CN201975869U - Motor and air-supply device therewith - Google Patents

Abstract

The utility model provides a motor and an air supply device using the motor. The motor includes: a stator (8) formed by winding coils (9) on a plurality of teeth (8a); the rotor; the connecting pin (11) electrically connecting the coil (9) to the circuit substrate (7); and the pin holder (10) fixing and holding the connecting pin (11) to the stator (8), and the pin holder (10) Including: a plurality of pin seat parts of the fixed pin (11); and an abutment part connecting the pin seat parts, at least a part of the abutment part of the pin retainer (10) is configured to: contact with the tooth part of the stator (8) ( 8a) The width (d2) of the opposite end surface is larger than the width (d1) of the end surface on the side away from the tooth portion (8) toward the outer peripheral direction of the stator (8), and a part of the coil (9) and the tooth portion (8a) The insulating films are wound in contact with each other, and the other part of the coil (9) sandwiches and winds the pin holder (10) between the coil (9) and the teeth (8a).

Description

Motor and air supply device using the same

technical field

The present invention relates to a motor used in a cooling device for a heating element such as a CPU mounted inside a case of an electronic device, and an air blower using the motor.

Background technique

As a conventional motor, there is a motor shown in (Patent Document 1). In the housing of the motor, a circuit board, a stator around which a coil is fixed, and a rotor surrounding the stator are provided in this order from the bottom side. The surface of the stator is subjected to chemical conversion treatment film treatment by electrodeposition coating or the like to form an insulating film on the surface of the stator, and a coil is wound around the teeth of the stator via the insulating film. By making the insulating layer thin in this way, the length of the coil to be wound can be shortened, and thus the efficiency of the motor can be improved.

Patent Document 1: Japanese Patent Laid-Open No. 2007-049891

Utility model content

However, in such a structure, it is very difficult to fix and hold and electrically connect the circuit board and the stator, compared to the case where the coil is wound on the stator via a resin insulator. That is, when an insulator is used, the pin-shaped connection terminal for fixing and holding and electrically connecting the circuit board and the stator is held by forming a holding portion on the insulator. However, when the surface of the stator is treated with a chemical conversion treatment film to form an insulating film on the surface of the stator, it is impossible to form a holding portion for the connection terminal between the stator and the insulating layer, and it is impossible to fix the circuit board and the stator as described above. Problems of retention and electrical connection.

Therefore, the present invention has been completed in view of the above-mentioned problems, and its object is to provide a motor and an air blower using the motor, even when a chemical conversion treatment film is applied to the surface of the stator to form an insulating film on the surface of the stator. The fixed holding and electrical connection of the stator and the circuit board can be easily performed while improving the efficiency of the motor.

Therefore, the present invention has been completed in order to solve the above-mentioned problems, and is characterized in that it includes: a stator formed by winding coils electrically connected to a circuit board around a plurality of teeth; a rotor provided on the outer periphery of the stator; A connection pin electrically connected to the above-mentioned circuit board; and a pin holder for fixing and holding the above-mentioned connection pin to the above-mentioned stator, and the above-mentioned pin holder is configured such that the width of the end surface opposite to the tooth portion of the above-mentioned stator is larger than that on the side away from the above-mentioned tooth portion. The width of the end surface increases toward the outer peripheral direction of the stator, and the pin holder is sandwiched by the coil and the teeth.

According to the above structure, the present invention has the effect that even when the surface of the stator is treated with a chemical conversion treatment film to form an insulating film on the surface of the stator, the stator and the circuit can be easily connected while improving the efficiency of the motor. Fixed holding and electrical connection of the substrate.

Description of drawings

Fig. 1 is an exploded view of the cooling device of this embodiment.

Fig. 2(a) is a view showing a stator mounted on the fan frame of the present embodiment, and Fig. 2(b) is a cross-sectional view along line A-A of Fig. 2(a).

Fig. 3 is an enlarged view of the stator of this embodiment.

FIG. 4 is a cross-sectional view along line B-B of FIG. 3 .

5 is a diagram showing the relationship among the stator, coils, and pin holders when the cross-sectional shape of the contact portion is rectangular.

Fig. 6 is a diagram showing the relationship between the stator, the coil and the pin holder of the present embodiment.

Fig. 7 is a diagram showing the relationship between a stator, a coil and a pin holder in another embodiment.

Fig. 8 is a diagram showing the relationship between a stator, a coil and a pin holder in another embodiment.

Fig. 9 is a diagram showing the relationship between a stator, a coil and a pin holder in another embodiment.

Symbol Description

1 cooling device

2 fan housings

3 exhaust ports

4 suction port

5 fan blades

6 shells

7 circuit substrate

8 stator

9 coils

10 pin holder

11 pins

Detailed ways

The invention described in the first aspect is a motor characterized by including: a stator in which a coil electrically connected to a circuit board is wound around a plurality of teeth, wherein the plurality of teeth are applied to the surface. There is an insulating film; a rotor arranged on the outer periphery of the above-mentioned stator; a connection pin electrically connecting the above-mentioned coil to the above-mentioned circuit substrate; a plurality of pin seat portions for fixing the pins between the adjacent tooth portions; At least a part of the portion is configured such that the width of the end surface facing the tooth portion of the stator becomes larger toward the outer peripheral direction of the stator than the width of the end surface away from the tooth portion, and a part of the coil is in contact with the insulating film of the tooth portion. The other part of the above-mentioned coil is wound in such a way that the above-mentioned pin holder is sandwiched between the above-mentioned coil and the above-mentioned teeth, even if the surface of the stator is treated with a chemical conversion treatment film to form an insulating film on the surface of the stator. Also, the fixed holding and electrical connection between the stator and the circuit board can be easily performed while improving the efficiency of the motor.

