JP3455106B2 - Coil bobbin, mounting method thereof, and tape player using coil bobbin - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coil bobbin, and more particularly to a coil bobbin having a mounting arm formed with a locking portion for mounting on a mounting member.

[0002]

2. Description of the Related Art A conventional coil bobbin 21 is made of a resin material and is formed by molding or the like. As shown in FIG.
On both sides of the cylindrical winding portion 22 having the hollow hole 22a,
The pair of collar portions 23 are integrally formed. Also,
A mounting surface 23 a is formed on the collar portion 23, and the mounting surface 23 a
End surface portions 23b and 23b are formed on the left and right sides of a.
A cantilevered mounting arm 24 having a connecting portion 24a is connected and formed outside the end surface portions 23b, 23b. The arm portion 24 is formed thicker than the thickness dimension of the mounting surface 23a of the collar portion 23. The mounting arm 24 is formed with an arm portion 24b extending downward from the connecting portion 24a in the drawing, and a locking portion 24c formed of a hook-shaped claw is formed at the tip of the arm portion 4b. The mounting arm 24 is cantilevered by the connecting portion 24a, and the locking portion 24c is a free end.

A solenoid (not shown) using the coil bobbin 21 having the above-described structure has two collar portions 23, 2
A conducting wire is wound around the winding portion 22 sandwiched by 3 to form a predetermined coil (not shown). A conventional coil bobbin 21 on which this coil is formed is installed in a device (not shown).
As a mounting method for mounting the coil bobbin 21 on the side, the coil bobbin 21 on which the coil is formed is pressed into the mounting plate 10 of the mounting member 9 by applying a load from above. Then, the arm portion 24b of the cantilevered mounting arm 24 is expanded outward by the slope 10c of the engaging portion 9b of the mounting plate 10 and elastically deformed, and the locking portion 24c is engaged by the engaging portion 10b of the mounting plate 10. Snapped into the
It is attached to the attachment member 9 so as not to come off. A solenoid is configured by inserting a movable iron core (not shown) into the hollow hole 22a of the coil bobbin 21 attached to the attachment member 9 as described above. The solenoid attached to such a device (not shown) is excited by passing a current through the coil of the coil bobbin 21, moves the movable iron core, and switches, for example, the operation mode on the device side.

[0004]

However, in the conventional coil bobbin 21 as described above, the free end side engaging portion 24c side of the cantilever-shaped mounting arm 24 is shown in FIG. It deformed as shown, and a step D was formed between the collar portion 23 and the mounting arm 24. When there is such a step D, when a wire is wound around the winding portion 22 to form a coil (not shown), the wire 2 has an end surface portion 2 on which the step D is formed.
There is a problem in that the conductor wire cannot be wound correctly by riding on 3b, and the performance of the coil varies. Further, when the mounting arm 24 is deformed, even if the coil bobbin 21 is mounted on the mounting member 9 on the apparatus side, the locking portion 2
4c could not be properly engaged with the engaging portion 10b on the side of the mounting member 9, the mounting strength varied, and the coil bobbin 21 might slip out of the mounting member 9 when vibration or the like is applied from the outside. An object of the coil bobbin of the present invention is to solve the above-described problems and to obtain a stable mounting strength without variation in the performance of the wound coil and when the coil is attached to the attachment member 9.

[0005]

As a first means for solving the above problems, a coil bobbin according to the present invention is a coil bobbin having a hollow hole, and a collar portion formed on both sides of the coil portion. And two opposing end surface portions formed on the respective collar portions, and mounting arms formed along the longitudinal direction of the end surface portions on the outer sides of the two end surface portions. It is connected to the collar part by a connecting part formed at one end,
A severable connecting portion provided on a part of the mounting arm is connected to the end surface portion of the flange portion.

Further, as a second means for solving the above-mentioned problems, the connecting portion is formed with a thin portion which is easily cut.

As a third means for solving the above-mentioned problems, the mounting arm has a locking portion formed near the tip thereof, and the connecting portion is provided between the locking portion and the end surface portion. It was configured.

Further, as a fourth means for solving the above-mentioned problems, the cut connecting portion is left on the mounting arm side and / or the end face side.

