JPH08163805A - Motor with board mounting means - Google Patents

Abstract

PURPOSE: To obtain a motor having a board mounting means in which the motor can be fixed directly to a required position on a board by providing a board mounting leg at a part of the motor case. CONSTITUTION: A part of the motor case 15 of a motor 1 is formed flat to provide a bottom part 12 on which two pins 2 are stood. Two pins 2, 2 are passed through holes 80 made through a printed board 8 and soldered, at the forward end parts thereof, to the printed board 8. Since the motor 1 is not secured indirectly to the printed board 8 through a motor holder but secured directly and firmly to the printed board 8, generation of noise or falling of motor can be prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a motor having a substrate mounting means which has a substrate mounting means directly on a motor body and does not require a motor holder.

[0002]

2. Description of the Related Art Conventionally, in order to mount a motor on a board such as a printed wiring board, it has been common to insert the motor into a motor holder provided on the board. It is a silent call device for pagers and mobile phones that are particularly required to be downsized.
The vibrator motor with an eccentric weight attached to the rotary shaft
It was indirectly mounted on the printed wiring board via a motor holder.

As shown in FIGS. 14 and 15, the motor holder 9 is formed by pressing a thin metal plate, and elastic pieces 90 that hold the motor from both sides.
And a claw 91 (or a pin) of the bottom portion 92. The motor holder 9 is fixed on the substrate by the claw 91 of the bottom portion 92, and is mounted by pushing the motor M between the two elastic pieces 90 from above.

[0004]

However, such a motor holder has the following problems.
That is, it is necessary to squeeze into a complicated shape by pressing and make an incision and bend it outward in order to form a claw for fixing on the substrate. In addition, since it is necessary to have enough elasticity to hold the motor, inexpensive materials cannot be used. Therefore, the process is complicated and the cost is high. Further, when the motor is started, there is a problem that noise is generated between the motor and the elastic piece that holds the motor due to resonance. In the worst case, the resonance action even causes the motor to drop out of the motor holder. In order to prevent resonance and dropout, a double-sided adhesive tape is attached to the motor holder, or an adhesive is used to bond and fix the motor and the motor holder.

Further, it is necessary to mold the motor holder according to the size and shape of the motor case. This is because if the shapes do not match, the above-mentioned problems of noise and dropout are more likely to occur. It is considered that the work of fixing the motor holder on the substrate and attaching the motor to the motor holder is a wasteful process.

As described above, the motor is directly mounted on a substrate such as a printed wiring board without using a motor holder that is complicated in various steps and uses an elastic material, which is costly and causes noise due to resonance. If it can be attached, the above-mentioned problems can be solved, workability can be improved, cost can be reduced, noise due to resonance can be prevented, noise can be prevented from falling off, and the like. The present invention aims to solve such a problem.

[0007]

In view of the above problems, the inventor of the present invention invented a motor having a board mounting means in which a board mounting leg is provided on a part of a motor case.

According to a second aspect of the present invention, there is provided a motor having the board mounting means according to the first aspect, wherein a pedestal is interposed between the motor case and the board mounting leg.

According to a third aspect of the present invention, there is provided a motor having the board mounting means according to the second aspect, wherein the pedestal is made of metal.

According to a fourth aspect of the present invention, there is provided a motor having the board mounting means according to the second aspect, wherein the pedestal is made of ceramics.

According to a fifth aspect of the present invention, there is provided the motor having the board mounting means according to the second aspect, wherein the pedestal is made of synthetic resin.

According to a sixth aspect of the present invention, there is provided a motor having the substrate mounting means according to the first aspect, wherein the substrate mounting leg is made of a solderable metal.

The invention according to claim 7 is characterized in that a non-removal check means for preventing slipping out is provided at the tip of the leg for mounting the board by a required dimension larger than the insertion hole of the board. It is a motor provided with a board mounting means.

The invention according to claim 8 is characterized in that at least two legs for mounting the substrate are conductive, and both poles of the motor are wired to the two legs, respectively. Is a motor equipped with.

The invention according to claim 9 is characterized in that at least one leg for mounting the substrate is conductive and the body ground of the motor is wired to the leg portion. Is a motor equipped with.

According to a tenth aspect of the present invention, a ground line is formed on the pedestal, and a contact means for the body ground of the motor is formed on a part of the ground line.
The motor having the board mounting means according to claim 2, wherein the other portion is wired to at least one conductive leg for mounting on the board.

[0017]

According to the present invention, the conventional motor holder is unnecessary, and the motor can be directly moved to a desired position on the board by the board mounting means provided in a part of the motor case, that is, the board mounting legs. Can be attached.

