CN220668922U - Desktop support for projection - Google Patents

Abstract

The utility model discloses a desktop bracket for projection, which comprises: the middle part of the annular frame is provided with an annular accommodating cavity, and the bottom of the annular frame is provided with a placing plane for contacting the tabletop; the support frame is arranged between two opposite inner side walls of the annular frame in a rotating mode around a horizontal axis, and can rotate to the upper side of the annular frame to be in a working state or rotate to the inside of the annular accommodating cavity to be in a storage state; the cradle head is arranged on the supporting frame and used for connecting projection equipment; the angle stabilizing mechanism is connected with the supporting frame and can enable the supporting frame to rotate for a certain angle relative to the annular frame and then to be stable. The desktop bracket for projection is rotated to the upper part of the annular frame by the support frame when in use, and the support frame is kept in a working state by the angle stabilizing mechanism; when not in use, the support frame is rotated into the annular accommodating cavity, the volume is small, the transportation and the carrying are convenient, and the support frame and the cradle head are protected by the annular frame, so that the damage is not easy to suffer.

Description

Desktop support for projection

Technical Field

The utility model relates to a desktop bracket for projection.

Background

In the related art, in order to mount a projector apparatus on a desktop, a desktop stand is generally required to mount the projector apparatus, the desktop stand generally includes a support portion for being placed on the desktop, the support portion is connected with a support frame extending upward above the desktop, and a cradle head for connecting an image apparatus is mounted on the support frame. In general, the supporting part and the supporting frame are of an integrated structure, so that the size of the desktop bracket is larger, and the desktop bracket cannot be stored into a smaller size, which is not beneficial to package and transportation.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides the desktop bracket for projection, which can be folded into a smaller volume, is convenient to transport and carry, is automatically stable when being unfolded, and has a very simple structure.

According to an embodiment of the utility model, a desktop stand for projection includes: the middle part of the annular frame is provided with an annular accommodating cavity, and the bottom of the annular frame is provided with a placing plane for contacting a tabletop; the support frame is arranged between two opposite inner side walls of the annular frame in a rotating mode around a horizontal axis, and can rotate to the upper side of the annular frame to be in a working state or rotate to the inside of the annular accommodating cavity to be in a storage state; the cradle head is arranged on the support frame and is used for connecting projection equipment; the angle stabilizing mechanism is connected with the supporting frame and can enable the supporting frame to rotate for a certain angle relative to the annular frame and then to be stable.

According to the embodiment of the utility model, the desktop bracket for projection has at least the following beneficial effects:

the desktop bracket for projection with the structure is rotated to the upper part of the annular frame by the support frame when in use, the support frame is kept in a working state by the angle stabilizing mechanism, and the support frame is connected with projection equipment through the cradle head; the desktop support rotates to the annular accommodating cavity by utilizing the support frame when not in use to be in a storage state, at the moment, the volume of the desktop support is smaller, the desktop support is convenient to transport and carry, and the support frame and the cradle head are protected by the annular frame, so that the desktop support is not easy to be damaged.

In some embodiments of the present utility model, the support frame is a U-shaped support, two ends of the U-shaped support are respectively penetrated through the annular frame by a bolt assembly, central axes of the two bolt assemblies are collinear with the horizontal axis, and when the U-shaped support is in the storage state, two opposite outer side walls of the U-shaped support are respectively correspondingly close to or abut against two opposite inner side walls of the annular frame.

In some embodiments of the utility model, the angle stabilizing mechanism comprises a spring member and a friction pad, wherein the spring member and the friction pad penetrate through the bolt assembly, one end of the spring member abuts against the annular frame, and the other end of the spring member abuts against the friction pad to the outer side wall of the U-shaped bracket.

In some embodiments of the present utility model, the ring frame is provided with two side ears protruding upwards, which are arranged face to face, the bolt assembly is arranged to penetrate through the side ears and the end parts of the U-shaped bracket, one of the outer side wall of the end part of the U-shaped bracket and the inner side wall of the side ears is provided with an arc guide groove arranged around the horizontal axis, the other is provided with a guide post extending between the arc guide grooves, and the guide post moves to one end of the arc guide groove to limit the support frame in the storage state or the working state.

