CN212850758U

CN212850758U - Lifting device of projection television

Info

Publication number: CN212850758U
Application number: CN202022185529.9U
Authority: CN
Inventors: 李兆勇; 佘玉松; 张小兵
Original assignee: Sichuan Changhong Electric Co Ltd
Current assignee: Sichuan Changhong Electric Co Ltd
Priority date: 2020-09-29
Filing date: 2020-09-29
Publication date: 2021-03-30
Anticipated expiration: 2030-09-29

Abstract

The utility model relates to a lifting device of projection TV belongs to the projection TV field. The lifting device of the projection television comprises a bottom cover, a bracket and self-tapping screws. The bottom cover is provided with a first through hole in the end face, the support is provided with a screw column at the corresponding position of the first through hole, the screw column is provided with a screw hole in the end face, and the axis of the screw hole is superposed with the axis of the first through hole. The self-tapping screw comprises a connecting portion and a screw head portion, one end of the connecting portion is fixedly connected with the screw head portion, an external thread is arranged on the outer wall of the connecting portion, and the axis of the screw hole coincides with the axis of the external thread. The connecting part of the tapping screw penetrates through the first through hole to be in threaded connection with the screw hole of the support, and the head of the screw is a supporting leg of the support. The device avoids re-opening or repairing the shell, and can complete the adjustment of the height and the angle of the projection television.

Description

Lifting device of projection television

Technical Field

The utility model belongs to projection television shows the field, relates to a projection television's lifting device.

Background

The projection is ingenious, portable, miniaturized, entertaining and practical with the traditional huge projector, so that the projection technology is closer to life and entertainment, and the projector is widely applied to the fields of business, teaching, home audio and video and the like. But at the same time the industry is very competitive and only with low costs can market be preempted, which results in a projection that reduces unnecessary functions and parts during design. Due to the ever-changing market demands and the strong functions required in low price, the mass-produced products cannot meet the market demands, and the structural parts need to be opened or repaired again. The adjustment of the height and angle of the projection television requires the re-opening and repairing of the cabinet, which increases the product cost and the cost.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: the lifting device for the projection television is provided, and the device can be used for adjusting the height and the angle of the projection television by avoiding re-opening or repairing the shell.

In order to solve the technical problem, the utility model discloses a following technical scheme realizes: the lifting device of the projection television comprises a bottom cover, a bracket and self-tapping screws. The bottom cover is provided with a first through hole in the end face, the support is provided with a screw column at the corresponding position of the first through hole, the screw column is provided with a screw hole in the end face, and the axis of the screw hole is superposed with the axis of the first through hole. The self-tapping screw comprises a connecting portion and a screw head portion, one end of the connecting portion is fixedly connected with the screw head portion, an external thread is arranged on the outer wall of the connecting portion, the axis of a screw hole coincides with the axis of the external thread, the connecting portion of the self-tapping screw penetrates through the screw hole of the first through hole and is in threaded connection with the screw hole of the support, and the screw head portion is a supporting leg of the support.

Furthermore, a first sinking groove is formed in the end face, far away from the connecting portion, of the screw head, and a notch is formed in the bottom face of the first sinking groove.

The screw is characterized by further comprising a screw, wherein the side wall of the first sinking groove is provided with screw internal threads, the outer wall of the screw is provided with screw external threads, the axis of the screw internal threads and the axis of the screw external threads are overlapped, and the screw is in threaded connection with the head of the screw.

Further, still include the rubber pad, the rubber pad is connected with the one end fixed connection of screw rod.

Further, the rubber pad is internally provided with a second sinking groove, one end of the screw rod is fixedly connected with the bottom surface of the second sinking groove, and the head of the screw rod can be clamped into the second sinking groove.

Further, the inner side of the end face of the bottom cover is provided with a boss, the boss is provided with a second through hole, the axes of the second through hole and the first through hole are overlapped, and the connecting part can penetrate through the first through hole and the second through hole to be in threaded connection with the screw hole of the support.

Furthermore, the second through hole is provided with a third heavy groove on the end face of the boss, and the screw column can be clamped into the third heavy groove.

Furthermore, a fourth sinking groove is formed in the outer side of the end face of the bottom cover and corresponds to the first through hole in position, and the head of the screw can be clamped into the fourth sinking groove.

Further, the screw head is provided with a positioning piece in the direction perpendicular to the axis.

Furthermore, a positioning groove is formed in the outer side of the end face of the bottom cover, the head of the screw provided with the positioning piece can be clamped into the positioning groove, and the positioning groove corresponds to the first through hole.

The utility model has the advantages that: this lifting device of projection television, including bottom, support and self-tapping screw. The connecting part through the tapping screw connects the bottom cover and the support, and the height and the angle of the bottom cover can be adjusted by operating the screw head, so that the height and the angle of the projection television can be adjusted, the device avoids re-opening or repairing the shell, and the cost of products are reduced.

