JPS586520A - Cleaner for cassette tape player - Google Patents

Abstract

PURPOSE:To use the titled cleaner for a cassette tape player provided with a tape slack eliminating mechanism and an automatic reverse mechanism, by providing a detaining lever which is driven with a driving sprocket of the player and fixes a cleaner lever, in a case freely shakeably. CONSTITUTION:When a cassette tape player has a slack eliminating mechanism, since a driving sprocket is engaged with a cam member 25 and a detaining lever 61, the cam member 25 is subjected to a clockwise driving force, a fixed part 63 of the detaining lever 61 contacts with other end of a cleaner lever 35 to fix a cleaner lever 35 and the detaining lever 61, thus a driving sprocket is stopped, a head and a pinch roller are progressed, the cassette tape player is in the reproducing or recording state, the member 25 is turned with one driving sprocket and the head and the pinch roller are cleaned with cleaning members 42 and 45.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cleaner for a cassette tape player,
In particular, it relates to a device that cleans the head by reciprocating a cleaning member that cleans the head.

Generally, a cassette tape player basically has a configuration as shown in Figure 1. That is, main body (1) K
A recess (2) is formed as a cassette tape mounting part for mounting a cassette tape, and a pair of driving sprockets +3) (4) are disposed in this recess (2).
A magnetic head (51) is disposed at the center of the -edge of the magnetic head (51).

A k capstan (6) and a pinch roller (7) are provided on the negative side (right side in the figure) of this head (5).

The head (5) and the pinch roller (7) are provided so that they can move forward and backward with respect to the recess (2), and are inserted into the recess (2) when playing a cassette tape or when a bell sounds. The head (5) and pinch roller (7) are advanced toward the cassette tape, and in this state, the drive sprocket (3) on one side (on the right in the figure) and the capstan (
When the cassette tape (6) is rotated in the counterclockwise direction shown in the figure, the cassette tape is played or recorded from the K. Also, when rewinding the cassette tape, the head (5) is rotated from the cassette tape inserted in the recess (2). ) and the pinch roller (7) are retracted from the ridge, and in this state, the other drive sprocket (41 on the left in the figure) is rotated clockwise in the figure to unwind the force strip. There is.

Cleaning the head (5), capstan (6) and pinch roller (7) of such a power table player is essential to maintain good playback and sound conditions. Various types of cleaners have been used in the past, but they can be broadly classified into the following three types.

A cotton swab-shaped cleaner that can be impregnated with a cleaning solution.

(6) A cleaner in which a tape-shaped abrasive body is wound around a cassette tape reel instead of magnetic tape.

0 A cleaner in which a cleaning member that is driven by a drive sprocket of a cassette tape player and performs reciprocating motion is provided in a case that has approximately the same shape as a cassette tape.

However, in the above-mentioned type of cleaner, the operator holds the cleaner and scrubs the head (51, etc.), so for example, when the head (57, etc.) cannot be seen from the outside, such as in an automatic military cassette tape player, In addition, although the cleaner of the above method (6) does not have the drawbacks of the above method, the head (5) wears out with use. In addition, the cleaner of the above 1 type has the above (2) and
However, when used in a cassette tape player equipped with a tape slack removal mechanism or an auto-reverse mechanism, there are disadvantages as described below.

As a cleaner for the above 00 method, JP-A-54-42124
The explanation will be given using the one shown in the publication as an example.

As shown in Figures 2 and 8, this cleaner a is a hollow case α that has approximately the same shape as the case of a cassette tape, such as a compact cassette tape, that is, a cassette half.
It has υ. This case aυ is constructed by arranging two symmetrical box-shaped members rl'2) (13),
Similar to the cassette half, this box-shaped ring α3 has a small circular hole (lcJ(le) for the magnetic head (5), an opening αη for the capstan (6), and a hole for the capstan (6) for the K). Pore αI (19%
An opening clI (21) for the pinch roller (7) and a positioning hole @(c) for a positioning guide pin (not shown) provided in the cassette tape player are formed.

A cam member (toward) is supported in one circular hole a$ portion (on the right side in the figure) within the case αυ.

