Coaxial dual-output driving mechanism for automobile seat and automobile seat pedal

Abstract

The utility model discloses a coaxial dual output drive mechanism and car seat pedal for car seat, drive mechanism includes motor main part, motor main part axial both ends are connected with transmission shaft through planetary gear train speed reduction, motor main part rotor both ends are equipped with output shaft, output shaft tail end is equipped with angle adjuster, motor main part rotor both ends are equipped with the motor main part rotor both ends are equipped with the motor main part rotor both ends are equipped with the motor main part rotor both ends are equipped with the motor main part rotor both ends. The motor body, the planetary gear train at two ends of the motor body and the transmission shaft are arranged in the same axial direction. The automobile seat pedal comprises a seat body and a pedal plate, the seat body is provided with a seat supporting assembly, a leg support assembly is installed on the front portion of the seat supporting assembly, and the driving mechanism is arranged at the front end of the leg support assembly. A first connecting rod and a second connecting rod are symmetrically arranged at the two ends of the pedal, one end of the first connecting rod is hinged to the pedal, and the other end of the first connecting rod is connected with the angle adjuster. The driving mechanism has the advantages of being compact in structure, large in reduction ratio, small in occupied space of the seat pedal and convenient to adjust.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile seat, specifically relates to a coaxial double output drive mechanism for automobile seat and automobile seat footrest. BACKGROUND

[0002] In the automobile seat structure, a large number of rotary assembly structures are involved, for example: between backrest and seat frame, between leg support and seat frame, between headrest and backrest, etc.In the prior art, these rotary mounting structures are mainly controlled in rotation by adopting the mode of electric direct drive angle adjuster, arc-shaped toothed plate transmission or four-bar linkage transmission, these transmission mechanisms cannot provide larger reduction ratio, resulting in large motor driving load, and there are defects such as poor durability and low transmission precision.And the automobile seat also has higher requirements for integration, and the available layout space is limited, so additional speed reducer or replacement of high-power driver is also not the best optimization direction.

[0003] Therefore, it is urgent to develop a rotary drive mechanism with high transmission precision and good compactness. UTILITY MODEL CONTENTS

[0004] Therefore, the utility model provides a coaxial double output drive mechanism for automobile seat to meet the technical needs proposed in the background art.In order to achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0005] A coaxial double output drive mechanism for automobile seat, comprising a motor body, the motor body is connected with a transmission shaft at each axial end through a speed reducer assembly, the motor body comprises a stator and a rotor rotatingly arranged in the stator, the rotor is provided with an output shaft at both ends, and the two speed reducer assemblies are both planetary gear trains, which are power-connected between the corresponding output shaft and transmission shaft in a speed reduction transmission mode, and the motor body and the planetary gear trains and transmission shafts at both ends thereof are arranged on the same axial line.

[0006] By adopting the above structure, the drive mechanism has two transmission shafts, the two transmission shafts are connected at both ends of the motor body through the planetary gear trains, so that the drive mechanism as a whole is in the form of a columnar body, and the structure is compact.The output and transmission of the rotary drive part are realized through the planetary gear trains, the reduction ratio is large, the load of the motor driving is small, and the transmission is more stable.

[0007] As a preferred embodiment: the planetary gear train comprises a first sun gear, a first planetary gear, a first outer gear ring and a first planet carrier, wherein the first sun gear is coaxially fixed to the output shaft, the first outer gear ring is fixedly installed relative to the stator of the motor body, and the first planet carrier is directly or indirectly transmission-connected with the transmission shaft.By adopting the above structure, the structure is compact, the reduction effect is good, and the output shaft and the transmission shaft can be coaxial.

[0008] As preferred: the planetary gear train further comprises a second sun gear, a second planetary gear, a second outer gear ring and a second planet carrier, wherein the second sun gear is fixedly connected with the first planet carrier, the second outer gear ring is fixedly installed relative to the stator of the motor body, and the second planet carrier is connected with the transmission shaft.

[0009] As preferred: the motor body further comprises a cylindrical housing, and the stator of the motor body, the first outer gear ring and the second outer gear ring of the planetary gear train are fixedly arranged on the inner wall of the housing.

[0010] As preferred: the transmission shaft is provided with an angle adjuster at the end away from the speed reduction assembly.

[0011] The utility model also provides a car seat footboard, and its purpose lies in solving the problem of large occupied space and compressed leg movement space of the existing car seat footboard.

[0012] To achieve the above object, the utility model technical scheme is as follows:

[0013] A car seat footboard, comprising a seat body, wherein the seat body is provided with a seat support assembly, a leg support assembly is installed at the front part of the seat support assembly, a coaxial double-output driving mechanism for the car seat is arranged at the front end of the leg support assembly, and the coaxial double-output driving mechanism is arranged along the width direction of the leg support assembly.

