JPH02101384U - - Google Patents

Description

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view of the case of a magnetic tape cassette to which the present invention is applied; FIG. 2 is a front perspective view showing a conventional cylindrical tape guide and its support structure;
Figure 3 is a rear perspective view of the same, Figure 4 is a plan view of the same, Figure 5 is a perspective view of the same.
The figures are a sectional view taken along line AA in FIG. 4, FIG. 6 is a plan view showing a tape guide and its support structure according to an embodiment of the present invention, FIG. 7 is a sectional view taken along line BB in FIG. 6, and FIG. 9 is a front perspective view showing the tape guide support structure according to the same embodiment, FIG. 9 is a rear perspective view showing the tape guide support structure according to the same embodiment, and FIG. 10 is a front view showing the cylindrical tape guide and the support structure of the present invention. Perspective view,
Fig. 11 is a rear perspective view of the same, Fig. 12 is a plan view of the same,
Fig. 13 is a sectional view taken along the line CC in Fig. 12, Fig. 14 is a front perspective view showing the semi-cylindrical tape guide and the support structure of the present invention, Fig. 15 is a rear perspective view of the same, and Fig. 16 is the same plane. This figure and FIG. 17 are cross-sectional views taken along the line CC in FIG. 12.

Amendment January 6, 1986 The scope of claims for utility model registration is amended as follows.

[Claims for Utility Model Registration] (1) A tape cassette comprising a semi-cylindrical fixing tape guide disposed in a tape running path inside a cassette case consisting of upper and lower halves, wherein the tape guide is fixed to the inner surface of at least one of the halves. A magnetic device characterized in that a tape guide support pin is planted, and a polygonal outer wall that contacts the fixed tape guide is formed on the fixed tape guide support surfaces (clamping surfaces) of the upper and lower halves corresponding to the circumference of the pin. tape cassette. ( 2) In a tape cassette equipped with a fixed tape guide disposed in a tape running path inside a cassette case consisting of upper and lower halves, the fixed tape guide support pin is planted on the inner surface of at least one of the halves, and A cylindrical type device characterized by having a step on the fixed tape guide support surfaces (clamping surfaces) of the upper and lower halves corresponding to the circumference of the support pin, and a polygonal outer wall that abuts the fixed tape guide on the lower side. A tape cassette with either a semi-cylindrical tape guide. (3) If the fixed tape guide is cylindrical, the tape guide is fitted to the support pin, and
2. The magnetic tape cassette according to item 2, which is fixed by being sandwiched between opposing higher support surfaces on the inner surfaces of the upper and lower halves. (4) If the fixed tape guide is semi-cylindrical, the lower support surfaces facing each other on the inner surfaces of the upper and lower halves,
3. The magnetic tape cassette according to claim 1 or 2, wherein the tape guide is fixed by press-fitting an end portion of the tape guide between the support pin and the polygonal outer wall. (5) The magnetic tape cassette according to item 1 or 2, wherein the semi-cylindrical fixed tape guide is arranged along the running path of the magnetic tape. (6) The magnetic tape cassette according to item 1 or 2, wherein the support pin has recesses (notches/grooves) formed at positions corresponding to both circumferential ends of the semi-cylindrical fixed tape guide. (7) The magnetic tape cassette according to item 1 or 2, wherein an outer wall that abuts both circumferential ends of a semi-cylindrical fixed tape guide is formed at the base of the support pin. (8) The polygonal outer wall and the outer wall that abuts both circumferential ends of the semi-cylindrical fixing tape guide are both or either one of which is provided with a guiding chamfer. magnetic tape cassette.

Claims (1)

[Claims for Utility Model Registration] (1) In a tape cassette comprising a fixed tape guide disposed in a tape running path inside a cassette case consisting of an upper and a lower half, the support surface on the inner surface of at least one of the halves has the A pin having a diameter slightly smaller than the inner diameter of the fixed tape guide is planted, and a semicircular groove having a support rib inscribed in the fixed tape guide base and a polygonal outer wall is formed around the base of the pin, A magnetic tape cassette, characterized in that the magnetic tape cassette is fixed by press-fitting an end of a semi-cylindrical fixed tape guide into the semi-circular groove. (2) The magnetic tape cassette according to item 1 above, wherein the semi-cylindrical fixed tape guide is arranged on the side on which the magnetic tape runs. (3) The magnetic tape cassette of claim 1, wherein the pin has a pair of vertical grooves for burr escape, and the two vertical edges of the semi-cylindrical fixed tape guide are aligned with these vertical grooves. (4) The magnetic tape cassette according to item 1 above, wherein a guide chamfer is formed on the base or outer wall corresponding to the entrance end of the semicircular groove. (5) In a tape cassette equipped with a fixed tape guide arranged in a tape running path inside a cassette case consisting of upper and lower halves, the inner diameter of the inner diameter of at least one half is slightly larger than the inner diameter of the fixed tape guide. A pin of small diameter is planted, and a groove having a support rib inscribed in the fixed tape guide base and a polygonal outer wall is formed around the base of the pin, and when the fixed tape guide is cylindrical, After fitting the tape guide into the pin, it is pressed and fixed by opposing support surfaces on the inner surfaces of the upper and lower halves, and in the case of a semi-cylindrical shape, the end of the tape guide is press-fitted into the groove. Features a tape cassette. (6) The magnetic tape cassette according to item 5 above, wherein the length of the semi-cylindrical fixed tape guide is longer than that of the cylindrical fixed tape guide.