JPH0210637Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an improvement in a mounting device for a lid, such as a tape recorder cassette lid, which is rotatably mounted to a housing by a single fulcrum shaft.

BACKGROUND ART AND PROBLEMS Various methods have been used to rotatably attach the cassette lid of a tape recorder to a cabinet. The one shown in FIG. 3 is of a type in which a cassette lid 1 is rotatably attached to a cabinet 3 by a single fulcrum shaft 2. In this case, both ends of the fulcrum shaft 2 are as shown in FIG.
As shown in FIGS. 2A and 2B, it is held by downward U-shaped bearings 5 and 6 formed on the inside of the side wall 4 of the cabinet 3, and an upward U-shaped U shaped coaxial with the bearings 5 and 6 is located in between. It is held by a letter-shaped groove 7.

To attach this type of cassette lid 1 to the cabinet 3, first the fulcrum shaft 2 is inserted through a pair of brackets 8a and 8b provided on the cassette lid 1.
At this time, the fulcrum shaft 2 is inserted up to the outer surface of the bracket 8b, and in this state, the bracket 8b is inserted into the notch 9 of the cabinet 3 (FIG. 1A). Next, as shown in FIG. 1A, the fulcrum shaft 2 that had been protruding toward the bracket 8a side has its left end surface aligned with the bracket 8a.
in the direction of arrow a until it almost coincides with the outer surface of. In this state, make a notch 1 in the bracket 8a.
0 (Figure 1B). Then, move the fulcrum shaft 2 protruding toward the bracket 8b in FIG. 1B until its left end surface contacts the inner end surface 5a of the bearing 5.
10, the assembly is completed as shown in FIG.

However, in the state shown in FIG. 1C, although the fulcrum shaft 2 does not move to the left, it may move to the right and the cassette lid 1 may come off. In order to prevent this, a stopper is provided adjacent to the right end surface of the fulcrum shaft 2, but due to the assembly described above, this stopper cannot be fixed in advance. After the assembly of the stopper 11 is completed, a part of the mechanical chassis is used as the stopper 11, or a base plate is separately fixed to the cabinet 3 to form the stopper 11. For this reason, when attaching and detaching the cassette cover, it is necessary to remove the mechanical chassis or the back cover of the cabinet 3 to attach and detach the stopper, which is very time-consuming. However, except for the stopper mentioned above, the cassette lid 1 of the type described above, which is attached and detached while moving the fulcrum shaft 2 in parallel, requires fewer parts and is relatively inexpensive, so it solves the above-mentioned problem of the stopper. The challenge was to do so.

Purpose of the invention The present invention was created in view of the above-mentioned circumstances, and is directed to a housing having a battery storage section provided inside the case and an opening for installing a battery into the battery storage section. A lid mounting device in which a rotatable lid is mounted via a fulcrum shaft inserted through the lid and a pair of bearings provided on the casing for supporting the fulcrum shaft, a first regulating portion that comes into contact with one end of the fulcrum shaft to restrict axial movement of one of the fulcrum shafts; and a second regulating portion that is disposed opposite to a side wall in the battery storage section and has the other end of the fulcrum shaft. and a second regulating part made of an elastic piece for abutting against and regulating the axial movement of the other fulcrum shaft; The lid mounting device is configured such that the lid body is supported between the batteries and the lid mounting device can release the restriction by the second restriction portion from the opening of the battery storage portion.

Therefore, the casing can be easily attached to and removed from the casing without removing the back side of the casing. Furthermore, once the lid is attached, it will not come off unexpectedly from the housing during use.

Summary of the invention In order to achieve the above object, the present invention provides a lid mounting device that rotatably mounts a lid to a housing using a single fulcrum shaft, with an elastic claw that holds one end of the fulcrum shaft. is provided in an openable and closable storage section for batteries, etc., which is mounted on the casing.

With the above configuration, it is possible to attach and detach the rotary cover without removing the back cover of the cabinet extensively.

Embodiment An embodiment in which the present invention is applied to a tape recorder cassette lid mounting device will be described below with reference to the drawings.

