SI22698A

SI22698A - Reinforced support of the pump motor

Info

Publication number: SI22698A
Application number: SI200700305A
Authority: SI
Inventors: JoĹľe BENEDIÄŚIÄŚ
Original assignee: Domel D.D.
Priority date: 2007-11-26
Filing date: 2007-11-26
Publication date: 2009-06-30
Also published as: WO2009070128A1

Abstract

Subject of the invention is a reinforced support of the water pump electric motor made from BMC for dishwashers. According to the invention inside the adapter (6) and the bracket (9) there is a centrally inserted reinforcement (8), while the reinforcement (8) is made of metal, preferably steel The procedure of manufacturing the reinforced support is characterised in that the reinforcement (8) is impressed into the BMC mass of the adapter (6) and its bracket (9) immediately after filling the mould with BMC through the mould opening (12) by using piston (13).

Description

OJAČANI NOSILEC MOTORJA ČRPALKEREINFORCED PUMP MOTOR CARRIER

Predmet izuma je ojačani nosilec elektromotorja vodne črpalke stroja za pomivanje posode. Vodno črpalko stroja za pomivanje posode, predvsem stroja za gospodinsko uporabo poganja elektromotor, na ohišje katerega je neposredno črpalka pritrjena. Motor s črpalko je pritrjen na ohišje stroja za pomivanje posode. Nanj je običajno elastično obešen s temu namenjenimi valjastimi nastavki na gornji strani prednjega dela ohišja motorja.The subject of the invention is a reinforced electric motor support for a water pump of a dishwasher. The water pump of the dishwasher, especially the household appliance, is driven by an electric motor to the housing of which the pump is directly attached. The pump motor is attached to the housing of the dishwasher. It is usually suspended elastically by the intended cylindrical attachments on the upper side of the front of the engine housing.

Sestava elektromotorja s črpalko je prikazan na sliki 1. Prednji del 1 ohišja elektromotorja je hkrati nosilec ležaja, nanj je pritrjena črpalka 2 in del njega sta dva valjasta nosilna nastavka 6. Med prednjim delom 1 in zadnjim delom 5 je vpet stator 3 elektromotorja, v statorju 3 ter v ležajih v prednjem delu 1 in zadnjem delu 5 je rotacijsko nameščen rotor 4. Valjasta nosilna nastavka 6 sta vtisnjena v elastična nosilca 7, ki vežeta sestavo na ohišje stroja. Znana ohišja elektromotorja za pogon črpalke stroja za pomivanje posode in z valjastimi nastavki 6 za pritrditev v ohišje stroja so izdelana iz tlačno litega aluminija.The assembly of the electric motor with the pump is shown in Fig. 1. The front part 1 of the motor housing is at the same time a bearing, the pump 2 is attached to it, and two cylindrical mounting brackets are attached to it 6. Between the front part 1 and the rear part 5 is a stator 3 of the electric motor, The stator 3 and the bearings in the front part 1 and the rear part 5 are rotatably mounted rotor 4. The cylindrical support brackets 6 are pressed into the elastic brackets 7, which bind the assembly to the machine body. Known electric motor housings for driving the dishwasher pump and cylindrical attachments 6 for attachment to the machine housing are made of die-cast aluminum.

V novejšem času so na voljo umetne mase, ki dokaj uspešno nadomeščajo aluminij. Prednost umetnih mas pred aluminijem je predvsem njihova nižja cena, nižji stroški procesa proizvodnje ter njihova antikorozijska odpornost. Kot nadomestilo aluminija ohišja elektromotorja stroja za pomivanje posode je najbolj uporabna BMC (Bulk Molding Compound) masa. BMC masa ustreza po vseh lastnostih, razen po trdnosti valjastih nastavkov 6. Poskusi so pokazali, da trdnost valjastih nastavkov, izdelanih le iz BMC ne zadošča.More recently, plastics have been available to replace aluminum quite successfully. The advantages of plastics over aluminum are primarily their lower cost, lower production process costs and their corrosion resistance. The BMC (Bulk Molding Compound) mass is the most useful substitute for the aluminum housing of the electric motor of the dishwasher. BMC mass corresponds to all properties except for the strength of cylindrical attachments 6. Experiments have shown that the strength of cylindrical attachments made from BMC alone is not sufficient.