As a fifth means for solving the above-mentioned problems, the coil bobbin mounting method according to the present invention is provided with a collar portion provided on both sides of a hollow winding portion, and a collar portion formed on the collar portion. Two end surfaces, two mounting arms provided outside the end surface and having a connecting portion that is connected to the collar, and a connecting portion that connects the mounting arm and the end surface in a severable state. After the coil bobbin provided is wound with a coil around the winding part sandwiched by the collar part, a mounting member made of a metal plate or the like is press-fitted between the two mounting arms, and the connecting part is cut off. The mounting arm is snap-engaged with the mounting member for mounting.

As a sixth means for solving the above-mentioned problems, a thin portion which is easy to cut is formed in a part of the connecting portion, and the thin portion is used for cutting.

As a seventh means for solving the above-mentioned problems, a locking portion is formed at the tip of the mounting arm, and the locking portion is engaged with the engaging portion of the mounting member to engage the engaging member. The configuration was stopped.

Further, as an eighth means for solving the above-mentioned problems, the tape player of the present invention comprises:
In 2, 3, 4, 5, 6 or 7, a movable iron core is inserted into the hollow hole of the coil bobbin to be used as a solenoid.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A coil bobbin of the present invention, a method of mounting the coil bobbin, and a tape player using the coil bobbin will be described with reference to FIGS. FIG. 1 is a left side view, a front sectional view, and a right side view of a coil bobbin of the present invention. FIG. 2 is an enlarged view of an essential part for explaining the thin portion of the connecting portion of the coil bobbin. FIG. 3 is a perspective view of a mode detection unit of a tape player to which the coil bobbin of the present invention is attached. FIG. 4 is a diagram for explaining a mounting method for mounting the coil bobbin to the mounting member, and FIG. 5 is a mode detection unit of a tape player in which a movable iron core is inserted into the coil bobbin of the present invention and used as a solenoid.

The coil bobbin 1 of the present invention is made of a resin material, and as shown in the sectional front view of FIG. 1B, a winding portion 2 is formed in a cylindrical shape and a hollow hole 2a is formed therein. A collar 3 is provided on the left side of the winding portion 2 in the figure, and a collar 5 is provided on the right side of the figure.
And are integrated with the winding portion 2 with a predetermined thickness, respectively, and are formed by molding or the like. As shown in FIG. 1A, the flange portion 3 on the left side has a flat mounting surface 3a on its outer surface.
Is formed, and a step higher than the mounting surface 3a by a predetermined dimension is formed above the mounting surface 3a in the figure. Further, two opposing end surface portions 3b, 3b are vertically formed on the left and right end surfaces sandwiching the mounting surface 3a, and the end surface portion 3b is formed.
The lower side of the figure has a stepped shape as shown in FIG. 1A. Two stoppers 3c for positioning when the coil bobbin 1 is mounted on a mounting member 10 to be described later are provided on the left and right at an obliquely upper portion of the hollow surface 2a above the mounting surface 3a.

Outside the end faces 3b, 3b, mounting arms 4, 4 are formed along the longitudinal direction of the end faces 3b, 3b.
Is provided. The attachment arm 4 has a connecting portion 4a, which corresponds to a human shoulder, formed on one end side in the upper part of the drawing, and the attaching arm 4 is connected to the collar portion 3 by the connecting portion 4a. The mounting arm 4 has an arm portion 4b extending downward from the connecting portion 4a in the drawing, and a locking portion 4c formed of a hook-shaped claw at the tip of the arm portion 4b. Further, a disconnectable connecting portion 4d is formed in the engaging portion 4c which is a part of the mounting arm 4, and the engaging portion 4d connects the engaging portion 4d and the end surface portion 3b of the flange portion 3 with each other. ing. Further, a predetermined gap 3d is formed between the end surface portion 3b and the mounting arm 4. In this way, since the mounting arm 4 is connected to the flange 3 by the connecting portion 4a and the connecting portion 4d and is supported on both sides, even if heat shrinkage occurs during the molding process, the mounting arm 4 does not warp. Deformation can be prevented.

