CN201853055U

CN201853055U - Connecting device for projection screen bracket

Info

Publication number: CN201853055U
Application number: CN 201020245158
Authority: CN
Inventors: 莫世华; 容志军; 张科伦
Original assignee: Shenzhen Shijixing Audio & Video Equipment Co Ltd
Current assignee: Shenzhen Shijixing Audio & Video Equipment Co Ltd
Priority date: 2010-06-30
Filing date: 2010-06-30
Publication date: 2011-06-01
Anticipated expiration: 2020-06-30

Abstract

The utility model relates to a connecting device for a projection screen bracket, comprising two main body parts which are mutually hinged with each other, wherein the two main body parts are respectively provided with a hook assembly; the outside ends of the two hook assemblies can be hung with each other in matched manner; at least one hook assembly is connected with a hinge of the corresponding main body part; the hook assembly also comprises an elastic element; and the elastic element is connected between the inside end of the hook assembly and the main body part corresponding to the hook assembly. By utilizing the device, the screen bracket is more convenient to fold, faster to install and firmer to connect, and cannot shake to affect use. In addition, as the structure is simple, and the fewer components are used, the connecting device is convenient to produce and manufacture and is favorable to popularization and application.

Description

Projection screen props up holder connection device

Technical field

The utility model relates to a kind of mechanical connection accessory to elongate articles, is specifically related to a kind of projection screen and props up holder connection device.

Background technology

Projection screen has nearly centenary history today from firstly appearing.The teaching of application scenario from the cinema that begins most to today, commercial affairs, a plurality of industries such as Industry Control and amusement.As a branch of screen product, it is in earlier 1950s that folding screen appears at market at first.Because the support of screen is collapsible and be convenient to the dismounting transportation, folding screen is from occurring having obtained very great development so far.Manufacturer is developed into the Shi Duojia of today by two or three initial family.The quality critical of folding screen is the serviceability of Folding screen screen bracket, and its quality, reliability and cost of products depend on the concrete structure of a holder connection device to a great extent.

Publication number is CN 2916699Y, in open day on June 27th, 2007, discloses a kind of collapsible projection screen, the folding movable button parts of its folding rack are by locating piece A, locating piece B, locating button, movable button, rivet and spring are formed, and locating piece A and locating piece B are set in the two ends on support are hollow, and support connects by hinge, fixedly install locating button at support one end, fixedly install movable button at the support other end, spring is installed on the movable button, and movable button cooperates with locating button.It has realized the pressing lock buckle structure, makes the folding more convenient of screen mount, and locating button can be equal with rack surface with being provided with of movable button, keeps rack surface smooth.But its shortcoming is that parts are many, installs complicated; The mutual alignment concerns the accuracy requirement height and owing to adopted asymmetric mounting points design with respect to support between the parts, can only be implemented in support designated mounting point-to-point fixing in the face of the assigned address of locating piece, installs and makes mistakes easily; And only depend on locating button to realize being connected with the interlock of movable button on it, just cause when installing, its guiding also only relies on occlusal surface, in the use, when being parallel to occlusal xsect and torsion occurs, entire bracket is not enough along the rigidity of this face direction, has the factors of instability.

So, seek a kind of more perfect projection screen and prop up holder connection device, become the focus that industry is paid close attention to.

Summary of the invention

At the deficiencies in the prior art, the purpose of this utility model is intended to provide a kind of projection screen to prop up holder connection device, and it is simple in structure, easy for installation.

For achieving the above object, the utility model adopts following technical scheme:

A kind of projection screen props up holder connection device, and it comprises two mutually hinged main components, is separately installed with a hanging hook assembly on described two main components, and the outboard end of described two hanging hook assemblies can be mated and mounted; At least one described hanging hook assembly main component hinge corresponding with it connects, and the hanging hook assembly that this hinge is connected in main component also includes the flexible member that is connected between its medial end and the corresponding with it main component.

Described two main components are square tube, and its two end connects by a rotating shaft hinge, and described two hanging hook assemblies lay respectively in the tube chamber of its two hinged end.

Described flexible member is the spring that is installed between described hanging hook assembly and the corresponding with it main component tube wall, and the flexible direction of described spring is radially consistent with described main component.

Described hanging hook assembly also comprises can be along described main component radially movable and stretch out button outside the main component tube wall, and the activity direction of described button is consistent with the flexible direction of spring.

The main component hinge that described two hanging hook assemblies are all corresponding with it connects.

The projection screen that the utility model is set forth props up holder connection device, and its beneficial effect is:

Make the folding more convenient of screen mount, and have installation rate faster, connect comparatively firmly, the influence that can not shake is used.In addition, it is simple in structure, and parts are less relatively, is convenient to manufacture, and helps promoting the use of.

