A variable diameter driving mechanism and seat driving assembly

Abstract

The present invention relates to the technical field of vehicle seats, and in particular to a variable diameter drive mechanism and a seat drive assembly, comprising a first rotating disk, a second rotating disk, a first guide member and a second guide member, wherein the first rotating disk is provided with a first guide groove, the first guide groove comprises a first variable diameter groove section and a first arcuate groove section with the rotation center of the first rotating disk as the center of the circle; the second rotating disk is provided with a second guide groove, the second guide groove comprises a second variable diameter groove section and a second arcuate groove section with the rotation center of the second rotating disk as the center of the circle; the first guide member moves along the trajectory of the first guide groove; the second guide member moves along the trajectory of the second guide groove; wherein, when the first guide member is located at the first variable diameter groove section, the second guide member is located at the second arcuate groove section; when the first guide member is located at the first arcuate groove section, the second guide member is located at the second variable diameter groove section. The variable diameter groove section and the arcuate groove section of the present invention realize the control of the movement rhythm of the two mechanisms, and the structure is simple.

Description

Technical Field

[0001] The invention relates to the technical field of vehicle seats, and in particular to a variable diameter driving mechanism and a seat driving component. Background Art

[0002] In the prior art, vehicle electric seats can slide and rotate, as disclosed in a rotating device, a driving mechanism and a seat driving assembly with publication number CN117104091A, which realize the rhythmic coordination of sliding and rotating of the electric seat through a motor, a connecting rod assembly and a travel track. However, this structure requires two sets of connecting rod assemblies, a rotating connecting rod assembly and a sliding connecting rod assembly, which is relatively complex and costly. Summary of the invention

[0003] In order to solve the problem in the prior art that two sets of connecting rod assemblies are required to realize rotation and sliding of an electric seat, which is complex in structure and high in cost, the present invention provides a variable diameter driving mechanism and a seat driving assembly with a simple structure.

[0004] The technical solution adopted by the present invention to solve its technical problem is:

[0005] A variable diameter driving mechanism, comprising:

[0006] A first rotating disk surface, wherein a first guide groove is provided on the first rotating disk surface, wherein the first guide groove comprises a first diameter-reducing groove section and a first arc-shaped groove section, and the first arc-shaped groove section takes the rotation center of the first rotating disk surface as a circle center;

[0007] A second rotating disk, wherein a second guide groove is provided on the second rotating disk, and the second guide groove includes a second diameter-changing groove section and a second arc-shaped groove section, and the second arc-shaped groove section takes the rotation center of the second rotating disk as the center of the circle;

[0008] A first guide member, wherein the first guide member moves along a track of the first guide groove;

[0009] A second guide member, wherein the second guide member moves along a track of the second guide groove;

[0010] in,

[0011] When the first guide member is located at the first diameter-changing groove section, the second guide member is located at the second arc-shaped groove section; when the first guide member is located at the first arc-shaped groove section, the second guide member is located at the second diameter-changing groove section.

[0012] Furthermore, the first rotating disk surface and the second rotating disk surface are fixedly connected to form a rotating member, the first rotating disk surface is arranged on a first side of the rotating member, and the second rotating disk surface is arranged on a second side of the rotating member.

[0013] Furthermore, the first guide member is a first rolling member, and the second guide member is a second rolling member.

[0014] A seat drive assembly, comprising the above-mentioned variable diameter drive mechanism, further comprising:

[0015] A base, wherein the base is fixed on the vehicle body;

[0016] A sliding bracket, wherein the sliding bracket is slidably arranged on the base;

[0017] A seat frame, wherein the seat frame is rotatably arranged on a sliding bracket;

[0018] The rotating member is rotatably arranged on the sliding bracket;

[0019] A first transmission mechanism, wherein the first transmission mechanism is connected between the first guide member and the seat frame;

[0020] The second transmission mechanism is connected between the second guide member and the base.

[0021] Furthermore, the first transmission mechanism includes a transmission plate rotatably connected to the sliding bracket, the first guide member is rotatably connected to the transmission plate, and the rotation centers of the first guide member and the transmission plate are eccentrically arranged, and the transmission plate is transmission-connected to the seat frame.

[0022] Furthermore, an angular velocity amplification mechanism is provided between the transmission plate and the seat frame.

