JPH08136027A - Fan for pipe - Google Patents

Abstract

PURPOSE: To mount a mounting spring on a body frame together with a motor without requiring working such as screwing and a screwing boss part in the mounting of the body frame in a method of mounting the body frame by inserting the body frame into a pipe together with the mounting spring arranged on the outer circumference part thereof to make the mounting spring abut the inner circumferential surface part of the pipe elastically. CONSTITUTION: A U-shaped grasping part 33 with interval dimensions on the side of the tip part smaller than those on the side of the root part is formed on a mounting spring 29. The grasping part 33 is inserted into a body frame 21 through a mounting spring insertion hole 25 formed in the body frame 21 and a motor mounting part 23 in the body frame 21 is held being grasped together with a mounting plate part 28 of a motor 26. This enables the mounting of the mounting spring 29 on the body frame 21 while the motor 26 can be mounted on the motor mounting part 23.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe fan with an improved mounting structure for mounting springs.

[0002]

2. Description of the Related Art Conventionally, in this type of pipe fan, as shown in FIGS. 28 and 29, a motor mounting portion 3 having a screwing boss portion 2 inside a main body frame 1 is, for example, three.
The motor 4 is provided at the screw tightening boss 2 portion.
Address the mounting plate portion 5. Further, the peripheral wall portion of the main body frame 1 is provided with the same number of mounting spring insertion holes 6 corresponding to the positions of the screw tightening boss portions 2 of the motor mounting portion 3, and the mounting piece portions of the mounting springs 7 are attached thereto. 8 is inserted from the outside, and the mounting piece portion 8 is tightened together with the mounting plate portion 5 of the motor 4 by the screw 9 screwed into the screw tightening boss portion 2 to mount the motor 4 on the motor mounting portion 3. The mounting spring 7 is mounted on the body frame 1.

The motor 4 has a rotating shaft 10 and a blower blade 1
1 is attached, and further, a decorative frame 12 is attached to the main body frame 1. With this configuration, a hole 1 formed in a wall 13 of a house
The body frame 1 is attached to the pipe 15 mounted on
The main body frame 1 is attached to the pipe 15 by inserting the main frame 1 into the pipe 15 by elastically contacting the inner peripheral surface of the pipe 15 with the mounting spring 7.

[0004]

The above-mentioned conventional device has the following drawbacks. 1. Although the attachment spring 7 is attached to the main body frame 1 together with the motor 4, the attachment is performed by tightening the screw 9 and it takes time and labor, so that the manufacturing cost is high.

[0005] 2. When the screw tightening boss portion 2 contracts with time, a gap is created between the mounting plate portion 5 of the motor 4 and the screw tightening boss portion 2, and vibration is generated during operation.

[0006] 3. Due to the length of the screw tightening boss portion 2 in the main body frame 1, the axial length of the blower blade 11 is restricted, or the main body frame 1 is accommodated to accommodate the blower blade 11 of a desired axial length. It became necessary to increase the length in the axial direction, which led to the enlargement of the equipment.

The present invention has been made in view of the above circumstances, and therefore an object thereof is to mount a mounting spring on a main body frame together with a motor without requiring trouble such as screw tightening or a screw tightening boss portion. The purpose is to provide a fan for pipes.

[0008]

In order to achieve the above object, in the pipe fan of the present invention, a main body frame in which a motor and blower blades rotatably driven by the motor are installed is provided.
A motor mounting provided on the body frame, which is mounted by inserting the mounting spring into the pipe together with the mounting spring disposed on the outer peripheral portion and elastically contacting the mounting spring on the inner peripheral surface of the pipe. Part and mounting spring insertion hole, and the mounting spring is provided in a U-shape in which the distance between the tip side and the root side is smaller than the distance between the root side and the mounting spring. And a holding portion for holding the portion together with the mounting plate portion of the motor.

In this case, it is advisable to form a diverging bent portion at the tip of the holding portion of the mounting spring, or to form an engaging hole and to project the engaging hole in the motor mounting portion of the main frame. It is better to fit the part and lock it.

