KR20030095592A - A fan with blades made of resin - Google Patents

Abstract

An object of the present invention is to provide a fan provided with a resin blade which is excellent in durability and cooling performance of a fan by preventing cracks caused by stress concentration caused by stress concentration during the fan rotation or heat shrinkage of a material.

In a fan in which a resin blade is independently provided on a metal disk, a metal spider part, which is a separate member, is attached to the metal disk by welding, rivets, bolts, and the like, and the resin blade is integrated into the spider disk. It is characterized in that it is formed by molding.

This makes it possible to provide a fan with excellent durability and cooling performance at low cost.

Description

Fan with resin blades {A FAN WITH BLADES MADE OF RESIN}

The present invention controls the rotation of the engine cooling fan in a general industrial, household plastic fan or automobile by following the temperature change or the input rotation change around the outside, thereby automatically adjusting the cooling air volume according to the running state. It relates to a fan provided with a resin blade, such as a fluidic fan coupling device for supplying to the engine.

For example, a fluid fan coupling device for controlling an engine fan for cooling a radiator for cooling an engine coolant of an automobile is partitioned into a torque transmission chamber in which an oil reservoir and a drive disk are built by a partition plate. Thus, a dam is formed on a part of the inner circumferential wall surface of the housing facing the outer circumferential wall portion of the drive disk in which the oil at the time of rotation is collected, and a circulating discharge path from the torque transmission chamber side to the oil storage chamber at the same time, When the temperature exceeds the set value, the oil supply adjusting hole formed in the partition plate is opened, and when the temperature is lower than the set value, the valve member closing the oil supply adjusting hole is interlocked with the deformation caused by the temperature change of the temperature sensing body installed in the housing. It is provided inside, and the effective contact of oil in the torque transmission clearance part in a torque transmission chamber is provided. To increase or decrease the area, it is common to control the torque transmission from the rotary shaft checheuk toward the driven side of the housing which is a structure for rotating the cooling fans.

The cooling fan in the fluidic fan coupling device of such a configuration is made of metal or resin. Since the resin fan is lighter than the metal fan, high vibration absorption, low noise and low cost, many plastic fans are employed. have. 24 and 25 illustrate such a fan made of resin, and a plurality of (usually, 4 to 10) are provided on the outer circumferential surface of the annular fan boss portion 311, and the annular fan boss portion ( On the outer circumferential surface of 311, a plurality of fan blades 312 (usually about 4 to 10) are provided. The fan is made of a plastic (synthetic resin) injection molded body, and the root portion of the fan blade 312 is attached with a certain angle of inclination at an angle with respect to the axis of the boss portion 311, and at the same time, the fan The blade 312 itself is twisted as it goes from the base portion 313 to the tip edge thereof, and has a shape having a gradually small angle of attack. The fan is attached to a metal insert 314 mounted to the housing. On the other hand, the metal insert 314 has an annular flange portion of which the tip portion is bent at a right angle and a flat portion having no flange portion.

In addition, the blades of the resin fan include PP, PPG (G: glass fiber), N (nylon), NG (G: glass fiber), PP has the lowest strength, and PPG, N, NG It is strongest in order, PP is the cheapest, and PPG, N, and NG.

Generally, the resin fan in the said fluid-type fan coupling apparatus etc. is integrally molded by the resin blade part of the steel plate spider part. At the time of manufacture, the shaping of the resin blade is performed at a melting point of about 270 ° C., and then cooled. However, when the engine is used, the heat generated from the fan coupling device is inserted into the resin blade at a high temperature by inserting the fan coupling device. The resin temperature of the portion close to, i.e., the blade base becomes a high temperature of about 230 ° C. For this reason, excessive stress is generated in the portion close to the fan coupling device of the resin blade by the difference between the coefficient of thermal expansion of steel and the resin (the coefficient of thermal expansion of steel is 1/10 of the resin). Further, during rotation, the fan blades are subjected to centrifugal force, torsion due to wind pressure, bending moments due to vibration, and the like, so that stress concentrates on the root portion of the blade. This stress is largely generated in the vicinity of the anti-rotation hole, which is the force for turning the blade, especially the boss, and the large stress caused by the large centrifugal force generated by the large volume of the boss itself affects the strength and causes the boss between the blade and the blade. There was a possibility of cracking. If the boss is present, the cooling wind around the fan coupling device is stagnant, the air volume decreases, the wind speed decreases, and cooling is not sufficient, resulting in an increase in the temperature of the silicone oil or the bearing of the fan coupling device, resulting in a decrease in durability. do.

On the other hand, Japanese Utility Model Publication No. 48-20657 proposed by the Applicant has a metal blade and a blade made of resin, wherein the resin blades are independently provided in the metal attachment portion. The fan which made into a structure is described. In other words, the fan is formed by integrally molding a resin blade in a spider part integrally installed on a metal disk. Since there is no annular boss, each blade can be individually deformed and can change with temperature and speed. The durability of the fan is improved, and the centrifugal force does not cause breakage from the boss, and the cooling wind around the fan coupling device is easily flowed at an angle, which increases the air volume and the wind speed, thereby improving cooling performance. .

