JPH0132109Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to an improvement of a push knob device for operating a push-type operating piece such as a lock release lever of a cassette deck or the like.

In the double cassette deck 1 shown in Fig. 1, in which two cassette mechanisms are housed in the same case, the cassette holder lid 11a of the first cassette mechanism and the cassette holder lid 11b of the second cassette mechanism are opened as necessary. Therefore, independent release knobs 12a and 12b are provided, respectively.

As shown in FIGS. 2-a and 2-b, the opening knobs 12a and 12b consist of knob portions 121a and 121b that protrude from the front plate 14 and leg portions 122a and 122b that are integrally molded therewith. 122a and 122b pass through the molded synthetic resin front angle 15 and abut against holder lock release levers 16a and 16b of a cassette mechanism (not shown) disposed behind it.

Note that 123a and 123b are projections for preventing the knob from coming off.

In such a structure, the knob portions 121a, 1
By pressing 21b, the lock release lever 1 is released.
6a and 16b are moved rearward to release the lock and open the holder lids 11a and 11b.

Incidentally, the two opening knobs 12a and 12b may not be arranged on the same plane from the viewpoint of design or product appearance.

In the example shown in FIG. 1, the surface of the front plate 13 on which the opening knob 12b is arranged projects more forward than the surface of the front plate 14 on which the opening knob 12a is arranged.

On the other hand, since the first and second cassette mechanisms are often the same, the amount of movement (stroke) required for the lock release levers 16a and 16b to perform their functions is the same, so both knob portions 121a and 121b The protruding dimensions from the front plate 14 or the front decorative plate 13 must be the same, and the dimensions from the front plate 14 to the lock release lever are also the same, so it is inevitable that the knob of the release knob 12b The total length from the front end of the section 121a to the rear end of the leg section 122b must be longer than that of the opening knob 12a.

Therefore, even if the shapes of the knob parts 121a and 121b are the same, there are two types of opening knobs 12a and 12b with different lengths of the leg parts 122a and 122b.
must be prepared.

For this reason, two types of molds are required, which increases parts costs. Two types of knobs with extremely similar shapes must be managed, making parts management complicated. It is easy to mix up the above parts during assembly. It has drawbacks such as complicated process control.

Therefore, in this invention, by devising the shape of the contact part of the push-knob device with the push-type actuating piece, the push-knob device with a single shape can be installed in the different positions mentioned above. As an example, a case where the present invention is applied to the holder lid opening knob of the double cassette deck illustrated in FIG. 1 will be described in detail.

In FIG. 3, reference numeral 31 denotes an opening knob, and a pair of flat protrusions 3 are arranged on the knob portion 311, the leg portion 312, and the leg portion 312 at a distance of 180 degrees from each other.
13 and 314 are integrally molded.

The axial lengths and axes of the two flat plate-like protrusions 313 and 314 are substantially the same, but the formation positions are different along the axial direction of the leg portion 312.

That is, a flat plate-like protrusion 313 is formed at the end of the leg 312 .

Therefore, the dimension from the front end of the knob portion 311 to the rear end of the flat plate-shaped protrusion 313 and the flat plate-shaped protrusion 3
The dimensions ′ to the rear end of 14 are different (>′).

FIG. 4 is a diagram showing the engagement between the opening knob 31 and the front angle 41, and the front angle 41 has a hole 411 through which the leg portion 312 of the opening knob 31 is inserted, and a hole 411 that is connected to the flat plate shape. Slit 4 through which the protrusions 313 and 314 are inserted
12,413 are respectively provided, and
Insertion hole 411 on the back side of front angle 41
Small protrusion 414 nearby (3 o'clock direction in the illustrated one)
is formed.

Furthermore, the area around the hole 41 of the front angle 41 protrudes 415 forward.

Therefore, the knob legs 312 and the flat plate-like protrusions 313 and 314 are formed into holes 411 and slits 412 and 4.
13 and rotated by 90 degrees, the flat protrusion 313,
314 is locked to the front angle 41 to prevent it from coming off.

Next, we will discuss the application of the opening knob 31 of this invention to multiple locations with different arrangement planes. FIG. 5-a shows the case where the opening knob 31 is arranged on the front plate 14 as shown in FIG. 12a. hand,
In this case, the rear end of the flat protrusion 314 is brought into contact with the lock release lever 16a.

Also, in Figure 5-b, the release knob 31 is shown in Figure 1 12b.
In this case, the rear end of the flat plate-like protrusion 313 is brought into contact with the lock release lever 16b.

In addition, in FIG. 5-b, as shown in FIG. 4, the protrusion 41 has a height corresponding to the axial displacement dimension between the flat protrusions 313 and 314.
It is necessary to form 5.

As a result, the actual size of the opening knob in FIG. 5-b can be obtained compared to the actual size of the opening knob in FIG. 5-a.

Thereby, even if there is a step difference (-') between the front plate 14 and the front decorative plate 13, the same opening size can be obtained with the opening knobs having the same shape.

