Automobile seat folding driving motor module

Abstract

The invention discloses an automobile seat folding driving motor module which comprises a driving motor and a reduction gearbox assembly, the reduction gearbox assembly comprises a box body and a box cover, and a power output shaft of the driving motor is connected with a driving worm; a first planet carrier, a driving worm gear, an inner gear ring and a power output piece are embedded in a circular containing cavity of the box body, the driving worm gear is meshed with the driving worm, and the first planet carrier is provided with a plurality of first planet gears; a first sun gear is arranged on the upper surface of the driving worm gear, and the first planet gears are engaged with the first sun gear; a second sun gear is arranged on the upper surface of the first planet carrier, and the second sun gear and the first planet carrier are of an integrated structure; the power output part comprises a hollow shaft and a second planet carrier, the second planet carrier is provided with a plurality of second planet gears, and each second planet gear is meshed with the second sun gear; and each first planet wheel and each second planet wheel are respectively meshed with the inner gear ring. By means of the structural design, the double-clutch transmission has the advantages of being novel in structural design, large in output torque and good in reliability.

Description

Technical Field

[0001] The invention relates to the technical field of automobile accessories, and in particular to a folding drive motor module for an automobile seat. Background Art

[0002] For seven-seat SUVs or MPVs, the third row of seats can be folded and flipped according to the user's needs; when needed, the third row of seats can be flipped open; when not needed, the third row of seats can be folded and folded. The electric flipping and folding of the seats is powered by the corresponding motor module, which is generally a reduction motor assembly.

[0003] The patent number is: ZL202123240717.8, and the patent name is: A Chinese invention patent for a worm gear planetary reduction motor, which discloses the following technical solutions, specifically: a worm gear planetary reduction motor, including a motor body and a reduction box connected to the motor body, a motor shaft is provided in the motor body, and the part of the motor shaft extending into the reduction box forms a worm, the reduction box includes a box body and a cover plate buckled on the box body, a helical gear meshing with the worm, a planetary gear structure and an output shaft are provided in the box body, and the planetary gear structure includes a gear arranged on the inner wall of the box body and connected to the box body. An integrally formed inner gear ring, a sun gear arranged in the inner gear ring, three planetary gears arranged around the sun gear and respectively meshing with the sun gear and the inner gear ring, and a planetary carrier for supporting the three planetary gears, the sun gear shaft of the sun gear is inserted in the through hole of the helical gear and the sun gear rotates with the rotation of the helical gear, the output shaft is inserted in the through hole of the planetary carrier and rotates in turn through the sun gear shaft and the cover plate of the sun gear and extends out of the box body, the worm drives the helical gear to rotate, the helical gear drives the sun gear to rotate, the sun gear drives the planetary gears to rotate, the planetary gears drive the planetary carrier to rotate, and the planetary carrier drives the output shaft to rotate.

[0004] When the worm gear planetary reduction motor is working, the motor is powered on and rotates, the worm drives the helical gear to rotate, the helical gear drives the sun gear to rotate, the sun gear drives the planetary gear to rotate, the planetary gear drives the planetary carrier to rotate, and the planetary carrier drives the output shaft to rotate, thereby outputting rotation speed and torque.

[0005] It should be pointed out that the above-mentioned automobile seat folding drive motor module has the following defects, specifically:

[0006] Defect 1. The car seat folding drive motor module adopts a single-stage planetary reduction structure, which has limited output torque and is difficult to meet the requirements of flipping and folding of different car seats;

[0007] Defect 2: Insufficient heat dissipation capacity and poor product reliability. Summary of the invention

[0008] The object of the present invention is to provide a car seat folding drive motor module to address the deficiencies of the prior art. The car seat folding drive motor module has a novel structural design, a large output torque and good reliability.

[0009] To achieve the above object, the present invention is implemented through the following technical solutions.

[0010] A car seat folding drive motor module includes a drive motor and a reduction box assembly. The reduction box assembly includes a box body, the box body is provided with a circular receiving cavity opening upward, and a box cover is fixedly installed at the upper end of the box body at the upper opening position of the circular receiving cavity; the housing of the drive motor is fixedly installed on the box body, and the power output shaft of the drive motor is connected with a drive worm horizontally extending into the circular receiving cavity;

[0011] The first planet carrier, the driving worm gear, the inner gear ring, and the power output member are embedded in the circular receiving cavity. The driving worm gear is meshed with the driving worm. The first planet carrier is pivotally connected to a plurality of first planet gears distributed in an annular array through first planet pins.

