PatentDe  


Dokumentenidentifikation EP1453188 26.04.2007
EP-Veröffentlichungsnummer 0001453188
Titel Statoranordnung für einen Elektromotor und Verfahren zu deren Herstellung
Anmelder LG Electronics Inc., Seoul, KR
Erfinder Park, Jin-Soo, Namdong-gu Incheon, KR;
Kim, Byung-Taek, Ansan, Gyeonggi-Do, KR
Vertreter Gille Hrabal Struck Neidlein Prop Roos, 40593 Düsseldorf
DE-Aktenzeichen 60312471
Vertragsstaaten DE, FR, GB, IT
Sprache des Dokument EN
EP-Anmeldetag 15.07.2003
EP-Aktenzeichen 030160089
EP-Offenlegungsdatum 01.09.2004
EP date of grant 14.03.2007
Veröffentlichungstag im Patentblatt 26.04.2007
IPC-Hauptklasse H02K 15/02(2006.01)A, F, I, 20051017, B, H, EP
IPC-Nebenklasse H02K 1/14(2006.01)A, L, I, 20051017, B, H, EP   H02K 1/02(2006.01)A, L, I, 20051017, B, H, EP   

Beschreibung[en]
BACKGROUND OF THE INVENTION 1. Field of the Invention

The present invention relates to a stator of a motor, and more particularly, to a motor stator assembly and a fabrication method thereof for fabricating a yoke by laminating a plurality of steel sheets and fabricating a pole by a powder metallurgy method.

2. Description of the Related Art

Generally, most of electric appliances use a motor as a driving source. The motor comprises a stator assembly for winding and fixing coil , and a mover assembly positioned inside or outside of the stator assembly and rotated by induction magnetic field for transmitting a driving force.

Figure 1 is a perspective view showing a stator assembly manufactured by a lamination method in accordance with the conventional art.

As shown, the stator assembly comprises: a stator core 1 formed by laminating a plurality of sheets C which are fabricated by blanking steel with a predetermined shape; an insulator 2 installed in the stator core 1; and a coil 3 wound outside of the insulator 2 for forming induction current.

As shown in Figure 2, the sheets C constituting the stator core 1 includes a yoke 1 a formed as a quadrangle shape for forming a magnetic path; and a pole 1 b formed integrally with the yoke 1 a as a circular arc shape at both sides of an inner circumference surface of the yoke 1 a, on which the coil 3 is wound.

The insulator 2 is attached to a part where the yoke 1 a and the pole 1 b are connected to each other, and is formed with insulating material such as plastic or rubber for insulating between the coil 3 and the stator core 1.

However, in the stator assembly of a lamination method, an amount of scrap loss which is discarded at the time of blanking for fabricating the stator core is more than 35% ,and accordingly, loss of material is generated.

Also, since a protector manufactured by injection molding, is inserted between the stator core and the coil, a radius of a part where coil is wound increases, which result in cost rise, a winding resistance is increased, and thus a motor efficiency is decreased.

To solve the above problems, as shown in Figures 3 and 4, the stator assembly of powder metallurgy method comprises: a frame 5 formed by inputting magnetic powder material into a mold of a predetermined shape, applying a predetermined pressure, and heating with a predetermined temperature; and a coil 6 wound on a winding groove 5c of the frame 5 for generating induction magnetism.

The frame 5 includes a yoke 5a formed as a closed curve of a quadrangle shape for forming a magnetic path; and a pole 5b formed integrally with the yoke 5a as a circular arc shape at both sides of an inner circumference surface of the yoke 5a.

A neck portion of the winding groove 5c is provided in order to reduce an amount of the coil 6, and an edge of the winding groove 5c is formed as a curved line in order to prevent coating of the coil 6 from falling off when the coil 6 is wound.

Also, an insulator 7 for insulating the coil 6 from the pole 5b is attached to an outer side of the pole 5b and the winding groove 5c and an inner side of the yoke 5a which are contacted with the coil 6.

