JPH051032Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an opening/closing lid opening/closing holding device that is most suitable for application to, for example, a cassette lid of a cassette type tape recorder.

[Summary of the idea]

The present invention consists of a first guide plate attached to the main body side, a second guide plate attached to the opening/closing lid side, a guide pin engaged with both of these guide plates, and a guide pin that is connected to the main body. In an opening/closing holding device for an opening/closing lid such as a cassette lid, the opening/closing lid is configured to have a spring that biases upward movement and is configured to rotate and bias the opening/closing lid by switching between the open lid position and the closed lid position. At this time, the first guide plate attached to the main body side can be easily temporarily fixed to the main body against the spring, thereby making it possible to significantly improve the workability of assembly.

[Conventional technology]

A conventional example of an opening/closing/closing holding device for an opening/closing lid applied to a cassette lid of a cassette type tape recorder will be explained with reference to FIGS. 5A to 6.

As shown in FIG. 6, this conventional example includes a main body 1,
An opening/closing lid 3 rotatably attached to the upper part of the main body 1 via a fulcrum shaft 2; a first guide plate 4 attached to the main body 1 and disposed inside the opening/closing lid 3;
A second guide plate 5 is attached to the inside of the opening/closing lid 3 and arranged parallel to the first guide plate 4, and a second guide plate 5 is provided on the first guide plate 4 and the second guide plate 5 and arranged so as to cross each other. The first guide groove 6 and the second guide groove 7 that are connected to each other, the guide pin 8 that is engaged with both the first guide groove 6 and the second guide groove 7, and the guide pin 8 that is moved upwardly of the main body 1. The spring 9 is provided with a spring 9 that urges the spring to move to a state having a movement component of . Note that the opening/closing lid 3 has a hole 12 in an elastic arm 11 integrally molded with the opening/closing lid 3 from synthetic resin or the like.
It is fitted onto the fulcrum shaft 2 by. Further, as will be described later, the first guide plate 4 has a small protrusion 13 integrally provided at one end 4a thereof and a small hole provided in the main body 1.
4, and the other end 4b is inserted into the upper surface 1a of the main body 1.
When inserted from above into the insertion groove 15 provided in the main body 1, the first
Set screw 1 inserted perpendicular to guide plate 4
7 is screwed and fixed into a screw engagement hole 18 provided at the other end 4b. Also, the second
The guide plate 5 is opened and closed by a pair of set screws 19.
It is attached to the inner surface 3a of. Further, the spring 9 is constituted by a tension coil spring, and both ends thereof are locked to the guide pin 8 and a pin 20 provided on the second guide plate 5. Note that 21 is an opening provided on the upper surface 1a of the main body 1.

Then, as shown in FIGS. 5A and 5B, by opening and closing the opening/closing lid 3 by rotating it in the directions of arrows a and b about the fulcrum shaft 2, the guide pin 8 is moved against the spring 9 into the first position. Guide groove 6 and second guide groove 7
At this time, the slopes 6a in two directions provided in the first guide groove 6
and 6b to move the guide pin 8 in two directions (arrow c
The opening/closing lid 3 is selectively biased to move in the directions of arrows "a" and "d", thereby switching the opening/closing lid 3 to an open position and a closed position, respectively, and urging the opening/closing lid 3 to rotate in the directions of arrows "a" and "b". .

When assembling, first, the hole 12 of the arm 11 is fitted into the fulcrum shaft 2, as shown in FIG. 5A. Next, with the first guide plate 4 engaged with the guide pin 8 through its first guide groove 6,
The small projection 13 on one end 4a of the first guide plate 4 is inserted into the small hole 14 of the main body 1 from the direction of arrow f. Next, the first guide plate 4 is rotated downward (in the direction of arrow g) about the small protrusion 13 against the spring 9, and the other end 4b of the first guide plate 4 is Insert into the insertion groove 15 from above. Next, the screw insertion hole 1 of the main body 1 is viewed from the direction perpendicular to the first guide plate 4.
The tip of the set screw 17 inserted into the first guide plate 6 is screwed into the screw engagement hole 18 of the other end 4b of the first guide plate 4 to be fixed.

[Problem that the invention attempts to solve]

However, in this conventional example, the opening/closing lid 3 is first attached to the main body 1, and then the first guide plate 4 is attached.
When the first guide plate 4 is attached to the main body 1, the first guide groove 6 is engaged with the guide pin 8 as shown in FIG. 5A. In this state, the opening/closing lid 3 must be rotated (opened) in the direction of arrow a to attach it. At this time, when the opening/closing lid 3 is rotated in the direction of the arrow a, the first guide plate 4 is lifted in the direction of the arrow i by the guide pin 8 which is pulled in the direction of the arrow h by the spring 9, and the set screw 17 cannot be screwed into the screw engagement hole 18.

