JPH0548562U - Fan motor fixing device - Google Patents

Abstract

(57) [Summary] [Purpose] The purpose is to prevent the fan motor main body from rotating due to the anti-torque associated with the motor drive by using a vibration proof rubber that absorbs the vibration of the motor. [Composition] Both front and rear fixtures 31 and 32 for fixing the fan motor main body 25 to the fan casing, and front and rear anti-vibration rubbers 33 arranged between the fixture and the front and rear brackets 23 and 24 of the fan motor main body. 34 and the fan motor fixing device 30.
A groove portion 48 into which the two are fitted and a detent portion 49 that engages with the fan motor main body are provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a fan motor fixing device in a blower for air circulation.

[0002]

[Prior Art]

 Japanese Utility Model Publication No. 59-6225, which precedes the present invention, discloses a heat insulation box body which is fixed to an inner box and an outer box of a heat insulation box with a fan and a fan motor as main components being assembled. Has been done. More specifically, the vibration isolation rubber is attached to the front bracket of the fan motor while the vibration isolation rubber is attached to the rear bracket, and the motor is fixed by sandwiching the fan motor with the fixing plate and the fan motor mounting plate. It is shown. The anti-vibration rubber is for absorbing the vibration of the motor itself generated when the fan motor is rotated and preventing the vibration from being transmitted to the fixed plate or the mounting plate.

[0003]

[Problems to be solved by the device]

 In the above publication, the front anti-vibration rubber is located between the rear plate and the front bracket and is only sandwiched between them, and the anti-vibration rubber rotates when the anti-torque of the motor is applied to the anti-vibration rubber. No detent means for regulating the are shown. For this reason, it is necessary to separately provide an anti-vibration rubber anti-rotation device, resulting in an increase in the number of parts, an increase in the number of work steps, and an increase in cost. Similarly, with respect to the rear anti-vibration rubber as well, no anti-vibration rubber anti-rotation device is shown, and the addition of anti-anti-vibration device also raises the cost problem. When the fan motor is driven and the rotating shaft rotates in one direction, a rotational force (that is, a counter torque) in the other direction is applied to the fan motor main body, so that the fan motor main body tries to rotate in the other direction. It is easy to press down the fan motor with the fixing plate itself in order to suppress the rotation of the fan motor body, but this method is not used because there is a problem that noise is generated by the vibration of the motor. It's a reality.

In view of the above, the present invention aims to provide a fan motor fixing device in which a fan motor main body is prevented from rotating by anti-torque associated with the driving of the motor by using a vibration-proof rubber.

[0005]

[Means for Solving the Problems]

 According to the present invention, a fan motor main body having front and rear brackets with a rotating shaft projecting and supporting the rotating shaft, front and rear fixing members for fixing the fan motor main body to a fan casing, and a fan motor main body are disposed between the fixing member and the bracket. In a fan motor fixing device having both front and rear anti-vibration rubbers for absorbing motor vibration, at least one of the anti-vibration rubbers has a groove portion for fitting a fixing member and the fan motor main body. It is provided with a detent part that controls the rotation of the fan motor body.

[0006]

[Action]

 The rotation of the rubber vibration isolator is regulated by fitting the fixture into the groove provided on the rubber vibration isolator. Further, the rotation of the fan motor body is restricted by the detent portion provided on the anti-vibration rubber engaging with the fan motor body. As a result, even if a counter torque is applied to the fan motor main body by driving the motor, the fan motor main body can be prevented from rotating.

[0007]

【Example】

 An embodiment of a fan motor fixing device of the present invention will be described below with reference to the drawings.

FIG. 4 is a vertical cross-sectional side view of a refrigerator to which this fan motor fixing device is applied, with a door removed.

Reference numeral 1 is a heat-insulating box having a front opening which constitutes the refrigerator body. The heat insulation box 1 is divided into upper and lower parts by a partition wall 2, and the space above the partition wall 2 is a freezing chamber 3 which is maintained at a freezing temperature, and the space below the partition wall 2 is maintained at a temperature at which food is not frozen. It will be used as a storage room.

The storage chamber is further divided into upper and lower parts by the front partition member 4 and the partition plate 5, and the space above the partition plate 5 serves as a refrigerating room 6 and the space below the partition plate 5 serves as a vegetable compartment 7. In the upper part of the refrigerating compartment 6, an ice greenhouse 8 is formed which is maintained at a temperature above the freezing temperature of food (that is, ice temperature), for example, -1 ° C., in order to store fresh food such as meat and fish.

Reference numeral 11 denotes a partition plate for forming a cooler chamber 12 in the rear part of the freezing chamber 3. The cooler chamber 12 cools the surrounding air with a refrigerant supplied from a compressor (not shown). A plate fin type evaporator 13 for forming cold air and a blower 14 for circulating the cold air in an insulating box are arranged. Reference numeral D denotes a cold air duct for introducing cold air circulated by the blower 14 into the refrigerating compartment 6 and the ice greenhouse 8, which is arranged at the back of the refrigerating compartment 6 and at the corner portion.