However, the powder metallurgy method has a disadvantage that a magnetic permeability of magnetic powder and core loss characteristic are lower than silicon steel used in the lamination method and material cost is expensive.

Herein, the magnetic permeability is called as magnetic inductive capacity, which means a ratio between magnetic flux density generated at the time of magnetization by magnetic field and intensity of the magnetic field in a vacuum state.

Also, the core loss characteristic means loss generated by steel in a unit volume, and silicon steel has more excellent core loss characteristic than iron powder. That is, since the silicon steel has more excellent magnetic flux density than the iron powder, the motor efficiency is relatively better.

In the powder metallurgy method, the frame is formed by using the mold thus to have an easy fabricating process, the winding groove is formed at the neck portion of the pole thus to reduce consumption amount of the coil, and the curved line is formed at the winding groove thus to prevent the coil from falling off at the time of being wound. However, cost of the magnetic powder is considerably expensive than the silicon steel.

Also, since the magnetic powder has low permeability and the core loss characteristic than the silicon steel, a frame of a larger volume is required in order to obtain the same effect with a motor using the conventional silicon steel, thereby increasing material cost.

SU-1257751-A discloses a motor stator assembly comprising the features of the preamble of claim 1. Also JP- 9215230 discloses a motor stator assembly comprising a plurality of poles.

It is therefore the object of the invention to provide an improved motor stator assembly.

The above mentioned objectives can be achieved by a motor stator assembly according to the features of claim 1. Advantageous embodiments of the invention are subject matter of the dependent claims.

Therefore, an object of the present invention is to provide a motor stator assembly.

To achieve these and other advantages and in accordance with the purpose of the present invention, as embodied and broadly described herein, there is provided a motor stator assembly comprising the features of independent claim 1.

An example useful for the understanding of the invention, there is provided a manufacturing method of a motor stator assembly comprising the steps of: a first step of forming a plurality of yoke plates by blanking steel plate of a predetermined shape; a second step of forming a yoke by laminating the yoke plates with a predetermined height; a third step of forming a predetermined frame by installing the laminated yoke into a mold; a fourth step of filling magnetic powder material in an empty space of the mold; a fifth step of forming a pole engaged to the yoke by applying a predetermined pressure and heat to the filled magnetic powder material; and a sixth step of removing the mold and then winding coil to the pole.

In the first step, the yoke plates are formed by blanking the steel plate having a predetermined length and a width at a time.

In the fifth step, the pole is formed in accordance with that the magnetic powder material is pressed and then cured with 300~500°C thus to be combined one another.

In the sixth step, when the coil is wound on the pole, an insulator is attached to a contacted part between the pole and the coil, or insulating material is molded and attached thus to wind the coil.

The foregoing and other objects, features, aspects and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention.

In the drawings:

  • Figure 1 is a perspective view showing a motor stator assembly of a lamination method in accordance with the conventional art;
  • Figure 2 is a plan view showing the stator assembly of a lamination method in accordance with the conventional art;
  • Figure 3 is a perspective view showing a motor stator assembly of a powder metallurgy method in accordance with the conventional art;
  • Figure 4 is a sectional view showing the motor stator assembly of a powder metallurgy method in accordance with the conventional art;
  • Figure 5 is a disassembled perspective view of a motor assembly stator according to the present invention;
  • Figure 6 is a sectional view of the motor assembly stator according to the present invention;
  • Figures 7 to 11 are enlarged views of "A" part of Figure 6 showing an engagement structure between a connecting part and a yoke of the stator assembly according to the present invention;
  • Figure 12 is a sectional view taken along line I-I of Figure 6;
  • Figure 13 is an upper surface view of a steel plate showing a manufacturing method of a yoke useful for the understanding of the invention; and
  • Figures 14A to 14D are views showing manufacturing processes of the motor stator assembly according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings.