Further, another mounting piece is formed in the mounting spring together with the holding portion, and the engaging hole formed in the mounting piece and the holding portion is fitted to the projection formed in the motor mounting portion of the main body frame. You may make it unite and it may be made to lock.

Further, the sandwiching portion of the mounting spring is formed in a U-shape in which the distance dimension on the tip end side is smaller than the distance dimension on the root side by providing engaging claws inside the tip end portion and the intermediate portion, respectively. The engaging claws may be fitted and locked in the recesses formed in the motor mounting portion of the main body frame.The knob portion may be formed together with the holding portion, and the holding portion may be pinched to hold the holding portion in the motor. It is preferable that it can be detached from the mounting portion and the mounting plate portion of the motor.

[0012]

According to the above means, the holding portion of the mounting spring is inserted into the body frame through the mounting spring insertion hole of the body frame to hold the motor mounting portion together with the mounting plate portion of the motor to hold the motor in the motor. The attachment spring can be attached to the main body frame while being attached to the attachment portion.

In this case, particularly, in the case where the tip of the holding portion of the mounting spring is formed with a diverging bent portion, the holding portion of the mounting spring is inserted from the bent portion into the mounting spring insertion hole of the main body frame. The gripping portion can be naturally expanded, and the operator can save the time and effort of manually expanding the gripping portion.

Further, an engaging hole is formed in the holding portion of the mounting spring,
In the case where the engaging hole is fitted to the protrusion formed on the motor mounting portion of the main body frame and locked, the mounting spring can more reliably prevent the mounting spring from falling off.

Further, another mounting piece is formed in the mounting spring together with the holding portion, and the engaging hole formed in the mounting piece and the holding portion is fitted to the projection formed in the motor mounting portion of the main body frame. Even in the case of locking by doing so, the locking structure can more reliably prevent the mounting spring from falling off.

In addition, the holding portion of the mounting spring is provided with engaging claws inside the tip portion and the intermediate portion, respectively, so that the distance dimension on the tip side is smaller than that on the root side. Even if the engaging claw is formed and fitted into the recess formed in the motor mounting portion of the main body frame and locked, the mounting structure can more reliably prevent the mounting spring from falling off. .

In the case where the mounting spring is formed with a grip portion together with the gripping portion and the gripping portion is gripped so that the gripping portion can be disengaged from the motor mounting portion and the motor mounting plate portion, the mounting spring can be removed. Can be easily performed and workability at the time of service can be improved.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. First, FIG. 1 shows a main body frame 21, which is made of plastic and mainly has a cylindrical portion 22. The cylindrical portion 22 is provided with motor mounting portions 23, which are relatively thick in the axial direction, integrally formed at three locations on the inner peripheral portion, for example, at approximately 120-degree angular intervals. An annular motor receiving portion 24 to be connected is also integrally formed. Further, the peripheral wall portion of the cylindrical portion 22 is aligned with the motor mounting portion 23, and two mounting spring insertion holes 25 are formed in the circumferential direction at two locations on both sides in the axial direction thereof.

On the other hand, the motor 26 has a flange portion 27 on its outer peripheral portion, and the mounting plate portion 28 is projected outward from each of the three portions of the flange portion 27 corresponding to the motor mounting portion 23. have.

The mounting spring 29 is composed of a leaf spring, and as shown in FIGS. 2 and 3, has a corrugated portion 30 as a main component, and one end of the corrugated portion 30 has two narrow one-side clamping pieces 31.
And the one wide side holding piece 32 forms a narrow U-shaped holding portion 33 in which the distance dimension A on the tip side is smaller than the distance dimension B on the root side. Here, as shown in FIG. 4, assuming that the axial thickness of the motor mounting portion 23 of the body frame 21 is C and the axial thickness of the mounting plate portion 28 of the motor 26 is D, the total dimension (C + D) thereof is When E is set, the spacing dimension A on the tip end side of the holding portion 33 of the mounting spring 29 shown in FIG. 3 is set smaller than the dimension E, and the spacing dimension B on the root side is set equal to or larger than the dimension E. (A
<E, B ≧ E).

