WO2021227780A1

WO2021227780A1 - Drive device and vehicle sunroof

Info

Publication number: WO2021227780A1
Application number: PCT/CN2021/088100
Authority: WO
Inventors: 古雄亮; 欧阳帆; 邝伟耀
Original assignee: 广东德昌电机有限公司
Priority date: 2020-05-13
Filing date: 2021-04-19
Publication date: 2021-11-18
Also published as: CN213228278U

Abstract

A drive device, comprising a motor (10) and a gear box (20) connected to the motor. The gear box comprises a housing (30), a transmission mechanism (40) provided in the housing, and a cover plate (50) individually formed and assembled to the housing. The transmission mechanism comprises an output member (42). The output member at least partially protrudes from the top surface of the cover plate. A retaining wall (53) arranged opposite the output member is formed on the cover plate. A cable is arranged between the retaining wall and the output member, and is transmittingly engaged with the output member. Also disclosed is a vehicle sunroof.

Description

Driving device and vehicle sunroof

Technical field

The utility model relates to the technical field of motor driving, in particular to a driving device and a vehicle sunroof.

Background technique

The common vehicle sunroof mainly drives the cable through the driving device to control the opening and closing of the sunroof. The driving device generally includes a motor and a gear box connected with the output shaft of the motor. The gear box includes a box body and an output gear protruding outside the box body, wherein a retaining wall is integrally formed on the box body for guiding the cable to mesh with the output gear, so as to drive the opening and closing of the sunroof under the drive of the output gear. However, for the design of the retaining wall integrally formed on the box body, once the retaining wall of the existing gear box does not match the fitting installation structure of the vehicle sunroof of the vehicle manufacturer, the entire gear box body has to be replaced. As a result, the entire box body needs to be redesigned and mold opened, which leads to a prolonged development cycle and increased costs.

technical problem

In view of this, the present invention aims to provide a driving device and a vehicle sunroof that can solve the above-mentioned problems.

Technical solutions

To this end, the present invention provides a driving device, which is used to drive the cable to move to control the vehicle sunroof. The driving device includes a motor and a gear box connected with the motor. The gear box includes a housing and is arranged at The transmission mechanism in the housing and the cover plate separately formed and assembled to the housing, the transmission mechanism includes an output piece, the output piece at least partially protrudes from the top surface of the cover plate, the cover plate A retaining wall arranged opposite to the output member is formed thereon, and the retaining wall is spaced from the output member so as to be suitable for arranging the cable so that the cable is drivingly engaged with the output member.

In some embodiments, the housing further includes a receiving cavity for accommodating the transmission mechanism, and the cover plate covers the opening of the receiving cavity.

In some embodiments, the driving device further includes a spacer fixedly arranged between the output member and the retaining wall, so that the cable is in direct contact with the spacer, and the spacer The wear resistance is higher than that of the cover plate.

In some embodiments, the spacer includes a sheet-shaped body and a side wall extending substantially perpendicularly from the side surface of the sheet-shaped body, and the cover plate includes a groove recessed from the top surface thereof for receiving the spacer. The output piece penetrates the groove and the center of the piece body, and the side wall of the spacer is attached to the surface of the retaining wall opposite to the output piece.

In some embodiments, the side wall of the spacer includes a strip-shaped body and a buckle portion extending at an angle from a side surface of the strip-shaped body, and the strip-shaped body is opposite to the output piece of the retaining wall. , The buckling part is buckled on the outer wall of the retaining wall.

In some embodiments, the surface of the retaining wall opposite to the output member includes a protruding top portion.

In some embodiments, the surface of the retaining wall opposite to the output member includes a protruding top portion, and the side wall of the spacer includes a middle section, wherein the middle section is correspondingly attached to the top portion.

In some embodiments, the surface of the retaining wall opposite to the output member includes a protruding top portion and two spacers respectively located on both sides of the top portion, and the sidewall of the spacer includes a middle section and a respective The two spaced sections located at both ends of the middle section, wherein the middle section is correspondingly attached to the top of the abutment, and the two spaced sections and the two spaced parts are respectively attached to the top.