In addition, the introduction of the notch facilitates the operation of the tapping screw; the screw is introduced, so that not only is the screw head of the tapping screw protected in a sealing manner, but also the stability of the bottom cover and the support on the whole structure is ensured; the rubber pad can protect the screw, in order to further improve the protection effect, a second sinking groove is arranged in the rubber pad, and one end of the screw is fixedly connected with the bottom surface of the second sinking groove; the inner side of the end face of the bottom cover is provided with a boss, and the boss is provided with a second through hole for conveniently guiding and positioning the connecting part; the end face of the boss of the second through hole is provided with a third sink groove for conveniently positioning and guiding the screw column; a fourth sinking groove is formed in the outer side of the end face of the bottom cover, and is used for conveniently positioning and guiding the screw head; the head of the screw is provided with a positioning piece for enhancing the structural strength of the self-tapping screw and facilitating the installation and positioning of the self-tapping screw; the outer side of the end face of the bottom cover is provided with a positioning groove which is used for conveniently guiding and positioning a positioning piece at the head part of the screw.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the structure of the bottom cover and the bracket;

FIG. 3 is a schematic structural view of the tapping screw;

FIG. 4 is a schematic view of the assembly of the self-tapping screw with the threaded rod;

FIG. 5 is a schematic view of the assembly of a rubber gasket with a self-tapping screw and a threaded rod;

FIG. 6 is a schematic structural view of a third sinking groove and a fourth sinking groove;

FIG. 7 is a schematic view of a positioning element and a positioning slot.

Description of reference numerals: 1. a bottom cover; 11. a first through hole; 12. a boss; 13. a second through hole; 14. positioning a groove; 15. a third sink tank; 16. a fourth sink tank; 2. a support; 21. a screw post; 22. screw holes; 3. a self-tapping screw; 31. a connecting portion; 32. a screw head; 33. a positioning member; 35. a first sink tank; 36. an external thread; 37. a notch; 38. screw internal threads; 4. a screw; 41. external threads of the screw; 5. a rubber pad; 51. and a second sink tank.

Detailed Description

The present invention will be further explained with reference to the drawings and the embodiments.

The lifting device of the projection television, as shown in fig. 1, comprises a bottom cover 1, a bracket 2 and a tapping screw 3. The end face of the bottom cover 1 is provided with a first through hole 11, the support 2 is provided with a screw column 21 at a position corresponding to the first through hole 11, the end face of the screw column 21 is provided with a screw hole 22, and the axis of the screw hole 22 is superposed with the axis of the first through hole 11; the tapping screw 3 comprises a connecting portion 31 and a screw head portion 32, one end of the connecting portion 31 is fixedly connected with the screw head portion 32, an external thread 36 is arranged on the outer wall of the connecting portion 31, the axis of the screw hole 22 coincides with the axis of the external thread 36, the connecting portion 31 of the tapping screw 3 penetrates through the first through hole 11 to be in threaded connection with the screw hole 22 of the support 2, and the screw head portion 32 is a supporting leg of the support 2.

In order to facilitate the operation of the tapping screw, a first sunken groove 35 is formed in an end surface of the screw head 32 away from the connecting portion 31, and a notch 37 is formed in a bottom surface of the first sunken groove 35. The specific form of the notch 37 is not limited, and a cross-shaped groove or a straight groove can be selected. The tapping screws 3 connect the bottom cover 1 and the bracket 2, and the bottom cover 1 and the bracket 2 are adjusted in height and angle by operating the notches 37. The height is the change of the height of the bottom cover 1 from the ground level. The angle is through the operation to the notch, and bottom 1 and ground horizontal plane can produce certain angle to the projection angle of projection TV changes.

The first through-holes 11 are only required to ensure that the connection portions 31 of the tapping screws 3 can pass through the bottom cover 1. The support 2 is provided with a screw column 21 at the corresponding position of the bottom cover 1, the screw column 21 is provided with a screw hole 22 at the end surface thereof, and the screw hole 22 can be connected with the tapping screw 3 by screw thread as long as the screw hole 22 is ensured.

The threaded rod 4 is introduced for the purpose of sealing protection of the screw head 32 of the tapping screw 3 and for structural stability of the bottom cover and the holder. A screw internal thread 38 is arranged on the side wall of the first sinking groove 35, a screw external thread 41 is arranged on the outer wall of the screw 4, the axis of the screw internal thread 38 is coincident with the axis of the screw external thread 41, and the screw 4 is in threaded connection with the screw head 32.

In order to protect the screw rod 4, a rubber pad 5 is introduced, and the rubber pad 5 is fixedly connected with one end of the screw rod 4. In order to facilitate the limiting and fixing of the screw head 32 of the tapping screw 3, a second sunken groove 51 is formed in the rubber pad 5, one end of the screw rod 4 is fixedly connected with the bottom surface of the second sunken groove 51, and the screw head 32 can be clamped into the second sunken groove 51.

