Rotary supporting structure

Abstract

The utility model relates to a rotary supporting structure, which comprises an upper connecting plate, a lower connecting plate, a fixed disc, a movable disc, an inner ring friction piece and an outer ring friction piece, the upper connecting plate can rotate around a central shaft of a seat framework relative to the lower connecting plate, and the upper connecting plate is connected with the seat framework through a third fastener; the fixed disc and the movable disc are arranged between the upper connecting plate and the lower connecting plate, the fixed disc is connected with the lower connecting plate through a second fastener, and the movable disc is connected with the upper connecting plate through a first fastener; the outer ring friction piece is clamped between the upper connecting plate and the outer edge of the fixed disc, and the inner ring friction piece is clamped between the inner edge of the fixed disc and the outer edge of the movable disc. The two sets of friction pieces are arranged, pressing can be conducted on the two sides of the friction pieces, the clamping effect of the friction pieces is good, vibration and abnormal sound are reduced, the overall rigidity is enhanced, and meanwhile the requirement for good running smoothness is met.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile seat, especially relates to a rotary support structure. BACKGROUND

[0002] In order to realize the rotation of the whole seat around the central axis, to realize the welcome mode or face-to-face communication with the rear passenger, it is usually necessary to set a rotary support structure between the seat and the fixed structure (such as slide rail) below the seat, and the rotary support structure includes a fixed part and a movable part which can rotate relative to the fixed part, the fixed part is connected with the fixed structure, and the movable part is connected with the seat framework, and the rotation of the seat is realized by driving the movable part to rotate relative to the fixed part.

[0003] During the driving of the vehicle, the vibration between the movable part and the fixed part is prone to abnormal noise, in order to solve this problem, the existing method is usually to set a plastic friction piece between the two, in order to better fix and clamp the friction piece, a clamp is usually welded on the fixed part and the movable part respectively, and the two clamps are in a setting relationship, and the friction piece is clamped in the setting area, and the friction piece is used to reduce the abnormal noise of vibration.

[0004] The above-mentioned existing method has the following disadvantages: in order to clamp the friction piece, the friction piece needs to be installed after one clamp is welded and before the other clamp is welded, and then the other clamp is welded, but the contact surface of the friction piece will be affected by heat when the other clamp is welded, which causes the part to be prone to deformation and poor running smoothness; Moreover, the clamping effect of the friction piece is limited only on the outer side of the friction piece; In addition, the upper connecting plate matched with the friction piece has poor rigidity and is prone to deformation and abnormal noise. UTILITY MODEL CONTENTS

[0005] In order to solve the above problems, the utility model provides a rotary support structure, which is provided with two groups of friction pieces and can be pressed on both sides of the friction pieces, so that the clamping effect of the friction pieces is good, the abnormal noise of vibration is reduced, and the overall operation is more smooth.

[0006] The utility model realizes the following scheme: a rotary support structure is used to realize the horizontal rotation of the seat framework around the central axis, the rotary support structure includes a rotating pair assembly, the rotating pair assembly includes a lower connecting plate, an upper connecting plate which can rotate relative to the lower connecting plate around the central axis, a fixed disc and a movable disc arranged between the upper connecting plate and the lower connecting plate, an outer ring friction piece and an inner ring friction piece, wherein:

[0007] The movable disc is tightly connected with the upper connecting plate through a first fastener, the fixed disc is tightly connected with the lower connecting plate through a second fastener, and the upper connecting plate is tightly connected with the seat framework through a third fastener;

[0008] The outer ring friction member is clamped between the upper connecting plate and the outer edge of the fixed disc, and the inner ring friction member is clamped between the inner edge of the fixed disc and the outer edge of the movable disc.

[0009] The further utility model lies in that the rotary pair assembly further includes a fourth fastener, the upper connecting plate is fastened and connected with the seat framework through the third fastener and the fourth fastener, so as to enhance the rigidity of the rotary support structure.

[0010] The further utility model lies in that the upper connecting plate is formed with an inner side mounting surface for connecting the fourth fastener and an outer side mounting surface for connecting the third fastener on the inner and outer sides of the outer ring friction member respectively, and the height of the outer side mounting surface is higher than that of the inner side mounting surface, so as to clamp the outer ring friction member.

[0011] The further utility model lies in that the utility model further includes a control mechanism, the control mechanism is installed on the upper connecting plate and acts on the fixed disc, or is installed on the lower connecting plate and acts on the movable disc, so as to control the rotation of the upper connecting plate relative to the lower connecting plate.

