CN2608298Y - Writing board edge frame section bar - Google Patents

Abstract

The writing board frame profile surrounds the whole writing board. The frame profile includes four circular arc turnings of 90 degrees, four sides, a connector, and a hollow frame that is connected end to end at the connector. The cross section of the frame profile is shaped like a groove opening inward, which is composed of the inward upper folding flange, the standing edge and the inward lower folding flange. The profiles at the ends of the connecter are intersected and connected to each other or fixed to the drawing board. The utility model has a circular arc turning and a connector, well integrated and light weighted, which is convenient for installation and safe for using. The utility model, with an exquisite shape, is firm connected, which is applicable to the wrapping of both the mid-size writing boards and the big-size writing boards.

Description

Clipboard frame section bar

Technical field

The utility model relates to a kind of clipboard frame section bar.

Background technology

Clipboard comprises common clipboard and magnetic writing board, there is the less student of size to use clipboard, larger-size large-scale clipboard is also arranged, large-scale clipboard can be for using in meeting, teaching and the working environment, these clipboards generally need bound edge, make clipboard that be arranged long service life, the use timber, the plastics that around the existing clipboard there are bound edge, the clipboard that their only suitable sizes are less and the decorative effect of plastics are relatively poor, the frame that uses aluminum alloy material is also arranged in the prior art, the aluminium alloy light weight, good decorating effect, long service life.But the structure of existing aluminum alloy frame is generally respectively fallen miter angle by straight flange, the two ends of four splits, adjacent two straight flanges are spent wedge angles with 45 degree slopes to being connected into 90, be the frame type with mechanical connections such as screws again, the existence of this wedge angle, the one, in use hurt sb.'s feelings easily, dangerous, the 2nd, the shape dullness is not attractive in appearance, in addition, four straight flanges are assembled into also more time-consuming, the effort of rectangle frame.Therefore prior art has the perfect necessity of improvement, increases clipboard frame new varieties.

Summary of the invention

The purpose of this utility model provides a kind of clipboard frame section bar, and it has arc corners and an interface, and good integrity is easy for installation, safe in utilization, body is light, is connected firmly, good looking appearance both can be used for small-sized clipboard bound edge, more be applicable to large-scale clipboard bound edge.

The purpose of this utility model is achieved in that

A kind of clipboard frame section bar, be surrounded on around the clipboard, this frame section bar for four 90 degree arc corners, four sides, interface are arranged, at the end to end hollow frame of interface, its cross section is the grooved to inner opening, be made of inside upper hem, stile, inside lower hem disjunctor, the open slot of this interface two ends section bar inserts affixed or affixed with clipboard mutually.

Described interface two ends section bar and clipboard affixed for riveted joint, screw are connected, a kind of in tying of spiral shell.

Four sides of described frame section bar are straight flange and/or bent limit, and the radius of curvature of described four arc corners equates.

The upper and lower flanging of the cross section groove of described frame section bar is isometric, this upper and lower flanging be 90 degree straight flanges parallel to each other, arc limit or its in conjunction with in a kind of.

The upper and lower flanging of the cross section groove of described frame section bar is not isometric, and upper hem is shorter than lower hem, this upper and lower flanging be 90 degree straight flanges parallel to each other, arc limit or its in conjunction with in a kind of.

The relative lower hem of the upper hem of described frame section bar has an inside downward oblique angle.

The outer surface of described flanging, stile is a kind of in smooth surface and band muscle, the rooved face.

The material of described frame section bar is an aluminium alloy.

The utility model has following actively useful effect:

The frame section bar of this product has four 90 degree arc corners, can as wedge angle, may not hurt sb.'s feelings in the use, safe in utilization, it is an end to end hollow frame type frame, and its cross section is the grooved to inner opening, thereby install easily, its material is an aluminium alloy, and body is light, the intensity height, long service life, aesthetic in appearance.Open by elasticity during installation, embed clipboard, interface section bar two ends insert affixed mutually or with clipboard with rivet, screw is connected, bonding mode is affixed, is connected firmly, and is easy for installation, save time; This product both had been applicable to that children, student with common clipboard, magnetic writing board, also were applicable to large-scale clipboard, magnetic writing board etc., can be widely used in places such as meeting, teaching and office.