As shown in FIG. 3, the pair of brackets 8a and 8b are integrally formed on the cassette lid 1, and the cassette lid 1 supports the cabinet by a single fulcrum shaft 13 inserted through the brackets 8a and 8b. (Housing) It is rotatably attached to 14.
Both ends of the fulcrum shaft 13 are held by downward U-shaped bearings 5 and 6 as shown in FIG. 2A, and the middle is supported by an upward U-shaped groove 7 as shown in FIG. 2B. Retained. On the other hand, at a predetermined position on the upper plate 15 of the cabinet 14, an elastic pawl 16 serving as a stopper is provided to protrude downward and face a side wall inside a battery storage section 22, which will be described later. This elastic claw 16 is connected to the cabinet 14.
Although it is molded integrally with the upper plate 15, its connecting portion is separated from the upper plate 15 on three sides by U-shaped notches 17. Further, the tip of the elastic claw 16 has a tapered surface 18a as shown in FIG. 6A.
As shown in FIG. 6B, the claw 18 has a structure that can be easily bent in the direction of the arrow c due to the notch 17. Note that the code 19 is
This is an opening/closing lever that holds the cassette lid 1 in its opening/closing position by a biasing force.

On the back side of the tape recorder, below the fulcrum shaft 13 in FIG. 3, as shown in FIG. 4, a battery storage section 22 is provided in which two batteries 21 are stored in series. Approximately half of the portion 22 is configured to be openable and closable by a battery cover 23.
The recess of the battery storage portion 22 includes the elastic claw 16 and the fulcrum shaft 1 adjacent to the elastic claw 16.
The end portions of the batteries 3 and 3 are arranged so that they can be easily accessed when the battery 21 is removed. As shown in FIG. 4, an annular groove 25 is formed at the end of the fulcrum shaft 13 to facilitate gripping. In addition, the battery 21 in the battery storage section 22
As shown in FIG. 5, when the end is pushed in the direction of arrow d, the end falls into the recess 24 and tilts, making it very easy to remove the battery.

Next, the operation of attaching and detaching the cassette lid constructed as above will be explained with reference to FIGS. 6A to 7C.

To attach the cassette lid 1 to the cabinet 14, first, the annular groove 25 is placed on the bracket 8b side, and the fulcrum shaft 13 is inserted into the through holes of the brackets 8a and 8b. At this time, the fulcrum shaft 13 is inserted into the bracket 8b up to the outer surface of the bracket 8b, and in this state, while aligning the axis of the fulcrum shaft 13 with the center of the groove 7, the bracket 8b is inserted as shown in FIG. 7A. Insert into the notch 9 of the cabinet 14. When the fulcrum shaft 13 protruding toward the bracket 8a is moved in the direction of arrow a, the fulcrum shaft 13
is inserted into the bearing 6. When the fulcrum shaft 13 is further moved in the same direction in this manner, the end of the shaft that has passed through the bearing 6 comes to rest on the tapered surface 18a of the elastic pawl 16, as shown in FIG. 6A. When the shaft end on the bracket 8a side substantially coincides with the outer surface of the bracket 8a, the bracket 8a is then inserted into the notch 10 (FIG. 7B). In this way, the fulcrum shaft 13 enters the groove 7, and the end of the shaft on the side of the bracket 8b, which had been tilted obliquely, attempts to return to the horizontal position, and its elastic force causes the elastic pawl 16 to move in the direction of the arrow e. Press (Figure 6B).
Therefore, the elastic claw 16 bends in the direction of mark c, and
The end of the fulcrum shaft 13 is connected to the tapered surface 18a of the elastic claw 16.
move along. And the fulcrum shaft 13 and the elastic claw 1
6, it comes to rest at a point where the elastic force due to the deflection is balanced. Then, turn over the cabinet 14, push the shaft end of the fulcrum shaft 13 on the elastic claw 16 from the battery storage section 22 side, and push it in the direction of arrow b (6th B).
7B), the shaft end falls into the inside of the elastic pawl 16 and the elastic pawl 16 also returns to its original position (FIG. 6C). In this way, one end of the fulcrum shaft 13 is prevented from shifting in the axial direction by the inner end surface of the claw 18 of the elastic claw 16, and the other end is prevented from shifting in the axial direction by the inner end surface 5a of the bearing 5. 5 and 6, and the cassette lid 1
is rotatably attached to the cabinet 14 via the fulcrum shaft 13.

