JPS6041033Y2 - Mounting mechanism for cassette opening opening/closing door in automotive audio equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an in-vehicle audio device, and particularly to a mounting mechanism for an opening/closing door installed in a cassette insertion slot of a nosepiece.

Generally, a nosepiece of an in-vehicle audio device is mounted on a dash board in a vehicle interior, and a cassette insertion slot is formed in this nosepiece.

This cassette insertion slot is covered from the inside of the nosepiece by an opening/closing door, and the cassette tape is inserted by pushing the opening/closing door open.

Conventionally, the shaft that supports this opening/closing door is fixed by melting resin, which is the material of the nose piece, using heat.

Therefore, the installation work of this opening/closing door is extremely complicated, and when the shaft is heat welded, parts other than the welded area may also be heated and deformed.

Furthermore, if the door is thermally welded, there is also the disadvantage that it becomes impossible to disassemble the opening/closing door portion for maintenance.

This invention eliminates the drawbacks of the conventional cassette insertion opening/closing door mounting mechanism, and the purpose of the installation of the shaft that supports the opening/closing door is to simplify the work in a short time. be.

The present invention is characterized in that a fixing member can be fitted into the guide provided in the nosepiece, and the support shaft of the opening/closing door is pressed down by the fixing member.

Embodiments of the present invention will be described below with reference to the drawings.

Figure 1 is an exploded perspective view showing how each part is attached to the nosepiece, Figure 2 is a perspective view of the cassette insertion slot from the back, Figure 3 is a vertical sectional view of the cassette insertion slot, and Figure 5 is a perspective view showing how each part is attached to the nosepiece. FIG. 3 is a longitudinal cross-sectional view showing the mounting portion of the operation button.

Reference numeral 1 in the figure is a nosepiece.

This nose piece 1 is molded from a resin material, and is attached so as to protrude from a dash board in a vehicle interior, so as to cover the front surface of an in-vehicle audio device installed inside the dash board.

The front surface of the nosepiece 1 has a cassette insertion port 1a, mounting holes 1b for various operation buttons, and an IC.

Furthermore, a display window 1d for displaying a radio tuning scale and the like is opened below the cassette insertion slot 1a, and a transparent cover 2 is fixed to this display window 1d.

Further, a mounting hole 1e is opened above the mounting hole 1b of the operation button, and a display plate 3 indicating the type of the operation button is mounted in this mounting hole 1e.

The cassette insertion opening 1a is covered from the inside of the nosepiece 1 by an opening/closing door 4. The structure of the attachment mechanism of this opening/closing door 4 and its assembly procedure will be explained below.

Wall plates 1f are formed at both longitudinal ends of the cassette insertion slot 1a to guide both end surfaces of the cassette tape T.
In FIGS. 1, 2, and 3, only one wall plate 1f is shown), and a shaft receiver 1g is formed in a concave shape on both wall plates 1f.

This shaft receiver 1g is formed by providing a groove on the inner surface of a wall plate 1f (see FIG. 2).

On the other hand, the opening/closing door 4 is molded from a thin iron plate or synthetic resin, and shaft insertion portions 4a each having a hollow circular cross section are bent at both sides of the upper end.

A support shaft 5 is inserted into this shaft insertion portion 4a.

The diameter of the support shaft 5 is set to be slightly smaller than the vertical width dimension of the shaft receiver 1g, so that both ends of the support shaft 5 can be fitted into the shaft receiver 1g.

Further, the end surface of the support shaft 5 is in contact with the bottom surface of the groove of the shaft receiver 1g, so that the support shaft 5 is prevented from coming out laterally.

A spring 6 is attached to the center of the support shaft 5.

When the opening/closing door 4 is assembled to the nose piece 1, one arm 6a of this spring 6 comes into contact with the lower surface of the upper plate part IA of the nose piece 1, and the other arm 6b comes into contact with the back surface of the opening/closing door 4. The opening/closing door 4 is urged in the closing direction (the state shown by the solid line in FIG. 3) by the elastic force of the spring 6.

Further, a pair of guides 1h each having a cross-sectional shape are formed facing each other on the lower surface of the upper plate portion 1A of the nosepiece 1, and two sets of these guides 1h are provided.

Furthermore, a stopper 11 is formed at an intermediate position between the opposing guides 1h.

This guide 1h is formed to extend in a direction perpendicular to the support shaft 5, and a fixing member 7 for holding the support shaft 5 can be fitted into this guide 1h.

This fixing member 7 is molded from resin, and its shape is defined by a central holding part 7a and four elastic arms 7b formed on both sides of this holding part 7a.

