CN213601029U

CN213601029U - Electric ground extension projection screen

Info

Publication number: CN213601029U
Application number: CN202023048712.0U
Authority: CN
Inventors: 姜国旗
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-17
Filing date: 2020-12-17
Publication date: 2021-07-02
Anticipated expiration: 2030-12-17

Abstract

The utility model discloses an electric extending projection screen, which comprises a base; a cavity is arranged in the base and is sealed by an end cover; the inner buffer part of the cavity buffers the impact on the base when the end cover descends; in addition, the upper surface of the end cover is an arc surface, and the end cover is fixedly connected with the base through the first bolt and the second bolt, and the impact force between the end cover and the base is buffered by the buffer part, so that the problems that the gap between the end cover and the base is enlarged due to the impact between the end cover and the base of the existing equipment, dust easily enters the cavity and the normal use of the equipment is influenced are solved; in addition, the upper surface of the end cover is arc-shaped, the dust dredging function is achieved, then the two bolts are connected with the base, dust is dredged, the dust flows to the outer side of the base along the arc surface, and the problem that equipment is damaged due to the fact that the dust enters the cavity can be solved.

Description

Electric ground extension projection screen

Technical Field

The utility model relates to an electronic curtain technical field specifically is a projection curtain stretches electronically.

Background

With the wide spread of projection means, the projection means is applied to various occasions because of its good exhibition. However, the traditional electric curtain needs to be fixedly installed, so that the electric curtain is very inconvenient to use in certain occasions and places; although the existing electric projection equipment solves the problems, the existing electric projection equipment has the following problems that a gap is easy to appear due to the impact between an end cover and a base, and further dust enters the inside of the equipment to influence the use of the equipment;

meanwhile, the end cover of the existing equipment is planar, dust is easy to accumulate, can enter the base in a large amount at the moment of opening the end cover, and the problem that the equipment is easy to influence in use also exists.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an electrically-operated ground stretches projection curtain to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: an electric ground extension projection screen comprises a base, wherein a cavity for placing the projection screen is arranged in the base; the base is also provided with an end cover used for sealing the cavity, one surface of the end cover is an arc surface, and the other surface of the end cover is connected with a first slot and a second slot which are arranged on the base through a first bolt and a second bolt; the cavity is also internally provided with a buffer part for buffering the falling speed of the end cover, and the buffer part is fixed in the cavity through a support rod; a winder for winding the projection screen is further arranged inside the cavity, and a fixing frame for fixing the projection screen is further arranged on the end cover; the inside of end cover still is equipped with first fixed slot, just the inside of cavity still is equipped with the second fixed slot.

As the utility model discloses a preferred technical scheme: the base comprises a base plate, the one end of bottom plate is equipped with first circular arc board, just the other end of bottom plate is equipped with second circular arc board, and the bottom plate all is equipped with anti-skidding line with the one side of ground contact and first circular arc board with the outside one side of second circular arc face.

As the utility model discloses a preferred technical scheme: the joint of the first circular arc plate and the bottom plate and the joint of the second circular arc plate and the bottom plate are both provided with internal threaded holes; the first slot is arranged at one end of the first arc plate, which is far away from the bottom plate, and the second slot is arranged at one end of the second arc plate, which is far away from the bottom plate; the internal thread holes are also distributed on the other surfaces of the first slot and the second slot.

As the utility model discloses a preferred technical scheme: and a notch is formed in one end, far away from the bottom plate, of the second arc plate, and the notch is used for receiving the arc surface to dredge pull-down sundries.

As the utility model discloses a preferred technical scheme: and side covers with the same shape as the end surfaces of the base are arranged on the two side surfaces of the base, and the side covers are fixedly connected with the two end surfaces of the base through bolts and the connection of the internal thread holes.

As the utility model discloses a preferred technical scheme: and a first cambered surface is further arranged on the second inserting pin, a second cambered surface consistent with the first cambered surface in structure is further arranged on the second inserting pin, and the end cover is guided to be connected with the base through the adaptive connection of the first cambered surface and the second cambered surface.

As the utility model discloses a preferred technical scheme: the interior of the end cover is of a hollow structure.

Adopt above-mentioned technical scheme, the beneficial effects of the utility model are that: 1. because the device adopts the buffer part to buffer the impact force between the end cover and the base, the problem that the gap between the end cover and the base is enlarged due to the impact between the end cover and the base of the existing equipment, dust is easy to enter the cavity, and the normal use of the equipment is influenced is solved;

2. the upper surface of the end cover is arc-shaped, so that the dust is dredged, and then the dust is dredged by connecting the two bolts with the base, so that the dust flows to the outer side of the base along the arc surface, and the problem that equipment is damaged due to the fact that the dust enters the cavity can be solved.

