CN216956643U - Shell assembly and projection equipment - Google Patents

Abstract

The utility model discloses a shell assembly and projection equipment, and relates to the technical field of projection equipment. The first shell is provided with a lens mounting hole, and the lens mounting hole is used for a lens of the projection equipment to penetrate through. At least one flexible dustproof sheet is arranged at the lens mounting hole and is detachably connected with the first shell. The flexible dustproof sheet is annular, and a plurality of notches are formed in the flexible dustproof sheet along the circumferential direction of the inner ring of the flexible dustproof sheet. The utility model is used for projection equipment.

Description

Shell assembly and projection equipment

Technical Field

The utility model relates to the technical field of projection equipment, in particular to a shell assembly and projection equipment.

Background

The projection device may use different direct focal lenses when applied. In order to facilitate lens replacement, the front shell of the projection apparatus needs to be opened according to the size of the maximum lens, and the size needs to be opened according to the maximum lens. Because the size difference of the product lens is large, the situation that the gap between the lens and the whole shell is uneven can occur after the lens with small size is installed. And because the existence of gap, the dust can enter into projection equipment more easily to bring the hidden danger to projection equipment life.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a shell assembly and projection equipment, wherein a flexible dustproof sheet is arranged at a lens mounting hole to seal a gap, so that external dust is reduced.

In order to achieve the above purpose, the embodiment of the utility model adopts the following technical scheme:

in one aspect, a housing assembly for a projection device includes a first housing and at least one flexible dust-proof sheet. The first shell is provided with a lens mounting hole, and the lens mounting hole is used for a lens of the projection equipment to penetrate through. At least one flexible dustproof sheet is arranged at the lens mounting hole and is detachably connected with the first shell. The flexible dustproof sheet is annular, and a plurality of notches are formed in the flexible dustproof sheet along the circumferential direction of the inner ring of the flexible dustproof sheet.

The embodiment of the application provides a shell assembly, which adopts a flexible dustproof sheet to be installed at the lens installation hole of a first shell, and the annular structure of the flexible dustproof sheet can be matched with the shape of the lens installation hole. And the inner ring of the flexible dustproof sheet is provided with a plurality of notches along the circumferential direction, so that the notches are arranged on the inner ring of the flexible dustproof sheet, when the size of the lens is smaller, the notches of the inner ring of the flexible dustproof sheet can be opened at small angles, and the lens can be extended out of the inner ring of the flexible dustproof sheet. When the size of the lens is large, the notch of the inner ring of the flexible dustproof sheet can be opened by a large angle, and a large space is opened for the lens to extend out. In this case, this flexible dustproof sheet can be applicable to the camera lens of different sizes to can not because the camera lens mounting hole is too big, the great gap appears between with first casing when leading to the installation small-size camera lens. Thereby reducing the possibility of dust entering between the lens mounting hole of the first housing and the lens.

In addition, flexible dustproof sheet can form to dismantle with first casing and be connected, so, not only the installation of flexible dustproof sheet is dismantled conveniently, and the later stage of being convenient for moreover is maintained flexible dustproof sheet.

Further, the at least one flexible dust guard comprises two flexible dust guards. Two flexible dustproof pieces are stacked and arranged coaxially, and the notch on any one flexible dustproof piece and the notch on the other flexible dustproof piece are alternately arranged.

Furthermore, the outer ring of the flexible dustproof sheet is provided with a first alignment port and a second alignment port, and the first alignment port is larger than the second alignment port.

Wherein, the first counterpoint mouth on arbitrary flexible dustproof piece all overlaps with the second counterpoint mouth on another flexible dustproof piece.

Furthermore, the shell assembly also comprises a mounting ring which is arranged at the lens mounting hole and is clamped with the first shell; at least one flexible dust-proof sheet is clamped on one side of the mounting ring close to the first shell.

Furthermore, the mounting ring comprises a mounting ring body and a clamping jaw, the clamping jaw is arranged on one side, close to the first shell, of the mounting ring body, and the clamping jaw is connected with the mounting ring body. Wherein, offer a plurality of mounting grooves on the flexible dustproof sheet, a mounting groove and a jack catch joint.

Further, the mounting ring includes a mounting ring body, a rotation guide block, and a guide projection. The rotary guide block is arranged on one side, close to the first shell, of the mounting ring body and is connected with the mounting ring body, and a guide groove is formed in one side, close to the outer ring of the mounting ring body, of the rotary guide block. The guide bulge is arranged in the guide groove.