Further, according to the second aspect of the present invention, since the pedestal is interposed between the motor case and the board mounting leg, the board mounting leg should be provided on the pedestal side which is easier to process. The motor can be attached to the desired position on the substrate directly with the pedestal.

Further, according to the third aspect of the present invention, since the pedestal is made of metal, the motor case and the pedestal are adhered by means such as welding, and the motor is directly placed on the substrate at a desired position together with the metallic pedestal. It is attached.

Further, according to the structure of claim 4, since the pedestal is made of ceramics, the motor case and the pedestal are adhered by an adhesive agent or the like, and the motor is directly attached to the ceramic pedestal at a desired position on the substrate. To be

Further, according to the fifth aspect of the invention, since the pedestal is made of synthetic resin, the motor case and the pedestal are adhered by an adhesive agent or the like, and the motor together with the pedestal made of synthetic resin is directly required on the substrate. Mounted in position.

According to the structure of claim 6, the legs for mounting the board are made of solderable metal, so that the motor is soldered to the board after the pedestal is inserted into the holes of the board. It is fixed by attachment.

According to the structure of claim 7, since the non-removal preventing means which is larger than the insertion hole of the board by a required dimension is provided at the tip end of the board mounting leg, the motor is mounted on the pedestal. If the legs of the pedestal are inserted so as to be pushed into the holes of the substrate, they are securely fixed by the non-return means.

According to the structure of claim 8, at least two legs for mounting on the board are conductive, and both poles of the motor are wired to the two legs, respectively. It is not necessary to pull out the lead wire of the motor and connect it to the required part, and the motor is fixed to the board by soldering after mounting the pedestal and legs of the pedestal into the holes of the board.
In addition, the leg portion serves as a power supply path to the motor.

According to the ninth aspect of the invention, since at least one leg for mounting the board is conductive and the body ground of the motor is wired to the leg, the leg is grounded on the board. If it is connected to the line, the motor can be supplied with power only by the wiring on the positive side.

Further, according to the structure of claim 10, an earth line is formed on the pedestal, a contact means for the body earth of the motor is formed on a part of the earth line, and the other part is for mounting on a board. Since it is wired to at least one conductive leg of the motor, the ground line of the motor is secured by connecting the conductive leg to the ground line of the substrate.

[0027]

Embodiments of the present invention will be described below with reference to the drawings, but the present invention is not limited to these embodiments.

A first embodiment of the present invention will be described with reference to FIGS. 1 and 2. The first embodiment is a motor case 1 of the motor 1.
5 is a motor having a substrate mounting means in which a part of 5 is flatly formed to form a bottom portion 12, and two pins 2 are erected on the bottom portion 12. The distance between the pins 2 and 2 may be matched with the distance between the holes of the board to be mounted, or conversely, the holes of the board may be opened according to the distance between the pins 2 and 2. In the figure, reference numeral 10 is a shaft of the motor 1, and reference numeral 11 is two plus and minus lead wires.

In this embodiment, as shown in FIG. 2, the two pins 2 and 2 are inserted into the holes 80 of the printed circuit board 8 and the tips thereof are fixed to the printed circuit board 8 by soldering. Since the bottom portion 1 of the motor 1 has a flat plate shape, it is closely fixed to the printed circuit board 8.

As a result, it is not necessary to mount the motor holder on the printed circuit board 8 and then indirectly fix the motor to the motor holder afterward, unlike the conventional case.
The conventional motor holder is no longer necessary, and the motor can be directly mounted at a desired position on the board. Since the motor 1 is directly and firmly fixed to the printed circuit board 8, it does not generate noise or fall off.

Although the number of the pins 2 in this embodiment is two, three or more pins may be provided. It is also possible to adopt a mounting method in which the pin 2 is formed long and a styrofoam or rubber cushion material is inserted between the motor case 15 and the printed circuit board 8.

Next, FIGS. 3 and 4 show a second embodiment. The bottom part 1 is formed by flatly molding a part of the motor case 15.
2 is a motor having a board mounting means in which the pedestals 3 on which the pins 2 are erected are fixed by welding at two positions before and after the bottom portion 12.

Two pins 2 are provided in the holes 80 of the printed circuit board 8.
2 is inserted, and its tip is fixed to the printed circuit board 8 by soldering. According to FIG. 4, although there is a gap between the surface of the printed circuit board 8 and the bottom portion 12 of the motor 1, the motor 1 itself is firmly fixed via the pedestal 3.

In this embodiment, a part of the motor case 15 is flatly formed to provide the bottom portion 12. However, even if the motor case 15 has a cylindrical shape, the substrate 8 can be formed by simply adjusting the shape of the pedestal. It has the advantage that it can be fixed on top. A configuration in which a bridge is provided between the two front and rear pedestals 3 is also possible.