In some embodiments, the length of the intermediate section of the spacer along the cable direction is not less than the linear length of the meshing surface of the cable and the output member and/or is not greater than the length of the output member. diameter. In some embodiments, the linear length of the side wall of the spacer along the cable direction is not less than the diameter of the output member and/or is not greater than the length of the sheet-shaped body along the cable direction .

In some embodiments, the cover plate and the housing are connected by ultrasonic welding, fasteners, laser welding, heat melting, snapping, or a combination of two or more of them.

In some embodiments, two retaining walls are formed on the cover plate opposite to and spaced apart from the output member.

In some embodiments, the transmission mechanism is integrally formed by overmolding.

The utility model also provides a vehicle sunroof, which includes a cable, a sunroof, and the aforementioned driving device; the driving device controls the opening and/or closing of the sunroof through the cable.

Beneficial effect

The cover plate and the casing of the present invention are mutually independent components, that is, the cover plate and the casing are separately formed and then assembled and connected. Therefore, if the customer's sunroof adapting and installing structure is different, only need to change the design of the cover according to the actual situation. The driving device of the utility model can flexibly select an adapted cover plate according to the needs of different customers, and then assemble it with a standardized housing, without the need for time-consuming and laborious design and/or replacement of the entire gear box.

Description of the drawings

Fig. 1 is a perspective view of the driving device of the first embodiment of the present invention.

Fig. 2 is an exploded view of the driving device shown in Fig. 1.

Fig. 3a is a top view of the driving device shown in Fig. 1.

Fig. 3b is a top view of a spacer of the driving device shown in Fig. 1.

Fig. 3c is a perspective view of the spacer of the driving device of the second embodiment of the present invention.

Fig. 4 is an exploded view of the transmission structure of the driving device of the third embodiment of the present invention.

Fig. 5 is another exploded view of the transmission structure of the driving device of the third embodiment of the present invention.

Fig. 6 is an exploded view of the driving device of the fourth embodiment of the present invention.

Embodiments of the present invention

Hereinafter, the present utility model will be described in detail with reference to the accompanying drawings and specific embodiments, so as to make the technical solution of the present utility model and its beneficial effects clearer. It can be understood that the drawings are only provided for reference and illustration, and are not used to limit the present invention. The dimensions shown in the drawings are only for the convenience of clear description, and do not limit the proportional relationship.

1 to 2, the driving device for a vehicle sunroof according to the first embodiment of the present invention includes a motor 10 and a gear box 20 connected to the motor 10. A worm 12 is connected to the output shaft 11 of the motor 10 in a torsion-resistant manner. The gear box 20 includes a housing 30, a transmission mechanism 40 arranged in the housing 30, and a cover plate 50 assembled to the housing 30, wherein the transmission mechanism 40 includes a gear that meshes with the worm 12 The worm wheel 41 and the output member connected to the center of the worm wheel 41 in a torsion-resistant manner. The output member includes an output gear 42, and the output gear 42 partially protrudes from the top surface of the cover plate 50. It is understandable that in other embodiments, the driving device may also adopt other transmission mechanisms, as long as it can transmit the torque of the motor 10 to the output gear 42 and preferably has a deceleration function.

Specifically, the housing 30 is substantially in the shape of a cuboid, and includes a first receiving cavity 31 recessed laterally from one side surface thereof, and a second receiving cavity 32 recessed axially from the top surface thereof. The first accommodating cavity 31 and the second accommodating cavity 32 are communicated through a lateral through hole 33, wherein the axis of the first accommodating cavity 31 is perpendicular to the axis of the second accommodating cavity 32. The worm 12 is accommodated in the first accommodating cavity 31, the worm wheel 41 is accommodated in the second accommodating cavity 32, and the worm 12 and the worm wheel 41 are meshed at the through hole 33. The center of the second receiving cavity 32 extends vertically to form a fixed shaft 320. The transmission mechanism 40 is rotatably sleeved on the fixed shaft 320.