[0023] Furthermore, the angular velocity amplification mechanism includes a gear mechanism, the gear mechanism includes a first gear fixed or integrally arranged on the transmission plate and a second gear fixed or integrally arranged on the central axis of the seat frame, the first gear and the second gear are meshed. The angular velocity is increased by meshing gears with different numbers of teeth.

[0024] Furthermore, the second transmission mechanism includes a connecting rod, the first end of which is rotatably disposed on a sliding bracket, and the connecting rod is rotatably connected to the second guide member, the second end of the connecting rod is connected to a sliding member, the sliding member is slidably connected to the base, and the sliding member is connected to the sliding bracket.

[0025] Furthermore, a driving motor is installed on the sliding bracket, a driving gear is provided at the output end of the driving motor, teeth are provided at the edge of the rotating part, a third gear is provided for rotating the central axis of the seat frame, and the third gear is meshed between the teeth of the rotating part and the driving gear.

[0026] Furthermore, the rotating member is provided with a weight-reducing groove, which can reduce the overall weight of the rotating member and reduce the driving load. Of course, the weight-reducing groove can also be designed as a balancing groove that makes the center of gravity of the rotating member located at its rotation center, thereby preventing shaking or vibration during the rotation process and improving the movement stability.

[0027] Beneficial effects: (1) The present invention utilizes the staggered arrangement of the variable diameter groove sections and the arc groove sections on the two rotating disks to achieve the control of the movement rhythm of at least two mechanisms. The structure is simple, the movement control is achieved by the mechanical structure, and the stability is good. (2) The two rotating disks are fixedly connected by two disks and are arranged opposite to each other. The spatial layout is reasonable. The same driving power is used to realize the rotation of the two rotating disks. The structure is integrated and the cost is saved. (3) The variable diameter drive mechanism of the present invention is applied to the seat drive assembly to realize the staggered sliding movement and rotation movement of the seat. It is suitable for the situation where the gap between adjacent seats is small and it is inconvenient to rotate. The seat can be translated to the set position and then rotated to avoid the problem of interference with the adjacent seat when the seat rotates. (4) The number and position of the first variable diameter groove section can be adaptively set according to the rotation direction of the seat, and the flexibility is high. (5) The angular velocity amplification mechanism can realize the rapid rotation of the seat, thereby reducing the stroke of the first variable diameter groove section of the first guide groove, thereby increasing the layout space of the second variable diameter groove section of the second guide groove, which is convenient for increasing the number of angular rotation directions of the seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0029] Figure 1 It is a structural schematic diagram of the first rotating disk of the present invention;

[0030] Figure 2 It is a structural schematic diagram of the second rotating disk of the present invention;

[0031] Figure 3 It is a structural schematic diagram of the rotating member of the present invention;

[0032] Figure 4 is a schematic diagram of the positional relationship between the first guide groove and the second guide groove;

[0033] Figure 5 is a schematic diagram of the overall structure of the seat drive assembly of the present invention;

[0034] Figure 6 A top view of a seat drive assembly of the present invention;

[0035] Figure 7 for Figure 6 Sectional view along AA;

[0036] Figure 8is a structural schematic diagram of a first transmission mechanism;

[0037] Fig. 9 It is a structural schematic diagram of the second transmission mechanism.

[0038] 100. Rotating member, 101. Weight reduction groove, 1. First rotating disk, 11. First guide groove, 111. First diameter-reducing groove section, 112. First arcuate groove section, 2. Second rotating disk, 21. Second guide groove, 211. Second diameter-reducing groove section, 212. Second arcuate groove section, 3. First guide member, 4. Second guide member, 5. Base, 6. Sliding bracket, 7. Seat frame, 71. Center axis, 8. Transmission disk, 9. First gear, 10. Second gear, 12. Driving motor, 121. Driving gear, 13. Third gear, 14. Connecting rod. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0041] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0042] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0043] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0044] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0045] like Figures 1 to 4The present invention provides a variable diameter driving mechanism, comprising a first rotating disk surface 1, a second rotating disk surface 2, a first guide member 3 and a second guide member 4, wherein a first guide groove 11 is provided on the first rotating disk surface 1, and the first guide groove 11 comprises a first variable diameter groove section 111 and a first arcuate groove section 112, and the first arcuate groove section 112 takes the rotation center of the first rotating disk surface 1 as the center of the circle; a second guide groove 21 is provided on the second rotating disk surface 2, and the second guide groove 21 comprises a second variable diameter groove section 211 and a second arcuate groove section 212, and the second arcuate groove section 212 takes the rotation center of the second rotating disk surface 2 as the center of the circle; the first guide member 3 moves along the trajectory of the first guide groove 11; the second guide member 4 moves along the trajectory of the second guide groove 21; wherein, when the first guide member 3 is located at the first variable diameter groove section 111, the second guide member 4 is located at the second arcuate groove section 212; when the first guide member 3 is located at the first arcuate groove section 112, the second guide member 4 is located at the second variable diameter groove section 211.