A motor stator assembly according to the present invention and a fabrication method thereof, which is useful for the understanding of the invention will be explained with reference to the most preferred embodiment.

Figure 5 is a disassembled perspective view of a motor assembly stator according to the present invention; Figure 6 is a sectional view of the motor assembly stator according to the present invention; Figures 7 to 11 are enlarged views of "A" part of Figure 6 showing an engagement structure between a connecting part and a yoke of the stator assembly according to the present invention; Figure 12 is a sectional view taken along line I-I of Figure 6; Figure 13 is an upper surface view of a steel plate showing a fabrication method of a yoke useful for the understanding of the invention; and Figures 14A to 14D are views showing fabricating processes of the motor stator assembly according to the present invention.

As shown in Figure 5, the motor stator assembly according to the present invention comprises: a plurality of yokes 10 manufactured by laminating a plurality of steel sheets having a predetermined length; and a plurality of poles 20 engaged between the yokes 10 and formed by molding magnetic material in a mold, on which coil is wound.

The pole 20 includes a guide part 23 having an inner surface of a circular arc shape and for collecting magnetic flux. The guide part 23 is provided to form a magnetic path with a predetermined distance with a rotor inserted at an inner side of the stator.

A winding part 22 is formed at a rear surface of the guide part 23 by being integrally connected, and coil is wound on the winding part 22.

A height and a length of the winding part 22 are smaller than those of the guide part 23, which prevents the coil 30 from being protruded out of the guide part 23 when the coil 30 is wound on the winding part 22 and so as to wound the coil 30 several times.

Also, a coil groove 22a having a thickness t is preferably formed at an outer circumference surface of the winding part 22 so that the coil can be wound thereon.

A curved line part 22b is preferably formed at an edge of the outer circumference surface of the winding part 22 in order to prevent coating of the coil from falling off at the time when the coil is wound.

A connecting part 21 connected to the yoke 10 is integrally formed at a rear surface of the winding part 22.

The connecting part 21 has a circular arc shape and the same height with the yoke 10.

The pole 20 is formed with magnetic powder material for polarity. At this time, a curing process is performed, that is, the powder material is putted into a mold, pressed, and heated with 300~500°C, thereby being engaged to one another.

Herein, the number of the poles 20 fabricated by forming the magnetic powder material can be plural, and according to this, the number of the yokes 10 can be plural.

As shown in Figures 5 and 6, an insulator 40 for insulating the pole 20 from the coil 30 is attached to at inner sides of the winding part 22 on which the coil 30 is wound and the pole 20, or nonconductive material is molded. And the nonconductive material includes epoxy.

The plurality of yoke plates 11 having a constant curvature radius therein are laminated as a height of the connecting part 21, and the yokes are engaged between two connecting parts 21.

The yoke plates 11 are formed of silicon steel having excellent permeability and core loss characteristic.

Herein, the magnetic permeability is called as magnetic inductive capacity, which means a ratio between magnetic flux density generated at the time of magnetization by magnetic field and intensity of the magnetic field in a vacuum state.

Also, the core loss characteristic means loss generated by steel in a unit volume, and silicon steel has more excellent core loss characteristic than iron powder. That is, since the silicon steel has more excellent magnetic flux density than the iron powder, a motor efficiency is relatively high.

A connecting projection 11a and a connecting groove 21a for engaging the yoke 10 to the connecting part are formed between the yoke 10 and the connecting part 21 with the same height as the yoke 10 and the connecting part 21.

As shown in Figure 7, the connecting projection 11a of the yoke 10 is protruded as a rectangular shape, and engaged to the connecting groove 21 a having a rectangular groove of the connecting part 21 in order to prevent the yoke 10 from being separated from the connecting part 21.

As shown in Figure 8, the connecting projection 11a of the yoke 10 is protruded as a trapezoid shape, and engaged to the connecting groove 21 a having a corresponding trapezoid groove of the connecting part 21.

