CN108691804A - Turbine fan - Google Patents

Turbine fan Download PDF

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Publication number
CN108691804A
CN108691804A CN201810226980.5A CN201810226980A CN108691804A CN 108691804 A CN108691804 A CN 108691804A CN 201810226980 A CN201810226980 A CN 201810226980A CN 108691804 A CN108691804 A CN 108691804A
Authority
CN
China
Prior art keywords
welding
turbofan
fitting portion
blade part
blade
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201810226980.5A
Other languages
Chinese (zh)
Other versions
CN108691804B (en
Inventor
岩井晴义
礒部竜也
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nisshinbo Mechatronics Inc
Original Assignee
Nisshinbo Mechatronics Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nisshinbo Mechatronics Inc filed Critical Nisshinbo Mechatronics Inc
Publication of CN108691804A publication Critical patent/CN108691804A/en
Application granted granted Critical
Publication of CN108691804B publication Critical patent/CN108691804B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/08—Centrifugal pumps
    • F04D17/10—Centrifugal pumps for compressing or evacuating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/124—Tongue and groove joints
    • B29C66/1246—Tongue and groove joints characterised by the female part, i.e. the part comprising the groove
    • B29C66/12463—Tongue and groove joints characterised by the female part, i.e. the part comprising the groove being tapered
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/32—Measures for keeping the burr form under control; Avoiding burr formation; Shaping the burr
    • B29C66/322—Providing cavities in the joined article to collect the burr
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/02—Selection of particular materials
    • F04D29/023—Selection of particular materials especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/30—Vanes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/302—Particular design of joint configurations the area to be joined comprising melt initiators
    • B29C66/3022—Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined
    • B29C66/30223—Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined said melt initiators being rib-like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/08—Blades for rotors, stators, fans, turbines or the like, e.g. screw propellers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2230/00—Manufacture
    • F05D2230/20—Manufacture essentially without removing material
    • F05D2230/23—Manufacture essentially without removing material by permanently joining parts together
    • F05D2230/232—Manufacture essentially without removing material by permanently joining parts together by welding
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/40—Organic materials
    • F05D2300/44—Resins

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

The invention aims to provide a turbofan which can improve the welding strength of ultrasonic welding compared with the turbofan in the prior art. The turbofan is characterized in that a main plate or a shield provided with a plurality of welding embedding parts and blade parts with the same number as the plurality of welding embedding parts are respectively molded by thermoplastic resin, and then the main plate or the shield and the blade parts are assembled into a whole through ultrasonic welding, wherein the welding embedding parts are provided with wall parts which are vertically formed around the periphery of the blade parts inserted into the welding embedding parts, and inclined parts are arranged on the inner side surfaces of the bottom parts; the blade member is ultrasonically welded to the main plate or the shroud in a state of being inserted into the welding fitting portion and being in contact with the inclined portion.