Therefore, when the mounting spring 29 is mounted, first, the motor 26 is installed in the cylindrical portion 22 of the main body frame 21 and the rotary shaft 3 is rotated.
4 is inserted into the motor receiving portion 2 with the flange portion 27 inserted.
4 and the mounting plate portion 28 to the motor mounting portion 23. Then, the holding portion 33 of the mounting spring 29 is expanded until the distance dimension A on the tip end side becomes larger than the dimension E, and in this state, the holding portion 33 of the mounting spring 29 is attached to the mounting spring insertion hole of the main body frame 21. Insert from 25 into the body frame 21. Then, the holding portion 33 of the mounting spring 29 restores from the above-described expanded state by the elastic force and holds the motor mounting portion 23 together with the mounting plate portion 28 of the motor 26 by pinching. The mounting spring 2
The number 9 (three in this case) of the motor mounting portions 23 exists, and the above procedure is performed for all of them. Thus, the motor 26 can be mounted on the motor mounting portion 23, and at the same time, the mounting spring 29 can be mounted on the main body frame 21.

Therefore, the motor 26 is provided with the blower blades 35 on the rotary shaft 34, and the main body frame 21 is provided with the rectangular flange portion 36 formed at the end portion of the blower blades 35, and the decorative frame 37 is recessed 38. And the claw portion 39 are engaged with each other. With this configuration, the cylindrical portion 22 of the main body frame 21 is inserted together with the attachment spring 29 into the pipe 42 installed in the hole 41 formed in the wall 40 of the house. , The wavy portion 30 of the mounting spring 29
The body frame 21 is attached to the pipe 42 by elastically contacting the inner peripheral surface of the pipe 42.

As described above, in this structure, the mounting spring 2
9 is inserted into the main body frame 21 from the mounting spring insertion hole 25 of the main body frame 21 to attach the motor mounting portion 23 to the motor 26.
Since the motor 26 can be mounted on the motor mounting portion 23 and the mounting spring 29 can be mounted on the main body frame 21 by holding the mounting plate portion 28 together with the mounting plate portion 28, there is no need for the screw tightening unlike the conventional one. , The workability of mounting can be improved, and the manufacturing cost can be reduced.

Further, since the holding portion 33 of the mounting spring 29 elastically clamps the motor mounting portion 23 together with the mounting plate portion 28 of the motor 26, even if the motor mounting portion 23 contracts with time, they are elastically clamped by following them. The pressure continues to be applied, and there is no gap between the mounting plate portion 28 of the motor 26 and the motor mounting portion 23 unlike the conventional one, so that it is possible to prevent the occurrence of vibration during operation.

Further, unlike the conventional one, a screw tightening boss portion is not required in the main body frame 21, so that the axial length of the blower blade 35 can be increased and the axial length of the blower blade 35 can be increased accordingly. If it is kept the same as the conventional one, the axial length of the main body frame 21 can be reduced, and the device can be downsized.

In contrast to the above, FIGS. 5 and 6 show a second embodiment of the present invention, in which a bent portion 43 is formed at the tip of the holding portion 33 of the mounting spring 29. In addition, the dimension F between the tip portions is larger than the dimension E (F> E). Therefore, in this one, the mounting spring 29
By inserting the holding portion 33 from the bent portion 43 into the mounting spring insertion hole 25 of the main body frame 21, the holding portion 33 sequentially contacts the motor mounting portion 23 and the mounting plate portion 28 of the motor 26 from the bending portion 43. Since it can be naturally expanded, it is possible to further improve the workability of mounting because it is possible for the operator to save the time and effort of expanding by hand.

FIGS. 7 to 10 show a third embodiment of the present invention, in which the holding portion 44 is attached to the mounting spring 29 by one cut-and-raised one side holding piece 45 and the other side holding piece 32.
Is formed so as to have a narrowed U-shape, and also has a bent portion 46 which is divergent at the tip, and engaging holes 47 and 48 are formed in both of the holding pieces 45 and 33. The engaging holes 47 and 48 are formed in the motor mounting portion 23 of the main body frame 21.
The projections 49 and 50 respectively formed on the front and rear both sides are engaged with each other so as to be locked. By doing so, it is possible to more reliably prevent the mounting spring 29 from coming off. Therefore, the motor 26 can also be held more securely.