[0012] The further utility model lies in that the control mechanism includes an electric locking fixed disc, an electric locking movable disc and a driving motor, one of the electric locking fixed disc and the electric locking movable disc is connected with the lower connecting plate, the other of the electric locking fixed disc and the electric locking movable disc is connected with the upper connecting plate or the movable disc through direct or indirect mode, the electric locking movable disc and the electric locking fixed disc can rotate relatively, and the driving motor drives or locks the relative rotation between the electric locking movable disc and the electric locking fixed disc.

[0013] The further utility model lies in that the control mechanism includes a manual locking mounting member and a manual locking bolt, the manual locking mounting member is installed on the upper connecting plate, and the manual locking bolt is movably arranged on the manual locking mounting member, so that the manual locking bolt can pass through the fixed disc, thereby limiting the rotation of the movable disc relative to the fixed disc.

[0014] The further utility model lies in that one of the outer ring friction member and the inner ring friction member is a friction strip, and the other of the outer ring friction member and the inner ring friction member is a ball assembly.

[0015] The further utility model lies in that the outer ring friction member and the inner ring friction member are both ball assemblies.

[0016] The further utility model lies in that the outer ring friction member and the inner ring friction member are both friction strips.

[0017] A further aspect of this invention is that the inner and outer edges of the fixed plate extend toward the upper connecting plate and are folded outwards and inwards respectively to form a first inner flange and a first outer flange; the outer edge of the moving plate extends toward the lower connecting plate and is folded outwards to form a second outer flange; the outer ring friction member is sandwiched between the upper connecting plate and the first outer flange of the fixed plate, and the inner ring friction member is sandwiched between the first inner flange of the fixed plate and the first outer flange of the moving plate.

[0018] A further aspect of this invention is that the friction strip has a plurality of protrusions spaced apart along the circumference, and the first outer flange and / or the first inner flange of the fixed plate corresponding to the friction strip are provided with a plurality of card holes for the corresponding plurality of protrusions to be inserted one-to-one.

[0019] A further aspect of this invention is that the friction strip has multiple extended ears spaced apart along the circumferential direction, and the outer edge of the first outer flange and / or the inner edge of the first inner flange of the fixed plate corresponding to the friction strip are provided with multiple notches for the corresponding multiple extended ears to be inserted one by one.

[0020] A further aspect of this invention is that the outer ring friction element and / or the inner ring friction element are continuous ring structures, or are non-continuous ring structures formed by multiple first arc segments and multiple second arc segments spaced apart, wherein the first arc segment has a first elastic coefficient, and the second arc segment has a second elastic coefficient that is lower than the first elastic coefficient.

[0021] In this invention, all components in contact with the friction element are fixed using fasteners, avoiding the thermal impact on the contact surface of the friction element caused by welding, thus improving smoother operation. Furthermore, the fasteners allow for tightening and pressing on both sides of the friction element, resulting in good clamping and reduced vibration and noise. Additionally, the coordinated design of the inner and outer ring friction elements further reduces vibration and noise. Attached Figure Description

[0022] Figure 1 A schematic diagram of the combined state of the rotary joint assembly in the first embodiment of this utility model is shown.

[0023] Figure 2 An exploded view of the rotary joint assembly in the first embodiment of this utility model is shown.

[0024] Figure 3 It shows Figure 1 Section A1-A1.

[0025] Figure 4 It shows Figure 3A magnified view of a portion of the image.

[0026] Figure 5 The second embodiment of the present invention shows the rotary joint assembly corresponding to Figure 4 A magnified view of the angle.

[0027] Figure 6 The rotating joint assembly in the third embodiment of this utility model is shown to correspond to Figure 4 A magnified view of the angle.

[0028] Figure 7 The fourth embodiment of the present invention shows the rotary joint assembly corresponding to Figure 4 A magnified view of the angle.

[0029] Figure 8 This diagram shows the assembly state of the rotary joint assembly and the seat frame of this utility model.

[0030] Figure 9 It shows Figure 8 A magnified view of a portion of the image at an angle of A4-A4.

[0031] Figure 10 The diagram shows an equivalent comparison of the forces acting on the rotating joint assembly before and after the addition of the fourth bolt.

[0032] Figure 11 A schematic diagram of the combined state of the rotary joint assembly and the electric locking mechanism of this utility model is shown.

[0033] Figure 12 The diagram shows the disassembled state of the rotary joint assembly and the electric locking mechanism of this utility model.

[0034] Figure 13 It shows Figure 11 Section A2-A2.

[0035] Figure 14 A schematic diagram of the combined state of the rotary joint assembly and the manual locking mechanism of this utility model is shown.

[0036] Figure 15 The diagram shows the disassembled state of the rotary joint assembly and the manual locking mechanism of this utility model.

[0037] Figure 16 It shows Figure 14 Section A3-A3.

[0038] Figure 17 A schematic diagram of the overall structure of the platen in the fourth embodiment of this utility model is shown.

