembly to rotate around the axis of the corresponding gear assembly, so that the side of the screen fixing plate closest to the opening moves along the track structure.

[0011] Preferably, the lifting assembly two includes a driving device three, two lead screws two, and two connecting blocks. Each lead screw two is rotatably connected to the housing assembly. The lead screw two is connected to the driving device three, and the driving device three can drive each lead screw two to rotate around the axis of the corresponding lead screw two. The two connecting blocks are respectively threaded to the two lead screws two. The two ends of the screen fixing assembly on the side away from the opening are respectively rotatably connected to the two connecting blocks.

[0012] Preferably, the connecting component includes a connecting body, the upper end of which is connected to the screen fixing plate and is capable of rotating about a vertical axis relative to the screen fixing plate, and the lower end of the connecting body is provided with a slot; the connecting body is capable of rotating about the vertical axis under the action of an external force, and the end of the screen fixing plate near the opening and the end of the projection screen assembly near the opening are inserted into the slot.

[0013] Preferably, the connecting assembly further includes a second elastic component, one end of which is fixedly connected to the screen fixing plate, and the other end of which is connected to the connecting body; a middle plate assembly is provided between the top plate and the screen fixing assembly, and a limiting plate is provided on the middle plate assembly; when the screen fixing plate is in the initial position at the top of the housing assembly, the limiting plate can abut against the connecting body and make the slot of the card slot face a direction perpendicular to the length direction of the track structure; when the screen fixing plate is in the initial position at the top of the housing assembly, the second elastic component is in a compressed state; when the gear assembly moves along the track structure in a direction away from the opening, the second elastic component can push the connecting body to rotate and make the end of the screen fixing plate near the opening and the end of the projection screen assembly near the opening extend into the card slot.

[0014] Preferably, the second driving device can drive each of the gear assemblies to move along the corresponding track structure in a direction away from the opening so that the screen switches to a vertical state; when the screen is in the vertical state, the screen is perpendicular to the bottom plate of the housing assembly; the second driving device can drive each of the gear assemblies to move along the corresponding track structure in a direction closer to the opening so that the screen switches from the vertical state to the initial state.

[0015] The present invention achieves the following technical effects compared to the prior art: This invention provides an adjustable electric fireplace, comprising a housing assembly, a projection screen assembly, a lifting assembly, and a decorative assembly. The housing assembly includes a front cover and a casing with an opening on the front side. The front cover is detachably fixed to the opening of the casing. The projection screen assembly is inclinedly disposed within the casing, and its rear end is movably connected to the upper rear of the housing assembly. When projecting, the front end of the projection screen assembly extends downward and forward toward the housing assembly. The lifting assembly is connected to or in contact with the front end of the projection screen assembly. The decorative assembly is disposed within the housing assembly and behind the projection screen assembly. The lifting assembly can lift the front end of the projection screen assembly, allowing the decorative assembly to pass between the front end of the projection screen assembly and the inner bottom wall of the opening. When the output end of the lifting assembly descends, the front end of the projection screen assembly descends synchronously.