The cover plate 50 has a circular shape, and a first through hole 51 is formed in the center thereof. The cover plate 50 covers the opening of the second receiving cavity 32, and the output gear 42 passes through the first through hole 51 to partially protrude from the top surface of the cover plate 50.

The cover plate 50 can be fixedly connected to the housing 30 by means of fasteners. As shown in the figure, a plurality of lugs 52 are symmetrically formed on the circumferential side of the cover plate 50 in this embodiment. Correspondingly, the top surface of the housing 30 is correspondingly recessed and formed to receive the lugs 52. In the groove 34, the screw 520 penetrates the lug 52 and is connected with the thread in the installation groove 34.

Preferably, an annular groove 43 is formed between the worm gear 41 and the output gear 42, and a wave washer 44 is arranged in the annular groove 43 to reduce the impact and vibration between the transmission mechanism 40 and the cover plate 50. In this embodiment, the wave washer 44 includes a plurality of peaks 440 protruding in the axial direction and valleys 441 recessed in the axial direction. The peaks 440 and the valleys 441 are curved and arranged alternately in the circumferential direction. Understandably, in other embodiments, the wave washer may also adopt other structures.

Referring to FIGS. 1 to 3a at the same time, the cover plate 50 is formed with a retaining wall 53 opposite to the output gear 42 and arranged at intervals. The retaining wall 53 is preferably formed integrally with the cover plate 50. Preferably, two retaining walls 53 are formed on the cover plate 50, and the two retaining walls 53 are respectively arranged on opposite sides of the output gear 42 and are symmetrical to the output gear 42. Each retaining wall 53 is spaced from the corresponding side of the output gear 42 to form an accommodation channel 530 for accommodating a cable (not shown) for controlling the opening and closing of the sunroof, wherein a tooth is formed on the cable. During installation, the cable is arranged between the retaining wall 53 and the output gear 42 and meshes with the output gear 42. In this way, when the motor 10 works, the output gear 42 rotates to drive the cable to translate, thereby controlling the opening and closing of the sunroof of the vehicle.

In this embodiment, the cover plate 50 and the housing 30 are mutually independent components, that is, the cover plate 50 and the housing 30 are respectively formed and then assembled and connected. Therefore, if the customer's sunroof adapting and installing structure is different, it is only necessary to change the design of the cover plate 50 according to the actual situation. The driving device of the present invention can flexibly select the suitable cover plate according to the needs of different customers, and then assemble it with the standardized housing 30, without the need for time-consuming and laborious design and/or replacement of the entire gear box. When assembling, first sleeve the transmission mechanism 40 on the fixed shaft 320 from top to bottom, and then align the first perforation 51 of the cover plate 50 with the output gear 42 to cover the opening of the second receiving cavity 32 from top to bottom, and then It is sufficient to connect the cover plate 50 and the housing 30 in a fixed manner.

Referring to FIGS. 2 to 3b at the same time, preferably, the cover plate 50 includes a groove 54 recessed from its top surface. The driving device further includes a spacer 60, and the spacer 60 includes a sheet-shaped body 61 and two side walls 62 respectively extending vertically from two sides of the sheet-shaped body 61. The sheet body 61 is received in the groove 54. The side wall 62 is fixedly connected to the corresponding retaining wall 53. The wear resistance of the material of the spacer 60 is higher than the wear resistance of the material of the cover plate 50, and therefore is also higher than the wear resistance of the retaining wall 53. For example, the spacer 60 may be an iron sheet. The cover plate 50 and the retaining wall 53 may be integrally made of plastic. After the cable is assembled with the cover plate 50 in this embodiment, since the cable is in direct contact with the spacer 60 with higher wear resistance, instead of directly contacting the cover plate 50 and the retaining wall 53, the service life of the gear box 20 is prolonged. . In addition, the design of the groove 54 prevents the sheet-shaped body 61 of the spacer 60 from protruding from the cover plate, which has a better appearance, and also plays a good role in fixing and limiting the sheet-shaped body 61.

