JPS59151600A - Damper unit and its manufacture - Google Patents

Abstract

PURPOSE:To simplify the assembly of a damper unit by pressing other end of a rotating body having a gear on one end is provided while a viscous material is filled in a cylindrical case with a bottom. CONSTITUTION:In the damper unit 26 used for the soft ejection mechanism of cassette tape recorder or the like, the rotating body 29 where a damping gear 27 is formed to the tip and a damping section 30 is formed to the base is assembled in the cylindrical case 31 with the bottom. After a viscous material such as grease is filled uniformly in the case 31 for a prescribed amount, the damping section 30 of the rotating body 29 is pressed by using a rotary pressing device or the like into the case 31 until the viscous body overflows from the case 31.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a damper unit for controlling the opening and closing of lids of electronic devices including audio devices such as LD force set tape recorders.

[Technical background of the invention]

As is well known, cassette tape recorders and the like are equipped with a so-called soft eject mechanism that softly opens and closes the lid of a cassette holder, etc. for the cassette storage section in which the cassette tape is stored in order to play back the tape and play the sound. It is known that there are In such a soft eject mechanism, the soft opening/closing of the lid is performed using a damper knit mechanism as shown in Figure 1.
This is done using That is, 11 is a rotating body having a gear 12 for driving the opening and closing of the lid at one end and a regulating portion 13 for regulating rotational force at the other end. And this rotating body 1
1 is a first and second case 1 in which the shade regulating portion 13 is substantially concave;
4. In 15, for example, a viscous substance 1 such as grease shown by a dashed line
6, the recess 14, 1 of the first pump 2 is inserted.
- 5 were welded together by high frequency welding or the like, and were rotatably supported by the first and 29th cases 14 and 15.

[Problems with background technology]

However, when manufacturing the da/noda unit LJLVc configured as described above, large-scale equipment such as a high-frequency welding machine is required, making the work extremely complicated and expensive. Ta.

In addition, in the above configuration, the regulating portion 13 of the rotating body 1 is connected to the viscous body 16 for the pair of first and second cases 14.15.
The above $1 and the second case 14 are attached together with the
．． 15 were combined and welded in a sealed manner. For this reason, the viscous material 16 is not constant during manufacture of the "Fill/Per Unit Process" and there is a high probability of producing defective products, and there is also a risk of variations in performance.

[Purpose of the invention]

This invention was made in view of the above circumstances, and an object of the present invention is to provide an extremely good dunnage unit that has a simple structure, simplifies assembly work, and improves performance, and a method for manufacturing the same. purpose.

[Summary of the invention]

In other words, in this invention, a viscous substance is filled in a cylindrical case with a bottom, and the other end of a rotating body having a gear provided at one end is rotatably press-fitted, and the viscous substance is filled into the case. The feature is that the liquid is ejected overflowing from the opening.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings. That is, in FIG. 2, 20 is the 4th channel of the n-side of the cassette tape recorder, and this front panel 2
0 is provided with a substantially concave cassette storage section 21. A pair of reel shafts 23 (only one shown in the figure) for running the tape connected to the tape recorder mechanism section 22 are protruded from the cassette storage section 2, and a cassette holder for attaching the E-cassette tape to the lid body. 24 is provided so as to be able to be freely closed in the directions of arrows (A) and (B) with a rotating shaft 24 interposed therebetween. This cassette holder 24 is provided with a generally fan-shaped gear 25 for opening/closing drive, and this gear 25 is connected to a braking gear 27 of the da/took unit L1 disposed at one end of the cassette storage section 21. The teeth are aligned.

Further, the cassette holder 24 has a locking portion 242 formed at one end thereof.

The above-mentioned cassette holder 24 is attached to this lock 11fsx4z.
In the closed state, a locking member 28 that is linked to an ejector (not shown) is locked, and the locking portion 242 is unlocked in conjunction with the operation of the cassette. At this time, the cassette holder 24 is rotated by its own weight in the direction of arrow (4) to open the open state, but the rotational force is regulated by the braking force of the men unit 260, so that the so-called soft It is something that is ejected.

Here, the arm 22, 1g which performs the soft ejection of the cassette holder 24 as described above will be explained. In FIG. 3, 29 is a rotary body for braking. This rotating body 29 has the above-mentioned braking gear 2 at its tip.
7 force is formed, and a brake part 30 is formed at the proximal end thereof.

This brake part 30 is attached to a bottomed cylindrical case 31 in a process as shown in FIG. 4(1)(b).

That is, first, a predetermined amount of a viscous substance 32 such as grease is evenly filled into the case 31 using a coating gun 33 in a rotary manner. The regulating portion 30 of the rotating body 29 is inserted into the case 31 using a rotary press-fitting machine 34, for example, until the viscous substance 32 fills the case 31 and is injected overflowing from the opening. Press-fitted. Here, the rotating body 29 is rotatably supported with its regulating portion 30 being separated from the case 3 by the force of the viscous body 32 . The Danno's arm unit L1, which has the rotating body 29 attached to the case 31 as described above, is configured to wipe off the injection part 321 of the sticky substance 32 ejected from the opening of the skeleton case 31 so as not to get in the way. There is.

In this manner, in the above Dan i4-Unit L, when the rotating body 29 is attached to the case 31, it is configured to be rotatably press-fitted together with the viscous body 32. Therefore, the Danno unit 26 does not require a manufacturing process that requires large-scale equipment such as high-frequency welding, and the process is extremely simple, and the amount of viscous material 32 can always be kept constant, which improves performance. It is also possible to obtain a uniform and high-performance product.

It goes without saying that the present invention is not limited to the embodiments described above, and that various modifications can be made without departing from the gist of the invention.

〔Effect of the invention〕

As described above, according to the present invention, the structure is simple, the assembly work is simplified, and the performance is improved.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing a disassembly and storage device showing a conventional D//4'-3-knit, and FIG. 3 is an exploded perspective view showing a DAN unit and its manufacturing method according to an embodiment of the present invention. , 4(a) and 4(b) are sectional views showing the manufacturing process of FIG. 3, respectively. 20...Front panel, 21...Cassette storage section, 2
2... Tape recorder mechanism section, 23-... Reel shaft,
24--Cassette holder, 25--Gear, 26-
... Da 74-unit, 21 ... Gear, 28 φ Book member, 29 ... Rotating body %30 ... Regulation part, 31
... Case, 32 ... Viscous, 33 ... Application gun,
34...Rotary press-fitting machine. Applicant's agent Patent attorney Takehiko Suzue 1 Figure (b)

Claims (2)

[Claims] (1) The other end of a rotating body having a gear at one end is press-fitted together with a viscous material into a cylindrical case with a bottom, and the viscous material is injected into the opening of the case. It is characterized by (!:t4/y) unit. (2) After filling the case with the viscous substance, the rotating body is rotatably press-fitted into the case, and the viscous substance is injected from the opening of the case so as to be 15" wide. Manufacturing method of damper unit.