The invention described in the second aspect is an air blower characterized by comprising: a casing; a stator provided on the casing, a plurality of teeth wound with coils electrically connected to a circuit board, Wherein, an insulating film is applied to the surface of the plurality of teeth; a rotor is provided on the outer periphery of the stator and has fan blades; a connection pin electrically connects the coil to the circuit board; and the connection pin is fixed and held on the above-mentioned A pin holder for a stator, the pin holder includes: a plurality of pin seat portions for fixing the pins located between the adjacent teeth; The abutting portion of the seat portion connection, the abutting portion of the pin holder is configured such that the width of the end surface opposite to the tooth portion of the stator becomes larger toward the outer peripheral direction of the stator than the width of the end surface on the side away from the tooth portion, A part of the coil is wound in contact with the insulating film of the tooth part, and the other part of the coil is wound so that the pin holder is sandwiched between the coil and the tooth part, and chemical conversion is performed on the surface of the stator. Even when an insulating film is formed on the surface of the stator by the film treatment, the fixed holding and electrical connection between the stator and the circuit board can be easily performed while improving the efficiency of the motor. In addition, since the stator and the circuit board can be brought into close contact, the motor and the air blower using the motor can be reduced in thickness. In addition, by fixing the pin holder to the stator, the performance of starting the rotation of the rotor can be stabilized.

The invention described in the third aspect is a motor characterized by comprising: a stator in which a coil electrically connected to a circuit board is wound around a plurality of teeth; a pin; and a pin holder for fixing and holding the connection pin to the stator, the pin holder having an abutment portion provided between the tooth portion and the circuit board, at least a part of the abutment portion of the pin holder constitutes The width of the end surface opposite to the tooth portion of the stator is larger than the width of the end surface on the side away from the tooth portion toward the outer peripheral direction of the stator, and a part of the coil is formed by separating the pin holder from the coil and the tooth portion. Even if the surface of the stator is treated with a chemical conversion treatment film to form an insulating film on the surface of the stator, it is possible to easily fix the stator and the circuit board while improving the efficiency of the motor. remain well electrically connected.

The invention described in the fourth aspect is a motor characterized by including: a stator in which a coil electrically connected to a circuit board is wound around a plurality of teeth, wherein the plurality of teeth are applied to the surface. There is an insulating film; a rotor provided on the outer periphery of the above-mentioned stator; a connecting pin electrically connecting the above-mentioned coil to the above-mentioned circuit board; Even when an insulating film is formed on the surface of the stator by film processing, the fixed holding and electrical connection between the stator and the circuit board can be easily performed while improving the efficiency of the motor.

The invention described in the fifth aspect is the motor according to the fourth aspect, characterized in that: the pin holder is provided between the end surface facing the tooth portion of the stator and the end surface away from the tooth portion. The step is such that the pin holder is sandwiched between the coil and the teeth, and since the surface shape of the wound coil on the rotor side becomes gentle due to the inclination, it is possible to form a structure that is less likely to come into contact with the rotor. In addition, the number of coils in contact with the contact portion increases, and the force from the pin holder side toward the stator side for bringing the pin holder into close contact with the stator becomes larger.

The invention described in the sixth aspect is the motor according to the fifth aspect, characterized in that the whole of the end surface of the pin holder facing the teeth of the stator and the end surface on the side away from the teeth are opposite to each other. The end surface facing the teeth of the stator is inclined at 70 to 85 degrees, and since the surface shape of the wound coil on the rotor side is very gentle due to the inclination, it is possible to form a structure that hardly comes into contact with the rotor. In addition, the number of coils in contact with the abutting portion increases, and the force from the pin holder side toward the stator side to bring the pin holder and the stator into close contact becomes very large.

The invention described in the seventh aspect is the motor according to the fourth aspect, characterized in that: the pin holder is formed by forming a gap between an end surface of the pin holder opposite to the tooth portion of the stator and an end surface on the side away from the tooth portion. A portion is inclined, and the pin holder is sandwiched between the coil and the teeth, and since the surface shape of the wound coil on the rotor side becomes gentle due to the inclination, it is possible to form a structure that hardly comes into contact with the rotor. In addition, even if the inclination angle of the contact part is set to be large, the strength of the contact part can be maintained without making the whole contact part thin. In addition, since the portion where the coil can be wound becomes large, the efficiency of the motor can be improved.

