CN219320639U - Lower shaft device of hidden ceiling projection curtain - Google Patents
Lower shaft device of hidden ceiling projection curtain Download PDFInfo
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- CN219320639U CN219320639U CN202222820762.9U CN202222820762U CN219320639U CN 219320639 U CN219320639 U CN 219320639U CN 202222820762 U CN202222820762 U CN 202222820762U CN 219320639 U CN219320639 U CN 219320639U
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- lower shaft
- tube shell
- projection curtain
- curtain
- shaft tube
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Abstract
The utility model discloses a lower shaft device of a hidden ceiling projection curtain, wherein the upper end of the projection curtain is fixedly arranged on a ceiling by a hidden curtain shell and a winding mechanism, and the lower end of the projection curtain extends into the lower shaft tube shell from a notch and is fixedly connected to a lower fixed shaft assembly; the lower fixed shaft assembly is fixed in the inner cavity of the lower shaft tube shell in a limiting way through the spring limiting assembly and the end cover; when the projection curtain rises, the limit flanges on two sides of the bottom plate of the lower shaft tube shell are matched with the bottom edge of the hidden curtain shell to provide lower limit, so that the lower limit structure is formed, the limit is reliable, friction damage is avoided, the service life is long, the assembly connection is stable and reliable, and the operation is convenient.
Description
Technical Field
The utility model belongs to the technical field of projection equipment manufacturing in video equipment, and particularly relates to a lower shaft device of a hidden ceiling projection curtain.
Background
With the high-speed development of science and technology, social economy and resident living standard, the video equipment is an essential entertainment facility in the household daily life, and the projector gradually becomes a main stream product of the household video equipment; the traditional household projection equipment generally adopts a projector to enlarge a white wall, is simple and easy to use, has high cost performance, but has poorer definition and influences the watching effect; with the technical development, the projector and the common electric curtain are also put into the application of household projection equipment, so that the atmosphere of watching film and television works is further improved, and although the definition can be improved to a certain extent, with the improvement of living standard, the requirements on indoor decoration effect are higher and higher, the common electric curtain occupies more indoor space, and the aesthetic degree of indoor environment is influenced; therefore, the hidden ceiling projection curtain is flush with the ceiling and integrated after the shell is installed, the hidden ceiling projection curtain is attractive in appearance and high in practicability, and does not occupy indoor space.
However, the hidden ceiling projection curtain in the prior art generally directly adopts a trapezoidal lower shaft device, a lower limiting structure is not arranged when the curtain ascends and is stored, the lower shaft is directly in friction contact with a notch for limiting when the curtain ascends and is stored, the limiting is unreliable, the surface of the lower shaft is easy to be rubbed and damaged, and the service life and the use effect are influenced; the lower limit flange is added to part of the products, but the assembly and connection are unstable, and the operation is inconvenient; for example, the hidden intelligent electric ceiling curtain with the patent number of CN202111186535.9 is characterized in that three riding wheels are arranged at the top end and the bottom end of a V-shaped spring to form an elastic supporting mechanism, a bottom cover is hung on a counterweight pull rod through the elastic supporting mechanism, the elastic supporting mechanism formed by the V-shaped spring and the three riding wheels is unstable in installation and connection, and the assembly and connection operation is inconvenient.
Disclosure of Invention
In order to solve the problems in the prior art, the utility model aims to provide a lower shaft device of a hidden ceiling projection curtain, which has a lower limiting structure, is reliable in limiting, can not be damaged by friction, and is long in service life, stable and reliable in assembly and connection and convenient to operate.
The technical scheme adopted by the utility model is as follows:
the lower shaft device of the hidden ceiling projection curtain comprises a lower shaft tube shell and a projection curtain, wherein a lower fixed shaft assembly is arranged in an inner cavity of the lower shaft tube shell, a notch is formed in the lower shaft tube shell, and the projection curtain extends into the lower shaft tube shell from the notch and is fixedly connected to the lower fixed shaft assembly; the lower shaft tube shell is internally provided with a spring limiting assembly, two ends of the lower shaft tube shell are provided with end covers, and the lower fixed shaft assembly is fixed in the inner cavity of the lower shaft tube shell in a limiting manner through the spring limiting assembly and the end covers; limiting flanges extending outwards horizontally are arranged on two sides of a bottom plate of the lower shaft tube shell; the lower fixed shaft assembly is provided with a curtain tightness adjusting mechanism and a horizontal position adjusting mechanism.
