CN216772183U - Screen convenient to adjust tight dynamics that rises - Google Patents

Abstract

The utility model discloses a screen convenient for adjusting tension force in the technical field of projection auxiliary devices, which comprises a mounting frame, a winding roller, a screen, a mounting column, a sliding sleeve, a cross rod, a limiting block, a sliding ring, a roller support, a roller, a clamping groove and an elastic driving piece, wherein the elastic driving piece drives the sliding ring to move and can buffer the movement of the sliding ring in the direction away from the limiting block. Compared with the prior art, the utility model has the beneficial effects that: move towards the direction of stopper through the slip ring for the gyro wheel rolls on the draw-in groove inner bottom wall, and then the drive sliding sleeve moves down, realizes carrying out tensile tensioning to the curtain, so that the tensioning of curtain need not the manual work and operates, and when the curtain surface received the extrusion, can cushion, avoids the curtain to produce the damage.

Description

Screen convenient to adjust tight dynamics that rises

Technical Field

The utility model relates to the technical field of projection auxiliary devices, in particular to a screen convenient for adjusting tension.

Background

A screen for showing film is made up of white cloth, the diffuse reflection screen made of cloth blank coated with barium sulfate or metal powder or plastics, the reflection screen made of glass bead paint, and the transmission screen made of semi-transparent material.

Through the retrieval, chinese patent No. CN208654530U discloses a overspeed device tensioner for screen, including the backup pad, the bottom fixedly connected with bottom plate of backup pad, just the bottom fixed mounting of bottom plate has the support, the roof fixedly connected with casing of backup pad lateral wall, the inside of casing is equipped with the pivot, the equal welded fastening in both sides of pivot surface has the bearing.

The screen among the above-mentioned prior art is when using, through the pulling fixed plate downwards, make the fixed plate when driving the lifting hook and remove downwards, the lifting hook can stretch the curtain through the lantern ring, the tensioning operation, guarantee the planarization of curtain, this kind of mode needs the manual work to operate, make the operation comparatively inconvenient and loaded down with trivial details, this kind of mode can make the screen receive when extrudeing in addition, because the screen remains the tensioning state throughout can lead to the screen to receive the extrusion and can't cushion the protection, and then lead to the screen damaged.

Based on the above, the utility model designs the screen convenient for adjusting the tensioning force, so as to solve the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a screen convenient for adjusting tension force, and aims to solve the problems that when the screen in the prior art provided by the background art is used, a fixed plate is pulled downwards, so that when the fixed plate drives a lifting hook to move downwards, the lifting hook can stretch and tension a screen through a collar, and the smoothness of the screen is ensured.

In order to achieve the purpose, the utility model provides the following technical scheme: a screen convenient for adjusting tension force comprises a mounting rack with two longitudinal rods and a cross rod, wherein the upper end part of the mounting rack is horizontally and rotatably connected with a winding roller, a curtain is wound on the winding roller, one end of the curtain which is not wound on the winding roller is fixedly connected on a mounting column, two ends of the mounting column are respectively and fixedly connected with a sliding sleeve, the two sliding sleeves are respectively sleeved on the two longitudinal rods of the mounting rack and can freely slide up and down, the lower end part of the mounting rack is horizontally and fixedly connected with a cross rod, the mounting column is provided with a limiting block extending downwards, the cross rod is sleeved with a sliding ring, the sliding ring can freely slide on the cross rod, a roller support is arranged on the sliding ring, the roller support is rotatably connected with a roller, the limiting block is provided with a through hole type clamping groove, the inner bottom wall of the clamping groove is an inclined plane, the outer periphery of the roller is in rolling contact with the inner bottom wall of the clamping groove, the elastic driving piece is arranged on the cross rod and drives the sliding ring to move and can buffer the movement of the sliding ring in the direction away from the limiting block.

In the screen convenient for adjusting the tensioning force, the elastic driving member includes an electromagnet sleeved on the cross rod, the sliding ring is made of a magnetic material, the cross rod is sleeved with a buffer spring, and two ends of the buffer spring in the elastic direction respectively elastically abut against the sliding ring and the electromagnet.

In the screen convenient for adjusting the tensioning force, the bottoms of the two longitudinal rods are connected with the base through the buffer piece.

