Dfa Analysis - Vhs Cassette Assembly

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in a locked position.

Part #: 04 Qty: 1 no.

Description: Tape Guide Roller

Material: Plastic

Function:

The function of this part is to guide the magnetic tape from the first spool onto the tape guide pin. It also helps in keeping the magnetic tape flat avoiding possible crumbling and entanglement.

Part #: 05 and 06 Qty: 2 nos.

Description: Tape Guide Pins (Hollow)

Material: Stainless Steel

Function:

The tape guide pins determine the actual path of the magnetic tape. Since the magnetic tape is in constant contact, the surface finish of the tape guide pins are maintained very smooth so as to keep the friction co-efficient as least as possible.

Part #: 07 Qty: 1 no.

Description: Tape Guide Plastic Film

Material: Plastic

Function:

In the event of slack in the tape, the tape guide plastic film ensures that the winding tension on the spool remains constant. The matt finish of this part aids in good gripping during the slack in the tape. The position of this part ensures that it never comes in contact on the data side of the magnetic tape

Part #: 08 Qty: 1 no.

Description: Tape Guide Pin

Material: Stainless Steel

Function:

The function of this part is to guide the magnetic tape onto the tape guide pin and the second spool. The tape guide pin does not rotate so as to create sufficient tension on the tape as well as to aid the necessary gripping on to the tape guide plastic film.

Part #: 09 Qty: 1 no.

Description: Spool Rotation Interlock Release

Material: Plastic

Function:

The spool rotation interlock performs the mechanical function of releasing the spool releases when the VHS cassette in inserted into the VCR machine.

Part #: 10 and 11 Qty: 1 each

Description: Spool Releases

Material: Plastic

Function:

When actuated by the spool rotation interlock, the spool releases open up and give way for the spools to rotate. In the normal condition the spool releases keep the spools in locked condition.

Part #: 12 Qty: 2 nos.

Description: Spool Release Spring

Material: Spring Steel

Function:

The function of the spool release spring is to reset the spool releases once the VHS tape is taken out of the VCR machine.

Part #: 13 Qty: 2 nos.

Description: Tape Spools

Material: Plastic

Function:

The tape spools perform the function of storing the magnetic tape duly wound. The top of the spool is made transparent to aid visibility to the user. The spools arrangement is such a way that it self-aligns to adjust the variations in the center-to-center distance of the spool drive shafts of the VCR machine.

Part #: 14 and 15 Qty: 2 nos.

Description: Tape Indicator Windows

Material: Plastic

Function:

The tape indicator window lets the user view the quantity of the tape on each of the spools. The part is made transparent so that the user can determine if the tape needs to be rewound just by a glance through this window.

Part #: 16 Qty: 1 no.

Description: Spool Bias Spring

Material: Spring Steel

Function:

The function of the spool bias spring is to offer the necessary tension that is needed to keep the spools firmly against the cassette base. Hence, consistent height of the magnetic tape is maintained with respect to playback head in the VCR machine.

Part #: 17 Qty: 1 no.

Description: Cassette Top

Material: Plastic

Function:

Cassette top forms the casing for the assembly. The tape protector, spool bias spring and the tape indicator windows are mounted on to this part.

Part #: 18 Qty: 1 no.

Description: Tape Protector Spring

Material: Spring Steel

Function:

The function of the tape protector spring is to retain the tape protector in the closed position.

Part #: 19 Qty: 1 no.

Description: Tape Protector

Material: Plastic

Function:

Tape protector is incorporated in order to guard the magnetic tape from any physical contact of foreign objects while handling of the VHS cassette since the tape is most flimsy in nature.