[0016] After removing the front cover, the rear end of the projection screen assembly is movably connected to the housing assembly. The lifting assembly raises the front end of the projection screen assembly, changing its tilt angle and increasing the gap between the front end of the projection screen assembly and the inner bottom wall of the opening. This allows for easy replacement of the decorative components behind the projection screen assembly, enhancing the product's customizability and long-term usability. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 An exploded view of the adjustable electric fireplace provided by the present invention; Figure 2 A partial structural diagram of the adjustable electric fireplace provided in Example 1 Figure 1 ; Figure 3 for Figure 2 Enlarged view of A in the middle; Figure 4 for Figure 2Enlarged view of B in the middle; Figure 5 A partial structural diagram of the adjustable electric fireplace provided in Example 1 Figure 2 ; Figure 6 A partial structural diagram of the adjustable electric fireplace provided in Example 1 Figure 3 ; Figure 7 for Figure 6 Enlarged view of C; Figure 8 for Figure 6 Enlarged view of D; Figure 9 This is a schematic diagram of the adjustable electric fireplace provided in Example 1; Figure 10 A partial structural diagram of the adjustable electric fireplace provided in Example 1 Figure 4 ; Figure 11 This is a schematic diagram of the structure of the lifting device provided by the present invention; Figure 12 This is a structural diagram of the projection screen assembly in its working position; Figure 13 A structural diagram of the projection screen assembly during the adjustment process. Figure 1 ; Figure 14 A structural diagram of the projection screen assembly during the adjustment process. Figure 2 ; Figure 15 A partial structural diagram of the adjustable electric fireplace provided in Example 2 Figure 1 ; Figure 16 A partial structural diagram of the adjustable electric fireplace provided in Example 2 Figure 2 ; Figure 17 A partial structural diagram of the adjustable electric fireplace provided in Example 2 Figure 3 ; Figure 18 A partial structural diagram of the adjustable electric fireplace provided in Example 2 Figure 4 ; Figure 19 for Figure 18 Enlarged view of E in the middle; Figure 20 This is a schematic diagram of the screen fixing plate and its components provided in Embodiment 2. Figure 21 for Figure 20 Enlarged view of F in the middle; Figure 22 A partial structural diagram of the adjustable electric fireplace provided in Example 2 Figure 5 ; Figure 23 This is a schematic diagram of the screen during the adjustment process in Example 2; Figure 24 This is a schematic diagram of the screen being adjusted to be perpendicular to the base plate in Example 2; Figure 25 for Figure 23 Enlarged view of G in the middle; Figure 26 for Figure 10 Enlarged view of H in the middle; In the diagram: 100. Adjustable electric fireplace; 1. Shell assembly; 101. Front cover; 102. Housing; 103. Opening; 104. Screen fixing assembly; 105. Lifting assembly II; 106. Connecting assembly; 107. Limiting strip; 108. Lead screw II; 109. Screen fixing plate; 110. Track structure; 111. Gear assembly; 112. Slot; 113. Connecting body; 114. Elastic component II; 115. Top plate; 116. Outer side plate; 117. Rear plate; 118. Bottom plate; 119. Partition assembly; 120. Inner side plate; 121. Rack; 122. Connecting block; 2. Projection screen assembly; 3. Lifting assembly one; 301. Lead screw one; 302. Lifting device; 303. Drive device one; 304. Lifting base; 305. Limiting component; 306. Base one; 307. Base two; 308. Connecting rod one; 309. Connecting rod two; 4. Decorative components; 5. Elastic component one; 6. Slider; 7. Screen; 8. Drive device two; 9. Middle plate assembly; 901. Limiting plate. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] It should be noted that in the description of this invention, the terms "upper," "lower," "left," "right," "inner," "outer," "front," "rear," "center," "longitudinal," "transverse," "length," "width," "thickness," "vertical," "horizontal," "top," "bottom," "clockwise," and "counterclockwise," etc., indicating directional or positional relationships, are based on the directional or positional relationships shown in the accompanying drawings. These are merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Additionally, it should be noted that in the description of this invention, unless otherwise explicitly specified and limited, the terms "set," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or a connection within two elements. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0021] The purpose of this invention is to provide an adjustable electric fireplace to solve the problems existing in the prior art, which allows for easy replacement of the decorative components behind the projection screen assembly, thereby enhancing the product's customizability and long-term usability.

[0022] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] Example 1 like Figures 1-26 As shown, this embodiment provides an adjustable electric fireplace 100, including a housing assembly 1, a projection screen assembly 2, a lifting assembly 3, and a decorative assembly 4, wherein: The housing assembly 1 includes a front cover plate 101 and a housing 102 with an opening 103 on the front side. The front cover plate 101 is detachably fixed to the opening 103 of the housing 102. The projection screen assembly 2 is tilted inside the housing 102. The rear end of the projection screen assembly 2 is movably connected to the upper rear of the housing assembly 1. When the projection screen assembly 2 is projecting, the front end of the projection screen assembly 2 extends towards the lower front of the housing assembly 1. The lifting component 3 is connected to or in contact with the front end of the projection screen component 2; Decorative component 4 is disposed inside housing component 1 and behind projection screen component 2; lifting component 3 can drive the front end of projection screen component 2 to rise, so that decorative component 4 can pass between the front end of projection screen component 2 and the inner bottom wall of opening 103; when the output end of lifting component 3 descends, the front end of projection screen component 2 can descend synchronously.