[0039] Figure 18 It shows Figure 17 Enlarged diagram of point B in the middle.

[0040] Figure 19 A schematic diagram of the overall structure of the outer ring friction element in the fourth embodiment of this utility model is shown.

[0041] Figure 20 A schematic diagram of the overall structure of the inner ring friction element in the fourth embodiment of this utility model is shown.

[0042] Figure 21 A partially enlarged schematic diagram of the inner ring friction element in the fourth embodiment of this utility model is shown.

[0043] Figure 22 It shows Figure 7 Enlarged diagram of point E in the middle.

[0044] Figure 23 This diagram illustrates the engagement state of the inner ring groove and the extension ear in the fourth embodiment of the present invention.

[0045] Figure 24 It shows Figure 18 Enlarged diagram of point C in the middle.

[0046] Figure 25 It shows Figure 18 Enlarged diagram of point D in the middle.

[0047] Figure 26 A schematic diagram of the overall structure of the ball bearing assembly in this utility model is shown.

[0048] In the diagram: 1. Upper connecting plate; 1w. Outer mounting surface; 1n. Inner mounting surface; 2. Lower connecting plate; 3. Fixed plate; 3n. First inner flange; 3w. First outer flange; 31. Locking boss; 32. Snap hole; 33. Notch; 4. Moving plate; 4w. Second outer flange; 41. Moving plate cover plate connecting hole; 5. Outer ring friction element; 6. Inner ring friction element; 61. Protrusion; 62. Extension lug; 63. Cage; 64. Ball bearing; 71. Upper clamp; 72. Lower clamp; 81. First fastener; 81a. First screw; 81b. First nut; 82. Second fastener; 82a. Second screw; 82b. Second nut; 83. Third fastener; 83a. Third screw 83b, Third nut; 84, Fourth fastener; 84a, Fourth screw; 84b, Fourth nut; 85, Fifth fastener; 85a, Fifth screw; 85b, Fifth nut; 86, Sixth fastener; 86a, Sixth screw; 86b, Sixth nut; 87, Seventh fastener; 87a, Seventh screw; 87b, Seventh nut; 91, Top cover plate; 911, Cover plate moving disc connecting hole; 912, Cover plate locking connecting hole; 92, Electric locking fixed disc; 93, Electric locking moving disc; 94, Drive motor; 95, Manual locking mounting part; 96, Manual locking pin; 100, Rotary joint assembly; 200, Seat frame; 201, Frame mounting surface. Detailed Implementation

[0049] To address the shortcomings of existing rotary support structures, such as poor vibration and noise reduction and inconsistent overall smoothness of operation, this invention provides a rotary support structure with two sets of friction components. These components can be clamped together on both sides, resulting in effective clamping, reduced vibration and noise, and smoother overall operation. The following detailed description, in conjunction with the accompanying drawings, further illustrates this rotary support structure.

[0050] First embodiment, see reference Figures 1-4 and Figure 9As shown, a rotary support structure is used to enable a seat frame 200 to rotate horizontally about a central axis L. The rotary support structure includes a rotary joint assembly 100, which includes a lower connecting plate 2, a fixed plate 3, a moving plate 4, an outer ring friction element 5, and an inner ring friction element 6. It also includes a first fastener 81, a second fastener 82, and a third fastener 83. The upper connecting plate 1 is rotatable relative to the lower connecting plate 2 about the central axis L. The upper connecting plate 1 is fastened to the seat frame 200 via the third fastener 83. The lower connecting plate 2 is used to connect to a fixed structure below the seat frame 200. The fixed plate 3 and the movable plate 4 are both located between the upper connecting plate 1 and the lower connecting plate 2. The fixed plate 3 is fastened to the lower connecting plate 2 by the second fastener 82, and the movable plate 4 is fastened to the upper connecting plate 1 by the first fastener 81. The outer ring friction member 5 is sandwiched between the outer edge of the upper connecting plate 1 and the fixed plate 3, and the inner ring friction member 6 is sandwiched between the inner edge of the fixed plate 3 and the outer edge of the movable plate 4. Preferably, the inner and outer edges of the fixed plate 3 extend towards the upper connecting plate 1 and are folded outwards to form a first inner flange 3n and a first outer flange 3w, respectively. The outer edge of the movable plate 4 extends towards the lower connecting plate 2 and is folded outwards to form a second outer flange 4w. The outer ring friction member 5 is sandwiched between the upper connecting plate 1 and the first outer flange 3w, and the inner ring friction member 6 is sandwiched between the first inner flange 3n and the second outer flange 4w.