Next, a third embodiment of the present invention will be described with reference to FIG. A part of the motor case 15 is flatly formed to form the bottom portion 12, and a pedestal 30 having substantially the same area as the bottom portion 12 is fixed to the bottom portion 12 by welding. Reference numeral 4 indicates a welded portion. The pedestal 30 is provided in advance with two standing claws 21 which are raised at a right angle from a punched hole 21 partially formed as a bent portion.

The upright pawl 21 is inserted into a predetermined hole of a board such as the printed board 8 to directly fix the motor 1.

Next, a fourth embodiment of the present invention will be described with reference to FIGS. In the third embodiment described above, the bottom portion 12 is provided by forming a part of the motor case 15 to be flat, but even if the motor case 15 has a cylindrical shape, the shape of the pedestal 31 can be simply adjusted to match the shape of the base 8 on the substrate 8. Can be fixed to. The shape of the pedestal 31 on the motor 1 side is changed to the motor case 1
5 and the shape of at least a part of the base 31 of the pedestal 31 is matched with the planar shape of the substrate. In the example shown in FIG. 6, a portion indicated by reference numeral 33 is a curved portion conforming to the cylindrical shape of the motor case 15, and a portion indicated by reference numeral 32 is a flat bottom portion conforming to the planar shape on the substrate side. The pin 2 is erected on the flat bottom portion 32. In the example shown in FIG. 7, the pedestal 31 is formed by integrally pressing the flat bottom portion 32 and the curved portion 33.

Next, FIG. 8 shows a fifth embodiment. The pedestal may be made of not only metal but also synthetic resin, ceramics, and the like. In this embodiment, the base 5 made of ceramics is fixed to the motor case 15 with an adhesive. The pin 2 is embedded when the pedestal 5 is fired.

Next, FIG. 9 shows a sixth embodiment. In this embodiment, the pedestal 50 made of synthetic resin is fixed to the motor case 15 with an adhesive. The pin 22 is embedded when the pedestal 50 is molded.

In the case of the present embodiment, the thickness of the pins 22 is the substrate 8
Although it does not fit into the component mounting hole 80, a mounting dedicated hole 81 is separately formed on the substrate 8 and the pin 22 is inserted and fixed therein.

Next, a seventh embodiment of the present invention will be described with reference to FIG. Up to now, the pins for board mounting have been pins 2 and 22.
Alternatively, it has been described as the upright nail 20. These are fixed by being soldered or folded back on the back side of the substrate. However, the pin 6 shown in FIG. 10 is characterized in that it has a check portion 60 at its tip. That is, the diameter of the pin 6 is almost equal to the size of the mounting hole of the substrate, but the diameter of the check portion 60 is set to be slightly larger than this. The pin 6 with the check part 60
Is erected on the pedestal 30 of the motor case 15.

That is, since the check portion 60 which is the check means for preventing the slip-off is provided, the motor 1 is mounted on the pedestal 30.
When the pin 6 of the pedestal 30 is inserted into the hole of the substrate with some force, the check portion 60 at the tip of the pin 6 is inserted.
It is securely fixed by and does not fall off the substrate.

Next, an eighth embodiment of the present invention will be described with reference to FIGS. 11 and 12. Up to now, the legs and the like have been described only for the function of attaching them to the substrate, but if the pins and the like are conductive, they can be used as wiring to the motor or as a ground line. Also, in the explanation so far,
The motor 1 has two plus and minus lead wires 11, and an example in which these are used for power supply is shown.
It is also possible to connect the negative lead wire to the motor case 15 for body grounding.

Therefore, in the eighth embodiment, the conductive plate 7 having an L-shaped vertical section is also provided at the inner corner of the base 7 having an L-shaped vertical section.
0 is embedded so that the surfaces thereof are aligned with each other, and the conductive pin 2 is connected to the conductive plate 70. On the other hand, motor 1
Is provided with one plus lead wire 13 and a minus contact point 14 protruding from the rear outer wall. Then, when the motor 1 is fixed to the pedestal 7, the minus contact point 14 becomes the conductive plate 7.
The ground line is secured through the pin 2 by touching 0.

In the motor equipped with the board mounting means of this embodiment, the ground line is secured at the same time by fixing the pin 2 of the ground line to the board by soldering. Therefore, the wiring of the motor 1 is the positive lead wire 13 It is characterized by the fact that it becomes only one and the mounting work becomes extremely easy.