In the screen convenient to adjust the tension force, the buffer member comprises two protruding portions arranged on the base, the two protruding portions are respectively rotatably connected with the two longitudinal rods, the longitudinal rods are sleeved with the limiting rings and are further sleeved with the return springs, and two ends of the return springs in the elastic direction respectively elastically abut against the limiting rings and the protruding portions.

In the screen convenient to adjust the tensioning force, the lower end of the longitudinal rod is coaxially and fixedly connected with the bulb, and the convex part is provided with the spherical clamping groove for clamping the bulb and capable of freely rotating.

Compared with the prior art, the utility model has the beneficial effects that: move towards the direction of stopper through the slip ring for the gyro wheel rolls on the diapire in the draw-in groove, and then the drive sliding sleeve moves down, realizes carrying out tensile tensioning to the curtain, so that the tensioning of curtain need not the manual work and operates, and when the curtain surface received the extrusion, can cushion, avoids the curtain to produce the damage, in addition through setting up the bolster, when making the mounting bracket receive the collision, can cushion the protection, avoids the curtain to produce the damage.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of the final assembly of the present invention;

FIG. 2 is a schematic partial cross-sectional view of the structure of FIG. 1;

FIG. 3 is an enlarged view of a portion of the structure at A in FIG. 2;

fig. 4 is an enlarged schematic view of a partial structure at B in fig. 2.

In the drawings, the components represented by the respective reference numerals are listed below:

1-winding roller, 2-mounting frame, 3-mounting column, 4-sliding sleeve, 5-cross bar, 6-electromagnet, 7-base, 8-bulge, 9-reset spring, 10-limiting ring, 11-sliding ring, 12-limiting block, 13-roller bracket, 14-curtain, 15-ball head, 16-clamping groove, 17-roller and 18-buffer spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a screen convenient for adjusting tension force comprises a mounting frame 2 with two longitudinal rods and a cross rod, the upper end of the mounting frame 2 is horizontally and rotatably connected with a winding roller 1, a curtain 14 is wound on the winding roller 1, one end of the curtain 14 which is not wound on the winding roller 1 is fixedly connected on a mounting column 3, two ends of the mounting column 3 are respectively and fixedly connected with a sliding sleeve 4, the two sliding sleeves 4 are respectively sleeved on the two longitudinal rods of the mounting frame 2 and can freely slide up and down, the lower end of the mounting frame 2 is horizontally and fixedly connected with a cross rod 5, the mounting column 3 is provided with a limiting block 12 extending downwards, the cross rod 5 is sleeved with a sliding ring 11, the sliding ring 11 can freely slide on the cross rod 5 and is provided with a roller support 13, the roller support 13 is rotatably connected with a roller 17, the limiting block 12 is provided with a clamping groove 16 in a through hole form, the inner bottom wall of the clamping groove 16 is an inclined plane, the outer periphery of the roller 17 is in rolling contact with the inner bottom wall of the clamping groove 16, the cross bar 5 is provided with an elastic driving part which drives the sliding ring 11 to move and can buffer the movement of the sliding ring 11 towards the direction far away from the limiting block 12, by pulling the mounting post 3 downwards, the sliding sleeve 4 slides downwards on the longitudinal rod, so that the winding roller 1 can rotate and unwind the curtain 14, after the sliding sleeve 4 slides in place, the elastic driving part drives the sliding ring 11 to slide towards the direction of the limiting block 12, and the roller 17 rolls into the clamping groove 16 and generates a resisting force to the inner bottom wall of the clamping groove 16, and further drives the limiting block 12 to move downwards, thereby realizing the stretching and tensioning of the curtain, and when the curtain is extruded, the curtain is sunken and the limiting block 12 moves upwards, at the moment, the bottom wall in the clamping groove 16 is abutted against the roller 17, the roller 17 and the sliding ring 11 move in the direction away from the limiting block 12, so that the curtain can be prevented from being damaged due to extrusion.

In this embodiment, the elastic driving piece is including cup jointing electro-magnet 6 on horizontal pole 5, slip ring 11 is made by the magnetic conduction material, the cover is equipped with buffer spring 18 on horizontal pole 5, buffer spring 18 elasticity direction both ends are elasticity respectively and are supported slip ring 11, electro-magnet 6, when opening a book the curtain, at first, produce magnetism through electro-magnet 6 circular telegram, and drive slip ring 11 slides towards electro-magnet 6's direction, until sliding sleeve 4 slides down the back that targets in place, break off electro-magnet 6's power again, make buffer spring 18 produce elasticity to slip ring 11 and support, and then drive slip ring 11 slides towards stopper 12's direction, go into draw-in groove 16 until gyro wheel 17 card, need not the manual work and operate.

