CN215951027U

CN215951027U - Projector hanging bracket of multimedia teaching system

Info

Publication number: CN215951027U
Application number: CN202121432353.0U
Authority: CN
Inventors: 石婧睿
Original assignee: Baoding Institute Of Technology
Current assignee: Baoding Institute Of Technology
Priority date: 2021-06-27
Filing date: 2021-06-27
Publication date: 2022-03-04
Anticipated expiration: 2031-06-27

Abstract

The utility model discloses a projector hanging bracket of a multimedia teaching system, which comprises a punching-free telescopic rod, a longitudinal telescopic rod assembly and a mounting platform, wherein the longitudinal telescopic rod assembly is centrally assembled on the punching-free telescopic rod, the mounting platform is arranged at the tail end of the longitudinal telescopic rod assembly, closing claws are respectively and movably arranged on four side surfaces of the mounting platform, a transmission assembly is arranged on the mounting platform, and the transmission assembly is assembled to drive the four closing claws to approach the mounting platform so as to clamp a projector. The utility model provides a projector hanging bracket of a multimedia teaching system, which is additionally provided with a punching-free telescopic rod and a worm and gear transmission assembly, wherein the punching-free telescopic rod can realize punching-free installation, and is very convenient and quick to install and disassemble, and wide in application range; the transmission assembly can drive the closing claw to be close to or far away from the mounting platform, the projector can be clamped or put down quickly, the worm gear transmission has the advantage of self-locking, and the closing claw can be prevented from loosening.

Description

Projector hanging bracket of multimedia teaching system

Technical Field

The utility model relates to an auxiliary tool for a projector, in particular to a projector hanger.

Background

A projector is a device for projecting images and characters onto a screen, and is widely used in various occasions as the living standard of people improves. Projectors are also used in a wide variety of educational applications, particularly in ideological and political education. The projector is generally hung on a ceiling, and the height and the angle of the projector are adjusted under the fixation of the projector hanger. The installation of the projector hanger needs to be carried out by punching holes on the ceiling and then hoisting, and the use condition is greatly limited. However, in the aspect of ideological and political education, the projector needs to be moved frequently, so that the projector which is time-saving and labor-saving in installation and convenient to detach is required.

According to patent number CN210890907U, specifically disclose a projector hanger, including top fixed disk, projector mount and main body tube, the projector mount connects the middle disk through the joint bearing, the middle disk couples to main body tube; the joint bearings are at least three and are arranged symmetrically relative to the center of the middle disc, each joint bearing comprises an inner ring with an outer spherical surface and an outer ring with an inner spherical surface, the inner spherical surface of the outer ring and the outer spherical surface of the inner ring form a rolling friction pair, the outer ring is connected with an adjusting screw rod, an adjusting button is arranged on the middle disc, and the adjusting screw rod is in threaded fit with the adjusting button. Compared with the traditional projector hanging bracket, the projector hanging bracket can better realize the adjustment of the height and the angle of the projector.

Although it can realize the adjustment of the height and the angle of the projector, the projector still needs to be fixed on the ceiling, and the disassembly and the assembly are extremely inconvenient, which is a problem to be solved urgently.

SUMMERY OF THE UTILITY MODEL

In view of the above problems in the prior art, an object of the present invention is to provide a projector hanger for a multimedia teaching system, which can be mounted without punching and can be detached easily, and can be opened and closed by a worm gear to quickly clamp and fix a projector.

In order to achieve the purpose, the utility model provides a projector hanging bracket of a multimedia teaching system, which comprises a punching-free telescopic rod, a longitudinal telescopic rod assembly and a mounting platform, wherein the longitudinal telescopic rod assembly is centrally assembled on the punching-free telescopic rod, the mounting platform is arranged at the tail end of the longitudinal telescopic rod assembly, closing claws are respectively and movably arranged on four side surfaces of the mounting platform, a transmission assembly is arranged on the mounting platform, and the transmission assembly is assembled to drive the four closing claws to approach the mounting platform so as to clamp a projector.