However, in the case of this type of fan, the number of blades cannot be increased simply, so that the air volume and the wind pressure cannot be effectively increased, and the degree of freedom of uneven disposition of the blade spacing is low, and the pitch noise can be reduced. In addition, since there is a large space between the blades, there is a problem that the noise in the engine room is transmitted to the front surface of the vehicle without being reflected on the back surface of the blade, resulting in high engine noise.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and in a fan in which a resin blade is independently provided on a metal disk, the fan is caused by stress concentration during rotation of the fan and heat shrinkage of the material. By preventing cracks, the fan's durability and cooling performance can be improved, and the number of blades can be easily increased, so that the air volume and wind pressure can be effectively increased, and the degree of freedom of uneven placement of blade intervals is increased. It is an object of the present invention to provide a fan having a blade made of resin which can reduce the pitch noise and exhibit the effect of reducing the engine noise of the vehicle front surface.

1 is a front conceptual view showing a first embodiment of a fan with a resin blade according to the present invention.

FIG. 2 is a longitudinal cross-sectional view taken along the line A-A of FIG.

3 is a front conceptual view showing the second embodiment similarly.

4 is a longitudinal cross-sectional view on the line B-B in FIG.

FIG. 5 is a partial perspective conceptual view showing a third embodiment similarly. FIG.

FIG. 6 is a partial cross-sectional conceptual view similarly illustrating the fourth embodiment.

7 is a partial cross-sectional conceptual view similarly showing the fifth embodiment.

8 is a partial cross-sectional conceptual view similarly illustrating the sixth embodiment.

9 is a partial front conceptual view illustrating the seventh embodiment in the same manner.

10 similarly shows an eighth embodiment, in which (a) and (b) are some front conceptual views.

11 similarly shows a ninth embodiment, wherein (a), (b), (c) and (d) are partial perspective views.

12 similarly shows a tenth embodiment, wherein (a), (b), (c) and (d) are some perspective views, and (e) is a partial sectional view.

Fig. 13 similarly shows an eleventh embodiment, wherein (a), (b) and (c) are partial perspective views.

14 similarly shows a twelfth embodiment, wherein (a), (b) and (c) are some front conceptual views.

15 is a partial cross-sectional conceptual view similarly illustrating the thirteenth embodiment.

FIG. 16 is a front conceptual view showing a fourteenth embodiment in the same manner. FIG.

17 is a longitudinal cross-sectional view taken along the line C-C in FIG.

18 is a perspective conceptual view, similarly showing the fifteenth embodiment.

19 is a partial cross-sectional conceptual view similarly illustrating the sixteenth embodiment.

20 is a perspective conceptual view showing a seventeenth embodiment in the same manner.

21 is a perspective cross-sectional conceptual view similarly illustrating the eighteenth embodiment.

FIG. 22 is a perspective cross-sectional conceptual view showing part of the nineteenth embodiment in a similar manner. FIG.

23 is a partial cross-sectional conceptual view similarly illustrating the twentieth embodiment.

It is a front view which shows an example of the conventional resin pan.

FIG. 25 is a partially enlarged cross-sectional view on a line D-D in FIG. 24.

<Explanation of symbols for main parts of drawing>

11: disc

11-1: Spider part

12: blade

A fan with a resin blade according to the present invention is a fan in which a resin blade is independently provided on a metal disk, wherein the first embodiment welds a metal spider to a metal disk as a separate member. , A rivet, a bolt, or the like, and a resin blade formed integrally with the spider portion.

In the second embodiment, the metal spider portion for one resin blade is made of two pieces for the front edge and the rear edge, and is attached to the metal disk by welding, rivets, bolts, etc. It characterized in that the molded integrally.

In the third embodiment, the spider portion made of high strength resin is integrally formed on a metal disk, and the resin blade is integrally formed on the spider portion.

In a fourth embodiment, a high-strength resin spider portion is attached to a metal disk with a rivet, a bolt, or the like, and the resin blade is integrally molded.

In the fifth embodiment, a resin blade integrally molded with the spider portion is provided so as to overlap with an adjacent resin blade.

The sixth embodiment bends the spider portion in a zigzag shape in the forward direction of the rotational direction, and has an integrally molded forward blade type resin blade that protrudes forward in the rotational direction with a long outer peripheral edge.

In the seventh embodiment, the spider portion is bent in a square shape in the forward direction of the rotational direction, and the spider blade is formed integrally with the forward blade type projecting forward in the rotational direction so that the outer peripheral edge thereof is not long.

In the eighth embodiment, any one of reinforcing ribs, reinforcing pins, reinforcing beads, and reinforcing beams is provided on the metal disk to increase rigidity.

In a ninth embodiment, an integral or separate heat dissipation fin or a heat dissipation hole is formed in a metal disk.

In a tenth embodiment, the angle setting portion of the resin blade is provided on the metal disk side, and the spider portion is attached to the angle setting portion by rivets, bolts, or the like.

In an eleventh embodiment, the angle setting part is formed in one piece or in a separate form.