In this embodiment, the bottoms of two vertical poles are connected with base 7 through the bolster jointly, through setting up the bolster for mounting bracket 2 can have the buffering protection when receiving the collision.

In this embodiment, the bolster is including locating two bulges 8 on base 7, two bulges 8 rotate with two vertical poles respectively and are connected, the cover is equipped with spacing ring 10 on the vertical pole, and still the cover is equipped with reset spring 9 on it, 9 elasticity direction both ends of reset spring are elasticity respectively and are supported spacing ring 10, bulge 8, when the vertical pole of mounting bracket 2 receives the collision, the vertical pole will produce the swing, and then make reset spring 9 produce the bending, when the collision force withdraws, reset spring 9 will be resumeed by the bending state, and then drive the reverse swing of vertical pole and reset, make and to cushion the protection to the vertical pole.

In this embodiment, the coaxial rigid coupling of vertical pole lower extreme has bulb 15, offers on the bulge 8 to supply 15 blocks of bulb, and spherical draw-in groove that can the free rotation, through bulb 15 rotation and spacing in spherical draw-in groove for vertical pole and bulge 8 rotate to be connected.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the utility model disclosed above are intended to be illustrative only. The preferred embodiments are not exhaustive and do not limit the utility model to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best understand the utility model for and utilize the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims (5)

1. The utility model provides a screen convenient to adjust tight dynamics that rises, includes mounting bracket (2) that has two vertical poles and a horizontal pole, the tip level of mounting bracket (2) is rotated and is connected with winding up roller (1), it has curtain (14) to coil on winding up roller (1), one end rigid coupling that curtain (14) were not coiled on winding up roller (1) is on a erection column (3), its characterized in that, each rigid coupling in erection column (3) both ends has sliding sleeve (4), two sliding sleeve (4) suit respectively on two vertical poles of mounting bracket (2) and can freely slide from top to bottom, tip level rigid coupling has a horizontal pole (5) under mounting bracket (2), be equipped with stopper (12) that extend down on erection column (3), the cover is equipped with slip ring (11) on horizontal pole (5), slip ring (11) can freely slide on horizontal pole (5), and be equipped with a gyro wheel support (13) on it, the utility model discloses a buffer of gyro wheel, including gyro wheel support (13), be equipped with draw-in groove (16) of through-hole form on gyro wheel support (13), the diapire becomes the inclined plane in draw-in groove (16), gyro wheel (17) outer peripheral edges and draw-in groove (16) inner bottom wall rolling contact, be equipped with an elastic drive spare on horizontal pole (5), elastic drive spare drive slip ring (11) remove, and can be right slip ring (11) are towards keeping away from the removal of stopper (12) direction and are cushioned.

2. The screen convenient to adjust tension strength according to claim 1, wherein the elastic driving member comprises an electromagnet (6) sleeved on the cross bar (5), the sliding ring (11) is made of a magnetic material, the cross bar (5) is sleeved with a buffer spring (18), and two ends of the buffer spring (18) in the elastic direction elastically abut against the sliding ring (11) and the electromagnet (6) respectively.

3. The screen convenient to adjust the tension force according to claim 1, wherein the bottoms of the two longitudinal rods are connected with a base (7) through a buffer.

4. The screen convenient to adjust the tension force according to claim 3, wherein the buffer member comprises two protrusions (8) disposed on the base (7), the two protrusions (8) are respectively rotatably connected with two longitudinal rods, the longitudinal rods are sleeved with a limiting ring (10), and are further sleeved with a return spring (9), and two ends of the return spring (9) in the elastic force direction elastically abut against the limiting ring (10) and the protrusions (8) respectively.

5. The screen convenient to adjust tension according to claim 4, wherein the lower end of the vertical rod is coaxially and fixedly connected with a ball head (15), and the protruding portion (8) is provided with a spherical clamping groove for clamping the ball head (15) and capable of freely rotating.

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