Description of drawings

Fig. 1 is the structural representation of the utility model one embodiment;

Fig. 2 is that the A of Fig. 1 is to partial view;

Fig. 3 is the B-B viewgraph of cross-section of Fig. 1;

Fig. 4 is another embodiment with Fig. 3;

Fig. 5 is another embodiment with Fig. 3;

Fig. 6 is another embodiment with Fig. 3;

Fig. 7 is another embodiment with Fig. 3;

Fig. 8 is another embodiment with Fig. 3;

The specific embodiment

Accompanying drawing number

1. frame section bar 2. sides

3. side 4. arc corners

5. cross-sectional openings groove

501. upper hem 502. stiles 503. lower hems

6. interface 7. rivet holes

Please refer to Fig. 1, Fig. 2, the utility model is a kind of clipboard frame section bar, be surrounded on around the clipboard, this frame section bar 1 for four 90 degree arc corners 4, four 2,3, interfaces 6 of straight flange are arranged, at the end to end hollow frame of interface, its cross section is the grooved 5 to inner opening, is made of inside upper hem 501, stile 502, inside lower hem 503 disjunctors; It is affixed mutually that interface 6 two ends section bars insert (an end opening groove 5 is local to be enlarged, and plugs in open slot 5 local contraction in addition) respectively, or be connected with rivet, screw with clipboard or bond.

Four sides of described frame section bar are straight flange and/or bent limit, and the radius of curvature of described four arc corners 4 equates.

Fig. 3, Fig. 4, embodiment illustrated in fig. 5 in, the upper and lower flanging 501,503 of the cross-sectional openings groove 5 of described frame section bar is isometric, this upper and lower flanging be 90 degree straight flanges parallel to each other, arc limit or its in conjunction with in a kind of.

Fig. 6, Fig. 7, embodiment illustrated in fig. 8 in, the upper and lower flanging 501,503 of the cross-sectional openings groove 5 of described frame section bar is not isometric, upper hem is shorter than lower hem, this upper and lower flanging be 90 degree straight flanges parallel to each other, arc limit or its in conjunction with in a kind of.

In the embodiment shown in fig. 8, the upper hem 501 relative lower hems of described frame section bar have an inside downward oblique angle.

The outer surface of described flanging, stile is a kind of in smooth surface and band muscle, the groove (see figure 5) surface.

During enforcement, the material of described frame section bar is an aluminium alloy.

Claims (8)

1. clipboard frame section bar, be surrounded on around the clipboard, it is characterized in that: this frame section bar for four 90 degree arc corners, four sides, interface are arranged, at the end to end hollow frame of interface, its cross section is the grooved to inner opening, be made of inside upper hem, stile, inside lower hem disjunctor, the open slot of this interface two ends section bar inserts affixed or affixed with clipboard mutually.

2. clipboard frame section bar as claimed in claim 1 is characterized in that: described interface two ends section bar and clipboard affixed for riveted joint, screw are connected, a kind of in tying of spiral shell.

3. clipboard frame section bar as claimed in claim 1 is characterized in that: four sides of described frame section bar are straight flange and/or bent limit, and the radius of curvature of described four arc corners equates.

4. clipboard frame section bar as claimed in claim 1 is characterized in that: the upper and lower flanging of the cross section groove of described frame section bar is isometric, this upper and lower flanging be 90 degree straight flanges parallel to each other, arc limit or its in conjunction with in a kind of.

5. clipboard frame section bar as claimed in claim 1, it is characterized in that: the upper and lower flanging of the cross section groove of described frame section bar is not isometric, upper hem is shorter than lower hem, this upper and lower flanging be 90 degree straight flanges parallel to each other, arc limit or its in conjunction with in a kind of.

6. clipboard frame section bar as claimed in claim 4 is characterized in that: the relative lower hem of the upper hem of described frame section bar has an inside downward oblique angle.

7. clipboard frame section bar as claimed in claim 1 is characterized in that: the outer surface of described flanging, stile is a kind of in smooth surface and band muscle, the rooved face.

8. clipboard frame section bar as claimed in claim 1 is characterized in that: the material of described frame section bar is an aluminium alloy.

Images