Furthermore, in FIG. 5-a, a protrusion 414 is formed on the back surface of the front angle 41 in the 9 o'clock direction around the hole.
Also, the protrusion 414 formed in the 3 o'clock direction in FIG. 5-b can prevent mistakes in the installation work of the opening knob 31.

That is, after being inserted as described above, it is rotated 90 degrees clockwise to lock it, but for example, contrary to the illustration in FIG. When it is moved, the lower edge of the flat protrusion 314 is locked by the protrusion 414 and rotation is inhibited, which indicates that the insertion direction is incorrect.

On the other hand, the protrusion 414 in Fig. 5-a exhibits a similar effect, and in Fig. 5-a, the flat plate-like protrusion 314 is in a position where it comes into contact with the lock release lever 16a, and in Fig. 5-b, the plate-like protrusion 313 is in the position where it comes into contact with the lock release lever 16a. Lock release lever 16
Since a predetermined rotation is possible only by inserting it so that it is set in a position where it contacts b, even an inexperienced operator can immediately determine the error.

Figures 6-a to 6-c show other embodiments, and Figure 6-a shows the flat plate-like protrusion 31 shown in Figure 3.
3,314, flat plate-shaped protrusion 313a, 3 corresponding to
Bent parts 315a and 31 are provided at both ends of 14a, respectively.
6a is formed.

According to this structure, the flat protrusions 313a, 31
It is possible to increase the mechanical strength of the lock release lever 4a and press the lock release lever more reliably.

Figure 6-b shows the flat protrusion 31 shown in Figure 3.
3,314, flat plate-shaped protrusion 313b, 3 corresponding to
The rear end edge of the lock release lever 14b is formed into a stepped shape, and a plurality of engaging edges 315b to 32 that are to come into contact with the lock release lever are provided.
0b, the same opening knob can be used at multiple locations that can be applied to dimensional differences corresponding to the stepped portions.

In this embodiment, it is necessary to correct the positional relationship between the lock release lever and the opening knob depending on the engagement edge with which the lock release lever comes into contact.

Figure 6-c shows flat plate-like protrusions 313c and 314c.
A plurality of slits 315c are formed in each of the slits 315c through which the lock release levers are inserted, and the same opening knob can be used at a plurality of locations that can be applied to the dimensional difference corresponding to each slit.

In addition, in the embodiment shown in FIG. 6-c, the lock release lever is inserted through the slit 315c, so that the engagement between the two also provides a function to prevent the release knob from coming off.

Note that the protrusion 415 in FIG. 5-b is the fifth
This is necessary when the state in which one end of the flat protruding part 314 is in contact with the front angle flat part and the other end is in contact with the lock release lever as shown in Figure -a is required. If one end is in contact with the flat portion of the front angle 41 and the other end is in contact with the lock release lever, it is clear that a recessed portion should be formed near the penetration portion of the front angle 41 of the other knob. .

In addition to the lock release lever, there is also a push switch actuation piece to be operated by the push knob 31.

As explained above, this invention is a push knob device for operating a push-type operating piece, in which a pair of flat protrusions are formed at the rear end portion of the knob leg 312, and the flat protrusions It is characterized in that the positions along the axial direction of the leg portions 312 of the edges that are formed to engage with the push-type actuating piece are different, and the edge that should be engaged with the push-type actuating piece can be selected. This makes it possible to change the substantial length from the abutting position of the push-type actuating piece and the edge to the front surface of the knob portion of the knob 31, so that even if there is a step between the surfaces on which the knobs are arranged, Since the same knob protrusion dimensions and the same pressing stroke can be obtained with a single knob, there is no need to prepare two or more types of knobs with similar shapes as in the past, and manufacturing can be reduced by reducing the number of molds. Cost reduction and parts management can be simplified.

Furthermore, if a small protrusion is formed on the back surface of the front angle through which the knob passes, it has extremely excellent practical effects such as preventing incorrect insertion of the knob.

[Brief explanation of the drawing]

Figure 1 is a perspective view of the double cassette deck, Figure 2
Figures -a and 2-b are respectively sectional views of conventional knob devices, Figure 3 is a perspective view of the knob device of an embodiment of this invention, and Figure 4 is an installed state of the knob device of an embodiment of this invention. FIGS. 5-a and 5-b are sectional views of the knob device according to the embodiment of this invention, and FIGS. 6-a to 6
Figures 1-c are perspective views of other embodiments of this invention. 311 is a knob part, 312 is a leg part, 313,3
14 is a flat plate-like protrusion.

Claims (1)

[Scope of utility model registration request] A push-knob device for operating a push-type differential piece, which includes a knob portion 311, a leg portion 312 connected to the knob portion 311, and a pair of flat plate-shaped plates formed at the rear end portion of the leg portion 312. Each of the flat protrusions 31 is provided with protrusions 313 and 314 and is to be engaged with the push-type operation piece.
The positions of the edges of the legs 3 and 314 along the axial direction of the legs 312 are different from each other, and the edges of the legs 3
13, 314 are inserted through the slits 412, 413
A push knob device characterized in that a protrusion for regulating the direction of rotation of the knob 31 is formed on the rear surface of a front angle 41 having a front angle 41 formed therein.