In some embodiments of the present utility model, the angle stabilizing mechanism includes a support rod, one end of the support rod is rotatably disposed on the support frame, the other end of the support rod is used to abut against a tabletop corresponding to the annular accommodating cavity, and a triangle structure is enclosed among the support frame, the support rod and the tabletop.

In some embodiments of the present utility model, the support frame is disposed obliquely with respect to the annular frame when in the working state, and the support bar may rotate with respect to the support frame to be perpendicular to the annular frame to vertically support the table top.

In some embodiments of the present utility model, the annular frame is provided with a supporting inclined surface, and the supporting frame is plate-shaped, and a side surface of the supporting frame abuts against the supporting inclined surface to enable the supporting frame to be stable in the working state.

In some embodiments of the utility model, the support bar includes a connection section rotatably connected to the support frame and a support section telescopically adjustable along the connection section, the support section telescopically movable relative to the connection section to adjust the angular position of the support frame.

In some embodiments of the present utility model, an end of the support frame away from the horizontal axis is rotatably connected with a mounting seat through a rotating shaft assembly, the pan-tilt is fixedly arranged on the mounting seat, and a friction damping structure is arranged between the mounting seat and the rotating shaft assembly.

In some embodiments of the present utility model, the middle part of the support frame is provided with a avoidance notch capable of accommodating the support bar, the rotating shaft assembly includes a first screw and a second screw which are coaxially arranged, the first screw is arranged on one side of the mounting seat and the support frame so as to extend into the avoidance notch and be in threaded connection with the end part of the support bar, the second screw is arranged on the other side of the mounting seat and the support frame so as to extend into the avoidance notch and be in threaded connection with the end part of the support bar, and when one end of the support bar far away from the rotating shaft assembly swings to leave the avoidance notch, the first screw and the second screw are mutually close to each other along the axial direction so as to lock the angle position of the support bar.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

fig. 1 is a schematic structural view of a first embodiment of a desktop stand for projection according to the present utility model when a stand is in an operating state;

fig. 2 is a schematic structural view of the support frame in the embodiment of fig. 1 in a storage state;

FIG. 3 is a schematic view of an internal cross-section of the embodiment of FIG. 1;

FIG. 4 is a schematic view of a partial structure of the embodiment of FIG. 1 with the arcuate guide slot and guide post separated;

fig. 5 is a schematic structural view of a second embodiment of a desktop stand for projection according to the present utility model when a supporting frame is in an operating state;

fig. 6 is a schematic structural view of the support frame in the embodiment of fig. 5 in a storage state;

fig. 7 is a schematic internal cross-sectional view of the embodiment of fig. 5.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that references to orientation descriptions such as terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., are based on the orientation or positional relationship shown in the drawings, are merely for convenience of describing the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present utility model.

In the description of the present utility model, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1 and 2, or referring to fig. 5 and 6, a desktop stand for projection according to an embodiment of the present utility model includes: the annular frame 100, the middle part of the annular frame 100 has annular accommodation cavity 110, the bottom of the annular frame 100 has the placement level used for contacting the tabletop; the support frame 200 is rotatably arranged between two opposite inner side walls of the annular frame 100 around a horizontal axis, and the support frame 200 can be rotated above the annular frame 100 to be in a working state or rotated into the annular accommodating cavity 110 to be in a storage state; the cradle head 300 is arranged on the support frame 200 and is used for connecting projection equipment; the angle stabilizing mechanism is connected with the supporting frame 200, and can enable the supporting frame 200 to rotate for a certain angle relative to the annular frame 100 and then to be stable.

The desktop bracket for projection with the above structure is rotated to the upper part of the annular frame 100 by the support frame 200 when in use, the support frame 200 is kept in a working state by the angle stabilizing mechanism, and the support frame is connected with projection equipment through the cradle head 300; when not in use, the desktop bracket is rotated into the annular accommodating cavity 110 by the support frame 200 to be in a storage state, and at the moment, the volume of the desktop bracket is smaller, so that the desktop bracket is convenient to transport and carry, and the support frame 200 and the cradle head 300 are protected by the annular frame 100, so that the desktop bracket is not easy to be damaged.

