AN ANGLE COUPLING STRUCTURE FOR KNOCKDOWN CABINETS

Abstract: An angle coupling structure for knockdown cabinets includes an angle coupling (100), a plurality of connectible sections (2), and a plurality of securing aid (3). Within each of the connectible section, an elongate chamber (21) is formed to receive a connecting rod projecting (11) from the angle coupling (100) and an elongate recess (22) is formed generally below the elongate chamber to receive one of the securing aids (3) and permitting the same to slidably move therein. An elongate slot (23) is formed on the wall between the chamber and the recess. While a screw (12) is put through the hole preformed on the securing aid, it may pass the elongate slot to screw into the hole formed on the connecting rod precisely due to the adjustable position of the securing aid. The connectible sections, angle coupling, and the securing aids are thus joined together tightly.

Description: The present invention relates to an angle coupling structure for a knockdown cabinet. From GB-A 1 168 887 an angle coupling structure for knockdown cabinets is known. This angle coupling structure is provided with plural projecting connecting rods, each of said connecting rods being provided with plural screw holes and additionally, this angle coupling structure comprises a plurality of connectible sections, each of which is formed with an axially extending chamber with a cross-section the same as that of said connecting rods for the insertion of said connecting rods thereinto and a plurality of securing aids each of which have a plurality of round holes being formed to correspond to said screw holes formed on said connecting rod. Therethrough screws may pass to join and secure said securing aid, said connecting rod and said connectible section. The securing aids of this device are not slidingly movable. Additionally, it is known that a knockdown cabinet is assembled with a plurality of connectible sections while the assembly of such connectible sections is, as shown in Figs. 3 and 4, relied on an angle coupling 100 having a plurality of connecting rods 101, each of which may extend into a connecting rod retainer 201 preformed in a connectible section 200. A plurality of round holes 202 are present on an inner wall of the connecting rod retainer 201 in such a manner that such holes will correspond to threaded screw holes (not shown) preformed on the connecting rods 101 so that screws 300 may be screwed into therethrough to join and fasten the connectible sections and the angle coupling (as shown in Fig. 4). However, it is frequently found that the holes 202 do not always match with the present threaded holes on connecting rods 101 when the connecting rods 101 are inserted into the connecting rod retainers 201. Whenever this situation happens, the user will need to adjust by himself the location of the angle coupling 100 to match the two sets of holes and fasten them with screws, or, he will have to send back the product to the seller re-drilling new and matchable hole(s). The former solution will result in gap between each angle coupling 100 and connectible section 200 while the second solution will cause much inconvenience to the user. SUMMARY OF THE INVENTION Object of the present invention is an angle coupling structure for knockdown cabinets comprising: an angle coupling provided with plural projecting connecting rods each of said connecting rods being provided with a plurality of screw holes a plurality of connectible sections each of which is formed with an axially extending chamber with a cross-section the same as that of said connecting rods for the insertion of said connecting rod thereinto; a plurality of securing aids each of which having a plurality of round holes being formed to correspond to said screw holes formed on said connecting rod therethrough screws may pass to join and secure said securing aid, said connecting rod and said connectible section characterized in that below said chamber an axially extending recess is formed with an axially extending elongate slot formed on the wall between said chamber and said recess and said securing aids having a cross section the same as that of said axially extending recess to be insertable into said recess and slidingly movable therein, said screws passing the securing aid and the connecting rod via said elongate slot and the screw holes, thereby tightly and securely joining the connectible sections with the angle coupling. The axially extending longitudinal slot is formed on the wall between the connecting rod retainer and the securing aid retainer so that screws may be put through round holes formed on the securing aid and through the longitudinal slot to precisely screw into the hole formed on the connecting rod projecting from the angle coupling by sliding the securing aid in the securing aid retainer to a proper position. BRIEF DESCRIPTION OF THE DRAWINGS A specific embodiment of the present invention will now be described with reference to the accompanying drawings of which: Fig. 1 is a three-dimensional analytical perspective of the present invention; Fig. 2 is a plan view showing the joining of the connectible section with the connecting rod with a plurality of screws through the securing aid as well as the longitudinal slot; Fig. 3 is a three-dimensional analytical perspective of a conventional angle coupling structure for a knockdown cabinet; and Fig. 4 is a plan view showing the joining of a connecting rod with a connectible section in a conventional coupling structure. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT As shown in Fig. 1, an angle coupling structure for knockdown cabinets has an angle 1, a plurality of connectible sections 2, and a plurality of securing aids 3. A plurality of connecting rods 11 having plural preformed screw holes 111 are projecting from the angle coupling 1; each of the connectible sections 2 is provided with a connecting rod retainer to receiving a connecting rod 11, and a securing aid retainer 22 formed generally below the connecting rod retainer 21 to receiving a securing aid 3. An axially extending longitudinal slot 23 is formed on the wall between the connecting rod retainer 21 and the securing aid retainer 22. A plurality of round holes 31 provided on the securing aid 3 substantially correspond to the screw holes 111 formed on the connecting rod, respectively. With this arrangement, the securing aid 3 may be inserted into the securing aid retainer 22 to freely slidable move therein to be adjusted until the holes 31 on it may precisely match with those holes 111 on the connecting rod 11 thereby enables a screw 32 to pass through the hole 31, the longitudinal slot 23, and the screw hole 111 so as to screw the connectible section 2, securing aid 3, and the angle coupling 1 together tightly without leaving any gap between the angle coupling and the connectible section 2. The specifications for the screw 32, round hole 31, longitudinal slot 23, and screw hole 111 are all the same to enable their joining. However, the size of the longitudinal slot 23 may be slightly larger while the screw 32 may be used together with washers. Since most of these are known by those who are familiar with this art, they will not be further described here. In addition, the cross-section of the connecting rod 11 is corresponding to that of the connecting rod retainer 21 while the cross-section of the securing aid 3 is corresponding to that of the securing aid retainer 22. Such cross-sections may be properly changed while the same effect of joining may still be achieved. While a specific embodiment of the present invention has been shown and described in detail to illustrate the application of the principle of the invention, it will be understood that the invention may embodied otherwise without departing from such principles.

Claims: An angle coupling structure for knockdown cabinets comprising: an angle coupling provided with plural projecting connecting rods (11) each of said connecting rods (11) being provided with a plurality of screw holes (111); a plurality of connectible sections (2) each of which is formed with an axially extending chamber (21) with a cross-section the same as that of said connecting rods (11) for the insertion of said connecting rod (11) thereinto; a plurality of securing aids (3) each of which having a plurality of round holes (31) being formed to correspond to said screw holes (111) formed on said connecting rod (11); therethrough screws may pass to join and secure said securing aid (3), said connecting rod (11) and said connectible section (2) characterized in that below said chamber (21) an axially extending recess (22) is formed with an axially extending elongate slot (23) formed on the wall between said chamber (21) and said recess (23) and said securing aids (3) having a cross section the same as that of said axially extending recess (22) to be insertable into said recess (22) and slidingly movable therein, said screws (32) passing the securing aid (3) and the connecting rod (11) via said elongate slot (23) and the screw holes (111), thereby tightly and securely joining the connectible sections (2) with the angle coupling.

Inventors: LIUO, CHIH CHING
Applicants: LIUO, CHIH CHING
Application year: 1989
Main classification: F16B12
IPC codes: F16B7, F16B12