[0012] A first central gear is coaxially arranged on the upper surface of the driving worm gear. The first central gear and the driving worm gear are an integral structure. All first planetary gears surround the periphery of the first central gear, and each first planetary gear is meshed with the first central gear respectively.

[0013] A coaxially arranged second sun gear is disposed on the upper surface of the first planet carrier, and the second sun gear and the first planet carrier are an integral structure;

[0014] The power output member includes a hollow shaft arranged vertically, a core through hole extending axially therethrough is provided in the core of the hollow shaft, a second planet carrier coaxially arranged with the hollow shaft is provided at the upper end of the hollow shaft, the second planet carrier and the hollow shaft are an integral structure, the second planet carrier is pivotally connected to a plurality of second planetary gears distributed in an annular array through second planetary pins, all the second planetary gears surround the periphery of the second central gear, and each second planetary gear is respectively meshed with the second central gear;

[0015] The first planet carrier is located at the lower end side of the second planet carrier, and the first planet carrier and the second planet carrier are respectively located on the inner side of the inner gear ring, each first planetary gear and each second planetary gear are respectively meshed with the inner gear ring, and the first planet carrier and the driving worm gear are respectively rotatably mounted on the outer periphery of the hollow shaft.

[0016] Wherein, the box body is provided with a lower through hole which penetrates vertically corresponding to the hollow shaft, and the box cover is provided with an upper through hole which penetrates vertically corresponding to the hollow shaft;

[0017] The upper end of the hollow shaft is connected to the box cover through an upper end bearing bushing, and the lower end of the hollow shaft is connected to the box body through a lower end bearing bushing.

[0018] The upper end of the inner gear ring is provided with at least two positioning protrusions which are arranged at intervals in the circumferential direction and protrude outward respectively, and the upper edge of the box body is provided with positioning grooves corresponding to the positioning protrusions respectively, and the positioning protrusions of the inner gear ring are respectively embedded in the corresponding positioning grooves;

[0019] The inner gear ring is vertically limited and fixed between the box body and the box cover.

[0020] Compared with the prior art, the present invention has the following beneficial effects, specifically:

[0021] 1. The reduction gearbox assembly of the present invention is realized by a double-stage planetary reduction structure, which can effectively increase the output torque, thereby making the automobile seat folding drive motor module of the first embodiment of the present invention effectively applicable to the use requirements of flipping and folding of different automobile seats;

[0022] 2. The hollow shaft of the present invention adopts a hollow structure design, which can effectively improve the heat dissipation capacity of the product, thereby improving the reliability of the product;

[0023] 3. Therefore, the automobile seat folding drive motor module of the present invention has the advantages of novel structural design, large output torque and good reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention is further described below with the aid of the accompanying drawings. However, the embodiments in the accompanying drawings do not constitute any limitation to the present invention.

[0025] Figure 1 It is a structural schematic diagram of the present invention.

[0026] Figure 2 It is a schematic diagram of the decomposition of the present invention.

[0027] Figure 3 It is a cross-sectional schematic diagram of the present invention.

[0028] Figure 4 It is a cross-sectional schematic diagram of another position of the present invention.

[0029] Figure 5 It is a structural schematic diagram of the box body of the present invention.

[0030] exist Figures 1 to 5 Included are:

[0031] 1-driving motor; 2-reduction gearbox assembly; 31-housing; 311-circular storage cavity; 312-lower through hole; 313-positioning groove; 32-housing cover; 321-upper through hole; 4-driving worm; 51-first planetary carrier; 52-first planetary pin; 53-first planetary gear; 54-second central gear; 61-driving worm gear; 62-first central gear; 7-inner gear ring; 71-positioning protrusion; 8-power output member; 81-hollow shaft; 811-core through hole; 82-second planetary carrier; 83-second planetary pin; 84-second planetary gear; 91-upper bearing bushing; 92-lower bearing bushing. DETAILED DESCRIPTION

[0032] The present invention is described below in conjunction with specific implementation methods.

[0033] Embodiment 1, as Figures 1 to 4 As shown, a car seat folding drive motor module includes a drive motor 1 and a reduction box assembly 2. The reduction box assembly 2 includes a box body 31. The box body 31 is provided with a circular receiving cavity 311 opening upward. The upper end of the box body 31 is fastened with a box cover 32 at the upper end opening position of the circular receiving cavity 311; the outer shell of the drive motor 1 is fastened to the box body 31, and the power output shaft of the drive motor 1 is connected with a drive worm 4 extending horizontally into the circular receiving cavity 311.