[0024] After removing the front cover 101, the rear end of the projection screen assembly 2 is movably connected to the housing assembly 1. The front end of the projection screen assembly 2 is raised by the lifting assembly 3, changing the tilt angle of the projection screen assembly 2 and increasing the gap between the front end of the projection screen assembly 2 and the inner bottom wall of the opening 103. This allows for easy replacement of the decorative assembly 4 behind the projection screen assembly 2, enhancing the product's customizability and long-term usability.

[0025] It should be noted that the end of the housing assembly 1 with the opening 103 is the front end of the housing 102, and the end of the housing assembly 1 away from the opening 103 is the rear end of the housing 102.

[0026] In some embodiments, the lifting assembly 3 includes two lead screws 301, two lifters 302, and a drive device 303. Each lead screw 301 is arranged along the height direction of the housing assembly 1 and is rotatably connected to the housing assembly 1. Each lifter 302 includes a lifting base 304 and a limiting member 305 fixedly connected to the lifting base 304. The two lifting bases 304 are threadedly connected to the two lead screws 301 respectively. The front end of the projection screen assembly 2 contacts the upper surface of the two lifting bases 304. Each limiting member 305 can contact the front end of the projection screen assembly 2 and restrict the projection screen assembly 2 from moving towards the opening 103. The drive device 303 can drive the two lead screws 301 to rotate in the same direction along their own axes. When the lifter 302 is lowered to the lowest point, the front end of the projection screen assembly 2 will not slip off from the bottom under the action of the limiting member 305. The drive unit 303 drives the two lead screws 301 to rotate, converting the rotation of the two lead screws 301 into the linear motion of the two lifting bases 304, thereby driving the front end of the projection screen assembly 2 to rise and fall.

[0027] In some embodiments, it also includes two elastic members 5 and two sliders 6, such as Figure 4As shown, both sliders 6 are movably connected to the rear end of the projection screen assembly 2, and both sliders 6 are slidably connected to the housing assembly 1; one end of each elastic component 5 is fixedly connected to the housing assembly 1, and the other end of each elastic component 5 is fixedly connected to the two sliders 6 respectively; when the lifting assembly 3 drives the front end of the projection screen assembly 2 to rise, each slider 6 can move relative to the housing assembly 1 in a direction away from the opening 103; when the lifting assembly 3 drives the front end of the projection screen assembly 2 to fall, each elastic component 5 can apply a force to the projection screen assembly 2 in the direction of the opening 103. Under the gravity of the projection screen assembly 2 and the force of the elastic component 5, the sliders 6 can move relative to the housing assembly 1 in a direction closer to the opening 103, and the projection screen assembly 2 can maintain contact with the upper surface of the lifting base 304, so that the front end of the projection screen assembly 2 falls with the lifting base 304. When the projection screen assembly 2 falls to the working position for projection, the visual baseline of the virtual flame of the projection screen assembly 2 and the decorative component 4 achieve spatial visual overlap.

[0028] In some embodiments, a screen 7 is also included, which is initially positioned on top of the housing assembly 1; the angle between the projection screen assembly 2 and the screen 7 can be adjusted by raising or lowering the front end of the projection screen assembly 2, and the angle between the projection screen assembly 2 and the screen 7 is in the range of 0~50°.

[0029] In some embodiments, a heating system is also included, which is fixedly connected to the top of the housing assembly 1.

[0030] In some embodiments, a groove structure with an opening 103 facing the rear of the housing assembly 1 is formed between the limiting member 305 and the lifting base 304. The inner bottom wall of the groove structure is arc-shaped, and the inner edge of the limiting member 305 at the end away from the inner bottom wall of the groove structure is rounded, forming a rounded corner guide structure. The front end of the projection screen assembly 2 can slide relative to the upper surface of the lifting base 304. Figure 7 As shown, at least part of the front end of the projection screen assembly 2 can extend into the slot structure.

[0031] In some embodiments, the projection element of the projection screen assembly 2 is made of transparent material, and the front end of the projection screen assembly 2 has no fixed structure and is supported by its own weight on the upper surface (which is flat) of the lifting base 304.