[0014] The footboard is further provided with a first connecting rod, a second connecting rod and an angle adjuster.

[0015] The coaxial double-output driving mechanism is used to drive the footboard, and the driving structure occupies a small space, thereby improving the leg movement space.

[0016] As preferred: the leg support assembly is provided with a protective cover, the protective cover is provided with an arc-shaped mounting cavity extending along the width direction of the leg support assembly, and the motor body, the planetary gear train and the transmission shaft are arranged in the arc-shaped mounting cavity.

[0017] As preferred: the leg rest assembly comprises a base which is reversely mounted at the front end of the seat support assembly, a support body is reversibly mounted on the base through a linkage assembly, a reverse driving mechanism is arranged between the seat support assembly and the leg rest assembly, the reverse driving mechanism is used to drive the base to reversely expand forward relative to the seat support assembly, and the linkage assembly can force the support body to slide forward relative to the base during the reverse expansion of the base. With the above structure, the linkage of the leg rest assembly can be realized by driving the base to reverse, and the adjustment is convenient.

[0018] As preferred: the support body is slidably connected with an extension part, the leg rest assembly is provided with an extension driving mechanism which is used to drive the extension part to slide forward and backward relative to the support body, and the first linkage and the second linkage are connected at the front end side of the extension part. With the above structure, the foot pedal is conveniently used.

[0019] Compared with the prior art, the utility model has the advantages that:

[0020] 1. The coaxial double-output driving mechanism has two transmission shafts, the two transmission shafts are connected at two ends of a double-output motor body through a planetary gear train, the driving mechanism as a whole is a columnar body, the structure is compact, and when the driving mechanism is used as a driving device for rotating output of an automobile seat, the structure compactness of the seat at the corresponding position can be significantly optimized. Meanwhile, through the planetary gear train deceleration transmission, a large deceleration ratio can be realized, the load of the motor driving is small, and the transmission is more stable.

[0021] 2. In the automobile seat leg rest, the foot pedal is driven through the coaxial double-output driving mechanism, movement is stable, the occupied space is small, the leg movement space in the automobile interior is avoided to be compressed, and the comfort of riding is improved.

[0022] 3. In the automobile seat leg rest, the leg rest and the foot pedal are adjusted layer by layer through the reverse driving mechanism, the linkage assembly and the extension driving mechanism, and when not used, the leg rest and the foot pedal can be completely folded, the normal riding demand is not affected, when used, not only the leg rest can have sufficient elongation, the leg rest support comfort is improved, but also the leg rest can be quickly and stably adjusted. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a structural schematic view of the foot pedal of the automobile seat;

[0024] Figure 2 It is a schematic view of the seat foot pedal in the folded state;

[0025] Figure 3 It is a structural schematic view of the inside of the foot pedal of the automobile seat;

[0026] Figure 4 It is a schematic view of the seat foot pedal in the folded state;

[0027] Figure 5It is a side view of the automobile seat pedal;

[0028] Figure 6 It is a schematic diagram of the external structure of the coaxial double-output driving mechanism;

[0029] Figure 7 It is a schematic diagram of the internal structure of the coaxial double-output driving mechanism;

[0030] Figure 8 It is a schematic diagram of the linkage assembly 13.

[0031] Figure 9 It is a schematic diagram of the telescopic driving mechanism 14. DETAILED DESCRIPTION

[0032] The utility model will be further described below in combination with the embodiments and the drawings.

[0033] As shown in Figure 1 , an automobile seat pedal comprises a seat body, the seat body is provided with a seat support assembly 7, a leg support assembly 8 is mounted on the front part of the seat support assembly 7, a protective cover 12 is arranged on the front part of the leg support assembly 8, the protective cover 12 is provided with an arc-shaped mounting cavity 12a extending along the width direction of the leg support assembly 8, and a coaxial double-output driving mechanism for an automobile seat is mounted in the mounting cavity 12a. Figure 2 As shown in , the automobile seat pedal further comprises a pedal plate 10, the pedal plate 10 is symmetrically provided with a first connecting rod 9 at both ends, one end of the first connecting rod 9 is hingedly connected to the side part of the pedal plate 10, and the other end is connected to the output end of the driving mechanism, the pedal plate 10 is also symmetrically provided with a second connecting rod 11 at both ends, one end of the second connecting rod 11 is hingedly connected to the side part of the pedal plate 10, and the other end is connected to the side part of the leg support assembly 8, and the first connecting rod 9, the second connecting rod 11, the pedal plate 10 and the leg support assembly 8 constitute a four-connecting-rod mechanism.