In a twelfth embodiment, a part of the disk side end portion of the resin blade that is integrally molded and attached to the spider portion is wrapped in the metal disk.

A thirteenth embodiment is a fan in which a resin blade is independently provided on a metal disk, wherein the resin blade in which the spider portion and the blade portion are made of the same high-strength resin on the metal disk It is characterized by the configuration in which the spider portion is attached by rivets, bolts or the like.

A fourteenth embodiment comprises a metal attachment portion made of an independent spider portion, and the resin blade is integrally molded so that the blade base portion is ring-shaped in each spider portion so as to have no disc.

In a fifteenth embodiment, the spider portion is bent in a square shape in the forward direction of the rotational direction, and the outer blade edge is long, and the forward blade type resin blade protruding forward in the rotational direction is integrally formed.

A sixteenth embodiment is formed by integrally molding a forward blade type resin blade that protrudes forward in the rotational direction such that the spider portion is bent in a forward direction in the rotational direction so that the outer periphery edge is not long. .

In the present invention, the fan with the resin blades shown in Figs. 1 and 2 has a structure in which the resin blades are independently provided on the metal attachment portion, and the structure is a metal insert-type spider on a metal disk. The parts are connected by welding, rivets, bolts, and the like, and the resin blade is integrally formed in the insert part of the spider part, and the metal spider part 11-1 corresponds to each blade on the plate-shaped metal annular disk 11. The fan is attached to the position by welding, rivets, bolts, etc., and the resin blade 12 is formed by integrally molding all the blades or all the blades in the insert portion of the spider portion 11-1. Also in the case of a fan, each resin blade 12 is attached with an angle of inclination inclined at a predetermined angle with respect to the central axis. In addition, a plurality of through holes 11-1a are formed in the spider portion 11-1 as described above, and the through holes 11-1a exert an anchoring effect on the resin injected and act on the blade base. It can withstand the tensile force against the centrifugal force (Fig. 2). Alternatively, the resin blade 12 may be first injected into the insert portion of the spider portion 11-1, and then attached to the annular disk 11.

The fan with the resin blades shown in FIGS. 3 and 4 is a variation of the fan with the resin blades shown in FIGS. 1 and 2, and the metal spider portion 21-1 is formed on the plate-shaped annular disk 21. ) Is attached to a position corresponding to each blade by welding, rivets, bolts, and the like, and the resin blades 22 are collectively integrated so that the blade base portion is ring-shaped to the insert portion of the spider portion 21-1. The fan is formed by forming a mold, and the ring portion is indicated by reference numeral 22-1. Also in this fan, each resin blade 22 is attached with a certain angle of inclination with respect to the central axis at a predetermined angle. In addition, a plurality of through holes 21-1 a are formed in the spider portion 21-1 as described above. The through holes 21-1 a exert an anchoring effect on the resin into which the through holes 21-1 a are injected. It is designed to withstand the tensile force against the centrifugal force acting (Fig. 4).

The fan with the resin blade shown in Fig. 5 is a metal insert-type spider portion for one resin blade, which is attached to the metal disk by welding, rivets, bolts, etc., using two pieces for the front edge and the rear edge. The resin blade is integrally molded to the piece, and the metal spider portion for one resin blade 32 is composed of two metal spider portions 31-1 having different bending or tightening depths for the front edge and the rear edge. The two pairs of spider portions 31-1 are attached to the plate-shaped annular disk 31 by welding, rivets, bolts, and the like, and a resin blade (inserted into the insert portion of the spider portion 31-1). 32) is a fan formed by integrally molding each blade or all the blades together. Also in this fan, each resin blade 32 is attached with a certain angle of inclination with respect to the central axis at a predetermined angle. In addition, a plurality of through holes 31-1 a are formed in the spider portion 31-1 as described above, and the through holes 31-1 a exert an anchoring effect on the resin injected, and act on the blade underfoot part. It is designed to withstand the tension against centrifugal force. In the case of the fan, the metal spider portion is composed of two pieces for the front edge and the rear edge, so that not only the weight is reduced compared to the one spider portion, but also the torsion moment acting on the blade base portion during rotation. We exert effect to be strong. In addition, the metal spider part 31-1 may use the same shape in a reverse direction at the front edge and the rear edge. In addition, the resin blade 32 may first be molded into the insert portion of the spider portion 31-1, and the other end of the spider portion 31-1 may be attached to the annular disk 31 from behind.

The fan provided with the resin blade shown in Fig. 6 is provided with a spider portion insert-molded with a nylon sole or a high strength resin such as PP or nylon reinforced with a fiber, and the insert portion of the spider portion is made of PP or nylon sole. The blade is integrally molded with resin having a lower strength and lower strength than the same spider part, and the high strength resin spider 41-1 is integrally formed at the position corresponding to each blade on the plate-shaped metal annular disk 41. And a fan formed by integrally molding all of the inserts of the spider portion 41-1 by integrally molding the resin blades 42 which are cheaper than the spider portion such as PP and have a lower strength. In other words, the fan is made of metal to be attached to a counterpart such as an engine, a high strength resin is used for the blade base portion, and the blade portion with a small load is made of a low cost resin. Therefore, in the case of the fan, the use of high-cost metal plate and nylon alone or high-strength resin such as fiber-reinforced PP or nylon can be reduced, so that the cost can be reduced and the difference in thermal expansion coefficient between the materials is small. Effects such as reduction of thermal stress and reduction of stress concentration to external forces such as impact and vibration can be obtained.

