Mechatronic actuator

专利摘要:
The present invention relates to a mechatronic actuator consisting of a housing incorporating a three-phase electric motor formed by a stator (32) excited by electric coils and by a magnetized rotor (71), driving an output shaft (17) by means of 'a gear train, the axis of said rotor (71), the axis of the output shaft and the axes of the intermediate toothed wheels being parallel, characterized in that characterized in that it comprises a metal spring ( 52) positioned in compression between an uninsulated region of the yoke of said stator (32) and a ground conductive track of a printed circuit (22). Abstract figure: figure 3
公开号:FR3096523A1
申请号:FR2005207
申请日:2020-05-20
公开日:2020-11-27
发明作者:Mathieu Watrin；Anthony Mellere
申请人:MMT SA；
IPC主号:

专利说明:

[0001] Description Title of the invention: Mechatronic actuator Field of the invention
[0001] The present invention relates to the field of mechatronic actuators intended in particular for the control of mechanical parts of a motor vehicle, for example ventilation grilles, air conditioning flaps or more generally valve shutters.
[0002] Known in the state of the art patent application DE102014107900 describing an actuator with an electric motor, in particular a brushless direct current motor comprising a stator and a rotor provided with a drive pinion which transmits the movement to a gear train with at least one intermediate wheel.
[0003] German patent application DE102011054955 describes another example of such an actuator of the prior art.
[0008] Preferably, the stator is positioned in the housing so that the axis of symmetry of one of said three coiled poles forms with the longitudinal plane of the housing an angle of 900.
[0009] [0009] According to a variant, the stator is positioned in the housing so that the axis of symmetry of said three coiled pole forming with the longitudinal plane of the housing an angle of between 70 and 1100 has a chamfer at the level of the area closest to the side wall.
[0010] According to a particular embodiment, said filtering capacitor is constituted by a tubular component mounted perpendicular to the plane of the printed circuit, said capacitor being positioned in the space delimited on the one hand by two consecutive stator poles (42,43 ), the pole of which is positioned between 70 and 110n relative to the median plane, and on the other hand by the angle of the housing located opposite said two complementary stator poles.
[0011] Preferably, all of the electronic components are soldered to the surface of the printed circuit oriented towards the stator, said printed circuit having a passage hole for the axis of the rotor and tinned holes for the insertion of the connection pads of the three electrical coils, as well as the pins of the electrical connector, said pins all extending parallel to the mechanical axes, towards the surface of the printed circuit.
[0012] Advantageously, the printed circuit has at least one hole or a notch for the passage of a mechanical axis of one of said toothed wheels.
[0013] Preferably, the printed circuit has a dimension such that its projection in a transverse plane fits into the projection of the circle circumscribed to said stator, on said transverse plane, except for the rear part of the printed circuit corresponding to the connection of the electrical connector and in that said printed circuit is positioned relative to said housing to preserve, with respect to the side faces on either side, a space of a width greater than 10% of the internal width of said housing.
[0014] The actuator according to the invention comprises according to a particular embodiment a metal spring positioned in compression between an uninsulated area of the yoke of said stator and a ground conductive track of the printed circuit.
[0015] Advantageously, said stator has an uninsulated bore to receive the lower part of said spring, the peripheral surface of said spring coming into contact with the uninsulated interior surface of said bore when the spring is put into compression by the printed circuit.
[0016] According to a particular variant, said housing is constituted by a shell and a complementary closing cover, one of the side faces of said shell 3 having an internal protuberance pierced by an opening cavity, positioned between two toothed wheels, and a second protuberance pierced by a cavity of non-circular section, said cover having two studs complementary to said cavities, of a length greater than other connecting studs, the cover also having guide bearings of the upper end of the mechanical axes .
[0017] Advantageously, said cover further has at least one stud forming a stopper for the printed circuit, said stopper not coming into contact with the printed circuit when the latter is in the nominal position.
[0018] [0018] According to a particular embodiment, said cover also has at least one stud forming a stopper for the stator, said stopper not coming into contact with the stator when the latter is in the nominal position.
[0019] [0019] According to another particular embodiment, the housing has three fixing extensions arranged at three corners of the housing, each of said extensions being crossed by a bore, the axis of which is parallel to the mechanical axes of the motor and of the toothed wheels. , one of said extension having a positioning tab in a complementary housing, another of said extensions having a claw of clipsagc during the pivoting of the housing relative to said positioning tab.
[0020] Detailed description of a non-limiting example of the invention
[0021] The present invention will be better understood on reading the detailed description of a non-limiting example of the invention which follows, with reference to the accompanying drawings where:
[0022] [0022] [fig.1] FIG. 1 represents a three-quarter perspective view from above of an actuator according to the invention;
[0023] [0023] [Fig.2] Figure 2 shows a view along a median sectional plane of the actuator according to the invention, cover and printed circuit removed;
[0024] [0024] [Fig.3] Figure 3 shows a view along a median sectional plane of the actuator according to the invention, cover removed;
[0025] [0025] [Fig.4] Figure 4 shows a detailed view of the electrical connection between the stator and the printed circuit;
