TECHNICAL FIELD
[0001] The present device relates to a motor vehicle spare part product, in particular to
a throttle for use in a motor vehicle motive power assembly.
Background Art
[0002] A throttle device is generally provided in an internal combustion engine, arranged
upstream of the air intake manifold and in communication with the air intake pipeline.
It is used to control the flow rate of air supplied to the air intake manifold, and
thereby control the flow rate of air entering the engine cylinders.
[0003] A throttle in common use on the market at present comprises a throttle housing, an
electric machine located inside the throttle housing, a torque transfer apparatus
meshed with an output end of the electric machine, a throttle shaft connected in a
fixed manner to the torque transfer apparatus, a butterfly valve mounted on the throttle
shaft and located inside a throttle throat, and a cover mated with the throttle housing.
The throttle housing has a chamber for accommodating the electric machine, the chamber
being located on one side of the throttle throat.
[0004] The following drawbacks are associated with having the electric machine installed
in the throttle housing: 1) Since the housing material is metal, generally an aluminum
alloy, a considerable amount of aluminum alloy must be consumed to form the chamber
which accommodates the electric machine, so material costs are high. 2) To install
the electric machine in the housing, it is necessary to machine the housing to form
the chamber and screw holes for fixing the electric machine, so processing costs are
high. 3) The chamber is located at one side of the throttle throat, making the transverse
dimension of the throttle large, so that specific space demands cannot be met.
[0005] US 2014/261307 A1 relates to an engine intake control apparatus. A cover is made of synthetic resin,
a motor support plate is made of metal.
SUMMARY OF THE INVENTION
[0006] The object of the present device is to provide a throttle capable of reducing manufacturing
costs effectively.
[0007] The invention relates to a throttle with the features of claim 1.
[0008] The throttle provided by the present device comprises: a housing, having a throttle
throat; a cover mated with the housing, the material of the cover being plastic; an
electric machine; a torque transfer apparatus meshed with an output end of the electric
machine; a throttle shaft connected in a fixed manner to the torque transfer apparatus,
the throttle shaft passing through the throttle throat, and being supported by being
inserted into a first mounting hole and a second mounting hole in the throttle housing;
a butterfly valve mounted on the throttle shaft and located inside the throttle throat;
the electric machine being located in the cover. Preferably, the cover has a body
and a chamber which is formed as an extension from the body and used for accommodating
the electric machine, the electric machine being mounted in the chamber by means of
screws.
[0009] An inside wall of the chamber is provided with a ridge which presses against the
electric machine.
[0010] Preferably, the electric machine has a top; a wave washer and a flat washer are provided
between the top and a top wall of the chamber; the wave washer presses against the
top end of the electric machine, and the flat washer is located between the wave washer
and the top wall of the chamber.
[0011] Preferably, an outside wall of the chamber is provided with a rib extending to the
body.
[0012] Preferably, the electric machine is fixed in the chamber by means of glue.
[0013] Preferably, the electric machine is fixed in the cover by injection molding.
[0014] Preferably, thermally conductive adhesive is provided between the housing and the
cover.
[0015] Preferably, the torque transfer apparatus is two-stage transmission, comprising a
first gear and a second gear meshed with each other, the first gear being mounted
on an axle and meshed with the output end of the electric machine, and the second
gear being connected in a fixed manner to the throttle shaft.
[0016] Preferably, the torque transfer apparatus is one-stage transmission; the torque transfer
apparatus is a single gear connected in a fixed manner to the throttle shaft, with
the gear being meshed with the output end of the electric machine.
[0017] Compared with the prior art, since the electric machine is located in the plastic
cover, there is no need for a chamber for accommodating the electric machine to be
provided in the housing made of metal material, so material costs are reduced, and
there is no need for the chamber and screw holes for fixing the electric machine to
be formed in the cover by machining, so processing costs are reduced.
Description of the accompanying drawings
[0018] The accompanying drawings, which form part of the present application, are used to
furnish further understanding of the present device. The schematic embodiments of
the present device and the explanations thereof are intended to explain the present
device, without constituting an inappropriate limitation thereof.
[0019] Drawings:
Fig. 1 is a schematic perspective view of the throttle of the present device after
assembly;
Fig. 2 is a schematic sectional view of the throttle of the present device after assembly;
Fig. 3 is an enlarged schematic view of part A of the throttle shown in Fig. 2;
Fig. 4 is a schematic perspective view of the cover of the throttle shown in Fig.