The invention described in the eighth aspect is a motor according to the seventh aspect, characterized in that the pin holder is formed between the end surface facing the teeth of the stator and the end surface on the side away from the teeth, A part of the stator side is inclined forward, and since the surface shape of the rotor side of the wound coil becomes gentle due to the inclination, it is possible to form a structure that is less likely to come into contact with the rotor. In addition, even if the inclination angle of the contact part is set to be large, the entire contact part does not become thin-walled, and sufficient strength can be ensured. In addition, since the portion where the coil can be wound becomes large, the efficiency of the motor can be sufficiently improved.

The invention described in the ninth aspect is the motor according to the eighth aspect, characterized in that the pin holder is formed between the end surface facing the tooth portion of the stator and the end surface on the side away from the tooth portion, A part of the stator side is inclined at 0 to 60 degrees with respect to the end surface facing the tooth portion of the stator, and since the surface shape of the rotor side of the wound coil becomes gentle due to the inclination, it is possible to form a shape that is very difficult to contact with the rotor. Structure. In addition, even if the inclination angle of the contact part is set to be large, the entire contact part does not become thin-walled, and sufficient strength can be ensured. In addition, since the portion where the coil can be wound becomes large, the efficiency of the motor can be sufficiently improved.

The invention described in the tenth aspect is the electric motor according to the fourth aspect, characterized in that: the pin holder is provided between the end surface facing the tooth portion of the stator and the end surface away from the tooth portion. The step is such that the pin holder is sandwiched between the coil and the teeth, and a stronger force can be generated from the pin holder side toward the stator side to bring the pin holder and the stator into close contact.

The invention described in the eleventh aspect is the motor according to the fourth aspect, characterized in that a claw portion is provided on the end portion of the pin seat portion opposite to the end portion into which the connecting pin is inserted, and the contact pin The stator can be sandwiched between the contact portion and the claw portion, so that the pin holder can securely sandwich the stator.

The invention described in the twelfth aspect is the motor according to the fourth aspect, wherein the pin holder has a hole in the pin seat, and at least a part of the cross section of the connecting pin is smaller than that of the pin holder. The hole is large, the connection pin is press-fitted into the hole of the pin holder, and the pin holder and the connection pin can be firmly fixed by an easy method.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Example)

In this embodiment, a case where the motor of the present invention and an air blower using the motor are used for cooling heat-generating equipment will be described.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

Fig. 1 is an exploded view of a cooling device according to an embodiment of the present invention. As shown in FIG. 1 , the fan casing 2 of the cooling device 1 is composed of a fan frame 2 a located at the lower portion and a fan cover 2 b located at the upper portion thereof. Here, the fan frame 2a is integrally formed with a bottom surface and a side surface by resin molding, aluminum alloy die-casting, or the like. An exhaust port 3 for exhausting sucked air is provided on one side thereof, and a suction port 4 is provided on the bottom surface thereof. In addition, the fan cover 2b is formed into a plate shape by press molding or resin molding of a metal material such as aluminum or stainless steel, and a substantially circular suction port 4 for sucking air is provided at the center thereof.

Then, the fan blade 5 is arranged and housed so as to be sandwiched between the fan frame 2a and the fan cover 2b. When the fan blade 5 rotates at a high speed, air is sucked in from the suction port 4 provided at the center of the fan cover 2b and the suction port 4 provided at the bottom surface of the fan frame 2a. The air sucked in is changed in the centrifugal direction of the fan blade 5 inside the fan casing 2 by the rotational motion of the fan blade 5 . Therefore, most of the inhaled air hits the inner walls of the frame 2a and the cover 2b, and the air is transported along the inner walls in the same direction as the rotation direction of the fan blade 5 and discharged from the exhaust port 3.

Each arrangement of the cooling device 1 will be described in detail using FIG. 2 . FIG. 2( a ) is a diagram showing a stator mounted on the fan frame of this embodiment, and FIG. 2( b ) is a cross-sectional view taken along line A-A of FIG. 2( a ).

The cooling device 1 is provided with a casing 6 formed on the fan frame 2a. A circuit board 7 for controlling the cooling device 1 is arranged along the outer periphery of the casing 6 , and a stator 8 is arranged on the upper part to connect with the circuit board 7 .

A rotor is provided on the outer periphery of the stator 8 so as to cover the stator 8 , and the rotor is provided with the fan blades 5 .

As shown in FIG. 2 , a circuit board 7 and a stator 8 are sequentially arranged along the casing 6 from the bottom side of the fan frame 2 a , and a rotor magnet is provided on the inner periphery of the rotor. The fan blades 5 are rotated by the rotation of the rotor.

Here, the structure of the stator 8 and its surroundings, which are characteristic points, will be described in detail. FIG. 3 is an enlarged view of the stator of this embodiment, and FIG. 4 is a cross-sectional view taken along line B-B of FIG. 3 . 5 is a diagram showing the relationship between the stator, the coil, and the pin holder when the cross-sectional shape of the abutting portion is rectangular, and FIG. 6 is a diagram showing the relationship between the stator, the coil, and the pin holder in this embodiment. picture.

The stator 8 is formed by laminating metal plates made of a magnetic material in the axial direction of the rotating shaft, and a film-shaped insulating layer is formed on each tooth portion 8a by electrodeposition coating or the like, and a coil 9 is wound around the insulating layer. . By configuring the insulating layer in this way, the thickness of the insulating layer can be formed thin, and the length of the coil 9 to be wound can be shortened, so that the efficiency of the motor can be improved.