[0051] In this embodiment, all components in contact with the friction element (including the upper connecting plate 1, the fixed plate 3, and the moving plate 4) are fixed using fasteners. This avoids the thermal impact on the contact surface of the friction element caused by welding, resulting in smoother operation. Furthermore, the fasteners allow for tightening and pressing on both sides of the friction element, providing a good clamping effect and reducing vibration and noise. Additionally, the coordinated design of the inner and outer ring friction elements further enhances the reduction of vibration and noise.

[0052] For fasteners, bolts, screws, rivets, or pins can be used. In this embodiment, bolts are selected as the fasteners, such as... Figure 4 and Figure 9 As shown, the first fastener 81, the second fastener 82, and the third fastener 83 respectively include a first screw 81a, a second screw 82a, and a third screw 83a for connection, and a first nut 81b, a second nut 82b, and a third nut 83b for fastening.

[0053] For the outer ring friction element 5 and the inner ring friction element 6, friction strips or ball bearing assemblies that provide rolling support can be selected. They can be combined in different ways; for example, in this first embodiment, such as... Figure 3 and Figure 4As shown, the outer ring friction element 5 is configured as a friction strip, and the inner ring friction element 6 is configured as a ball bearing assembly. (Matching...) Figure 26 As shown, the ball assembly includes an annular retainer 63 and a plurality of balls 64 spaced circumferentially on the annular retainer 63, each ball 64 capable of rolling freely within its diameter. The fixed plate 3 and the moving plate 4 are supported by the balls 64, and the fixed plate 3 is supported by a friction strip between itself and the upper connecting plate 1. During the rotation of the upper connecting plate 1 and the moving plate 4 relative to the lower connecting plate 2 and the fixed plate 3, the balls 64 in the ball assembly experience relative rolling friction with the fixed plate 3 and the moving plate 4, ensuring both rigidity and low resistance. The friction strip is specifically made of POM (a type of synthetic resin, also known as polyoxymethylene resin), a material with high self-lubrication, good rigidity, and a low coefficient of dynamic friction of ≤0.1, ensuring smooth operation.

[0054] In the second embodiment, see Figure 5 As shown, the outer ring friction element 5 is configured as a ball bearing assembly, and the inner ring friction element 6 is configured as a friction strip. In the third embodiment, see [reference needed]. Figure 6 As shown, both the outer ring friction element 5 and the inner ring friction element 6 are configured as ball bearing assemblies. In the fourth embodiment, see [reference needed]. Figure 7 As shown, both the outer ring friction element 5 and the inner ring friction element 6 are configured as friction strips.

[0055] It should be noted that:

[0056] The scheme using a combination of friction strips and ball bearing assemblies (i.e., the first and second embodiments) can simultaneously address the issues of vibration and stiffness, achieving better running smoothness compared to the scheme using double ball bearing assemblies (i.e., the third embodiment) and the scheme using double friction strips (i.e., the fourth embodiment). Furthermore, the scheme where the outer ring friction element 5 is a friction strip (i.e., the first and fourth embodiments) does not exhibit pitting issues when the support structure is subjected to downward positive pressure, compared to the scheme where the outer ring friction element 5 is a ball bearing assembly (i.e., the second and third embodiments). Even if the inner ring friction element 6 is a ball bearing assembly (i.e., the first embodiment), because the ball bearing assembly is on the inside, it is not directly subjected to the positive pressure. Therefore, the balls will not produce pits on the inner edge of the fixed plate 3 (i.e., the first inner flange 3n of the fixed plate 3) and the outer edge of the moving plate 4 (i.e., the second outer flange 4n of the moving plate 4).

[0057] For solutions employing ball bearing assemblies (i.e., the first, second, and third embodiments), to constrain the rolling of the balls 64 within the corresponding tracks, it is preferable to designate the contact area between the balls 64 and the track surface. Taking the first embodiment as an example, this track surface is formed on the first inner flange 3n of the fixed plate 3 and the second outer flange 4w of the moving plate 4. When the ball bearing assembly is clamped, the track surface is in close contact with the corresponding balls 64. The balls 64 can be divided into multiple sets of specifications, and an interference fit can be selected according to the track surface to ensure clamping without causing abnormal noise.

[0058] For solutions employing friction strips (i.e., the first, second, and fourth embodiments), to prevent vibration and abnormal noise during vehicle operation due to vehicle vibration or the friction strip rotating along with the supporting structure, certain limiting structures are required. See details in the [link to relevant documentation]. Figures 21-25 As shown, the friction strip has multiple protrusions 61 spaced circumferentially. The first outer flange and / or the first inner flange of the corresponding mounting plate 3 have multiple locking holes 32 for inserting into the corresponding protrusions 61, thus limiting the friction strip in the Z direction. Furthermore, the friction strip also has multiple extended ears 62 spaced circumferentially. The outer edge of the first outer flange and / or the inner edge of the first inner flange of the corresponding mounting plate 3 have multiple notches 33 for inserting into the corresponding extended ears 62, thus limiting the friction strip in the X and Y directions. By using both the protrusions 61 and the extended ears 62 to limit the friction strip, limiting it simultaneously in the X, Y, and Z directions, effectively fixing the friction strip and improving the limiting effect. Of course, in some embodiments, only the protrusions 61 or the extended ears 62 may be provided, while the locking holes 32 and notches 33 are correspondingly provided.