Also in this fan, each resin blade 42 is attached with a certain angle of inclination inclined by a predetermined angle with respect to the central axis. As described above, the spider portion 41-1 is provided with a plurality of through holes 41-1a, and exhibits an anchoring effect on the resin into which the through holes 41-1a are injected, thereby providing a blade underfoot portion. It is able to withstand the tensile force against centrifugal force acting on.

The fan provided with the resin blade shown in FIG. 7 is a plate-shaped annular disk formed by attaching a high-strength resin spider portion to a metal disk with a rivet, a bolt or the like, and integrally molding the resin blade to the spider portion. Nylon 51 or the above-mentioned high-strength resin spider 51-1, such as fiber reinforced PP or nylon, is attached to 51 at positions corresponding to each blade with rivets, bolts, and the like. It is a fan formed by integrally molding or shaping each blade of the resin blade 52, which is cheaper and lower in strength than the spider portion 51-1 such as PP or nylon alone, in the insert portion 1). Reference numeral 52-1 denotes a boss portion provided in each blade base portion. Alternatively, the resin blade 52 may be first molded into the insert portion of the spider portion 51-1, and then the other end of the spider portion 51-1 may be attached to the annular disk 51.

The fan with the resin blade shown in FIG. 8 shows a fan without the boss portion 52-1 of the fan with the resin blade shown in FIG. 7, the structure of which is similar to that of FIG. The above-mentioned nylon alone or a high strength resin spider portion 61-1 such as PP or nylon reinforced with fiber is attached to the metal annular disk 61 at a position corresponding to each blade with rivets, bolts, and the like. Each of the insert parts of (61-1) is formed by integrally molding or shaping each of the blades of resin blades 62, which are inexpensive and low-strength, than the spider parts 61-1 such as PP or nylon alone. The fan has no boss in the base of the blade. Alternatively, the resin blade 62 may be first molded into the insert portion of the spider portion 61-1, and then the other end of the spider portion 61-1 may be attached to the annular disk 61.

Even in the fan with the resin blades shown in Figs. 7 and 8, the resin blades 52 and 62 are attached with a certain angle of inclination with respect to the central axis, respectively. In addition, a plurality of through holes 51-1a and 61-1a are formed in the insert portions of the spider portions 51-1 and 61-1, and the through holes 51-1a and 61-1a are formed as described above. The anchoring effect on each of the injected resins can be exerted to withstand the tensile force against the centrifugal force acting on the blade base. In the case of the fan as well, as in the fan shown in Fig. 6, the use of high-cost metal plates and high-strength resins such as nylon and fiber-reinforced PP or nylon can be reduced, so that the cost can be reduced. Effects of reducing the thermal stress and reducing the stress concentration to external forces such as shock and vibration can be obtained as the difference in thermal expansion coefficient between the two is small.

The fan provided with the resin blade shown in FIG. 9 is a resin blade adjacent to the resin blade 12 integrally molded to the spider part 11-1 in the fan shown in the said FIGS. 1 and 2, for example. 12), the metal spider portion 71-1 is attached to the plate-shaped metal annular disk 71 by welding, rivets, bolts, or the like at positions corresponding to the respective blades. The resin blade 72 is integrally molded for each blade or collectively as a whole, as the resin blade 72 overlaps the resin blade 72 adjacent to the front end side of the spider portion 71-1. The fan is configured so that there is no gap between the blade and the blade. Also in this fan, each resin blade 72 is attached with an angle of inclination inclined by a predetermined angle with respect to the central axis. In addition, in the spider portion 71-1, a plurality of through holes 71-1a are formed in the same manner as described above, and exhibit the anchoring effect with respect to the resin into which the through holes 71-1a have been injected. It is able to withstand the tensile force against centrifugal force acting on.

In the case of this fan, the number of blades can be increased by overlapping the resin blades 72, so that the air volume and the wind pressure can be increased, and the degree of freedom in uneven arrangement of the blade intervals is increased, thereby reducing the pitch noise. . In addition, since there is no space between the blades projected on the blade rotation surface, the noise in the engine room necessarily impinges on the back of the blade and is reflected and returned once, so that no direct transmission sound occurs, so that the engine noise on the front surface of the vehicle is reduced. . In particular, since the blade is made of a resin having good vibration absorption, it is attenuated at the time of reflection and is more effective.