Referring to fig. 1 to 3, in some embodiments of the present utility model, the support frame 200 is a U-shaped bracket, two ends of the U-shaped bracket are respectively penetrated through the annular frame 100 by a bolt assembly 500, central axes of the two bolt assemblies 500 are collinear with a horizontal axis, and when the U-shaped bracket is in a storage state, two opposite outer side walls of the U-shaped bracket are respectively and correspondingly close to or abut against two opposite inner side walls of the annular frame 100, so as to limit the U-shaped bracket from moving relative to the annular frame 100 along the central axis of the bolt assembly 500, which is beneficial to transportation of the tabletop bracket.

Referring to fig. 3, in some embodiments of the present utility model, the angle stabilizing mechanism includes a spring member 410 and a friction pad 420 that are threaded through a bolt assembly 500, one end of the spring member 410 abuts against the ring frame 100, and the other end of the spring member 410 pushes the friction pad 420 against the outer sidewall of the U-shaped bracket. It can be appreciated that the spring member 410 applies pressure to the friction pad 420, so that the static friction force between the friction pad 420 and the outer side wall of the U-shaped bracket can limit the rotation of the U-shaped bracket relative to the U-shaped bracket, and the magnitude of the static friction force between the friction pad 420 and the U-shaped bracket can be adjusted by adjusting the tightness of the bolt assembly 500 so as to adapt to different use requirements. In this embodiment, in order to reduce the influence of the downward swing of the U-shaped bracket caused by the projection device on the pan-tilt head 300, the U-shaped bracket is perpendicular to the ring frame 100 when in an operating state, the cradle head 300 comprises a base plate and a threaded column penetrating through the base plate and the U-shaped bracket, and the threaded column is vertically upwards arranged when the U-shaped bracket is in a working state.

Referring to fig. 4, in some embodiments of the present utility model, the ring frame 100 is provided with two upwardly protruding side ears 120 disposed to face each other, the bolt assembly 500 is inserted through the side ears 120 and the ends of the U-shaped bracket, one of the outer sidewall of the ends of the U-shaped bracket and the inner sidewall of the side ears 120 is provided with a circular arc guide groove 210 disposed around a horizontal axis, the other is provided with a guide post 130 extending between the circular arc guide grooves 210, and the guide post 130 is moved to one end of the circular arc guide groove 210 to define the support 200 in a storage state or an operating state. In this embodiment, the arc guiding groove 210 is disposed on the outer side wall of the end of the U-shaped bracket, the guiding post 130 is disposed on the inner side wall of the side ear 120, the corresponding angle of the arc guiding groove 210 is 180 °, when the supporting frame 200 rotates to the storage state, the guiding post 130 abuts against one end of the arc guiding groove 210, that is, the supporting frame 200 rotates clockwise or counterclockwise relative to the arc frame and can be switched to the storage state.

Referring to fig. 5 and 6, in some embodiments of the present utility model, the angle stabilizing mechanism includes a support rod 430, one end of the support rod 430 is rotatably disposed on the support frame 200, and the other end of the support rod 430 is used to abut against a tabletop corresponding to the annular accommodating cavity 110, where a triangular structure is enclosed between the support frame 200, the support rod 430 and the tabletop. In this embodiment, the desktop stand rotates the support frame 200 above the ring frame 100 when in use, and then rotates the support rod 430 on the support frame 200 to make the other end of the support rod 430 abut against the desktop, at this time, the support frame 200, the support rod 430 and the desktop enclose a triangle structure to stabilize the projection device on the pan-tilt 300, and no other locking structure is needed, thus greatly simplifying the structure of the desktop stand.

Referring to fig. 5, in some embodiments of the present utility model, in order to prevent the projection apparatus from tilting away from the support bar 430, the support bar 430 is disposed to be inclined with respect to the ring frame 100 when the support bar 200 is in an operating state, and the support bar 430 may be rotated with respect to the support bar 200 to be perpendicular to the ring frame 100 to vertically support the table top, so that the triangle structure forms a right triangle state, and the support bar 430 is used to stably support the support bar 200.