Naloga in cilj izuma je takšna konstrukcija in postopek izdelave valjastih nosilnih nastavkov kot integralnega dela ohišja elektromotorja stroja za pomivanje posode ki bo zadoščal zahtevam po njihovi trdnosti.It is an object and object of the invention to design and process the manufacture of cylindrical load-bearing mountings as an integral part of the housing of an electric motor of a dishwasher that will satisfy the requirements of their strength.

-2Po izumu je naloga rešena po neodvisnih patentnih zahtevkih.-2 According to the invention, the problem is solved according to independent claims.

Izum bo opisan na izvedbenih primerih in s pomočjo slik, ki prikazujejo:The invention will be described by way of example examples and by means of pictures showing:

Slika 1: sestav elektromotorja in vodne črpalke stroja za pomivanje posode,Figure 1: assembly of electric motor and water pump of dishwasher,

Slika 2: detajl prednjega dela ohišja elektromotorja z dvema valjastima nosilnima nastavkoma v projekciji in delno v prerezu,Figure 2: Detail of the front of the housing of the electric motor with two cylindrical mountings in projection and partly in cross section,

Slika 3: prvi izvedbeni primer ojačitve valjastega nastavka v prerezu,Figure 3: first embodiment of reinforcement of a cylindrical cross-sectional attachment,

Slika 4: drugi izvedbeni primer ojačitve valjastega nastavka v prerezu,Figure 4: another embodiment of reinforcing a cylindrical cross-sectional attachment,

Slika 5: postopek vtisnjenja ojačitve v valjast nastavek v prerezu.Figure 5: Procedure for inserting a reinforcement into a cylindrical section in cross section.

Na sliki 2 je v prerezu vidna ojačitev 8, centrično vstavljena v nastavek 6 in podaljšano v nosilec 9 nastavka 6. Nastavek 6 je iz kovine, prednostno jekla. Ta detajl je v prerezu prikazan v prvem izvedbenem primeru na sliki 3 in v drugem na sliki 4. V obeh izvedbenih primerih je ojačitev 8 centrično vstavljena v nastavek 6, pri čemer je ojačitev prednostno valjaste oblike in premera od 1/3 do 2/3 premera nastavka 6. Ojačitev 8 v prvem izvedbenem primeru po sliki 3 po dolžini sega od 1/3 do 4/5 premera nastavka 6 od čela nastavka 6 pa do ravnine 11 nosilca 9. V drugem izvedbenem primeru po sliki 4 pa po dolžini sega od 1/3 do 4/5 premera nastavka 6 od čela nastavka 6 pa do konusne vdolbine 10 nosilca 9. Ta konusna vdolbina povzroči, da je čelo ojačitve 6 pretežno prekrito z BMC in tako zavarovano pred korozijo.In Figure 2, a cross-section shows a reinforcement 8 centrally inserted into the socket 6 and extended into the carrier 9 of the socket 6. The socket 6 is made of metal, preferably steel. This detail is shown in cross-section in the first embodiment in Figure 3 and in the second in Figure 4. In both embodiments, the reinforcement 8 is centrally inserted into the nozzle 6, the reinforcement being preferably cylindrical in shape and 1/3 to 2/3 in diameter. the diameter of the attachment 6. The reinforcement 8 in the first embodiment of Figure 3 extends from 1/3 to 4/5 in length of the diameter of the attachment 6 from the face of the attachment 6 to the plane 11 of the bracket 9. In the second embodiment, the length extends from 1/3 to 4/5 of the diameter of the attachment 6 from the face of the attachment 6 to the conical recess 10 of the support 9. This conical recess causes the reinforcement 6 to be largely covered with BMC and thus protected from corrosion.