In this case, the mounting plate portion 2 of the motor 26
8 also has a hole 51 formed therein, and the protrusion 50 formed on the rear surface of the motor mounting portion 23 penetrates through the hole and is fitted into the engaging hole 47.
The motor 26 can be held more reliably.

FIGS. 11 to 15 show a fourth embodiment of the present invention, in which the mounting spring 29 is provided with a pair of sandwiching pieces 52 and 53 opposed to each other in the longitudinal direction, and has a narrow U-shaped sandwiching portion. 54, and another mounting piece 55 located at the longitudinal end is formed, and this mounting piece 55 is formed.
And the engaging holes 56, 57, 58 formed in both the holding pieces 52, 53 of the holding portion 54 on the rear surface portion of the motor mounting portion 23 of the main body frame 21 and the circumferential direction both side surface portions.
It is shown that the fitting spring 61 is fitted to and locked with the motor 61. By doing so, the attachment spring 29 can be more reliably prevented from falling off, and therefore the motor 26 can be more reliably held. can do.

In this case as well, a hole 51 is formed in the mounting plate portion 28 of the motor 26, and this is used as the motor mounting portion 2.
The protrusion 59 formed on the rear surface of the No. 3 is fitted. or,
A bent portion 62 is formed at the tip of each of the holding pieces 52 and 53 of the holding portion 54 and the mounting piece portion 55. or,
In the cylindrical portion 22 of the main body frame 21, both holding pieces 5 of the holding portion 54 are provided.
Mounting spring insertion holes 63, 64, 65 for inserting 2, 53 and the mounting piece portion 55 are formed on both side surfaces and rear side in the circumferential direction of the motor mounting portion 23 so as to be connected in a U-shape. There is.

FIGS. 16 to 19 show a fifth embodiment of the present invention, in which the holding portion 66 is attached to the mounting spring 29 by one cut-and-raised one side holding piece 67 and the other side holding piece 68 having the same width. , And the engaging claws 69 and 70 that are respectively bent and provided on the inner sides of the tip portions thereof, the distance dimension A on the tip end side is formed in a U-shape smaller than the gap dimension B on the root side,
Then, the engaging claw 69 is connected to the motor mounting portion 2 of the main body frame 21.
3 is engaged with a recess 71 formed in the front surface of the motor 3 and locked, and the engaging claw 70 is locked with the protrusion 50 on the rear surface of the motor mounting portion 23. Even with the above structure, the locking structure can more reliably prevent the mounting spring 29 from falling off, and thus more reliably hold the motor 26.

FIGS. 20 to 23 show a sixth embodiment of the present invention, in which the holding portion 72 is attached to the mounting spring 29, and the one side holding piece 67 and the other wide side holding piece 7 are formed by cutting and raising as described above.
3, and the engaging claws 74 and 75 that are cut and raised inside the intermediate portions thereof, are formed in a U-shape in which the distance dimension A on the tip side is smaller than the distance dimension B on the root side, Then, the engaging claw 74 is fitted and locked in the concave portion 71 of the motor mounting portion 23 of the main body frame 21, and the engaging claw 75 is provided.
Is fitted into the hole 51 of the mounting plate portion 28 of the motor 26 to be locked. Even with such a structure, the locking structure ensures that the mounting spring 29 does not come off. Can be prevented, and thus the motor 26
Can be held more reliably.

FIGS. 24 to 27 show a seventh embodiment of the present invention. In the equivalent to the third embodiment, the engaging hole 4 is formed in the other side holding piece 32 of the holding portion 44 of the mounting spring 29.
8 shows that a hole 76 and a knob portion 77 are formed by cutting and raising instead of 8, and in this thing, the engaging hole 47 of the one side holding piece 45 is formed in the front surface portion of the motor mounting portion 23 of the main body frame 21. While fitting and locking the formed protrusion 49,
From the state in which the hole 76 of the other side holding piece 32 is fitted and locked to the protrusion 50 formed on the rear surface of the motor mounting portion 23, the knob 77 is pinched and separated as indicated by an arrow G in FIG. 27. Accordingly, in the case where the holding portion 44 can be disengaged from the motor mounting portion 23 and the mounting plate portion 28 of the motor 26, the mounting spring 29 can be easily removed and the workability at the time of servicing can be improved.