The fan provided with the resin blade shown in FIG. 10 is a so-called forward blade type resin blade in which the spider portion is bent in a zigzag shape in the rotational direction forward, and the outer peripheral edge of the spider portion is long and the tip protrudes in the rotational direction forward. The outer blade edge is not formed long and the spider blade is formed by integrally forming a forward blade type resin blade which protrudes forward in the rotational direction, and (a) is shaped like a plate-shaped metal annular disk 81 in the rotational direction forward. The metal spider portion 81-1, which is bent, is attached to the position corresponding to each blade by welding, rivets, bolts, and the like, and the tip portion of the square spider portion 81-1 is in the rotational direction forward. The fan which formed the so-called forward blade type resin blade 82 which protruded was formed by integrally shape | molding every blade or all blades collectively, (b) is a forward blade type resin blade 82 whose tip protrudes forward in the rotational direction so that the outer peripheral edge of the spider portion 81-1 attached to the annular disk 81 is not long. Denotes a fan configured by integrally molding each blade or the whole blade collectively. Also in the case of the fan shown to said (a), (b), each resin blade 82 is attached with some angle of inclination which inclined predetermined angle with respect to the center axis line. In addition, in the spider portion 81-1, a plurality of through holes 81-1a are formed in the same manner as described above, and exhibit the anchoring effect on the resin into which the through holes 81-1a are injected, and thus the blade bottom portion. It is able to withstand the tensile force against centrifugal force acting on.

In the case of the fan shown in (a) and (b) of FIG. 10, the blades are forward-bladed, so that the noise can be reduced, and the wind pressure center near the outer periphery of the blade with respect to the attachment portion between the disk and the spider member. The large eccentricity between the blade and the blade causes a large torsional moment.However, the reinforcement effect of the spider curved in the rotational direction can minimize the distortion and prevent the blade tip and the radiator from interfering. In addition, in the case of the fan shown in (a), the blade outermost circumference can be lengthened, and the air volume can be increased, and in the case of the fan shown in (b), the blade shown in (a) Since the outermost circumferential length is not long, the number of blades can be made larger than that of the fan shown in (a), high wind pressure can be obtained, and the outer circumferential mass is small, and thus it can withstand high speed rotation I show the effect that I can lose.

In the fan with the resin blade shown in Fig. 11, in all the fans shown in Figs. 1 to 10, the disc is fritted at the contact portion with the mating member due to the floating phenomenon of the disc due to the lifting force of the blade. (fretting) In order to prevent abrasion, reinforcing ribs or beads are provided between the mounting holes of the disk and the mating member to increase the rigidity, and (a) shows a part of the disk in the annular disk 91 made of metal. Is a fan which protrudes convexly in the circumferential direction to form reinforcing beads 91-1a, and (b) is a reinforcing L-shaped beam 91 extending in the circumferential direction on at least one surface of the metallic annular disk 91. -1b) is a fan with welding, soldering, rivets, bolts, etc. (c) is a fan which formed the inner peripheral rib 91-1c in the inner peripheral edge part of this metal annular disk 91, (d) is the outer peripheral part in the outer peripheral edge part of this metallic annular disk 91 It is a fan in which the rib 91-d was formed.

In the case of these fans, the rigidity is increased by reinforcing ribs or beads between the mounting holes of the disk with the mating member, so that the floating of the disk hardly occurs due to the lifting force of the blade, thereby preventing fritting wear of the disk. can do.

Fans with the resin blades shown in FIG. 12 are heat dissipation fins integral with or separate from the disks in order to prevent heat transfer from the metal disks to the resin blades in all the fans shown in FIGS. Alternatively, a fan having heat dissipation holes formed therein and having a resin blade shown in FIG. 12A is welded and soldered to the at least one surface of the metal disk 101 by a pin 101-1a having an L-shaped cross section. , A fan attached radially by rivets, bolts, or the like, and a fan equipped with a resin blade shown in FIG. 12 (b) includes a pin 102-1a having a shape formed by cutting a metal disk 102 together with a hole. The fan provided radially, the fan provided with the resin blade shown in FIG.12 (c), The fan which provided the heat dissipation hole 103-1a in the metal disk 103, and FIG.12 (d) Fans with resin blades shown in Fig. The fan having the heat dissipation hole 104-1a formed by notches in the 104, and the fan provided with the resin blade shown in FIG. 12E, have irregularities 105-1a applied to the metal disk 105. The formed fan is shown, respectively.

The fan provided with the resin blade shown in FIG. 13 is a structure in which the angle setting portion of the resin blade is provided on the metal disk side, and the flat and simple spider portion is attached to the angle setting portion by rivets, bolts, or the like. a) forms the integral angle setting part 111-1a by the fastening process to the metal disk 111 itself, and welds the spider part 111-1 to the inclined surface of this angle setting part 111-1a. , A rivet, a bolt, or the like, and a fan formed by integrally molding the resin blade 112 in the insert portion of the spider portion 111-1, and (b) has a substantially triangular cross section on the metal disk 121. The angle setting part 121-1a comprised by the separate member of a shape is attached by welding, soldering, a rivet, a bolt, etc., and the spider part 121-1 is welded and riveted to the inclined surface of this angle setting part 121-1a. , A bolt or the like, and a resin bleed on the insert portion of the spider portion 121-1. The fan (c) formed by integrally molding the rod 122 is provided with a bitten protrusion (mini spider) at a predetermined angle on the metal disk 131 itself to form an integral angle setting portion 131-1a. And attach the spider portion 131-1 to the inclined surface of the angle setting portion 131-1a with welding, rivets, bolts, and the like, and attach the resin blade 132 to the insert portion of the spider portion 131-1. The fan formed by integrally forming is shown, respectively.