The stator 8 includes a pin holder 10 for holding a pin 11 serving as a connection pin for fixing the circuit board 7 . The pin holder 10 includes a pin seat portion 10a, an abutment portion 10b, and a claw portion 10c. The pins 11 are press-fitted from pin seat holes 10 d provided in the pin seat portions 10 a provided at the four corners of the pin holder 10 . The pin seat portions 10 a at the four corners are connected by contact portions 10 b that contact the circuit board 7 . In this embodiment, unevenness is provided on the circuit board 7 side of the contact portion 10b. By forming the unevenness in this way, a gap is created between the concave portion of the pin seat portion 10a and the contact portion 10b and the circuit board 7, and by winding the end of the coil 9 around the pin and soldering it in the gap, the coil can be easily formed. 9 to pin 11 connection. A claw portion 10c is provided on the fan cover 2b side of the pin seat portion 10a, and the stator 8 is sandwiched between the contact portion 10b and the claw portion 10c to fix the pin holder 10 and the stator 8 .

The material of the pin holder 10 is, for example, resin, but is not limited thereto. In this embodiment, the pin holder 10 is constituted by molded resin. In this embodiment, the length of the pin seat portions 10a in the direction of the rotation axis of the fan blade 5 is approximately 3 to 5 mm, and the length between the pin seat portions 10a, that is, the length of the abutting portion 10b is approximately 6 to 8 mm. In this embodiment, the heights of the four pin seat portions 10a and the lengths of the four contact portions 10b are respectively the same, but this is not necessarily the case.

In addition, the pin 11 is made of metal, and is subjected to plating treatment in this embodiment. The cross section is approximately square, with a side of 0.2 to 0.8 mm and a length of 4 to 5 mm. The diameter of the pin seat hole 10d is set to 0.5 mm, which is slightly smaller than the length of the diagonal line, for example, when the diagonal line of the cross section of the pin 11 is 0.55 mm, and the pin 11 is pressed into the pin seat hole 10 d to make the pin The retainer 10 is fixed firmly with the pin 11 . By winding the end of the coil 9 around the pin 11 to electrically connect and fix it to the pin 11, as shown in FIG. Electrical connection and fixation with the circuit board 7 are maintained. Wherein, the pin 11 is not press-fitted in one of the four pin seat holes 10d in FIG. 3 , but the pins 11 may be press-fitted in all the four pin seat holes 10d.

In addition, as shown in FIG. 4, it is characterized in that it includes: a stator 8 formed by winding a coil 9 electrically connected to a circuit board 7 around a plurality of teeth 8a; and a rotor provided on the outer periphery of the stator 8, and the coil 9 and the The circuit boards are electrically connected by connecting pins, and the stator 8 is equipped with a pin holder 10 that fixes and holds the connecting pins 11. The width d1 of the end surface of the coil is large, and the pin holder 10 is sandwiched by the coil 9 and the teeth 8a.

That is, the cross-sectional shape of the contact portion 10b is such that, for example, the surface in contact with the coil 9 is inclined 10e toward the case 6 side, and is not rectangular. As shown in FIG. 5 , when the cross-sectional shape of the abutting portion 110b is substantially rectangular, the force from the pin holder side to the stator side is caused by the coil by causing the pin holder to be in close contact with the tooth portion 108a of the stator. 109 does not work at all. Therefore, for example, when the distance between the contact portion 10 b and the claw portion 13 c is greater than the thickness of the stator 8 , the stator 8 may not be in close contact with the pin holder 10 . However, by inclining the surface in contact with the coil 9 toward the case 6 side as shown in FIG. force works. Therefore, even when, for example, the distance between the contact portion 10 b and the claw portion 13 c is greater than the thickness of the stator 8 , the coil 9 can firmly contact the stator 8 and the pin holder 10 . As a result, even when the surface of the stator 8 is treated with a chemical conversion treatment film to form an insulating film on the surface of the stator 8, the stator 8 and the circuit board 7 can be easily fixed and held while improving the efficiency of the motor. and electrical connections. In addition, since the stator 8 and the circuit board 7 can be brought into close contact, the thickness of the motor and the air blower using the motor can be reduced.

In addition, by fixing the pin holder 10 to the stator 8, the performance of starting the rotation of the rotor can be stabilized. That is, a Hall element (not shown) is mounted on the fan case side of the circuit board 7, and the Hall element generates an output voltage corresponding to the strength of the magnetic flux from the rotor magnet, and controls the rotation of the rotor by the voltage. Therefore, the stator 8 and the pin holder 10 are not firmly fixed, and when the stator 8 is far away from the circuit board 7 fixedly held by the pin 11 held in the pin holder 10, the rotor and the rotor magnet provided on the outer periphery of the stator 8 will be damaged. Also away from the circuit board 7 . As a result, the above-mentioned distance between the Hall element and the rotor magnet increases, making it difficult for the Hall element to detect the magnetic flux of the rotor magnet. However, in this embodiment, since the stator 8 and the circuit board 7 can be brought into close contact, the distance between the Hall element and the rotor magnet can be reduced and fixed. As a result, the Hall element can detect the magnetic flux of the rotor magnet satisfactorily, and the performance of starting the rotation of the rotor can be stabilized.

