JPS6226863Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a locking mechanism for a lid provided in a main body cabinet or the like so that it can be opened and closed, such as the cassette lid of a cassette tape recorder.

An example of a lid that requires a locking mechanism is
For example, the cassette lid that covers the tape cassette storage section of a so-called cassette tape recorder is generally rotatably attached to the main body cabinet of the tape recorder, and a spring member applies a biasing force in the direction of opening the lid to the lock release operating member. The lid is configured to be automatically opened when the lid is unlocked by such an operation. In this case, a structure is used in which a locking portion formed on the lid body is locked to a locking portion of a locking plate provided on the main body side of the cassette tape recorder or the like.
In such a structure, it is necessary to attach a spring member to the lock plate in order to temporarily release the lock plate when closing the lid. In addition, in order to release the lock by operating from the outside of the main body, a connection structure between the unlocking operating member and the lock plate is required, and if the unlocking operating member is to be automatically returned after operation, it is necessary to A spring member is also required. Therefore, the structure of the lock mechanism becomes complicated, the number of parts increases, and the assembly work becomes troublesome.

In view of these circumstances, the present invention has an extremely simple structure with a small number of parts by using the spring member itself as a locking member and also as a means for returning the lock release operation member. The purpose of the present invention is to provide a locking mechanism for a lid body that is easy to assemble.

That is, the feature of the lid locking mechanism according to the present invention is that the lid such as a cassette lid can be attached to the main body cabinet of a cassette tape recorder or the like so as to be openable and closable, and the central part of the elastic linear body is
This U-shaped part is held by a holding part formed on the operating member, and taper parts inclined in the same direction are formed at both ends of the linear body, and these tapered parts are attached to the main body. The locking portion of the lid body is engaged with a locking portion that faces abutting portions formed on the cabinet and is continuous with these tapered portions, and the operating member is held in place when the tapered portion comes into contact with the abutting portion. deviating the tapered portion in a direction substantially perpendicular to the moving direction by moving the tapered portion in a tangent direction;
The purpose is to release the engagement between the lock part continuous with the tapered part and the locking part of the lid.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

1 and 2 are perspective views of the entire cassette tape recorder to which the lid locking mechanism of the present invention is applied, showing the cassette lid in the closed and open states, respectively.

In FIGS. 1 and 2, the main body 2 of the cassette tape recorder 1 has an approximately rectangular parallelepiped shape as a whole, and one of the two surfaces with the largest surface area out of all six surfaces constituting this rectangular parallelepiped shape is shown in FIGS. A cassette lid 3 that substantially covers a cassette storage section C formed on the front surface is rotatably attached to the tape recorder main body 2 by a rotation shaft 4 provided near the bottom surface. On the top surface of the tape recorder main body 2, clasps 5, 5 for attaching a shoulder belt, a handle, etc., a microphone 6, and operation buttons 7 for selecting various operation modes are arranged.
Various input/output jacks 8, etc. are arranged on the side.

Furthermore, an operating knob 10 as an operating member for unlocking the lid is provided near the tip of the cassette lid 3 on the front side of the main body 2. In the state shown in FIG. By moving the cassette lid 3 in the direction of arrow A in the figure, the lock of the cassette lid 3 is released, and the cassette lid 3 is opened to the state shown in FIG. 2 by the return force of the spring or the like. Locking claws 9a, 9 are provided on the inner surface of the upper end of the cassette lid 3.
b is formed, and is locked by the following locking mechanism.

That is, as shown in FIGS. 3 to 6,
In the embodiment of the present invention, the central part of an elastic linear body 20 such as a piano wire is bent into a substantially U-shape, and this U-shaped part 21 is formed into the operating knob 10 as an operating member. It is held in the holding part 12.
This holding part 12 includes, for example, a shaft 13 protruding from the center of the operating knob 10, and a pair of holding ribs 14a, 14 formed upright on the left and right positions of this shaft 13.
The shaft 13 and the holding ribs 14a, 14b can be formed together with the operating knob 10 by integral molding of synthetic resin.

Alternatively, the shaft 13 may be made of iron and insert molded. These shafts 13 and retaining ribs 14
After the U-shaped portion 21 of the linear body 20 is held by the members a and 14b, a holding plate 25 made of a piece of iron or the like with an insertion hole for the shaft 13 is attached, and a fitting holding member such as a so-called E-ring is attached. By fitting and fixing 26 to the shaft 13, the linear body 20 and the operating knob 10 are coupled and fixed. Note that the shaft 13 and the holding ribs 14a, 1
A fitting groove or the like may be formed at the position where 4b contacts the linear body 20, and the linear body 20 may be held and fixed only by the holding portion 12 of the operation knob 10.