1;
Fig. 5 is a schematic perspective view of another embodiment of the throttle of the
present device, wherein the cover has been removed.
PARTICULAR EMBODIMENTS
[0020] Referring to Figs. 1 and 2, the throttle comprises: a housing 1, the material thereof
being metal, and the housing 1 having a throttle throat; a cover 8 mated with the
housing 1, the material of the cover 8 being plastic, and an electric machine 2 located
in the cover 8; a torque transfer apparatus 3 meshed with an output end 20 of the
electric machine 2; a throttle shaft 4 connected in a fixed manner to the torque transfer
apparatus 3, the throttle shaft 4 passing through the throttle throat, and being supported
by being inserted into a first mounting hole (not shown in the figures) and a second
mounting hole (not shown in the figures) in the housing 1; and a butterfly valve 5
mounted on the throttle shaft 4 and located inside the throttle throat.
[0021] Since the electric machine 2 is located in the cover 8, there is no need for a chamber
for accommodating the electric machine 2 to be provided in the housing 1 made of metal
material, so material costs are reduced. Furthermore, the cover 8 may be injection
molded first, wherein the cover 8 has a body 81, a chamber 82 which is formed as an
extension from the body 81 and used for accommodating the electric machine 2, and
screw holes (not shown in the figures) for fixing the electric machine, and then the
electric machine 2 may be fixed in the chamber 82 by means of screws. Thus, there
is no need for the chamber 82 and screw holes for fixing the electric machine 2 to
be formed in the cover 8 by machining; injection molding may be used, so processing
costs are reduced. Referring to Fig. 4, and according to the invention, ridges 821
are provided on an inside wall of the chamber 82; the ridges 821 press against the
electric machine 2, thereby avoiding transverse vibration of the electric machine
2 during operation, and at the same time helping to dissipate heat. Referring to Fig.
3, the electric machine 2 has a top 21; a wave washer 6 and a flat washer 7 are provided
between the top 21 and a top wall 822 of the chamber 82. The wave washer 6 presses
against the top 21 of the electric machine 2, thereby reducing axial vibration of
the electric machine 2; the flat washer 7 is located between the wave washer 6 and
the top wall 822 of the chamber 82, to prevent stress caused by the wave washer 6
from damaging the cover 8. An outside wall of the chamber 82 is provided with ribs
823 which extend to the body 81; the ribs can increase the rigidity of the cover 8,
reduce transverse deformation, and thereby reduce transverse vibration of the electric
machine 2. To dissipate heat better, a thermally conductive adhesive may be provided
between the housing 1 and the cover 8.
[0022] Referring to Fig. 2, the torque transfer apparatus 3 is two-stage transmission, comprising
a first gear 31 and a second gear 32 meshed with each other, the first gear 31 being
mounted on an axle and meshed with the output end 20 of the electric machine 2, and
the second gear 32 being connected in a fixed manner to the throttle shaft 4. The
throttle also comprises a return spring 12 with two ends fixed to the housing 1 and
the second gear 32 respectively. The return spring 12 is mounted on the housing 1
and second gear 32 with a certain preload. Due to the action of the preload, one end
of the return spring 12 will pull the second gear 12 and fix it to the housing 1;
this position is an initial position of the second gear 32. When a break in current
is encountered, under the action of the preload the return spring 12 can pull the
second gear 32 to rotate, thereby impelling the throttle shaft 4 to rotate and pull
the butterfly valve 5 back to an initial position.
[0023] Referring to Figs. 1 and 4, the cover 8 has an electrical connection port 84 and
a position sensor 86 located therein. The position sensor 86 senses a rotation angle
of the butterfly valve 5 through a change in a magnetic field of a magnet (not shown
in the figures), and provides feedback to an electronic control unit.
[0024] Referring to Fig. 5, optionally, the torque transfer apparatus 3 is one-stage transmission;
the torque transfer apparatus 3 is a single gear 30 connected in a fixed manner to
the throttle shaft 4, with the gear 30 being meshed with the output end 20 of the
electric machine 2, and at the same time being connected in a fixed manner to the
throttle shaft 4. In this embodiment, the gear 30 is meshed internally with the output
end 20 of the electric machine 2, but could also be meshed externally. Thus the number
of components is small, the assembly process is more simple, and the space occupied
is smaller.