Drawings

FIG. 1 is a schematic view of the main structure of the closed end cap and base of the present invention;

FIG. 2 is a schematic view of the main structure of the base and the end cap of the present invention after being opened;

fig. 3 is a partially enlarged schematic view of a portion a in fig. 2.

In the figure: 1. an end cap; 2. a base; 3. anti-skid lines; 4. an internally threaded bore; 5. a notch; 6. a winder; 7. a first fixing groove; 8. a second fixing groove; 9. a support bar; 10. a buffer section; 11. a first slot; 12. a first latch; 13. a circular arc surface; 14. a fixed mount; 15. a second bolt; 16. a first arc surface; 17. a second slot; 18. a cavity; 19. a first arc plate; 20. a second arc plate; 21. a base plate; 22. a second cambered surface.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention. In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "upper surface", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically connected, electrically connected or can communicate with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Referring to fig. 1-3, the present invention provides an embodiment: an electric extending projection screen comprises a base 2, wherein a cavity 18 for placing the projection screen is arranged inside the base 2; the cavity 18 is arranged to facilitate placement of related equipment of the electric projection screen, such as a lifting frame for lifting the projection screen, a winding motor for winding the projection screen, and the like;

the base 2 is also provided with an end cover 1 for sealing the cavity 18, one surface of the end cover 1 is an arc surface 13, and the other surface of the end cover 1 is connected with a first slot 11 and a second slot 17 which are arranged on the base 2 through a first bolt 12 and a second bolt 15 which are arranged; therefore, the arc surface 13 of the end cover 1 has the function of dredging dust, and then the connection between the two bolts and the base 2 is utilized, so that the dust is dredged, the dust flows to the outer side of the base 2 along the arc surface 13, and the problem of equipment damage caused by the dust entering the cavity 18 can be solved;

a buffer part 10 for buffering the falling speed of the end cover 1 is further arranged in the cavity 18, and the buffer part 10 is fixed in the cavity 18 through an arranged support rod 9; because the device adopts the buffer part 10 to buffer the impact force between the end cover 1 and the base 2, the problem that the gap between the end cover and the base is enlarged due to the impact between the end cover and the base of the existing equipment, dust easily enters the cavity, and the normal use of the equipment is influenced is solved;

because the inner part of the cavity 18 is also provided with the winder 6 for winding the projection screen and the end cover 1 is also provided with the fixing frame 14 for fixing the projection screen, the winder 6 is fixed and the reasonable arrangement of the winder 6 in the base 2 is facilitated;

a first fixing groove 7 is further formed in the end cover 1, and a second fixing groove 8 is further formed in the cavity 18; present electronic projection curtain all is equipped with a pair of telescopic folding leg at its back for support the projection curtain, consequently, the device can be fixed the upper end of folding leg through first fixed slot 7, and second fixed slot 8 can be fixed the lower extreme of folding leg simultaneously, and then makes the installation of folding leg and fixed simple and convenient, also makes the overall arrangement of folding leg more reasonable simultaneously.

In addition, most of the existing base structures of the electric projection screens are square and upright structures, so that the internal space of the base is not conveniently and fully utilized, and the base needs to be enlarged in size in order to prevent the working parts from interfering with each other.

In order to solve the above problems, the base 2 of the device comprises a bottom plate 21, wherein one end of the bottom plate 21 is provided with a first arc plate 19, the other end of the bottom plate 21 is provided with a second arc plate 20, and the surface of the bottom plate 21 contacting with the ground, the surface of the first arc plate 19 facing the outside of the second arc plate 20, and the surface of the second arc plate 20 facing the outside are both provided with anti-skid grains 3. Because the arc plates are arranged at the two ends of the bottom plate 21, the area of the inner cavity 18 of the device is larger, so that the arrangement of related parts is convenient, and the volume of the base 2 can be reduced; especially, the ends of the two arc plates far away from the bottom plate 21 are close to each other, so that the problem that the existing square and upright base occupies a large space is solved.

Further, the joint of the first circular arc plate 19 and the bottom plate 21 and the joint of the second circular arc plate 20 and the bottom plate 21 are both provided with an internal threaded hole 4; the first slot 11 is arranged at one end of the first circular arc plate 19 far away from the bottom plate 21, and the second slot 17 is arranged at one end of the second circular arc plate 20 far away from the bottom plate 21; the internal thread holes 4 are also distributed on the other surfaces of the first slot 11 and the second slot 17. Because two slots are arranged at the furling end of the base 2, the volume of the end cover 1 can be reduced, and the weight of the whole equipment is reduced.

