JPH07312005A - Loading device of tape recorder - Google Patents

Abstract

PURPOSE: To facilitate fixing operation, and to reduce a unit cost and improve operating efficiency by pivoting a loading gear and a connecting gear to a main chassis by outserting respectively. CONSTITUTION: A connecting gear 170 and a pair of loading gears 120, 120' are fixed and installed to a main chassis 100 by outserting articles respectively, and engaged with a relay gear 180 supported to the upper sections of the gears 120, 120' in a coaxial manner. A reinforcing plate 190 limiting the mutual places of the gears 120, 120' and the gear 170 is fastened and mounted on the shafts of the gears 120, 120' and the gear 170. According to the constitution, force for rotating the gears 120, 120' is transmitted through a connecting plate 140, a connecting gear 150, racks 161, 162 for a main connecting plate 160, and the gears 170 and 180. Consequently, the application of compulsory force to one gear 120 is prevented while fixing operation is facilitated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tape recorder, and more particularly, to a loading device for causing a tape to travel in close contact with the outer peripheral surface of a head drum.

FIG. 1 schematically shows a loading device of a general tape recorder.

[0003]

2. Description of the Related Art A head drum 1 is mounted on a main chassis 10.
1 is fixedly provided, and inclined long holes 12 having a predetermined length are formed on both sides adjacent to the head drum 11. A guide roller assembly 1 to be described later is provided at the end of the inclined elongated hole 12.
A buoy stopper 14 is provided on which the 3 is tightly seated. A pair of loading gears 20 and 20 'are rotatably supported on the lower part of the main chassis 10 in front of the head drum 11 such that the teeth are meshed with each other.
On the other hand, on the main chassis 10 described above, a cam gear 30 having cam grooves 31 and 32 of a predetermined shape formed on the upper surface thereof is rotatably provided. The cam groove 31 of the cam gear 30 has the loading gear 20 at one end thereof. , 20 ', a guide protrusion (not shown) provided at the other end of a rack gear member 40 in which a rack 41 that meshes with the loading gear 20 is formed. Therefore, the rack gear member 40 is slidingly transferred by the rotation of the cam gear 30, and the pair of loading gears 20 and 20 'whose teeth are meshed with the rack 41 are rotated in different directions so that the rack gear member 40 is connected to the loading gears 20 and 20'. The loading lever 50 is slid and transferred along the slender elongated hole 12. A rack gear 45 is provided in the cam groove 32.
One end of the rack member 44 in which is formed is slidably coupled, and the plate-shaped member 60 can be moved left and right.

However, in such a conventional tape recorder loading device, the rack gear member 4 is used.
When the rotating shaft 21 of the loading gear 20 to which a force is directly transmitted (received) from 0 is overloaded, the rotating shaft 21 may be deformed. This is because the force from the rack gear member 40 is directly transmitted to the loading gear 20.

Due to such a problem, conventionally, the main chassis 1 is made by using the rotating shaft 21 of any one of the loading gears 20 whose teeth mesh with the rack gear member 40 as a metal material.
The above-mentioned problem was solved by riveting and fixed installation on the 0. However, in riveting the rotary shaft 21 of the metal material and fixedly installing it on the main chassis 10 as described above, the problems listed below are listed. Is inherent.

First, the unit price is increased by using the rotating shaft 21 made of a metal material.

Secondly, since the riveting work is separately required to fix the metallic rotary shaft 21 on the main chassis 10, the work efficiency is lowered due to the increase in the number of steps.

[0008]

SUMMARY OF THE INVENTION The present invention was devised to solve the above-mentioned conventional problems, and the rotating shaft of the loading gear can be directly fixed to the main chassis by an outsert. It is an object of the present invention to provide a tape recorder loading device capable of reducing the unit price and improving the work efficiency.

[0009]

In order to achieve such an object, the present invention provides a guide elongated hole formed around a head drum installed on a main chassis along a guide elongated hole.
A loading device for a tape recorder including a pair of loading gears for moving a loading lever,
A cam gear rotatably installed on the main chassis by a driving means and having a cam groove of a predetermined shape formed on its upper surface, and a first rack having a predetermined length formed at one end thereof and inserted into the cam groove of the cam gear at the other end thereof. And a first connecting gear that is rotated by the rotation of the cam gear, the first rack of the connecting plate meshes with the first rack, and the first coupling gear rotates at one end thereof. A main connecting plate which is provided with a matching second rack and is provided with a third rack at the other end and is moved left and right along the lower surface of the main chassis, and the third rack of the main connecting plate meshes with teeth to rotate. The second connecting gear includes a relay gear that is coaxially supported by one of the pair of loading gears and that rotates by meshing teeth with the second connecting gear. Loading gear and the second connecting gear is characterized in that it is axially supported on the main chassis by each outsert.

A preferred feature of the present invention is that it further comprises a reinforcing plate which is fixed on the shafts of the pair of loading gears and the second connecting gear and limits the positions of the reinforcing plates.

According to the present invention, since the rotating shafts of the pair of loading gears and the second connecting gear are fixedly installed on the main chassis by the outsert member, it is possible to reduce the unit price and the working man-hours. .

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of a loading device for a tape recorder according to the present invention will now be described in detail with reference to the accompanying drawings.

FIG. 2 is a schematic plan view of a loading device for a tape recorder according to the present invention, and FIG. 3 is an enlarged view of an essential part.