Further, the right side flange portion 5 is also provided with a mounting arm 6 with a gap 5d outside the end surface portions 5b and 5b interposed therebetween, as in the case of the left side flange portion 3. Has a connecting portion 6a, an arm portion 6b, a locking portion 6c, and a connecting portion 6d, respectively, and is connected to the collar portion 5 by the connecting portion 5a and the connecting portion 6d. In addition, a thin portion 4e that can be easily cut is formed on a part of the cuttable connecting portion 4d on the side of the collar portion 3. As shown in FIG. 2A, for example, as shown in FIG. 2A, the thin portion 4e has a thickness dimension B on the end face portion 3b side of the collar portion 3 that is thinner than the thickness dimension A on the mounting arm 4 side. The thin portion 4e is used. Therefore, when a force is applied to spread the locking portion 4c of the mounting arm 4 outward in the direction of the arrow D, the connecting portion 4d is easily cut from the thin portion 4e, and the mounting arm 4 is elastically deformed. The locking portion 4c separates from the end surface portion 3b, and the gap 3d widens. And the connecting portion 4 cut from the thin portion 4e of the dimension B
d does not fall and remains on the mounting arm 4 side.

The thin portion 4e may be formed on the side of the mounting arm 4 as shown in FIG. 2B. In this case, the connecting portion 4e after cutting remains on the end face portion 3b side. Alternatively, as shown in FIG. 2C, the thin portion 4e may be formed substantially in the center of the connecting portion 4d. In this case, the connecting portion 4d may be formed.
Is half the length, and remains on both the end face 3d side and the mounting arm 4 side. That is, the cut connecting portion 4d is
The mounting arm 4 and / or the end surface 3d is left. Such a thin-walled portion 4e of the mounting arm 4 on the side of the collar portion 3 which is easy to cut is also formed on the mounting arm 6 of the collar portion 5 in the same manner, though description thereof is omitted.

In order to use the coil bobbin 1 having the above-mentioned structure for a solenoid, as shown in FIG.
A coil 7 is formed by winding an insulation-coated conductor wire a predetermined number of times around a winding portion 2 sandwiched between two flange portions 3 and 5 by a winding machine or the like. The coil bobbin 1 on which this coil 7 is formed,
For example, a method of attaching the tape player to the mode switching unit Y of the tape player will be described with reference to FIGS. The mode switching unit Y of the tape player is provided with a mounting member 9 formed integrally with a chassis made of a metal plate or the like. The mounting member 9 has mounting plates 10 and 11 formed by bending both ends of a bottom plate 9a integrated with the chassis into a substantially U shape. These two mounting plates 10,
11 has the same shape of the portion where the coil bobbin 1 is press-fitted and attached, and therefore only one mounting plate 10 side will be described and the other mounting plate 11 side will be omitted.

The mounting plate 10 has a flat mounting portion 10a.
And engaging portions 10b and 10b are formed by projecting right and left ends of the mounting portion 10a outward at right angles, and the inside of the engaging portion 10b is high and the outside is low. Inclined surfaces 10c and 10c are provided. Also, the inclined surface 1
On the upper part of 0c, convex portions 10d and 10d having rounded or chamfered ends are formed. The mounting plate 10 as described above is formed symmetrically. The coil bobbin 1 on which the coil 7 is wound is pressed from above onto the mounting plate 10 by hand or by a predetermined jig (not shown) or the like, and is mounted between the two mounting arms 4 and 4. The convex portion 10d of the plate 10 is press-fitted.

Then, as shown in FIG. 4B, the locking portion 4c
Is expanded outward by the convex portion 10d of the mounting plate 10 and the slope 10c, the arm portion 4b is elastically deformed, the connecting portion 4d is cut from the thin portion 4e, and the connecting portion 4 is separated from the end surface portion 3b. It remains in a state of being stuck to the side of the stopper 4c. After that, when the coil bobbin 1 is further pressed downward, as shown in FIG. 4C, the elastic force of the mounting arm 4 exerts a force for returning the mounting arm 4 to the initial state, and the locking portion 4c engages with the mounting plate 10. It is locked to the portion 10b. Then, the engaging portion 4c of the coil bobbin 1 is engaged with the engaging portion 10b of the mounting member 9, and the mounting arm 4 of the coil bobbin 1 is snap-engaged with the mounting member 9 to be mounted.