Because the one end that the second circular arc board 20 kept away from bottom plate 21 still is equipped with notch 5 to accept through notch 5 circular arc face 13 dredges the debris that drop-down, the exterior structure of base 2 is not only optimized in the setting of notch 5 simultaneously, is convenient for in addition carry this equipment wholly through notch 5, and then makes the transport of device convenient.

In order to further achieve the hermetic closure of the cavity 18 and facilitate the installation of the related equipment into said cavity 18; all be equipped with on two sides of base 2 with the side cap that 2 terminal surface shapes of base are unanimous, through the bolt with the connection of internal thread hole 4 realizes the side cap with the fixed connection of two terminal surfaces of base 2, it is airtight with cavity 18 from two terminal surfaces of base 2 through the side cap, effectively avoids dust side end to get into cavity 18, and the side cap passes through the bolt and is connected with internal thread hole 4 simultaneously, and cavity 18 that consequently makes can expose completely, and then be convenient for install the relevant equipment of electronic projection curtain in cavity 18, unpack the side cap apart with the same reason, be convenient for again to the inside spare part of cavity 18, overhaul.

In order to facilitate the closing of the end cover 1 and the base 2, a first arc surface 16 is further arranged on the second bolt 15, a second arc surface 22 with the structure consistent with that of the first arc surface 16 is further arranged on the second slot 17, and the end cover 1 is guided to be connected with the base 2 through the adaptive connection of the first arc surface 16 and the second arc surface 22.

Because the inside of end cover 1 is hollow out construction, consequently further reduction end cover 1's weight, and then reduce the consumption that is used for lifting end cover 1 rising equipment, both realized the saving of the energy, reduced the weight of equipment again, can be airtight with cavity 18 again simultaneously, avoid the dust to get into.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in the embodiments without departing from the principles and spirit of the invention, and the scope of the invention is to be accorded the full scope of the claims.

Claims

1. An electrically-powered ground projection screen, comprising: comprises a base (2), and a cavity (18) for placing a projection screen is arranged in the base (2);

the base (2) is further provided with an end cover (1) used for sealing the cavity (18), one surface of the end cover (1) is an arc surface (13), and the other surface of the end cover (1) is connected with a first slot (11) and a second slot (17) which are arranged on the base (2) through a first bolt (12) and a second bolt (15) which are arranged;

a buffer part (10) for buffering the falling speed of the end cover (1) is further arranged in the cavity (18), and the buffer part (10) is fixed in the cavity (18) through a supporting rod (9);

a winder (6) for winding the projection screen is further arranged in the cavity (18), and a fixing frame (14) for fixing the projection screen is further arranged on the end cover (1);

the inner part of the end cover (1) is also provided with a first fixing groove (7), and the inner part of the cavity (18) is also provided with a second fixing groove (8).

2. An electrically-powered extendible projection screen as claimed in claim 1, wherein: base (2), including bottom plate (21), the one end of bottom plate (21) is equipped with first circular arc board (19), just the other end of bottom plate (21) is equipped with second circular arc board (20), and bottom plate (21) and the one side of ground contact and first circular arc board (19) with second circular arc board (20) all are equipped with non-slip texture (3) towards outside one side.

3. An electrically-powered extendible projection screen as claimed in claim 2, wherein: the joint of the first circular arc plate (19) and the bottom plate (21) and the joint of the second circular arc plate (20) and the bottom plate (21) are both provided with internal threaded holes (4);

the first slot (11) is arranged at one end, far away from the bottom plate (21), of the first circular arc plate (19), and the second slot (17) is arranged at one end, far away from the bottom plate (21), of the second circular arc plate (20);

the internal thread holes (4) are also distributed on the other surfaces of the first slot (11) and the second slot (17).

4. An electrically-powered extendible projection screen as claimed in claim 3, wherein: one end of the second arc plate (20) far away from the bottom plate (21) is also provided with a notch (5), and the notch (5) is used for bearing sundries pulled down by the arc surface (13).

5. An electrically-powered extendible projection screen as claimed in claim 4, wherein: the side covers are arranged on two side faces of the base (2) and are consistent with the end face shape of the base (2), and the side covers are fixedly connected with the two end faces of the base (2) through bolts and the connection of the internal thread holes (4).

6. An electrically-driven projection screen according to any one of claims 1-5, wherein: still be equipped with first cambered surface (16) on second bolt (15), just still be equipped with on second slot (17) with the second cambered surface (22) that first cambered surface (16) structure is unanimous, through first cambered surface (16) with the looks adaptation of second cambered surface (22) is connected, and then guide end cover (1) with the connection of base (2).

7. An electrically-powered extendible projection screen as claimed in claim 6, wherein: the interior of the end cover (1) is of a hollow structure.