Next, both ends of the linear body 20 are bent into a substantially U-shape that protrudes in the opposite direction from the U-shaped part 21 so as to form tapered parts 22a and 22b that are inclined in the same direction. , these tapered parts 22a, 2
2b to the contact portion 15a, 1 of the tape recorder main body 2.
5b, respectively. Here, a stepped portion 16 is formed at a position facing the tip of the cassette lid 3 in the tape recorder main body 2, and this stepped portion 1
Elongated holes 17a and 17b are formed in the vertical portions of the linear body 20, respectively, and the approximately U-shaped tops forming the tapered portions 22a and 22b of the linear body 20 are used as lock portions 23a and 23b. Lock part 2
3a, 23b are guided and inserted into the respective elongated holes 17a, 17b. In this case, one end side in the longitudinal direction of each of these elongated holes 17a, 17b becomes the abutting portions 15a, 15b. The locking portions 23a and 23b lock the locking claws 9a and 9b formed at the tip of the cassette lid 3, respectively. Moreover, the straight part of the linear body 20 is
It is slidably guided back and forth in the direction of arrow A by the inner wall surface of the vertical portion of the step portion 16 .

In the lock mechanism having the above structure, when the cassette lid 3 is in the closed state as shown in FIG.
When the tapered portions 22a and 22b are moved in the direction of abutting the contact portions 15a and 15b, that is, in the direction of arrow A, each tapered portion 22 is moved as shown in FIG.
a, 22b are pressed by the abutting portions 15a, 15b, respectively, and the linear body 20 is elastically deformed so that each tapered portion 22a, The vicinity of 22b shifts. Therefore, the lock portions 23a, 23b are recessed inwardly of the stepped portion 16 of the tape recorder main body 2, and the engagement with the locking claws 9a, 9b of the cassette lid 3 is released. A force is applied to the cassette lid 3 in the opening direction (direction to achieve the state shown in FIG. 2) due to a returning force such as a spring, and the cassette lid 3 opens as the engagement is released. Then, the tape cassette can be loaded into the cassette storage section C of the tape recorder main body 2 or removed from the cassette storage section C.

Next, after loading the cassette or removing the cassette, when the cassette lid 3 is manually closed, the locking claws 9a, 9b lock the locking portions 23a, 23 of the linear body 20.
By pressing 3b, the linear body 20
The lid deforms elastically, making it easy to lock the lid.

Note that when the operation knob 10 is moved in the direction of arrow A (see FIG. 7), the linear body 20
The tapered portions 22a, 22b of the contact portions 15a, 15
b, a restoring force is also applied to return the operating knob 10 to its original position (see Figures 3 and 6), but the elastic restoring force of this linear body 20 alone is insufficient. In this case, a return spring 27 may be attached to the holding plate 25 or the like as shown in FIG.

As is clear from the above description, according to the lid locking mechanism according to the present invention, a single elastic linear body 20 such as a piano wire is attached to a locking member and a biasing means for locking the lid. Since it is used as a lid, it is possible to provide a lid locking mechanism that has an extremely simple structure and is easy to assemble. Further, the linear body 20 can be used not only as a biasing means for maintaining the locked state but also as a means for returning the unlocking operation member.

Note that the present invention is not limited to the above-mentioned embodiments. For example, the lid body to which the locking mechanism of the present invention is applied is not limited to the cassette lid of a cassette tape recorder, but can also be applied to audio equipment, television receivers, etc. It can also be easily applied to a lid body that covers a rarely used operation section on the front panel of a computer. Further, the linear body is not limited to the shape of the above embodiment, and for example, a linear body having three or more tapered portions may be used.

[Brief explanation of the drawing]

All figures show one embodiment according to the present invention.
2 and 2 are perspective views of the overall appearance of the cassette tape recorder to which the embodiment is applied, respectively showing the closed and open states of the cassette lid, and FIG.
The figure is a front view showing only the vicinity of the lock mechanism, Figure 4 is a cross-sectional view taken along the - line in Figure 3, Figure 5 is a cross-sectional view taken along the - line in Figure 3, and Figure 6 is a portion corresponding to Figure 3. FIG. 7 is a diagram showing the locking mechanism of FIG. 6 in an unlocked state. 2... Tape recorder body, 3... Cassette lid, 9a, 9b... Operation knob, 10... Holding section, 12... Shaft, 13... Shaft, 14a, 14b...
...Retaining rib, 15a, 15b...Abutment part, 20
... Linear body, 21 ... U-shaped part, 22a, 22b
...Tapered portion, 23a, 23b...Lock portion.

Claims (1)

[Scope of utility model registration request] A lid is placed on the main body cabinet so that it can be opened and closed freely.
The central part of the elastic linear body is processed into a substantially U-shape, the U-shaped part is held by a holding part formed on the operating member, and tapered parts are formed at both ends of the linear body, These tapered parts are arranged to face contact parts provided on the main body, and lock parts continuous with these tapered parts lock the locking part of the lid body, so that the operating member is held in place by the tapered part. By moving the tapered portion in a direction in which it abuts the protrusion, the tapered portion is displaced in a direction substantially perpendicular to the moving direction, and the locking portion continuous with the tapered portion engages with the locking portion of the lid. A locking mechanism for the lid, which is characterized by releasing the locking mechanism.