JPH0357110Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a blower motor installed to rotate a blower blade, and more particularly to a blower motor having a structure covered by a cylindrical container-shaped frame.

[Technical background of the invention]

BACKGROUND ART Conventionally, a motor used in a blower, for example, an electric fan, is generally located at the head of the electric fan and rotates a blower blade. In recent years, however, in motors for blowers such as electric fans,
There are some that are covered with a frame formed into a cylindrical container shape by pressing an iron plate, etc., and in this case, it is connected to an operating part such as an internal coil and an air volume selector switch. The external lead wires are connected by soldering, the connected portion is covered with an insulating tube and tied to the coil with thread, and then the stator core is inserted into the frame while the lead wires are brought out through a small hole formed in the frame. It's like a press fit.

[Problems with background technology]

In the case of the conventional type mentioned above, soldering for connecting the internal coils and external lead wires must be done by holding each pair of coil ends and lead wires in each hand before press-fitting the stator core into the frame. This is troublesome and requires the trouble of subsequently covering the connecting portion with an insulating tube and tying it to the coil with a thread, resulting in poor workability and high costs. Furthermore, after the connection, the folded lead wire for press-fitting the stator core into the frame must be pulled out from the aforementioned small hole at the same time, which is not only more troublesome, but also causes the folded lead wire to be pinched. In some cases, the stator core cannot be press-fitted or the lead wires are damaged.In addition, in order to avoid this, the lead wires are pulled too quickly and too strongly, which may cause the lead wires to come off the connection. Otherwise, there was a problem that the wire could be disconnected.

[Purpose of invention]

The present invention was developed in view of the above-mentioned circumstances, and its purpose is to improve the workability of connecting and assembling the internal coil and external lead wire, and to securely protect the lead wire. Additionally, it is an object of the present invention to provide a blower motor that can be protected from damage caused by solder waste.

[Summary of the idea]

The present invention has an opening formed in the upper part of the frame, and a solderable connection terminal protruding from the connection base facing the opening for connecting an external lead wire to an internal coil. A connecting part is provided, and a tray part is provided below the soldering part of the connecting part to receive solder waste, so that the lead wire can be connected by simply soldering to the connecting terminal. It is characterized in that it can be easily made in a fixed form, and that it can be made in such a way that the solder chips that break off do not enter the inside of the motor.

[Example of idea]

An embodiment in which the present invention is applied to an electric fan motor will be described below with reference to the drawings. First, in Fig. 2, 1 is the entire base of the electric fan, 2 is the head, 3 is the blower blade, 4 is guard. Next, in FIG. 1, reference numeral 5 denotes a cover of the head 2, in which a motor 6 is disposed together with a reduction gear mechanism 7, a swinging mechanism 8, etc. Specifically, the motor 6 includes a stator 9, a rotor 10, etc., housed in a cylindrical container-shaped frame 11 consisting of a front frame 11a and a rear frame 11b.
The rotary shaft 12 protrudes from the front and rear of the frame 11, and its rear end is located inside the reduction gear mechanism 7, and its front end is located outside the cover 5 to which the blower blade 3 is attached. The blower blade 3 is driven to rotate. Here, the frame 11 of the motor 6 is made by pressing both the front frame 11a and the rear frame 11b of iron plates, etc., and the folds, especially the upper part of the rear frame 11b, are as shown in FIG. A wide rectangular opening 13 is formed from the peripheral side surface to the end surface. Reference numeral 14 denotes a connection section provided facing the opening 13, and this also includes a terminal block 15 in the form of a fan-shaped plate.
and a required number of connecting terminals 16, each of which has its base embedded and implanted therein. Among these, the terminal block 15 connects the pin portion 15a (see FIG. 1) protruding from the back side of the terminal block 15 to the core of the stator 9. The coils 9b of the stator 9, which are internal coils (not shown), are connected to the connecting terminals 16, respectively. Reference numeral 17 denotes a lead wire set table, on its outer periphery, a required number of recesses 18 are formed, in accordance with the number of connection terminals 16, in other words, the number of lead wires to be described later, into which the lead wires are fitted and held; It has pin portions 19 on both sides, and the pin portions 19 are inserted into the holes 20 of the terminal block 15 and fixed. Further, reference numeral 21 designates a receiving tray portion integrally molded with the lead wire set table 17 and attached in the moving direction, and is located below the 16 rows of connection terminals which are the soldering portions of the connection portion 14, and its both side edges have rising shapes. It has ribs 22 of.
Further, a solder waste scraping hole 23 is formed in the lower part of the lead wire set table 17. Reference numeral 24 denotes external lead wires, and one end of each of these is inserted into the lead wire setting table 17 in the opening 13 of the frame 11.
The connection terminals 16 are connected by soldering 25 while fitting into the recesses 18 of the base 1, respectively, and the other ends are connected to the base 1.
It is also connected by soldering or the like to an operating section 26 provided with an air volume changeover switch, a timer, etc.