Description

Turbofan
Technical field
The present invention relates to it is a kind of be equipped on air conditioner by the molding turbofan of thermoplastic resin, being related to one kind can be real The now turbofan of ideal weld strength.
Background technology
The turbofan of the prior art is fabricated by following three kinds of methods.
The first, be distinctly molded using thermoplastic resin fan main body that mainboard and multiple blades are integrally formed and shield it Afterwards, pass through the method for the combinations such as ultrasonic bonding;
The second, be distinctly molded over using thermoplastic resin shield the back side be integrally formed multiple blades fan main body and After mainboard, pass through the method for the combinations such as ultrasonic bonding;
Third, using the separately formed mainboard of thermoplastic resin, shield and multiple blades after, pass through ultrasonic bonding etc. In conjunction with method.
In each method, has the fitting portion coordinated with blade part in mainboard or shield.In the fitting portion Configure welding edge, will in conjunction with component contacted with the welding edge after, it is stressed while applying ultrasound in application Wave vibrates, then welding edge melting makes two components combine.
It, need to be in mainboard, shield and the blade for confirming the component parts as turbofan to improve the performance of turbofan While size after the combination of component, bond strength is improved.Production according to Fig. 9 (a), Fig. 9 (b), Fig. 9 (c) to the prior art Product illustrate.The turbofan of the prior art, the blade part 934 that shield is embedded in the fitting portion 924 of mainboard 92 carry out pre- group After dress, it is fabricated by ultrasonic bonding.Under pre-assembled state, wall portion 925 that blade part 934 passes through fitting portion 924 It is positioned, and its bottom 934B is in contact condition with welding edge 926.Triangular shape is omited in the section of welding edge 926, Have a row to two row in the bottom of fitting portion 924.In the assemble method using welding edge, to improve ultrasonic bonding When mutual component bond strength extend what weld length was limited by, therefore exist with the performance for improving turbofan and It cannot be satisfied the problem of requirement for improving weld strength.
Invention content
[Fa Mingsuoyaoxiejuewenti ]
In view of the situation, it can be improved and pass through the purpose of the present invention is to provide a kind of turbofan compared with the prior art The turbofan of the weld strength of ultrasonic bonding.
[Xie Juewentijishushouduan ]
To reach the purpose, the turbofan of first embodiment,
Distinctly be molded using thermoplastic resin have it is multiple welding fitting portions mainboards or shield, and with the multiple weldering After the blade part for connecing the identical quantity of fitting portion, mainboard or shield and blade part are assembled into one by ultrasonic bonding Body, wherein the welding fitting portion has the wall portion around the blade part for being inserted into welding fitting portion and vertically formed, and Has rake in bottom inside face;
The blade part is in the state of being inserted into the welding fitting portion and being contacted with the rake, with mainboard or shield Cover carries out ultrasonic bonding.
The turbofan of first embodiment has the following effects that:
Blade part is inserted into the welding fitting portion of mainboard or shield, is combined by ultrasonic bonding.It is tool to weld fitting portion Standby to vertically form with the composition of the wall portion around blade part, blade part can realize the positioning of high precision.In addition, Medial surface in the bottom of welding fitting portion has the rake around the edge part of blade part.The side of the bottom surface of blade part The entire surrounding of edge is contacted with the rake in the welding fitting portion.Because the edge part of blade part is with sharp shape shape At, therefore there are welding edges around the entire edge part of blade part.Therefore, the entire surrounding of blade part and welding are embedding The rake in conjunction portion welds.Therefore, compared with the prior art, weld length is elongated, and weld strength is improved significantly.
The turbofan of second embodiment, on the basis of first embodiment, wherein in the bottom of the welding fitting portion, Has the band-like protrusion contacted with the blade part.
Turbofan according to second embodiment is being welded when the rake of blade part and welding fitting portion welds During the bottom of blade part contacted with band-like protrusion, to prevent excessively welding, while can ensure that turbofan Final size.
The turbofan of 3rd embodiment, on the basis of the first embodiment or the second embodiment, wherein in the welding Has space between the bottom of fitting portion and the blade part after welding.
The turbofan of 3rd embodiment has the following effects that:
Has space between the bottom and the blade part of welding of welding fitting portion.The space can be used as mistake when welding Spend the receiving space of the resin of melting.The resin excessively melted when welding is contained in the space, to interfere weld part The welding divided.Therefore, it is easy to ensure that the final size of turbofan, and it can stablize and ensure original weld strength.
Description of the drawings
Installation shape when Fig. 1 is the mainboard for the turbofan for indicating assembling the embodiment of the present invention and has the shield of blade The oblique view of state;
Fig. 2 is the oblique view of the completion status for the turbofan for indicating the present embodiment;
Fig. 3 is the whole skeleton diagram (oblique view) of the mainboard of the turbofan of the present embodiment;
Fig. 4 is the whole skeleton diagram (plan view) of the mainboard of the turbofan of the present embodiment;
Fig. 5 is the definition graph of the welding fitting portion of the mainboard for the turbofan for being configured at the present embodiment;
