JP2903124B2 - Motor coupling mechanism of air conditioner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mechanism for connecting a fan and a fan motor of an air conditioner.

[0002]

2. Description of the Related Art FIG. 6 is a perspective view showing a motor coupling mechanism of a conventional air conditioner disclosed in Japanese Patent Application No. 5-92780. In the figure, (1) is a main body of the air conditioner, (1a) is a piping space of the main body (1), (1b) is a holding portion of a fan motor (3) (described later) formed in the main body (1), (2) is a cross flow type blower having a cylindrical boss (2a) formed at an end face thereof, and the boss (2a) having a threaded hole (2b) therethrough.

[0003] A fan motor (3) has a shaft (3a) formed with a seat (3b) cut off along the shaft (3a) at the tip of the shaft (3a). (4) is a fixing screw screwed into the screw hole (2b) of the boss (2a), and (5) is a holder for fixing the fan motor (3) to the main body (1).

[0004] The motor coupling mechanism of the conventional air conditioner is constructed as described above, and the blower (2) and the fan motor (3) are mounted on a boss.
They are joined to each other at the portion (2a). That is, the blower (2)
Insert the tip of the shaft (3a) of the fan motor (3) into the boss (2a), align the screw hole (2b) with the seat surface (3b), and fasten with the fixing screw (4). At this time, when the shaft (3a) rotates and the screw hole (2b) does not match the bearing surface (3b), the shaft (3a) passing through the piping space (1b) is gripped with a finger and rotated. Screw holes visually (2b)
And the seating surface (3b).

[0005]

In the above-described motor coupling mechanism of the conventional air conditioner, when the blower (2) is coupled to the shaft (3a) of the fan motor (3), the shaft (3a) is connected to the shaft (3a). Since the screw hole (2b) is aligned by gripping, the length of the shaft (3a) must be a length that can be gripped by a finger.
Is likely to be large. Also, since the shaft (3a) becomes longer, the shaft
The eccentricity of (3a) becomes large, and abnormal vibration or the like is likely to occur in the blower (2).

When the length of the shaft (3a) is insufficient,
It is difficult to grip the shaft (3a) with a finger, which makes the work difficult.
Furthermore, the boss (2a) of the blower (2) and the fan motor
There is a problem that the shaft (3a) of (3) is fixed by oil, rust or the like and is difficult to remove.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems. The shaft length of the fan motor is shortened, the body of the air conditioner is made compact, and the work of connecting the fan and the fan motor and the work of removing the fan motor are facilitated. It is an object of the present invention to provide a motor coupling mechanism of an air conditioner that can perform the operation.

[0008]

According to a first aspect of the present invention, there is provided a motor coupling mechanism for an air conditioner in which an end surface of a shaft of a fan motor on a side opposite to a fan side (hereinafter referred to as the other end surface) is exposed from the fan motor. The female screw is formed on this end face .

A motor coupling mechanism for an air conditioner according to a second aspect of the present invention is the air conditioner of the first aspect , wherein a protrusion is formed instead of the female screw .

A motor coupling mechanism for an air conditioner according to a third aspect of the present invention is the motor coupling mechanism according to the second aspect of the invention, wherein the projecting body is provided with two seating surfaces facing in parallel with a plane including the axis thereof. .

[0011]

[Action] In the first aspect of the invention, since the formation of the other end surface TLR screw axis of the fan motor, fastened bolts or the like to the internal thread, by operating this, it is possible to rotate the shaft .

In the second aspect of the present invention, since the protrusion is formed on the end face of the shaft, the shaft can be rotated by engaging a tool with the protrusion.

In the third aspect of the present invention, since two parallel seating surfaces are formed on the protruding body, the shaft can be rotated by engaging a tool with the seating surfaces.

[0014]

[Embodiment 1] 1-3 are views showing a first shot to an embodiment of the light of the present invention, FIG. 1 is a fragmentary perspective view, FIG. 2 is a whole exploded perspective view of an air conditioner, FIG. 3 is a main portion of FIG. 2 It is an enlarged view, and the same parts as those of the conventional device are denoted by the same reference numerals (the same applies to the following embodiments).

In the figure, a blower (2) is housed in a main body (1), and a fan motor (3) is disposed close to an air path partition wall (1c) of the main body (1), The piping space (1a) of the conventional device does not exist. A seat (3b) is formed at one end of the shaft (3a) of the fan motor (3) as in the conventional device, and the other end is exposed at an end surface of the fan motor (3), and a hexagon wrench is fitted therein. A hexagonal groove (3c) is machined to form a recess operating section. (6) is a heat exchanger, (7) is a dew tray, (8) is a suction grill,
(9) is an upper decorative panel, (10) is a lower decorative panel, and (11) is a left decorative panel.

A procedure for connecting the blower (2) and the fan motor (3) in the motor connecting mechanism of the air conditioner configured as described above will be described. That is, the boss (2
One end of the shaft (3a) of the fan motor (3) is fitted into the hole of a). Next, a hexagon wrench is inserted into the hexagonal groove (3c) at the other end of the shaft (3a), and the shaft (3a) is rotated, so that the screw hole (2b) and the seat surface (3b) are aligned. After that, tighten the fixing screw (4) and fix the blower (2) and shaft (3a).
Concatenate.