The shell assembly further comprises a first guide ring and a guide inclined plane, and the first guide ring is arranged at the lens mounting hole and connected with the first shell. The guide inclined plane is arranged on one side, far away from the mounting ring, of the first guide ring and is connected with the first guide ring. A plurality of protruding installing openings are circumferentially formed in the inner ring of the first guide ring, a guide inclined plane is arranged beside one protruding installing opening, and one side, close to the protruding installing opening, of the guide inclined plane is higher than one side, far away from the protruding installing opening, of the guide inclined plane. Wherein, rotatory guide block passes protruding installing port, and the guide way joint in protruding installing port one side, and the direction inclined plane is protruding to butt with the direction.

Further, the shell assembly further comprises a positioning lug, and the positioning lugs are arranged on one side, close to the mounting ring body, of the first guide ring. A plurality of positioning grooves are formed in one side, close to the first guide ring, of the mounting ring body, and one positioning groove is connected with one positioning bump in an inserting mode.

Further, the mounting ring further comprises a second guide ring, the second guide ring is coaxial with the mounting ring body and is arranged on the inner ring of the mounting ring body. The second guide ring is connected with the mounting ring body. The jack catch sets up in second guide ring and is close to first casing one side, and the jack catch passes through the second guide ring and links to each other with the collar body.

Furthermore, the number of the notches in the flexible dustproof sheet is even times of the number of the mounting grooves in the flexible dustproof sheet. First counterpoint mouth and second counterpoint mouth are all seted up between two adjacent mounting grooves along the circumference of flexible dustproof sheet. The radian between the first aligning port and the mounting groove close to the first aligning port, the radian between the second aligning port and the mounting groove close to the second aligning port and the radian between the first aligning port and the second aligning port are equal.

On the other hand, this application embodiment provides a projection equipment, including projection equipment host computer and the shell that is used for holding the projection equipment host computer, the shell includes above-mentioned technical scheme's casing subassembly and second casing, and the second casing has the casing installation mouth, and casing subassembly's first casing inlays to be located casing installation mouth department and forms with the second casing and hold the chamber.

The projection device provided by the embodiment of the utility model can obtain the same technical effect as the shell assembly provided by the embodiment, and the details are not repeated herein.

Drawings

Fig. 1 is a schematic view of a projection system according to an embodiment of the present disclosure;

FIG. 2 is a schematic view of a housing assembly and a second housing assembly provided by an embodiment of the present application;

FIG. 3 is a schematic view of a housing assembly provided by an embodiment of the present application;

FIG. 4 is a schematic view of the flexible dust guard of FIG. 3 not installed according to an embodiment of the present application;

FIG. 5 is a schematic view of the flexible dust guard of FIG. 3 according to an embodiment of the present disclosure;

FIG. 6 is a schematic view of two flexible dust guard stacks according to embodiments of the present application;

FIG. 7 is another schematic view of the flexible dust guard of FIG. 3 according to an embodiment of the present disclosure;

FIG. 8 is a schematic view of a flexible dust guard and a mounting ring provided in an embodiment of the present application after installation;

FIG. 9 is a schematic view of a first housing provided in accordance with an embodiment of the present application;

FIG. 10 is a schematic view of a mounting ring provided in accordance with an embodiment of the present application;

FIG. 11 is a schematic view of the jaws of FIG. 10 according to an embodiment of the present disclosure;

FIG. 12 is a schematic view of an alternative mounting ring provided in accordance with an embodiment of the present application;

FIG. 13 is a partial schematic view of a mounting ring provided in accordance with an embodiment of the present application;

fig. 14 is a schematic rear view of a lens mounting hole according to an embodiment of the present disclosure;

FIG. 15 is a partial rear view of a lens mount provided in an embodiment of the present application;

fig. 16 is a schematic front view of a lens mounting hole provided in an embodiment of the present application;

FIG. 17 is a schematic view of another mounting ring provided in accordance with an embodiment of the present application;

FIG. 18 is a partial rear view of a housing assembly according to an embodiment of the present application;

fig. 19 is a schematic diagram of a housing according to an embodiment of the present application.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

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

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be a mechanical connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The embodiment of the present application provides a projection system 100, and in some embodiments of the present application, as shown in fig. 1, the projection system 100 may include a projection device 101 and a projection curtain 102, where the projection device 101 includes a housing 2 and a projection device host 1 inside the housing 2, the projection device host 1 has a lens 11, and the lens 1 protrudes out of the housing 2 toward the projection curtain 102, and the lens 11 may be configured to transmit a projection light beam and project the projection light beam onto the projection curtain 102 for imaging. In other embodiments of the present application, the projection curtain 102 may be replaced with a wall or other surface capable of imaging.