Next, in order to remove the cassette lid 1 assembled as described above from the cabinet 14, it is sufficient to perform the operation in the opposite direction to the above-mentioned assembly. That is, the battery storage section 2
2 and remove the battery 21. Then, grasp the annular groove 25 of the fulcrum shaft 13 with tweezers or the like, lift it against the elastic force and pull it toward the elastic claw 16, and place the end on the tapered surface 18a of the elastic claw 16. At this time, the fulcrum shaft 13 is pulled in until the other end surface substantially coincides with the outer surface of the bracket 8a. Then, the bracket 8a is pulled out from the notch 10, and the fulcrum shaft 1 protrudes toward the bracket 8b.
3 from the battery storage section 22 side to the bracket 8a.
Push it to the side. Then, pull out the pushed-out shaft end on the bracket 8a side and remove the bracket 8b.
When the bracket 8b is pulled out from the notch 9 when the side shaft end substantially coincides with the outer surface of the bracket 8b, the cassette lid 1 is removed from the cabinet 14.

In this way, the elastic pawl 16 integrated with the cabinet 14 is used to prevent one end of the fulcrum shaft 13 from slipping, and when the cassette lid 1 is attached or removed, the elastic pawl 16 deforms elastically to prevent the fulcrum shaft from shifting. Hold one end of 13. Therefore, there is no need to separately provide a stopper as in the conventional case. Moreover, since the elastic claw 16 is provided so as to look into the battery compartment 22, the cassette lid 1 can be operated from the battery housing compartment 22 side without removing the back cover of the cabinet 14, thereby allowing the fulcrum shaft 13 to be moved. It can be easily attached to and removed from the cabinet 14 through the connector.

Effects of the invention As explained above, according to the invention, the fulcrum shaft fitted into the bearing part of the housing is regulated from moving in the axial direction by the first and second regulating parts. ,
The lid attached to the casing does not accidentally come off from the casing during use.

Furthermore, the second regulating section is made of an elastic piece and is disposed inside the battery storage section having an opening.
The fulcrum shaft can be easily attached and detached from the opening. Therefore, the lid body can be easily attached to the housing via the fulcrum shaft and easily removed from the housing without having to remove the back cover of the housing extensively as in the conventional case. Therefore, according to the present invention, it is easy to replace a damaged lid, and unlike the conventional method, the lid can be attached in the final process of manufacturing, which reduces the occurrence of defective products due to scratches, dirt, etc., and improves production. This improves performance, reduces assembly man-hours, and lowers costs.

[Brief explanation of the drawing]

Figures 1A to 1C are conventional process diagrams showing how to attach the cassette lid, and Figures 2A and 2B are longitudinal sectional views taken along the center line of the fulcrum shaft, and Figures 2A and 2B are A-A and 2B in Figure 1C, respectively. A sectional view taken along the line B-B and FIGS. 3 to 7C show an embodiment in which the present invention is applied to a cassette lid of a tape recorder, and FIG. 3 is a perspective view of the tape recorder with the cassette lid opened. Figure 4 is an exploded perspective view of the battery compartment and battery cover, and Figure 5 is an exploded perspective view of the battery compartment and battery cover.
The figure is a side view of the battery compartment showing how to remove the battery, Figures 6A to 6C are perspective views seen from the battery compartment side showing the relationship between the elastic pawl and the fulcrum shaft in each assembly process, and 7A to 7C are views similar to FIGS. 1A to 1C showing each assembly process. In addition, in the symbols used in the drawings, 1...cassette lid (lid body), 5, 6... bearing, 5a... inner end surface (first regulating part), 13... fulcrum shaft, 14...
...cabinet (housing), 16...elastic claw (second
regulation part), 21...battery, 22...battery storage part,
It is.

Claims (1)

[Scope of Claim for Utility Model Registration] A cover body that is rotatable with respect to a casing that has a battery storage section provided inside the case and an opening for installing a battery in the battery storage section. In the lid mounting device, the lid is attached via a fulcrum shaft inserted through the fulcrum shaft and a pair of bearings provided on the casing for supporting the fulcrum shaft, and the lid body is attached to the fulcrum shaft by abutting one end of the fulcrum shaft. a first regulating part for regulating the axial movement of one of the fulcrum shafts; A second piece made of an elastic piece for regulating axial movement.
a regulating part, the fulcrum shaft is supported between the first regulating part and the second regulating part, and regulation by the second regulating part is controlled from the opening of the battery storage part. Lid mounting device that can be released.