[0025] Optionally, after the cover 8 has been injection molded, the electric machine 2 is
fixed in the chamber by means of glue. The electric machine 2 could also be fixed
in the cover 8 directly by injection molding. These two methods of fixing the electric
machine solve the problems of vibration and heat dissipation very well.
1. A throttle, comprising:
a housing (1), having a throttle throat;
a cover (8) mated with the housing, the material of the cover being plastic;
an electric machine (2);
a torque transfer apparatus (3) meshed with an output end (20) of the electric machine;
a throttle shaft (4) connected in a fixed manner to the torque transfer apparatus,
the throttle shaft passing through the throttle throat, and being supported by being
inserted into a first mounting hole and a second mounting hole in the throttle housing;
a butterfly valve (5) mounted on the throttle shaft and located inside the throttle
throat;
characterised in that
the electric machine is located in a chamber (82) of the cover and an inside wall
of the chamber is provided with ridges (821) which press against the electric machine
in a transverse direction to damp transverse vibration of the electric machine during
operation.
2. The throttle as claimed in claim 1, wherein the cover has a body (81) and the chamber
is formed as an extension from the body, the electric machine being mounted in the
chamber by means of screws.
3. The throttle as claimed in claim 2, wherein the electric machine has a top (21) ;
a wave washer (6) and a flat washer (7) are provided between the top and a top wall
(822) of the chamber; the wave washer presses against the top end of the electric
machine, and the flat washer is located between the wave washer and the top wall of
the chamber.
4. The throttle as claimed in claim 2, wherein an outside wall of the chamber is provided
with a rib (823) extending to the body.
5. The throttle as claimed in claim 2, wherein the electric machine is fixed in the chamber
by means of glue.
6. The throttle as claimed in claim 1, wherein the electric machine is fixed in the cover
by injection molding.
7. The throttle as claimed in claim 1, wherein thermally conductive adhesive is provided
between the housing and the cover.
8. The throttle as claimed in any one of claims 1 - 7, wherein the torque transfer apparatus
is two-stage transmission, comprising a first gear (31) and a second gear (32) meshed
with each other, the first gear being mounted on an axle and meshed with the output
end of the electric machine, and the second gear being connected in a fixed manner
to the throttle shaft.
9. The throttle as claimed in any one of claims 1 - 7, wherein the torque transfer apparatus
is one-stage transmission; the torque transfer apparatus is a single gear (30) connected
in a fixed manner to the throttle shaft, with the gear being meshed with the output
end of the electric machine.
1. Drossel, umfassend:
ein Gehäuse (1), das einen Drosseldurchlass aufweist;
eine Abdeckung (8), die mit dem Gehäuse gekoppelt ist, wobei das Material der Abdeckung
Kunststoff ist;
eine elektrische Maschine (2);
eine Drehmomentübertragungseinrichtung (3), die mit einem Ausgangsende (20) der elektrischen
Maschine in Eingriff steht;
eine Drosselwelle (4), die in einer festen Weise mit der Drehmomentübertragungseinrichtung
verbunden ist, wobei die Drosselwelle durch den Drosseldurchlass verläuft und gelagert
ist, indem sie in eine erste Montageöffnung und eine zweite Montageöffnung in dem
Drosselgehäuse eingesetzt ist;
eine Drosselklappe (5), die an der Drosselwelle montiert ist und sich in dem Drosseldurchlass
befindet;
dadurch gekennzeichnet, dass
sich die elektrische Maschine in einer Kammer (82) der Abdeckung befindet und eine
Innenwand der Kammer mit Wülsten (821) versehen ist, die in einer Querrichtung gegen
die elektrische Maschine drücken, um eine Querschwingung der elektrischen Maschine
während eines Betriebs zu dämpfen.
2. Drossel nach Anspruch 1, wobei die Abdeckung einen Körper (81) aufweist und die Kammer
als eine Verlängerung von dem Körper ausgebildet ist, wobei die elektrische Maschine
in der Kammer mittels Schrauben montiert ist.
3. Drossel nach Anspruch 2, wobei die elektrische Maschine eine Oberseite (21) aufweist;
wobei eine Wellenscheibe (6) und eine Beilagscheibe (7) zwischen der Oberseite und
einer oberen Wand (822) der Kammer bereitgestellt sind; wobei die Wellenscheibe gegen
das obere Ende der elektrischen Maschine drückt und sich die Beilagscheibe zwischen
der Wellenscheibe und der oberen Wand der Kammer befindet.
