CN1023161C

CN1023161C - Flexible flat cable for connecting head of automatic reverse type recorder

Info

Publication number: CN1023161C
Application number: CN 88108047
Authority: CN
Inventors: 城户国男
Original assignee: Tanashin Denki Co Ltd
Current assignee: Tanashin Denki Co Ltd
Priority date: 1987-12-02
Filing date: 1988-11-22
Publication date: 1993-12-15
Anticipated expiration: 2003-11-22
Also published as: JPH0542574Y2; GB2212971A; GB8809101D0; GB2212971B; HK134493A; JPH0188420U; CN1043033A; CN2054194U

Abstract

A magnetic head connecting flexible flat cable for a tape recorder of the automatic reversing type (11) is connected between the magnetic head (6) and an amplifier circuit (12) for driving the magnetic head (6) and has, adjacent a head side connecting section (13) thereof at which it is connected to a terminal (7) of the magnetic head (6), a curved section (16) which is curved in such a manner as to extend substantially in an arc around the axis of turning motion of the magnetic head (6). When the magnetic head (6) is turned over, the curved section (16) of the cable (11) is operated to wrap around or unwrap from the head holder (3) (Fig 1,2) so that the turning force is absorbed by the curved section (16) and hence transmitted to neither of the connecting portions (13,14) of the cable (11).

Description

Flexible flat cable for connecting head of automatic reverse type recorder

This case relates to and connects the flexible flat cable that head of automatic reverse type recorder is used between rotary type magnetic head and the amplifying circuit.

The automatic reverse type recorder that has is the commutation along with the tape running direction, 180 ° of magnetic head counter-rotatings, and the magnetic head of this tape recorder in the past and the form of the composition of the syndeton between the amplifying circuit are as shown in Figure 4.Be that magnetic head mounting panel a is provided with pedestal b, magnetic head retainer c is supported on the pedestal b pivotally, keeps fixing magnetic head d on the body c at magnetic head, and the end of the thin wire g that insulation vinyl f is being coated is fixed on the terminal e of magnetic head d in modes such as solders.

The terminal e of said head d under the situation of dual track magnetic head, has 4 signal terminals and serves as the shield terminal of magnetic head main body ground wire, totally 5.For preventing distribution mistake, the color of insulation vinyl f is had nothing in common with each other from each lead g of these terminals e.And make these use the other end of many lead g of insulation vinyl coating, by keep the set lead reach through hole h of the centre of gyration of body c along said head, be drawn out to the outside that keeps body c with rightabout this magnetic head of magnetic head d, be fixed on the amplifying circuit i with the other end of modes such as solder each lead g, whereby, will couple together between magnetic head d and the amplifying circuit i.

In above-mentioned magnetic head syndeton in the past, the color of the insulation vinyl f that is coating each lead g is had nothing in common with each other, therefore, structure and wiring operation complexity.

In addition, because the intersection j of solder position and lead is the thinnest, along with the revolution of magnetic head d and the advance and retreat action of magnetic head mounting panel a, therefore lead g can break repeatedly by bending.For preventing this class lead g at the solder partial disconnection, must be with the end of lead g with insulation vinyl f, fix near solder with adhesive k etc., so structure and wiring operation complexity more.

In addition, lead g is that 5 bundles get up to pass the set lead reach through hole h of the centre of gyration that keeps body c along magnetic head, the revolution that keeps body c for magnetic head, no matter both forward and reverse directions, all play blanketing, particularly heal when low temperature, this tendency more is serious, so the turning power of the reversing device of magnetic head d (figure is omitted) must strengthen.Have again, strengthen the diameter of lead reach through hole h, spatially have any problem, therefore can not replace many lead g and pass the printed circuit board (PCB) of a flexibility.

This case is to propose in view of the above fact, therefore its objective is: structure and wiring operation are simplified; Eliminate the broken string accident at solder position; The flexible flat cable that provides a kind of connection head of automatic reverse type recorder that does not hinder magnetic head to keep the body counter-rotating to use.

