JPH0418152Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention is placed in the cassette insertion slot of audio equipment, such as a tape recorder, and prevents dirt and dust from entering the car from entering through the cassette insertion slot. This relates to a dustproof door that protects the drive mechanism and allows smooth insertion and removal of tape.

[Prior Art] In a tape player in which the tape running position is located below the insertion slot, the conventional dustproof door D has a front plate F and a guide for guiding light from a light source to the front plate F, as shown in FIG. It is composed of a light body L and a reflection plate R. The front plate F, which is always biased in the closing direction by a spring, is formed with a curled portion C in which the lower portion of the front plate F is curved. They are in contact as shown in Figure 6.

[Problems with the Prior Art] Conventionally, the curled portion C and the half H are always in contact even in the next state when the tape is taken out.

When the tape rises above the running position and the contact position between the curled part C and the half H rises accordingly.

Next, the tape is suddenly pushed out of the insertion slot by a spring inside the device and is moving in parallel.

In this case, the curled portion may get caught in the irregularities such as the label pasting surface formed on the surface of the half and the enlarged part h for loading the head, pinch roller, etc. into the half, causing malfunction. Ta.

[Means for solving the problem] Therefore, the present invention consists of a front panel with a window in the center of the front, a light guide made of transparent synthetic resin such as acrylic resin, and aluminum. The substantially arc-shaped protrusions protruding from the front surface of the left and right two places of the light guide, which is made by sequentially arranging reflective plates made of metal plates such as It is something that stands out.

[Function] A roughly arc-shaped protrusion protrudes from the front of the dust-proof door, so that when the tape is set in the running system, the angle of the door is large when transitioning from the play state where failures are likely to occur to the time of ejection. Therefore, the curl part and half side are in contact. Next, as the tape approaches a horizontal state, the angle of the door becomes smaller, the protrusion comes into contact with the half surface, and the curl part separates from the half surface. The protruding portion is located on the uneven surface of the half, and the arm portion of the protrusion is longer than the protrusion of the enlarged portion, so that the door is supported without touching the enlarged portion.

Furthermore, the present invention can be assembled by simply inserting and fixing the protrusion of the light guide into the window of the front panel.

Furthermore, since the approximately arc-shaped protrusions protruding from the light guide protrude forward from both ends of the window portion of the front panel, the light from the light source is guided by these protrusions to the front and sides of the front panel. irradiate the direction.

[Embodiment] Fig. 1 is an exploded perspective view showing an embodiment of the dustproof door of the present invention, in which the dustproof door 1 engages with escutcheons at both ends of the upper part of the front plate 2, and rotates when the door opens and closes. A shaft rod that functions as a moving shaft is provided together with a return spring, etc. A rectangular window portion 3 is bored in the center, and a curl portion 4 is formed by bending the lower plate material.
A light guide 5 made of a transparent acrylic resin or the like is disposed behind the front plate 2.
A substantially arc-shaped projection 6 having an arm portion projecting from the inside of the window portion 3 to the front of the front plate 2 is integrally provided on the light guide body 5 . This protrusion 6 may be attached to the light guide 5 by a separate U-shaped member as shown in the figure, or the light guide 5a may be attached to the light guide 5 as shown in FIG.
The protrusion 6a may be integrally formed when molding the light guide 5b, or the light guide 5b may be provided with a separate piece 6b having a generally arcuate shape as shown in FIG.
Reflection plates 7 made of plate-shaped metal such as aluminum are sequentially disposed behind the light guide 5 and are integrated with the front plate 2 and the light guide 5. FIG. 3 is a longitudinal cross-sectional view of the central part of the dustproof door 1, and FIGS. 4a and 4b are front and side views showing the state in which the cassette tape is placed horizontally. As shown in the figure, in the horizontal state, the protrusion 6 is in contact with the surface of the half H, and the other door portion 1 and the half H are not in contact. Incidentally, when the tape moves upward from the playing state to the time of ejection, the angle of the door contacting the half surface becomes smaller, the protrusion comes to contact the half surface, and the curled portion is separated from the half surface.

[Effects] The present invention requires only a slight modification of the shape of the conventional light guide, and the conventional shape can be utilized by simply adding a protrusion of a separate member to eliminate the problem between the door and the tape that occurs when inserting and removing the cassette tape. Prevent getting caught,
This prevents malfunctions that previously led to equipment damage due to malfunctions, and enables smooth loading and unloading of cassette tapes, providing excellent operability.

Furthermore, the present invention allows positioning by simply inserting the protrusion of the light guide into the window formed in the front panel.
Even though it is made up of a combination of multiple plates, it is extremely easy to assemble.

In addition, since the protrusions on both sides emit light to the front and sides of the front panel, it is easy to see the letters and decorations on the front panel, and the protrusions on both sides themselves shine, so this invention relies on the illumination effect. It also has decorative properties.

Furthermore, even though the conventional curled portion is provided, the present invention has a large protrusion so that the curled portion does not touch the cassette, and there is no problem in inserting and removing the cassette tape. It has an excellent price/performance ratio, as there is no need to manufacture a new front panel. In addition, the conventional curl portion may be provided, and there is no need to newly manufacture a front plate of a different shape, resulting in an excellent price/performance ratio.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view showing one embodiment of the dustproof door used in the present invention, Figs. 2 a to b are perspective views showing other embodiments, and Fig. 3 is a central vertical section of the door of the present invention. Figures 4a and 4b are a front view and side view showing the operating state, Figure 5 is a perspective view showing the conventional example, and Figure 6 is a perspective view showing the conventional example.
The figure is a side view showing the operating state of the same as above. 1...Dust-proof door, 2...Front plate, 3...Window section,
4... Curled part, 5, 5a, 5b... Light guide,
6, 6a, 6b...Protrusion, 7...Reflector, C...
Cassette tape, H...half, h...huge part.

Claims (1)

[Scope of claim for utility model registration] It is rotatably attached to the cassette insertion slot of audio equipment such as a tape recorder, and consists of a metal front plate with a window in the center and a translucent synthetic resin guide. In a dust-proof door in which a light body and a reflector are sequentially arranged and integrated, substantially arc-shaped protrusions protruding from the front of the light guide at two places on the left and right sides are arranged on both the left and right sides of the window portion of the front plate. A dustproof door for audio equipment, etc., characterized by protruding forward from the front.