[0034] Among them, Figures 2 to 4 As shown, the circular receiving cavity 311 is embedded with a first planet carrier 51, a driving worm gear 61, an inner gear ring 7, and a power output member 8. The driving worm gear 61 is meshed with the driving worm 4. The first planet carrier 51 is pivotally connected to a plurality of first planetary gears 53 distributed in a ring array through a first planetary pin 52.

[0035] Further, such as Figures 2 to 4 As shown, a coaxially arranged first central gear 62 is provided on the upper surface of the driving worm gear 61 . The first central gear 62 and the driving worm gear 61 are an integral structure. All first planetary gears 53 surround the periphery of the first central gear 62 , and each first planetary gear 53 is respectively meshed with the first central gear 62 .

[0036] Furthermore, if Figures 2 to 4 As shown, a coaxially arranged second central gear 54 is provided on the upper surface of the first planet carrier 51 , and the second central gear 54 and the first planet carrier 51 are an integral structure.

[0037] In addition, if Figures 1 to 4As shown, the power output member 8 includes a vertically arranged hollow shaft 81, the core of the hollow shaft 81 is provided with an axially penetrating core through hole 811, the upper end of the hollow shaft 81 is provided with a second planetary carrier 82 coaxially arranged with the hollow shaft 81, the second planetary carrier 82 and the hollow shaft 81 are an integral structure, the second planetary carrier 82 is pivotally connected to a plurality of second planetary gears 84 distributed in a ring array through second planetary pins 83, all the second planetary gears 84 surround the periphery of the second center gear 54, and each second planetary gear 84 is respectively meshed with the second center gear 54.

[0038] In addition, the first planetary carrier 51 is located on the lower end side of the second planetary carrier 82, and the first planetary carrier 51 and the second planetary carrier 82 are respectively located on the inner side of the inner ring gear 7, each first planetary gear 53 and each second planetary gear 84 are respectively meshed with the inner ring gear 7, and the first planetary carrier 51 and the driving worm gear 61 are respectively rotatably mounted on the outer periphery of the hollow shaft 81.

[0039] When the car seat folding drive motor module of the first embodiment of the present invention is working, the drive motor 1 drives the drive worm wheel 61 to rotate through the drive worm 4. Since the first center gear 62 and the drive worm wheel 61 are an integrated structure, the rotating drive worm wheel 61 drives the first planetary gears 53 to rotate through the first center gear 62. During this process, the first planetary carrier 51 rotates; the rotating first planetary carrier 51 drives the second planetary gears 84 to rotate through the second center gear 54, thereby rotating the second planetary carrier 82 and the hollow shaft 81 to realize the power output of the power output member 8.

[0040] The hollow shaft 81 and the second planetary carrier 82 of the first embodiment are an integral structure, the driving worm gear 61 and the first center gear 62 of the first embodiment are an integral structure, and the first planetary carrier 51 and the second center gear 54 of the first embodiment are an integral structure. The above-mentioned integrated structural design can effectively increase the overall strength of the product, thereby increasing the reliability of the product.

[0041] It should be emphasized that the reduction gearbox assembly 2 of the first embodiment is realized by a two-stage planetary reduction structure, which can effectively improve the output torque, thereby enabling the automobile seat folding drive motor module of the first embodiment to be effectively applicable to the use requirements of different automobile seats flipping and folding.

[0042] It should be explained that the hollow shaft 81 of the first embodiment adopts a hollow structure design. The hollow shaft 81 with this structural design can effectively improve the heat dissipation capacity of the product, thereby improving the reliability of the product.

[0043] In summary, it can be seen that, through the above structural design, the automobile seat folding drive motor module of the first embodiment has the advantages of novel structural design, large output torque and good reliability.

[0044] Embodiment 2, as Figures 2 to 4 As shown, the difference between the second embodiment and the first embodiment is that the box body 31 is provided with a lower through hole 312 which penetrates vertically corresponding to the hollow shaft 81 , and the box cover 32 is provided with an upper through hole 321 which penetrates vertically corresponding to the hollow shaft 81 .

[0045] The upper end of the hollow shaft 81 is connected to the box cover 32 via an upper end bearing bushing 91 , and the lower end of the hollow shaft 81 is connected to the box body 31 via a lower end bearing bushing 92 .