Furthermore, since the stator 8 and the circuit board 7 can be fixedly held by using the motor in the cooling device as described above, noise during rotation of the fan blade 5 can be suppressed.

As shown in FIG. 6 , when the height direction of the contact portion 10 b is inclined 10 e as a whole, the angle α is about 70 to 85 degrees, and is about 80 degrees in this embodiment. When the angle α is configured to be large, the force for bringing the stator 8 and the pin holder 10 into close contact increases, thereby enabling stronger fixation. In addition, when the angle α is set to be small, it is easy to configure the contact portion 10b in a thick state, so the strength of the contact portion 10b can be improved. In addition, the height of the contact part 10b is about 1.5 mm in this Example.

In this embodiment, the inclination 10e is provided entirely between the pin seat parts 10a of the contact part 10b, but it may be provided in a part between the pin seat parts 10a. The greater the inclination 10e between the pin seat portions 10a of the abutting portion 10b, the greater the force to make the stator 8 and the pin holder 10 stick closely, and the smaller the portion where the coil 9 can be wound becomes larger, so the motor can be efficiency improvement.

In addition, by providing the inclination 10e of the contact portion 10b of the pin holder 10 on the entire contact portion 10b from the end portion on the stator 8 side to the end portion on the circuit board 7 side, the coil 9 in contact with the contact portion 10b As the number increases, the force from the side of the pin holder 10 toward the side of the stator 8 that brings the pin holder 10 into close contact with the stator 8 becomes larger.

However, the claw portion 10c is not necessarily required. That is, it is sufficient to sufficiently fix the stator 8 and the pin holder 10 with the inclination 10e of the abutting portion 10b and the coil.

Next, other examples will be described.

7 to 9 are diagrams showing the relationship among stators, coils, and pin holders of other embodiments, respectively.

In FIG. 7, the inclination 10e of the abutting portion 10b of the pin holder 10 is not provided on the whole of the abutting portion 10b from the stator side end to the circuit board 7 side end, but is provided only on the abutting portion 10b. Stator 8 sides. Therefore, the circuit board 7 side of the contact part 10b is not inclined. With such a configuration, even if the inclination angle β of the contact portion 10b is set small, the strength of the contact portion 10b can be maintained without making the entire contact portion 10b thin. In addition, since the portion where the coil 9 can be wound becomes large, the efficiency of the motor can be improved. Furthermore, by setting the inclination angle β of the contact portion 10b large, the force from the side of the pin holder 10 toward the side of the stator 8 for bringing the pin holder 10 into close contact with the stator 8 becomes larger. When the inclination 10e is provided only on the stator 8 side of the contact portion 10b, the inclination angle β of the contact portion 10b can be set to 0 to 60 degrees. In the case where the inclination angle β is 0 degrees, it becomes a step shape as shown in FIG. 9 . In this embodiment, the inclination angle β of the contact portion 10b is set to about 40 degrees. Moreover, the inclination 10e is formed in the part of 1/3 or less of the stator 8 side in the contact part 10b.

In addition, as shown in FIG. 8 , instead of providing the inclination 10 e of the abutting portion 10 b of the pin holder 10 on the whole of the abutting portion 10 b from the stator side end to the circuit board 7 side end, only It is provided on the circuit board 7 side of the abutting portion 10b, and the stator 8 side of the abutting portion 10b is not inclined.

The inclination 10e is provided on the abutting portion 10 as described above to generate a force from the side of the pin holder 10 toward the side of the stator 8 that causes the pin holder 10 to be in close contact with the stator 8, so that the surface of the wound coil 9 on the rotor side Since the shape is gentle due to the inclination 10e, it is possible to form a structure that hardly comes into contact with the rotor.

Furthermore, the abutting portion 10b does not necessarily have to be inclined 10e, and the cross-sectional shape of the abutting portion 10b of the pin holder 10 may be formed as a step 10f as shown in FIG. 9 . By making the formation position of the step 10f in the rotation axis direction of the fan blade 5 on the stator 8 side, the portion where the coil 9 can be wound becomes large, so that the efficiency of the motor can be improved, and the contact portion 10b can be formed on the circuit board 7 side. I improve strength for a thick state. However, in this embodiment, the step 10f is formed in a part below 1/3 of the stator 8 side in the contact portion 10b. By providing the step 10 f in the contact portion 10 , a stronger force can be generated from the side of the pin holder 10 toward the side of the stator 8 to bring the pin holder 10 and the stator 8 into close contact.

However, in all the embodiments, regardless of the shape of the abutting portion 10b, positioning of the pin seat portion 10a may be formed, for example, on one of the metal plates made of a magnetic material constituting the stator 8 on the circuit board 7 side. used through-holes. By forming the positioning hole of the pin seat part 10a in the stator 8 in this way, the positioning of the pin holder 10 can be performed easily. In addition, when a hole for positioning is formed on the stator and a step 10f is provided on the abutting portion 10b, the formation position of the step 10f is formed at the same height as the surface of the circuit board 7 side of the stator, so that there is no problem caused by the step 10f. On the other hand, by reducing the portion where the coil 9 can be wound, the efficiency of the motor can be improved.