[0032] In some embodiments, the projection screen assembly 2 has a through hole at its rear end, and one end of the slider 6 is disposed in the through hole and rotatably connected to the projection screen assembly 2, so that the projection screen assembly 2 can swing back and forth.

[0033] In some embodiments, the housing 102 includes a top plate 115, outer side plates 116, a rear plate 117, and a bottom plate 118. The front cover plate 101, top plate 115, outer side plates 116, rear plate 117, and bottom plate 118 are fixedly connected and assembled to form an outer shell. The housing 102 also includes a partition assembly 119 disposed within the outer shell, with inner side plates 120 as the side plates. A lead screw 301 is disposed in the gap between the inner side plate 120 and the outer side plate 116. Each inner side plate 120 has a limiting strip 107 extending axially along the lead screw 301 on the side near the opening 103. The lifting base 304 includes a first base 306, a second base 307, a first connecting rod 308, and a second connecting rod 309. Both ends of the first connecting rod 308 are fixedly connected to one end of the first base 306 and one end of the second connecting rod 309, respectively. The other end of the second connecting rod 309 is fixedly connected to one end of the second base 307. The other ends of both the first base 306 and the second base 307 extend away from the opening 103. The first connecting rod 308 and the second connecting rod 309 form an L-shaped connecting rod. A gap of 1 is left between the first base 306 and the second base 307 along the length of the first connecting rod 308. A limiting member 305 is fixedly connected to the end of the first base 306 near the opening 103, forming a groove structure. The end of the second base 307 away from the opening 103 is threadedly connected to a lead screw 301. The inner side plate 120 is positioned within gap one near the opening 103, and the limiting strip 107 is positioned within gap two between connector one and base two 307. Gap one and gap two are L-shaped as a whole. The inner side wall of connector one near base two 307 can contact the side wall of limiting strip 107 away from base two 307, and the side wall of inner side plate 120 can contact the side wall of base one 306 and / or base two 307 near inner side plate 120, so as to guide the lifting base 304 when it moves up and down.

[0034] In some embodiments, a lead screw 301 is provided on both the left and right sides of the projection screen assembly 2. The left and right lead screws 301 are connected to a synchronous belt. A drive wheel is provided on the top of the drive device 303. The synchronous belt passes around the drive wheel and transmits the driving force of the drive device 303 to the two lead screws 301. A synchronous belt pretensioner is provided around the drive wheel. The pretensioner has a circular sliding or rolling structure.

[0035] In some embodiments, the lifter 302 is located behind the front frame, which has a structure of through holes of varying sizes inside. Different styles of decorative artificial firewood can be placed inside the electric fireplace through the large through hole, and an air vent ornament is provided at the small through hole. The structure and arrangement of the air vent ornament are existing technologies and will not be described in detail here.

[0036] In some embodiments, decorative component 4 is a decorative faux firewood component. Drive unit 303 is an electric motor.

[0037] The adjustable electric fireplace 100 in this embodiment operates as follows: Drive device 303 rotates lead screw 301 via synchronous belt drive structure. Lifter 302 rises along lead screw 301. When lifter 302 rises at the lowest point, the bottom of projection screen assembly 2 slides on the surface of lifter 302 and changes the angle between it and screen 7 due to gravity. When it slides to limit member 305 of lifter 302, the top of projection screen assembly 2 begins to move backward and stretches elastic member 5 (preferably a spring, but a telescopic cylinder or similar component can also be used). As lifter 302 rises, the top of projection screen assembly 2 moves backward, and the distance between the bottom of projection screen assembly 2 and the bottom of the electric fireplace cavity increases until it reaches a certain position and stops working. At this time, the user can replace or add decorations. When the lift 302 descends, the top of the projection screen assembly 2, due to the action of the elastic component 5 (the spring provides forward thrust to the projection screen assembly 2, reducing the resistance of the lift 302 during descent), ensures that the bottom of the projection screen assembly 2 remains firmly against the lift 302 during descent. Furthermore, the force of gravity ensures that the bottom of the projection screen assembly 2 will not slip off the surface of the lift 302. Since the user has changed the decorations, the stopping point of the lift 302's descent can be different from before, and the angle and height of the projected flame can also be different, thus providing the electric fireplace with multiple holographic effects. In this embodiment, the movement of the projection screen assembly 2 is all completed inside the electric fireplace (without occupying external space). By automatically folding the projection screen assembly 2, its height is automatically increased, enhancing the viewing effect, while eliminating the uncertainties associated with disassembling the machine, providing a convenient way to switch between display effects for different scenarios.