As preferred, the telescopic link of exempting from to punch includes elastic support subassembly, threaded rod, lock nut, internal thread pipe and fixed horizontal pole, fixed horizontal pole both ends difference fixed mounting has the threaded rod, threaded connection has lock nut on the outside of threaded rod, internal thread pipe thread connects on the threaded rod to support through lock nut and keep off, so that the threaded rod locks and dies, elastic support subassembly endwise slip sets up in the one end of the relative threaded rod of internal thread pipe.

Preferably, the elastic support assembly comprises a rubber non-slip pad, a base, a spring, a first shell and a limiting tube, the limiting tube is fixedly installed at one end of the threaded rod relative to the internal threaded tube, the limiting tube is provided with a boring hole relative to one end of the internal threaded tube, the spring is installed in the boring hole, the shell is sleeved on the limiting tube, the spring is assembled to push the first shell, one end of the limiting tube relative to the first shell is provided with the base, and the outer wall of the base is covered with the rubber non-slip pad.

Preferably, the longitudinal telescopic rod assembly comprises an adjusting rod, an adjusting head and a connecting rod, a clamping groove is formed in the top end of the connecting rod, the fixed cross rod is clamped in the clamping groove, the connecting rod is sleeved on one end of the adjusting rod in a sliding mode, the length of the combination of the connecting rod and the adjusting rod is adjustable through a bolt, and the mounting platform is movably connected with the adjusting rod through the adjusting head.

Preferably, the side wall of the fixed cross bar is provided with unthreaded holes distributed in a linear array, the clamping groove on the connecting rod is provided with a bolt matched with the unthreaded holes, and the connecting rod is fixed on the fixed cross bar through the bolt and the unthreaded holes.

Preferably, the transmission assembly comprises a worm, a worm wheel, a driving gear, a driven gear, a second shell and a third shell, a second shell is fixedly arranged at the bottom of the adjusting head, a worm is axially and rotatably arranged on the inner wall of one side of the second shell, a knob fixedly connected with the worm is arranged on the outer wall of one side of the second shell, a third shell is fixedly arranged at the bottom of the second shell, the top of the inner side of the second shell is axially and rotatably provided with a shaft lever, the other end of the shaft lever is axially and rotatably arranged at the bottom of the inner side of the third shell, the shaft lever is symmetrically provided with a worm gear positioned in the second shell and a driving gear positioned in the third shell, the four combined claws are all assembled in the third shell, and the inside axial of the third shell is provided with driven gears in a rotating way, and the four driven gears are in circumferential array relative to the driving gears and are meshed with the driving gears.

Advantageous effects

Compared with the prior art, the utility model provides a projector hanging bracket of a multimedia teaching system, which has the following beneficial effects: according to the scheme, the punching-free telescopic rod and the worm and gear transmission assembly are added, so that the punching-free telescopic rod can realize punching-free installation, the installation and the disassembly are very convenient, and the application range is wide; the transmission assembly can drive the closing claw to approach to the mounting platform or keep away from the mounting platform, the projector is clamped or loosened quickly, the worm gear transmission has the advantage of self-locking, and the closing claw can be prevented from loosening.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

This document provides an overview of various implementations or examples of the technology described in this disclosure, and is not a comprehensive disclosure of the full scope or all features of the disclosed technology.

Drawings

In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.

FIG. 1 is a schematic diagram of an overall structure provided in an embodiment of the present invention;

fig. 2 is a schematic structural view of a telescopic portion of the telescopic rod according to the embodiment of the present invention;

FIG. 3 is a schematic structural diagram of an elastic support assembly according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of an overall structure of a mounting platform according to an embodiment of the present invention;

FIG. 5 is a schematic side sectional view of a mounting platform according to an embodiment of the present invention;

fig. 6 is a schematic cross-sectional view of a bottom surface of the mounting platform according to an embodiment of the present invention.

