JPS5841378Y2 - Rotating support device - Google Patents

Description

[Detailed description of the invention] The present invention provides a first member having a first fitting portion and a second member having a second fitting portion that fits with the first fitting portion. The present invention relates to a rotation support device that is rotatably supported.

Conventionally, when supporting a rotatable lever on a board, for example for a tape recorder, first the support shaft is attached to the board by crimping, and then the lever is attached to this support shaft.
Finally, for example, an E IJ ring is attached to prevent the lever from falling off.

However, this method requires a large number of manufacturing steps,
Furthermore, the lever has the disadvantage that it is troublesome to attach and detach.

The present invention has been made with the aim of correcting such problems, and includes a first member (for example, the fulcrum portion 22 in the embodiment described later) having a first fitting portion (for example, the fulcrum portion 22 in the embodiment described later). A second fitting portion (for example, a metal plate 1 in an embodiment to be described later) is integrally formed with a second member (for example, a metal plate 1 in an embodiment described later) that is to be rotationally supported relative to a rotating lever 21 in an embodiment. For example, this second
A pull-out prevention part that can be elastically bent with respect to the fitting part is attached, and a locking claw is provided at the tip of the pull-out prevention part to bend the pull-out prevention part and prevent the second fitting. The first fitting portion is fitted into the mating portion, and after this fitting, the locking pawl is engaged with the first fitting portion protruding from the first fitting portion due to the elastic restoring force of the removal prevention portion. stopping and preventing the disengagement of the fitting, thereby making it possible to rotationally support the second member relative to the first member, and bending the disconnection prevention portion. This allows the fitting to be released from the fitting.

With this configuration, the rotating member can be easily attached and removed, and the number of manufacturing steps can be reduced.

An embodiment in which the present invention is applied to a rotary support device for rotatably supporting a rotary lever in a tape recorder will be described below with reference to the drawings.

First, referring to FIG. 1, we will describe the resin molding of the rotation support device.
be held in between.

This metal plate 1 has five through holes 4, 5, 6, 7, 8.
are formed in advance, and a pair of prismatic protrusions 9 and 10 are formed protruding from the mold 3.

The metal plate 1 is placed between the molds 2 and 3 with these protrusions 9 and 10 fitted into the through holes 5 and 7, respectively.

In this state, a molten polymer compound such as Duracon (trade name, polyether resin, copolymer of formaldehyde and ethylene oxide) is injected into the rotating support device 11 as shown in FIG. are integrally molded in resin.

The rotation support device 11 is composed of a shuttle-shaped support shaft 12, a pair of removal prevention members 13 disposed on both sides of the shaft, and a base portion 14 supporting these members.

Note: The support shaft 12 does not need to be a solid columnar shaft, and may be a hollow shaft such as a cylindrical shaft if necessary.

The removal prevention member 13 is integrally connected with a locking pawl 15 for preventing removal, which protrudes toward the support shaft 12 at its upper end.

Further, a holding piece 16°17.1 is provided at the bottom of the base portion 14.
8 are connected together.

These holding pieces 16, 17, 18 pass through the through holes 4°6.8 of the metal plate 1 and extend to the back surface of the metal plate 1, thereby holding each part of the rotation support device 11 in place with the metal. It is connected to plate 1.

Further, a pair of through holes 19 and 20 are formed in the base portion 14 of this rotation support device 11.

These through holes 19 and 20 are formed by punching out the pair of prismatic protrusions 9 and 10 of the mold 3, so that the rising portion of the punch-out prevention member 13 is made relatively thin. Therefore, it is easy to bend due to elastic deformation.

Next, the state in which the rotation lever 21 is supported by the rotation support device 11 will be explained with reference to FIGS. 3 and 4. In FIG.
is bent by elastic deformation, and then the through hole 23 of the fulcrum portion 22 of the rotary lever 21 is fitted into the support shaft 12.

As a result, the lever 21 is rotatably supported by the support shaft 12.

Moreover, the IL member 13 to prevent the removal is returned to its original state by the restoring force, and the locking pawl 15 of this member 13 engages with the upper end of the fulcrum portion 22 of the lever 21 and projects upward from the fulcrum portion 22. As a result, the lever 21 is prevented from moving upward in the axial direction of the support shaft 12.

That is, the locking pawl 15 prevents the lever 21 from coming off and falling off the support shaft 12, and also holds the lever 21 in a rotatable state relative to the support shaft 12.

Although the present invention has been described above with reference to embodiments, the present invention is not limited to the above embodiments, and various modifications can be made based on the technical idea of the present invention.

For example, in the above embodiment, the present invention is applied to a tape recorder, but the present invention can be applied to various other electronic devices and mechanical devices.

In addition, in the above embodiment, the lever 21 is provided with one row of members 13 to prevent the lever 21 from being removed, but the number of the members 13 which prevent the lever 21 from being removed does not necessarily have to be one pair, and may be one.
Alternatively, there may be three or more.

Further, the mounting position of the removal prevention member may be changed to any position near the removal prevention member, and in this case, it is also possible to freely control or change the rotation angle of the lever 21. .

As is clear from the above, according to the present invention, it is easy to manufacture the rotation support device, and the rotation member can be installed and removed simply by bending the removal prevention portion through elastic deformation. This greatly simplifies these tasks and improves serviceability.

[Brief explanation of drawings]

The drawings show an embodiment in which the present invention is applied to a rotary support device in which a rotary lever is rotatably supported by a button on a tape recorder, and FIG. 1 shows this rotary support device molded from resin. Fig. 2 is an exploded perspective view of the rotation support device, Fig. 3 is a plan view of the same, and Fig. 4 is a cross-sectional view of the main parts joint showing the state.
It is a sectional view taken along the line ■ to ■. In the symbols used in button drawings, 1 is a metal plate (
12 is a support shaft (second fitting part), 13 is a removal prevention member (removal prevention part), 15 is a locking claw for preventing removal,
21 is a rotating lever (first member), and 22 is a fulcrum portion (first fitting portion).

Claims (1)

[Scope of utility model registration request] A second fitting part formed integrally with a second member that is to be rotationally supported relative to a first member having a first fitting part. A pull-out prevention part that can be elastically deflected is provided, and a locking claw is provided at the tip of the pull-out prevention part, and the pull-out prevention part is bent and the first fitting part is attached to the second fitting part. After fitting, the locking pawl protrudes from the first fitting part and locks the first fitting part by the elastic restoring force of the removal prevention part. This prevents the second member from being uncoupled from the fitting, thereby allowing the second member to be rotationally supported relative to the first member, and also prevents the fitting from occurring by bending the disconnection prevention portion. A rotation support device characterized in that it is removable.