[0026] [0026] [fig.5] Figure 5 shows a bottom view of the cover.
[0027] Figure 1 shows an external view of an example of an actuator, consisting of a shell (1) closed by a cover (2).
[0028] The shell (1) has three extensions (3, 4, 5) at three of its angles.
[0029] The two extensions (4, 5) have a dual function of fixing:
[0030] - either by screwing or rivet passing through the holes (7, 8)
[0031] [0031] - or by clipping.
[0032] To allow fixing by ipsagc clip, one of the extensions (5) has a tab (9) which can be wedged in a housing provided on a reception structure.
[0033] The extension (4), provided on the same side face (10) as the extension (5) provided with the tab (9), has a hook (11) which cooperates with a complementary part of the structure of welcome.
[0034] One of the transverse faces (13) is extended by a hollow sleeve (14) for the introduction of a male connector provided on a connection cord.
[0035] The cover (2) has an opening (15) inside which is placed a bearing (16) for guiding the output wheel.
[0036] Optionally, the housing can also be drilled symmetrically to allow the passage of a through transmission shaft or the connection to the actuator of two transmission shafts.
[0037] The output wheel may have different sections, on one side and the other, for the connection of axes of different sections.
[0038] Figure 2 shows a top view of the actuator after removal of the cover (2).
[0039] The output wheel (17) is driven by a gear train formed by a succession of toothed wheels (17 to 21), mounted on parallel axes, perpendicular to the connecting plane between the cover (2) and the shell (1).
[0040] The rotor (71) of the electric motor drives a wheel (21) driving the gear train.
[0041] The rotor axis passes through a bore in a printed circuit (22).
[0042] No electronic component is mounted on the upper face of the printed circuit (22) which allows an embodiment by a wave soldering process in a single simple machine pass.
[0043] The printed circuit (22) has a series of tinned holes (23 to 26) for the connection with the pins of the connector, extending perpendicular to the median plane.
[0044] It also has tinned holes (27 to 31) - a sixth tinned hole being masked in Figure 2 by the toothed wheel (20) - for the connection of the power supply pads of the electrical coils.
[0045] The surface of the printed circuit (22) does not cover the enveloping surface of the stator (32).
[0046] The projection of the circle circumscribed to the stator (32) on a transverse plane entirely covers the projected surface of the printed circuit (22) on this same plane, with the exception of the part (33) of the printed circuit (22). ) ensuring the connection with the connector.
[0047] Furthermore, the printed circuit (22) does not come into contact with the edges of the shell (1), but preserves on either side a space (34, 35) of a width greater than 10% the interior width of the hull (1).
[0048] The inner surface of the side wall (38) of the shell (1) has a first inner protrusion (36) and a second inner protrusion (37).
[0049] The first inner protrusion (36) is positioned in the space available between the output wheel (17) and the intermediate toothed wheel (19).
[0050] The second inner protrusion (37) is positioned in the corner of the shell (1) devoid of outer protuberance.
[0051] This opening cavity (40) is intended to receive an anti-rotation pin (61), visible in Figure 5 having a cross-shaped section and extending perpendicularly to the inner surface of the cover (2).
[0052] Figure 3 shows a view of the interior of the actuator after removal of the cover (2) and the printed circuit (22).
[0053] The stator (32) has three coiled poles (41 to 43) extending radially and is formed by a stacked sheet structure.
[0054] The median axes (44 to 46) of the respectively wound poles (41 to 43) form a mechanical angle of 1200 two by two.
[0055] The stator (32) is positioned in the shell (1) such that one of the poles (43) is oriented to form an angle of approximately 90 ° with respect to the lateral face (47).
[0056] A tolerance of ± 20 °, and preferably ± 10 ° is possible because the effect on the bulk remains minimal due to an impact according to the cosine of this angular variation.
[0057] This positioning of the rotor (32) also makes it possible to free up a space (49) between the two poles (42, 43) of the stator, and the angle (50) of the shell.
[0058] Detailed description of the grounding of the stator
[0059] FIG. 4 represents a partial enlarged view of the stator (32) and of the printed circuit (22).
[0060] To achieve the electrical grounding of the stator (32), the actuator comprises a spring (52) metal introduced into a through hole (53) formed in the statoriquc yoke.
[0061] On the opposite side, the spring (52) comes into contact with a conductive track of the printed circuit (22), which is connected to ground.
[0062] During the installation of the printed circuit, it comes to rest on the spring (52) and put it in compression, thus ensuring a good electrical and mechanical connection between the cylinder head of the stator (22) and the conductive track connected to ground.
[0063] Figure 5 shows a view of the inner surface of the cover (2).
[0064] It has a bearing (16) ensuring the positioning and guiding of the output wheel (17), as well as bearings (62 to 65) for positioning and guiding the ends of the axes of the toothed wheels respectively (18 to 21).
[0065] The cover (2) also has two assembly pins (60, 61) whose length is greater than the bearings (62 to 65) so as to allow the precise positioning of the cover (2) relative to the shell (1) and mechanical elements, in particular the axes of the intermediate toothed wheels, of the output wheel and of the rotor (71), so that, when the cover (2) is brought closer to the shell (1) , the ends of the axes engage without difficulty in the corresponding bearings.
[0066] [0066] The cover also has four stops (66 to 69) intended to limit unexpected movements of the printed circuit (22) resulting from vibration.
[0067] A pad (70) similarly limits the movement of the stator (32) without coming into contact with the latter when it is in the nominal position.
7 [Claim 1] [Claim 2] [Claim 3] [Claim 4] [Claim 5] [Claim 6] [Claim 7]