The projection curtain 102 is a tool for displaying images and video files in the fields of movies, offices, home theaters, large conferences, and the like. And can be divided into various sizes. The selection of different spatial projection screens 102 is different, for example, a wide viewing angle and a low gain screen are suitable for a situation with a large number of people to watch or a situation with a transverse watching, a narrow viewing angle and a high gain screen are suitable for a narrow and long space watching, and a screen with a proper gain is simultaneously selected, which is beneficial to improving the contrast of the screen, increasing the gray level of an image, brightening the color and increasing the observability of the image.

It should be noted that the projection device 101 may be a laser television, a projector, or other various devices, where the laser television uses a red, green, and blue three-primary-color solid-state laser as a system light source, or uses a monochromatic solid-state laser to excite phosphor as a system light source, or uses a hybrid technology projection light source in which a solid-state laser and an LED are combined as a system light source. The red, green and blue visible light laser beams in the laser television are projected onto a screen after passing through the beam expanding and shaping equipment, and luminous images watched by human eyes are soft light rays and cannot cause damage to human eyes. The laser television is usually provided with a human eye protection device, when human eyes are close to the laser beam, the brightness can be automatically reduced, and the damage to the human eyes is further avoided. Compared with the liquid crystal display television with the same size, the laser television is smaller, has lower power consumption and lower cost performance under the same size, and meets the use requirement of a family living room. The embodiment of the present application may be described by taking a laser television as an example, and the embodiment of the present application does not limit the type of the projection device 101, and it is sufficient that an image is formed in a plane after the projection light beam is emitted.

In some embodiments of the present application, when the projection curtain 102 is used, since the projection curtain 102 can be lifted, the projection curtain 102 can be opened when the projection apparatus 101 is used, and then the projection apparatus 101 is opened, so that the lens 11 can emit the projection beam onto the projection curtain 102 to form an image on the projection curtain 102. In other embodiments of the present application, when the wall surface of the wall is flat, the lens 11 may be directly opposed to the wall surface of the wall, thereby forming an image on the wall.

The above-mentioned specific structure of the housing 2 for accommodating the projection device main body 1 is exemplified below, for example, in some embodiments of the present application, as shown in fig. 2, the housing 2 may include a housing assembly 3 and a second housing 4, wherein the second housing 4 has a housing mounting opening 41, the housing assembly 3 is embedded at the housing mounting opening 41 and forms an accommodating cavity with the second housing 4. In this way, the projection device main body 1 can be fitted in the accommodating chamber.

Most of the direct focus products of the projection apparatus 101 are field-mounted lenses 11, and most of the products are integrally assembled with the lens 1 after being disassembled and assembled. And the lens 11 is not selectable, only one lens 11 can be mounted. The inner structure can be seen through the installation gap after some camera lenses 11 are installed, and because of having great gap, the inside dust that gets into easily of product complete machine structure brings the hidden danger for the life of product. Accordingly, the present embodiment provides a housing assembly 3. The problem of lens 11 have the gap great with the complete machine after the equipment is solved.

The above-mentioned specific structure of the housing assembly 3 is exemplified below, for example, in some embodiments of the present application, as shown in fig. 3, the housing assembly 3 may include a first housing 31 and at least one flexible dust-proof sheet 32. As shown in fig. 4, the first housing 31 is opened with a lens mounting hole 311. At least one flexible dustproof sheet 32 is disposed at the lens mounting hole 311, and detachably connected to the first housing 31. As shown in fig. 5, the flexible dust-proof sheet 32 is annular, and a plurality of notches 321 are formed in the inner ring of the flexible dust-proof sheet 32 along the circumferential direction.

In this case, with the flexible dust-proof sheet 32 being mounted at the lens mounting hole 311 of the first housing 31, the annular structure of the flexible dust-proof sheet 32 may conform to the shape of the lens mounting hole 311. And the inner ring of the flexible dustproof sheet 32 is provided with a plurality of notches 321 along the circumferential direction, so that, because the notches 321 are arranged on the inner ring of the flexible dustproof sheet 32, when the size of the lens 11 in fig. 2 is small, the notches 321 of the inner ring of the flexible dustproof sheet 32 can be opened at a small angle, and the lens 11 can be extended out of the inner ring of the flexible dustproof sheet 32. When the size of the lens 11 is larger, the cut 321 of the inner ring of the flexible dustproof sheet 32 can be opened at a large angle, and a large space is opened for the lens 11 to extend out. In this case, the flexible dustproof sheet 32 in fig. 3 can be applied to lenses 11 of different sizes, and a large gap with the first housing 31 when the small-sized lens 11 is mounted does not occur due to the lens mounting hole 311 being too large. Thereby reducing the possibility of dust entering between the lens mounting hole 311 of the first housing 31 and the lens 11.

