JPH01111102U - - Google Patents

Description

[Brief explanation of the drawing]

1 to 4 show a first embodiment of the resin impeller according to this invention, and FIGS. 1a and 1b are a longitudinal sectional view and a partial horizontal sectional view taken along the line -, respectively, of the resin impeller, and FIG. a and b are respectively a front view and a plan view of the impeller core, FIG. 3 is an enlarged vertical cross-sectional view of the protrusion provided on the impeller core, FIG. 4 is a vertical cross-sectional view of the injection mold, and FIG. 5 a , b are respectively a front view and a plan view of the impeller core in the second embodiment of this invention, FIGS. 6a and b are respectively a front view and a plan view of the impeller core in the third embodiment of this invention, and FIG. 12 to 12 show a fourth embodiment of the resin impeller according to this invention, and FIGS. 7a and 7b are longitudinal sectional views and partial horizontal sectional views taken along the - line of the resin impeller, and FIGS. 8a, b is a front view and a plan view of the impeller core, FIG. 9 is an enlarged vertical cross-sectional view of a protrusion provided on the impeller core, FIG. 10 is an explanatory slope view showing the procedure for filament winding, and FIG. 11 a, b are a longitudinal cross-sectional view of the compression mold and a partial horizontal cross-sectional view taken along the line -, FIG. 12 is a vertical cross-sectional view of the injection mold, and FIGS. 13 to 15.
The figures show a fifth embodiment of the resin impeller according to this invention, and FIGS. 13a and 13b are longitudinal sectional views and partial horizontal sectional views taken along the line -, respectively, of the resin impeller, and FIG. 14 is a front view of the impeller core. Fig. 15 is a vertical sectional view of an injection mold, Figs. 16 to 20 show a sixth embodiment of the resin impeller according to this invention, and Fig. 16 is a right half longitudinal sectional front view of the resin impeller. , FIG. 17 is a perspective view of the impeller core preform laminate, FIG. 18 is a perspective view of the impeller core preform, and FIG. 19 shows how the impeller blade preform is laminated on the impeller core preform. 20 is a vertical cross-sectional view of a compression molding mold, FIG. 21 is a slope view of a conventional injection-molded one-piece resin impeller, and FIGS. 22a and 22b show the impeller core and impeller blades. FIG. 2 is a vertical cross-sectional view and a partial horizontal cross-sectional view taken along the line - respectively of a conventional resin impeller coupled together. 1, 11, 31, 41...Resin impeller, 2
, 12, 32, 42...impeller core, 2b, 1
2b... Protrusion portion, 3, 13, 33, 43... Impeller blade portion, 3a, 13a, 33a, 43a... Blade piece.

Claims (1)

[Scope of utility model registration request] A conical outer surface of the impeller core is formed by combining an impeller core formed into a generally conical shape and a resin impeller blade provided outside the impeller core and provided with a plurality of blades. and the conical inner surface of the impeller blade portion are integrally connected by engagement in at least a circumferential direction.