This cam member (c) is rotatably supported by the box-shaped member C13 (an annular ridge integrally formed on the inner surface of the circular hole 15 (15) (3e & C), similar to a cassette tape reel. At the same time, the center is formed into a hollow shape,
This hollow portion is provided with internal teeth that engage with drive sprockets +31 and +41. In addition, this cam member (c) has a disc-shaped cam part (to) eccentric with respect to the rotation center formed on the outer periphery 11, and the - side surface (to the spear 3) of this cam part (to).
A closed loop annular groove (lower surface in the figure) is provided eccentrically with respect to the center of rotation.

A cleaning lever (to) is supported approximately at the center of the case λαυ. This cleaning lever (to) is swingably supported by a cylindrical projection @ integrally formed on the inner surface of the box-shaped member r13 (13), and the bin C (71) provided at one end is connected to the cam member ( C) is engaged with the annular groove 4, and the other end is provided with a U-shaped bottle attachment part (to) via a curved part (to), and this attachment part OI is connected to the curved part (to). forward (downward in Figure 2) due to the elasticity of
The magnetic head (5) is placed at the opening (Iη) for the magnetic head (5) in a state where it is biased towards the magnetic head (5).
A pin hole is provided protrudingly on the upper and lower surfaces of the box-shaped member 03 (13), and this pin (4α) is secured to the arc-shaped protrusion formed integrally on the inner surface of the box-shaped member 03 (13) to attach the mounting portion (to). is the opening (
l? ) to prevent it from going outside the case aυ.

An elastic pad serving as a cleaning member is attached to the mounting portion (to) of the cleaning lever (to). This pad (4'lJ) is able to absorb liquid,
If necessary, the head (5) can be impregnated with a cleaning liquid for cleaning or dissolving adhering dust.

Furthermore, the m front portions (lower right side in Figure 2) K of the case aυ are also provided with elastic pads (C). This elastic pad (c) has a through hole for the capstan (6) K and an opening (2) for the pinch roller (7) K.
The above cleaning lever c! ! It is possible to impregnate the same 411 with the cleaning liquid as the elastic pad provided, and one end of it is connected to the above one (upper side in Figure 3).
It is held between the support plate protruding from the inner surface of the box-like member a3 and the front wall (lower surface in Figure 2) of the case αυ, and the other end is connected to the box-like member ti2.
A U-shaped support part (47
) (supported by 48).

Further, a leaf spring K (toward) is provided behind the elastic pad 4 (upper side in FIG. 1'F2). This leaf spring
The base of is the box-shaped member (upper part in Figure 8).
It is sandwiched between the support plate protruding from the inner surface of the case Qll and the corner of the front corner of the case Qll (lower right side in the JP2 figure), and its tip is curved in a semicircular shape, and the elastic pad (41 is in contact with.

Then, when using this cleaner (IG), insert the cleaner frame in the direction shown in the illustration (1) into the recess (2) K of the cassette tape player, and press the operating lever to release the cassette tape. When the player is in the playback or recording mode, the drive sprockets (3) (4) and capstan (6) are inserted into the circular holes Q!19 of the case αυ, respectively.
(Ie and one through hole (IIK), the head (5) and the pinch roller (7) respectively enter the opening rir and one opening (1) of the case value υ, thereby K (3) engages with the internal teeth @ of the cam member (C), the head (5) comes into contact with the elastic pad (42) of the cleaning lever (C), and also the capstan (6) and the pinch roller () ) comes into contact with the elastic/flexible part (c), and in this state one of the drive sprockets (3) and the capstan (6) rotate counterclockwise in the drawing.

Note that the other driving sprocket (4) is not driven and can freely rotate.

As a result, the cam member (c) rotates counterclockwise in the drawing, the cleaning lever (to) swings around the protrusion (to), and the elastic pad (6) in contact with the head (57K) moves to the head (57K). ) The head (5) is cleaned by reciprocating on the surface of the head (5), and the capstan (6) and pinch roller (7) also rotate while in contact with the elastic pad (c), so cleaning is performed. It will be done.

However, the above-mentioned operation occurs when the cassette tape player is not equipped with a tape slack removal mechanism or an auto-reverse mechanism, and is disadvantageous when it is equipped with one or both of these mechanisms.