The fan provided with the resin blade shown in FIG. 14 is a resin attached integrally to the spider part in all the fans shown in FIGS. 1 to 13 in order to increase the wind pressure as the actual length of the blade undercarriage is increased. A part of the disk-side end of the blade is wrapped in a metal disk, (a) in the insert portion of the spider portion 141-1 attached to the metal disk 141 by welding, riveting, bolts, or the like. , A fan in which the resin blade 142 provided with the blade base portion 142-1 for wrapping the disk 141 is integrally attached to the disk 141, and (b) is welded, riveted, bolted or the like to the metal disk 151. The resin blade 152 having a shape different from that of the blade of (a), in which the blade base portion 152-1 to wrap the disk 151, is formed integrally with the insert portion of the attached spider portion 151-1. Fan, (c) is a metal Resin-formed blade 162-1 which wraps the disk 161 in the insert portion of the U-shaped spider 151-1 attached to the disc 161 by welding, rivets, bolts, or the like. The fan which attached the blade 162 integrally is shown, respectively.

The fan with the resin blade shown in Fig. 15 is formed of a metal-shaped annular disk 171 with a blade and spider part of which the spider part 172-1 and the blade part 172-2 are made of the same high-tensile resin. It is a fan in which the said spider part 172-1 of the blade 172 was attached with the rivet, the bolt, etc. As the resin of high tension, PPG, N, and NG can be used. In the case of this fan, since the blade and the spider part are integrally formed by simply attaching them to the annular disk 171 with rivets, bolts, or the like, the fan can be manufactured more easily than the fan using the spider part as a separate member.

The fan with the resin blades shown in FIGS. 16 and 17 is composed of a metal insert or a high strength resin attaching portion with an independent insert-type spider portion, and the entire resin blade is collectively formed so that the blade base portion is formed in a ring shape at each spider portion. In this case, the spider unit 181, in which the insert portion 181-1 is provided, is arranged at a desired interval on a concentric circle, and in this state, the insert portion 181- is formed. The fan which integrally formed the resin blade 182 so that the blade base part may ring-form in 1) part is comprised, The ring part is shown with the code | symbol 182-1. Also in this fan, each resin blade 182 is attached with a certain angle of inclination with respect to the central axis at a predetermined angle. Each of the spider portions 181 is provided with a plurality of through holes 181-1 a as described above, and the through holes 181-1 a exert an anchoring effect on the resin injected, and act on the blade base portion. It can endure the tensile force against centrifugal force. In addition, since the integrated fan can be directly attached to the input shaft or the fan coupling device by bolts using the attachment holes 182-2 formed in the respective spider portions 181, the conventional annular disk is unnecessary. . The ring portion 182-1 may not be provided.

The fan with the resin blades shown in FIGS. 18 to 20 exemplifies a means for connecting the disk and the blade. The fan with the resin blade shown in FIG. 18 is concave on both sides of the disk 191 made of metal. A blade connecting protrusion 191-1 having a portion 191-1a is provided, and on the other blade 192 side, there is a space portion into which the blade connecting protrusion 191-1 can be inserted and on both sides thereof. A flat cylindrical spider portion 192-1 made of resin having a recess 192-1a corresponding to the recess 191-1a is provided and is flat on the blade connecting protrusion 191-1. Two connecting pins 193-1, which can fit the spider portions 192-1 and firmly fit into the recesses 191-1a and the recesses 192-1a, and one plate member. It is a fan which assembled and assembled the connection member which protruded in parallel with each other in (193-2). In order to eliminate rattling of the connecting portion, the blade connecting protrusion 191-1 and the flat cylindrical spider portion 192-1 are further secured with bolts or the like.

The fan with the resin blade shown in FIG. 19 forms a coupling long hole 201-1 corresponding to the spider portion of each blade 202 on the metal disk 201 side, and the other blade 202. Side) has a click portion 202-1a to be fitted into the coupling hole 201-1 and a spider portion 202-1 having a slit 202-1b into which the disk 201 can be inserted. And the slit 202-1b of the spider portion 202-1 to fit the disk 201, and the click portion 202-1a of the tip portion of the spider portion 201 to the engaging hole of the disk 201. It is a fan connected by inserting it into 1). Also in the case of this fan, in order to eliminate the rattling of the disk 201 and the spider part 202-1, the disk 201 and the spider part 202-1 are further fixed with a bolt or the like.