Description of reference numerals:

1. a punching-free telescopic rod; 11. an elastic support member; 111. a rubber non-slip mat; 112. a base; 113. a spring; 114. a first shell; 115. a limiting pipe; 12. a threaded rod; 13. locking the nut; 14. an internally threaded tube; 15. fixing the cross bar; 2. a longitudinally telescoping rod assembly; 21. adjusting a rod; 22. an adjustment head; 23. a link rod; 3. Mounting a platform; 31. a transmission assembly; 311. a worm; 312. a worm gear; 313. a driving gear; 314. a driven gear; 315. a second shell; 316. a third shell; 32. and (5) closing the claws.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be described below clearly and completely with reference to the accompanying drawings of the embodiments of the present disclosure. It is to be understood that the described embodiments are only a few embodiments of the present disclosure, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the disclosure without any inventive step, are within the scope of protection of the disclosure.

Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of the word "comprising" or "comprises", and the like, in this disclosure is intended to mean that the elements or items listed before that word cover the elements or items listed after that word and their equivalents, without excluding other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may also include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

To maintain the following description of the embodiments of the present disclosure clear and concise, a detailed description of known functions and known components have been omitted from the present disclosure.

Referring to fig. 1-6, a projector hanger of a multimedia teaching system includes a non-punching telescopic rod 1, a central longitudinal telescopic rod assembly 2 assembled on the non-punching telescopic rod 1, and a mounting platform 3 disposed at the tail end of the longitudinal telescopic rod assembly 2, wherein four side surfaces of the mounting platform 3 are respectively and movably provided with a closing claw 32, the mounting platform 3 is provided with a transmission assembly 31, and the transmission assembly 31 is assembled to drive the four closing claws 32 to approach the mounting platform 3 to clamp a projector.

Further combine fig. 1-2, exempt from telescopic link 1 that punches includes elastic support subassembly 11, threaded rod 12, lock nut 13, internal thread pipe 14 and fixed horizontal pole 15, fixed horizontal pole 15 both ends respectively fixed mounting have threaded rod 12, threaded connection has lock nut 13 on the outside of threaded rod 12, internal thread pipe 14 threaded connection is on threaded rod 12 to support through lock nut 13 and keep off, so that internal thread pipe 14 locks, elastic support subassembly 11 axial slip sets up in the one end of the relative threaded rod 12 of internal thread pipe 14. Make the telescopic link 1 that exempts from to punch extend through rotating internal thread pipe 14, make elastic support component 11 hug closely the wall, when the wall gives the holding power that exempts from to punch telescopic link 1 and reaches the biggest, screw up lock nut 13 and make the length of exempting from to punch telescopic link 1 fixed.

As shown in fig. 2, the elastic support component 11 includes a rubber anti-slip pad 111, a base 112, a spring 113, a first housing 114 and a limiting tube 115, the limiting tube 115 is fixedly installed at one end of the internal threaded tube 14 opposite to the threaded rod 12, a boring hole is formed in one end of the limiting tube 115 opposite to the internal threaded tube 14, the spring 113 is installed in the boring hole, the first housing 114 is sleeved on the limiting tube 115, the spring 113 is assembled to push the first housing 114, the base 112 is arranged at one end of the first housing 114 opposite to the limiting tube 115, the outer wall of the base 112 is covered with the rubber anti-slip pad 111, the friction coefficient between the non-punching telescopic rod 1 and the wall is increased, and the non-punching telescopic rod 1 is prevented from slipping downwards in the using process. At the in-process of exempting from to punch the extension of telescopic link 1, spring 113 can receive the extrusion behind hugging closely the wall elastic support subassembly 11, can give exempting from to punch telescopic link 1 power after spring 113 receives the extrusion, and what the messenger exempted from to punch telescopic link 1 can be better props on the wall.