In other words, the tape slack removal mechanism is to remove both drive sprockets +3+1 prior to tape playback or vowel.
4) in the opposite direction to rotate both reels in the winding direction, thereby applying a predetermined tension to the tape. In a cassette tape player equipped with this tape slack removal mechanism, If the cassette tape is inserted into the recess (2) K and the specified tension is not applied to the tape even if the operation lever is operated, that is, the tension is applied to the tape and both drive sprockets (31 ( Head (5) unless 41 is stopped
and the pinch roller (7) is designed to prevent it from advancing into the cassette tape.For this reason, the drive sprocket (7) that has entered the circular hole αeK of the other (left side in Figure 2) is
Since roller 4) rotates freely forever and does not stop, spatula F (5) and pinch roller (7) are attached to cleaner (11).
1 opening aη and one opening @ are not entered, only the capstan (6) is cleaned, and the head (5) and the pinch roller (7) are not cleaned.

In addition, the auto-reverse mechanism is equipped with a capstan (6) and a pinch roller (7) on both sides of the head (5).
The tape can be played back and recorded no matter which direction the tape is running in. Moreover, after playback or recording in one direction is completed, the tape running direction can be reversed and played back in the other direction! , 1 is designed to play vowels, and in a cassette tape player equipped with this auto-reverse mechanism, the cassette tape is placed in the recess (2).
) K, operate the operating lever, etc., and press the head (5) and the pinch roller (1) on one side.
7) To make a cassette tape, playback or recording in that direction, and playback in that direction is a certain percentage.
, 1 is when recording is finished and there is no tape on the reel that is not being driven, and the reel that is being driven is stopped.
The pinch roller (7) on one side automatically retreats, and the pinch roller (7) on the other side (not shown) moves forward, so that reproduction or vowels in the opposite direction are performed.

For this reason, in the above-mentioned cleaner A, depending on the insertion direction of the cleaner Ql, the driving sprocket (3) that is driven first enters the other circular hole (l@), and the cam member (c) moves on the delivery side. The drive sprocket (4) may engage with K, and in this case, the cam member (torque) will not rotate, so the head (5) will not be cleaned.
Further, the capstan (6) and the pinch roller (7) are not cleaned either, and only the capstan (not shown) on the opposite side to the driving direction is cleaned.

The present invention has been made in view of these points, and provides the above-mentioned mouth method that allows the head (5) to be cleaned even when the head (5) is not visible and does not cause the head (5) to wear out. The purpose of this cleaner is to enable use with cassette tape players equipped with tape slack removal mechanisms and auto-reverse mechanisms. a cam member which is rotatably supported and driven by one drive sprocket of the player; a cam member which is swingably supported within the case and has one end engaged with the cam member and the other end of which is connected to the player; a cleaning lever that faces the magnetic head and swings as the cam member rotates; a cleaning member provided at the other end of the cleaning lever; The cleaning lever is characterized by comprising a locking lever that is driven by a drive sprocket and fixes the cleaning lever.

Next, the configuration of the present invention will be specifically explained based on an embodiment shown in Figures t4 and 5.

In addition, in the explanation, parts similar to those of the conventional cleaner αQ shown in the above-mentioned figures 2 and jps will be given the same reference numerals and explanations will be omitted, and only the parts that are included in the present invention will be explained. do.

This cleaner is inside the case αυ [the other circular hole ae
It is equipped with a locking lever 6υ for fixing the cleaning lever (to).

Similar to the cam member (c), this locking lever 61) is rotatably supported by an annular ridge @ integrally formed on the inner surface of the circular hole tte of the box-shaped member ti. The center portion is formed hollow, and this hollow portion is provided with internal teeth that engage with the driving sprockets (3) and (4).

This locking lever 6υ has a cleaning lever (
A locking portion is integrally formed at a position substantially symmetrical to the fixing portion for the other end of (to) and the locking portion I.
As a stopper for 4, a cylindrical projection is integrally formed on the inner surface of the box-shaped member α and αJ.

In addition, as shown in Figure 4, the cleaning lever (to) bottle (
9) is located at the most eccentric part of the annular groove of the cam member (C), and the other end of the cleaning lever (to) is at the most forward (downward in the figure) K position, and when the other end of the cleaning lever (to) The angle (0) at which the end part and the fixed part of the locking lever Iυ come into contact is 90
It is set to be thicker than the degree.