[0034] Figure 6 and Figure 7 , a coaxial double-output driving mechanism for an automobile seat comprises a motor body 1, and transmission shafts 2 are connected to the motor body 1 at both axial ends through planetary gear trains 3. The motor body 1 comprises a stator 1b and a rotor 1a rotatably arranged in the stator 1b, output shafts 4 are arranged at both ends of the rotor 1a, and the motor body 1, the planetary gear trains 3 at both ends and the transmission shafts 2 are arranged on the same axial line. Angle adjusters 6 are arranged at the ends of the transmission shafts 2 away from the speed reduction assemblies, and the planetary gear trains 3 are power-connected between the corresponding output shafts 4 and the transmission shafts 2 in a speed reduction transmission mode.

[0035] As shown in Figure 7As shown, in this embodiment, the planetary gear system 3 is a double planetary gear set, which includes a first sun gear 3a1, a first planetary gear 3a2, a first outer gear ring 3a3 and a first planet carrier 3a4; and a second sun gear 3b1, a second planetary gear 3b2, a second outer gear ring 3b3 and a second planet carrier 3b4. Among them, the first sun gear 3a1 is coaxially fixed with the output shaft 4, the first planet carrier 3a4 is connected with the second sun gear 3b1, and the second planet carrier 3b4 is connected with the transmission shaft 2. The drive mechanism further includes a cylindrical shell 5, and the stator 1b, the first outer gear ring 3a3 and the second outer gear ring 3b3 of the planetary gear system 3 are fixed on the inner wall of the shell 5. The drive mechanism is driven by the planetary gear system 3 to reduce the transmission, which can achieve a larger reduction ratio, the load of the motor drive is small, and the transmission is more stable. And the whole is a cylindrical body, the structure is compact, and can meet the case that the layout space of the automobile seat is limited.

[0036] As shown in Figure 3 and Figure 5 , the leg supporting assembly 8 includes a base 8a reversely mounted on the front end of the seat supporting assembly 7, and a supporting body 8b reversibly mounted on the base 8a through a linkage assembly 13. A reverse driving mechanism 15 is arranged below the seat supporting assembly 7, and is used to drive the base 8a to reversely expand forward relative to the seat supporting assembly 7.

[0037] As shown in Figure 8 , the linkage assembly 13 includes a first rod 13a, a second rod 13b, a third rod 13c, a fourth rod 13d and a synchronous reverse component 13e. The rear end of the base 8a is hinged to the seat supporting assembly 7, and the synchronous reverse component 13e is located above the base 8a and opposite to the front end of the base 8a, and is also hinged to the seat supporting assembly 7. The rear end of the first rod 13a is hinged to the rear end of the base 8a, and the front end is hinged to the rear end of the second rod 13b. The front end of the second rod 13b is hinged to the middle part of the third rod 13c, and the front end of the third rod 13c is hinged to the supporting body 8b. The rear end of the fourth rod 13d is hinged to the middle part of the first rod 13a, and the front end is hinged to the rear end of the third rod 13c. The middle part of the fourth rod 13d is also hinged to the synchronous reverse component 13e. During the process of the base 8a reversely expanding forward, the first rod 13a is driven to rotate, and the remaining rods are linked, so as to force the supporting body 8b to slide forward relative to the base 8a.

[0038] As shown in Figure 9As shown, the support body 8b is slidingly connected with the extension part 16 at the front end, the extension part 16 is fixed on both sides of the protective cover 12, the leg supporting assembly 8 is provided with the telescopic driving mechanism 14 for driving the extension part 16 to slide forward and backward relative to the support body 8b, the telescopic driving mechanism 14 comprises a driver 14a, a fifth link 14b, a sixth link 14c, a seventh link 14d and an eighth link 14e. The driver 14a is fixed on the support body 8b, the fifth link 14b is hingedly connected at the rear end of the support body 8b, the front end is hingedly connected with the rear end of the sixth link 14c, the front end of the sixth link 14c is hingedly connected in the middle of the seventh link 14d, the front end of the seventh link 14d is hingedly connected with the protective cover 12, the rear end is hingedly connected with the front end of the eighth link 14e, and the rear end of the eighth link 14e is hingedly connected in the middle of the fifth link 14b. The driver 14a is connected in the middle of the eighth link 14e, and drives the eighth link 14e in the forward and backward direction, so that the extension part 16 and the protective cover 12 slide forward and backward relative to the support body 8b.