As shown in Figure 9, the connecting projection 11a of the yoke 10 is protruded long with two same stopping jaws 11a-1 at both sides thereof, and engaged to the stopping groove 21a-1 having a groove of a corresponding shape to the connecting part 21 in order to prevent the yoke 10 from being separated from the connecting part 21.

As shown in Figure 10, a step projection 11b of a rectangular shape is formed at both ends of the yoke 10 and engaged to a step projection 21b formed at both ends of the connecting part 21 with a corresponding rectangular shape.

As shown in Figure 11, the yoke 10 has a constant inclined surface 11c at both ends thereof and a corresponding inclined surface 21c is also formed at both ends of the connecting part 21, so that the yoke 10 is engaged to the connecting part 21.

A fabrication method of the motor stator assembly, which is useful for understanding the invention will be explained.

As shown in Figure 14, thin silicon steel within 1mm is processed by blanking, thereby forming the plurality of yoke plates 11.

At this time, as shown in Figure 13, the yoke plates 11 are formed by processing the silicon steel having a predetermined length and a width by a punching tool having a plurality of punches at one time.

According to this, time can be considerably reduced than a case when the yoke plates 11 are formed one by one with one punch.

Then, the yoke plates 11 are laminated with a constant height thus to form the yoke 10, and the laminated yoke 10 is installed at each side of the mold thus to form a predetermined frame.

Herein, if the yoke 10 is filled in the mold, a molding space C is formed at another part. Magnetic powder material is filled in the molding space C.

The magnetic powder material is pressed with a predetermined pressure and heated with a predetermined temperature thus to form the pole 20 engaged to the yoke 10. The pole 20 is integrally engaged to the yoke 10 at the time of molding, instead of engaging the pole 20 and the yoke 10 each other after separately fabricating.

Also, in order to fabricate the pole 20, the magnetic powder material is pressed and the pressed magnetic powder material is cured with approximately 300∼500°C thus to combine the magnetic powder material.

Herein, the curing is different from sintering slightly. By the sintering, powder material is pressed and heated with temperature close to a melting point thus to be combined. At this time, since the powder material is combined by heat of high temperature, characteristic of the material can be changed.

On the contrary, by the curing, the powder material is pressed and heated in approximately 300∼500°C thus to be combined. At this time, since the powder material is heated by relatively small heat , characteristic of the material is not changed.

Finally, the mold is removed and then coil 30 is wound on the pole 20 formed of the magnetic powder material.

When the coil 30 is wound on the pole 20, the insulator 40 can be attached to a part where the pole 20 is contacted with the coil 30, or insulating material is molded and then the coil is wound.

The motor stator assembly according to the present invention has the following advantages.

First, whereas the pole is formed of the magnetic powder material, the yoke is formed of the silicon steel which is low and has more excellent permeability and the core loss characteristic than the magnetic powder material. Accordingly, a performance deterioration of the motor in the same volume can be effectively prevented and thus cost increase by an enlarged motor can be prevented.

Also, since the yoke plates are processed by blanking with a plurality of punches, time and scrap loss amount are reduced and thus manufacturing cost is reduced.

Besides, the groove is formed at the winding part of the pole on which the coil is wound and the edge of the groove is formed with a curved line shape. According to this, another coating protecting device such as a protector is not required. Also, winding radius of the coil can be reduced as a depth of the groove thus to reduce coil amount on the basis of a constant number of times of winding by approximately 35%. And, by reducing amount of the coil protruded outside the pole and an overall length of the entire coil, winding resistance is lowered and thus the motor efficiency is enhanced.

As the present invention may be embodied in several forms, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, unless otherwise specified, but rather should be construed as defined in the appended claims.