[0046] Embodiment three, as Figures 1 to 5 As shown, the difference between the third embodiment and the first embodiment is that: the upper end portion of the inner gear ring 7 is provided with at least two circumferentially spaced positioning protrusions 71 that protrude outward respectively, and the upper end edge portion of the box body 31 is provided with positioning grooves 313 corresponding to each positioning protrusion 71, and each positioning protrusion 71 of the inner gear ring 7 is respectively embedded in the corresponding positioning groove 313.

[0047] The inner gear ring 7 is vertically limited and fixed between the box body 31 and the box cover 32 .

[0048] The inner gear ring 7 of the third embodiment is a structure independent of the box body 31. When installing the inner gear ring 7 on the box body 31, the inner gear ring 7 is inserted into the circular receiving cavity 311 of the box body 31, and the positioning protrusions 71 of the inner gear ring 7 are respectively embedded in the corresponding positioning grooves 313 to realize the anti-rotation connection between the inner gear ring 7 and the box body 31, and the positioning and fastening of the inner gear ring 7 is realized by the vertical limiting of the box body 31 and the box cover 32.

[0049] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The content of this specification should not be understood as limiting the present invention.

Claims

1. A car seat folding drive motor module, comprising a drive motor (1) and a reduction box assembly (2), the reduction box assembly (2) comprising a box body (31), the box body (31) being provided with a circular receiving cavity (311) opening upward, the upper end of the box body (31) being fastened with a box cover (32) at the upper opening position of the circular receiving cavity (311); the outer shell of the drive motor (1) being fastened with the box body (31), and the power output shaft of the drive motor (1) being connected with a drive worm (4) extending horizontally into the circular receiving cavity (311); A first planet carrier (51), a driving worm gear (61), an inner gear ring (7), and a power output member (8) are embedded in the circular receiving cavity (311); the driving worm gear (61) is meshed with the driving worm (4); and the first planet carrier (51) is pivotally connected to a plurality of first planet gears (53) distributed in an annular array via first planet pins (52); Features: A first central gear (62) arranged coaxially is provided on the upper surface of the driving worm gear (61); the first central gear (62) and the driving worm gear (61) are an integral structure; all first planetary gears (53) surround the periphery of the first central gear (62), and each first planetary gear (53) is respectively meshed with the first central gear (62); A coaxially arranged second central gear (54) is provided on the upper surface of the first planet carrier (51); the second central gear (54) and the first planet carrier (51) are an integral structure; The power output member (8) comprises a vertically arranged hollow shaft (81), the core of the hollow shaft (81) is provided with an axially penetrating core through hole (811), the upper end of the hollow shaft (81) is provided with a second planet carrier (82) coaxially arranged with the hollow shaft (81), the second planet carrier (82) and the hollow shaft (81) are an integral structure, the second planet carrier (82) is pivotally connected to a plurality of second planetary gears (84) distributed in an annular array through second planetary pins (83), all the second planetary gears (84) surround the periphery of the second central gear (54), and each second planetary gear (84) is respectively meshed with the second central gear (54); The first planet carrier (51) is located at the lower end side of the second planet carrier (82), and the first planet carrier (51) and the second planet carrier (82) are respectively located on the inner side of the inner gear ring (7), each first planetary gear (53) and each second planetary gear (84) are respectively meshed with the inner gear ring (7), and the first planet carrier (51) and the driving worm gear (61) are respectively rotatably mounted on the outer periphery of the hollow shaft (81).

2. The automobile seat folding drive motor module according to claim 1, characterized in that: The box body (31) is provided with a lower through hole (312) extending vertically through the hollow shaft (81), and the box cover (32) is provided with an upper through hole (321) extending vertically through the hollow shaft (81). The upper end of the hollow shaft (81) is connected to the box cover (32) via an upper end bearing bushing (91), and the lower end of the hollow shaft (81) is connected to the box body (31) via a lower end bearing bushing (92).

3. The automobile seat folding drive motor module according to claim 1, characterized in that: The upper end of the inner gear ring (7) is provided with at least two circumferentially spaced positioning protrusions (71) that protrude outwards respectively, and the upper edge of the box body (31) is provided with positioning grooves (313) corresponding to the positioning protrusions (71), and the positioning protrusions (71) of the inner gear ring (7) are respectively embedded in the corresponding positioning grooves (313); The inner gear ring (7) is fixed between the box body (31) and the box cover (32) in a vertical limiting manner.

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