All the inclination 10e and step 10f provided in the contact part 10b may be the whole or a part between the pin seat part 10a. The greater the inclination between the pin seat portions 10a of the abutting portion 10b, the greater the force to make the stator 8 and the pin holder 10 stick together, and the smaller the portion where the coil 9 can be wound becomes larger, so the motor can be made larger. efficiency improvement.

As described above, a motor is formed, which is characterized by comprising: a stator formed by winding coils electrically connected to a circuit substrate on a plurality of teeth, wherein an insulating film is applied on the surface of the plurality of teeth; A rotor provided on the outer periphery of the stator; a connection pin electrically connecting the coil to the circuit board; and a pin holder for fixing and holding the connection pin to the stator, and the pin holder includes: A plurality of pin seat parts for fixing the above-mentioned pins between the parts; and an abutment part provided between the above-mentioned tooth part and the above-mentioned circuit board and connecting the above-mentioned pin seat parts, the abutment part of the above-mentioned pin holder is constituted as follows: The width of the end surface facing the tooth portion of the stator is larger than the width of the end surface away from the tooth portion toward the outer peripheral direction of the stator, and a part of the coil is wound in contact with the insulating film of the tooth portion, and the coil The other part is wound so that the said pin holder is sandwiched between the said coil and the said tooth part, and the following effect can be acquired.

That is, even when an insulating film is formed on the surface of the stator by applying a chemical conversion treatment film to the surface of the stator, the fixed holding and electrical connection between the stator and the circuit board can be easily performed while improving the efficiency of the motor.

That is, when an insulator is used as the insulating layer, the circuit board and the stator are fixedly held and electrically connected by the insulator. However, the coil must be wound on an insulator provided around the teeth, resulting in a long length of the wound coil.

On the other hand, when the surface of the stator is treated with a chemical conversion treatment film to form an insulating film on the surface of the stator, the length of the coil to be wound is shortened corresponding to the part where the insulator is no longer needed, and the efficiency of the motor can be improved. In addition, since the insulator is not used in the present invention, the fixed holding and electrical connection of the circuit board and the stator are performed by the pin and the pin holder. At this time, in order to securely fix the pin holder to the tooth portion, the abutment portion of the pin holder is configured such that the width of the end surface opposite to the tooth portion of the stator is wider than the width of the end surface on the side away from the tooth portion toward the stator. The outer peripheral direction becomes larger, and a part of the coil is wound in contact with the insulating film of the tooth part, and the other part is wound with the pin holder sandwiched between the coil and the tooth part.

With such a structure, the length of the coil wound around the teeth can be shortened while firmly fixing the pin holder to the teeth to perform fixed holding and electrical connection between the stator and the circuit board. That is, even when an insulating film is formed on the surface of the stator by applying a chemical conversion treatment film to the surface of the stator, the fixed holding and electrical connection between the stator and the circuit board can be easily performed while improving the efficiency of the motor.

As described above, a motor includes: a stator 8 formed by winding coils 9 electrically connected to a circuit board 7 on a plurality of teeth with an insulating film applied to the surface; a rotor provided on the outer periphery of the stator 8; The connection pin 11 that electrically connects the coil 9 and the circuit board 7; and the pin holder 10 that fixes the connection pin 11 to the stator 8, and the pin holder 10 includes: a plurality of pin seat parts; and an abutment part provided between the tooth part and the circuit board 7 and connecting the pin seat parts, at least a part of the abutment part of the pin holder 10 is configured as: opposing to the tooth part of the stator 8 The width of the end surface is larger than the width of the end surface on the side away from the tooth portion toward the outer peripheral direction of the stator 8, a part of the coil 9 is wound in contact with the insulating film of the tooth portion, and the other part of the coil 9 is formed by holding the pin holder 10 by The coil 9 is wound in such a way that the teeth are sandwiched, even if the surface of the stator 8 is treated with a chemical conversion treatment film to form an insulating film on the surface of the stator 8, it can be easily achieved while improving the efficiency of the motor. Fixed holding and electrical connection of the stator 8 and the circuit board 7 are performed.

In addition, an air supply device includes: a casing; a stator 8 formed by winding a coil 9 electrically connected to a circuit board 7 on a plurality of tooth parts provided with an insulating film on the surface of the casing; 8 and a rotor provided with fan blades 5; connecting pins 11 electrically connecting the coil 9 to the circuit board 7; and pin holders 10 fixing the connecting pins 11 to the stator 8. A plurality of pin seat portions for fixing pins between adjacent tooth portions; and an abutment portion provided between the tooth portions and the circuit board 7 and connecting the pin seat portions, the abutment portion of the pin holder 10 is constituted as : The width of the end surface opposite to the tooth portion of the stator 8 is larger than the width of the end surface on the side away from the tooth portion toward the outer peripheral direction of the stator 8, and a part of the coil 9 is wound in contact with the insulating film of the tooth portion. The other part is wound in such a way that the pin holder 10 is sandwiched between the coil 9 and the teeth, and even if the surface of the stator 8 is treated with a chemical conversion treatment film to form an insulating film on the surface of the stator 8, it is possible to make the motor The fixed holding and electrical connection of the stator 8 and the circuit board 7 are easily performed in a state where the efficiency is improved. In addition, since the stator 8 and the circuit board 7 can be brought into close contact, the thickness of the motor and the air blower using the motor can be reduced. In addition, by fixing the pin holder 10 to the stator 8, the performance of starting the rotation of the rotor can be stabilized.