Anspruch[de]
Eine Motorstatoranordnung, umfassend: eine Vielzahl von Jochen (10), die durch Laminieren einer Vielzahl von Stahlblechen, die eine bestimmte Länge aufweisen, hergestellt wurden; und eine Vielzahl von Polen (20), die zwischen den Jochen in Eingriff stehen, und durch Formen von magnetischem Material in einer Form gebildet wurden, um die eine Spule gewickelt ist, wobei jeder der Pole umfasst: ein Führungsteil (23), das eine kreisförmige Bogenform aufweist, um magnetischen Fluss zu sammeln; ein Wicklungsteil (22), das mit einer hinteren Oberfläche des Führungsteils verbunden ist, auf dem eine Spule (30) gewickelt ist; und ein Verbindungsteil (21), das an einer hinteren Oberfläche des Wicklungsteils gebildet und mit den Jochen (10) verbunden ist,

dadurch gekennzeichnet, dass
eine Höhe und eine Länge des Wicklungsteils (22) kleiner sind als die des Führungsteils (23), und eine äußere Umfangsfläche des Wicklungsteils (22) konkav geformt ist, so dass die Spule (30) darauf gewickelt werden kann.
Die Anordnung nach Anspruch 1 , wobei ein Isolator (40) an der Innenseite des Wicklungsteils, auf dem die Spule gewickelt ist, und dem Pol zum Isolieren des Pols von der Spule angebracht ist. Die Anordnung nach Anspruch 1 , wobei nicht leitendes Material an einer Innenseite des Wicklungsteils, auf dem die Spule gewickelt ist, und dem Pol zum Isolieren des Pols von der Spule geformt ist. Die Anordnung nach Anspruch 1 , wobei das Führungsteil (23) eine innere Oberfläche von kreisförmiger Bogenform aufweist, zum Sammeln von magnetischem Fluss zu einem Rotor durch Führen des Rotors. Die Anordnung nach Anspruch 1 , wobei eine an einer äußeren Umfangsoberfläche des Wicklungsteils (22) gebildete Kante als eine Kurvenlinie gebildet ist, um zu verhindern, dass Beschichtung der Spule abfällt, wenn die Spule gewickelt wird. Die Anordnung nach Anspruch 1 , wobei das Verbindungsteil eine kreisförmige Bogenform aufweist, und aus einer Platte gebildet ist, die eine konstante Höhe und eine konstante Breite aufweist. Die Anordnung nach Anspruch 6, wobei das Joch zwischen zwei verschiedenen Verbindungsteilen (21) in Eingriff ist und demgemäss gebildet ist, dass eine Vielzahl von Jochplatten, die darin einen konstanten Krümmungsradius aufweisen, so hoch wie das Verbindungsteil laminiert sind. Die Anordnung nach Anspruch 7, wobei ein Verbindungsvorsprung und eine Verbindungsnut (21a), um das Joch und den Verbindungsteil in Eingriff zu bringen, mit derselben Höhe gebildet sind, wie das Joch und der Verbindungsteil. Die Anordnung nach Anspruch 7, wobei der Verbindungsvorsprung des Jochs als rechteckige Form hervorragt und mit der Verbindungsnut in Eingriff ist, die eine rechteckige Nut des Verbindungsteils aufweist, um zu verhindern, dass das Joch von dem Verbindungsteil getrennt wird. Die Anordnung nach Anspruch 7, wobei der Verbindungsvorsprung des Jochs als eine trapezoide Form hervorragt, und im Eingriff mit der Verbindungsnut ist, die eine entsprechende trapezoide Nut des Verbindungsteils aufweist. Die Anordnung nach Anspruch 7, wobei der Verbindungsvorsprung des Jochs mit zwei gleichen Stoppbacken an seinen beiden Seiten hervorragt, und mit einer Stoppnut, die eine Nut von entsprechender Form zum Verbindungsteil aufweist, in Eingriff ist, um zu verhindern, dass das Joch von dem Verbindungsteil getrennt wird. Die Anordnung nach Anspruch 1 , wobei ein Stufenvorsprung von rechteckiger Form an beiden Enden des Jochs gebildet und mit einem Stufenvorsprung, der an beiden Enden des Verbindungsteils mit einer entsprechenden rechteckigen Form gebildet ist, in Eingriff steht. Die Anordnung nach Anspruch 1 , wobei das Joch eine konstante geneigte Oberfläche an seinen beiden Enden aufweist, und eine entsprechend geneigte Oberfläche ist ebenfalls an beiden Enden der Verbindungsteils gebildet, so dass das Joch mit dem Verbindungsteil in Eingriff steht.
Anspruch[en]
A motor stator assembly comprising: a plurality of yokes (10) fabricated by laminating a plurality of steel sheets having a predetermined length; and a plurality of poles (20) engaged between the yokes and formed by molding magnetic material in a mold, on which coil is wound, in which each of the poles comprises: a guide part (23) having a circular arc shape, for collecting magnetic flux; a winding part (22) connected to a rear surface of the guide part, on which a coil (30) is wound; and a connecting part (21) formed at a rear surface of the winding part and connected to the yokes (10),