4. Drossel nach Anspruch 2, wobei eine Außenwand der Kammer mit einer Rippe (823) versehen
ist, die sich zu dem Körper erstreckt.
5. Drossel nach Anspruch 2, wobei die elektrische Maschine in der Kammer mittels Klebstoff
befestigt ist.
6. Drossel nach Anspruch 1, wobei die elektrische Maschine in der Abdeckung durch Spritzgießen
befestigt ist.
7. Drossel nach Anspruch 1, wobei ein wärmeleitender Klebstoff zwischen dem Gehäuse und
der Abdeckung bereitgestellt ist.
8. Drossel nach einem der Ansprüche 1-7, wobei die Drehmomentübertragungseinrichtung
ein zweistufiges Getriebe ist, das ein erstes Zahnrad (31) und ein zweites Zahnrad
(32) umfasst, die miteinander in Eingriff stehen, wobei das erste Zahnrad auf einer
Achse montiert ist und mit dem Ausgangsende der elektrischen Maschine in Eingriff
steht und das zweite Zahnrad in einer festen Weise mit der Drosselwelle verbunden
ist.
9. Drossel nach einem der Ansprüche 1-7, wobei die Drehmomentübertragungseinrichtung
ein einstufiges Getriebe ist; wobei die Drehmomentübertragungseinrichtung ein einzelnes
Zahnrad (30) ist, das in einer festen Weise mit der Drosselwelle verbunden ist, wobei
das Zahnrad mit dem Ausgangsende der elektrischen Maschine in Eingriff steht.
1. Papillon des gaz, comprenant :
un logement (1) ayant un rétrécissement de papillon des gaz ;
un couvercle (8) accouplé au logement, le matériau du couvercle étant un plastique
;
une machine électrique (2) ;
un appareil de transfert de couple (3) engrené avec une extrémité de sortie (20) de
la machine électrique ;
un axe de papillon (4) relié de manière fixe à l'appareil de transfert de couple,
l'axe de papillon passant à travers le rétrécissement de pavillon des gaz et étant
supporté par son insertion dans un premier trou de montage et un second trou de montage
dans le logement du papillon des gaz ;
un volet obturateur (5) monté sur l'axe de papillon et situé à l'intérieur du rétrécissement
de papillon des gaz ;
caractérisé en ce que
la machine électrique est située dans une chambre (82) du couvercle et une paroi interne
de la chambre est munie de stries (821) qui se pressent contre la machine électrique
dans une direction transversale pour amortir des vibrations transversales de la machine
électrique pendant son fonctionnement.
2. Papillon des gaz selon la revendication 1, dans lequel le couvercle a un corps (81)
et la chambre est formée en tant qu'extension à partir du corps, la machine électrique
étant montée dans la chambre au moyen de vis.
3. Papillon des gaz selon la revendication 2, dans lequel la machine électrique a un
sommet (21) ; une rondelle ondulée (6) et une rondelle plate (7) sont placées entre
le sommet et une paroi supérieure (822) de la chambre ; la rondelle ondulée se presse
contre l'extrémité supérieure de la machine électrique, et la rondelle plate est située
entre la rondelle ondulée et la paroi supérieure de la chambre.
4. Papillon des gaz selon la revendication 2, dans lequel une paroi extérieure de la
chambre est munie d'une nervure (823) s'étendant vers le corps.
5. Papillon des gaz selon la revendication 2, dans lequel la machine électrique est fixée
dans la chambre au moyen de colle.
6. Papillon des gaz selon la revendication 1, dans lequel la machine électrique est fixée
dans le couvercle par moulage par injection.
7. Papillon des gaz selon la revendication 1, dans lequel un adhésif thermo-conducteur
est placé entre le logement et le couvercle.
8. Papillon des gaz selon l'une quelconque des revendications 1 à 7, dans lequel l'appareil
de transfert de couple est une transmission à deux étages, comprenant un premier engrenage
(31) et un second engrenage (32) engrenés l'un avec l'autre, le premier engrenage
étant monté sur un essieu et engrené avec l'extrémité de sortie de la machine électrique,
et le second engrenage étant relié de manière fixe à l'axe de papillon.
9. Papillon des gaz selon l'une quelconque des revendications 1 à 7, dans lequel l'appareil
de transfert de couple est une transmission à un étage ; l'appareil de transfert de
couple est constitué d'un seul engrenage (30) relié de manière fixe à l'axe de papillon,
l'engrenage étant engrené avec l'extrémité de sortie de la machine électrique.