JPH0658290A - Cross flow blower - Google Patents

Abstract

PURPOSE:To facilitate manufacture by forming each hook part at both the edge parts of a blade, inserting the hook part into a slit, and carrying out fixation throtugh the bending of the hook part, as for a cylindrical blower which is supported by inserting a blade into the slit, between the left and right side plates having the slits on the periphery. CONSTITUTION:As for a cross flow blower 8 which is constituted by connecting a plurality of cylindrical blowers 9 in the axial direction, each blower 9 is constituted of a pair of side plates 7 each of which consists of a disc having an inner hole 10 at the center and has arcuate slits 11,... drilled at a prescribed intervals on the outer periphery and a plurality of blades 12 arranged between both the side plates 7 and 7. On each blade 12, each arcuate hook part 13 having the smaller width than the total width of the blade 12 is projectingly installed at both the edges, and after the hook part 13 is inserted into the slit 11 formed on the side plate 7, the hook 13 is fixed by bending the projecting edge part. A plurality of blowers 9 are connected by the rivet caulking method, or the mutual caulking between the outer or inner peripheries of the contiguous side plates 7, etc.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a cross flow fan.

[0002]

2. Description of the Related Art FIG. 7 is a diagram showing a manufacturing process of a conventional cross flow fan disclosed in, for example, Japanese Utility Model Laid-Open No. 2-118196. In FIG. 7, reference numeral 1 is a blade of the blower. 2 is 1
The side plate 3 for holding the blade is a slit provided in the side plate into which the blade 1 is inserted, 4 is a notch provided in the blade 1, and 5 is a roller.

The conventional cross-flow blower is constructed as described above, and as shown in FIG. 7A, a required number of side plates 2 are arranged so as to form a cylinder. Next, the blade 1 is inserted into the slit 3 provided in the side plate 2. Wing 1 to be positioned when inserting
Since the cutout portion 4 is provided in, the cutout portion 4 is inserted in alignment with the slit 3. Next, as shown in FIG. 7b, a required number of blades 1 are inserted into the side plate 2 depending on the performance to form a cross flow fan. Finally, as shown in FIG. 7C, the roller 5 is pressed against the outer circumference of the side plate 2 to crush the outer circumference, and the blade 1 is fixed in the slit 3. The above is the manufacturing procedure.

[0004]

In the conventional cross-flow blower as described above, since the blade 1 has a long overall length, the workability in inserting it into the side plate 2 is poor, and the automatic insertion is impossible and the productivity is poor. was there.

There is also a problem that the blade 1 has a constant length, the blade length cannot be freely changed, and the versatility is poor.

The present invention has been made in order to solve the above-mentioned problems, and it is possible to automatically insert the blade into the side plate, which has good productivity, and which is versatile in cross-section capable of changing the blade length according to the performance. The purpose is to obtain a blower.

[0007]

A cross-flow blower according to the present invention comprises a cylindrical blower formed by inserting side walls having slits opposite to each other and inserting blades into the slits, and connecting a plurality of the blowers. In the formed cross-flow blower, a claw portion is continuously provided at both ends of the blade, and the claw portion is inserted into the slit and the claw portion is bent or crushed.

Further, in a plurality of blowers connected via side plates, the slit positions of the side plates are arranged so as to differ by a certain amount for each blower.

Further, the side plate is provided with a caulking hole and a caulking jig hole formed at a constant angle.

Further, in a plurality of blowers connected via side plates, the outer peripherals of the connected side plates are connected by caulking.

In a plurality of blowers connected via side plates, the blowers connected by caulking the inner circumferences of the side plates to be connected are connected by caulking the outer circumferences of the side plates. is there.

[0012]

According to the present invention, a cylindrical blower in which side plates having slits are opposed to each other and blades are formed by inserting blades into the slits, and a cross-flow blower formed by connecting a plurality of the blowers are provided. The wing is fixed to the side plate by connecting the claws to both ends of the blade and inserting the claw into the slit and bending or crushing the claw.

Further, in a plurality of blowers connected via side plates, the slit positions of the side plates are arranged so as to differ by a certain amount for each blower, whereby the blade length is divided in the axial direction of the blower, and the blowers are divided. The collision energy that hits is dispersed.

Further, since the side plate is provided with the caulking hole and the caulking jig hole formed at a constant angle, the caulking jig is inserted in the caulking jig hole, and the side plates are joined by the caulking hole. It is crimped.