characterized in that
a height and a length of the winding part (22) are smaller than those of the guide part (23), and an outer circumference surface of the winding part (22) is formed concavely so that the coil (30) can be wound thereon.
The assembly of claim 1, wherein an insulator (40) is attached to inside of the winding part on which coil is wound and the pole for insulating the pole from the coil. The assembly of claim 1, wherein nonconductive material is molded at an inner side of the winding part on which coil is wound and the pole for insulating the pole from the coil. The assembly of claim 1, wherein the guide part (23) has an inner surface of a circular arc shape, for collecting magnetic flux to a rotor by guiding the rotor. The assembly of claim 1, wherein an edge formed at an outer circumference surface of the winding part (22) is formed as a curved line in order to prevent coating of the coil from falling off when the coil is wound. The assembly of claim 1, wherein the connecting part has a circular arc shape and is formed of a plate having a constant height and a constant width. The assembly of claim 6, wherein the yoke is engaged between two different connecting parts (21) and formed in accordance with that a plurality of yoke plates having a constant curvature radius therein are laminated as high as the connecting part. The assembly of claim 7, wherein a connecting projection and a connecting groove (21a) for engaging the yoke and the connecting part are formed with the same height as the yoke and the connecting part. The assembly of claim 7, wherein the connecting projection of the yoke is protruded as a rectangular shape and engaged to the connecting groove having a rectangular groove of the connecting part in order to prevent the yoke from being separated from the connecting part. The assembly of claim 7, wherein the connecting projection of the yoke is protruded as a trapezoid shape and engaged to the connecting groove having a corresponding trapezoid groove of the connecting part. The assembly of claim 7, wherein the connecting projection of the yoke is protruded long with two same stopping jaws at both sides thereof, and engaged to a stopping groove having a groove of a corresponding shape to the connecting part in order to prevent the yoke from being separated from the connecting part. The assembly of claim 1, wherein a step projection of a rectangular shape is formed at both ends of the yoke and engaged to a step projection formed at both ends of the connecting part with a corresponding rectangular shape. The assembly of claim 1, wherein the yoke has a constant inclined surface at both ends thereof and a corresponding inclined surface is also formed at both ends of the connecting part, so that the yoke is engaged to the connecting part.
Anspruch[fr]
Assemblage de stator pour moteur comprenant : une pluralité de carcasses (10) fabriquées par laminage d'une pluralité de feuilles d'acier ayant une longueur prédéterminée ; et une pluralité de pôles (20) engagés entre les carcasses et formés par moulage d'un matériau magnétique dans un moule, sur lequel est enroulée une bobine dans lequel chaque pôle comprend : une partie de guidage (23) ayant une forme en arc de cercle, pour collecter un flux magnétique ; une partie d'enroulement (22) connectée à une surface arrière de la partie de guidage, sur laquelle une bobine (30) est enroulée ; et une partie de connexion (21) formée au niveau d'une surface arrière de la partie d'enroulement et connectée aux carcasses (10),