When attaching the fixing member 7, the four elastic arms 7b are forcibly fitted into the guide 1h, and the elastic deformation of the elastic arms 7b allows the fixing member 7 to be held within the guide 1h. (See Figure 4).

To assemble the above-mentioned parts, first, the support shaft 5 is inserted into the shaft insertion portion 4a of the opening/closing door.

At this time, a spring 6 is attached between the shaft insertion portions 4a on both sides, and this spring 6 is attached to the center of the support shaft 5.

Next, both ends of the support shaft 5, that is, the portions projecting laterally from the shaft insertion portion 4a, are fitted into the shaft receiver 1g.

At this time, one arm 6g of the spring 6 is brought into contact with the lower surface of the upper plate part IA of the nosepiece 1, and the other arm 6g
b is brought into contact with the back surface of the opening/closing door 4.

After that, the elastic arms 7b of the two fixing members 7 are forcibly fitted onto the guide 1h, and the fixing members 7 are fitted onto the guide 1h.
Place it in between.

The fixing member 7 is inserted until the center presser portion 7a hits the stopper 11.

Then, the support shaft 5 is held down by the end surface B of the holding part 7a, so that the support shaft 5 is not pulled out from the shaft receiver 1g (see FIG. 3).

The opening/closing door 4 installed in this way has a spring 6
It is urged to cover the cassette insertion port 1a from the inside by the elastic force of.

Then, when inserting the cassette tape T into the cassette insertion slot 1a, the opening/closing door 4 is pushed by the end surface of the cassette tape T, rotates inward of the nose piece 1 about the support shaft 5 as a fulcrum, and opens. (Dot-dashed line state in Figure 3).

Further, when the opening/closing door 4 is pushed open to the maximum extent, the front lower edge B of the holding portion 7a of the fixing member 7 acts as a stopper, thereby preventing the opening/closing door 4 from opening more than necessary.

Furthermore, when it becomes necessary to remove the opening/closing door 4 during maintenance work, etc., the fixing member 7 can be pulled out from the guide 1h, and then the support shaft 5 can be taken out from inside the shaft receiver 1g.

Note that, if necessary, the fixing member 7 is coated with adhesive and adhered to the lower surface of the upper plate part IA of the nose piece 1, and the opening/closing door 4 is
It is also possible to have it permanently attached.

Next, the configuration of the mechanism for attaching the operation button to the attachment hole 1b and its assembly procedure will be explained.

As shown in FIG. 5, the bottom plate portion of the nose piece 1 is provided with:
A stopper 1j is formed inside the mounting hole 1b.

In addition, a cylindrical protrusion 1k is formed in the step part at the inner position, and a guide groove 1k is further formed in the lower part of the step part.
1 is formed.

The operation button 8 installed in the mounting hole 1b has a hole 8a formed on the back surface, and a tip part 9a of a lever 9 made of a sheet metal can be clamped into the hole 8a.

At the rear of the lever 9, an actuating surface 9b is bent at a substantially right angle, and a guide piece 9c is provided at the lower end of the actuating surface 9b.
is bent and formed.

Further, a spring 10 can be attached around the projecting body 1.

In the procedure for assembling each of the parts described above, first, the spring 10 is mounted around the projecting body 1.

Next, the guide piece 9c of the lever 9 is inserted into the guide ill of the nose piece 1 from the inside (right side in FIG. 5), so that the tip part 9a of the lever 9 faces into the mounting hole 1b.

On the other hand, there is an operation button 8 on the mounting 61b from the outside of the nose piece 1.
is inserted, and the tip part 9a is clamped into the hole 8a of the operation button 8, thereby integrating the operation button 8 and the lever 9.

At this point, due to the elastic force of the spring 10, the lever 9
is urged inward of the nose piece 1, and the operation button 8 is retracted to a position where the rear end touches the stopper 1j.

When the nosepiece 1 is attached to the front of the vehicle-mounted audio system, the operating surface 9b of the lever 9 comes into contact with the actuator S1 of the switch S installed in the vehicle-mounted audio system.

A spring having a stronger elastic force than the spring 10 is installed inside the switch S, and the actuator S1 is biased in the projecting direction by this internal spring.

Therefore, the lever 9 that comes into contact with the actuator S1 moves to the left in FIG. 5, and the operation button 8 comes into a state of protruding from the front surface of the nosepiece 1 (the state shown in FIG. 5).

After assembly, when the operation button 8 is pressed, the switch S is activated via the lever 9.

Next, the configuration of the mechanism for attaching the operation button to the attachment hole 1c and the assembly procedure will be explained.