As shown in FIG. 1, the longitudinal telescopic rod assembly 2 comprises an adjusting rod 21, an adjusting head 22 and a link rod 23, wherein a slot is formed at the top end of the link rod 23, the fixed cross rod 15 is clamped in the slot, the link rod 23 is slidably sleeved on one end of the adjusting rod 21, the length of the combination of the link rod 23 and the adjusting rod 21 is adjustable through a bolt, and the mounting platform 3 is movably connected with the adjusting rod 21 through the adjusting head 22. The height of the projector is changed by adjusting the adjusting rod 21, and the angle of the projector is changed by adjusting the adjusting head 22, so that the picture projected by the projector reaches the optimal state.

As shown in fig. 1, the side wall of the fixed cross bar 15 is provided with light holes distributed in a linear array, and the slot on the link rod 23 is provided with a bolt matched with the light holes, so that the link rod 23 is fixed on the fixed cross bar 15 through the bolt and the light holes. Through changing the corresponding relation of bolt and unthreaded hole, realize the horizontal migration of vertical telescopic link subassembly 2, make the working effect of projecting apparatus better.

With reference to fig. 4-6, the transmission assembly 31 includes a worm 311, a worm wheel 312, a driving gear 313, a driven gear 314, a second casing 315 and a third casing 316, the bottom of the adjusting head 22 is fixedly installed with the second casing 315, the inner wall of one side of the second casing 315 is axially and rotatably installed with the worm 311, the outer wall of one side of the second casing 315 is provided with a knob fixedly connected with the worm 311, the bottom of the second casing 315 is fixedly installed with the third casing 316, the top of the inner side of the second casing 315 is axially and rotatably installed with a shaft rod whose other end is axially and rotatably installed at the bottom of the inner side of the third casing 316, and the shaft lever is symmetrically provided with a turbine 312 positioned inside a second shell 315 and a driving gear 313 positioned inside a third shell 316, four engaging claws 32 are all assembled inside the third shell 316, and the interior of the housing three 316 is provided for axial rotation with driven gears 314, four driven gears 314 being in circumferential array about and meshing with the drive gear 313. The worm 311 is driven to rotate by rotating the knob, the worm 311 drives the worm wheel 312 to rotate, the worm wheel 312 drives the driving gear 313 to rotate, the driving gear 313 drives the driven gear 314 meshed with the driving gear to rotate, the driven gear 314 is meshed with the rack on the side wall of the closed claw 32, the driven gear 314 drives the closed claw 32 to horizontally move, and the closed claw 32 is driven to open and close to loosen or clamp the projector.

The working principle is as follows: when a projector hanger is installed, after a proper position is found, the internal threaded pipe 14 is rotated to extend the punching-free telescopic rod 1, the internal threaded pipe 14 is continuously rotated after the two elastic supporting components 11 contact with a wall, the spring 113 is compressed, the spring 113 can provide a force for the punching-free telescopic rod 1, when the supporting force provided by the punching-free telescopic rod 1 by the wall is strongest, the locking nut 13 is screwed to fix the length of the punching-free telescopic rod 1, the longitudinal telescopic rod component 2 is fixed on the fixed cross rod 15 by using a bolt, the closing claw 32 is opened by rotating the knob, a projector is placed in the projector, the knob is rotated to enable the closing claw 32 to approach to the installation platform 3 to clamp the projector, and the adjusting rod 21 and the adjusting head 22 are adjusted to enable the working effect of the projector to be best; when dismantling the projecting apparatus gallows, rotate the knob and make and close claw 32 and open, take off the projecting apparatus, rotate the knob and make and close claw 32 and resume initial position, pull down the bolt, take off vertical telescopic link subassembly 2, unscrew lock nut 13, rotate internal thread pipe 14 and make the telescopic link 1 that exempts from to punch shorten, take off the telescopic link 1 that exempts from to punch.

While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the utility model. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the utility model.