[0046] The first rotating disk 1 and the second rotating disk 2 are fixedly connected to form a rotating member 100 . The first rotating disk 1 is arranged on a first side of the rotating member 100 , and the second rotating disk 2 is arranged on a second side of the rotating member 100 . A weight reduction groove 101 is also arranged on the rotating member 100 .

[0047] The first guide member 3 is a first rolling member, and the second guide member 4 is a second rolling member. The first rolling member may be selected from but not limited to a first bearing, and the second rolling member may be selected from but not limited to a second bearing.

[0048] like Figures 5 to 9 The present invention also provides a seat drive assembly, including the above-mentioned variable diameter drive mechanism, and also includes a base 5, a sliding bracket 6, a seat frame 7, a first transmission mechanism and a second transmission mechanism, the base 5 is fixed on the vehicle body, the sliding bracket 6 is slidably set on the base 5; the seat frame 7 is rotatably set on the sliding bracket 6, and the seat is fixed on the seat frame 7; the rotating member 100 is rotatably set on the sliding bracket 6; the first transmission mechanism is connected between the first guide member 3 and the seat frame 7; the second transmission mechanism is connected between the second guide member 4 and the base 5.

[0049] The first transmission mechanism includes a transmission plate 8 rotatably connected to the sliding bracket 6 , the first guide member 3 is rotatably connected to the transmission plate 8 , and the rotation centers of the first guide member 3 and the transmission plate 8 are eccentrically arranged, and the transmission plate 8 is transmission-connected to the seat frame 7 .

[0050] An angular velocity amplification mechanism is provided between the transmission disc 8 and the seat frame 7. The angular velocity amplification mechanism can adopt the lever principle to change the rotation speed by utilizing the difference in the force arm, or adopt an electromagnetic drive mode to control the angular velocity of the rotating body by adjusting the intensity and direction of the electromagnetic field. In the present invention, as a preferred embodiment, the angular velocity amplification mechanism includes a gear mechanism, which includes a first gear 9 fixed or integrally provided on the transmission disc 8 and a second gear 10 fixed or integrally provided on the central axis 71 of the seat frame 7, and the first gear 9 and the second gear 10 are meshed.

[0051] The second transmission mechanism includes a connecting rod 14, the first end of the connecting rod 14 is rotatably arranged on the sliding bracket 6, and the connecting rod 14 is rotatably connected to the second guide member 4, the second end of the connecting rod 14 is connected to a sliding member, the sliding member is slidably connected to the base 5, and the sliding member is fixedly connected or transmission-connected to the sliding bracket 6. As an embodiment, a guide rail is arranged on the base 5, the sliding member can be a slider on the guide rail, a sliding groove is opened on the connecting rod 14, a third bearing is arranged in the sliding groove, and the third bearing is rotatably arranged on the slider, and the swing of the connecting rod 14 can drive the sliding rail to slide, thereby driving the sliding bracket 6 to slide along the base 5. Other forms of transmission mechanisms such as gear racks or cylinders can also be used, as long as the connecting rod 14 can drive the sliding bracket 6 to slide relative to the base 5.

[0052] A driving motor 12 is installed on the sliding bracket 6, and a driving gear 121 is provided at the output end of the driving motor 12. Teeth are provided on the edge of the rotating member 100. A third gear 13 is rotatably provided on the central axis 71 of the seat frame 7, and the third gear 13 is meshed between the teeth of the rotating member 100 and the driving gear 121.