The blower 14 has a fan motor 15 and a fan 16 as main constituent elements. The fan 16 is housed in a fan casing 17, and the fan motor 15 is fixed to the fan casing 17 by a fixing device 30 described later. To be done. Into the fan casing 17, the rotary shaft 21 of the fan motor 15 is inserted and an inlet 18 for sucking in cool air, an outlet 19 for discharging the sucked in cool air, and a support for supporting a fixture described later. And a section 20 are provided.

A sirocco fan is adopted as the fan 16. The fan motor 15 includes a motor (not shown) having a rotating shaft 21 and a front bracket 23 that houses the motor and projects the rotating shaft 21 to one side and supports the rotating shaft 21 on one side and the other side. And a fan motor body 25 having a rear bracket 24.

Next, the fan motor fixing device 30 will be described.

The fixing device 30 includes a front fixing member 31 and a rear fixing member 32 having the same structure for fixing the fan motor main body 25 to the supporting portion 20 of the fan casing 17, a front fixing member 31 and a front bracket 23. A front anti-vibration rubber 33 disposed between the rear fixing device 32 and the rear bracket 24 for absorbing motor vibration; a rear anti-vibration rubber 34 disposed between the rear fixing device 32 and the rear bracket 24; And a fixing member 35 such as a screw for fixing 32 to the support portion 20 of the fan casing.

Since both the front and rear fixtures 31 and 32 have the same structure, only the front fixture 31 will be described. The fixture 31 is formed with a fixing portion 41 having a hole 40, and a holding portion 43 having a fitting hole 42 substantially in the center and enclosing substantially half of the fan motor main body 25 in a band shape.

The front anti-vibration rubber 33 has a projection 44 that covers the front bracket 23 and fits into the fitting hole 42 of the front fixture 31, and a hole 45 formed in this projection and through which the rotary shaft 21 is inserted. It is provided.

In the rear anti-vibration rubber 34, a projection 46 that covers the rear bracket 24, a hole 47 that is provided in this projection and into which the rear bracket is inserted, and a holding portion 43 of the rear fixture 32 are fitted into the groove 48. And a detent portion 49 that engages with a recess 50 formed in the fan motor body 25.

In the present embodiment, an example in which the groove portion 48 and the rotation stop portion 49 are formed in the rear anti-vibration rubber 34 has been shown, but it may be formed in the front anti-vibration rubber 33 or both anti-vibration rubbers. It may be formed, and may be formed on at least one of the vibration-proof rubbers.

According to the above-described structure, since the groove portion 48 into which the holding portion 43 of the fixture is fitted is formed in a part of the vibration-proof rubber 34, the fixed portion fixed to the support portion 20 of the fan casing 17 is fixed. The tool prevents the anti-vibration rubber 34 from rotating due to the anti-torque of the motor and does not rotate. Further, since the anti-rotation portion 49 that engages with the dent 50 formed in the fan motor main body 25 is formed in a part of the vibration proof rubber 34, the fan motor main body 25 is engaged by the dent 50 and the anti-rotation portion 49. The rotation of is regulated and never rotates. Therefore, the fan motor main body 25 can be prevented from rotating even if anti-torque associated with the motor driving is applied to the fan motor main body 25 by simply making a vibration proof rubber.

[0021]

[Effect of the device]

 According to the present invention, the motor drive can be performed without adding another component by a simple improvement in which a groove for fitting a fixture to at least one of the front and rear anti-vibration rubbers and a detent for engaging with the fan motor body are provided. It is possible to prevent the fan motor main body from rotating due to the anti-torque associated with.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a cross section of a main part showing a state before assembly of a fan motor fixing device of the present invention.

FIG. 2 is an enlarged cross-sectional view of a state in which a blower is fixed to a fan casing.

FIG. 3 is an exploded perspective view of a blower and a fan motor fixing device before assembly.

FIG. 4 is a vertical sectional side view showing a state in which a door of the refrigerator is removed.

[Explanation of symbols]

 15 Fan Motor 16 Fan 17 Fan Casing 20 Support 21 Rotating Shaft 23 Front Bracket 24 Rear Bracket 25 Fan Motor Main Body 30 Fan Motor Fixing Device 31 Front Fixing Tool 32 Rear Fixing Tool 33 Front Anti-Vibration Rubber 34 Rear Anti-Vibration Rubber 48 Groove 49 Detent part

Claims (1)

[Scope of utility model registration request] 1. A fan motor main body having front and rear brackets having a rotating shaft protruding and supporting the rotating shaft, front and rear fixing members for fixing the fan motor main body to a fan casing, and arranged between the fixing member and the bracket. In a fan motor fixing device provided with front and rear anti-vibration rubbers for absorbing motor vibration, at least one anti-vibration rubber of the anti-vibration rubbers has a groove portion to which a fixture is fitted, and a fan motor main body. A fan motor fixing device, characterized in that it is provided with a detent part for restricting rotation of the fan motor main body.