Claims

1. The utility model provides a multimedia teaching system's projecting apparatus gallows, its characterized in that, including exempt from to punch telescopic link (1), assemble placed in the middle in exempt from to punch longitudinal extension pole subassembly (2) on telescopic link (1) and set up in mounting platform (3) of longitudinal extension pole subassembly (2) tail end, four sides of mounting platform (3) are movable respectively and are provided with and close claw (32), be provided with drive assembly (31) on mounting platform (3), drive assembly (31) are assembled and are used for ordering about four and close claw (32) and draw close with the centre gripping projecting apparatus to mounting platform (3).

2. The projector hanging bracket of the multimedia teaching system as claimed in claim 1, wherein the hole-free telescopic rod (1) comprises an elastic support component (11), a threaded rod (12), a locking nut (13), an internal threaded tube (14) and a fixed cross rod (15), the threaded rod (12) is fixedly mounted at each of two ends of the fixed cross rod (15), the locking nut (13) is connected to the outer side of the threaded rod (12) in a threaded manner, the internal threaded tube (14) is connected to the threaded rod (12) in a threaded manner and is blocked by the locking nut (13) to lock the threaded rod (12), and the elastic support component (11) is axially slidably arranged at one end of the internal threaded tube (14) relative to the threaded rod (12).

3. The projector hanger of the multimedia teaching system as claimed in claim 2, wherein the elastic support assembly (11) comprises a rubber anti-slip pad (111), a base (112), a spring (113), a first shell (114) and a limiting tube (115), the limiting tube (115) is fixedly mounted at one end of the internally threaded tube (14) opposite to the threaded rod (12), a bored hole is formed at one end of the limiting tube (115) opposite to the internally threaded tube (14), the spring (113) is mounted in the bored hole, the first shell (114) is sleeved on the limiting tube (115), the spring (113) is assembled to push against the first shell (114), the base (112) is arranged at one end of the first shell (114) opposite to the limiting tube (115), and the outer wall of the base (112) is covered with the rubber anti-slip pad (111).

4. The projector hanger of the multimedia teaching system as claimed in claim 1, wherein the longitudinal extensible rod assembly (2) comprises an adjusting rod (21), an adjusting head (22) and a link rod (23), a slot is formed at the top end of the link rod (23), the fixed cross rod (15) is clamped in the slot, the link rod (23) is slidably sleeved on one end of the adjusting rod (21), the length of the combination of the link rod (23) and the adjusting rod (21) is adjustable through a bolt, and the mounting platform (3) is movably connected with the adjusting rod (21) through the adjusting head (22).

5. The hanger for projectors of claim 4, wherein the side wall of the fixed rail (15) is formed with light holes distributed in a linear array, the locking slot of the link rod (23) is formed with a bolt matching with the light holes, and the link rod (23) is fixed on the fixed rail (15) through the bolt and the light holes.

6. The projector hanger of the multimedia teaching system as claimed in claim 4, wherein the transmission assembly (31) comprises a worm (311), a worm wheel (312), a driving gear (313), a driven gear (314), a second shell (315) and a third shell (316), the second shell (315) is fixedly installed at the bottom of the adjusting head (22), the worm (311) is axially and rotatably installed on the inner wall of one side of the second shell (315), a knob fixedly connected with the worm (311) is arranged on the outer wall of one side of the second shell (315), the third shell (316) is fixedly installed at the bottom of the second shell (315), a shaft rod is axially and rotatably installed at the bottom of the inner side of the third shell (316) at the other end of the top of the inner side of the second shell (315) is axially and rotatably installed at the top of the inner side of the second shell (315), and the worm wheel (312) and the shaft rod which are symmetrically arranged inside the second shell (315) are symmetrically arranged, The driving gear (313) is located inside the third shell (316), the four combined claws (32) are assembled inside the third shell (316), driven gears (314) are axially and rotatably arranged inside the third shell (316), and the four driven gears (314) are circumferentially arrayed around the driving gear (313) and meshed with the driving gear.