Referring to fig. 5, in some embodiments of the present utility model, in order to further improve the support stability, the ring frame 100 is provided with a support slope 140, the support frame 200 is plate-shaped, and a side surface of the support frame 200 abuts against the support slope 140 to stabilize the support frame 200 in an operating state. The support bracket 200 can be abutted against the support slope 140 to achieve a stable state even if the support bar 430 is biased to deform the triangle structure.

Referring to fig. 7, in some embodiments of the present utility model, the support bar 430 includes a connection section 431 rotatably connected to the support frame 200 and a support section 432 telescopically adjustable along the connection section 431, and the support section 432 telescopically moves with respect to the connection section 431 to adjust the angular position of the support frame 200. In this embodiment, the supporting section 432 is connected with the connecting section 431 through a threaded structure, and the length of the supporting rod 430 can be lengthened or shortened by screwing the supporting section 432, so that the angular position of the supporting frame 200 can be slightly adjusted, and meanwhile, the supporting section 432 can be ensured to be stably contacted with the tabletop. Preferably, the support sections 432 are in the shape of a truncated cone with a smaller top and a larger bottom, which is advantageous for increasing the contact area with the table top and thus improving the bearing stability.

Referring to fig. 7, in some embodiments of the present utility model, an end of the support frame 200 away from the horizontal axis is rotatably connected with a mounting seat 700 through a rotating shaft assembly, the pan-tilt head 300 is fixedly arranged on the mounting seat 700, and a friction damping structure 800 is provided between the mounting seat 700 and the rotating shaft assembly, that is, after the mounting seat 700 rotates a certain angle relative to the support frame 200, the mounting seat is stabilized under the action of the friction damping structure 800, so that the angle adjustment range of the projection apparatus is further enlarged.

Referring to fig. 7, in some embodiments of the present utility model, the middle of the support frame 200 is provided with a avoidance slot 220 capable of accommodating the support bar 430, the rotation shaft assembly includes a first screw 610 and a second screw 620 coaxially disposed, the first screw 610 is disposed through the mounting seat 700, the support frame 200 to extend into the avoidance slot 220 and be screwed to one side of the end of the support bar 430, the second screw 620 is disposed through the mounting seat 700, the support frame 200 to extend into the avoidance slot 220 and be screwed to the other side of the end of the support bar 430, and when the end of the support bar 430 far from the rotation shaft assembly swings to leave the avoidance slot 220, the first screw 610 and the second screw 620 are axially adjacent to each other to lock the angular position of the support bar 430. It can be appreciated that when the desktop stand is stored, the support bar 430 can be rotated to be stored in the avoidance slot 220, so that the support bar 430 does not protrude from the support frame 200, and then the support frame 200 and the support bar 430 are integrally rotated into the annular accommodating cavity 110, so that the size of the stored desktop stand is small. In this embodiment, the external threads of the first screw 610 and the second screw 620 are opposite in rotation direction, and when the user applies force to the support rod 430 to swing the support rod 430 outwards, the first screw 610 and the second screw 620 axially approach each other to make the support rod 430 in a tightening state, so that the triangle structure is more stable. Preferably, the friction damping structure 800 is a rubber sleeve sleeved outside the first screw 610 and the second screw 620, the rubber sleeve is tightly matched with a preset through hole of the mounting seat 700, and the rotating shaft assembly serves as a rotating shaft of the mounting seat 700 and a structure of the locking support rod 430, so that the compactness of the structure is improved.

The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A desktop stand for projection, comprising:

-an annular frame (100), the middle part of the annular frame (100) having an annular receiving cavity (110), the bottom of the annular frame (100) having a placement plane for contacting a table top;

the support frame (200) is rotatably arranged between two opposite inner side walls of the annular frame (100) around a horizontal axis, and the support frame (200) can be rotated above the annular frame (100) to be in a working state or rotated into the annular accommodating cavity (110) to be in a storage state;

the cradle head (300) is arranged on the supporting frame (200) and is used for connecting projection equipment;

the angle stabilizing mechanism is connected with the supporting frame (200) and can enable the supporting frame (200) to rotate for a certain angle relative to the annular frame (100) and then to be stable.

