Dispensing unit for a thin film dispenser and thin film dispenser having the same

[0038]With reference to FIGS. 6 to 9A, in the second embodiment in accordance with the present invention, the housing 10A can be composed of three casings combined with one another and has an unlocking device with the guiding blocks 16A mounted on one of the casings. The casing with the guiding blocks 16A could be opened. The dispensing unit 20A permanently extends out of the housing 10A in a normal condition, and a cap 14 is provided to cover the protruding portion of the dispensing unit 20A out of the housing 10A to keep the dispensing unit 20A from contacting another object while not in use. In this embodiment, the guiding blocks 16A of the unlocking device will directly abut against the pushed protrusions 298A on the resilient engaging arms 29A when the open casing of the housing 10A is closed. Accordingly, the engaging elements 296A on the resilient engaging arms 29A will disengage from the concave-convex teeth 242A on the tape supplying wheel 24A, and the wheel assembly 23A can b

[0040]With reference to FIGS. 10 and 11, in the third embodiment in accordance with the present invention, the thin film dispenser comprises a housing 10B and a dispensing unit 20B having structures similar to or same with those in the aforementioned embodiments. Only the substantial differences between the structures of this embodiment and the aforementioned embodiments are described as follows.

[0041]The dispensing head 22B is mounted on the housing 10B and is provided for connecting with the dispensing unit 20B. When the dispensing unit 20B is mounted in the housing 10B, an end of the base 21B of the dispensing unit 20B is combined with the dispensing head 22B. The thin film 26B that is mounted around the wheel assembly 23B is mounted around the dispensing head 22B after the dispensing unit 20B is assembled in the housing 10B. The dispensing head 22B will tighten the thin film 26B to enable the thin film 26B to be used in a normal condition.

[0042]The locking device 28B is resiliently