[0039] As shown, Figure 4 In the normal state, the support body 8b is perpendicular to the seat support assembly 7, the angle adjuster 6 of the coaxial double-output driving mechanism controls the footrest 10 to avoid inside the support body 8b, which meets the normal seating requirements and does not occupy too much leg space. Figure 1 As shown, when the footrest and the leg supporting are used, the base 8a is first driven by the overturning driving mechanism 15 to overturn forward, at the same time, the linkage assembly 13 makes the support body 8b slide forward, the driver 14a installed on the support body 8b drives the extension part 16 to slide forward, and finally the coaxial double-output driving mechanism drives the first connecting rod 9 to rotate, so that the footrest 10 is unfolded outward, and the overall driving mechanism is a columnar body, which occupies less leg space.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present application, and those skilled in the art can make various similar expressions under the inspiration of the present application without violating the purpose and claims of the present application, and such changes fall within the protection scope of the present application.

Claims

1. A coaxial dual output drive mechanism for a car seat, characterized by: The motor body (1) is connected with a transmission shaft (2) through a reduction assembly at each axial end, the motor body (1) comprises a stator (1b) and a rotor (1a) rotatably arranged in the stator (1b), the rotor (1a) is provided with an output shaft (4) at each end, and the two reduction assemblies are both planetary gear trains (3) which are power-connected between the corresponding output shaft (4) and the transmission shaft (2) in a reduction transmission mode, and the motor body (1) and the planetary gear trains (3) and the transmission shaft (2) at both ends thereof are arranged on the same axis.

2. The on-axis dual output drive mechanism for an automotive seat of claim 1, wherein: The planetary gear train (3) comprises a first sun gear (3a1), a first planetary gear (3a2), a first outer gear ring (3a3) and a first planetary carrier (3a4), wherein the first sun gear (3a1) is coaxially fixed to the output shaft (4), the first outer gear ring (3a3) is fixedly installed relative to the stator (1b) of the motor body (1), and the first planetary carrier (3a4) is directly or indirectly transmission-connected with the transmission shaft (2).

3. The on-axis dual output drive mechanism for an automotive seat of claim 2, wherein: The planetary gear train (3) further comprises a second sun gear (3b1), a second planetary gear (3b2), a second outer gear ring (3b3) and a second planetary carrier (3b4), wherein the second sun gear (3b1) is fixed to the first planetary carrier (3a4), the second outer gear ring (3b3) is fixedly installed relative to the stator (1b) of the motor body (1), and the second planetary carrier (3b4) is connected with the transmission shaft (2).

4. The on-axis dual output drive mechanism for an automotive seat of claim 3, wherein: A cylindrical shell (5) is further included, and the stator (1b) of the motor body (1), the first outer gear ring (3a3) and the second outer gear ring (3b3) of the planetary gear train (3) are all fixed on the inner wall of the shell (5).

5. The on-axis dual output drive mechanism for an automotive seat of claim 1, wherein: An angle adjuster (6) is arranged at the end of the transmission shaft (2) away from the reduction assembly.

6. An automotive seat ottoman characterized by: The seat body is provided with a seat support assembly (7), a leg support assembly (8) is mounted at the front of the seat support assembly (7), and the coaxial double-output driving mechanism for the automobile seat according to claim 5 is arranged at the front end of the leg support assembly (8) in the width direction of the leg support assembly (8). A footboard (10) is further included, first connecting rods (9) are symmetrically arranged at both ends of the footboard (10), one end of each first connecting rod (9) is hingedly connected to the side of the footboard (10), and the other end is connected to the angle adjuster (6), second connecting rods (11) are symmetrically arranged at both ends of the footboard (10), one end of each second connecting rod (11) is hingedly connected to the side of the footboard (10), and the other end is connected to the side of the leg support assembly (8).

7. The automotive seat ottoman of claim 6, wherein: A protective cover (12) is arranged at the front of the leg support assembly (8), the protective cover (12) has an arc-shaped mounting cavity (12a) extending in the width direction of the leg support assembly (8), and the motor body (1), the planetary gear train (3) and the transmission shaft (2) are arranged in the arc-shaped mounting cavity (12a).

8. The automotive seat ottoman of claim 6, wherein: The leg rest assembly (8) comprises a base (8a) reversibly mounted at the front end of the seat support assembly (7), a support body (8b) is slidably mounted on the base (8a) through a linkage assembly (13), a turnover driving mechanism (15) is arranged between the seat support assembly (7) and the leg rest assembly (8), and the turnover driving mechanism (15) is used for driving the base (8a) to reversibly expand forward relative to the seat support assembly (7), and the linkage assembly (13) can force the support body (8b) to slide forward relative to the base (8a) during the reversible expansion of the base (8a) forward.

9. The automotive seat ottoman of claim 8, wherein: A spreading part (16) is slidably connected to the support body (8b), and a telescopic driving mechanism (14) for driving the spreading part (16) to slide forward and backward relative to the support body (8b) is arranged on the leg rest assembly (8); the first connecting rod (9) and the second connecting rod (11) are connected to the front end side of the spreading part (16).

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