JPH0535501Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a dust cover opening/closing hinge that is particularly suitable for use in a record player.

(Background Art) The demand for significant cost reductions due to the appreciation of the yen extends to the field of hinges, and there is a strong desire to provide inexpensive hinges that meet the minimum requirements.

Conventionally, the dust cover was held at an intermediate opening angle,
In order to prevent the dust cover from closing suddenly, a hinge using a torsion spring is well known, but a hinge constructed in this way has a friction member to finely adjust the elasticity of the spring, and a hinge at one end. Since a hinge pin and the like are required for caulking, there is a problem in that the production cost is inevitably high, and it is no longer compatible with the above-mentioned current requirements.

On the other hand, with this type of hinge, if it is possible to prevent the dust cover from closing suddenly and to stably hold the dust cover at a constant opening angle,
It is not necessary to use the above-mentioned torsion coil spring, and thus the above-mentioned friction member and caulking pin can be omitted.

(Technical Problem) The technical problem of this invention is to provide a dust cover opening/closing device, especially for a record player, which can be manufactured at low cost while meeting the above-mentioned minimum requirements.

(Technical Means) In order to achieve the above-mentioned technical problem, this invention connects a mounting member and a support member rotatably with a hinge pin, and a curved portion on the side of the mounting member in the direction of rotation of the support member. In addition to protrudingly extending an elastic piece, a protrusion that contacts the elastic piece is provided on the support member side, and a recess that fits into the protrusion is provided inside the elastic piece.

This invention further provides that, when rotatably connecting the mounting member and the support member with a hinge pin, the hinge pins protruding from both sides of the support member are press-fitted into the hinge pin mounting hole provided on the side of the mounting member. It is composed of

(Function) Since the protrusion provided on the support member rotates in pressure contact with the elastic piece on the mounting member side, it is possible to prevent the dust cover from falling rapidly when the lid is closed, and at a certain opening angle, the protrusion rotates in pressure contact with the elastic piece on the mounting member side. By fitting into the recess provided in the dust cover, the dust cover can be stably held.

Further, since the hinge pin protruding from the supporting member side is press-fitted into the hinge pin mounting hole provided on the mounting member side to connect the two, the hinge pin constructed separately can be omitted.

(Embodiment) The drawings show an embodiment of this invention. In FIG. 1, 1 is a cabinet of, for example, a record player, 2 is a dust cover that covers the top surface of this cabinet 1, and this dust cover 2 is connected to a hinge 3,
3, it is rotatably attached to the cabinet 1.

Figures 2 and below show the structure of one of the hinges 3. According to the drawings, the hinge 3 is made of synthetic resin such as polyacetal, and is removably inserted into the storage hole 1a provided on the side of the cabinet 1. mounting member 4 and storage hole 2 provided on the dust cover 2 side.
It is composed of a support member 5 made of synthetic resin such as polyacetal, which is removably inserted into the a, and a hinge pin 6 which rotatably connects the support member 5 and the mounting member 4.

The mounting member 4 includes a mounting insertion portion 7 that is removably inserted into a storage hole 1a provided on the side of the cabinet 1;
The mounting insertion portion consists of a pair of hinge pin mounting portions 8, 8 that protrude from both sides of the upper part of the mounting insertion portion 7, and an elastic piece 9 that curves outward from the center of the upper portion of the mounting insertion portion 7. 7 has rib portions 7a, 7a, .
8a, and tapered grooves 8b, 8b provided toward the hinge pin insertion holes 8a, 8a. The curved inner surface of the elastic piece 9 has a pair of recesses 9a,
9a and relief portions 9b, 9b are provided.

The support member 5 has a mounting insertion portion 10 that is detachably inserted into the storage hole 2a provided on the dust cover 2 side.
and a pair of hinge pin holding parts 11, 11 protruding from both sides of the lower side of the mounting insertion part 10, from which the above-mentioned pair of hinge pins 6, 6 protrude. has been done. Furthermore, the mounting insertion portion 10 has a plurality of ribs 10.
a, 10a... are provided, and the hinge pin holding parts 11, 11 are provided with a pair of protrusions 12, 12.
And stopper parts 13, 13 are provided protrudingly.
Then, the hinge pin holding portions 11, 1 of the support member 5
1 is inserted between hinge pin attachment portions 8, 8 provided on both sides of the attachment member 4, and allows the hinge pins 6, 6 to be inserted into hinge pin insertion holes 8a, 8a.