Description of drawings

Fig. 1 is the structural representation that a kind of projection screen of the utility model props up holder connection device, describes its connection status;

Fig. 2 props up the open mode synoptic diagram of holder connection device for projection screen shown in Figure 1;

Fig. 3 props up the structural representation of holder connection device for the another kind of projection screen of the utility model.

Embodiment

Below, in conjunction with the accompanying drawings and embodiment, projection screen of the present utility model is propped up holder connection device be described further, so that clearerly understand the utility model technological thought required for protection.

As shown in Figure 1, for a kind of projection screen of the present utility model props up holder connection device, it comprises side cross tube 1,2, its the two butt joint, and by a rotating shaft 10 intert its two to the end, rank, its the two hinge is connected, at the official jargon of square tube 1 a end near square tube 2, one hook 3 is installed, the outboard end of this hook 3 (just stretching to an end of square tube 2) is hook-type, and it is fixed on rivet 4 cross-under on square tube 1 tube wall by two ends, thereby makes hook 3 to be connected in the square tube 1 by hinge, can rotate along the axial cross section of square tube 1, the corresponding hook 5 that is equipped with in square tube 2 inside, the front-end and back-end of hook 5 are respectively by two rivets 6,7 cross-under will be linked up with 5 thus and be fixed in the square tube 2 at the inwall of square tube 2, the outboard end of hook 5 (end of close square tube 1 just) is hook-type, its shape and the form fit of linking up with 3, the two can mount, when rotating square tubes 1 with rotating shaft 10,2, the two docks vertically to make it, and hook 3 can mount with hook 5.

In order to realize linking up with 3,5 mutual locking, between the tube wall of the medial extremity of above-mentioned hook 3 and square tube 1, also be connected with a spring 11, the flexible direction of spring 11 is radially consistent with described square tube 1, and be positioned at hook 3 rotational plane, after hook 3 and hook 5 mounted, spring 11 has the expulsive force that hook 3 rearward end are made progress, and was then corresponding, hook 3 front end has the pressure that compresses hook 5 downwards, make its two can not break away from.

For further convenient use, the tube wall of above-mentioned square tube 1 is provided with a button 8, button 8 can be along the radially activity of square tube 1, and it is consistent with the flexible direction of spring 11, itself and spring 11 lay respectively at the both sides of hook 3 medial extremitys, the medial extremity that can control hook 3 rotates, and in addition, between button 8 medial extremitys and square tube 1 inwall a rubber washer is installed also.

As shown in Figure 2, need when folding, pressing button 8 downwards then, it is downward, corresponding then to link up with 3 rearward end, and its leading section upwards rotates, and hook 3 breaks away from hook 5, rotates square tubes 1,2 with rotating shaft 10, makes the two fold.

Certainly, the utility model can also be as shown in Figure 3, and the hook in its side cross tube all is rotatably connected, and is provided with spring and button accordingly.

In addition, above-mentioned spring can adopt other flexible members in the utility model, as shell fragment etc.Obviously, those skilled in the art can carry out various changes and modification to the utility model and not break away from spirit and scope of the present utility model.Like this, if of the present utility model these are revised and modification belongs within the scope of the utility model claim and equivalent technologies thereof, then the utility model also is intended to comprise these changes and modification interior.

Claims

1. a projection screen props up holder connection device, and it comprises two mutually hinged main components, it is characterized in that, is separately installed with a hanging hook assembly on described two main components, and the outboard end of described two hanging hook assemblies can be mated and mounted; At least one described hanging hook assembly main component hinge corresponding with it connects, and the hanging hook assembly that this hinge is connected in main component also includes the flexible member that is connected between its medial end and the corresponding with it main component.

2. projection screen as claimed in claim 1 props up holder connection device, it is characterized in that, described two main components are square tube, and its two end connects by a rotating shaft hinge, and described two hanging hook assemblies lay respectively in the tube chamber of its two hinged end.

3. projection screen as claimed in claim 2 props up holder connection device, it is characterized in that, described flexible member is the spring that is installed between described hanging hook assembly and the corresponding with it main component tube wall, and the flexible direction of described spring is radially consistent with described main component.

4. projection screen as claimed in claim 3 props up holder connection device, it is characterized in that, described hanging hook assembly also comprises can be along described main component radially movable and stretch out button outside the main component tube wall, and the activity direction of described button is consistent with the flexible direction of spring.

5. projection screen as claimed in claim 1 props up holder connection device, it is characterized in that, the main component hinge that described two hanging hook assemblies are all corresponding with it connects.