[0038] Example 2 like Figures 15-25As shown, this embodiment provides an adjustable electric fireplace 100. Based on embodiment 1, the housing assembly 1 of this embodiment further includes a screen fixing assembly 104, a second lifting assembly 105, and a connecting assembly 106. The screen fixing assembly 104 is disposed on the top of the housing 102; the screen 7 is fixedly connected to the screen fixing assembly 104 and disposed on the lower surface of the screen fixing assembly 104; the side of the projection screen assembly 2 away from the opening 103 is movably connected to the side of the screen fixing assembly 104 away from the opening 103; the connecting assembly 106 can connect the side of the projection screen assembly 2 near the opening 103 to the side of the screen fixing assembly 104 near the opening 103; the second lifting assembly 105 is movably connected to the side of the screen fixing assembly 104 away from the opening 103, and the second lifting assembly 105 can drive the side of the screen fixing assembly 104 away from the opening 103 to rise and fall to change the tilt angle of the screen fixing assembly 104 relative to the horizontal plane. When the front of the projection screen assembly 2 rises to the set position under the drive of the lifting assembly 1 3, the front of the projection screen assembly 2 and the front of the screen fixing assembly 104 are connected by the connecting assembly 106. The rear of the screen fixing assembly 104 is moved downward by the lifting assembly 2 105 so that the screen fixing assembly 104 gradually tilts from the top of the housing assembly 1 until the rear of the screen fixing assembly 104 moves to the lower end of the housing assembly 1. Since the rear of the projection screen assembly 2 is connected to the screen fixing assembly 104, and the front of the projection screen assembly 2 is connected to the screen fixing assembly 104 through the connecting assembly 106, the projection screen assembly 2 can tilt downward and backward with the screen fixing assembly 104. At this time, the screen 7 can be used as a background to play video content. The video content is projected onto the screen and combined with the decorative artificial wood in front to form a new effect display.

[0039] In some implementations, such as Figure 25 and Figure 26 As shown, it also includes a second driving device 8. The screen fixing assembly 104 includes a screen fixing plate 109, a track structure 110, and a gear assembly 111. There are two track structures 110, both of which are fixedly connected to the housing assembly 1. There is at least one gear assembly 111. Each track structure 110 extends from the side near the opening 103 to the side away from the opening 103. At least one track structure 110 is provided with rack teeth. The two ends of the screen fixing plate 109 near the opening 103 are respectively movably connected to the two track structures 110. At least one end of the screen fixing plate 109 near the opening 103 is provided with a gear assembly 111. The gear assembly 111 meshes with the track structure 110 on the corresponding side. The second driving device 8 is connected to the gear assembly 111. The second driving device 8 can drive each gear assembly 111 to rotate around the axis of the corresponding gear assembly 111, so that the side of the screen fixing plate 109 near the opening 103 moves along the track structure 110.

[0040] In some embodiments, the track grooves of the two track structures 110 are arranged opposite each other, and each track groove is provided with rack teeth; the two ends of the screen fixing plate 109 near the opening 103 are respectively rotatably connected to two gear assemblies 111, and the two gear assemblies 111 are respectively meshed with the two track structures 110; the two ends of the screen fixing plate 109 near the opening 103 are respectively slidably connected to the two track grooves, and the two ends of the screen fixing plate 109 away from the opening 103 are rotatably connected to the second lifting assembly 105; the side of the projection screen assembly 2 away from the opening 103 is movably connected to the side of the screen fixing plate 109 away from the opening 103. The second lifting assembly 105 drives the rear side of the screen fixing plate 109 to descend, and at the same time, the second driving device 8 drives the gear assembly 111 to rotate, so that the gear assembly 111 moves along the rack teeth in the direction away from the opening 103, thereby driving the front side of the lifting assembly to move backward, thereby causing the screen fixing plate 109 to tilt.