Now, in the case of the above configuration, the soldering 25 for connecting the lead wire 24 to the connecting terminal 16 and thus the stator coil 9b can be performed through the opening 13 of the frame 11 where the connecting terminal 16 faces. Also, since this can be done on the connection part 14 fixed to the motor 6, there is no need to worry about having to hold each pair of the end of the coil 9b and the lead wire 24 in each hand and solder them 25. Even after further connection, the connection part 14
Since the insulation is sufficiently planned and supported, there is no need to worry about tying the coil to a conventional coil, and the trouble of installing an insulating tube and its installation can be eliminated, resulting in a significant improvement in workability. Mechanical automation can be achieved. Moreover, in the case of the above structure, there is no need to pull out the lead wires 24 from inside the frame 11 after the connection work, and the stator core 9 is inserted into the frame 11 along with the pulling out work.
Since the stator core 9a can be press-fitted independently without the need for troublesome and difficult work such as press-fitting the stator core 9a, the work can be further simplified, and this can also be automated by a machine. Furthermore, as described above, the stator core 9 is attached to the frame 11.
Since the press-fitting of the lead wire a can be carried out independently without pulling out the lead wire 24, there is no possibility of the lead wire 24 being pinched between the frame 11 and the stator core 9a and being damaged. Since the lead wire 24 is not pulled, it is possible to prevent problems such as the lead wire 24 coming off from the connecting portion 14 or breaking the wire, and the lead wire 24 can be reliably protected. In addition, in the case of the above structure, the solder 25 scraps that fall off when the solder 25 is attached can be received by the tray part 21 and prevented from entering the inside of the motor 6. It is also possible to prevent problems such as the air becoming clogged in the gap between the coils and interfering with the rotation of the motor 6, or getting between the coil 9b and the frame 11 and impairing the insulation properties.

In particular, in the case of the above embodiment, by forming the solder scrap scraping hole 23 in the lower part of the lead wire set table 17, there is an advantage that the solder scraps received in the receiving tray part 21 can be scraped out from the solder scrap scraping hole 23. However, this is not necessarily necessary, and therefore the solder waste removal hole 23 only needs to be provided if it is necessary.

In addition, the present invention is not limited to the embodiments described above and shown in the drawings, and in particular, the tray portion 21 is connected not to the lead wire set block 17 but to the terminal block 15.
They may be integrally molded with each other, or may be provided independently without being integrally molded with either of them, and may be modified as appropriate without departing from the spirit of the invention.

[Effect of idea]

As is clear from the above, the present invention relates to a blower motor that is covered by a cylindrical container-shaped frame and is installed to rotate a blower blade, and in which an opening is formed in the upper part of the frame. A connection part is provided that faces the opening and has a solderable connection terminal protruding from the connection base for connecting an external lead wire to the internal coil, and a position below the soldering part of the connection part. The device is characterized by having a tray portion for receiving solder waste, which improves the workability of connecting and assembling the internal coil and external lead wire, and ensures reliable protection of the lead wire. Moreover, it has excellent effects such as being able to protect from damage caused by solder waste.

[Brief explanation of the drawing]

The drawings show an embodiment in which the present invention is applied to an electric fan motor. Fig. 1 is an enlarged longitudinal sectional side view of the head of the electric fan where the motor is located, Fig. 2 is a schematic side view of the entire electric fan, and Fig. 3 is a schematic side view of the entire electric fan. FIG. 2 is an enlarged perspective view of the motor section. In the figure, 3 is a blower blade, 6 is a motor, 9b is a stator coil (internal coil), 11 is a frame,
11b is a rear frame, 13 is an opening, 14 is a connecting portion, 15 is a terminal block, 16 is a connecting terminal, 21 is a saucer, 24 is a lead wire, and 25 is solder.

Claims (1)

[Scope of utility model registration request] It is covered by a frame 11 in the shape of a cylindrical container and is provided to rotate the blowing blade 3. An opening 13 is formed in the upper part of the frame 11, and an internal coil 9b is formed facing the opening 13. A connecting portion 14 is provided for connecting an external lead wire 24 to the terminal block 1.
5, and the coil 9b implanted in this terminal block 15.
solder 25 for connecting the lead wire 24 to
a lead wire set base 17 that is attached to the terminal block 15 and has a recess 18 in which the lead wire 24 is fitted and held at the outer periphery; 1. A blower motor comprising a wire set table 17 and a saucer portion 21 attached in the axial direction.