Ojačitev 8 se vstavi v nastavek 6 kot je prikazano na sliki 5. Za izdelavo prednjega dela 1 ohišja elektromotorja se tlačno vlije BMC po znanih postopkih v jeklen kalup. Takoj po vbrizgu BMC v kalup in preden se lahko BMC strdi, se po izumu v BMC maso nastavka 6 in njegovega nosilca 9 vtisne ojačitev 8. Kalup ima v svojem delu 12, ki oblikuje ustje nosilca 9 glede na nastavek 6 centrično izvrtino, v katero je pred vlivanjem BMC nameščena ojačitev 8 tako, da se čelo ojačitve 8 pokriva s čelom dela 12 kalupa. Takoj po tem, ko je BMC vbrizgana, bat 13 v izvrtini dela 12 kalupa potisne ojačitev 8 v nastavek 6 in pri tem iz nastavka 6 iztisne del BMC. Potisk bata 13 je tolikšen, da je ojačitev 6 pozicionirana kot je opisano in prikazano na slikah 3 in 4. Po tem se kalup po znanih postopkih odpre. Na sliki 5 je čelo bata 13 prikazano konično inReinforcement 8 is inserted into the nozzle 6 as shown in Figure 5. To produce the front part 1 of the motor housing, the BMC is pressurized by known methods into a steel mold. Immediately after injection of the BMC into the mold, and before the BMC can harden, according to the invention, a reinforcement 8 is imprinted into the BMC by the mass of the attachment 6 and its support 9. The mold has, in its part 12, which forms the mouth of the support 9 relative to the attachment 6, in which the reinforcement 8 is positioned prior to the casting of the BMC so that the face of the reinforcement 8 is covered with the face of the mold portion 12. Immediately after the BMC is injected, the piston 13 in the bore of the mold portion 12 pushes the reinforcement 8 into the nozzle 6, extruding the BMC portion from the nozzle 6. The thrust of the piston 13 is such that the reinforcement 6 is positioned as described and shown in Figures 3 and 4. The mold is then opened by known procedures. In Fig. 5, the forehead of piston 13 is shown conically and

-3s konico potisne ojačitev 8 v nastavek 6. Pri tem ob vtisnjenju ojačitve 8 v nastavek 6 BMC zalije pretežen del čela ojačitve 8.The -3 with the tip pushes the gain 8 into the nozzle 6. In doing so, when the reinforcement 8 is pressed into the nozzle 6, the BMC pours the bulk of the reinforcement face 8.

Ojačitev 8 je v preseku prednostno oblike kroga; seveda pa je v okviru izuma tudi kakršnakoli drugačna oblika preseka, npr. kvadratna, šeterokotna, osmerokotna ali kakršenkoli druga.Reinforcement 8 is in cross-section, preferably in the shape of a circle; of course, the invention also includes any other cross-sectional design, e.g. square, hexagonal, octagonal or any other.

Claims

PATENT APPLICATIONS

1. A reinforced electric motor carrier of a water pump of a dishwasher, wherein the electric motor housing is made of BMC, characterized in that a reinforcement (8) is centrally inserted in the extension (6) and the support (9), wherein the reinforcement (8 ) metallic, preferably steel.

A reinforced support according to claim 1, characterized in that the reinforcement (8) is preferably cylindrical in shape and with a diameter of 1/3 to 2/3 of the diameter of the attachment (6).

Reinforced support according to claim 1, characterized in that the reinforcement (8) extends from 1/3 to 4/5 of the diameter of the attachment (6) in length from the face of the attachment (6) to the plane (11) of the support (9).

Reinforced support according to claim 1, characterized in that the reinforcement (8) extends from 1/3 to 4/5 of the diameter of the attachment (6) in length from the head of the attachment (6) to the conical recess (10) of the support (9) .

5. A method of manufacturing a reinforced electric motor carrier of a water pump of a dishwasher, wherein the electric motor housing is made of BMC, characterized in that the reinforcement (8) is pressed into the BMC by the mass of the attachment (6) and its carrier (9) imprinted immediately after injection of BMC into the mold.

Method according to claim 5, characterized in that the reinforcement (8) is pressed through the bore of the mold (12) with a piston (13).

Method according to claim 5, characterized in that the reinforcement (8) is pushed into the nozzle (6) centrally.