As shown in the figure, the loading device of the tape recorder according to the present invention comprises a main chassis 100.
A guide elongated hole 110 is formed around the head drum 105. A pair of loading gears 120 and 120 'for moving the articulated loading lever 121 are provided along the guide elongated hole 110.

On the other hand, the main chassis 100 has a cam gear 13 rotatably installed by a driving means (not shown) and having a cam groove 131 of a predetermined shape formed on the upper surface thereof.
0 is provided. The cam groove 131 of the cam gear 130 has a guide projection 142 formed at the other end of a connecting plate 140 having a first rack 141 formed at a predetermined length at one end thereof. Therefore, the connecting plate 140 is slidingly transferred by the rotation of the cam gear 130. Further, on the main chassis 100, a first connecting gear 150 whose teeth mesh with the first rack 141 of the connecting plate 140 described above is rotatably installed. On the other hand, the main chassis 100
A main connecting plate 160 is installed on the lower surface of the main chassis 100 so as to be slidable in the longitudinal direction.
A second rack 161 is formed at one end of the main connecting plate 160 so as to mesh with the first connecting gear 150. A third rack 162 having a predetermined length is formed at the other end facing the second rack 161. Further, in the main chassis 100, that is, in a position adjacent to the third rack 162, a second connecting gear 170 that is rotated by meshing teeth with the third rack 162 is arranged. Pair of loading gears 120, 12
The teeth mesh with the relay gear 180 coaxially supported on the upper part of 0 '.

At this time, the above-mentioned second connecting gear 170 and the pair of loading gears 120 and 120 'are fixedly installed on the main chassis 100 by the outserts which are the features of the present invention.

At this time, the pair of loading gears 120,
A reinforcing plate 190 is fixedly installed on the shafts of 120 'and the second connecting gear 170 to limit the mutual position.

According to the tape recorder loading apparatus of the present invention thus constructed, the force for rotating the loading gears 120 and 120 'is applied to the cam gear 1.
30 to a plurality of stages, that is, the connecting plate 140, the first connecting gear 150, and the second and third racks 16 of the main connecting plate 160.
1, 162, the second connecting gear 170, and the relay gear 180
By being transmitted through, it is possible to prevent an unreasonable force from being applied to one of the loading gears 120.
Also, a pair of loading gears 120, 120 'and a second
Since the rotating shafts 121, 121 ′, 171 of the connecting gear 170 are fixedly installed on the main chassis 100 by an outsert object, there is an advantage that the fixing work becomes very easy.

On the other hand, a pair of loading gears 120, 1
A reinforcing plate 190 for interconnecting the movements of the second connecting gear 170 and the second connecting gear 170 is fixedly installed on the shaft, and the positional relationship between them is surely maintained, so that the loading lever 121 can be smoothly transferred. Is.

[0020]

As described above, according to the loading device of the tape recorder of the present invention, the pair of loading gears and the rotating shafts of the connecting gears for rotating them are fixedly installed on the main chassis by the outsert. Therefore, there is an advantage that the fixing work is very easy, and in particular, there is an advantage that the unit price can be reduced as compared with the case where the conventional rotary shaft of a metal material is used.

[Brief description of drawings]

FIG. 1 is a schematic plan view illustrating a loading device of a conventional tape recorder.

FIG. 2 is a schematic plan view illustrating a loading device of the tape recorder according to the present invention.

FIG. 3 is an enlarged cross-sectional view of an essential part of FIG.

[Explanation of symbols]

 10 Main Chassis 11 Head Drum 12 Inclined Long Hole 13 Guide Roller Assembly 14 Buoy Stopper 20, 20 'Loading Gear 21 Rotating Shaft 30 Cam Gear 31, 32 Cam Groove 40 Rack Gear Member 41 Rack 44 Rack Member 45 Rack Gear 50 Articulating Loading Lever 60 Plate-shaped member 100 Main chassis 105 Head drum 110 Inclined elongated holes 120, 120 'Loading gear 121 Articulating loading lever 130 Cam gear 131 Cam groove 140 Connecting plate 141 First rack 141 142 Guide protrusion 150 First connecting gear 160 Main connecting plate 161 Second rack 162 Third rack 170 Second connecting gear 180 Relay gear 190 Reinforcing plate

Claims (2)

[Claims] 1. A loading device for a tape recorder including a pair of loading gears for moving a loading lever along a long guide hole formed around a head drum provided on a main chassis, wherein the main chassis includes: A cam gear rotatably provided by a driving means and having a cam groove of a predetermined shape formed on its upper surface, and a guide in which a first rack is formed with a predetermined length at one end and is inserted into the cam groove of the cam gear at the other end. A connecting plate provided with a protrusion and slidingly transferred by rotation of the cam gear, a first connecting gear that rotates by meshing teeth with a first rack of the connecting plate, and a first connecting gear and teeth meshing at one end thereof. A second rack is provided, and a third rack is provided at the other end of the second rack, and the third rack is transferred to the left and right along the lower surface of the main chassis. Connection plate, a second connection gear that rotates by meshing teeth with the third rack of the main connection plate, and a second connection gear that is supported coaxially with one of the pair of loading gears. A loading device for a tape recorder, comprising: a relay gear that rotates in mesh with teeth, wherein the pair of loading gears and a second connecting gear are axially supported by a main chassis by an outsert. 2. The tape according to claim 1, further comprising a reinforcing plate fixed on the shafts of the pair of loading gears and the second connecting gear to limit the mutual positions. Recorder loading device.