In this embodiment, the groove 54 has a square shape as a whole and is located in the center of the cover plate 50. The first through hole 51 is formed in the center of the groove 54. Corresponding to the groove 54, the sheet-shaped body 61 of the spacer 60 has a square shape as a whole, and a second hole 63 corresponding to the first hole 51 is formed in the center. The retaining wall 53 is arranged adjacent to the corresponding groove edge 540. Correspondingly, the side wall 62 of the spacer 60 is fixedly connected to the corresponding retaining wall 53. Preferably, the linear length A of the side wall 62 of the spacer 60 in the cable direction is not less than the diameter D of the output gear 42, and more preferably, it is not greater than the length B of the sheet-shaped body 61 of the spacer 60 in the cable direction. , So as to ensure the translational stability of the cable while avoiding the unnecessary restriction of the spacer 60 on the cable.

Preferably, the surface of the retaining wall 53 opposite to the output gear 42 includes a top portion 531 protruding from the center thereof, and two spacer portions 532 respectively located on both sides of the top portion 531, wherein the spacer portion 532 and the corresponding groove The edge 540 is flush, and the abutting top 531 is closer to the output gear 42 relative to the corresponding side wall of the groove 54. Correspondingly, the side wall 62 of the spacer 60 includes a middle section 620 and two spacer sections 621 respectively located at two ends of the middle section 620, wherein the middle section 620 is correspondingly attached to the top 531, and the two spacer sections The 621 and the two spacers 532 are respectively attached to each other in a one-to-one correspondence, thereby effectively preventing the spacer 60 from moving during the translational process of the cable. During installation, the cable is arranged between the output gear 42 and the middle section 620 so that one side of it meshes with the output gear 42 and the other side abuts the middle section 620. In this way, the cable can be more stably meshed with the output gear 42 and the translation process is stable. Preferably, the length C of the intermediate section 620 along the cable direction is not less than the linear length of the meshing surface between the cable and the output gear 42, and more preferably, it is not greater than the diameter D of the output gear 42. In this way, it can be There is a balance between the translational stability and smoothness of the cable. In this embodiment, the length direction of the top portion 531 along the cable direction is arranged to intersect the axis of the output shaft 11 of the motor 10, and correspondingly, the length direction of the groove 54 and the middle section 620 along the cable direction are also arranged with the motor The axes of the output shaft 11 of 10 intersect.

It is worth noting that the aforementioned straight length is opposite to the curve length, for example, the straight length A and the sidewall 62 of the spacer 60 along one of the spacer sections 621, the middle section 620, and the other spacer section 621 The length of the surface extension is relative; and the linear length of the meshing surface of the output gear 42 is opposite to the arc length of the circumferential side surface of the gear. In fact, it can be understood as the chord length of the corresponding arc of the meshing surface of the output gear 42.

In this embodiment, the transmission mechanism 40 is integrally formed in an overmold manner.

Of course, it is understandable that in other embodiments, the transmission mechanism 40 can also be assembled in other ways. For details, please refer to the embodiments corresponding to FIGS. 4 and 5 which will be introduced later.

It is also understandable that in other embodiments, the spacer may also adopt other structures and/or structures to cooperate with the cover plate. For example, in some embodiments, the cover plate 50 may not form the groove 54. The spacer can also adopt other structures and/or structures to cooperate with the retaining wall, please refer to Figure 3c for details.