The magnified partial view for the welding fitting portion that Fig. 6 is Fig. 5;
Fig. 7 (a), Fig. 7 (b) be ultrasonic bonding the present embodiment turbofan before and after state definition graph;
Fig. 8 is the enlarged drawing of the supersonic welding socket part of the turbofan of the present embodiment;
Fig. 9 (a), Fig. 9 (b), Fig. 9 (c) are the form definition graph of welding edge when welding the turbofan of the prior art.
Drawing reference numeral explanation
10:Turbofan;
12:Mainboard;
13:Shield;
92:Mainboard (to the product of the prior art);
121:Boss;
122:Bushing;
124:Weld fitting portion;
125:Wall portion;
126:Space;
128:Inclined surface;
129:Protrusion;
131:Shield;
132:Opening portion;
133:Peripheral portion;
134:Blade part;
134B:Bottom;
134C:Edge part;
134S:Side;
924:Fitting portion (to the product of the prior art);
925:Wall portion (to the product of the prior art);
926:Welding edge (to the product of the prior art);
934:Blade part (to the product of the prior art);
934B:Bottom (to the product of the prior art);
M:Weld part;
N:Molten resin.
Specific implementation mode
In the following, being illustrated to the turbofan of the present invention according to Fig. 1 to Fig. 8.
Installation shape when Fig. 1 is the mainboard for the turbofan for indicating assembling the embodiment of the present invention and has the shield of blade The oblique view of state;Fig. 2 is the oblique view of the completion status for the turbofan for indicating the present embodiment;Fig. 3 is the turbine of the present embodiment The whole skeleton diagram (oblique view) of the mainboard of fan;Fig. 4 is the whole skeleton diagram (plane of the mainboard of the turbofan of the present embodiment Figure);Fig. 5 is the definition graph of the welding fitting portion of the mainboard for the turbofan for being configured at the present embodiment;Fig. 6 is that the welding of Fig. 5 is embedding The magnified partial view in conjunction portion;Fig. 7 (a) is the definition graph of the state before the turbofan of ultrasonic bonding the present embodiment;Fig. 7 (b) For the definition graph of the state after ultrasonic bonding;Fig. 8 is the enlarged drawing of the supersonic welding socket part of the turbofan of the present embodiment.
Turbofan so far is distinctly molded each component using thermoplastic resin and is assembled by ultrasonic bonding It is manufactured in conjunction with (welding).It, will be to the composition and structure of each component of the weld strength to improve the turbofan after welding Shield is integrally formed the shield and mainboard for having blade of blade part (calling in the following text " blade part "), is combined by ultrasonic bonding It is illustrated for turbofan.In addition, present invention is not limited by this embodiment.
Fig. 1 shows the states that installation constitutes the discoid mainboard 12 of turbofan 10, the shield 13 for having blade.Fig. 2 For 10 completion status of turbofan of the present embodiment.The shield 13 for having blade is forming the extraneous air intake line of fan Have the multiple blade parts 134 combined with mainboard 12 on shield 131.Each component uses thermoplastic resin extrusion molding out of the ordinary. Have the shield 13 of blade blade part 134 be inserted into be configured at mainboard 12 peripheral portion multiple positions welding fitting portion 124 It is assembled.Each component is combined by ultrasonic bonding.In addition, the structure of blade part 134 is by <3>Middle detailed description, but such as Fig. 1 institutes Show have the pressure surface of push wind and the suction surface as its back side.In the explanation of this embodiment, to blade part 134 from its Top-to-bottom has the case where same shape (straight) and illustrates.In addition, the shape of blade part 134 is to realize turbofan Diffusion performance, pressure surface and suction surface can also be required curve form.
<1>The structure of mainboard
As shown in Figures 1 to 4, mainboard 12 has the bushing 122 of centrally located portion and the standing shape for covering motor, and Positioned at bushing 122 central part and be inserted into fixed boss 121 along short transverse (upper and lower directions of Fig. 1 and Fig. 2) for motor drive shaft. In addition, as shown in Figures 3 and 4, having quantity identical as having the blade part 134 of shield 13 of blade in the peripheral portion of mainboard 12 The welding fitting portion 124 being inserted into for blade part 134 when being assembled with the shield 13 for having blade.
The composition for welding fitting portion 124 is as shown in Figures 5 and 6.Including having certain altitude and thickness and being centered around mainboard Wall portion 125, inclined surface 128 on 12 and band-like protrusion 129.Inclined surface 128 is around the bottom of the medial surface of welding fitting portion 124 Portion.In addition, it is flat condition above that band-like protrusion 129, which is configured at the bottom of welding fitting portion and its,.In addition, though in this implementation In example, the band-like protrusion 129 welds fitting portion 124 at one and has one, but can also the shapes such as circle have it is multiple. The blade part 134 of the shield 13 for having blade as shown in Figure 1 is inserted into welding fitting portion 124.The bottom 134B of blade part 134 is Flat shape.When blade part 134 is inserted into the welding fitting portion 124, then the peripheral portion of the bottom 134B of the blade part 134 The entire surrounding of (edge part) 134C is in the state contacted with the inclined surface 128 for the welding fitting portion 124 for being configured at mainboard 12.
Fig. 7 (a) is the state before mainboard 12 and blade part 134 are combined by ultrasonic bonding.As shown in Fig. 7 (b), weldering After binding beam, the bottom 134B for being inserted into the blade part 134 of welding fitting portion 124 connects with the flat part on band-like protrusion 129 Touch, though to by ultrasonic bonding when plus-pressure if can make each blade part 134 with stable posture solder bond in master Plate 12 and become state as shown in Figure 8.