In this case, a mounting spring insertion hole 78 is formed in the main body frame 21 by a notch on the side of the knob 77 so that the knob can be operated as desired. In addition, the present invention is not limited to the embodiments described above and shown in the drawings, and may be appropriately modified and implemented without departing from the scope of the invention.

[0035]

The pipe fan of the present invention is as described above, and has the following effects. First, a main body frame in which a motor and a blower blade that is rotationally driven by the motor are installed is inserted into a pipe together with a mounting spring disposed on the outer peripheral portion thereof, and the mounting spring is elastically attached to the inner peripheral surface portion of the pipe. In the case of mounting by contacting each other, the motor mounting portion and the mounting spring insertion hole provided in the main body frame, and the U-shape in which the distance between the tip of the mounting spring is smaller than the distance between the root and The mounting spring is inserted into the main body frame through the mounting spring insertion hole and holds the motor mounting portion together with the mounting plate portion of the motor. It can be installed together with the motor on the main body frame without requiring a lot of trouble and a screw tightening boss, which can improve the workability of installation and prevent the occurrence of vibrations during operation. Or the length can be increased or can be reduced to the axial length of the main body frame, it is possible to makes it possible to miniaturize the equipment.

Secondly, by forming a diverging bent portion at the tip of the holding portion of the mounting spring, it is possible to save the labor for the operator to open the holding portion one by one. The sex can be further improved.

Thirdly, the engaging hole is formed in the holding portion of the mounting spring, and the engaging hole is fitted and locked to the projection formed on the motor mounting portion of the main body frame. The attached spring can be more reliably prevented from falling off, and the motor can be held more reliably.

Fourthly, another mounting piece is formed in the mounting spring together with the holding portion, and the engaging hole formed in the mounting piece and the holding portion is formed in the protrusion formed in the motor mounting portion of the main body frame. By fitting and locking the mounting spring, the attachment spring can be more reliably prevented from falling off, and the motor can be held more reliably.

Fifthly, the holding portion of the mounting spring is formed in a U-shape in which the distance dimension on the tip side is smaller than the distance dimension on the root side by providing an engaging claw inside the tip side. ,
By engaging the engaging claws with the recesses formed in the motor mounting portion of the main body frame and locking them, the mounting spring can be more reliably prevented from falling off, and the motor can be held more securely. Can be done.

Sixthly, the holding portion of the mounting spring is formed in a U shape in which the distance dimension on the tip end side is smaller than the distance dimension on the root side by providing an engaging claw inside the intermediate portion. ,
By engaging the engaging claws with the recesses formed in the motor mounting portion of the main body frame and locking the engaging claws, as described above,
The attachment spring can be more reliably prevented from falling off, and the motor can be held more reliably.

Seventh, the mounting spring is formed with a gripping portion together with the gripping portion, and the gripping portion is gripped so that the gripping portion can be disengaged from the motor mounting portion and the motor mounting plate portion. Can be easily removed, and workability at the time of service can be improved.

[Brief description of drawings]

FIG. 1 is an overall exploded perspective view showing a first embodiment of the present invention.

FIG. 2 is a perspective view of a mounting spring alone.

[Figure 3] Side view of the mounting spring alone

FIG. 4 is a vertical cross-sectional side view of the entire mounting state.

FIG. 5 is a view corresponding to FIG. 2 showing a second embodiment of the present invention.

FIG. 6 is a view corresponding to FIG.

FIG. 7 is a view corresponding to FIG. 2, showing a third embodiment of the present invention;

FIG. 8 is a view corresponding to FIG.

FIG. 9 is an enlarged view corresponding to FIG.

FIG. 10 is an enlarged view corresponding to FIG.

FIG. 11 is a view corresponding to FIG. 2, showing a fourth embodiment of the present invention;

FIG. 12 is a sectional view taken along the line A-A in FIG.

13 is a cross-sectional view taken along the line EE of FIG.

FIG. 14 is an enlarged view corresponding to FIG.