caractérisé en ce que
une hauteur et une longueur de la partie d'enroulement (22) sont plus petites que celles de la partie de guidage (23) ; et une surface périphérique extérieure de la partie d'enroulement (22) est formée de façon concave de sorte que la bobine (30) peut être enroulée dessus.
Assemblage selon la revendication 1, dans lequel un isolant (40) est fixé à l'intérieur de la partie d'enroulement sur laquelle la bobine est enroulée et du pôle pour isoler le pôle de la bobine. Assemblage selon la revendication 1, dans lequel un matériau non-conducteur est moulé sur un côté intérieur de la partie d'enroulement sur laquelle la bobine est enroulée et sur le pôle pour isoler le pôle de la bobine. Assemblage selon la revendication 1, dans lequel la partie de guidage (23) a une surface intérieure en forme d'arc de cercle afin de collecter le flux magnétique sur un rotor par guidage du rotor. Assemblage selon la revendication 1, dans lequel un bord formé sur une surface périphérique extérieure de la partie d'enroulement (22) est formé comme une ligne courbe afin d'empêcher le revêtement de la bobine de se décoller quand la bobine est enroulée. Assemblage selon la revendication 1, dans lequel la partie de connexion a une forme en arc de cercle et est constituée d'une plaque ayant une hauteur constante et une largeur constante. Assemblage selon la revendication 6, dans lequel la carcasse est engagée entre deux parties de connexion différentes (21) et formée en conformité avec le fait qu'une pluralité de plaques de carcasse ayant un rayon de courbure constant sont laminées aussi hautes que la partie de connexion. Assemblage selon la revendication 7, dans lequel sont formées une projection de connexion et une rainure de connexion (21a) pour mettre en engagement la carcasse et la partie de connexion ayant la même hauteur que la carcasse et la partie de connexion. Assemblage selon la revendication 7, dans lequel la projection de connexion de la carcasse dépasse selon une forme rectangulaire et s'engage sur la rainure de connexion ayant une rainure rectangulaire de la partie de connexion afin d'empêcher la carcasse d'être séparée de la partie de connexion. Assemblage selon la revendication 7, dans lequel la projection de connexion de la carcasse dépasse selon une forme trapézoïdale et s'engage sur la rainure de connexion ayant une rainure trapézoïdale correspondante de la partie de connexion. Assemblage selon la revendication 7, dans lequel la projection de connexion de la carcasse dépasse parallèlement à deux mâchoires de serrage d'arrêt aux deux extrémités de celle-ci et s'engage sur une rainure d'arrêt ayant une rainure d'une forme correspondante à la partie de connexion afin d'empêcher la carcasse d'être séparée de la partie de connexion. Assemblage selon la revendication 1, dans lequel une projection étagée de forme rectangulaire est formée aux deux extrémités de la carcasse et s'engage sur une projection étagée formée aux deux extrémités de la partie correspondante avec une forme rectangulaire correspondante. Assemblage selon la revendication 1, dans lequel la carcasse a une surface en biais constante à ses deux extrémités et une surface en biais correspondante est également formée aux deux extrémités de la partie de connexion afin que la carcasse s'engage sur la partie de connexion.






IPC
A Täglicher Lebensbedarf
B Arbeitsverfahren; Transportieren
C Chemie; Hüttenwesen
D Textilien; Papier
E Bauwesen; Erdbohren; Bergbau
F Maschinenbau; Beleuchtung; Heizung; Waffen; Sprengen
G Physik
H Elektrotechnik

Anmelder
Datum

Patentrecherche

Patent Zeichnungen (PDF)

Copyright © 2008 Patent-De Alle Rechte vorbehalten. eMail: info@patent-de.com