The section of the lower shaft tube shell is of a trapezoid structure; the lower fixed shaft assembly comprises a lower shaft rod, the lower shaft rod is formed by combining an upper shaft core and a lower shaft core, a limiting groove is formed between the upper shaft core and the lower shaft core, the lower end of the projection curtain is limited and clamped in the limiting groove, and the projection curtain at least surrounds the outer surface of the lower shaft rod for a circle.
The lower shaft rod is a cylindrical rod, the outer surface of the upper shaft core is a section of minor-arc cylindrical surface, and the inner surface of the upper shaft core is an upper curved surface formed by a section of chord surface with the middle part recessed towards the circumferential direction; the outer surface of the lower shaft core is also a section of inferior arc cylindrical surface, the inner surface of the lower shaft core is a section of lower curved surface formed by the middle part of the chord surface protruding towards the direction of the circle center, and the upper curved surface and the lower curved surface are parallel to each other.
The notch penetrates through the middle of the top plate of the lower shaft tube shell.
An arc-shaped upper limit rib is arranged at the upper part of the inner cavity of the lower shaft tube shell, the inner surface of the upper limit rib is in a semicircular arc shape, and the upper limit rib provides upper support limit for the lower shaft rod; the notch extends downwards to penetrate through the upper limit rib.
Connecting holes are symmetrically arranged between the upper limit ribs and the top plate; a pair of connecting bosses are symmetrically arranged on the inner surface of the bottom plate, and each connecting boss is provided with a connecting hole; the end cover is fixedly connected to the lower shaft tube shell through the matching of the connecting bolt and the connecting hole.
The spring limiting assembly comprises a pair of inverted V-shaped sheet-shaped spring clamps, the outer side plate of each spring clamp is tightly attached to the inner side surface of the lower shaft tube shell, and the inner side plate of each spring clamp provides lower supporting and limiting for the lower shaft rod.
The curtain tightness adjusting mechanism comprises a tightness adjusting bolt, and the horizontal position adjusting mechanism comprises a horizontal position adjusting bolt; the end cover middle part is provided with the through-hole, is provided with the transition connecting block between the both ends of lower axostylus axostyle and the end cover, and the outer section of transition connecting block rotationally sets up in the through-hole, and the inner of transition connecting block is provided with the regulation recess, and lower axostylus axostyle tip is provided with adjusts the boss, adjusts the boss cooperation and sets up in adjusting the recess, and lower axostylus axostyle tip passes through horizontal position adjusting bolt and connects on the transition connecting block.
The tightness adjusting bolt is fixedly connected to the outer end face of the transition connecting block, and the lower shaft rod can be driven to rotate through the transition connecting block.
The beneficial effects of the utility model are as follows:
the lower shaft device of the hidden ceiling projection curtain is characterized in that the upper end of the projection curtain is fixedly arranged on a ceiling by a hidden curtain shell and a winding mechanism, and the lower end of the projection curtain extends into the lower shaft tube shell from a notch and is fixedly connected to a lower fixed shaft assembly; the lower fixed shaft assembly is fixed in the inner cavity of the lower shaft tube shell in a limiting way through the spring limiting assembly and the end cover; when the projection curtain rises, the limit flanges on two sides of the bottom plate of the lower shaft tube shell are matched with the bottom edge of the hidden curtain shell to provide lower limit, so that the lower limit structure is formed, the limit is reliable, friction damage is avoided, the service life is long, the assembly connection is stable and reliable, and the operation is convenient.