In addition, a motor includes: a stator 8 formed by winding a coil 9 electrically connected to a circuit board 7 around a plurality of teeth; a connecting pin 11 electrically connecting the coil 9 to the circuit board 7; and connecting the connecting pin 11. The pin holder 10 fixedly held on the stator 8 has a contact portion provided between the tooth portion and the circuit board 7, and at least a part of the contact portion is configured as an end surface opposite to the tooth portion of the stator 8. The width of the coil 9 becomes larger than the width of the end surface on the side away from the tooth portion toward the outer peripheral direction of the stator 8, and a part of the coil 9 is wound in such a way that the pin holder 10 is sandwiched by the coil 9 and the tooth portion, even on the surface of the stator 8 Even when an insulating film is formed on the surface of the stator 8 by performing chemical conversion treatment, the fixed holding and electrical connection between the stator 8 and the circuit board 7 can be easily performed while improving the efficiency of the motor.

In addition, a motor includes: a stator 8 formed by winding coils 9 electrically connected to a circuit board 7 on a plurality of teeth with an insulating film applied to the surface; a rotor provided on the outer periphery of the stator 8; The connection pin 11 electrically connected to the circuit board 7; and the pin holder 10 for fixing and holding the connection pin 11 to the stator 8, even if the surface of the stator 8 is treated with a chemical conversion treatment film to form an insulating film on the surface of the stator 8 Therefore, the fixed holding and electrical connection of the stator 8 and the circuit board 7 can also be easily performed in a state where the efficiency of the motor is improved.

In addition, a motor in which the pin holder 10 is sandwiched by the coil 9 and the teeth by providing a step between the end face of the pin holder 10 opposite to the teeth of the stator 8 and the end face away from the teeth, since The surface shape of the wound coil 9 on the rotor side becomes gentle due to inclination, so that it can form a structure that is less likely to come into contact with the rotor. In addition, the number of coils 9 in contact with the abutting portion increases, and the force from the side of the pin holder 10 toward the side of the stator 8 for bringing the pin holder 10 into close contact with the stator 8 increases.

In addition, a motor in which the whole between the end surface of the pin holder 10 opposite to the tooth portion of the stator 8 and the end surface on the side away from the tooth portion is inclined at 70 to 85 degrees with respect to the end surface opposite to the tooth portion of the stator 8 Since the surface shape of the wound coil 9 on the rotor side becomes very gentle due to the inclination, it is possible to form a structure that hardly comes into contact with the rotor. In addition, there are enough coils 9 in contact with the abutting portion, and the force from the side of the pin holder 10 toward the side of the stator 8 to bring the pin holder 10 into close contact with the stator 8 becomes very large.

In addition, a motor in which the pin holder 10 is sandwiched by the coil 9 and the teeth by inclining a portion between the end face of the pin holder 10 opposite to the teeth of the stator 8 and the end face on the side away from the teeth, Since the surface shape of the wound coil 9 on the rotor side becomes gentle due to inclination, it is possible to form a structure that is less likely to come into contact with the rotor. In addition, even if the inclination angle of the contact part is set to be large, the strength of the contact part can be ensured without making the whole contact part thin. In addition, since the portion where the coil 9 can be wound becomes large, the efficiency of the motor can be improved.

In addition, a motor in which a part of the pin holder 10 on the side of the stator 8 between the end surface opposite to the teeth of the stator 8 and the end surface on the side away from the teeth is tilted forward, since the rotor side of the wound coil 9 The surface shape becomes gentle due to inclination, so it can form a structure that is difficult to contact with the rotor. In addition, even if the inclination angle of the contact part is set to be large, the entire contact part does not become thin-walled, and sufficient strength can be ensured. In addition, since the portion where the coil 9 can be wound becomes large, the efficiency of the motor can be improved.

In addition, a motor in which a part of the pin holder 10 on the side of the stator 8 between the end surface opposite to the tooth portion of the stator 8 and the end surface on the side away from the tooth portion is formed in an angle with respect to the end surface opposite to the tooth portion of the stator 8 The inclination is 0 to 60 degrees, and since the surface shape of the wound coil 9 on the rotor side becomes gentle due to the inclination, it is possible to form a structure that is very difficult to contact with the rotor. In addition, even if the inclination angle of the contact part is set to be large, the entire contact part does not become thin-walled, and sufficient strength can be ensured. In addition, since the portion where the coil 9 can be wound becomes large, the efficiency of the motor can be sufficiently improved.

In addition, a motor is capable of sandwiching the pin holder 10 by the coil 9 and the teeth by providing a step between the end face of the pin holder 10 opposite to the teeth of the stator 8 and the end face away from the teeth. A stronger force is generated from the side of the pin holder 10 toward the side of the stator 8 to bring the pin holder 10 into close contact with the stator 8 .