权利要求:
Claims (1)
[0001]
CLAIMS - Mechatronic actuator consisting of a housing incorporating a three-phase electric motor formed by a stator (32) excited by electric coils and by a magnetized rotor (71), driving an output shaft (17) via a train of gears, the axis of said rotor (71), the axis of the output shaft (17) and the axes of the intermediate toothed wheels (18 to 20) being parallel, characterized in that it comprises a metal spring (52) positioned in compression between a non-electrically insulated area of the yoke of said stator (32) and a ground conductive track of a printed circuit (22). - Mechatronic actuator according to the preceding claim characterized in that said stator (32) has a bore (53) not insulated to receive the lower part of said spring (52), the peripheral surface of said spring (52) coming into contact with the inner surface not isolated from said bore (53) when the spring (52) is compressed by the printed circuit (22). - Mechatronic actuator according to claim 1 and / or claim 2 characterized in that all of the electronic components are soldered to the surface of the printed circuit (22) oriented towards the stator (32), said printed circuit (22) having a hole passage of the rotor axis. - Mechatronic actuator according to at least one of claims 1 to 3 characterized in that said printed circuit (22) also has tinned holes (27 to 31; 23 to 26) for inserting the connection pads of the electric coils . - Mechatronic actuator according to at least one of claims 1 to 3 characterized in that said printed circuit (22) further has tinned holes (27 to 31; 23 to 26) for inserting the pins of the electronic connector, said pins all extending parallel to the mechanical axes, toward the surface of the printed circuit board. - Mechatronic actuator according to any one of claims 1 to 3 characterized in that said stator (32) having three wound poles (41 to 43), the axes of symmetry of two consecutive wound poles forming a mechanical angle of 1200, the housing also incorporating an electronic circuit (22). - Mechatronic actuator according to any one of claims 1 to 3 characterized in that the printed circuit (22) has at least one 8 [Claim 8] [Claim 9] [Claim 10] [Claim 11] [Claim 12] or a notch for the passage of a mechanical axis of one of said toothed wheels. - Mechatronic actuator according to any one of claims 1 to 3 characterized in that the printed circuit (22) has a dimension such that its projection in a transverse plane fits into the projection of the circle circumscribed to said stator (32), on said transverse plane, except for the rear part of the printed circuit (22) corresponding to the connection of the electrical connector (14). - Mechatronic actuator according to claim 1 to 3 characterized in that said housing is constituted by a shell (1) and a closing cover (2) complementary, one of the side faces of said shell (1) having an inner protuberance ( 36) pierced by an emerging cavity (39), positioned between two toothed wheels (17 and 19), and a second protuberance (37) pierced by a cavity (40), said cover (2) having two complementary studs (60, 61) ) to said cavities (39, 40), of a length greater than the guide bearings (62 to 65) of the upper ends of the mechanical pins, said guide bearings (62 to 65) extending to the inner surface of the cover (2 ). - Mechatronic actuator according to at least one of the preceding claims characterized in cc that the housing has three fixing extensions arranged at three corners of the housing (3 to 5), each of said extensions (3 to 5) being crossed by a bore (6 to 8) whose axis is parallel to the mechanical axes of the motor and the toothed wheels, one (said extensions (5) having a lug (9) for positioning in a complementary housing, another of said extensions (4) having a clipping claw (11) during pivoting of the housing relative to said positioning lug (9). - Mechatronic actuator according to claim 1 to 3, characterized in that said housing consists of a shell (1) and a cover closure (2), said cover (2) also has at least one stud (66 to 69) forming a stop for the printed circuit (22), said stop not coming into contact with the printed circuit (22) when the latter is in po nominal sition. - Mechatronic actuator according to claim 1 to 3 characterized in that said housing is constituted by a shell (1) and a closing cover (2) complementary, said cover further has at least one stud (70) forming a stop for the stator (32), said stopper not coming into contact with stator (32) when the latter is in nominal position. 9

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法律状态:
2020-11-20| PLFP| Fee payment|Year of fee payment: 5 |

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2020-11-27| PLSC| Publication of the preliminary search report|Effective date: 20201127 |

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2021-11-17| PLFP| Fee payment|Year of fee payment: 6 |

优先权:

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申请号 | 申请日 | 专利标题

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FR1662976A|FR3060892B1|2016-12-21|2016-12-21|MECHATRONIC ACTUATOR|

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FR1662976|2016-12-21|

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FR2005207A|FR3096523B1|2016-12-21|2020-05-20|Mechatronic actuator|FR2005207A| FR3096523B1|2016-12-21|2020-05-20|Mechatronic actuator|