Drawings
Fig. 1 to 6 are schematic views of a lower shaft device of a concealed ceiling projection curtain according to the present utility model;
FIG. 7 is a schematic view of a lower housing of a lower assembly of a concealed ceiling projection screen according to the present utility model;
FIG. 8 is a schematic view of a lower stationary shaft assembly of a lower shaft assembly of a concealed ceiling projection curtain of the present utility model;
FIG. 9 is a schematic cross-sectional view of a lower shaft of the lower shaft assembly of the concealed ceiling projection curtain of the present utility model;
fig. 10 is a schematic view of a lower shaft structure of a lower shaft device of a hidden ceiling projection curtain according to a second embodiment of the present utility model;
fig. 11 is a schematic cross-sectional view of a lower shaft device of a hidden ceiling projection curtain according to a second embodiment of the present utility model.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art without the inventive effort, are intended to be within the scope of the present utility model.
As shown in fig. 1 to 11, the utility model provides a lower shaft device of a hidden ceiling projection curtain, the foundation structure adopts a hidden ceiling projection curtain structure in the prior art, namely, the upper end of the projection curtain is fixedly arranged on a ceiling by a hidden curtain shell and a winding mechanism, so that the lower shaft device of the hidden ceiling projection curtain can be combined with a conventional hidden ceiling projection curtain structure in the prior art for matching use, and has wide application prospect.
The improvement of the utility model is that: a lower shaft tube shell 4 is arranged, a set of lower fixed shaft assembly 3 is arranged in the inner cavity of the lower shaft tube shell 4, a notch is arranged on the lower shaft tube shell 4, and the lower end of the projection curtain 1 extends into the lower shaft tube shell 4 from the notch and is fixedly connected to the lower fixed shaft assembly 3; the inside at lower axle tube shell 4 still sets up spring spacing subassembly 7, sets up end cover 2 at the both ends of lower axle tube shell 4, and lower fixed axle assembly 3 is spacing fixed at the inner chamber of lower axle tube shell 4 through spring spacing subassembly 7 and end cover 2 cooperation to the lower extreme that makes projection curtain 1 can drive down axle tube shell 4 and lower fixed axle assembly 3 wholly and rise.
Limiting flanges 42 extending outwards horizontally are arranged on two sides of the bottom plate of the lower shaft tube shell 4; when the projection curtain rises, the limit flanges on two sides of the bottom plate of the lower shaft tube shell are matched with the bottom edge of the hidden curtain shell to provide lower limit, so that a lower limit structure is formed, the projection curtain is limited and reliable, friction damage is avoided, the service life is long, and the assembly connection is stable and reliable.
Set up curtain elasticity adjustment mechanism and horizontal position adjustment mechanism on lower fixed axle subassembly 3, can adjust elasticity and horizontal position of projection curtain through curtain elasticity adjustment mechanism and horizontal position adjustment mechanism, convenient operation.
The upper end of the projection curtain is fixedly arranged on the ceiling by the hidden curtain shell and the winding mechanism, and the lower end of the projection curtain extends into the lower shaft tube shell from the notch and is fixedly connected to the lower fixed shaft assembly; the lower fixed shaft assembly is fixed in the inner cavity of the lower shaft tube shell in a limiting way through the spring limiting assembly and the end cover; when the projection curtain rises, the limit flanges on two sides of the bottom plate of the lower shaft tube shell are matched with the bottom edge of the hidden curtain shell to provide lower limit, so that the lower limit structure is formed, the limit is reliable, friction damage is avoided, the service life is long, the assembly connection is stable and reliable, and the operation is convenient.
The limit flanges on two sides of the bottom plate of the lower shaft tube shell are matched with the bottom edge of the hidden curtain shell to provide lower limit, so that a lower limit structure is formed, the limit is reliable, friction damage is avoided, the service life is long, the assembly connection is stable and reliable, and the operation is convenient.
The section of the lower shaft tube shell 4 is of a trapezoid structure; the main structure of the lower fixed shaft assembly 3 is a lower shaft rod, the lower shaft rod is formed by combining an upper shaft core 8 and a lower shaft core 9, a limiting groove is arranged between the upper shaft core 8 and the lower shaft core 9, the lower end of the projection curtain is limited and clamped in the limiting groove, and the projection curtain at least surrounds the outer surface of the lower shaft rod for a circle; the concrete installation mode is that the lower end of the projection curtain is penetrated from the limiting groove after bypassing the lower shaft core from top to bottom, and then enters the limiting groove downwards around the upper shaft core to be plugged.