For addressing the above problem, the application provides a kind of like this flexible flat cable that head of automatic reverse type recorder is used that connects, promptly along with the commutation of tape running direction, between the magnetic head and amplifying circuit that with axis are 180 ° of center counter-rotatings perpendicular to the contact with tape face, connect being characterized as of flexible flat cable that head of automatic reverse type recorder uses: with head side connecting portion that the terminal of aforementioned magnetic head is connected near, have one to bend to around the reverse sweep of central shaft of aforementioned magnetic head.

The part of the flat cable that is connected between 180 ° magnetic head and the amplifying circuit of reversing along with the commutation of tape running direction surrounds the gyroaxis of magnetic head retainer, and whereby, magnetic head keeps the counter-rotating action of body smooth.

Fig. 1 adopts the outward appearance axonometric drawing of the state that the flexible flat cable of this case connects;

Fig. 2 is the cutaway view of the II-II line along Fig. 1;

Fig. 3 is the decomposition axonometric drawing of the flexible flat cable part between magnetic head and the amplifying circuit;

Fig. 4 be in the past magnetic head and the johning knot composition between the amplifying circuit, be cutaway view with Fig. 2 equal state.

Each number in the figure representative;

3 ... the magnetic head retainer,

6 ... magnetic head

6a ... the contact with tape face

7 ... terminal

11 ... flexible flat cable

12 ... amplifying circuit,

13 ... the magnetic head coupling part

16 ... sweep.

Followingly one embodiment of the present of invention are described according to Fig. 1～Fig. 3.Fig. 1 is between magnetic head and amplifying circuit, the top stravismus shaft side figure of the state that the flexible flat cable of use this case connects, Fig. 2 is the cutaway view of the II-II line along Fig. 1, and Fig. 3 is that the stravismus axle of magnetic head, amplifying circuit and flexible flat cable part is surveyed detail drawing.

1 is the magnetic head mounting panel among each figure, its be provided with the cross section for] pedestal 2 of shape, magnetic head keeps body 3 can remain on freely to rotate on this pedestal 2.As shown in Figure 2, this magnetic head keeps body 3 approximately to be risen by the middle part along its axle, and a side is a major diameter part 4, and opposite side is a small diameter portion 5.Aforementioned major diameter part 4 and small diameter portion 5 are bearing in respectively on the sidewall 2a and another sidewall 2b of aforementioned pedestal 2.

Magnetic head 6 cooperates in the pilot hole 4a that is fixed in the aforementioned major diameter part 4.These magnetic head 6 designs have contact with tape face 6a and be provided with a plurality of (for example 5) outstanding terminal 7(on the 6b of its back side sees Fig. 3).

Gear 8 is fixed on the end that aforementioned magnetic head keeps the small diameter portion 5 of body 3, the gears engaged of this gear 8 and not shown reversing device.

Keep the inside bottom of the pilot hole 4a in the major diameter part 4 of body 3 to rise by aforementioned magnetic head, be arranged on to the opening portion 9 that the peripheral direction of small diameter portion 5 connects on the position of intersection 10 of major diameter part 4 and small diameter portion 5.

One end of the flexible flat cable 11 of this case is fixed on the terminal 7 of aforementioned magnetic head 6 with modes such as solders, the other end of this flexible flat cable 11 is fixed on the amplifying circuit 12, whereby, just couple together between aforementioned magnetic head 6 and the amplifying circuit 12 by flexible flat cable 11.

As shown in Figure 3, aforementioned flexible flat cable 11 is made up of following each several part: be provided with at one end and be connected the head side coupling part 13 on the terminal 7 of aforementioned magnetic head 6; Be arranged on the other end and be connected coupling part, Zoom Side 14 on the aforementioned amplifying circuit 12; The contact part 15 of getting in touch each other in these two coupling parts 13,14.Near the head side coupling part 13 of aforementioned contact part 15, there is one to bend to round the sweep 16 of the counter-rotating central shaft of aforementioned magnetic head 6.Extend with mutual opposite direction along described counter-rotating central shaft at the two ends of this sweep 16, and link to each other with two parts that are connected magnetic head and amplifying circuit respectively.

