JPS5916961Y2 - Dust cover opening/closing device - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a dust cover opening/closing device, particularly for record players, etc., using a side hinge.

For example, as disclosed in Japanese Utility Model Application No. 51-39174, a long frame is extended from the base plate of a side hinge consisting of a base plate and a rotating member, and this frame is inserted into a mounting hole provided on the cabinet. The conventional dust cover opening/closing device, in which the dust cover is inserted removably and the side part of the dust cover is fixed to a rotating member, requires extra materials and processing fees for the frame part, and the rotation fulcrum of the dust cover is Because it moves further forward from the rear end than when using a rear hinge,
It became necessary to remove the rear lower end of the dust cover, and there was a drawback that dust easily entered the cabinet from this part.

This invention is intended to solve the above-mentioned drawbacks of the prior art. According to the drawings, in FIGS. is provided.

Although this raised portion 2 is constructed integrally with the cabinet 1 in the embodiment, it may be formed separately from the cabinet 1 and later fixed to the upper rear upper surface of the cabinet 1.

At one end of this raised portion 2, a locking convex portion 3a for preventing rotation is provided.
, 3a, which is open on one side, is provided, and a side hinge 4 is housed in this housing hole 3 so as not to rotate itself.

The side hinge 4 is constructed by inserting, in order, a base plate 6, a friction member 7 having a mounting portion 7a and serving as a rotating member made of Duracon, and a spring washer 8 into a caulking pin 5 having a head 5a, and caulking the ends. A large-diameter torsion coil spring 9 is elastically installed between the friction member 7 and the base plate 6 while being wrapped around the friction member 7, and engagement recesses 6a, 6a are provided on the outer periphery of the base plate 6. Locking protrusions 3a, 3a provided in the storage hole 3
At the same time, the mounting portion 7a is fitted into the mounting hole 10b provided in the side plate 10a of the dust cover 10, and is secured with screws (not shown). Both should be fixed.

In addition, 11 is a cap, and 7b is a guide groove, and this guide groove 7b is used to increase the friction coefficient of the friction member 7 and fit a protrusion 6b protruding from the base plate 6 to regulate the opening angle of the dust cover 10. belongs to.

When implemented in this way, the side hinge 4 has the advantage that its main body is almost invisible from the outside.

3 to 5 show another embodiment, and according to the drawings, the end portion of the raised portion 22, which is integrally provided above the rear end of the cabinet 21 over both ends thereof, A side-open storage hole 23 is provided, and a side hinge 24 is inserted into this storage hole 23 from above.

The side hinge 24 has a friction member 27 that also serves as a spring case, and a sleeve portion 26a that protrudes from both sides of the base plate portion 26.

26 a is the slit in the storage hole 23) 23 a, 23 a
By fitting it in, it is constructed so that it does not rotate and does not come out laterally.

In addition, 25 is a peeling pin, 28 is a spring washer, 29 is a torsion coil spring, 30 is a dust cover, 30a is a side plate, and 31 is a cap.

When carried out in this manner, there is an advantage that the dust cover 30 can be attached and detached from the cabinet 21 with the side hinges 24 very easily.

Therefore, according to the above invention, the dust cover 10.
The part of the rear plate that was removed with 30 closed is the raised part 2,
22 is closed, it is possible to prevent dust from entering the inside of the cabinet H, 21 as much as possible.

Next, when the dust cover 10.30 is opened, the board section 6°2
Since the dust cover 10.6 is fixed so as not to rotate inside the storage holes 3, 23, the dust cover 10.30 is prevented from friction by the elasticity of the torsion coil springs 9, 29 without feeling its weight. opened together with members 7 and 27, and
The elasticity of this spring and the dust cover 10.30
Due to the friction force generated by the friction members 7, 27 and the base plate parts 6, 26, which rotate together, the dust cover 10.3
This can be stably stopped and held at an intermediate opening angle balanced with zero weight.

Moreover, when the dust cover 10.30 is closed, the elasticity of the torsion coil springs 9, 29 prevents it from closing suddenly.

As explained in detail above, according to this invention, it is possible to omit the frame extending from the base plate, which reduces the material cost, processing cost, and the part to be stored in the storage hole of the side hinge. By saving on painting, etc., manufacturing costs for side hinges can be significantly lowered, and
Even if the rear plate of the dust cover is removed, the effect of preventing dust from entering the cabinet can be achieved without any special effort.

[Brief explanation of drawings]

FIG. 1 is a partial sectional view of this invention, FIG. 2 is a sectional view taken along line A-A in FIG. 1, FIG. 3 is a partial sectional view showing another embodiment, and FIG. 4 is a partial plan view of the same. FIG. 5 is a sectional view taken along line BB in FIG. 3. 1.21...Cabinet, 2,22...Curved raised part, 3.23...Storage hole, 3a, 3a...
... Locking convex part, 4゜24 ... Side hinge,
6, 26...Open substrate portion, 5a. 6a... Engagement recess, 7, 27... Friction member, 9, 29... Bent torsion coil spring, 10.
30... Song dust cover, 23 a, 23 a...
...Slit, 26a, 26a...Sleeve part.

Claims (1)

[Scope of utility model registration request] A raised part reaching both left and right ends is provided on the rear upper surface of the cabinet, a storage hole is provided in this raised part, a side hinge is stored in this storage hole, and the side hinge is attached to the base plate and this base plate by friction. and a torsion coil spring that is wound around the friction member and elastically installed between the base plate and the friction member, the base plate is removably fixed to the storage hole, and the base plate is removably fixed to the storage hole. A dust cover opening/closing device characterized in that a side plate of the dust cover is attached to the friction member.