Known by the above, when camera lens 11 passed the inner ring of flexible dustproof piece 32, incision 321 can open certain angle, this moment, the inner ring of flexible dustproof piece 32 can form the butt with camera lens 11, the material of flexible dustproof piece 32 can the gasket of rubber for the raw materials, we see usually that there is transparent cushion, the EVA callus on the sole, circular callus on the sole, semicircle type transparent cushion, the rubber pad, the silica gel pad, the rubber mat, PU, PVC, EPDM transparent cushion, the hemisphere callus on the sole, hemisphere type rubber mat, the glass pad, the crash pad, the slipmat, the gasket that takes precautions against earthquakes, anticorrosive gasket, the waterproof pad, the foam-rubber cushion, bubble cotton pad etc.. Therefore, the flexible dust-proof sheet 32 has certain deformability and resilience, and therefore, the flexible dust-proof sheet 32 can seal the gap between the lens mounting hole 311 and the lens 11, and of course, in other embodiments of the present application, the material of the flexible dust-proof sheet 32 is not limited.

In addition, the flexible dust-proof sheet 32 may be detachably connected to the first housing 31, for example, by a screw connection, a snap connection, a hinge connection, and the like. Thus, the installation and disassembly of the flexible dustproof sheet 32 are convenient, and the flexible dustproof sheet 32 is convenient to maintain in the later period. In this case, the flexible dustproof sheet 32 can reduce the entrance of dust, thereby indirectly prolonging the service life of the device and saving the use cost.

The above-mentioned at least one flexible dustproof sheet 32 is exemplified below, the at least one flexible dustproof sheet 32 may include one flexible dustproof sheet 32, two flexible dustproof sheets 32, or three or more flexible dustproof sheets 32, and for better clarity of explaining the technical solution of the present application, the following is exemplified by two flexible dustproof sheets 32, for example, in some embodiments of the present application, as shown in fig. 6, two flexible dustproof sheets 32 are stacked and coaxial, and the notch 321 on any one flexible dustproof sheet 32 and the notch 321 on another flexible dustproof sheet 32 are arranged alternately.

It should be noted that, the alternating arrangement mentioned here is that the slits 321 on one of the flexible dust-proof sheets 32 are staggered from the slits 321 on the other flexible dust-proof sheet 32, and there is no case where the slits 321 are overlapped between two flexible dust-proof sheets 32.

Thus, when the lens 11 in fig. 2 passes through the two flexible dust-proof sheets 32, the cut 321 of any one of the flexible dust-proof sheets 32 is opened for the lens 11 to pass through. Because the notches 321 on the two flexible dustproof sheets 32 are alternately arranged, when the lens 11 passes through the two flexible dustproof sheets 32, the notch 321 on any one flexible dustproof sheet 32 is covered by the other flexible dustproof sheet 32, and in this case, the flexible dustproof sheets 32 arranged in a stacked manner can have a better dustproof effect relative to a single flexible dustproof sheet 32. The staggered notches 321 are arranged, so that the product is almost seamless after being shielded mutually, and a good dustproof effect is achieved. The product is more compatible with more lens 11 sizes due to the presence of the notch 321.

In addition, the two flexible dustproof sheets 32 have the same structure, so that the production and the processing are convenient, and the radian of the notches 321 on the two flexible dustproof sheets 32 is kept consistent, so that the notches 321 on the two flexible dustproof sheets 32 are arranged alternately. If the position of the notch 321 is different, not only the notch 321 is easily caused to be on the outer side, but also the stress of the flexible dustproof sheet 32 is different due to the different positions of the notch 321, so that the service life of the flexible dustproof sheet 32 is reduced after the lenses 11 with different specifications and sizes frequently pass through the flexible dustproof sheet 32. And the length of the cut 321 on the two flexible dust-proof sheets 32 is kept consistent to satisfy better dust-proof effect.

In this case, because above-mentioned two flexible dustproof pieces 32 have certain limited to the mounted position, the setting just can reach better dustproof effect just to the incision 321 of two flexible dustproof pieces 32 all arranges in turn. In order to improve the mounting accuracy of the two flexible dustproof sheets 32. As shown in fig. 7, a first alignment opening 322 and a second alignment opening 323 may be formed in the outer ring of the flexible dust-proof sheet 32, and the first alignment opening 322 is larger than the second alignment opening 323. The first alignment opening 322 of any one of the flexible dustproof sheets 32 overlaps the second alignment opening 323 of the other flexible dustproof sheet 32 (in fig. 6, the first alignment opening 322 and the second alignment opening 323 are omitted and not labeled).