<2>Has the structure of the shield of blade
The shield 13 for having blade is illustrated according to Fig. 1.Has the shield 13 of blade by shield 131 and blade part 134 are constituted.As shown in Figure 1, having big opening portion 132 in central portion.The circumferentially slightly inclined face in direction of peripheral portion 133.Separately Outside, has the welding fitting portion 124 (please referring to Fig.1) of quantity identical as the blade part 134 of mainboard 12 is inserted into peripheral portion 133.
<3>The structure of blade part
As shown in Fig. 7 (a), Fig. 7 (b), it is inserted into each blade part 134 of the shield 13 for having blade of welding fitting portion 124 The peripheral portion of bottom 134B of part be made of sharp edge part.The edge part 134C has the shield of blade in welding Play the role of welding edge when cover and mainboard.In addition, as shown in Figure 1, the shape of blade part 134 is to push the pressure surface of wind And its opposing face, have same shape (directly) from the top-to-bottom of blade part 134.Blade part 134 is real because being multiple The lightweight of existing turbofan can realize village hollowing by the methods of blow molding.
<4>Turbofan is assembled
As shown in Figure 1, by the mainboard 12 of the composition, having the shield 13 of blade, by chimeric to the welding of mainboard 12 The blade part 134 for the shield 13 that the insertion of portion 124 has blade carries out pre-assembled.Product pre-assembled in this way calls workpiece in the following text.At this point, As shown in Fig. 7 (a), the edge part 134C of each blade part 134 it is entire around be in and each welding fitting portion 124 of mainboard 12 The state that inclined surface 128 contacts.As shown in Fig. 7 (a), has the edge of the bottom 134B of the blade part 134 of the shield 13 of blade Portion 134C is made of sharp edge shape.Entire surrounding and the medial surface around welding fitting portion 124 of the edge part 134C Bottom inclined surface 128 contact.In addition, due to guidings of the side 134S of blade part 134 by the wall portion 125 of welding fitting portion Positioning, the workpiece before ultrasonic bonding can ensure that stable posture.
By the pre-assembled Work mounting on the fixture of ultrasonic welder.By the shield 13 for having blade of workpiece Certain position ultrasonic welder soldering tip (horn) contact pressurization, then be equivalent to the side of the blade part 134 of welding edge Edge 134C and the partial melting of the inclined surface 128 of welding fitting portion are combined into the state as shown in Fig. 7 (b), to make work Part is integrally formed.Can as shown in Figure 1 pacify mainboard 12 by Work mounting in the method on the fixture of ultrasonic welder On fixture, it can also be that reversion will be provided with the shield of blade and be installed on fixture.
Further, ultrasonic bonding process is illustrated with Fig. 8.(it please join with the inclined surface 128 of welding fitting portion 124 Examining Fig. 7 (a), Fig. 7 (b)) the edge part 134C of blade part 134 of contact plays the role of welding edge, with melted edge portion The contact site of 134C and inclined surface 128, blade part bottom 134B decline is contacted with band-like protrusion 129, edge part 134C at For weld part M.
In addition, having space 126 on the periphery of the band-like protrusion 129 for the bottom for being configured at welding fitting portion.It is welding In the process, the molten resin N that the edge part 134C of blade part 134 and the combination of inclined surface 128 are not involved in molten resin will gather Collection is in the space 126 positioned at its underpart.Therefore the resin excessively melted interferes welding, to reduce weld strength or cause to weld The non-uniform problem of size after connecing can be all eliminated.
It is had the following effects that according to the present invention:Because of not excessive welding, to can ensure that the turbine wind after welding The defined product size of fan.In addition, compared with showing for welding edge welding is utilized as shown in Fig. 9 (a), Fig. 9 (b), Fig. 9 (c) There is the product of technology, weld length is elongated, to be remarkably improved weld strength.In addition, by welding the band in fitting portion 124 The effect of the protrusion 129 of shape, the blade part 134 and mainboard 12 for having the shield 13 of blade can be in the positions pair for ensuring each component Together, with stable posture by equably ultrasonic bonding.The performance of the turbofan obtained in this way is apparently higher than the prior art Product.

Claims (3)

1. a kind of turbofan is distinctly molded the mainboard or shield for having multiple welding fitting portions using thermoplastic resin, and After the blade part of the identical quantity of the multiple welding fitting portion, by ultrasonic bonding by the mainboard or the shield It is assembled integrally with the blade part, it is characterised in that:
The welding fitting portion has the wall around the blade part for being inserted into the welding fitting portion and vertically formed Portion, and have rake in bottom inside face;And
The blade part is in the state of being inserted into the welding fitting portion and being contacted with the rake, with the mainboard or institute It states shield and carries out ultrasonic bonding.
2. turbofan according to claim 1, which is characterized in that in the bottom of the welding fitting portion, have The band-like protrusion contacted with the blade part.
3. turbofan according to claim 1 or 2, which is characterized in that it is described welding fitting portion the bottom and Has space between the blade part after welding.
CN201810226980.5A 2017-04-07 2018-03-19 Turbine fan Active CN108691804B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017-076504 2017-04-07
JP2017076504A JP6899245B2 (en) 2017-04-07 2017-04-07 Turbofan

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