[0053] Working principle: when the first guide member 3 is located at the first variable diameter groove section 111, the second guide member 4 is located at the second arc-shaped groove section 212; when the first guide member 3 is located at the first arc-shaped groove section 112, the second guide member 4 is located at the second variable diameter groove section 211, that is, when the sliding bracket 6 slides, the seat frame 7 slides with the sliding bracket 6 and does not rotate itself; when the sliding bracket 6 reaches the sliding stroke, the seat frame 7 rotates relative to the sliding bracket 6, thereby realizing the movement coordination of the seat sliding and rotating. The number and position of the first variable diameter groove section 111 can be set according to the requirements of the seat orientation change.

[0054] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A seat drive assembly, characterized in that: The variable diameter driving mechanism comprises a first rotating disk (1), a second rotating disk (2), a first guide member (3) and a second guide member (4); the first rotating disk (1) is provided with a first guide groove (11), the first guide groove (11) comprises a first variable diameter groove section (111) and a first arc-shaped groove section (112), the first arc-shaped groove section (112) having the rotation center of the first rotating disk (1) as the center of the circle; the second rotating disk (2) is provided with a second guide groove (21), the second guide groove (21) comprises a second variable diameter groove section (211) and a second arc-shaped groove section (212), the second arc-shaped groove section (212) having the rotation center of the second rotating disk (2) as the center of the circle; the first guide member (3) moves along the trajectory of the first guide groove (11); the second guide member (4) moves along the trajectory of the second guide groove (21); in, When the first guide member (3) is located in the first diameter-changing groove section (111), the second guide member (4) is located in the second arc-shaped groove section (212); when the first guide member (3) is located in the first arc-shaped groove section (112), the second guide member (4) is located in the second diameter-changing groove section (211); the first rotating disk surface (1) and the second rotating disk surface (2) are fixedly connected to form a rotating member (100), the first rotating disk surface (1) is arranged on a first side of the rotating member (100), and the second rotating disk surface (2) is arranged on a second side of the rotating member (100); The seat drive assembly also includes: A base (5), wherein the base (5) is fixed on the vehicle body; A sliding bracket (6), wherein the sliding bracket (6) is slidably arranged on the base (5); A seat frame (7), wherein the seat frame (7) is rotatably arranged on the sliding bracket (6); The rotating member (100) is rotatably disposed on the sliding bracket (6); A first transmission mechanism, wherein the first transmission mechanism is connected between the first guide member (3) and the seat frame (7); A second transmission mechanism, the second transmission mechanism being connected between the second guide member (4) and the base (5); The first transmission mechanism comprises a transmission plate (8) rotatably connected to the sliding bracket (6), the first guide member (3) is rotatably connected to the transmission plate (8), and the rotation centers of the first guide member (3) and the transmission plate (8) are eccentrically arranged, and the transmission plate (8) is transmission-connected to the seat frame (7); An angular velocity amplification mechanism is provided between the transmission plate (8) and the seat frame (7); the angular velocity amplification mechanism comprises a gear mechanism, the gear mechanism comprises a first gear (9) fixed or integrally arranged on the transmission plate (8) and a second gear (10) fixed or integrally arranged on the central axis (71) of the seat frame (7), the first gear (9) and the second gear (10) being meshed.

2. A seat drive assembly according to claim 1, characterized in that: The first guide member (3) is a first rolling member, and the second guide member (4) is a second rolling member.

3. A seat drive assembly according to claim 1, characterized in that: The second transmission mechanism comprises a connecting rod (14), a first end of the connecting rod (14) being rotatably disposed on a sliding bracket (6), and the connecting rod (14) being rotatably connected to a second guide member (4), a second end of the connecting rod (14) being connected to a sliding member, the sliding member being slidably connected to a base (5), and the sliding member being connected to the sliding bracket (6).

4. A seat drive assembly according to claim 1, characterized in that: A driving motor (12) is mounted on the sliding bracket (6), a driving gear (121) is disposed at the output end of the driving motor (12), teeth are disposed at the edge of the rotating member (100), a third gear (13) is rotatably disposed on the central axis (71) of the seat frame (7), and the third gear (13) is meshed between the teeth of the rotating member (100) and the driving gear (121).

5. A seat drive assembly according to claim 1, characterized in that: The rotating member (100) is also provided with a weight-reducing groove (101).

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