Thus, the shaft (3) of the fan motor (3) is
Since the hexagon wrench is fitted into the hexagon groove (3c) provided at the other end of (a) to hold the shaft (3a), the fixing screw (4) can be positioned efficiently. Further, since the shaft (3a) is shortened, the main body (1) can be downsized, and the eccentricity of the shaft can be reduced to reduce abnormal vibration of the blower (2).
Further, since there is no portion protruding from the other end surface of the shaft (3a), it can be handled in the same manner as the fan motor (3) of the conventional device.
Hereinafter, the above effects are referred to as common effects.

Further, in addition to the above-mentioned common effects, a fixing screw
The fitting hole (not shown) for tightening in (4) is generally a hexagonal hole. Therefore, it is possible to use the fastening tool for the fixing screw (4) for rotating the shaft (3a), and it is possible to save labor for changing the tool .

Embodiment 2 FIG. Figure 4 is a partial perspective view showing a first shot to another embodiment of the light of the present invention, FIG. 4 (A) shaft end machining illustration, FIG. 4 (B) is a screw mounted state diagram with a cross bore . Note that FIG. 2 and FIG. 3 is also shared in Example 2. In this embodiment, a female screw (3
e) is processed, and a cross-recessed screw (13A), a slotted screw (13B), a hexagonal bolt (13C), a hexagonal bolt (13D) and the like are tightened. Then, the shaft (3a) is rotated using a Phillips screwdriver, a flathead screwdriver, a hexagon wrench, or the like.

In this embodiment, in addition to the above-mentioned common effects, there is no need to change the shaft end machining according to the working tool, and the operation can be performed by changing the screws and bolts (13A) to (13D) according to the tool. effective. Also, after the work is completed, by removing the screws and bolts (13A) to (13D), there is no protruding portion at the shaft end, so that the fan motor (3) of the conventional device can be handled in the same manner.

Embodiment 3 FIG. FIG. 5 is a perspective view showing a main part of an embodiment of the second and third aspects of the present invention. 2 and 3 are also used in the third embodiment. In this embodiment, the protrusion (3f) on the other end surface of the shaft (3a) is used.
The two bearing surfaces (3
h). The seat (3h) is gripped by a tool such as a spanner to rotate the shaft (3a).

In this embodiment, since a large torque load can be applied to the shaft (3a) with a tool such as a spanner,
Even when the boss (2a) and the shaft (3a) of (2) are fixed by oil, rust, or the like, there is an effect that the fixation can be released with a small force.

[0023]

In the first invention as described above the invention according to the present invention, since the forming the other end face twin-screw axis of the fan motor, fastened bolts or the like to the internal thread, by operating it, the shaft Rotation becomes possible, and there is no need to change the shaft end machining according to the work tool. Operation can be performed by changing screws, bolts, etc., according to the tool. In addition, by removing screws, bolts and the like after the work is completed, there is no protrusion at the shaft end portion, and there is an effect that it can be handled in the same manner as the fan motor of the conventional device.

In the second invention, a protruding body is provided on the end face of the shaft.
Since it is formed , if a tool is engaged with this protruding body, the shaft can be turned, and the shaft can be turned with a strong force.

According to the third aspect of the present invention, since two parallel seating surfaces are formed on the protruding body, if a tool is engaged with the seating surface, the shaft can be rotated, and the boss of the blower and the fan can be rotated. Even if the motor shaft is fixed by oil, rust, etc.
There is an effect that the fixation can be removed with a small force.

[Brief description of the drawings]

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

FIG. 2 is an overall exploded perspective view of the air conditioner showing the first embodiment of the present invention.

FIG. 3 is an enlarged view of a main part of FIG. 2;

FIG. 4 is a perspective view of a main part showing a second embodiment of the present invention, and FIG.
Is an explanatory diagram of shaft end processing, and (B) is a view showing a state in which a cross-recessed screw is mounted.

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

FIG. 6 is a perspective view showing a motor coupling mechanism of a conventional air conditioner .
FIG.

[Explanation of symbols]

2 Blower, 2a boss, 3 fan motor, 3a
Axis, 3 e female screw, 3f projecting member, 3 h seat surface.

Continuation of the front page (72) Inventor Masashi Yamada 3-181, Oka, Shizuoka-shi Mitsubishi Electric Engineering Co., Ltd. Nagoya Office Shizuoka branch (56) References JP-A-5-336701 (JP, A) JP-A-6-245429 (JP, A) JP-A-4-87547 (JP, A) JP-A-57-130014 (JP, U) JP-A-55-14192 (JP, U) (58) Fields investigated (Int.Cl. ⁶ , DB name) H02K 7/14 F24F 1/00 311

Claims (3)

(57) [Claims] 1. A mechanism in which a boss is provided at an end of a blower, and one end of a shaft of a fan motor is inserted into the boss and fixed with a screw, the other end of the shaft of the fan motor is exposed from the fan motor, Along the length of the shaft on this end face
A motor coupling mechanism for an air conditioner, wherein a female thread is formed . 2. A fan boss is provided at an end of the blower.
A mechanism that fits one end of the shaft of the motor into the boss and fixes it with screws
, The other end of the shaft of the fan motor
Exposed from the motor, this end face along the length of the shaft
A projection formed to engage with the tool.
Motor coupling mechanism for air conditioners. 3. The projecting body is paired in parallel with a plane including its axis.
3. A seat according to claim 2, wherein two facing surfaces are formed.
A motor coupling mechanism for the air conditioner according to the above.