When the coil bobbin 1 is mounted on the mounting member 9 such as the mode switching unit Y of the tape player by the mounting method described above, the coil bobbin 1 is then mounted.
The movable iron core 8 made of a magnetic material as shown in FIG. 3 is inserted into the hollow hole 2a of FIG. The movable iron core 8 is composed of a rod-shaped plunger portion 8a and a flange portion 8b, and the plunger portion 8a is inserted into the hollow hole 2a so as to be movable. The solenoid S is the coil 7
By passing a current through the solenoid S, the solenoid S is excited and the movable iron core 8 can be slid.

A movable iron core 8 is inserted into the coil bobbin 1 of the present invention and used as a solenoid S. For example, in a tape player, the coil bobbin 1 is attached to a mounting member 9 of a mode changing unit Y as shown in FIG. The mounting method is as described above. Then, one end of a trigger lever 12 is attached to the collar portion 8b of the movable iron core 8, and the trigger lever 12 is rotatable about a support portion 12a as a rotation center. Further, a cam is formed at the other end of the trigger lever 12 so that it can be engaged with a rotatable switching gear 13 and a swingable swing plate 14. A rotatable idle gear 15 is attached to the other end of the swing plate 14, and when the swing plate 14 swings, the idle gear 15
Is designed to move left and right. Further, capstans 16 and 17 for driving the tape in the normal direction or the reverse direction are arranged on the left and right of the idle gear 15.

By exciting the solenoid S to rotate the trigger lever 12, the rotational position of the switching gear 13 is regulated. By regulating the rotational position of the switching gear 13, the swing plate 14 is moved in a predetermined direction. Rock. The swing of the swing plate 14 swings the idle gear 15 left and right,
By driving either one of the tape driving capstans 16 and 17, a tape (not shown) can be fed in the normal direction or the reverse direction.
Further, the driving of both capstans 16 and 17 can be stopped. Thus, the solenoid S using the coil bobbin 1 of the present invention used in the tape player gives a trigger for switching the play mode or the stop mode of the tape player, and the mounting arm 4 of the coil bobbin 1 has the connecting portion 4d. Since it is not deformed, it can be reliably and stably mounted on the mounting plates 10 and 11 of the mounting member 9, and is detached from the mounting member 9 even if a force for moving the movable iron core 8 by exciting the solenoid S is applied. There is no problem and stable mounting is possible.

[0024]

According to the coil bobbin of the present invention, the connecting portion formed at one end of the mounting arm formed along the longitudinal direction of the end surface portion and the disconnectable connecting portion provided at a part of the mounting arm. Since the coil bobbin is connected to the end surface of the collar portion by the and, deformation of the mounting arm due to heat shrinkage or the like can be prevented after the coil bobbin is formed. Further, since the connecting portion is provided, deformation of the mounting arm during transportation can be prevented. Since the mounting arm is not deformed, a high-performance coil bobbin can be provided without the conductive wire riding on the end face portion of the collar portion when forming the coil in the winding portion. Further, since the mounting arm is not deformed, the mounting strength when mounted on the mounting member is stable, and stable mounting can be performed that does not come off even when an impact or the like is applied from the outside.

Further, since the connecting portion is formed with a thin portion which can be easily cut, the connecting portion can be easily cut when the mounting arm is snap-locked to the mounting member. It can be cut manually with one touch without the need for jigs.

Further, since the mounting arm has a locking portion formed near the tip and the connecting portion is provided between the locking portion and the end surface portion, the deformation of the mounting arm can be prevented more reliably. You can
Further, a high-performance coil bobbin can be provided.

Further, since the cut connecting portion is left on the mounting arm side and / or the end face side, it is possible to prevent the cut pieces of the connecting portion from falling and prevent the adverse effects of the cut pieces. it can.

Further, the coil bobbin mounting method of the present invention is provided with a collar portion provided on both sides of the hollow winding portion, two end face portions formed on the collar portion, and an outer side of the end face portion. And a coil bobbin having two attachment arms each having a connection portion connected to the collar portion and a joint portion that connects the attachment arm and the end surface portion in a severable state, the coil bobbin being sandwiched between the collar portions. A coil is mounted on the winding portion, and a mounting member made of a metal plate or the like is press-fitted between the two mounting arms to cut the connecting portion, and then the mounting arm is snap-engaged with the mounting member. Since the coil is attached by being installed, it is possible to provide a high-performance coil which can be stably attached and in which the conducting wire does not ride on the end face portion of the collar portion.