In this case, the first alignment opening 322 and the second alignment opening 323 formed on the outer ring of the flexible dustproof sheet 32 may be formed in advance, so that the notches 321 on the two flexible dustproof sheets 32 can be staggered with each other, and thus, when the flexible dustproof sheets 32 are installed, only the first alignment opening 322 on any one flexible dustproof sheet 32 needs to be overlapped with the second alignment opening 323 on the other flexible dustproof sheet 32, and at this time, the notches 321 of the two flexible dustproof sheets 32 are arranged alternately. Not only the installation efficiency is improved, but also the installation precision is improved.

In addition, the first alignment port 322 and the second alignment port 323 not only realize the function of quick positioning, but also save the labor cost of manually calibrating the positions of the notches 321 on the two flexible dustproof sheets 32. The first aligning port 322 may be a large V-shaped notch, and the second aligning port 323 may be a small V-shaped notch, so that when installing, a user can easily capture the positions of the first aligning port 322 and the second aligning port 323, and since both the two aligning ports are V-shaped, when aligning, the lowest point of the notch of the first aligning port 322 needs to coincide with the lowest point of the notch of the second aligning port 323, thereby realizing point-to-point spacing and being more accurate.

The above mentioned number of the slits 321 and the relationship between the first alignment opening 322 and the second alignment opening 323 are exemplified below, for example, in some embodiments of the present application, as shown in fig. 7, a plurality of mounting grooves 324 are formed on the flexible dust-proof sheet 32 for fixing. The number of the slits 321 on the flexible dust-proof sheet 32 is even multiple of the number of the mounting grooves 324 on the flexible dust-proof sheet 32. The first alignment port 322 and the second alignment port 323 are both opened between two adjacent mounting grooves 324 along the circumferential direction of the flexible dustproof sheet 32. The radian between the first alignment port 322 and the mounting groove 324 close to the first alignment port 322, the radian between the second alignment port 323 and the mounting groove 324 close to the second alignment port 323, and the radian between the first alignment port 322 and the second alignment port 323 are all equal.

The number of the notches 321, the first alignment holes 322, and the second alignment holes 323 are only limited as one of the embodiments of the present application, and the number of the above structures will be described below for a clear description of the number relationship in the above embodiments.

For example, the number of the mounting grooves 324 of the single flexible dust-proof sheet 32 in fig. 7 may be six, the number of the slits 321 may be twice as many as the number of the mounting grooves 324, that is, twelve slits 321, and the first alignment port 322 and the second alignment port 323 are located between two adjacent mounting grooves 324 and at a trisection point between the two mounting grooves 324 (that is, the radian between the first alignment port 322 and the mounting groove 324 near the first alignment port 322, the radian between the second alignment port 323 and the mounting groove 324 near the second alignment port 323, and the radians between the first alignment port 322 and the second alignment port 323 are equal.). The first and second registration ports 322 and 323 are located on the left side in fig. 7. And the radian between two adjacent mounting grooves 324 can be equal, and the radian between two adjacent notches 321 can be equal. Thus, after one of the flexible dust-proof sheets 32 is installed, the other flexible dust-proof sheet 32 can be turned over, so that the first alignment opening 322 of one of the flexible dust-proof sheets 32 in fig. 6 is opposite to the second alignment opening 323 of the other flexible dust-proof sheet 32, and the second alignment opening 323 of the flexible dust-proof sheet 32 is opposite to the first alignment opening 322 of the other flexible dust-proof sheet 32, in this case, the slits 321 of the flexible dust-proof sheets 32 can be arranged alternately.

In addition, under the limitation of the above quantity, the first alignment opening 322 and the second alignment opening 323 of the two flexible dustproof sheets 32 can realize quick positioning. The technical problem of manual installation is reduced, the installation difficulty of the flexible dustproof sheet 32 is reduced, and the installation speed of the flexible dustproof sheet 32 cannot be influenced by the alignment problem.

To mount the flexible dust-proof sheet 32 in the lens mounting hole 311, the housing assembly 21 may further include a mounting ring 33 shown in fig. 8, and the mounting ring 33 is disposed in the lens mounting hole 311 shown in fig. 9 and is clamped with the first housing 31. As shown in fig. 8, two flexible dust-proof sheets 32 are clipped on one side of the mounting ring 33. As shown in fig. 10, the mounting ring 33 may include a mounting ring body 331 and a claw 332, the claw 332 is disposed on a side of the mounting ring body 331 close to the first housing 31, and the claw 332 is connected to the mounting ring body 331. Wherein one of the jaws 332 is engaged with one of the mounting grooves 324.

Thus, when the flexible dustproof sheets 32 are installed, the installation grooves 324 of the two flexible dustproof sheets 32 are inserted into the claws 332 on the installation ring body 331, and the number of the claws 332 may correspond to the number and positions of the installation grooves 324. Then, the side of the mounting ring 33 having the claws 332 is snapped into the lens mounting holes 311 of the first housing 31 in fig. 9. In this way, the latch 332 is engaged with the mounting groove 324 for easy removal and installation.