[0059] Furthermore, the specific structure of the friction strip can be a continuous ring structure or a non-continuous ring structure composed of multiple first arc segments I and multiple second arc segments II arranged at intervals. The first arc segment I has a first elastic coefficient, and the second arc segment II has a second elastic coefficient lower than the first elastic coefficient. Taking the fourth embodiment as an example, in conjunction with... Figure 19 and Figure 20As shown, the outer ring friction element 5 adopts a continuous ring structure, and the inner ring friction element 6 is composed of multiple first arc segments I and multiple second arc segments II arranged in a ring at intervals. The first arc segments I and the second arc segments II can be arranged alternately or at intervals according to other rules. By setting the inner friction strip to be composed of two arc segments with different elastic coefficients, the arc segment with a higher elastic coefficient (i.e., the first arc segment I) is in an interference fit with the fixed plate 3 and the moving plate 4 (mainly to absorb assembly tolerances), while the arc segment with a lower elastic coefficient (i.e., the second arc segment II) is normally matched with the fixed plate 3 and the moving plate 4 (mainly to ensure rigidity).

[0060] Ideally, in combination Figure 4 , Figures 8-10 As shown, the rotary joint assembly 100 also includes a fourth fastener 84. The upper connecting plate 1 is fastened to the seat frame 200 via the third fastener 83 and the fourth fastener 84. The fourth fastener 84 can also be a bolt, screw, rivet, or pin. In this embodiment, the fourth fastener 84 is also in the form of a bolt, specifically including a fourth screw 84a for connection and a fourth nut 84b for fastening. For details regarding the number and arrangement of the third fastener 83 and the fourth fastener 84, please refer to [reference needed]. Figure 8 As shown, the position circled by the square dashed line indicates the location of the third fastener 83, and the position circled by the elliptical dashed line indicates the location of the fourth fastener 84. The addition of the fourth fastener 84 increases the contact area between the upper connecting plate 1 and the seat frame 200, effectively increasing the thickness of the upper connecting plate 1. Under stress, the upper connecting plate 1 and the seat frame 200 deform together, enhancing the rigidity of the support structure. Specifically, in conjunction with... Figure 10 As shown, the upper connecting plate 1 and the seat frame 200 are connected at a single point only by the third fastener 83. When subjected to force F, the upper connecting plate 1 itself deforms under the force, resulting in poor rigidity. However, when the upper connecting plate 1 and the seat frame 200 are connected simultaneously by the third fastener 83 and the fourth fastener 84, when subjected to force F, the upper connecting plate 1 and the seat frame 200 deform together, enhancing the rigidity of the support structure.

[0061] Furthermore, such as Figure 9As shown, the upper connecting plate 1 has an inner mounting surface 1n for the fourth fastener 84 and an outer mounting surface 1w for the third fastener 83 on its inner and outer sides, respectively. The height of the outer mounting surface 1w is greater than that of the inner mounting surface 1n. Since the frame mounting surface 201 of the seat frame 200 is flush and has greater rigidity than the upper connecting plate 1, when the third fastener 83 and the fourth fastener 84 are tightened, the frame mounting surface 201 will tend to deform downwards to maintain a consistent height, which is equivalent to clamping the outer ring friction member 5. At the same time, the inner ring friction member 6 is clamped on both sides by the tightening of the first fastener 81 and the second fastener 82 on both the inner and outer sides. Through the above structural design, both the outer ring friction member 5 and the inner ring friction member 6 can be clamped, so that neither the outer ring friction member 5 nor the inner ring friction member 6 will have vibration or abnormal noise problems. Depending on the actual situation, if the length of the inner edge of the connecting plate 1 extending to the inner side of the outer ring friction member 5 is short, the inner mounting surface 1n and the outer mounting surface 1w can also be formed on the outer side of the outer ring friction member 5 at the same time. Based on the height difference of the mounting surfaces, the same clamping effect can be achieved on the outer side of the outer ring friction member 5, but the effect may be relatively weaker.

