JPH0223748Y2 - - Google Patents

Description

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

The slider is biased in one direction and stored in the mounting member that also serves as a spring case, which is stored in the mounting hole provided on the cabinet side. In a conventional hinge in which the top of the slider is brought into contact with the top of the slider, the position where the slider supports the pressure receiving part changes moment by moment according to the opening/closing angle of the dust cover, so the torque curve of the hinge does not match the opening/closing torque curve of the dust cover. Since the dust cover forms a close parabola, it has the advantage of being able to stably stop the dust cover at any intermediate opening angle without the need for a friction member, and that it can be stopped over a wide range, but the spring case is housed on the cabinet side. Since it is necessary to create a storage hole for the dust cover, there is a drawback that it lacks compactness and versatility, and there is also the problem that it cannot be used as is depending on the shape of the dust cover.

The purpose of this invention is to provide a more compact and highly versatile hinge while retaining the advantages of the prior art described above.

This invention will be explained in detail below based on an embodiment shown in the drawings. In FIGS. 1 to 3, 1 is made of a material such as polyacetal, which has mounting portions 1a, 1a protruding from both sides. This is a spring case made of synthetic resin that also serves as a mounting member, and the mounting portions 1a, 1a are fixed to the rear of the cabinet A with screws. A slider 2 is housed inside the spring case 1 so as to be able to move up and down, and the slider 2 and the spring case 1
A compression coil spring 3 is connected between the bottom plate 1b and the bottom plate 1b.
is installed to constantly urge the slider 2 upward. Both side plates 1c, 1c are protruded from the top of the spring case 1, and these side plates 1c, 1c
Projecting walls 1d and 1d are erected on one side. A support member 4 also made of synthetic resin such as polyacetal is pivotally attached to the side plates 1c, 1c by hinge pins 5. This support member 4 is a flat plate that extends in the axial and radial directions of the hinge pin 5, and both side plates 4b, 4b are provided protruding from both sides of one end of the flat plate portion 4a. A pressure-receiving portion 4c is provided on the lower surface of the dust cover 4c and is positioned forward of the hinge pin 5, and the flat portion 4a is attached to a mounting portion b provided at the rear of the dust cover B, which is also flat.

A support pin 6 is in contact with the pressure receiving portion 4c, and this support pin 6 is installed over a pair of holding pieces 2a, 2a protruding from the top of the slider 2 in the same direction as the hinge pin 5.

Therefore, when the dust cover B is closed as shown in FIG.
Since the weight of the dust cover B exceeds the elasticity of the compression coil spring 3, the dust cover B stably maintains the closed state. When the dust cover B starts to open, the weight of the dust cover B is reduced by the force of the slider 2 pushing up the support member 4, and the dust cover B is opened using the hinge pin 5 as a fulcrum, and accordingly, the pressure receiving part provided on the support member 4 4c rotates upward, the slider 2 moves upward while changing the contact position of the support pin 6 with respect to the pressure receiving part 4c moment by moment, and the dust cover B is opened approximately 35° to 40°. The weight of the dust cover B and the elasticity of the compression coil spring 3 are balanced, and the dust cover B can be stably stopped and held at the intermediate open position.

When the dust cover B is further opened, the elasticity of the compression coil spring 3 becomes stronger than the force of the dust cover B trying to push down the slider 2 via the pressure receiving part 4c of the support member 4, and automatically You will have to push open the dust cover B. However, in embodiments, when opened approximately 65 degrees,
The tips of the side plates 4b, 4b of the support member 4 are connected to the projecting walls 1 provided on the side plates 1c, 1c of the spring case 1.
d and 1d, and will not open any further.

When closing the dust cover B, contrary to the previous step, the dust cover B is initially closed against the elasticity of the compression coil spring 3, and is balanced in the range of approximately 35° to 40°, and below 35°, the dust cover B is closed. , since the weight of the dust cover B is greater, the dust cover B is quietly closed.

The feature of this embodiment is that the spring case 1 has mounting parts 1a, 1a protruding from the spring case 1, making it easy to attach to the cabinet of any model of record player, giving it versatility. The reason is that we have tried to make it more compact by omitting as many parts as possible.

Figures 4-6 show other embodiments of the support member, where like reference symbols indicate the same elements as in the previous embodiment. According to the drawings, the tip of the support member 7 is divided into three parts by grooves 7a, 7a, and the locking protrusion 7b in the center is slightly thinner and has spring properties. , a protrusion 7c is provided. On the other hand, the dust cover C to which this support member 7 is attached is provided with a bag-shaped attachment hole c, and the tip of this attachment hole c is provided with a locking hole 8 for locking the protrusion 7c. .

When carried out in this manner, there is an advantage that the attachment state of the support member 7 to the dust cover C is stabilized, and there is no fear that the support member 7 will come off during use.