Further, in a plurality of blowers connected through the side plates, the blowers are connected through the side plates by connecting by caulking the outer peripheries of the connected side plates.

In a plurality of blowers connected via side plates, the blowers connected by caulking the inner circumferences of the side plates to be connected are connected by caulking the outer circumferences of the side plates. The blowers are connected by swaging the inner circumferences of the side plates, and the blowers are further connected by swaging the outer circumferences of the side plates of the connected blowers.

[0017]

【Example】

Example 1. 1a to 1c are views showing Embodiment 1 of the present invention, in which 7 is a side plate of a cylindrical blower 9 which is a part of a cross flow blower 8 and has a circular plate having an inner hole 10 at its center. On the outer circumference, a plurality of arc-shaped first slits 11 are formed at predetermined intervals. Reference numeral 12 is a wing, and claw portions 13 having an arc shape and having a width smaller than the full width are projectingly provided from the center at both ends, and the claw portions are inserted into the first slit 11.

In the cross-flow blower of the first embodiment configured as described above, the claw portions 13 of the blades 12 are inserted into the first slits 11 of the side plates 7 facing each other as shown in FIG. The claw portion 13 is bent by a jig (not shown). Then, as shown in FIG. 1b, a required number of blades 12 are inserted into the side plate 7 to form a cylindrical blower 9, and this blower 9 is optionally required on the cylindrical shaft as shown in FIG. 1c. A large number of side plates 7 are joined by rivets (not shown) to connect them to form a cross flow fan 8.

Example 2. 2A to 2C are views showing a second embodiment of the present invention. In FIG. 2, reference numeral 20 is a second slit provided in the side plate 7, which is an arc shape whose outer periphery is opened at a predetermined interval on the outer periphery of the side plate 7. And a plurality of them are provided. Reference numeral 21 denotes a notch provided in the claw portion 13 of the wing 12, and 2
2 is a roller.

In the cross-flow fan of the second embodiment configured as described above, the notch 21 of the claw portion 13 of the blade 12 is formed in the second slit 20 of the side plate 7 facing each other as shown in FIG. After aligning, insert. Then, as shown in FIG. 2B, the second slit 2 on the side plate 7 is formed by the roller 22.
Crush the opening on the outer periphery of 0. As a result, the wing 12 becomes the side plate 7
Fixed to. Further, as in the first embodiment, the blower 9
The side plates 7 are connected to each other by rivets to form a cross flow blower 8 on the cylindrical shaft.

Example 3. FIG. 3 is a diagram showing a third embodiment of the present invention. In the first and second embodiments, the first slit 11 and the second slit 20 of the side plate 7 are all at the same position on the cross flow fan 8. Although there was no change, the position of the blade 12 is changed for each blower 9 in the third embodiment. That is, the positions of the blades 12 in the blower 9 connected as shown in the figure are displaced by a constant distance δ. As a result, when formed as the cross flow blower 8, the positions of the blades 12 are consequently staggered.

In the cross-flow fan of the third embodiment configured as described above, when incorporated in a device not shown, a blower casing (not shown) surrounding this cross-flow blower 8 is provided.
On the other hand, when the cross flow fan 8 rotates, the axial length of the blade 12 can be divided, the collision energy with respect to the cross flow fan 8 is dispersed, and noise can be reduced.

Example 4. 4a and 4b are views showing Embodiment 4 of the present invention, in which a plurality of caulking holes 25 are provided in the side plate 7, and a plurality of holes are provided at equal intervals. Reference numeral 26 denotes a caulking jig hole, which is shown in FIG.
As shown in b, three holes are provided at a constant angle θ from a to e, and a plurality of holes are similarly provided for the next caulking hole 25. 27 is a rivet caulking jig.

In the cross-flow blower of the fourth embodiment having the above-described structure, when the blower 9 is connected to the cylindrical shaft, the blower 9 is not positioned by passing the rivet crimping jig 27 through the caulking jig hole 26. The rivet caulking is performed in the caulking hole 25. Further, when many blowers 9 are connected, the caulking hole 25 is rotated by θ to position the caulking hole 25 and the rivet caulking is performed. As a result, the rivets can be caulked easily from the same direction.

Example 5. 5A and 5B are views showing a fifth embodiment of the present invention, in which an outer flange curved portion 30 integrally provided around one side plate 7 of the blower 9 is provided with a substantially L-shaped projecting end. It has a bending piece 31. Reference numeral 32 denotes an outer flange integrally provided on the other side plate 7 of the blower 9.