[0062] For a better option, see [link / reference] Figures 2-7 , Figure 13 and Figure 16 As shown, the rotary joint assembly 100 also includes an upper clamp 71 and a lower clamp 72. The upper clamp 71 is fixedly connected to the third fastener 83 or the upper connecting plate 1, and the lower clamp 72 is fixedly connected to the lower connecting plate 2. The inner edge of the upper clamp 71 and the outer edge of the lower clamp 72 extend and bend relative to each other to form an interlocking structure with a certain gap. Through the design of the clamp structure, the strength and overall stability of the support structure are improved. The upper clamp 71 can be welded and fixed to the third fastener 83 or the upper connecting plate 1. Depending on the welding position, the gap between it and the lower connecting plate 2 can be adjusted. The lower clamp 72 can be welded and fixed to the lower connecting plate 2, or it can be fastened together with the lower connecting plate 2 and the fixed plate 3 by the second fastener 82, or it can be fixed by a combination of welding and fastening. It should be noted that even if the upper clamp 71 and the lower clamp 72 are fixed by welding, it will not have a thermal impact on the contact surfaces with the outer ring friction element 5 and the inner ring friction element 6, because the upper clamp 71 and the lower clamp 72 are relatively independent structures, and they do not have direct contact with the outer ring friction element 5 and the inner ring friction element 6. Furthermore, the upper clamp 71 and the lower clamp 72 are arranged in a discontinuous manner, i.e., as shown... Figure 2As shown, it has better disassembly and assembly capabilities. Moreover, based on the strength requirements, the number of the upper clamp 71 and the lower clamp 72 can be increased, decreased, or even eliminated without affecting the setting of the friction components, resulting in a high degree of platformization.

[0063] Preferably, the support structure further includes a control mechanism, which is mounted on the upper connecting plate 1 and acts on the fixed plate 3, or mounted on the lower connecting plate 2 and acts on the movable plate 4, to control the rotation of the upper connecting plate 1 relative to the lower connecting plate 2.

[0064] The control mechanism can be an electric mechanism; for details, please refer to [link / reference]. Figures 11-13As shown, the control mechanism includes an electric locking fixed plate 92, an electric locking movable plate 93, and a drive motor 94. The electric locking fixed plate 92, the electric locking movable plate 93, and the drive motor 94 are pre-assembled as a whole. The support mechanism also includes an upper cover plate 91. The outer edge of the upper cover plate 91 is fastened to the inner edge of the movable plate 4 by a fifth fastener 85. The inner edge of the upper cover plate 91 is fastened to the electric locking movable plate 93 by a sixth fastener 86. The electric locking fixed plate 92 is fastened to the lower connecting plate 2 by a seventh fastener 87. The electric locking movable plate 93 can rotate relative to the electric locking fixed plate 92. The drive motor 94 is mounted on the electric locking fixed plate 92 and is used to drive or lock the rotation of the electric locking movable plate 93 relative to the electric locking fixed plate 92. The fifth fastener 85, the sixth fastener 86, and the seventh fastener 87 can also be bolts, screws, rivets, or pins. In this embodiment, the fifth fastener 85, the sixth fastener 86, and the seventh fastener 87 are also bolts, including a fifth screw 85a, a sixth screw 86a, and a seventh screw 87a for connection, and a fifth nut 85b, a sixth nut 86b, and a seventh nut 87b for fastening. The outer edge of the upper cover plate 91 has a moving plate cover plate connection hole 911 through which the fifth screw 85a passes, and the inner edge has a cover plate locking connection hole 912 through which the sixth screw 86a passes. The inner edge of the moving plate 4 has a moving plate cover plate connection hole 41 through which the fifth screw 85a passes. The drive shaft of the drive motor 94 is connected to the electric locking movable disc 93. When the drive shaft drives the electric locking movable disc 93 to rotate, the electric locking movable disc 93 drives the upper cover plate 91, which in turn drives the movable disc 4 and the upper connecting plate 1 to rotate relative to the lower connecting plate 2. When the drive shaft stops rotating, all the above-mentioned rotational movements will stop at the same time, and the upper connecting plate 1 will be in a locked state. It should be noted that the electric locking movable disc 93 can also be connected to the upper connecting plate 1 through the upper cover plate 91, or it can be directly connected to the movable disc 4 or the upper connecting plate 1 without going through the upper cover plate 91. Alternatively, the electric locking fixed plate 92 can be directly or indirectly connected to the movable plate 4 or the upper connecting plate 1, while the electric locking movable plate 93 can be connected to the lower connecting plate 2. When the electric locking fixed plate 92 is connected to the movable plate 4 or the upper connecting plate 1, when the drive shaft of the drive motor 94 drives the electric locking movable plate 93, since the lower connecting plate 2 is relatively fixed, the drive motor 94 will rotate together with the electric locking fixed plate 92, thereby causing the movable plate 4 or the upper connecting plate 1 to rotate relative to the lower connecting plate 2.