Two bosses 1m are integrally formed on the back side of the mounting hole 1c of the nosepiece 1 (FIG. 1).

Further, flanges lla are formed on both sides of the operation button 11 to be inserted into the mounting hole 1c, and furthermore, the operation button 11 is provided with flanges lla.
A bushing 12 is fixed to the back side of the button.

A cover plate 13 is attached to the back side of the operation buttons 11, and this cover plate 13 has a square window 13a through which the bushes 12 of each operation button 11 project, and two holes 13b in the center. It is perforated.

In the above-described assembly procedure for each component, first each operation button 11 is inserted into the mounting hole 1c from the inside.

At this time, the flange lla hits the inner edge of the mounting hole 1c and acts as a stopper.

After that, the cover plate 13 is attached from the back side of the operation button 11.

At this time, the bushes 12 fixed to the back surface of the operation button 11 are made to protrude rearward from each corner window 13a, and the bosses 1m formed on the north piece 1 are fitted into the holes 13b.

Thereafter, the boss 1m is melted by heat, and the cover plate 13 is fixed.

When the nose piece 1 is attached to the front of the vehicle-mounted audio system, the bush 12 is linked to a switch mechanism installed in the audio system, and the operating button 11 is moved to the nose piece by the elastic force of the spring provided in this switch mechanism. 1
protrude to the front.

When the operation button 11 is pressed, the back surface of the operation button 11 moves to a position where it touches the cover plate 13, thereby operating the switch mechanism.

As described above, according to the present invention, a concave shaft receiver is formed inside the nosepiece, the support shaft of the opening/closing door is fitted into the shaft receiver, and the fixing member is further fitted into the guide formed inside the nosepiece. Since the support shaft is held down by the fixing member, the installation work of the opening/closing door is extremely simple, and work efficiency is improved.

In addition, product precision can be improved because there is no welding failure or deformation of the nosepiece due to heat, which has been a problem when the support shaft is thermally welded as in the conventional method.

In particular, since the fixing member is fitted by contracting the elastic arm and being pressed into the groove of the guide, the fixing member can be snapped onto the guide.

Further, since the fixing member has elastic arms on both sides, by contracting the elastic arms, the fixing member can be attached with equal fitting force on both sides.

Therefore, there is no possibility that the fixing member is attached diagonally.

As described above, it becomes extremely easy to attach the fixing member, and since the fixing member can be removed at any time, the opening/closing door attachment part can be easily disassembled during maintenance work.

Furthermore, both ends of the support shaft are fitted into the shaft receivers, and the end faces of the fixing member hold down the inner part of the support shaft than both ends, so the fixing member holds the part between the support points at both ends of the support shaft. can be pressed against the nosepiece.

Therefore, the fixing member can prevent the support shaft from bending.

Therefore, the opening/closing operation of the opening/closing door can be performed smoothly.

In addition, bending of the opening/closing door itself can be prevented, and there is no gap between the cassette insertion port of the nose piece and the opening/closing door, and the appearance can always be maintained in a good condition.

Furthermore, the support shaft itself can be made thinner, making it more compact and saving material costs.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is an exploded perspective view showing how each part is attached to the nosepiece, and FIG.
The figure is a perspective view showing the opening/closing door from the back side, FIG. 3 is a longitudinal cross-sectional view showing the mounting part of the opening/closing door, FIG. 4 is a view taken in the direction of the ■ arrow in FIG. FIG. 3 is a longitudinal cross-sectional view showing the mounting portion of the operation button. 1...Nose piece, 1a...Cassette insertion slot, 1g...Gloss holder, 1h...
...Guide, 4...Opening/closing door, 5...
Shaft, 6...Spring, 7...
Fixing member, 7a... Pressing part, 7b...
Elastic arm, B... end face of the fixing member.

Claims (1)

[Scope of utility model registration request] A cassette insertion port is formed in the nosepiece that covers the front surface of the in-vehicle audio device, and concave shaft receivers located at both ends of the cassette insertion port are formed inside the nosepiece, so that the cassette insertion port can be inserted into the nosepiece. Both ends of a support shaft that supports an opening/closing door that is covered from the inside of the nosepiece are fitted into the shaft receiver, and a guide is provided inside the nosepiece having parallel grooves extending in a direction perpendicular to the support shaft and facing each other. In an in-vehicle audio device, elastic arms provided on both sides of a fixing member are fitted into the grooves of the guide, and the end faces of the fixing member press down on the inner side of both ends of the support shaft. Mounting mechanism for the cassette insertion opening/closing door.