Therefore, conventionally, as shown by the chain line in FIG. 5A,
Press the other end 4b of the first guide plate 4 from above with your finger or the like to keep the first guide plate 4 rotated in the direction of arrow g against the spring 9, and keep it in this state. , the set screw 17 was screwed into the screw engagement hole 18 for assembly. However, such an assembly method has a drawback that workability is very poor and productivity is not improved.

Therefore, the present invention allows the first guide plate attached to the main body side to be easily temporarily fixed to the main body against the spring during assembly. This allows the screws to be aligned with the screw insertion holes in the main body.

[Means for solving problems]

In the above-described opening/closing lid opening/closing holding device, one surface in which the screw insertion hole in the insertion groove provided in the main body is opened is configured as a vertical surface, and the other side of the first
The other end of the guide plate is configured with an inclined surface for drawing in,
A rib is provided on the upper surface of the main body at a position opposite to the small hole of the insertion groove and protrudes from the vertical surface by approximately the thickness of the first guide plate, and when assembled, the first guide When the plate is rotated downward about the small projection portion against the spring and the other end of the first guide plate is inserted into the insertion groove from above, the other end of the first guide plate The first end is guided by the inclined surface and drawn toward the vertical surface to abut against the rib.
By abutting the other end of the guide plate against the rib, this first
The guide plate is configured to be temporarily fixed to the main body against the spring, and the screw engagement hole of the first guide plate is aligned with the screw insertion hole of the main body due to the temporary fixing. It is.

[Effect]

Next, the operation of the present invention will be explained with reference to FIGS. 2A to 4B.

When assembling, first, as shown in FIG. 2A, the hole 12 of the arm 11 is fitted into the fulcrum shaft 2, and then the first guide plate 4 is engaged with the guide pin 8 through its first guide groove 6. let

Next, as shown in FIG. 2B (dotted line in FIG. 3A), the small protrusion 13 on one end 4a of the first guide plate 4 is inserted into the small hole 14 of the main body 1 from the direction of arrow f.

Next, Figure 2B, Figure 3A (solid line) and Figure 4A
As shown in the figure, the other end 4b of the first guide plate 4 is pressed downward (in the direction of arrow g) from above against the spring 9 with a finger or the like, and the first guide plate 4 is moved around the small protrusion 13. Rotate it downward and push the other end 4b into the insertion groove 15 of the main body 1 from above.

At this time, the other end 4b is drawn (pulled) in the direction of arrow j by the drawing action (guiding action) of the inclined surface 24 of the insertion groove 15. The other end 4b is shown in FIG. 2B.
As shown in FIGS. 3B and 4B, the first guide plate 4 is in close contact with the vertical surface 23 of the insertion groove 15 and has a vertical shape, and the other end 4b is in contact with the rib 25 of the main body 1. is easily temporarily fixed to the main body 1 against the spring 9.

Then, along with the temporary fixing, the screw engagement holes 18 of the first guide plate 4 are aligned with the screw insertion holes 16 of the main body 1.

In this temporarily fixed state, as shown in FIG. 2B, a rotational force in the direction of arrow i is applied to the first guide plate 4 by the guide pin 8 which is pulled in the direction of arrow h by the spring 9. , since the rib 25 prevents the rotation in the direction of the arrow i, the first guide 1
4 will not fall off above the main body 1.

Therefore, even if a finger or the like is removed from the other end 4a of the first guide plate 4, the temporarily fixed first guide plate 4 will not fall off above the main body 1.

Therefore, while keeping your finger etc. off the other end 4b of the first guide plate 4,
As shown in the figure, if the set screw 17 is inserted into the screw insertion hole 16 of the main body 1 from the direction of arrow k, the set screw 1
7 is accurately engaged with the screw engagement hole 18 of the first guide plate 4, so the set screw 17 is screwed into the screw engagement hole 18, and the other end 4a of the first guide plate 4 is vertically The assembly is completed by fixing it in close contact with the surface 23.

〔Example〕

An embodiment of an opening/closing lid opening/closing holding device in which the present invention is applied to a cassette lid of a cassette type tape recorder will be described below with reference to FIGS. 1 to 4B. Note that the same reference numerals are given to the same structural parts as those of the conventional example shown in FIGS. 5 to 6B, and the explanation thereof will be omitted.

In this embodiment, as shown in FIG. 4A, one surface on which the screw insertion hole 16 in the insertion groove 15 provided in the main body 1 is opened is configured as a vertical surface 23, and the surface opposite to the vertical surface 23 is configured. The other surface is configured as an inclined surface 24 for drawing in the other end 4b of the first guide plate 4. Further, as shown in FIGS. 2B and 3B, on the upper surface 1a of the main body 1, at a position opposite to the small hole 14 of the insertion groove 15, from the vertical surface 23 to the position approximately equivalent to the thickness A of the first guide plate 4. A protruding rib 25 is provided. Note that the rib 25 is integrally molded on the upper surface 1A of the main body 1.