[0065] The control mechanism can also be a manual mechanism; for details, please refer to [link / reference]. Figures 14-18As shown, the control mechanism includes a manual locking mounting component 95 and a manual locking pin 96. The manual locking mounting component 95 is mounted on the upper connecting plate 1, and the manual locking pin 96 is movably mounted on the manual locking mounting component 95. Both the upper connecting plate 1 and the fixed plate 3 have pin holes corresponding to the position of the manual locking pin 96 for the manual locking pin 96 to be inserted. When the manual locking pin 96 is inserted into the pin hole of the fixed plate 3, the upper connecting plate 1 cannot rotate relative to the lower connecting plate 2 and is in a locked state. When the manual locking pin 96 is pulled upwards out of the pin hole of the fixed plate 3, the locked state is released, and the upper connecting plate 1 can rotate relative to the lower connecting plate 2. Preferably, to ensure that the manual locking pin 96 does not contact the fixed plate 3 during rotation and to prevent abnormal noise, the area between the first outer flange 3w and the first inner flange 3n of the fixed plate 3 is concave in shape, but the area corresponding to the locking position of the manual locking pin 96 is bent upward to form a locking protrusion 31, and the corresponding pin hole is formed on the locking protrusion 31, as shown in the figure below. Figures 16-18 and cooperate Figure 4 As shown.

[0066] As can be seen from the above structure, the control actions achievable by the electric control mechanism and the manual control mechanism are different. For the manual mechanism, the control action is limited to locking the rotation of the upper connecting plate 1 relative to the lower connecting plate 2; this rotation is achieved by manual force. In contrast, the electric mechanism can both drive the rotation of the upper connecting plate 1 relative to the lower connecting plate 2 and lock it by stopping the drive. Furthermore, the modular design of this rotating support structure allows the rotating assembly to be used by both manual and electric mechanisms, resulting in a wide range of applications.

[0067] Regarding the assembly steps of the rotary joint assembly 100 and its electric control mechanism, taking the first embodiment as an example, please refer to... Figure 2 and Figure 12 As shown:

[0068] 1) The overall installation sequence is from bottom to top. First, fix the lower connecting plate 2, and then stack the pre-assembled electric control mechanism and tighten the bolts to the lower connecting plate 2.

[0069] 2) Select appropriate size balls 64 according to the ball track surface dimensions of the fixed plate 3 and the moving plate 4, and place the balls 64 in the cage 63 to form a ball assembly (i.e., inner ring friction element 6).

[0070] 3) After placing the ball assembly in the ball track of the moving plate 4, stack the lower clamp 72 and the fixed plate 3.

[0071] 4) Tighten the bolts of the lower clamp 72 and the fixed plate 3 to the lower connecting plate 2 to ensure that the ball track surface falls on the upper surface of the ball 64.

[0072] 5) Place the friction strip (i.e. the moving disc 4) on the surface of the fixed disc 3, stack the upper connecting plate 1, and then tighten the bolts between the upper connecting plate 1 and the moving disc 4.

[0073] 6) Based on the gap between the upper clamp 71 and the lower clamp 72, weld and fix the upper clamp 71 to the upper connecting plate 1 or to the third fastener 83.

[0074] 7) Tighten the bolts of the upper cover plate 91, the moving plate 4, and the electric control mechanism to complete the assembly.

[0075] Regarding the assembly steps of the rotary joint assembly 100 and its manual control mechanism, the first embodiment will also be used as an example. (See attached document). Figure 2 and Figure 15 As shown:

[0076] 1) The overall installation sequence is from bottom to top. First, fix the lower connecting plate 2.

[0077] 2) Select appropriate size balls 64 according to the ball track surface dimensions of the fixed plate 3 and the moving plate 4, and place the balls 64 in the cage 63 to form a ball assembly (i.e., inner ring friction element 6).

[0078] 3) After placing the ball assembly in the ball track of the moving plate 4, stack the lower clamp 72 and the fixed plate 3.

[0079] 4) Tighten the bolts of the lower clamp 72 and the fixed plate 3 to the lower connecting plate 2 to ensure that the ball track surface falls on the upper surface of the ball 64.

[0080] 5) Place the friction strip (i.e. the moving disc 4) on the surface of the fixed disc 3, stack the upper connecting plate 1, and then tighten the bolts between the upper connecting plate 1 and the moving disc 4.

[0081] 6) Based on the gap between the upper clamp 71 and the lower clamp 72, weld and fix the upper clamp 71 to the upper connecting plate 1 or to the third fastener 83.

[0082] 7) Insert the manual locking pin 96 into the manual locking mounting part 95, and tighten the manual locking mounting part 95 to the upper connecting plate 1 with bolts to complete the assembly.