FIG. 15 is an enlarged view corresponding to FIG. 4 part.

FIG. 16 is a diagram corresponding to FIG. 2 showing a fifth embodiment of the present invention.

FIG. 17 is a view corresponding to FIG.

FIG. 18 is an enlarged view of a portion corresponding to FIG.

FIG. 19 is an enlarged view corresponding to FIG. 4 part.

FIG. 20 is a view corresponding to FIG. 2 showing a sixth embodiment of the present invention.

FIG. 21 is a view corresponding to FIG. 12.

FIG. 22 is an enlarged view corresponding to FIG.

23 is an enlarged view corresponding to FIG. 4 part.

FIG. 24 is a view corresponding to FIG. 2 showing a seventh embodiment of the present invention.

FIG. 25 is a view equivalent to FIG.

FIG. 26 is an enlarged view corresponding to FIG.

FIG. 27 is an enlarged view corresponding to FIG. 4 part.

FIG. 28 is a view corresponding to FIG. 1 showing a conventional example.

FIG. 29 is a diagram corresponding to FIG. 4;

[Explanation of symbols]

Reference numeral 21 is a main body frame, 23 is a motor mounting portion, 25 is a mounting spring insertion hole, 26 is a motor, 28 is a mounting plate portion, 29 is a mounting spring, 33 is a sandwiching portion, 35 is a blower blade, 42 is a pipe, 4
3 is a bent portion, 44 is a sandwiching portion, 46 is a bent portion, 47, 48
Is an engaging hole, 49 and 50 are projecting portions, 54 is a sandwiching portion, 55 is a mounting piece portion, 56, 57 and 58 are engaging holes, 59, 60 and 61.
Is a projecting portion, 62 is a bent portion, 63, 64 and 65 are mounting spring insertion holes, 66 is a holding portion, 69 and 70 are engaging claws, 71 is a concave portion, 72 is a holding portion, 74 and 75 are engaging claws, Reference numeral 77 indicates a knob portion, A indicates a space dimension on the tip end side of the sandwiching portion, and B indicates a space dimension on the root side of the sandwiching portion.

Claims (7)

[Claims] 1. A motor and a main body frame in which a blower blade rotationally driven by the motor is installed are inserted into a pipe together with a mounting spring arranged on an outer peripheral portion of the main frame, and the mounting spring is mounted on an inner peripheral surface portion of the pipe. In the case of mounting by elastic contact, the motor mounting portion and the mounting spring insertion hole provided on the main body frame and the spacing dimension of the mounting spring on the tip end side are smaller than the spacing dimension on the root side. A pipe fan, which is provided in the shape of a letter and which is inserted into the main body frame through the attachment spring insertion hole and holds the motor attachment portion with the attachment plate portion of the motor with an attachment pressure. . 2. The fan for pipes according to claim 1, wherein a bent portion is formed at the tip of the holding portion of the mounting spring. 3. An engaging hole is formed in a holding portion of the mounting spring, and the engaging hole is fitted and locked to a projection formed on the motor mounting portion of the main body frame. The pipe fan according to claim 1. 4. A second mounting piece portion is formed in the mounting spring together with the holding portion, and the engaging hole formed in the mounting piece portion and the holding portion is fitted to the protrusion formed in the motor mounting portion of the main body frame. The fan for pipes according to claim 1, wherein the fan is for locking. 5. The holding portion of the mounting spring is formed in a U-shape in which the distance dimension on the tip side is smaller than the distance dimension on the root side by providing an engaging claw inside the tip side. The pipe fan according to claim 1, wherein the dowel is fitted into a recess formed in the motor mounting portion of the main body frame and locked. 6. The sandwiching portion of the mounting spring is formed in a U shape in which the distance dimension on the tip end side is smaller than the distance dimension on the root side by providing an engaging claw inside the intermediate portion. The pipe fan according to claim 1, wherein the dowel is fitted into a recess formed in the motor mounting portion of the main body frame and locked. 7. The mounting spring is provided with a grip portion together with a grip portion, and the grip portion is gripped so that the grip portion can be disengaged from the motor mounting portion and the motor mounting plate portion. The described fan for pipes.