FIG. 3c shows a perspective view of the spacer 160 of the driving device of the second embodiment of the present invention. The spacer 160 includes a sheet-shaped body 161 having a substantially square shape, and two side walls 162 respectively extending perpendicularly from two opposite side surfaces of the sheet-shaped body 161. A through hole 163 is also formed in the center of the sheet-shaped body 161. The side wall 162 of the spacer 160 includes a strip-shaped main body 164, and two first buckling portions 165 extending from opposite ends of the strip-shaped main body 164 along its length. The two first buckling portions 165 and The strip body 164 is arranged at an angle. More preferably, the side wall 162 of the spacer 160 further includes a second buckling portion 166 extending from one side of the strip-shaped main body 164 along its length direction, and the second buckling portion 166 is connected to the strip-shaped main body 164. 164 is arranged at an angle. Corresponding to the spacer 160 in this embodiment, the surface of the retaining wall (not shown) facing the output gear is also adaptively changed, for example, it may only be flat. During installation, the sheet-shaped body 161 of the spacer 160 is received in the corresponding groove, and the strip body 164 of the spacer 160 is attached to the flat surface of the retaining wall facing the output gear. The portion 165 and the second buckling portion 166 can be buckled on the corresponding parts of the outer wall of the retaining wall.

4 and 5 show an exploded view of the transmission mechanism 40 of the driving device of the third embodiment of the present invention.

In FIGS. 4 and 5, the output gear 42 is an integral piece, and includes a cylindrical body 420 with a through hole 424, a number of teeth 421 formed on the circumferential side of one end of the cylindrical body 420, and an end surface from the other end of the cylindrical body 420. An annular flange 422 extending radially outward. A plurality of clamping grooves 423 are formed at the bottom axial end of the annular flange 422.

The worm wheel 41 includes a worm wheel body 410 with a central hole 414 and a snap ring 411 integrally formed with the worm wheel body 410. A plurality of protrusions 412 are formed at the top axial end of the worm gear body 410 in the snap ring 411 for snap-fitting with the plurality of grooves 423 on the annular flange 422 in the axial direction, so that when When the worm gear 41 rotates, the output gear 42 also rotates. The snap ring 411 includes a connecting ring 413 extending from the axial top end of the output gear 42 upward in the axial direction, and an inner ring 415 extending from the top end of the connecting ring 413 radially inward. . The snap ring 411 and the axial top end of the worm gear 41 form an annular cavity 416 for receiving the annular flange 422 of the output gear 42. When assembling the transmission mechanism 40 into the housing 30, it is only necessary to pass the fixed shaft 320 through the central hole 414 of the worm wheel 41 and the through hole 424 of the output gear 42 in sequence.

By arranging the annular flange 422 of the output gear 42 in the annular cavity 416 of the worm gear 41, not only can the connection strength of the two be further improved, thereby improving the transmission stability of the two, but also the worm gear 41 can be positioned so that the worm gear 41 is It is possible to maintain a certain gap between the axial ends and the cover plate 50 and the housing 30, thereby reducing the rotation resistance of the worm wheel 41 and reducing the vibration and noise of the entire driving device. It is understandable that in other embodiments, the worm gear 41 and the output gear 42 may be arranged in a torque-proof manner in other ways.

Referring to Figure 6, the driving device of the fourth embodiment of the present invention is similar to the driving device of the aforementioned first embodiment, and the same parts will not be repeated here. The main difference from the driving device of the first embodiment is: In the embodiment, the cover 150 and the housing 130 are fixedly connected by ultrasonic welding.

Specifically, the housing 130 further includes an annular supporting surface 35 recessed from the top surface of the supporting surface 35 in the axial direction, and the inner side of the supporting surface 35 is adjacent to the second receiving cavity 32. The lug 52 is no longer formed on the circumferential side of the cover plate 150, but is directly supported on the supporting surface 35 via its bottom surface, and the supporting surface 35 and the corresponding bottom surface periphery of the cover plate 150 are made by ultrasonic welding. The cover plate 150 and the housing 130 are fused together to fix and connect the cover plate 150 and the housing 130.

It is understandable that, in other embodiments, the cover plate and the housing can also be connected in other ways, such as laser welding, hot melting, or snapping, etc., and the aforementioned ultrasonic welding, fasteners, laser welding, and thermal welding can also be used. Two or more combined connection modes of welding and snapping are used for connection.

