Patent ID: 8043029

Claim:
A packer structure for grouting which is used to inject a repair liquid into a crack of a concrete structure, the packer structure comprising: a packer body comprising: a flange adhered onto the crack by a sealer, wherein a groove portion accommodating the sealer is formed on a lower surface of the flange; and a central tube that is a hollow tube extending upwards from a central portion of the flange, wherein a first coupling portion is formed at an upper portion of the central tube, has an external circumference that decreases upwards, and comprises a first inclined surface; an elastic tube having a first end connected to the first coupling portion, wherein the elastic tube inflates and deflates elastically, a repair liquid is contained in the elastic tube while the elastic tube inflates, and the repair liquid is injected into the crack by a deflation force; a repair liquid injecting tube comprising: a second coupling portion connected to a second end of the elastic tube, having an external circumference that decreases downwards, and comprising a second inclined surface; and a check valve coupled to the repair liquid injecting tube and preventing the repair liquid from flowing backward; a first coupling cap having an inner circumference surface of a lower portion screwed to the central tube, wherein a first pressurizing surface is formed on an inner circumference surface of an upper portion of the first coupling cap so as to pressurize the elastic tube towards the first inclined surface; and a second coupling cap having an inner circumference surface of an upper portion screwed to the repair liquid injecting tube, wherein a second pressurizing surface is formed on an inner circumference surface of a lower portion of the second coupling cap so as to pressurize the elastic tube towards the second inclined surface, wherein the check valve comprises: a stumbling projection having a circular shape and formed on an inner circumference surface of the injecting hole; and an elastic plate that is separately inserted into an insertion hole connected to the injecting hole, is formed below an outer circumference surface of the stumbling projection, and is elastically changed so as to close and open the injecting hole.