In addition, the claws 332 can be arranged along the circumferential direction of the mounting ring body 331, and the radians between two adjacent claws 332 are equal, so that the stress of the claws 332 can be uniformly applied to the mounting ring body 331, so that the flexible dustproof sheet 32 can be more stably clamped on the mounting ring 33. And the clamping jaws 332 can be at least clamped with two flexible dustproof sheets 32 to achieve a better dustproof effect.

In order to make the connection between the latch 332 and the mounting ring body 331 more secure, as shown in fig. 10, the mounting ring 33 may further include a second guide ring 333, and the second guide ring 333 is coaxial with the mounting ring body 331 and is disposed in an inner ring of the mounting ring body 331. The second guide ring 333 is connected to the mounting ring body 331. The latch 332 is disposed on the second guide ring 333 near the first housing 31, and the latch 332 is connected to the mounting ring body 331 through the second guide ring 333.

In this case, the plurality of claws 332 may be connected to the second guide ring 333 to form an integral structure, so that the force applied to the claws 332 is uniformly applied to the second guide ring 333, the second guide ring 333 may be offset from the outer ring of the mounting ring body 331, the flexible dust-proof sheet 32 may be fixed to the inner ring of the mounting ring body 331, and the outer ring of the mounting ring body 331 may be engaged with the first housing 31. Therefore, the outer ring and the inner ring of the mounting ring body 331 have a certain distance, which are not affected by each other, so that the mounting ring 33 can be connected with the flexible dustproof sheet 32 and can be clamped with the first shell 31.

The structure of the above-mentioned jaw 332 is exemplified below, for example, in some embodiments of the present application, as shown in fig. 11, the jaw 332 may be a structure similar to an arrow shape, wherein the jaw 332 may be composed of a jaw body 3321 and two flanges 3322, the two flanges 3322 are symmetrically disposed at one end of the jaw body 3321, and the ends connected with the two flanges 3322 are crossed to form a shape similar to an arrow. Thus, the clamping jaws 332 can be quickly inserted into the mounting grooves 324 of the flexible dustproof sheet 32 shown in fig. 7, and after the clamping jaws 332 are inserted, the flanges 3322 at two sides of the clamping jaws 332 can limit the flexible dustproof sheet 32, so that the flexible dustproof sheet 32 is clamped on the mounting ring 33 shown in fig. 8 and is prevented from falling off.

It should be noted that the shortest distance L between the flange 3322 and the second guide ring 333 is required to be able to accommodate the thickness of the flexible dust sheet 32. When the number of the flexible dust-proof sheets 32 is one, the distance L needs to satisfy the thickness of one flexible dust-proof sheet 32. When the number of the flexible dust-proof sheets 32 is two, the distance L needs to satisfy the thickness of the two flexible dust-proof sheets 32. By analogy, the embodiments of the present application are not described again. In this case, the flexible dust-proof sheet 32 can be properly caught on the claws 332 on the second guide ring 333 and can be stabilized against falling.

It should be noted that the jaws 332 may be made of plastic, and solid plastic may be softened by heating, and then the softened plastic may be placed in a mold, and allowed to cool and re-solidify into an arrowhead-shaped solid. In this way, the jaws 332 may have a certain elasticity. When stretched by an external force, the curled molecules are straightened by flexibility, but return to their original curled state once the tension is removed, thus providing resiliency to the jaws 332, such as a film product of polyethylene and polyvinyl chloride. Plastics are not as hard as metals, but have relatively high strength and wear resistance compared to glass, ceramics, wood, and the like.

For example, in some embodiments of the present application, as shown in fig. 12, the mounting ring 33 may further include a rotation guide block 334, and the rotation guide block 334 is disposed on one side of the outer ring of the mounting ring body 331 and connected to the mounting ring body 331. The mounting ring 33 may also include guide projections 335 as shown in fig. 13. One side of the rotary guide block 334 close to the outer ring of the mounting ring body 331 is provided with a guide groove 3341. The guide projection 335 is disposed in the guide groove 3341.

In addition, the housing assembly 21 may further include a first guide ring 34 and a guide slope 341 as shown in fig. 14, and the first guide ring 34 is disposed at the lens mounting hole 311 to be connected to the first housing 31. The guide slope 341 is disposed on one side (inside) of the first guide ring 34, and is connected to the first guide ring 34. A plurality of protrusion mounting openings 342 are formed in the inner ring of the first guide ring 34, and a guide inclined surface 341 is disposed beside one protrusion mounting opening 342. As shown in fig. 15, a point a of the guide slope 341 near the projection installation opening 342 is higher than a point b of the guide slope 341 far from the projection installation opening 342. The point b is smoothly transitioned between the first guide ring 34 to allow the guide boss 335 in fig. 13 to slide over. The rotary guide 334 in fig. 13 passes through the projection mounting opening 342, the guide groove 3341 is engaged with the projection mounting opening 342, and the guide slope 341 abuts against the guide projection 335.