[0041] In some embodiments, the lifting assembly 105 includes a driving device 3, two lead screws 108, and two connecting blocks 122. Each lead screw 108 is rotatably connected to the housing assembly 1. The lead screw 108 is connected to the driving device 3, which can drive each lead screw 108 to rotate around its corresponding axis. The two connecting blocks 122 are threadedly connected to the two lead screws 108 respectively. The two ends of the screen fixing assembly 104 on the side away from the opening 103 are rotatably connected to the two connecting blocks 122 respectively. The lifting of the rear side of the screen fixing assembly 104 is achieved through the engagement of the lead screw and nut.

[0042] In some embodiments, the connecting assembly 106 includes a connecting body 113, the upper end of which is connected to the screen fixing plate 109 and is capable of rotating about a vertical axis relative to the screen fixing plate 109. The lower end of the connecting body 113 is provided with a slot 112. The connecting body 113 is capable of rotating about a vertical axis under the action of an external force, and the end of the screen fixing plate 109 near the opening 103 and the end of the projection screen assembly 2 near the opening 103 are inserted into the slot 112.

[0043] In some embodiments, the connecting assembly 106 further includes an elastic member 114, one end of which is fixedly connected to the screen fixing plate 109, and the other end of which is connected to the connecting body 113; a middle plate assembly 9 is provided between the top plate 115 and the screen fixing assembly 104, and a limiting plate 901 is provided on the middle plate assembly 9; when the screen fixing plate 109 is in the initial position at the top of the housing assembly 1, the limiting plate 901 can abut against the connecting body 113 and make the slot of the slot 112 face the direction perpendicular to the length direction of the track structure 110; when the screen fixing plate 109 is in the initial position at the top of the housing assembly 1, the elastic member 114 is in a compressed state; when the gear assembly 111 moves along the track structure 110 in a direction away from the opening 103, the elastic member 114 can push the connecting body 113 to rotate and make the end of the screen fixing plate 109 near the opening 103 and the end of the projection screen assembly 2 near the opening 103 extend into the slot 112. When the screen fixing plate 109 is in its initial position at the top of the housing assembly 1, the slot 112 is located outside the projection screen assembly 2 under the squeezing action of the limiting plate 901, and the projection screen assembly 2 can be freely adjusted in angle. When the projection screen assembly 2 is adjusted to its final position (preferably adjusted to a horizontal state), the driving device 2 drives the screen fixing plate 109 to rotate, and the front side of the screen fixing plate 109 moves away from the limiting plate 901. The squeezing action of the limiting plate 901 on the connecting body 113 gradually decreases, and the connecting body 113 rotates under the elastic force of the elastic member 2 114, causing the slot to tilt towards the side closer to the projection screen assembly 2, so that the end of the screen fixing plate 109 near the opening 103 and the end of the projection screen assembly 2 near the opening 103 extend into the slot 112. When the gear assembly 111 moves along the track structure 110 toward the direction of the opening 103, the front side of the screen fixing plate 109 moves toward the direction of the limiting plate 901. The limiting plate 901 can press the connecting body 113 to reset the connecting body 113, and the projection screen assembly 2 disengages from the slot 112.

[0044] In some embodiments, the other end of the elastic member 2 114 is preferably fixedly connected to the connecting body 113.

[0045] In some embodiments, the second drive device 8 can drive each gear assembly 111 to move along the corresponding track structure 110 in a direction away from the opening 103 to switch to a vertical state; when the screen 7 is in a vertical state, the screen 7 is perpendicular to the base plate 118 of the housing assembly 1; the second drive device 8 can drive each gear assembly 111 to move along the corresponding track structure 110 in a direction closer to the opening 103 to switch the screen 7 from a vertical state to an initial state.

[0046] In some embodiments, the top optical shaft portions of lead screw 1 301 and lead screw 2 108 are both confined to the middle plate assembly 9, the bottom of lead screw 1 301 and lead screw 2 108 are both equipped with synchronous belt drive wheels, and the bottom optical shaft portions of lead screw 1 301 and lead screw 2 108 are mounted on the lead screw fixing member of the base plate 118.

