JPS6319984Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a hinge for opening and closing a dust cover of a player, etc.

As shown in FIGS. 1 and 2, conventional dust cover opening/closing hinges of this type include a mounting member 1 attached to a cabinet A of a record player, etc., and a support member 2 to which a dust cover B is attached. The respective side plates 1a, 1a, 2a, 2a are rotatably connected with a caulking pin 3, and this caulking pin 3
A torsion coil spring 4 wound in a ring is resiliently installed between the mounting member 1 and the support member 2, and the both side plates 1a and 1 of each of the mounting member 1 and the support member 2 are
The caulking pin 3 is attached to the overlapping part of a, 2a, 2a.
A torsion coil spring 4 is constructed by inserting a permeable member 5 such as a spring washer and a friction member 6 such as a fiber while inserting the torsion coil spring 4.
Due to the fact that the torque curve of the dust cover B does not necessarily match the torque curve of the dust cover B, and the fact that the friction by the friction member 6 is always applied, it is easy for the dust cover B to be slightly lifted when the dust cover B is closed. Even if this is prevented by adjusting the torque of the torsion coil spring 4, there is still a problem in that this lifting occurs due to the friction caused by the friction member 6 when vibration is applied from the outside.

This invention solves this problem, and the purpose is to provide a hinge for opening and closing the dust cover of players, etc., which prevents the friction from working within a certain opening angle range of the dust cover. be.

One embodiment of this invention will be explained in detail below based on the drawings. In FIGS. 3 to 6,
A lock plate 7 attached to the rear upper end of the cabinet C has a mounting member 8 made of iron plate and removably inserted therein and having a substantially U-shaped planar shape.
The rear lower end of the box-shaped dust cover D made of synthetic resin is held between the socket portion 9a of the support member 9. This support member 9 is constructed by molding a synthetic resin such as polyacetal, and has a spring case portion 9b protruding from one side of the socket portion 9a. The side plates 9c, 9c are inserted between the side plates 8a, 8a of the mounting member 8, and the caulking pin 10
are rotatably connected by. A torsion coil spring 11 is wound around the caulking pin 10, one end 11a abuts against the inner wall of the spring case portion 9b, and the other end 11b is locked into a locking protrusion 8b provided on the mounting member 8. has been done.

Then, protrusions 8c, 8c are provided on the tops of the side plates 8a, 8a of the mounting member 8, and protrusions 8c, 8c are provided beside the spring case portion 9b of the support member 9, with a constant width apart from the side plates 9c, 9c. In addition, protrusions 9d, 9d are provided at a certain distance from the protrusions 8c, 8c.
The friction grooves 12, 12 have a width slightly narrower than the width of the protrusions 8c, 8c.
is provided.

Therefore, when the dust cover D is closed, there is no active friction as in the prior art, so it is possible to prevent the dust cover D from floating due to this friction. , when the dust cover D is opened, the protrusions 8c, 8c engage the friction grooves 12, 8c at a certain opening angle (approximately 40 degrees in the embodiment).
12 to cause friction, and the ability to stop and hold the dust cover D in a range equal to or greater than this opening angle is increased and stabilized.

Incidentally, the maximum opening angle of this dust cover D is about 65 degrees, and since the protrusions 8c, 8c abut against the bottoms of the friction grooves 12, 12, it cannot be opened any further.

Next, when closing the opened dust cover D,
Friction is present up to an opening angle range of about 40°, but in a lower opening angle range, the protrusions 8c, 8
Since c escapes from the friction grooves 12, 12,
No friction occurs by this means. The lifting caused by the reaction when the dust cover D is closed is caused by the torque of the torsion coil spring 11
Since the weight is almost balanced with the weight of the lid, and in this closed state, there is no friction as in the conventional case, so there is no risk of this occurring. Further, as described above, the dust cover D does not float even if vibrations or shocks are applied from the outside after the dust cover D is completely closed.

It should be noted that what has been described above is just one embodiment of this invention, and it goes without saying that there are various other modified embodiments.

As explained in detail above, this device has a simple structure and can prevent the dust cover from floating when the dust cover is closed. Since the protrusions are press-fitted, the dust cover can be stopped and held at the free stop by this frictional force, and the conventionally used elastic members such as spring washers and friction members such as fibers can be omitted. Therefore, it is possible to achieve effects such as being able to reduce costs.

[Brief explanation of the drawing]

Fig. 1 is a front view of a conventional dust cover opening/closing hinge, Fig. 2 is a side view of the same, Fig. 3 is a front view of a dust cover opening/closing device according to this invention, and Fig. 4 is a side view of the same. FIG. 5 is an exploded perspective view, and FIG. 6 is a plan view of the support member. A, C... Cabinet, B, D... Dust cover, 1, 8... Mounting member, 2, 9... Support member, 3, 10... Caulking pin, 4, 11... Torsional coil spring, 8c, 8c...protrusion, 1
2, 12...Friction groove.

Claims (1)

[Scope of utility model registration request] A mounting member that is attached to the cabinet, a support member that supports the dust cover, a hinge pin that rotatably connects the mounting member and the support member, and a hinge pin that connects the support member in one direction between the mounting member and the support member. The dust cover is provided with a projection on the mounting member side and a friction groove into which the projection is press-fitted on the support member side, and the dust cover is opened at a constant angle. A hinge for opening and closing a dust cover of a player, etc., characterized in that the protrusion is press-fitted into the friction groove at an angle greater than or equal to an angle to control rotation of the support member.