Further, the lower shaft rod is a cylindrical rod, the outer surface of the upper shaft core 8 is a section of minor arc cylindrical surface, and the inner surface of the upper shaft core 8 is an upper curved surface formed by a section of chord surface with the middle part recessed towards the circumferential direction; the outer surface of the lower shaft core 9 is also a section of minor arc cylindrical surface, the inner surface of the lower shaft core 9 is a section of lower curved surface formed by the middle part of a chord surface protruding towards the direction of the circle center, and the upper curved surface and the lower curved surface are parallel to each other.
Further, the notch runs through the middle part of the top plate arranged on the lower shaft tube shell 4, and is stable and reliable.
Further, an arc-shaped upper limit rib 43 is arranged at the upper part of the inner cavity of the lower shaft tube shell 4, the inner surface of the upper limit rib is in a semicircular arc shape, and the upper limit rib provides upper support limit for the lower shaft rod; the notch extends downwards to penetrate through the upper limit rib.
Further, connecting holes 41 are symmetrically arranged between the upper limit ribs 43 and the top plate; a pair of connecting bosses are symmetrically arranged on the inner surface of the bottom plate, and each connecting boss is provided with a connecting hole; the end cover 2 is fixedly connected to the lower shaft tube shell through the cooperation of the connecting bolt and the connecting hole.
Further, the spring limiting assembly comprises a pair of inverted V-shaped sheet-shaped spring clamps, the outer side plate of each spring clamp is tightly attached to the inner side surface of the lower shaft tube shell, and the inner side plate of each spring clamp provides lower supporting and limiting for the lower shaft rod.
Further, the curtain tightness adjusting mechanism comprises a tightness adjusting bolt 11, and the horizontal position adjusting mechanism comprises a horizontal position adjusting bolt 12; the middle part of the end cover is provided with a through hole, a transition connecting block is arranged between the two ends of the lower shaft rod and the end cover, the outer section of the transition connecting block is rotatably arranged in the through hole, the inner end of the transition connecting block is provided with an adjusting groove, the end part of the lower shaft rod is provided with an adjusting boss, the adjusting boss is matched with the adjusting groove, and the end part of the lower shaft rod is connected to the transition connecting block through a horizontal position adjusting bolt.
Further, the tightness adjusting bolt is fixedly connected to the outer end face of the transition connecting block, and the lower shaft rod can be driven to rotate through the transition connecting block.
The lower shaft device of the hidden ceiling projection curtain is characterized in that the upper end of the projection curtain is fixedly arranged on a ceiling through a hidden curtain shell and a winding mechanism, and the lower end of the projection curtain extends into the lower shaft tube shell from a notch and is fixedly connected to a lower fixed shaft assembly; the lower fixed shaft assembly is fixed in the inner cavity of the lower shaft tube shell in a limiting way through the spring limiting assembly and the end cover; when the projection curtain rises, the limit flanges on two sides of the bottom plate of the lower shaft tube shell are matched with the bottom edge of the hidden curtain shell to provide lower limit, so that the lower limit structure is formed, the limit is reliable, friction damage is avoided, the service life is long, the assembly connection is stable and reliable, and the operation is convenient.
The utility model is not limited to the above-described alternative embodiments, and any person who may derive other various forms of products in the light of the present utility model, however, any changes in shape or structure thereof, all falling within the technical solutions defined in the scope of the claims of the present utility model, fall within the scope of protection of the present utility model.
Claims (9)
1. The utility model provides a lower axle device of hidden ceiling projection curtain which characterized in that: the projection curtain comprises a lower shaft tube shell and a projection curtain, wherein a lower fixed shaft assembly is arranged in an inner cavity of the lower shaft tube shell, a notch is formed in the lower shaft tube shell, and the projection curtain extends into the lower shaft tube shell from the notch and is fixedly connected to the lower fixed shaft assembly; the lower shaft tube shell is internally provided with a spring limiting assembly, two ends of the lower shaft tube shell are provided with end covers, and the lower fixed shaft assembly is fixed in the inner cavity of the lower shaft tube shell in a limiting manner through the spring limiting assembly and the end covers; limiting flanges extending outwards horizontally are arranged on two sides of a bottom plate of the lower shaft tube shell; the lower fixed shaft assembly is provided with a curtain tightness adjusting mechanism and a horizontal position adjusting mechanism.