As shown in Figure 2, aforementioned head side coupling part 13, the opening portion 9 by aforementioned magnetic head maintenance body 3 inserts in the pilot hole 4a, is fixed on the terminal 7 of aforementioned magnetic head 6.In addition, aforementioned bend 16 is configured to be centered around the outside that aforementioned magnetic head keeps the small diameter portion 5 of body 3.Near the part of contact part 15 sweep 16 between aforementioned sweep 16 and coupling part, Zoom Side 14, pass and remain on the upper surface central authorities of another sidewall 2b that is arranged at aforementioned pedestal 2 and in the above central authorities have in the slit 17 of an opening portion 17a.

So, commutation along with the tape running direction, when magnetic head is 180 ° of center counter-rotatings with the axis perpendicular to contact with tape face 6a, sweep 16 is just crooked and be centered around the outside that magnetic head keeps the small diameter portion 5 of body 3, promptly center on the sweep 16 of the counter-rotating central shaft of aforementioned magnetic head 6, the revolution that keeps body 3 along with magnetic head, resemble this magnetic head is kept body 3 to get involved in or it is involved in part rotating loosening, therefore, magnetic head keeps the counter-rotating action of body 3 successfully to be carried out, this magnetic head keeps the turning power of body 3 can not pass to the terminal 7 of magnetic head 6 and fixing part between the head side coupling part 13 or the fixing part between amplifying circuit 12 and the coupling part, Zoom Side 14, and these standing parts can not be subjected to magnetic head to keep body 3 rotating influences and break.

In addition, for the foregoing description, be to make the sweep 16 of flexible flat cable 11 be centered around the outside that magnetic head keeps the small diameter portion 5 of body 3, but be not to only limit to this, keep body 3 for magnetic head, make it can twine flexible flat cable 11 pivotally and also can.

In addition, flexible flat cable 11 adopt as shown in the figure flexible print circuit board much less, even flat type vinyl electric wire also can.

As mentioned above, the application provides so a kind of flexible flat cable that head of automatic reverse type recorder is used that connects, namely along with the commutation of tape running direction, between the magnetic head and amplifying circuit of 180 ° of counter-rotatings centered by perpendicular to the axis of contact with tape face, connect being characterized as of flexible flat cable that head of automatic reverse type recorder uses: at the magnetic head that is connected with the terminal of aforementioned magnetic head Near the side coupling part, there is one to bend to around the sweep of aforementioned magnetic head counter-rotating central shaft.

Therefore, the effect that obtains is, the counter-rotating action of magnetic head can successfully be carried out, turning power bent portion during meanwhile magnetic head counter-rotating action absorbs, can not be delivered to head side coupling part and coupling part, Zoom Side, thus head side coupling part and coupling part, Zoom Side can be owing to the impact of magnetic head counter-rotating action broken string etc.

Claims

1, a kind ofly connects the flexible flat cable that head of automatic reverse type recorder is used, it is characterized by: be between the magnetic head and amplifying circuit of 180 ° of center counter-rotatings in commutation with axis perpendicular to the contact with tape face along with the tape running direction, on the flexible flat cable that the connection head of automatic reverse type recorder is used, near the head side coupling part that is connected with the terminal of aforementioned magnetic head, there is one to bend to around the sweep of aforementioned magnetic head counter-rotating central shaft.

2, according to the described magnetic head flexible flat cable of claim 1, it is characterized in that, described sweep by with magnetic head counter-rotating central axis direction mutually quadrature extend and crooked part of surrounding this counter-rotating central shaft is formed, extend with mutual opposite direction along described counter-rotating central shaft at its two ends, and link to each other with two parts that are connected magnetic head and amplifying circuit respectively.