[0047] In some implementations, both drive device three and drive device two are electric motors.

[0048] In some embodiments, an air guide plate, a fan heating element, a speaker, and a main control board are provided between the top plate 115 and the middle plate assembly 9. The adjustable electric fireplace 100 in this embodiment operates as follows: Drive device 303 rotates lead screw 301 via synchronous belt drive structure. Lifter 302 rises along lead screw 301. When lifter 302 rises at the lowest point, the bottom of projection screen assembly 2 slides on the surface of lifter 302 and changes the angle between it and screen 7 due to gravity. When it slides to limit member 305 of lifter 302, the top of projection screen assembly 2 begins to move backward and stretches elastic member 5 (preferably a spring, but a telescopic cylinder or similar component can also be used). As lifter 302 rises, the top of projection screen assembly 2 moves backward, and the distance between the bottom of projection screen assembly 2 and the bottom of the electric fireplace cavity increases until it reaches a certain position and stops working. At this time, the user can replace or add decorations.

[0049] The lift 302 continues to rise, and the top of the projection screen assembly 2 moves backward until the projection screen assembly 2 is parallel to the screen 7. At this time, the drive device 3 rotates, driving the connecting block 122 downward through the synchronous belt drive screw 108. At the same time, the drive device 8 rotates, driving the gear assembly 111 (toothed wheel) to move within the track structure 110 with rack 121, causing the front end of the screen fixing assembly 104 to move backward. The connecting body 113 (preferably a glass buckle) gradually moves away from the contact surface of the middle plate assembly 9, and the elastic member 114 (preferably...) moves backward. Under the elastic force of the spring, the connecting body 113 will rotate at a certain angle and lock the bottom of the projection screen assembly 2, allowing the projection screen assembly 2 to move backward and swing with the screen fixing assembly 104 without falling off. As the connecting block 122 continues to descend, the screen fixing assembly 104 can be placed perpendicular to the base plate 118, thereby realizing the position change of the screen 7 from the horizontal direction to the vertical direction. The screen 7 can be used as a background to play video content, so that the video content is projected through the projection screen and combined with the decorative artificial wood in front to form a new effect display.

[0050] When the connecting block 122 moves upward, the driving device 8 rotates, pushing the front end of the screen fixing component 104 forward. As the front end approaches the limiting plate 901, the connecting body 113 contacts the limiting plate 901 and squeezes the connecting body 113 to swing. At this time, the connection between the projection screen component 2 and the screen fixing component 104 is released. The bottom of the projection screen component 2 is just inside the groove structure of the lifter 302. When the lifter 302 descends, the groove structure provides a downward pulling action to the projection screen component 2, so that it descends with the lifter 302. When the lifter 302 descends, the top of the projection screen component 2 is protected by the elastic component 5 (the spring provides a forward thrust to the projection screen component 2 at this time, reducing the resistance of the lifter 302 when descending). This ensures that the bottom of the projection screen component 2 is close to the lifter 302 during the descent. Under the support of gravity, it is also ensured that the bottom of the projection screen component 2 will not slip off the surface of the lifter 302. Since the user has changed the decorations, the stopping point of the elevator 302 can be different from before, and the angle and height of the projected flame can also be different, thus giving the electric fireplace a variety of holographic effects to choose from.

[0051] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. An adjustable electric fireplace, characterized by: The shell assembly, the projection screen assembly, the lifting assembly and the decoration assembly are provided. The shell assembly comprises a front cover plate and a box shell with an opening on the front side. The projection screen assembly is obliquely arranged in the box shell, and the rear end of the projection screen assembly is movably connected to the upper rear of the shell assembly. The front end of the projection screen assembly is connected to or in contact with the lifting assembly. The decoration assembly is arranged in the shell assembly and behind the projection screen assembly.

2. The adjustable electric fireplace of claim 1, wherein: The front end of the projection screen assembly can be lifted by the lifting assembly so that the decoration assembly can pass between the front end of the projection screen assembly and the inner bottom wall of the opening.

3. The adjustable electric fireplace of claim 2, wherein: The lifting assembly comprises two lead screws, two lifters and a driving device.