In addition, in a motor, a claw portion is provided at the end portion of the pin seat portion opposite to the end portion where the connecting pin 11 is inserted, and the stator 8 is sandwiched by the abutment portion and the claw portion, so that the pin holder 10 can reliably Clip the stator 8 in.

In addition, a motor in which the pin holder 10 has a hole in the pin seat, at least a part of the cross section of the connecting pin 11 is larger than the hole of the pin holder 10, and the connecting pin 11 is pressed into the hole of the pin holder 10 , the pin holder 10 and the connecting pin 11 can be fixed firmly with an easy method.

Industrial availability

According to the air blower of this invention, it can be applied as an air blower which cools electronic equipment, such as a notebook PC, for example.

Claims (12)

1. A motor, characterized in that, comprising: The stator is formed by winding a coil electrically connected to the circuit substrate on a plurality of teeth, wherein an insulating film is applied to the surface of the plurality of teeth; a rotor disposed on the outer periphery of the stator; connection pins electrically connecting the coil with the circuit substrate; and fixedly retaining the connecting pin to a pin holder of the stator, The pin holder includes: a plurality of pin seat portions for fixing the pins between the adjacent teeth; the abutment of the seat connection, At least a part of the abutting portion of the pin holder is configured such that a width of an end surface facing a tooth portion of the stator becomes larger toward an outer peripheral direction of the stator than a width of an end surface on a side away from the tooth portion, A part of the coil is wound in contact with the insulating film of the tooth part, and the other part of the coil is wound so that the pin holder is sandwiched between the coil and the tooth part. 2. An air supply device, characterized in that, comprising: case; The stator is arranged on the housing and is formed by winding coils electrically connected to the circuit substrate on a plurality of teeth, wherein an insulating film is applied on the surface of the plurality of teeth; a rotor disposed on the outer periphery of the stator and provided with fan blades; connection pins electrically connecting the coil with the circuit substrate; and fixedly retaining the connecting pin to a pin holder of the stator, The pin holder includes: a plurality of pin seat portions for fixing the pins between the adjacent teeth; the abutment of the seat connection, The abutting portion of the pin holder is configured such that a width of an end surface facing the teeth of the stator becomes larger toward an outer peripheral direction of the stator than a width of an end surface on a side away from the teeth, A part of the coil is wound in contact with the insulating film of the tooth part, and the other part of the coil is wound so that the pin holder is sandwiched between the coil and the tooth part. 3. A motor, characterized in that, comprising: A stator in which a coil electrically connected to a circuit board is wound around a plurality of teeth; connection pins electrically connecting the coil with the circuit substrate; and fixedly retaining the connecting pin to a pin holder of the stator, The pin holder has an abutting portion provided between the tooth portion and the circuit board, At least a part of the abutting portion is configured such that a width of an end surface facing the teeth of the stator becomes larger toward an outer peripheral direction of the stator than a width of an end surface away from the teeth, A part of the coil is wound so as to sandwich the pin holder between the coil and the teeth. 4. A motor, characterized in that, comprising: The stator is formed by winding a coil electrically connected to the circuit substrate on a plurality of teeth, wherein an insulating film is applied to the surface of the plurality of teeth; a rotor disposed on the outer periphery of the stator; connection pins electrically connecting the coil with the circuit substrate; and The connecting pin is fixedly held to a pin holder of the stator. 5. The motor according to claim 4, characterized in that: The pin holder is configured as an overall inclination between the end face opposite to the teeth of the stator and the end face away from the teeth, and the pin holder is sandwiched by the coil and the teeth. . 6. The motor according to claim 5, characterized in that: The whole between the end surface facing the teeth of the stator and the end surface away from the teeth of the pin holder is inclined at 70 to 85 degrees with respect to the end surface opposite the teeth of the stator. 7. The motor according to claim 4, characterized in that: The pin holder is clamped by the coil and the teeth by inclining a portion between the end face of the pin holder opposite to the teeth of the stator and the end face on the side away from the teeth. enter. 8. The motor according to claim 7, characterized in that: A portion of the pin holder on the stator side between an end surface facing the teeth of the stator and an end surface on a side away from the teeth is inclined forward. 9. The motor according to claim 8, characterized in that: A portion of the pin holder on the stator side between an end surface opposite to the teeth of the stator and an end surface on a side away from the teeth is formed in an angle with respect to an end surface opposite to the teeth of the stator. 0~60 degree tilt. 10. The motor according to claim 4, characterized in that: By providing a step between the end surface of the pin holder opposite to the teeth of the stator and the end surface on the side away from the teeth, the pin holder is sandwiched by the coil and the teeth. . 11. The motor according to claim 4, characterized in that: A claw portion is provided at an end portion of the pin seat portion opposite to an end portion into which the connecting pin is inserted, and the stator is sandwiched between the contact portion and the claw portion. 12. The motor according to claim 4, characterized in that: The pin holder has a hole in the pin seat, at least a part of the cross-section of the connecting pin is larger than the hole portion of the pin holder, The connection pin is pressed into the hole portion of the pin holder.

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