Further, since a thin portion which can be easily cut is formed in a part of the connecting portion and the thin portion is used for cutting, it can be easily attached to the attaching member by hand or the like, and the assembling efficiency is good. .

Further, since the engaging portion is formed at the tip of the mounting arm and the engaging portion is engaged with and engaged with the engaging portion of the attaching member, the engaging portion having no deformation is attached to the attaching member. It can be locked by engaging with and can be stably attached.

Further, in the tape player using the coil bobbin of the present invention as described above, since the movable iron core is inserted into the hollow hole and used for the solenoid, the workability of attaching the coil bobbin is good and the attaching strength is stable. Therefore, even if an external shock is applied to the tape player,
There is no problem that the coil bobbin comes off.

[Brief description of drawings]

FIG. 1 is a left side view, a front sectional view, and a right side view of a coil bobbin of the present invention.

FIG. 2 is an enlarged view of an essential part for explaining the thinness of the connecting portion of the coil bobbin of the present invention.

FIG. 3 is a perspective view illustrating attachment of the coil bobbin of the present invention to a mode switching unit of a tape player.

FIG. 4 is a schematic view illustrating a method of mounting the coil bobbin of the present invention.

FIG. 5 is a bottom view of the coil bobbin of the present invention attached to a mode switching unit of a tape player.

FIG. 6 is a front view of a conventional coil bobbin.

FIG. 7 is a perspective view of relevant parts for explaining the problems of the conventional coil bobbin.

[Explanation of symbols]

1 coil bobbin 2 winding part 2a hollow hole 3 collar part 3a Mounting surface 3b end face 3c Stopper part 3d gap 4 mounting arms 4a connection part 4b arm 4c Locking part 4d joint 4e Thin part 5 collar part 6 mounting arms 7 coils 8 movable iron core 8a Plunger part 8b collar part Y tape player mode switching unit 9 Mounting member 10 Mounting plate 11 Mounting plate 12 Trigger lever 13 Switching gear 14 Swing plate 15 idle gear 16 capstan 17 Capstan

Front page continuation (58) Fields surveyed (Int.Cl. ⁷ , DB name) H01F 7/06

Claims (8)

(57) [Claims] 1. A winding part having a hollow hole, flanges formed on both sides of the winding part, two end face parts facing each other formed on the respective flange parts, and the two end faces. A mounting arm formed along the longitudinal direction of the end surface portion is provided on the outer side of the portion, and the mounting arm is connected to the collar portion by a connecting portion formed at one end, and is attached to a part of the mounting arm. A coil bobbin, wherein the cuttable connecting portion provided is connected to the end surface portion of the collar portion. 2. The coil bobbin according to claim 1, wherein the connecting portion has a thin portion which is easily cut. 3. The mounting arm according to claim 1, wherein a locking portion is formed near the tip, and the connecting portion is provided between the locking portion and the end surface portion. Coil bobbin. 4. The coil bobbin according to claim 1, wherein the cut connecting portion is left on the mounting arm side and / or the end surface side. 5. A collar portion provided on both side portions of a hollow winding portion, two end face portions formed on the collar portion, and an outer side of the end face portion, which are connected to the collar portion. A coil bobbin including two mounting arms having a connecting portion and a connecting portion that connects the mounting arm and the end surface portion in a disconnectable state is wound around the winding portion sandwiched by the collar portion. At the same time, a mounting member made of a metal plate or the like is press-fitted between the two mounting arms to cut the connecting portion, and then the mounting arm is snap-engaged with the mounting member for mounting. How to install the coil bobbin. 6. The method of mounting a coil bobbin according to claim 5, wherein a thin portion which is easy to cut is formed in a part of the connecting portion, and the thin portion cuts. 7. A locking portion is formed at the tip of the mounting arm,
7. The coil bobbin mounting method according to claim 5, wherein the locking portion is engaged and locked with the engaging portion of the mounting member. 8. The tape player according to claim 1, 2, 3, 4, 5, 6 or 7, wherein a movable iron core is inserted into a hollow hole of the coil bobbin and used as a solenoid. .