[0083] The present invention has been described in detail above with reference to the accompanying drawings and embodiments. Those skilled in the art can make various modifications to the present invention based on the above description. Therefore, certain details in the embodiments should not be construed as limiting the present invention, and the scope of protection of the present invention shall be defined by the appended claims.

Claims

1. A rotating support structure, characterized by, The application discloses a rotating support structure for realizing horizontal rotation of a seat framework around a central axis, which comprises a rotating pair assembly, the rotating pair assembly comprising a lower connecting plate, an upper connecting plate rotatable relative to the lower connecting plate around the central axis, a fixed disc and a movable disc arranged between the upper connecting plate and the lower connecting plate, an outer ring friction member and an inner ring friction member, wherein: the movable disc is fastened to the upper connecting plate by a first fastener, the fixed disc is fastened to the lower connecting plate by a second fastener, and the upper connecting plate is fastened to the seat framework by a third fastener; the outer ring friction member is clamped between the upper connecting plate and the outer edge of the fixed disc, and the inner ring friction member is clamped between the inner edge of the fixed disc and the outer edge of the movable disc.

2. The rotating support structure of claim 1, wherein, The rotating pair assembly further comprises a fourth fastener, and the upper connecting plate is fastened to the seat framework by the third fastener and the fourth fastener, so as to enhance the rigidity of the rotating support structure.

3. The rotating support structure of claim 2, wherein, An inner side mounting surface for connecting the fourth fastener and an outer side mounting surface for connecting the third fastener are respectively formed on the upper connecting plate on the inner side and the outer side of the outer ring friction member, and the height of the outer side mounting surface is higher than that of the inner side mounting surface, so as to clamp the outer ring friction member.

4. The rotating support structure of claim 1, wherein, The control mechanism is installed on the upper connecting plate and acts on the fixed disc, or is installed on the lower connecting plate and acts on the movable disc, so as to control the rotation of the upper connecting plate relative to the lower connecting plate.

5. The rotating support structure of claim 4, wherein, The control mechanism comprises an electric locking fixed disc, an electric locking movable disc and a driving motor, one of the electric locking fixed disc and the electric locking movable disc is connected with the lower connecting plate, the other of the electric locking fixed disc and the electric locking movable disc is connected with the upper connecting plate or the movable disc in a direct or indirect mode, the electric locking movable disc is rotatable relative to the electric locking fixed disc, and the driving motor drives or locks the relative rotation between the electric locking movable disc and the electric locking fixed disc.

6. The rotating support structure of claim 4, wherein, The control mechanism comprises a manual locking mounting member and a manual locking bolt, the manual locking mounting member is installed on the upper connecting plate, and the manual locking bolt is movably arranged on the manual locking mounting member, so that the manual locking bolt can pass through the fixed disc, thereby limiting the rotation of the movable disc relative to the fixed disc.

7. The rotating support structure of claim 1, wherein, One of the outer ring friction member and the inner ring friction member is a friction strip, and the other is a ball assembly.

8. The rotating support structure of claim 1, wherein, Both the outer ring friction member and the inner ring friction member are ball assemblies.

9. The rotating support structure of claim 1, wherein, Both the outer ring friction member and the inner ring friction member are friction strips.

10. A rotational support structure according to any one of claims 7, 9, wherein: The inner edge and the outer edge of the fixed disc extend towards the upper connecting plate and are respectively folded inward and outward to form a first inward flange and a first outward flange, and the outer edge of the movable disc extends towards the lower connecting plate and is folded outward to form a second outward flange; the outer ring friction member is clamped between the upper connecting plate and the first outward flange of the fixed disc, and the inner ring friction member is clamped between the first inward flange of the fixed disc and the first outward flange of the movable disc.

11. The rotating support structure of claim 10, wherein, A plurality of protrusions are arranged on the friction strip in a ring direction, and a plurality of clamping holes are formed on the first outward flange and / or the first inward flange of the fixed disc corresponding to the friction strip, for inserting the protrusions one by one.

12. The rotating support structure of claim 10, wherein, A plurality of extended ears are arranged on the friction strip in a ring direction, and a plurality of notches are formed on the outer edge of the first outward flange and / or the inner edge of the first inward flange of the fixed disc corresponding to the friction strip, for clamping the extended ears one by one.

13. The rotating support structure of any one of claims 7, 9, wherein, The outer ring friction member and / or the inner ring friction member is a continuous ring structure, or a non-continuous ring structure formed by a plurality of first arc-shaped segments and a plurality of second arc-shaped segments, the first arc-shaped segments have a first elastic coefficient, and the second arc-shaped segments have a second elastic coefficient lower than the first elastic coefficient.

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