Note that the operation related to the assembly of this embodiment has been explained in the [Operation] section above, and will therefore be omitted.

Although the embodiments of the present invention have been described above, the present invention is not limited to the embodiments, and various effective changes can be made based on the technical idea of the present invention.

Furthermore, the present invention is not limited to the device for opening and closing the cassette lid of a cassette type tape recorder;
It can be applied to opening/closing holding devices for opening/closing lids of various electronic devices, etc.

[Effect of idea]

As mentioned above, the present invention, upon assembly,
The first guide plate attached to the main body side is configured so that it can be easily temporarily fixed to the main body against the force of the spring, and in addition to the temporary fixing, the screw engagement hole of the first guide plate is connected to the screw of the main body. Since it is designed to match the insertion hole, when assembling, as in the conventional method, press the other end of the first guide plate from above with your finger, etc., and insert it into the main body of the first guide plate using the set screw. There is no need to perform screw tightening work. That is, while keeping your finger etc. off the first guide plate,
The guide plate can be screwed to the main body, and if the set screw is inserted into the screw insertion hole of the main body, the tip of the set screw will fit into the screw engagement hole of the first guide plate. Since they are engaged accurately, the work of screwing the first guide plate using the set screws can be performed very easily. Therefore, the workability of assembly is significantly improved, and productivity can be increased.

[Brief explanation of drawings]

1 to 4B show an embodiment of the present invention, in which FIG. 1 is a perspective view of the main parts, FIGS. 2A to 2C are sectional views explaining the assembly operation, and FIG.
FIG. A and FIG. 3B are plan views for explaining the assembly operation, FIG. 4A is a sectional view taken along the line AA in FIG. 3A, and FIG. 4B is a sectional view taken along the line BB in FIG. 3B. 5A and 5B are cross-sectional views for explaining the assembly operation of the conventional example, and FIG. 6 is an exploded perspective view of the conventional example. In addition, in the symbols used in the drawings, 1... main body,
2... Fulcrum shaft, 3... Opening/closing lid, 4... First guide plate, 4a... One end, 4b... Other end, 5... Second guide plate, 6... First guide groove, 7... 2nd guide groove, 8... Guide pin, 9... Spring, 13... Small projection, 14... Small hole, 15... Insertion groove, 16...
Screw insertion hole, 17... Set screw, 18... Screw engagement hole, 23... Vertical surface, 24... Inclined surface, 25...
It's ribs.

Claims (1)

[Claims for Utility Model Registration] A main body, an opening/closing lid rotatably attached to the upper part of the main body via a fulcrum shaft, and a first guide plate attached to the main body and disposed inside the opening/closing lid. , a second guide plate attached to the inside of the opening/closing lid and arranged parallel to the first guide plate, and a first guide plate provided on the first guide plate and the second guide plate and arranged to intersect with each other. A guide groove, a second guide groove, a guide pin engaged with both the first guide groove and the second guide groove, and a spring that biases the guide pin to move in a state having a movement component upward of the main body. The guide pin is moved along both the first guide groove and the second guide groove against the spring by opening and closing the opening/closing lid by rotating it around the fulcrum shaft, and at this time, By selectively moving and biasing the guide pin in two directions using slopes in two directions provided in the first guide groove, the opening/closing lid is switched to the open lid position and the closed lid position and is biased to rotate. When assembling, the first guide plate is engaged with the guide pin through its first guide groove, and
A small protrusion provided at one end of the first guide plate is inserted into a small hole provided in the main body, and then the first guide plate is rotated downward against the spring around the small protrusion. Then, insert the other end of the first guide plate into the insertion groove provided on the top surface of the main body from above, and then insert the set screw into the screw insertion hole of the main body from the direction perpendicular to the first guide plate. In the opening/closing lid opening/closing holding device, the opening/closing lid is fixed by screwing the tip of the first guide plate into a screw engagement hole provided at the other end of the first guide plate, wherein the screw is inserted into the insertion groove provided in the main body. One surface with holes is configured as a vertical surface,
The other surface opposite to the vertical surface is configured as an inclined surface for drawing in the other end of the first guide plate, and a A rib is provided that protrudes from a vertical surface by an amount equivalent to the thickness of the first guide plate, and during assembly, the first guide plate is rotated downwardly against the spring around the small protrusion. , when the other end of the first guide plate is inserted into the insertion groove from above, the other end of the first guide plate is guided by the inclined surface and drawn toward the vertical surface side, and is inserted into the rib. This first
By abutting the other end of the guide plate against the rib, this first
The guide plate is configured to be temporarily fixed to the main body against the spring, and the screw engagement hole of the first guide plate is aligned with the screw insertion hole of the main body due to the temporary fixing. An opening/closing holding device for an opening/closing lid characterized by: