JPH11233922A - Method for fixing or connecting conductors on printed board and printed board with function of fixing conductors - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable fast fixing and connecting conductors by sandwiching the conductors to be connected by a sandwiching device provided on a printed board on which conductive lines are printed. SOLUTION: Two conductive lines 2 having connecting parts 2a on both ends are printed on a substrate 1. Sandwiching devices 3 are pasted by adhesive near each of the connecting parts 2a of the substrate 1. A sandwiching device 3 is formed by molding a conductive material and is provided with a sandwiching part 3b in a concave form between two crests on bases 3a. The bases 3a of the sandwiching part 3 and the connecting parts 2a of the conductive lines 2 are electrically connected by soldering. Since the sandwiching devices 3 which have been previously provided on the substrate 1 are connected with a continuity to the conductive lines 2 printed on the substrate, conductors 7 to be connected need only to be sandwiched by the sandwiching parts 3b in a concave form between the two crests of the sandwiching devices 3. When the conductors 7 are covered with insulating protective films, it is sufficient that the insulating protective films be eliminated before sandwiching the conductors 7. In this way, the conductors can be fixed and connected to the substrate speedily and easily.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a printed circuit board which is capable of quickly and easily fixing a conductor (referred to as a conductive wire and a conductive pin in this specification) to facilitate connection. The method of fixing the conductor to the printed circuit board, which can quickly and easily fix the conductor to the connection state, has a very small working space for the connection, and is especially suitable for fixing the connection of a very fine conductor. The present invention relates to a method of connecting a conductor to a substrate and a printed circuit board with a conductor fixing function.

[0002]

2. Description of the Related Art A flexible printed circuit board in which conductive wires are printed and wired on a heat-resistant film and a heat-resistant film is overlapped, or a hard printed circuit board made of bakelite or glass epoxy resin, and having a wire diameter of 0.1 mm. 1
The connection with the conductor of about 0.8 mm is made by soldering or bonding. Even if the conductor is supported, its terminal is difficult to determine its position. Since it is difficult to bond the terminal of the conductor whose position is not fixed to the connection portion of the conductive line of the printed circuit board, fixing the terminal of the conductor is a precondition for bonding. Bonding is not suitable for conducting a conductive connection between a terminal where the position of a conductor is not determined in the process of assembling the electromechanical device and a connection portion of a conductive wire on a printed circuit board. In most cases, soldering is performed. Soldering is performed by supporting the terminal of the conductor with one hand, overlapping the conductive wire on the printed circuit board, and supporting the soldering iron with the other hand. In the process of assembling an ultra-small electromechanical device, for example, a spindle motor for a HDD (rotor diameter is about 15 mm), a terminal of a motor coil (wire diameter of about 0.1 to 0.8 mm) and a connection part of a conductive wire of a printed board are Since it is extremely small and needs to be soldered, it is manually soldered using a microscope. However, in this case, as the wire diameter of the motor coil is smaller, the coil wire has less rigidity, and it is difficult to fix the terminal of the coil wire to a soldering position, which requires skill and time. Furthermore, in ultra-small electromechanical devices where the working space for soldering is extremely small and soldering cannot be performed using a microscope, the conductor can be mounted on the printed circuit board without soldering in the component assembly process. There is a need for a means that can be fixed in a conductive state to the connection portion of the conductive wire.

[0003]

DISCLOSURE OF THE INVENTION The present invention has been made in view of the above-mentioned points, and it is possible to quickly and easily fix a conductor to a printed circuit board and to easily connect the conductor. Quickly and easily fix the connection state,
Work space for wiring is extremely small or particularly suitable for fixing ultra-fine conductors. Method for fixing conductors to printed circuit board, method for connecting conductors to printed circuit board, and conductor fixing function To provide a printed circuit board.

[0004]

According to the present invention, there is provided a printing method wherein a clamp is attached to a printed circuit board on which conductive wires are printed, and a conductor to be connected is clamped by the clamp. An object of the present invention is to provide a method for fixing a conductor to a substrate. The present invention also provides a printed circuit board on which conductive wires are printed and wired, by providing a small hole, aligning the small hole provided in the holding device with the small hole, and attaching the holding device to the printed circuit board, The present invention provides a method for fixing a conductor to a printed circuit board, wherein a conductor to be connected is passed through a small hole of the clamp and the conductor is clamped by the clamp.

According to the present invention, there is provided a method of fixing a conductive wire to a printed circuit board, wherein the holding member is formed of a conductive material, and the conductor to be connected is held in an electrically conductive state. It is an object of the present invention to provide a method for connecting a conductor to a printed circuit board, wherein the method comprises connecting the tool and a conductive line of the printed circuit board in an electrically conductive state. The invention of the present application is also directed to a method of fixing a conductive wire to a printed circuit board, wherein the holding member is formed of a non-conductive material, and the conductor to be connected is held in an electrically non-conductive state. It is an object of the present invention to provide a method for connecting a conductor to a printed circuit board, wherein the conductor is electrically connected to the conductive line of the printed circuit board.

Further, the present invention is characterized in that it comprises a printed circuit board on which conductive lines are printed and printed, and a clamp provided on the printed circuit board and capable of clamping a conductor to be connected. An object of the present invention is to provide a printed circuit board with a body fixing function. The present invention also provides a printed circuit board on which conductive lines are printed and provided with small holes, and a printed circuit board attached to the printed circuit board and capable of holding a conductor to be connected and having small holes. The present invention provides a printed circuit board with a conductor fixing function, characterized in that the printed circuit board comprises a clamp which matches a small hole of the printed circuit board.

Further, according to the present invention, the holding member is formed of a conductive material and is electrically connected to a conductive line of a printed circuit board, and the holding member electrically connects the conductor to be connected. An object of the present invention is to provide a printed circuit board with a conductor fixing function, which can be sandwiched in a state of electrical conduction. Further, the invention of the present application is characterized in that the holding member is formed of a non-conductive material, and the printed circuit board is provided with a connection portion for connecting to a conductor held by the holding member. An object of the present invention is to provide a printed circuit board with a conductor fixing function.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described with reference to FIGS. 1 (a) and 1 (b). FIG. 1 (a),
(B) shows a printed circuit board A with a conductor fixing function, in which two conductive lines 2 each having a connection portion 2a at both ends are printed on a substrate 1, and the respective connection portions 2 of the substrate 1 are printed.
A holding tool 3 is adhered to the vicinity of a with an adhesive 4. The clamp 3 is formed of a conductive material, and has a base 3a and a valley-shaped clamp 3b protruding from the base 3a.
The base 3a of the clamp 3 and the connection 2a of the conductive wire 2 are electrically connected by solder 5 to each other.

The substrate 1 is a hard substrate made of paper epoxy resin, bakelite, or glass epoxy resin. The substrate 1 may be a flexible substrate made of a heat-resistant film such as polyimide. In that case, the printed wire is printed on one heat-resistant film, laminated with another heat-resistant film, and the printed wire is used as the conductive wire 2. When exposed without laminating the connection part of the end,
This is preferable because the durability of the conductive wire 2 can be ensured, an electric short circuit can be avoided, and the holding tool 3 can be attached to a position overlapping the conductive wire 2 near the connection portion 2a.

Instead of the solder 5, the base 3a of the clamp 3 and the connection 2a of the conductive wire 2 may be connected by bonding. Soldering or bonding requires a mounting space, but if there is no mounting space at the mounting location, it is preferable to pre-apply solder or bonding. Further, when the holding member 3 is formed of a conductive material, a conductive adhesive is used for the adhesive 4 without soldering or bonding, and the adhesive 4 is applied to the conductive wire 2.
May be bonded to the substrate 1 so as to overlap the end of the connection portion 2a.

As described above, if the clip 3 attached to the substrate 1 is previously connected to the conductive wire 2 printed on the substrate 1 in an electrically conductive state, the conductor to be connected is provided. Reference numeral 7 denotes a valley-shaped clamping portion 3b of the clamping device 3 protruding in a double mountain shape.
It only needs to be firmly pinched so that it does not come off. When the conductor 7 is covered with an insulating protective film, the conductor 7 is sandwiched after removing the insulating protective film.

When the clamp 3 is made of a non-conductive material, no solder 5 or bonding is applied. At this time, the conductor 7 to be connected is firmly clamped so as not to be detached from the valley-shaped clamping portion 3b protruding in a bimodal shape of the clamping device 3,
Further, the end of the conductor 7 is overlapped with the end of the conductive wire 2 printed and printed on the substrate 1 and soldered or bonded so as to be electrically connected. This connection method is also applied to a case where the clip 3 is formed from a conductive material.

FIG. 2 shows a second embodiment of the present invention.
This will be described with reference to (a) and (b). FIG. 2 (a),
(B) shows a printed circuit board B with a conductor fixing function, which is different from the printed circuit board A with a conductor fixing function shown in FIGS. 1 (a) and 1 (b). 3, a small hole 3c is provided in the base 3a, and the small hole 1a is formed in the substrate 1.
Is provided, and the small holes 3c and 1a coincide with each other.
Therefore, after the conductor 7 to be connected is passed through the small holes 1a and 3c from the opposite side of the substrate 1, it is firmly clamped so as not to come off in the valley-shaped clamping portion 3b protruding in a mountain-like manner of the clamping device 3. Then, the conductor 7 and the conductive line 2 printed on the substrate 1 can be electrically connected.

As for the other points, FIG.
Since it is not different from the printed circuit board A with the conductor fixing function shown in (b), the description is omitted, and the corresponding components are denoted by the same reference numerals. It is not necessary to provide the small hole 3c. However, in this case, the small hole 1a is provided near the clip 3 so that the clip 3 is not covered. A third embodiment of the present invention will be described with reference to FIGS.

FIGS. 3 (a) and 3 (b) show a printed circuit board C having a conductor fixing function, which is smaller than the printed circuit board A having a conductor fixing function shown in FIGS. 1 (a) and 1 (b). The clothing 8 is the only difference. The holding member 8 is formed by pressing a conductive plate material, forming a small hole 8a and two cut lines on one side of the small hole 8a, and bending the gap between the two cut lines toward the opposite substrate side. It has a tongue piece 8b. Therefore, the conductor 7 to be connected is passed through the small hole 8a of the clipper 8, and the tongue piece 8b
Is returned so as to be flat, the tip of the tongue piece 8b is pinched to the conductor 7. The clamping force of the clamping device 8 is greater than the clamping force of the clamping device 3 shown in FIG. 1, and the clamping device 8 is strongly clamped so as to bite into the conductor 7, so that the conductor 7 is covered with an insulating protective film. Also, the insulating protective film is broken and sandwiched, so that the sandwiching member 8 made of a conductive plate and the conductor 7 can be electrically connected.

As for the other points, FIG.
Since it is not different from the printed circuit board A with the conductor fixing function shown in (b), the description is omitted, and the corresponding components are denoted by the same reference numerals. A fourth embodiment of the present invention will be described with reference to FIGS. FIG. 4 (a),
(B) shows a printed circuit board D with a conductor fixing function, which is different from the printed circuit board C with a conductor fixing function shown in FIGS. 3 (a) and 3 (b). 8 is provided with a small hole 8a and the substrate 1 is also provided with a small hole 1a, and the small holes 8a and 1a coincide with each other. Therefore,
The conductors 7 to be connected are connected to the small holes 1a and 8 from the opposite side of the substrate 1.
a, the tip of the tongue piece 8b of the tongue piece 8b is bent back so as to be flat, and the tip of the tongue piece 8b is strongly pinched to the conductor 7, so that the conductor 7 and the substrate 1 can be electrically connected to the conductive line 2 printed and printed.

As for the other points, FIG.
Since it is not different from the printed circuit board A with the conductor fixing function shown in (b), the description is omitted, and the corresponding components are denoted by the same reference numerals. Note that the small holes 8c are not necessarily provided, but in such a case, the small holes 1a are provided in the vicinity of the holding device 8 so that the holding device 8 does not cover the small holes 1a. A fifth embodiment of the present invention will be described with reference to FIGS.

This embodiment is applied to a spindle motor having a fluid dynamic bearing, and particularly shows a method of connecting a motor coil to a printed circuit board inside the motor. In FIG. 5A, the spindle motor M has a thrust bearing 9 having thrust dynamic pressure generating grooves formed on both surfaces.
a rotating shaft 9 having a support shaft portion 9b and a radial bearing portion 9c in which a radial dynamic pressure generating groove is engraved on a peripheral surface,
A housing 10, a holding ring 11, a motor frame 12 supporting the housing 10, a rotor 13 fixed to the rotating shaft 9, a stator 14 press-fitted and fixed to an outer periphery of the housing 10, and the stator 14. A motor magnet 15 having, for example, four poles, a permanent magnet 16 provided on the rotor 13, and a media chuck magnet 17 fixed to the upper surface of the rotor 13. FIG. 5B shows a printed circuit board E with a conductor fixing function attached to the upper surface of the motor frame 12 with a double-sided tape 18. The printed circuit board E with the conductor fixing function has eight magnifying glass frame-shaped substrates 1 each having an annular portion and a linear portion, and eight conductive lines 2 having both ends connected to the connecting portion 2a are printed.
In the vicinity of the connection portion 2a located at the annular portion of the substrate 1, a clip 8 is provided.
Is affixed. The clip 8 is the same as that shown in FIG. The terminal 15a of the coil wire of the motor coil 15 is entangled with the pin-shaped conductor 7 inserted into the stator 14, and the pin-shaped conductor 7 is sandwiched between the printed circuit boards C with a conductor fixing function shown in FIG. The pin 8 is inserted into the small hole 8a of the attachment 8, and the tongue piece 8b of the attachment 8 is bent back to be flat, so that the pin 8 holds the pin-shaped conductor 7. Therefore,
The connection method is the same as in FIGS. 3 (a) and 3 (b).

In this embodiment, by arranging the tongue piece 8b on the outer side of the motor, it is possible to secure a space for returning the tongue piece 8b to be flat before the rotor 13 is covered. FIG. 6A shows a sixth embodiment of the present invention.
This will be described with reference to FIG. This embodiment is applied to a spindle motor having a fluid dynamic pressure bearing, and particularly shows a method of connecting a motor coil to a printed circuit board outside the motor. This spindle motor is the same as the spindle motor shown in FIG. 5A except for the structure for connecting the motor coil to the printed circuit board. Therefore, the same components are denoted by the same reference numerals and description thereof is omitted. .

A printed circuit board F having a conductor fixing function shown in FIG.
Is affixed. A printed circuit board F with a conductor fixing function is formed by printing and wiring eight conductive lines 2 having connection portions 2a at both ends on a frame-shaped substrate 1 of a magnifying glass composed of an annular portion and a straight portion. A clip 8 is attached near the connection portion 2a located in the annular portion. Clip 8
Is the same as that shown in FIG. 3, and the relationship between the substrate 1 and the holding member 8 and the connection function are the same as those described in FIG. Since the printed circuit board F with the conductor fixing function is attached to the annular concave portion on the lower surface of the substrate 1, the motor frame 12 is particularly provided with the small holes 12 a, and
5a is passed through the small hole 12a of the motor frame 12, further passed through the small hole 1a of the substrate 1 and the small hole 8a of the
The tongue piece 8b is returned to bend so as to be flat, and a motor coil (corresponding to an electric conductor in the claims) 15a
Is pinched. Therefore, the connection method is as shown in FIG.
Same as (b). The motor coil 15a may be overlapped and soldered on the connection portion 2a at the end of the conductive wire 2 printed and printed on the substrate 1, or may be bonded instead of soldering.

The number of poles and the number of lines are not limited. FIG. 6 shows a sixth embodiment of the present invention.
A printed circuit board G with a conductor fixing function shown in FIG. 7 can be used instead of the printed circuit board F with a conductor fixing function shown in FIG. In the printed circuit board G with the conductor fixing function, eight conductive lines 2 whose both ends are connected portions 2a are printed on a frame-shaped substrate 1 of a magnifying glass,
A clip 19 is attached to the annular portion of the substrate 1. The clamping device 19 is formed in an annular shape from a non-conductive material,
A small hole 19 is formed in a portion corresponding to the connection portion 2a so as not to cover the connection portion 2a of the conductive wire 2 printed and printed on the substrate 1.
a is provided, and near each small hole 19a,
A small hole 19b and a tongue piece 19c similar to the small hole 8a and the tongue piece 8b of the clipping tool 8 shown in Fig. 6B are provided, and correspond to the small holes 19b of the clipping tool 19. A small hole 1a is provided in the substrate 1, so that the motor frame 1 in FIG.
Further, the motor coil terminal 15a passed through the small hole 12a is further passed through the small holes 1b and 19b, and then the tongue piece 19c is crimped back so that the bend becomes flat, and the motor coil terminal 15a is removed by the tongue piece 19c. After strongly clamping, the connection portion 2 further exposes the motor coil terminal 15a into the small hole 19a.
a of the motor coil terminal 15a pinched by the tongue piece portion 19c, or the terminal of the motor coil terminal 15a is bonded to the connection portion 2a exposed in the small hole 19a. Connect with

In this embodiment, since the clamp 19 is formed of a non-conductive material, the clamp 19 is independent so as to correspond to each connection portion 2a as in the clamp 8 shown in FIG. 6B. It is not necessary to have a shaped shape.

[0023]

According to the method for fixing a conductor to a printed circuit board, the method for connecting a conductor to a printed circuit board, and the printed circuit board with a conductor fixing function, all of the present invention provide:
The conductor can be fixed and connected to the board quickly and easily, and it is suitable for the connection of the conductor in ultra-small electronic products where the work space for the connection is extremely small. It is suitable for the connection of the conductive wire when it is difficult to stabilize the position of the terminal in the vicinity of the connection portion even if the terminal is supported.

[Brief description of the drawings]

FIG. 1A is a front view of a printed circuit board with a conductor fixing function according to a first embodiment of the present invention, and FIG. 1B is an enlarged cross-sectional view of a main part for describing a fixing and wiring method.

FIG. 2A is a front view of a printed circuit board with a conductor fixing function according to a second embodiment of the present invention, and FIG. 2B is an enlarged cross-sectional view of a main part for describing a fixing and wiring method.

FIG. 3A is a front view of a printed circuit board with a conductor fixing function according to a third embodiment of the present invention, and FIG. 3B is an enlarged cross-sectional view of a main part for describing a fixing and wiring method.

FIG. 4A is a front view of a printed circuit board with a conductor fixing function according to a fourth embodiment of the present invention, and FIG. 4B is an enlarged cross-sectional view of a main part for describing a fixing and wiring method.

FIG. 5A is a longitudinal sectional view of a spindle motor equipped with a printed circuit board with a conductor fixing function according to a fifth embodiment of the present invention, and FIG. 5B is a front view of the printed circuit board with a conductor fixing function. FIG.

FIG. 6A is a longitudinal sectional view of a spindle motor equipped with a printed circuit board with a conductor fixing function according to a sixth embodiment of the present invention, and FIG. 6B is a front view of the printed circuit board with a conductor fixing function. Department.

FIG. 7 is a front view of a printed circuit board with a conductor fixing function according to a seventh embodiment of the present invention.

[Explanation of symbols]

 A: Printed circuit board with conductor fixing function 1: Board 2: Conductive wire 2a: Connection part 3: Clamping tool 3a: Base 3b: Valley-shaped clamping part 4 ... Adhesive 5 ... Solder 7 ... Conductor B ... Printed circuit board with conductor fixing function 1a ... Small hole 3c ... Small hole C ... Printed circuit board with conductor fixing function Description of Reference Numerals 8: clamping tool 8a: small hole 8b: tongue piece D: printed circuit board with conductor fixing function M: spindle motor 9a: thrust bearing 9b: support shaft Part 9c ... Radial bearing part 9 ... Rotary shaft 10 ... Housing 11 ... Holding ring 12 ... Motor frame 12a ... Small hole 13 ... Rotor 14 ... Stator 15 ...・ Motor coil 15a ・ ・ ・ Motor coil terminal ( Conductor) 16: Permanent magnet 17: Magnet for media chuck 18: Double-sided tape E: Printed board with conductor fixing function F: Printed board with conductor fixing function G: Conductive Printed circuit board with body fixing function 19: Clamping device 19a: Small hole 19b: Small hole 19c: Tongue piece

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Isamu Takehara 1-8-1, Nakase, Mihama-ku, Chiba-shi Inside Seiko Instruments Inc. (72) Inventor Takashi Ishida 1-8-1, Nakase, Mihama-ku, Chiba-shi, Chiba Inside Iko Instruments Co., Ltd. (72) Inventor Shinichi Hayashizaki 1-8-1, Nakase, Mihama-ku, Chiba City, Chiba Prefecture Inside Inko Instruments Co., Ltd. (72) Hiromasa Shimaguchi 1-8-1, Nakase, Mihama-ku, Chiba City, Chiba Inside Instruments Co., Ltd. (72) Inventor Katsushige Konno 1-8-8 Nakase, Mihama-ku, Chiba-shi, Chiba Seiko Instruments Inc.

Claims (8)

[Claims] 1. A method for fixing a conductor to a printed circuit board, wherein a clamp is attached to a printed circuit board on which conductive lines are printed and wired, and a conductor to be connected is clamped by the clamp. . 2. A printed circuit board on which conductive lines are printed and wired, a small hole is provided, and the small hole provided on the holding member is aligned with the small hole, and the holding member is attached to the printed circuit board. And passing the conductor to be connected to the small hole of the holding member, and holding the conductor with the holding member. 3. The method for fixing a conductive wire to a printed circuit board according to claim 1, wherein the holding member is formed of a conductive material, and the conductor to be connected is held in an electrically conductive state. A method of connecting a conductor to a printed circuit board, wherein the conductor is attached to the printed circuit board and the conductive wire of the printed circuit board is electrically connected. 4. The method for fixing a conductive wire to a printed circuit board according to claim 1, wherein the holding member is formed of a non-conductive material, and the conductor to be connected is electrically non-conductive. A method for connecting a conductor to a printed circuit board, wherein the conductor is connected to the printed circuit board in an electrically conductive state. 5. A conductor fixing function, comprising: a printed circuit board on which conductive lines are printed and printed; and a holding member attached to the printed board and capable of holding a conductor to be connected. With printed circuit board. 6. A printed circuit board on which a conductive wire is printed and provided with a small hole, and a small hole provided on the printed circuit board and capable of holding a conductor to be connected and having a small hole. And a holding member that matches a small hole of the printed circuit board. 7. The holding device according to claim 5 or 6, wherein the holding device is formed of a conductive material, and is connected to a conductive line of the printed circuit board in an electrically conductive state. A printed circuit board having a conductor fixing function, wherein the conductor to be connected can be held in an electrically conductive state. 8. The connection device for connecting the holding member according to claim 5 or 6 made of a non-conductive material to the printed circuit board so as to connect to a conductor held by the holding member. A printed circuit board with a conductor fixing function, characterized by comprising a portion.