Next, to explain the function and effect, first, when assembling the hinge pin 3, as shown in FIGS. 6
When applied to the tapered grooves 8b, 8b provided in the hinge pin mounting portions 8, 8 of the mounting member 4 toward the hinge pin insertion holes 8a, 8a, and pressed downward,
The hinge pin holding parts 11, 11 escape inward through the groove 11a provided in the center thereof, and the hinge pin attachment parts 8, 8 escape outward, so that the hinge pins 6, 6 are press-fitted between the hinge pin attachment parts 8, 8. ,
It is inserted into the hinge pin insertion holes 8a, 8a.

The mounting insertion portion 7 of the mounting member 4 of the hinge 3 assembled in this way is inserted into the storage hole 1a provided on the cabinet 1 side, and the mounting insertion portion 10 of the support member 5 is inserted into the storage hole provided on the dust cover 2 side. 2a and 2a respectively, installation of hinge 3 is completed,
The dust cover 2 is attached to the cabinet 1 so as to be openable and closable.

Thus, especially as shown in FIGS. 5 to 7, when the dust cover 2 is closed with respect to the cabinet 1, the protrusion 12 provided on the support member 5 side
is depressed into the relief portion 9b provided on the elastic piece 9 side, and is not in a press-contact state. Of course, this part may be in a press-contact state without providing a relief part, but if it is not in a press-contact state as in the embodiment, heat is applied during the press-contact state and the elastic piece 9
It has the advantage of being able to prevent deformation.

Next, when the dust cover 2 is opened from the above-mentioned state, the support member 5 rotates clockwise around the hinge pin 6, and the protrusion 12 initially
Since the protrusion 12 is located inside the elastic piece 9, it does not encounter any resistance, but since the protrusion 12 immediately comes into contact with the inside of the elastic piece 9, it encounters some frictional resistance and is opened. When opened to a certain opening angle, the protrusion 12 closes in the recess 9a provided in the elastic piece 9.
Since the dust cover 2 is fitted inwardly, the dust cover 2 is stably held at this opening angle, especially as shown in FIGS. 7 and 8. At the same time, stopper part 1
3 fits with the edge of the elastic piece 9 to prevent further opening of the lid. This maximum opening angle is approximately
It is 75°.

As another example, first, as a means to facilitate the installation of the hinge pin, an insertion groove having a portion slightly narrower than the inner diameter of the hinge pin insertion hole is provided in the radial direction of the hinge pin insertion hole. The hinge pin may be inserted into the hinge pin insertion hole from the groove. Furthermore, the hinge pin may be used as an independent member to connect the mounting member and the support member as in the prior art.

Next, one or the other of the mounting member and the supporting member may be fixed to the cabinet or the dust cover with screws or the like.

Furthermore, a plurality of recesses into which the protrusions are fitted may be provided, and in this case there is an advantage that the dust cover can be stably held at various opening angles.

(Effects) As explained in detail above, according to this invention,
Even if the conventionally used torsion coil spring is omitted, it meets the minimum requirements required for this type of hinge and can be manufactured at low cost.
It is possible to prevent the dust cover from being suddenly closed, and furthermore, it is possible to stably hold the dust cover at a constant opening angle. In addition, if the hinge pin is attached as shown in the embodiment shown in the drawings, the independent hinge pin can be omitted.
Furthermore, it is possible to achieve the effect of lowering manufacturing costs.

[Brief explanation of the drawing]

The drawings show an embodiment of this invention, and FIG. 1 is a perspective view schematically showing a record player implementing this invention, FIG. 2 is an exploded perspective view of a hinge portion according to this invention, and FIG. 3 is a partially enlarged sectional view of the mounting member, FIG. 4 is a plan view of the mounting member, and FIG. 5 is a side view of the hinge with the dust cover closed.
Figure 6 is a side sectional view with the dust cover closed, Figure 7 is a partially enlarged sectional view showing the main parts of this invention, and Figure 8 is a side sectional view with the dust cover opened. be. 1... Cabinet, 2... Dust cover, 3
...Hinge, 4...Mounting member, 5...Supporting member,
6, 6... Hinge pin, 8, 8... Hinge pin mounting portion, 9... Elastic piece, 9a, 9a... Recess, 9
b, 9b... relief part, 11, 11... hinge pin holding part, 12, 12... projection part.

Claims (1)

[Claims for Utility Model Registration] (1) A mounting member and a support member are rotatably connected by a hinge pin, and an elastic piece is protruded from the mounting member side and extends in a curved direction in the direction of rotation of the support member. Further, a protrusion that contacts the elastic piece is provided on the supporting member side, and a recess that fits with the protrusion is provided inside the elastic piece.
Hinge for opening and closing the dust cover. (2) When the mounting member and the support member are rotatably connected by a hinge pin, the hinge pins protruding from both sides of the support member are press-fitted into hinge pin mounting holes provided on the side of the mounting member. A hinge for opening and closing the dust cover.