4. The adjustable electric fireplace of claim 1, wherein: The two lifters each comprise a lifting base and a limiting member fixed to the lifting base. The two sliding blocks are movably connected to the rear end of the projection screen assembly and slidably connected to the shell assembly. The two elastic components are fixed to the shell assembly at one end and to the two sliding blocks at the other end. When the front end of the projection screen assembly is lifted by the lifting assembly, the sliding blocks can move away from the opening relative to the shell assembly. The screen is arranged on the top of the shell assembly in the initial state. The angle between the projection screen assembly and the screen can be adjusted by lifting the front end of the projection screen assembly, and the angle between the projection screen assembly and the screen ranges from 0 to 50 degrees.

5. The adjustable electric fireplace of claim 3, wherein: The housing assembly further includes a screen fixing component, a second lifting component, and a connecting component. The screen fixing component is disposed on the top of the housing. The screen is fixedly connected to the screen fixing component and disposed on the lower surface of the screen fixing component. The side of the projection screen assembly away from the opening is movably connected to the side of the screen fixing component away from the opening. The connecting component can connect the side of the projection screen assembly near the opening to the side of the screen fixing component near the opening. The second lifting component is movably connected to the side of the screen fixing component away from the opening. The second lifting component can drive the side of the screen fixing component away from the opening to move up and down to change the tilt angle of the screen fixing component relative to the horizontal plane.

6. The adjustable electric fireplace of claim 5, wherein: The system also includes a second driving device. The screen fixing assembly includes a screen fixing plate, a track structure, and a gear assembly. There are two track structures, each fixedly connected to the housing assembly. There is at least one gear assembly. Each track structure extends from the side closest to the opening to the side furthest from the opening, and at least one track structure is provided with rack teeth. The two ends of the screen fixing plate closest to the opening are respectively movably connected to the two track structures. At least one end of the screen fixing plate closest to the opening is provided with the gear assembly, which meshes with the rack teeth of the corresponding track structure. The second driving device is connected to the gear assembly. The second driving device can drive each gear assembly to rotate around the axis of the corresponding gear assembly, so that the side of the screen fixing plate closest to the opening moves along the track structure.

7. The adjustable electric fireplace of claim 5, wherein: The second lifting assembly includes a third driving device, two second lead screws, and two connecting blocks. Each second lead screw is rotatably connected to the housing assembly. The second lead screw is connected to the third driving device, which can drive each second lead screw to rotate around the axis of the corresponding second lead screw. The two connecting blocks are threadedly connected to the two second lead screws respectively. The two ends of the screen fixing assembly on the side away from the opening are rotatably connected to the two connecting blocks respectively.

8. The adjustable electric fireplace of claim 6, wherein: The connecting assembly includes a connecting body, the upper end of which is connected to the screen fixing plate and is capable of rotating about a vertical axis relative to the screen fixing plate. The lower end of the connecting body is provided with a slot. The connecting body can rotate about the vertical axis under the action of an external force, and the end of the screen fixing plate near the opening and the end of the projection screen assembly near the opening can be inserted into the slot.

9. The adjustable electric fireplace of claim 8, wherein: The connecting assembly further includes a second elastic component, one end of which is fixedly connected to the screen fixing plate, and the other end of which is connected to the connecting body. A middle plate assembly is provided between the top plate of the housing assembly and the screen fixing assembly, and a limiting plate is provided on the middle plate assembly. When the screen fixing plate is in the initial position at the top of the housing assembly, the limiting plate can abut against the connecting body and make the slot of the card slot face a direction perpendicular to the length direction of the track structure. When the screen fixing plate is in the initial position at the top of the housing assembly, the second elastic component is in a compressed state. When the gear assembly moves along the track structure in a direction away from the opening, the second elastic component can push the connecting body to rotate and make the end of the screen fixing plate near the opening and the end of the projection screen assembly near the opening extend into the card slot.

10. The adjustable electric fireplace of claim 6, wherein: The second driving device can drive each gear assembly to move along the corresponding track structure in a direction away from the opening so that the screen switches to a vertical state; when the screen is in the vertical state, the screen is perpendicular to the bottom plate of the housing assembly; the second driving device can drive each gear assembly to move along the corresponding track structure in a direction closer to the opening so that the screen switches from the vertical state to the initial state.

Images