2. The concealed ceiling projection curtain lower axis apparatus of claim 1 wherein: the section of the lower shaft tube shell is of a trapezoid structure; the lower fixed shaft assembly comprises a lower shaft rod, the lower shaft rod is formed by combining an upper shaft core and a lower shaft core, a limiting groove is formed between the upper shaft core and the lower shaft core, the lower end of the projection curtain is limited and clamped in the limiting groove, and the projection curtain at least surrounds the outer surface of the lower shaft rod for a circle.
3. The concealed ceiling projection curtain lower axis apparatus of claim 2 wherein: the lower shaft rod is a cylindrical rod, the outer surface of the upper shaft core is a section of minor-arc cylindrical surface, and the inner surface of the upper shaft core is an upper curved surface formed by a section of chord surface with the middle part recessed towards the circumferential direction; the outer surface of the lower shaft core is also a section of inferior arc cylindrical surface, the inner surface of the lower shaft core is a section of lower curved surface formed by the middle part of the chord surface protruding towards the direction of the circle center, and the upper curved surface and the lower curved surface are parallel to each other.
4. A lower spindle assembly for a concealed ceiling projection screen as set forth in claim 3, wherein: the notch penetrates through the middle of the top plate of the lower shaft tube shell.
5. The concealed ceiling projection curtain lower axis apparatus of claim 4 wherein: an arc-shaped upper limit rib is arranged at the upper part of the inner cavity of the lower shaft tube shell, the inner surface of the upper limit rib is in a semicircular arc shape, and the upper limit rib provides upper support limit for the lower shaft rod; the notch extends downwards to penetrate through the upper limit rib.
6. The concealed ceiling projection curtain lower axis apparatus of claim 5 wherein: connecting holes are symmetrically arranged between the upper limit ribs and the top plate; a pair of connecting bosses are symmetrically arranged on the inner surface of the bottom plate, and each connecting boss is provided with a connecting hole; the end cover is fixedly connected to the lower shaft tube shell through the matching of the connecting bolt and the connecting hole.
7. The concealed ceiling projection curtain lower axis apparatus of claim 6 wherein: the spring limiting assembly comprises a pair of inverted V-shaped sheet-shaped spring clamps, the outer side plate of each spring clamp is tightly attached to the inner side surface of the lower shaft tube shell, and the inner side plate of each spring clamp provides lower supporting and limiting for the lower shaft rod.
8. The concealed ceiling projection curtain lower axis apparatus of claim 7 wherein: the curtain tightness adjusting mechanism comprises a tightness adjusting bolt, and the horizontal position adjusting mechanism comprises a horizontal position adjusting bolt; the end cover middle part is provided with the through-hole, is provided with the transition connecting block between the both ends of lower axostylus axostyle and the end cover, and the outer section of transition connecting block rotationally sets up in the through-hole, and the inner of transition connecting block is provided with the regulation recess, and lower axostylus axostyle tip is provided with adjusts the boss, adjusts the boss cooperation and sets up in adjusting the recess, and lower axostylus axostyle tip passes through horizontal position adjusting bolt and connects on the transition connecting block.
9. The concealed ceiling projection curtain lower axis apparatus of claim 8 wherein: the tightness adjusting bolt is fixedly connected to the outer end face of the transition connecting block, and the lower shaft rod can be driven to rotate through the transition connecting block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222820762.9U CN219320639U (en) | 2022-10-26 | 2022-10-26 | Lower shaft device of hidden ceiling projection curtain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222820762.9U CN219320639U (en) | 2022-10-26 | 2022-10-26 | Lower shaft device of hidden ceiling projection curtain |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219320639U true CN219320639U (en) | 2023-07-07 |
Family
ID=87032726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222820762.9U Active CN219320639U (en) | 2022-10-26 | 2022-10-26 | Lower shaft device of hidden ceiling projection curtain |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219320639U (en) |
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2022
- 2022-10-26 CN CN202222820762.9U patent/CN219320639U/en active Active
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