Next, a ninth embodiment of the present invention will be described. In the above-described eighth embodiment, only one positive lead wire 13 is wired for power supply, but in the ninth embodiment, both the ground line and the plus line need not be wired.

That is, as shown in FIG. 13, two plus / minus print patterns are printed on the inside of the pedestal 7 having an L-shaped vertical section to form the print wirings 71 and 72, and the print wirings 71 and 72 are formed. The pins 2 and 2 each having conductivity are connected to 72. On the other hand, the motor 1 is provided with two contacts of positive and negative polarities which project from the outer wall of the rear portion (not shown).

When the motor 1 is fixed to the pedestal 7 and the motor having the board mounting means is completed, the plus
Two contacts of negative polarity are printed wiring 71, 7 respectively.
2 will be contacted and a power supply line will be secured via the pins 2 and 2. The wiring is designed so that positive and negative lines come in the holes on the printed circuit board into which the two pins 2 and 2 are inserted.

The plus and minus electrodes can be formed not by printed wiring but by insert-molding a conductive metal plate on the pedestal.

Since the present invention is not limited to the above-mentioned embodiments, for example, bolts or caulking pins may be used for the legs. When a pedestal is used, the shape and the like of the pedestal can be arbitrarily determined. The two or more legs may have different materials or shapes.

[0051]

As described above, the present invention is a motor having a board mounting means in which a part of the motor case is provided with a board mounting leg. Further, the motor is provided with a board mounting means characterized in that a pedestal is interposed between the motor case and the board mounting leg.

As a result, the motor can be directly mounted on a substrate such as a printed wiring board without using a motor holder that causes noise due to resonance, which facilitates manufacturing and improves workability of mounting. In addition, the cost is low, noise is not generated due to resonance and the motor does not drop off, and the intended purpose is achieved.

[Brief description of drawings]

FIG. 1 is a perspective view of a first embodiment of the present invention.

FIG. 2 is an explanatory view of a usage state of the embodiment.

FIG. 3 is a perspective view of a second embodiment of the present invention.

FIG. 4 is an explanatory view of a usage state of the embodiment.

FIG. 5 is a perspective view of a third embodiment of the present invention.

FIG. 6 is a front view of a fourth embodiment of the present invention.

FIG. 7 is a front view showing another example of the fourth embodiment of the present invention.

FIG. 8 is a partial sectional view of a fifth embodiment of the present invention.

FIG. 9 is a side view of the sixth embodiment of the present invention.

FIG. 10 is a partial side view of the seventh embodiment of the present invention.

FIG. 11 is a partial cross-sectional view of an eighth embodiment of the present invention.

FIG. 12 is a partially cutaway perspective view of the same embodiment.

FIG. 13 is a partial plan view of the ninth embodiment of the present invention.

FIG. 14 is a perspective view of a conventional example.

FIG. 15 is a side view of a conventional example.

[Explanation of symbols]

 1 Motor 10 Shaft 11 Lead Wire 12 Bottom 13 Positive Lead Wire 14 Negative Contact 15 Motor Case 2 Pin 20 Standing Claw 21 Draining Hole 22 Pin 3 Pedestal 30 Pedestal 31 Pedestal 32 Flat Bottom 33 Curved Part 4 Welding Section 5 Pedestal 6 Pin 60 Non-return part 7 Pedestal 70 Conductive plate 71 Printed wiring 72 Printed wiring

Claims (10)

[Claims] 1. A motor provided with a board mounting means in which a board mounting leg is provided on a part of a motor case. 2. A motor having board mounting means according to claim 1, wherein a pedestal is interposed between the motor case and the board mounting legs. 3. The pedestal is made of metal,
A motor comprising the board mounting means according to claim 2. 4. A motor having a substrate mounting means according to claim 2, wherein the pedestal is made of ceramics. 5. A motor having the board mounting means according to claim 2, wherein the pedestal is made of synthetic resin. 6. A motor having board mounting means according to claim 1, wherein the board mounting legs are made of solderable metal. 7. The board mounting means according to claim 1, wherein the tip of the board mounting leg is provided with a non-removable non-return means larger than the insertion hole of the board by a required dimension. Equipped motor. 8. A motor having board mounting means according to claim 1, wherein at least two legs for mounting the substrate are electrically conductive, and both poles of the motor are respectively wired to the two legs. . 9. A motor having a substrate mounting means according to claim 1, wherein at least one leg for mounting the substrate has conductivity and the body ground of the motor is wired to the leg. . 10. A ground line is formed on the pedestal, a contact means for the body ground of the motor is formed on a part of the ground line, and the other part has at least one conductivity for mounting on a board. A motor comprising the board mounting means according to claim 2, wherein the motor is wired to the legs.