In this case, the first guide ring 34 is disposed at the lens mounting hole 311 of the first housing 31, the first guide ring 34 may be connected to the first housing 31 as an integral structure, and the rotary guide block 334 of the mounting ring 33 may be first aligned with the boss mounting holes 342 of the first guide ring 34 when the mounting ring 33 is mounted, wherein the number and position of the boss mounting holes 342 correspond to the number and position of the rotary guide block 334. Then, the mounting ring 33 is rotated toward the side of the first guide ring 34 having the guide slope 341, the guide groove 3341 of the rotary guide block 334 is inserted into the sidewall of the boss mounting hole 342, and the mounting ring 33 is rotated again, so that the guide boss 335 is guided over the high point a of the guide slope 341 in the guide groove 3341. At this time, the guide slope 341 exerts an inclined pushing force on the guide protrusion 335, and the other end of the guide protrusion 335 in the guide groove 3341 is engaged with the sidewall of the protrusion mounting opening 342 in the opposite direction, so that the fixing of the mounting ring 33 in the circumferential direction is achieved by the engagement of the guide slope 341 with the guide protrusion 335 and the engagement of the guide groove 3341 with the sidewall of the protrusion mounting opening 342. And the mounting ring 33 does not fall down since the guide groove 3341 is caught on the side wall of the projection mounting hole 342. The cooperation of the first guide ring 34 and the mounting ring 33 may set the clockwise rotation locked and the counterclockwise rotation unlocked. The assembly time of parts is effectively reduced through the rotation matching, the installation difficulty is reduced, and the installation efficiency is improved.

To further secure the first guide ring 34 and the mounting ring 33, the housing assembly 21 may further include a positioning protrusion 343 as shown in fig. 16, and the plurality of positioning protrusions 343 may be disposed outside the first guide ring 34. As shown in fig. 17, a plurality of positioning grooves 336 are formed on the inner side of the mounting ring body 331, and one positioning groove 336 is inserted into one positioning protrusion 343 shown in fig. 16.

Thus, the positioning groove 336 can be a rectangular groove, and the positioning protrusion 343 can be a rectangular protrusion, so that the two form a matching snap connection. In other embodiments of the present application, the inner side of the mounting ring body 331 may be provided with a plurality of positioning protrusions 343, and the outer side of the first guiding ring 34 may be provided with a plurality of positioning recesses 336, so as to achieve the matching effect. This is not a limitation of the present application. Further cooperation locking can be realized between positioning groove 336 and positioning lug 343, the mutual installation of product has effectively been improved, has not only played the positioning action, has played the spacing effect of circumference of collar 33 moreover.

As shown in fig. 18, which is a schematic view of the assembled back of the housing assembly 21, the flexible dust-proof sheet 32 can be fixed on the first housing 31 by the snap-fit of the rotary guide block 334 and the protruding mounting opening 342, so as to achieve the detachable connection of the flexible dust-proof sheet 32 and the first housing 31. As shown in fig. 19, a schematic view of the housing 2 after the housing assembly 3 and the second housing 4 are mounted is shown, which solves the problem that a large gap exists between the lens 11 and the projection apparatus 101 after assembly in fig. 1, and effectively seals the gap. The shell assembly 3 has a good dustproof effect after being assembled, and effectively protects the internal structure of the lens 11 and the internal structure of the whole machine. More sizes of lenses 11 can be accommodated due to the staggered distribution of the flexible dust guard plates 32 within the housing assembly 3. The lenses 11 of various specifications can share one set of projection equipment 101, and the rotary quick-release structure is convenient to mount. In conclusion, the dustproof lens 11 can be realized, and the lens 11 can be conveniently replaced.