The fan with the resin blade shown in Fig. 20 forms an elliptical hole 211-1 for coupling corresponding to the spider portion 212-1 of each blade 212 on the metal disk 211 side, On the other blade 212 side, a spider portion 212-1 having a coupling ellipse hole 212-1a of substantially the same size is provided at a position corresponding to the coupling ellipse hole 211-1. The part 212-1 can be superimposed on the disk 211, and can be firmly inserted into the coupling ellipse hole 211-1 on the disk side and the coupling ellipse hole 212-1a on the spider side. The fan is formed by assembling a connecting member in which two connecting pins 213-1 are protruded in parallel to one plate member 213-2. In the case where the coupling ellipse hole 211-1 formed on the disc 211 side is the source, the coupling hole is formed by at least two circles so that the spider part does not rotate. Also in the case of this fan, in order to eliminate the rattling of the disk 211 and the spider part 212-1, the disk 211 and the spider part 212-1 are further fixed by a bolt etc.

The fan provided with the resin blade shown in FIG. 21 is a meshing piece bent at right angles to the distal end portion of the spider portion 222-1 of each blade 222 in such a manner as to connect the blades using a two-piece disk ( 222-1a is provided, and a coupling hole for inserting the engaging piece 222-1a of the spider portion 222-1 into one disk plate 222-1 of the two-piece disk 221. 221-1a, sandwiching the spider portion 222-1 between the two disk plates 221-1 in a sandwich form, and engaging the pieces 222-1a provided at the tip of the spider portion. The fan is inserted into and connected to the coupling hole 221-1a formed in one disk plate 221-1. Also in this fan, the disk 221 and the spider 222-1 are further fixed by bolts or the like in order to eliminate rattling of the disk 221 and the spider 222-1.

The fan with the resin blade shown in Fig. 22 connects the blades using a three-piece disk. The disk 231, which consists of three disk plates 231-1, has a disk disk 231- in the center. 1) is provided with blade connecting projections 231-1a having recesses 231-1b formed on both sides thereof, and on the other blade 232 side, a click portion that can be hooked to the recesses 231-1b ( A flat spider portion 232-1 having a thickness substantially the same as that of the disk plate 231-1 having the 232-1a formed thereon, and for connection of a blade to the central disk plate 231-1 in connection. The click 232-1a of the spider part 232-1 is applied to the recess 231-1b of the projection 231-1a, and the remaining two disk plates 231-1 are sandwiched from both sides in the state. They overlap each other, and at the same time tighten together with bolts to form a fan. In the case of the fan using the three-piece disk, the two disk boards 231-1, which sandwich the central disk board 231-1, have a blade connecting protrusion 231-1a and a spider section 232-1. ), The blade connecting protrusion 231-1a and the spider portion having a width wider than that of the center disk plate 231-1 or having the same width as that of the center disk plate 231-1 so as to cover the connecting portion. The disk board provided with the projection part which covers only the connection part of (232-1) can be used. In the case of this fan, since the disk of the three-piece structure is integrated with a bolt or the like to fix the connecting portion of the disk and the spider portion, there is no rattling in the connecting portion. In addition, a three-piece disk can also be made into a two-piece disk in which two disk plates are integrated.

The fan with the resin blade shown in Fig. 23 forms a concave portion for connection on the spider portion side and connects it with the disk, and its structure thickens the spider portion 242-1 which is integrally formed with the blade 242. To form a recess 242-1a having a desired depth having a gap almost equal to the thickness of the metallic disk 241, and fitting the recess 242-1a to the metallic disk 241. The fitted portion is configured by combining with a rivet 243 (or bolt). Also in the case of this fan, since the disk 241 and the spider portion 242-1 are fixed by the rivet 243 (or bolt), there is no rattling in the portion.

As described above, the fan with the resin blade according to the present invention has the following effects.

(1) Since there is no continuous annular boss like a conventional fan, each blade can be deformed individually and can follow the temperature change or the speed change, so that it is not broken from the boss part by centrifugal force and the fan durability is improved. do.

(2) Since there is no continuous annular boss portion, the air flow rate and the wind speed of the cooling wind around the fan coupling device are increased to improve the cooling performance.

(3) Since the number of blades can be increased by wrapping the blades, the air volume and the wind pressure can be increased, and the degree of freedom of uneven placement of blade intervals can be increased, so that the pitch noise can be reduced, and further, the vehicle Engine noise on the front side can be reduced.

(4) By using a spider formed in a square shape, even when a large torsional moment acts on the blade, the torsional distortion of the blade end can be suppressed small by the spider member, and the interference between the blade tip and the radiator can be prevented. In addition, blades with a long outer circumference can increase the air volume, and the blades are forward-bladed, so that noise can be reduced. It is possible to increase, and it can be made with high wind pressure.

(5) By providing reinforcing ribs, reinforcing beads, and the like on the disk, corrosion wear due to the lift of the disk can be prevented.

(6) By providing heat radiating fins on the disks, heat transfer from the disks to the blades can be prevented, resulting in a long service life.

(7) By providing an integral or separate type angle setting portion in the disk, attachment of the fan blades is facilitated.

(8) Since the actual length of the blade base can be lengthened by wrapping the blade base on the disc, the air volume can be increased.

(9) By using a blade made of the same high-tensile resin and a blade made of the same high-strength resin and a resin blade made of an integral type, the fan can be manufactured more easily than a fan using a spider part made of a separate member.

(9) In the case of molding (molding) for each blade, the injection machine used can be miniaturized, so that the mold is small, easy to manufacture, and low in cost.