When using this cleaner, it is used in the same way as the conventional cleaner (II), but if the cassette tape player is equipped with a tape slack removal mechanism, the drive sprocket (31143 is the cam member (c), When both drive sprockets +3) (4) are driven in opposite directions before the head (53) and pinch roller (7) advance to enter the playback or chime state in order to engage the locking levers, The force member (a) is counterclockwise.

The locking lever receives a clockwise driving force.

Therefore, as shown in Figure 4, the fixed part of the locking lever 6υ comes into contact with the other end of the cleaning lever (G) to fix the cleaning lever (To), and the locking lever 6υ itself is also cleaned. When it is fixed by the other end of the lever (to), it becomes K.

Therefore, the cam member (c) and the locking lever 11) cannot rotate, and both drive sprockets (31 (4)
) stops, and as a result, the head (5) and pinch roller (7) move forward, and the drive of the other drive sprocket (4) that is engaged with the locking lever ti1 is released so that it can rotate freely. K, the cassette tape player enters the playback state or the chime state, the cam member (c) is rotated by one drive sprocket (3) K, and the head (51 and pinch roller (7) are moved to the capstan (
6) will be cleaned along with the

Note that when the locking lever 11) is receiving the driving force, the angle (11) is set larger than 90 degrees.

The locking lever 1) will not rotate clockwise from the state shown in Figure 4, and the cleaning lever (to) can be securely fixed, and the driving force of the locking lever 11) will be released. Then, the locking lever 6υ is momentarily rotated counterclockwise by the swinging of the cleaning lever (to), and
and the locking lever I are completely unrelated.

In addition, if the cassette tape player is equipped with an auto-reverse mechanism, depending on the direction in which the cleaner is inserted, one of the drive sprockets (3
) may engage the locking lever 6111, and the other driving sprocket (4) on the undriven delivery side may engage the cam member (c) K. In this case, the locking lever 6υ is fixed in the same way as above. Since the part contacts the other end of the cleaning lever (to), the locking lever cannot rotate and the driving sprocket (3) is stopped.

Therefore, the auto-reverse mechanism operates and automatically moves one pinch roller (7) backward, and the other pinch roller advances, and at the same time, one drive sprocket (3) stops driving and is freed. At the same time, the other driving sprocket (4) is driven, and the force tape player enters the playing or chiming state in the opposite direction, causing the cam member (c) to rotate to the other driving sprocket (4). 4) Rotate with K and head (5)
is cleaned, and the other pinch roller (not shown) is also cleaned together with the capstan.

In the cleaner t4, elastic pads 4 may be provided for one of the through holes (II and K as well as the opening), and also for the other through hole a and the opening υ.

As described above, according to the present invention, when cleaning the head of a cassette tape player, it is possible to clean the head etc. even when the head etc. is in a position where it cannot be seen visually, and also prevents the head from being worn out. Furthermore, the cleaning lever engaged with the cam member rotated by one drive sprocket of the cassette tape player is fixed by a locking lever driven by the other drive sprocket of the cassette tape player. Even if the cassette tape player is equipped with a tape slack removal mechanism or an auto-reverse mechanism, the head etc. can be cleaned reliably.

[Brief explanation of drawings]

FIG. 1 is a plan view of a cassette tape player, FIG.
Figure 4 is a partially cutaway plan view of an embodiment of the cleaner for a cassette tape player of the present invention, and Figure 5 is a sectional view taken along the line v-v in Figure 4. (2) - recess as cassette tape mounting area, (3)
(4)...Drive sprocket, (5J...Magnetic head,
αυ... Case, (c)... Cam member, (to) - e Cleaning 1 < -1 (4 - Elastic pad as cleaning member, ■
・・Cleaner, 6υ・・Latching lever.

Claims (1)

[Claims] (11) A case that can be attached to the cassette tape mounting section of a cassette tape player, a cam member rotatably supported within the case and driven by one drive sprocket of the player, and a cam member that is rotatably supported within the case. a cleaning lever that is supported and has one end engaged with the cam member and the other end facing the magnetic head of the player and swings as the cam member rotates; and a cleaning lever provided at the other end of the cleaning lever. A cleaning member for a cassette tape player, which is provided with a locking lever that is swingably supported in the case and is driven by the other drive sprocket of the player to fix the cleaning lever. .