C RING

Abstract: The present invention relates to a C ring for securing members such as wire members. The C ring (10) is provided with a cover (14) on at least the inside of a wire rod (12) bent into the shape of a letter C. This is achieved by covering the wire rod (12) with a tubular cover (14) or by coating a cover on the inner part of the curve of the wire rod (12), or otherwise. In this way it is possible to provide a C ring (10) having a high strength, but which does not generate friction noises when wires are clamped together using the C ring (10), and movement occurs.

Description: The present invention relates to a C ring for securing members such as wire members. A conventional C ring is made of wire rod and bent in figure C. This C ring is to be employed in the case where two spring wires provided within a bed, a cushion of automobile chair, etc. are secured together or in the case where a spring wire is secured with a peripheral wire or otherwise. In the case where two wires are secured together with the C ring, the C ring is to be clamped at the both sides with a tool after properly positioning them in the C ring. However, in the case where wires are secured together with the C ring, spring back of the wire rod is caused to arise though the C ring is clamped strongly at the both sides with the tool and therefore, securing strength of the C ring is weak. Since the C ring and the wires are brought into direct contact, friction noise is caused to arise when the wires are actuated by force to deform them. An object of the present invention is to provide a C ring having strong securing strength. Further object of the present invention is to provide a C ring which may not generate friction noise. The C ring of the present invention is characterized in that a wire rod is bent in figure C, a cover is installed at least on the inside of the wire rod. In the case where members are secured together with the C ring, the wire rod can possibly be deformed as much as the deformed portion of the cover when the C ring is clamped at the both sides with the tool, and therefore, even when spring back of the wire rod is caused to arise, the cover is pushed upon'the members by the force of the wire rod, thus giving strong securing strength to the C ring. The-C ring and the members are never brought into direct contact together due to the presence of the cover, and therefore, no friction noise may be caused to generate in contact with the members. In the drawings: Fig. 1 is a view shown therein of a C ring concerned with the present invention; Fig. 2 is a view shown in enlarged cross section taken along the line Il-Il of Fig. 1; Fig. 3 is a view shown therein of another C ring concerned with the present invention; Fig, 4 is a view shown in enlarged cross section taken along the line IV-IV of Fig. 3; Fig. 5 is a view shown in plan of an assembly of the C ring shown in Fig. 1; Fig. 6 is a view shown in front section of a part of an assembly of the C ring shown in Fig. 1; and Fig. 7 is a view shown in plan of an assembly of the C ring shown in Fig. 3. There is disclosed in Fig. 1 and Fig. 2 about a C ring concerned with the present invention. This C ring 10 comprises a round wire rod 12 which is made of steel and bent in figure C and a tubular cover 14 which is made of'vinyl chloride resin, and the round wire rod 12 is covered with the tubular cover 14. In order to fabricate the C ring 10, after covering long scale round wire rod with long scale tubular cover and further cutting the covered round wire rod, the cut round wire rod is to be bent in figure C. In the case where two wires are secured together with the C ring 10, upon properly positioning the wires in the C ring 10 and clamping the both sides 16 thereof with the tool, the cover 14 comes to be sandwitched between the wires and the round wire rod 12 to subject the cover 14 to deformation. Thus, deformation of the round wire rod 12 occurred due to the handling of the tool may be increased as much as the deformation of the cover 14 and therefore, even if the round wire rod 12 gives rise to spring back, the cover 14 may forcibly be pushed upon the wires by the-force of the round wire rod 12 to strengthen the securing strength. In the case where the wires are secured together with the C ring 10, the wires and the round wire rod 12 are not brought into direct contact with each other and therefore, even if the wires are actuated by force to deform the wires, friction noise is not subject to generation. Further, the round wire rod 12 is covered with the cover 14 and therefore, the round wire rod 12 can be prevented from corrosion. Referring now to the drawings and more particularly to Fig 3 and Fig. 4, there is disclosed another C ring of the invention. In this embodiment, the C ring 20 comprises a round wire rod 22 which is made of steel and bent in figure C and a cover 24 which is made of vinyl chloride resin, and the cover 24 is coated on the inside of the round wire rod 22. Therefore, the C ring 20 may come to reinforce its securing strength and to give rise to no friction noise as well as the C ring 10 shown in Fig. lea'nod Fig. 2. Further in the abovementioned embodiment, there is disclosed the case where each round wire rod 12 and 22 is employed as a wire rod but a square wire rod, etc. may be employed as the wire rod. Still further in the abovementioned embodiment, there is disclosed the case where steel is employed as material of each round wire rod 12 and 22, but alminium, copper, etc. may be used therefor. Still more further, there is disclosed the case where vinyl chloride resin is employed as material of the cover 14 and 24, but other plastic, rubber, paper, felt, leather, etc. may be used. As disclosed in Fig. 5, a plurality of the C rings 10 is aligned and an adhesive tape 30 is bonded to the back of the C rings 10 to form an assembly. Thus, a plurality of the C rings 10 can possibly be charged into the tool at a stretch to improve workability. As disclosed also in Fig. 6, after aligning a plurality of the C rings 10, the outside at the back of the C rings 10 may be bonded together using adhesive 40, etc. to form an assembly. Otherwise, after assembling, as disclosed in Fig. 7, a plurality of the round wire rods 22 to form an assembly using the adhesive tape 30, if the cover 24 is coated on the inside of the round wire rods 22, the C rings 20 can readily be fabricated.

Claims: CLAIMS 1. A C ring comprising a wire rod bent in figure C and a cover installed at least inside of said wire rod. 2. The C ring according to claim 1 wherein said cover is a tubular form and said wire rod is covered with said cover. 3. The C ring according to claim 1 wherein said cover is coated on an inner part of the curve of said wire rod. 4, The C ring according to claim 1 wherein said cover is made of plastic. 5. The C ring according to claim 4 wherein said plastic is vinyl chloride resin. 6. The-C ring according to-claim 1 wherein'said wire-rod is a round wire rod. 7. The C ring according to claim 1 wherein materialof said wire rod is steel.

Inventors: MURAI, TOKUZO
Applicants: MEIHO, INC.
Application year: 1986
Main classification: F16B2
IPC codes: F16F1, F16B4, A47C7, A47C23, F16B45, F16B2