2. A desktop stand for projection according to claim 1, wherein:

the support frame (200) is a U-shaped support, two ends of the U-shaped support penetrate through the annular frame (100) through a bolt assembly (500), the central axes of the bolt assemblies (500) are collinear with the horizontal axis, and when the U-shaped support is in the storage state, two opposite outer side walls of the U-shaped support are respectively correspondingly close to or abutted to two opposite inner side walls of the annular frame (100).

3. A desktop stand for projection according to claim 2, wherein:

the angle stabilizing mechanism comprises a spring piece (410) and a friction gasket (420), wherein the spring piece (410) penetrates through the bolt assembly (500), one end of the spring piece (410) abuts against the annular frame (100), and the other end of the spring piece (410) abuts against the friction gasket (420) to the outer side wall of the U-shaped bracket.

4. A desktop stand for projection according to claim 3, wherein:

the annular frame (100) is provided with two protruding side lugs (120) which face to face, the bolt assembly (500) penetrates through the side lugs (120) and the end parts of the U-shaped support, one of the outer side walls of the end parts of the U-shaped support and the inner side walls of the side lugs (120) is provided with an arc guide groove (210) which is arranged around the horizontal axis, the other is provided with a guide post (130) which stretches into the space between the arc guide grooves (210), and the guide post (130) moves to one end of the arc guide groove (210) so as to limit the support frame (200) to the storage state or the working state.

5. A desktop stand for projection according to claim 1, wherein:

the angle stabilizing mechanism comprises a supporting rod (430), one end of the supporting rod (430) is rotatably arranged on the supporting frame (200), the other end of the supporting rod (430) is used for propping against a tabletop corresponding to the annular accommodating cavity (110), and a triangular structure is formed by encircling the supporting frame (200), the supporting rod (430) and the tabletop.

6. A desktop stand for projection according to claim 5, wherein:

the support frame (200) is obliquely arranged relative to the annular frame (100) when in the working state, and the support rod (430) can rotate relative to the support frame (200) to be perpendicular to the annular frame (100) so as to vertically support the tabletop.

7. A desktop stand for projection according to claim 6, wherein:

the annular frame (100) is provided with a supporting inclined plane (140), the supporting frame (200) is plate-shaped, and the side surface of the supporting frame (200) is abutted against the supporting inclined plane (140) so as to enable the supporting frame (200) to be stable in the working state.

8. A desktop stand for projection according to claim 6, wherein:

the support rod (430) comprises a connecting section (431) rotatably connected to the support frame (200) and a support section (432) capable of being telescopically adjusted along the connecting section (431), and the support section (432) can telescopically move relative to the connecting section (431) so as to adjust the angle position of the support frame (200).

9. A desktop stand for projection according to claim 5, wherein:

one end of the support frame (200) far away from the horizontal axis is rotationally connected with a mounting seat (700) through a rotating shaft assembly, the cradle head (300) is fixedly arranged on the mounting seat (700), and a friction damping structure (800) is arranged between the mounting seat (700) and the rotating shaft assembly.

10. A desktop stand for projection according to claim 9, wherein:

the middle part of support frame (200) is equipped with can the holding dodge notch (220) of bracing piece (430), pivot subassembly includes coaxial first screw rod (610) and second screw rod (620) that set up, first screw rod (610) wear to locate mount pad (700) support frame (200) with stretch into dodge notch (220) and threaded connection in one side of the tip of bracing piece (430), second screw rod (620) wear to locate mount pad (700) support frame (200) with stretch into dodge notch (220) and threaded connection in the opposite side of the tip of bracing piece (430), works as pivot subassembly's one end is kept away from swings to leaving dodge notch (220) when first screw rod (610) with second screw rod (620) are close to each other along the axial in order to lock the angular position of bracing piece (430).