Like the first embodiment, the transmission mechanism 140 in this embodiment is also integrally formed by overmold. The worm wheel 141 (for example, plastic material) of the transmission mechanism 140 is overmolded on a part of the surface of the output gear 142 (for example, the aforementioned annular flange 422), so that the worm wheel 141 and the gear 142 cannot be separated after being integrally formed .

In addition, the present invention also provides a vehicle sunroof, including a cable, a sunroof, and the aforementioned driving device; the driving device controls the opening and/or closing of the sunroof through the cable.

The above are only the preferred specific embodiments of the present utility model. The scope of protection of the present utility model is not limited to the above-listed examples. It is obvious that any person skilled in the art within the technical scope disclosed in the present utility model Simple changes or equivalent replacements of the obtained technical solutions fall within the protection scope of the present invention.

Claims

A driving device for driving a cable to move. The driving device includes a motor and a gear box connected to the motor. The gear box is characterized in that the gear box includes a housing and a transmission mechanism arranged in the housing , And a cover plate separately molded and assembled to the housing, the transmission mechanism includes an output piece, the output piece at least partially protruding from the top surface of the cover plate, the cover plate is formed with the output The retaining wall is arranged opposite to each other, and the retaining wall is spaced from the output member so as to be suitable for arranging the cable so that the cable is drivingly engaged with the output member.
The driving device according to claim 1, wherein the housing further comprises a receiving cavity for accommodating the transmission mechanism, and the cover plate covers the opening of the receiving cavity.
The driving device according to claim 1, wherein the driving device further comprises a spacer fixedly arranged between the output member and the retaining wall, so that the cable and the spacer are directly connected to each other. Contact, and the wear resistance of the spacer is higher than the wear resistance of the cover plate and/or the retaining wall.
The driving device according to claim 3, wherein the spacer includes a sheet-shaped body and a side wall extending from the sheet-shaped body, and the cover includes a groove recessed from its top surface for The sheet-shaped body accommodating the spacer, the output piece penetrates the groove and the center of the sheet-shaped body, and the side wall of the spacer is attached to the surface of the retaining wall opposite to the output piece combine.
The driving device according to claim 4, wherein the side wall of the spacer comprises a strip-shaped body and a buckling part extending at an angle from the side of the strip-shaped body, the strip-shaped body and the stopper The surface of the wall opposite to the output member is attached, and the buckling part is buckled on the outer wall of the retaining wall.
The driving device according to claim 1, wherein the surface of the retaining wall opposite to the output member includes a protruding top portion.
The driving device according to claim 3, wherein the surface of the retaining wall opposite to the output member includes a protruding top portion, and the spacer includes a sheet-shaped body and a side extending from the sheet-shaped body. The wall, the side wall of the spacer includes a middle section, wherein the middle section is correspondingly attached to the top of the abutment.
The driving device according to claim 7, wherein the surface of the retaining wall opposite to the output member further comprises two spacers respectively located on two sides of the abutting top, and the side walls of the spacer further comprise Two spaced sections located at both ends of the middle section, wherein the two spaced sections and the two spaced parts are respectively attached to each other correspondingly.
The driving device according to claim 7, wherein the length of the intermediate section of the spacer along the cable direction is not less than the linear length of the meshing surface of the cable and the output member and/ Or not greater than the diameter of the output member; the linear length of the sidewall of the spacer along the cable direction is not less than the diameter of the output member and/or not greater than the diameter of the sheet-shaped body The length of the cable direction.
The driving device according to claim 1, wherein the cover plate and the housing are connected by ultrasonic welding, fasteners, laser welding, heat melting, snapping, or a combination of two or more of them.
The driving device according to claim 1, wherein the cover plate is formed with two retaining walls opposite to the output member and spaced apart, and the transmission mechanism is integrally formed by overmolding .
A vehicle sunroof, characterized by comprising a cable, a sunroof, and the driving device according to any one of claims 1 to 11; the driving device controls the opening and/or closing of the sunroof through the cable.