In the cross-flow blower of the fifth embodiment configured as described above, when the blower 9 is connected on the cylindrical shaft,
As shown in a), the outer flange 32 of the side plate 7 of the one blower 9 is aligned with the outer flange bent portion 30 of the side plate 7 of the other blower 9, and the bending piece is held so that the outer flange bent portion 30 holds the outer flange 32. Bend 31 and crimp. Then, as shown in FIG. 5B, the transverse air blower 8 is formed by repeating the crimping. In this way, the side plate 7
Since the outer peripheral portion is caulked, the caulking jig can be installed from the outside of the blower 9, and the caulking can be easily performed.

FIG. 6 is a diagram showing a sixth embodiment of the present invention, in which 40 is an inner flange integrally formed with an inner hole 10 which is an inner circumference of the side plate 7, and 41 is also an inner hole 10 of the side plate 7. It is an inner flange curved portion that is integrally provided and has a bending piece 31.

In the cross-flow fan of the sixth embodiment constructed as described above, each blower 9 to be connected is composed of the side plate 7 having the inner flange curved portion 41 on one side and the side plate 7 having the outer flange curved portion 30 on the other side. Blower A42, inner flange 4 on one side
A blower B43 including a side plate 7 having 0 and a side plate 7 having an outer flange 32 on the other side is formed. And these blowers A42 and B43 are connected by the inner flange 40 and the inner flange curved part 41, and the double blower 44 is formed. Next, a plurality of the double blowers 44 are arbitrarily arranged in the axial direction, and the outer circumferences of the side plates 7 are joined to each other by the outer flange curved portion 30 and the outer flange 32.
They are connected to each other by caulking to form a cross flow blower 8. As a result, the caulking time can be shortened by caulking the inner peripheral portion of the side plate 7 where the caulking jig can be easily installed.

[0029]

As described above, according to the present invention, the blade can be inserted only by inserting it into the two side plates, and since the blade length is short, the blade can be automatically assembled in a short time.
Further, the number of stations of the blowers continuously arranged on the cylindrical shaft and the blade pitch on the circumference can be easily changed, the blade length can be arbitrarily changed according to the performance, and the noise can be further reduced.

[Brief description of drawings]

FIG. 1 shows Embodiment 1 of the present invention, in which a is an assembled perspective view,
b is a front sectional view and a side view of the blower, and c is a perspective view.

FIG. 2 shows Embodiment 2 of the present invention, in which a is an assembled perspective view,
b is a front sectional view and assembly drawing of the blower, and c is a perspective view.

FIG. 3 is a perspective view showing a third embodiment of the present invention.

FIG. 4 shows Embodiment 4 of the present invention, in which a is an assembled perspective view including a caulking jig, and b is a front view of a side plate.

FIG. 5 shows Embodiment 5 of the present invention, in which a is an assembly view showing caulking of side plates, and b is a cross-sectional view of a cross flow fan.

FIG. 6 is an assembly view showing a sixth embodiment of the present invention.

FIG. 7 is an assembly diagram showing a conventional cross-flow blower.

[Explanation of symbols]

 7 Side Plate 8 Cross Flow Blower 9 Blower 11 First Slit 12 Blade 13 Claw 20 Second Slit 25 Caulking Hole 26 Caulking Jig Hole

Claims (5)

[Claims] 1. A cylindrical blower in which side plates having slits are opposed to each other, and blades are formed by inserting blades into the slits, and a cross-flow blower formed by connecting a plurality of the blowers together. A cross-flow blower, characterized in that a claw portion is connected to the above, and the claw portion is bent or crushed after inserting the claw portion into the slit. 2. The cross flow blower according to claim 1, wherein a plurality of blowers connected through the side plates are arranged such that the slit positions of the side plates differ by a certain amount for each blower. 3. The cross flow blower according to claim 1, wherein the side plate is provided with a caulking hole and a caulking jig hole formed at a constant angle. 4. The cross flow blower according to claim 1, wherein the plurality of blowers connected through the side plates are connected by caulking the outer circumferences of the connected side plates. 5. A plurality of blowers connected via side plates, wherein the blowers connected by caulking the inner peripherals of the side plates connected are connected by caulking the outer peripherals of the side plates. The crossflow blower according to claim 1, which is characterized in that.