In addition, in this embodiment, the position and shape of the protrusion 7c are not necessarily limited to those in the embodiment, and for example, it is also possible to provide this on both sides of the tip of the support member 7. Further, the position and shape of the mounting hole c provided on the dust cover C side are not limited to those in the embodiment. Mounting hole c of support member 7
Since the part where the protrusion 7c is provided is thin, the protrusion 7c will not escape and cause any trouble.
Just remove c and pull it.

Figures 7-8 show yet another embodiment of the support member, where like reference symbols indicate the same elements as in the previous embodiment. According to the drawings, in the previous embodiments, the support member is configured to be perpendicular to the spring case when the dust cover is closed, but in this embodiment, the support member is configured to be perpendicular to the spring case 1. A locking protrusion 9a having a spring property and a protrusion 9b is protrudingly provided at the tip of the support member 9.
The pressure receiving portion 9c is provided in a protruding manner at the lower end of the support member 9.

When carried out in this way, it can be used as a box-shaped dust cover D,
A mounting hole 10 having a locking portion 10a at the top is provided at the lower end of the rear plate d of the dust cover D, and while the support member 9 is inserted into the mounting hole 10, the protrusion 9b provided on the locking protrusion 9a is engaged. This is to engage with the stop portion 10a.

Note that the shape and structure of the locking protrusion 9a are not limited to those of this embodiment, but are similar to those shown in FIGS. 4 to 6.
This is mutually compatible with the one shown in the figure.

As another embodiment, the mounting hole provided on the dust cover side and the portion of the support member inserted into the mounting hole may be provided with recesses and recesses that engage with each other. Effects similar to those shown in FIG. 8 could be achieved.

Since this invention is constructed as described above, the position of the support pin attached to the slider relative to the pressure receiving part changes moment by moment according to the opening/closing angle of the dust cover, so the torque curve of the hinge is adjusted to the opening/closing torque of the dust cover. Since it can be made into a parabola that is close to a curve, the dust cover can be stably held at an intermediate opening angle even if the friction member is omitted, and its stopping range can be expanded, while retaining this advantage. This makes it possible to provide a more compact and highly versatile hinge.

At that time, if the support pin is installed on a pair of holding pieces that protrude from the slider, a gap will be created between the support pin and the top surface of the slider.
The pressure receiving portion protruding from the lower surface of the support member does not come into contact with the upper surface of the slider and hinder its smooth movement.

In addition, if the support member is made into a flat plate with a protrusion or recess for locking, or a locking protrusion with spring properties, the support member can be inserted into the mounting hole provided in the dust cover. By engaging the uneven portions and locking protrusions with the locking holes and locking portions provided in the mounting hole, even if the support member is formed into a flat plate, it will not slip out from the mounting hole during use. This has the advantage that there is no need to worry about it being damaged.

[Brief explanation of the drawing]

The drawings show one embodiment of this invention, FIG. 1 is a rear view thereof, FIG. 2 is a sectional view taken along line A-A in FIG. 1,
FIG. 3 is a sectional view taken along the line B-B in FIG. 1, FIG. 4 is a plan view showing another embodiment of the support member, FIG. 5 is a side sectional view of a part of the same, and FIG. 6 is an example of its use. FIG. 7 is a partial rear view showing still another embodiment of the support member, and FIG. 8 is a partial cross-sectional view showing an example of its use. A... Cabinet, B, C, D... Dust cover, b... Mounting part, c... Mounting hole, d... Rear plate, 1... Spring case, 1a, 1a... Mounting part, 1c, 1c ...Both sides plates, 2...Slider, 2a, 2a...Holding piece, 3...Compression coil spring, 4, 7, 9...Supporting member, 4a...Flat-shaped portion, 4c...Pressure receiving part, 6 ...Support pin,
7b, 9a...Locking protrusion piece, 7c, 9b...Protrusion,
8... Locking hole, 10... Mounting hole, 10a... Locking part.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A spring case made of synthetic resin with mounting parts on the left and right sides and only the top open, and a synthetic resin spring case that is pivoted via a hinge pin to both side plates protruding from the top of the spring case. A support member made of resin;
a slider that is slidably housed in the spring case via a compression coil spring; The end portion of the dust cover is removably attached, and a pressure receiving portion is provided on the lower surface of the flat plate portion in a position forward of the pivot point by the hinge pin, and the pressure receiving portion is provided to protrude from the slider. A hinge for opening and closing a dust cover, characterized in that a pair of holding pieces are brought into contact with support pins, and the position of this contact changes moment by moment depending on the opening and closing angle of the support member. 2. The dust cover opening/closing hinge according to claim 1, wherein the support member is provided with a locking protrusion having spring properties on its flat plate-like portion. 3. The dust cover opening/closing hinge according to claim 1, wherein the support member is provided with a locking protrusion or recess on its flat plate-like portion.