In order to guide and position the connecting part, a boss 12 is arranged on the inner side of the end face of the bottom cover 1, the boss 12 is provided with a second through hole 13, the axes of the second through hole 13 and the first through hole 11 are overlapped, and the connecting part 31 can penetrate through the first through hole 11 and the second through hole 13 to be in threaded connection with the screw hole 22 of the support 2. In order to position and guide the screw column 21 conveniently, a third sunk groove 15 is formed in the end face of the second through hole along the boss.

In order to conveniently position and guide the screw head, a fourth sinking groove 16 is formed in the outer side of the end face of the bottom cover 1, the fourth sinking groove 16 corresponds to the first through hole 11, and the screw head 32 can be clamped into the fourth sinking groove 16.

In order to reinforce the structural strength of the tapping screw 3 and facilitate the installation and positioning thereof, a positioning member 33 is provided in the direction perpendicular to the axis of the screw head 32. In order to guide and position the positioning part 33 of the screw head part 32 conveniently, the outer side of the end surface of the bottom cover 1 is provided with a positioning groove 17, the screw head part 32 provided with the positioning part 33 can be clamped into the positioning groove 17, and the positioning groove 17 corresponds to the position of the first through hole 11.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in other forms, and any person skilled in the art can use the above-mentioned technical contents to change or modify the present invention into equivalent embodiments with equivalent changes, but all those persons do not depart from the technical contents of the present invention, and any simple modification, equivalent changes and modifications made to the above embodiments according to the essence of the present invention still belong to the protection scope of the present invention.

Claims

1. The lifting device of the projection television is characterized by comprising a bottom cover (1), a bracket (2) and self-tapping screws (3); the end face of the bottom cover (1) is provided with a first through hole (11), the support (2) is provided with a screw column (21) at a position corresponding to the first through hole (11), the end face of the screw column (21) is provided with a screw hole (22), and the axis of the screw hole (22) is superposed with the axis of the first through hole (11); tapping screw (3) are including connecting portion (31) and screw head (32), connecting portion (31) one end and screw head (32) fixed connection, and connecting portion (31) are equipped with external screw thread (36) on the outer wall, screw hole (22) axis and external screw thread (36) axis coincidence, and screw hole (22) threaded connection of first through-hole (11) and support (2) is passed in connecting portion (31) of tapping screw (3), screw head (32) are the supporting legs of support (2).

2. The lifting device for the projection television as claimed in claim 1, wherein the screw head (32) is provided with a first sinking groove (35) at an end surface far away from the connecting portion (31), and a notch (37) is provided at a bottom surface of the first sinking groove (35).

3. The lifting device for the projection television of claim 2, further comprising a screw (4), wherein the side wall of the first sinking channel (35) is provided with a screw internal thread (38), the screw (4) is provided with a screw external thread (41) on the outer wall thereof, the axis of the screw internal thread (38) and the axis of the screw external thread (41) are coincident, and the screw (4) is in threaded connection with the screw head (32).

4. The lifting device for a projection television of claim 3, further comprising a rubber pad (5), wherein the rubber pad (5) is fixedly connected with one end of the screw rod (4).

5. The lifting device for the projection television as claimed in claim 4, wherein the rubber pad (5) is provided with a second sunken groove (51) therein, one end of the screw rod (4) is fixedly connected with the bottom surface of the second sunken groove (51), and the screw head (32) can be snapped into the second sunken groove (51).

6. The lifting device for the projection television as claimed in claim 1, wherein the inner side of the end face of the bottom cover (1) is provided with a boss (12), the boss (12) is provided with a second through hole (13), the axis of the second through hole (13) coincides with the axis of the first through hole (11), and the connecting part (31) can be threaded with the screw hole (22) of the bracket (2) through the first through hole (11) and the second through hole (13).

7. The lifting device for projection televisions of claim 6, wherein the second through hole (13) is provided with a third sunken groove (15) at the end face of the boss (12), and the screw post (21) can be snapped into the third sunken groove (15).

8. The lifting device for projection televisions as claimed in claim 1, wherein a fourth sunken groove (16) is formed in the outer side of the end face of the bottom cover (1), the fourth sunken groove (16) corresponds to the first through hole (11), and the screw head (32) can be snapped into the fourth sunken groove (16).

9. The lifting device for a projection television of claim 1, wherein the screw head (32) is provided with a positioning member (33) in a direction perpendicular to the axis.

10. The lifting device for projection televisions as claimed in claim 9, characterized in that a positioning groove (14) is provided on the outer side of the end face of the bottom cover (1), a screw head (32) provided with a positioning element (33) being capable of being snapped into the positioning groove (14), the positioning groove (14) corresponding to the position of the first through hole (11).