To sum up, when the projection apparatus 101 in the embodiment of the present application is assembled, the housing assembly 21 may be assembled first, and the specific installation steps of the housing assembly 21 are as follows:

firstly, the mounting groove 324 of one flexible dustproof sheet 32 is inserted into the claw 332 on the mounting ring body 331, then a second flexible dustproof sheet 32 is mounted according to the positions of the first alignment opening 322 and the second alignment opening 323 on the mounted flexible dustproof sheet 32, the mounting groove 324 of the second flexible dustproof sheet 32 is inserted into the claw 332 on the mounting ring body 331, and at the moment, the second flexible dustproof sheet 32 is stacked on the first flexible dustproof sheet 32. Then, the side of the mounting ring 33 with the flexible dust-proof sheet 32 faces the lens mounting hole 311 of the first housing 31, the rotary guide block 334 of the mounting ring 33 is aligned with the protrusion mounting opening 342 of the first guide ring 34, at this time, the mounting ring 33 is rotated clockwise, the guide protrusion 335 on the rotary guide block 334 goes over the guide inclined plane 341, and at the same time, the positioning groove 336 on the mounting ring 33 is inserted into the positioning protrusion 343 on the first housing 31. So that the mount ring 33 is locked at the lens mount hole 311. If unlocking is required, the mounting ring 33 is rotated counterclockwise, and the guide protrusions 335 on the rotary guide block 334 are reversed over the guide slopes 341 to the protrusion mounting openings 342, thereby detaching the mounting ring 33.

In the description herein, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. A housing assembly for a projection device, the housing assembly comprising:

the first shell is provided with a lens mounting hole, and the lens mounting hole is used for a lens of the projection equipment to penetrate through;

the flexible dustproof sheet is arranged at the lens mounting hole and is annular, and the outer ring of the flexible dustproof sheet is detachably connected with the first shell; and a plurality of notches are formed in the flexible dustproof sheet along the circumferential direction of the inner ring of the flexible dustproof sheet.

2. A housing assembly according to claim 1 wherein said at least one flexible dust tab includes two of said flexible dust tabs; the two flexible dustproof sheets are stacked and coaxial, and the notch in any one of the flexible dustproof sheets and the notch in the other flexible dustproof sheet are alternately arranged.

3. The housing assembly of claim 2, wherein the flexible dust guard has an outer ring defining a first alignment opening and a second alignment opening, and the first alignment opening is larger than the second alignment opening;

and the first alignment port on any one of the flexible dustproof sheets is overlapped with the second alignment port on the other flexible dustproof sheet.

4. A housing assembly in accordance with claim 3 further comprising:

the mounting ring is arranged at the lens mounting hole and is clamped with the first shell; the at least one flexible dustproof sheet is clamped on one side, close to the first shell, of the mounting ring.

5. A housing assembly as claimed in claim 4, wherein the mounting ring comprises:

a mounting ring body;

the clamping jaw is arranged on one side, close to the first shell, of the mounting ring body and is connected with the mounting ring body; the flexible dustproof sheet is provided with a plurality of mounting grooves, and one mounting groove is clamped with one clamping jaw.

6. A housing assembly as claimed in claim 4, wherein the mounting ring comprises:

a mounting ring body;

the rotary guide block is arranged on one side, close to the first shell, of the mounting ring body and is connected with the mounting ring body, and a guide groove is formed in one side, close to the outer ring of the mounting ring body, of the rotary guide block;

the guide bulge is arranged in the guide groove;

the housing assembly further includes:

the first guide ring is arranged at the lens mounting hole and connected with the first shell;

the guide inclined plane is arranged on one side, away from the mounting ring, of the first guide ring and is connected with the first guide ring; a plurality of bulge mounting openings are formed in the circumferential direction of the inner ring of the first guide ring, and one side, close to the bulge mounting openings, of the guide inclined plane is higher than one side, far away from the bulge mounting openings, of the guide inclined plane;

the guide groove is clamped on one side of the protrusion mounting opening, and the guide inclined plane is abutted to the guide protrusion.

7. A housing assembly as claimed in claim 6, further comprising a locating projection disposed on a side of the first guide ring adjacent the mounting ring body;

a plurality of positioning grooves are formed in one side, close to the first guide ring, of the mounting ring body, and one positioning groove is connected with one positioning lug in an inserting mode.

8. A housing assembly according to claim 5 wherein the mounting ring further comprises a second guide ring, the inner ring disposed on the mounting ring body being connected to the mounting ring body; the clamping jaw is arranged on one side, close to the first shell, of the second guide ring and is connected with the mounting ring body through the second guide ring.

9. A housing assembly as claimed in claim 5, wherein said cutouts in said flexible dust tab are an even number times the number of mounting slots in said flexible dust tab;

the first alignment port and the second alignment port are arranged between two adjacent mounting grooves along the circumferential direction of the flexible dustproof sheet; the radian between the first aligning port and the mounting groove close to the first aligning port, the radian between the second aligning port and the mounting groove close to the second aligning port and the radian between the first aligning port and the second aligning port are equal.

10. A projection device, comprising a projection device host and a housing for accommodating the projection device host, wherein the housing comprises the shell assembly of any one of claims 1 to 9 and a second shell, the second shell has a shell mounting opening, and the first shell of the shell assembly is embedded in the shell mounting opening and forms an accommodating cavity with the second shell.

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