(10) The cost can be reduced because the amount of high-strength resin such as metal plate and nylon, which is expensive, can be reduced.

(11) As the difference in thermal expansion coefficient between materials is small, reduction of thermal stress and stress concentration to external forces such as impact and vibration can be reduced.

Claims (22)

In a fan in which a resin blade is independently provided on a metal disk, a metal spider part, which is a separate member, is attached to the metal disk by welding, rivets, bolts, and the like, and the resin blade is integrated in the spider part. Fan with a resin blade that is formed by molding. The metal spider portion for one resin blade is formed into two pieces for the front edge and the rear edge, and is attached to the metal disk by welding, rivets, bolts, etc., and the resin blade is attached to the two pieces of spider portion. A fan with a resin blade that is molded integrally. In a fan in which a resin blade is independently provided on a metal disk, the fan is formed by integrally molding a high-strength resin spider on the metal disk and integrally molding the resin blade on the spider disk. The fan is provided with a resin blade. In a fan in which resin blades are independently provided on metal disks, a high-strength resin spider portion is attached to the metal disk with rivets, bolts, and the like, and the resin blade is integrally formed on the spider disk. A fan with a resin blade that is formed by molding. The fan with a resin blade according to claim 1, wherein a resin blade integrally molded with the spider portion is provided so as to overlap with an adjacent resin blade. The resin blade according to claim 1, wherein the spider portion is bent in a zigzag shape in the forward direction of the rotational direction, and the outer blade edge is long and the resin blade of the forward wing type projecting forward in the rotational direction is integrally formed. Equipped fan. The resin blade according to claim 1, wherein the spider portion is bent in a zigzag forward direction in the rotational direction, and the spider blade is formed by integrally molding a forward blade type resin blade projecting forward in the rotational direction so that the outer peripheral edge thereof is not long. With fan. The fan with a resin blade according to claim 1, wherein any one of reinforcing ribs, reinforcing pins, reinforcing beads, and reinforcing beams is provided on the metal disk to increase rigidity. The fan with a resin blade according to claim 1, wherein a heat dissipation fin or a heat dissipation hole of an integral or separate type is formed in the metal disk. The fan with a resin blade according to claim 1, wherein an angle setting portion of the resin blade is provided on the metal disk side, and the spider portion is attached to the angle setting portion with a rivet, a bolt, or the like. The fan with a resin blade of claim 9, wherein the angle setting part is formed integrally or separately. The fan with a resin blade according to claim 1, wherein a part of the disk side end portion of the resin blade attached integrally to the spider portion is wrapped in the metal disk. In a fan in which resin blades are independently provided on metal disks, the spider parts of the resin blades having the spider part and the blade parts made of the same high tension resin are attached to the metal disk by rivets, bolts, or the like. The fan with a resin blade which is set as the structure. The blade connecting protrusion formed on the metal disk side is fitted with the cylindrical cylindrical spider portion provided on the blade side from the outside, and the blade connecting protrusion and the cylindrical spider portion are connected by a connecting member with a connecting pin. A fan with a resin blade formed by fixing a dragon projection and a cylindrical spider part with bolts, rivets, and the like. The resin blade which is formed by fitting and connecting the unevenness of the resin spider portion provided on the blade side to the blade coupling hole formed on the metal disk side, and fixing the disk and the resin spider portion with bolts or rivets. Equipped fan. The disk coupling hole formed on the metal disk side and the blade coupling hole formed on the resin spider portion on the blade side are connected to each other by connecting the connecting pins through the spider in a state where the spider portions are superimposed on the disk. A fan with a resin blade formed by fixing the spider part with bolts, rivets, or the like. The metal disk has a two-piece structure, and the resin spider portion on the blade side is inserted between the two disk plates, and the engaging click provided at the tip of the spider portion is inserted into the coupling hole formed on the disk side and connected. At the same time, a fan with a resin blade formed by fixing two disks and a spider part with bolts, rivets, or the like. The metal disk is made into three pieces, and the blade connecting protrusion formed on the central disk board is fitted with the unevenness of the resin spider section provided on the blade side, and the central disk board is fitted with two disk boards. The fan is provided with a resin blade that is configured by fastening the three disk plates with bolts, rivets and the like. A fan with a resin blade, wherein the resin spider portion provided on the blade side is thickened to fit a recess formed in the portion to a metal disk, and the stitched portion is joined by rivets or bolts. A fan provided with a resin blade comprising a metal attachment portion comprising an independent spider portion, wherein the resin blade is integrally molded such that the blade base portion is ring-shaped so as to have a disk. 21. The resin blade according to claim 20, wherein the spider portion is bent in a zigzag shape in the forward direction of the rotational direction, and the outer blade edge is long, and the resin blade is formed by integrally molding a forward blade type resin blade projecting forward in the rotational direction. Equipped fan. 21. The resin blade according to claim 20, wherein the spider portion is bent in a forward shape in the rotational direction forward and integrally molded with a forward blade type resin blade projecting forward in the rotational direction so that the outer peripheral edge thereof is not long. With fan.