Swivel mechanism and electric rocking chair

Abstract

Swivel mechanism, characterized in that it comprises: a base; a pivot support frame on the base and having a left support plate and a right support plate, wherein a suspension point A and a suspension point B are provided at both upper ends of the left and right support plates; two iron frame support frames, each arranged on an outer side of the left and right support plates and each comprising a first rocker arm and a second rocker arm; wherein the upper end of the first rocker arm and the second rocker arm are each hinged to the suspension point A and the suspension point B of the respective support plates, and the lower end of the first rocker arm and the second rocker arm are each hinged to a hinge point C and a hinge point D of a support element; and wherein at least one first iron frame connection point, which is arranged on a side of the articulation point C facing away from an iron frame leg, and at least one second iron frame connection point, which is arranged on a side of the articulation point D facing an iron frame backrest, are provided on the support element.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application is based on and claims priority from Chinese patent application No. 202422007903.4, filed on August 19, 2024, and Chinese patent application No. 202422205494.9, filed on September 9, 2024. The entire contents of these two applications are incorporated into this application by reference. TECHNICAL FIELD

[0002] The present invention belongs to the field of furniture and particularly relates to a swivel mechanism and an electric rocking chair. STATE OF THE ART

[0003] An existing swivel mechanism for an electric rocking chair can drive a sofa frame to swing in a front-to-back direction. However, the current swivel mechanism is often customized to the structure of the supporting sofa frame, is not universally applicable, and cannot meet the installation requirements of different types of sofa frames. Even if some swivel mechanisms are compatible with various sofa frames, due to the structural limitations of the swivel mechanisms, the swing amplitude in the front-to-back direction and the movement in the height direction are poorly coordinated during a swing operation, making smooth swinging difficult.

[0004] Therefore, the current technical task is to design a swivel mechanism that not only adapts to different sofa iron frames, but also effectively coordinates the swivel amplitude in the front-back direction and the movement in the height direction during one swivel operation to achieve a smooth swivel effect.

[0005] It should be noted that the information disclosed in the “Prior Art” section is intended only to understand the background technology of the concept of the present application and is therefore not considered prior art information. CONTENT OF THE PRESENT INVENTION

[0006] To achieve the above-mentioned technical problem, the embodiments of the present disclosure provide at least one swing mechanism and an electric rocking chair.

[0007] The embodiments of the present disclosure provide a pivoting mechanism comprising: a base; a pivot support frame on the base and having a left support plate and a right support plate, wherein a suspension point A and a suspension point B are provided at both upper ends of the left and right support plates; two iron frame support frames, each arranged on an outer side of the left and right support plates and each comprising a first rocker arm and a second rocker arm; wherein the upper end of the first rocker arm and the second rocker arm are each hinged to the suspension point A and the suspension point B of the respective support plates, and the lower end of the first rocker arm and the second rocker arm are each hinged to a hinge point C and a hinge point D of a support element; and wherein at least one first iron frame connection point, which is arranged on a side of the articulation point C facing away from an iron frame leg, and at least one second iron frame connection point, which is arranged on a side of the articulation point D facing an iron frame backrest, are provided on the support element.

[0008] The advantageous effects of the present invention are as follows: In the swing mechanism and electric rocking chair according to the present invention, the suspension point A, the suspension point B, the hinge point C, and the hinge point D form an approximately inverted trapezoidal structure to limit a swing distance in the front-back direction and a movement distance in the height direction; when the iron frame is installed in the swing mechanism, the support positions at the bottom of a left iron frame part and a right iron frame part, such as the support ends, can correspond to the iron frame connection points on the support member, thereby improving the installation compatibility of the iron frame; thus, a nearly uniform swing effect can be achieved even when different types of iron frames are installed.

[0009] Additional features and advantages of the present invention will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the present invention. The objects and other advantages of the present invention will be attained by the structures particularly pointed out in the description, claims, and drawings.

[0010] In order to make the above-mentioned objects, features and advantages of the present invention clearer and more understandable, preferred embodiments are described in more detail below with reference to the accompanying figures. SHORT DESCRIPTION OF THE DRAWING

[0011] To more clearly illustrate the technical solutions in the detailed embodiments of the present invention or in the prior art, the drawings to be used in describing the detailed embodiments or the prior art are briefly presented below. Obviously, the drawings in the following description represent only some embodiments of the present invention. Those of ordinary skill in the art can obtain further drawings based on these drawings without performing an inventive work. Fig. 1 shows a schematic structural view of a pivot mechanism according to an embodiment of the present disclosure; Fig. 2 shows a schematic perspective view of the pivot mechanism according to the embodiment of the present disclosure after installation of an iron frame; Fig. 3 shows a side view of the swivel mechanism according to the embodiment of the present disclosure after installation of the iron frame; Fig. 4 shows a first structural side view of the pivot mechanism according to the embodiment of the present disclosure moving toward the side of a leg; Fig. 5 shows a second structural side view of the pivot mechanism according to the embodiment of the present disclosure moving toward the side of a leg; Fig. 6 shows a schematic view of the pivoting mechanism according to the embodiment of the present disclosure in a pivoting operation; Fig. 7 is a schematic view showing a pivoting operation in which the pivoting mechanism according to the embodiment of the present disclosure moves toward the side of a seatback; Fig. 8 shows a schematic structural view of the swing mechanism according to the embodiment of the present disclosure in a naturally hanging state; Fig. 9 shows a schematic structural view of the swing mechanism according to the embodiment of the present disclosure driven by a linear actuator; Fig. 10 shows a schematic view of a partial structure of the pivot mechanism and an enlarged schematic view of the eccentric wheel used according to the embodiment of the present disclosure; and Fig. 11 shows a schematic structural view of a pivot mechanism according to another embodiment of the present disclosure. List of reference symbols:

[0012] Base 100; pivot support frame 200, left support plate 210a, right support plate 210b, suspension point A, suspension point B; iron frame support frame 300, first rocker arm 310a, second rocker arm 310b, support member 320, first iron frame connection point 321; second iron frame connection point 322, drive cross arm 330, joint point C, joint point D; left iron frame part 400a, right iron frame part 400b; drive mechanism 500, linear actuator 501, joint member 510, drive motor 520, drive motor output shaft 521, crank arm 530, eccentric wheel 540, pivot bearing 550. DETAILED DESCRIPTION

[0013] To further clarify the objectives, technical solutions, and advantages of the embodiments of the present invention, the technical solutions of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention and do not encompass all embodiments. All other embodiments that can be achieved by a person skilled in the art based on the embodiments of the present invention without inventive effort fall within the scope of the present invention.

[0014] The terms used herein describe specific example configurations only and are not intended to be limiting. The singular articles "a," "an," and "the" as used herein can also include the plural forms unless the context clearly indicates otherwise. The terms "comprise," "include," and "have" are inclusive and thus specify the presence of a feature, step, operation, element, and / or component, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not meant to be performed in the order discussed or illustrated unless that order is expressly identified as an order of performance.Additional or alternative steps are applicable.

[0015] As used herein, the terms "in one embodiment," "according to an embodiment," "in some embodiments," and the like generally refer to the fact that a particular feature, structure, or characteristic following those terms may be included in at least one embodiment of the present disclosure. Therefore, a particular feature, structure, or characteristic may be included in more than one embodiment of the present disclosure, so these terms do not necessarily refer to the same embodiment. As used herein, the terms "example," "exemplary," etc., function as an example, instance, or illustration.Any embodiment, aspect, or design described herein as an "example" or "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments, aspects, or designs. Rather, the use of the terms "example," "exemplary," and the like is intended to specifically illustrate concepts.

[0016] A swing mechanism for an electric rocking chair drives a sofa iron frame to swing in a front-to-back direction. However, the current swing mechanism is often specially designed depending on the structure of the supporting iron frame, is not universally applicable, and cannot support different iron frame structures. Even if it can be compatible with various iron frames, due to the structural limitations of the swing mechanism, the swing amplitude in the front-to-back direction and the movement in the height direction are poorly coordinated during a swing operation, making it difficult to meet the requirement of smooth swinging.

[0017] Therefore, the current technical task is to design a swivel mechanism that not only adapts to different sofa iron frames, but also effectively coordinates the swivel amplitude in the front-back direction and the movement in the height direction during one swivel operation to achieve a smooth swivel effect.

[0018] In the present embodiment, an approximately inverted trapezoidal structure is constructed, which is formed by a suspension point A, a suspension point B, a hinge point C, and a hinge point D to limit a swing distance in the front-to-back direction and a movement distance in the height direction. When incorporating an iron rack into a swing mechanism according to the present invention, the support positions at the bottom of a left iron rack part and a right iron rack part, such as the support ends, can correspond to iron rack connection points on the support member, thereby improving the installation compatibility of the iron rack. Even when different types of iron racks are installed, a smooth swing effect can be achieved.

[0019] Please note that similar reference numerals and letters represent similar objects in the following figures. Once an object is defined in one figure, it does not need to be further defined or explained in subsequent figures. Furthermore, the thickness of a component may be exaggerated or reduced in the figures to effectively describe the technical content.

[0020] Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features in these embodiments may be combined with each other unless there is a conflict.

[0021] Fig. Figures 1 to 3 serve to better illustrate the assembly relationship between the swivel mechanism and the sofa iron frame. The specific assembly structure is shown in Fig. 2 and Fig. 3. In order to provide an embodiment of at least one pivoting mechanism that achieves the above-mentioned object, in particular in Fig. 1 shows a schematic structural view of a pivoting mechanism according to an embodiment of the present disclosure. The pivoting mechanism may include a base 100, a pivot support frame 200, a left support plate 210a, a right support plate 210b, a suspension point A, a suspension point B, and two iron frame support frames 300, each of which is arranged corresponding to the two support plates, namely the left support plate 210a and the right support plate 210b. The iron frame support frame 300 includes a first rocker arm 310a, a second rocker arm 310b, a support element 320, a hinge point C, and a hinge point D. Reference is made to Fig. 2 and Fig. 3 to better illustrate the mounting relationship between the swivel mechanism and the sofa iron frame. Arrow F1 indicates the direction of the swivel, and arrow F2 indicates the direction of the backrest. A first iron frame connection point 321 for supporting a left iron frame part 400a and a second iron frame connection point 322 for supporting a right iron frame part 400b are provided. The left iron frame part 400a and the right iron frame part 400b are mounted symmetrically on the support member 320, thus forming the entire structure of the sofa iron frame. Fig. 1, the pivot support frame 200 is arranged on the base 100 and includes a left support plate 210a and a right support plate 210b, with a suspension point A and a suspension point B provided at both upper ends of the left support plate 210a and the right support plate 210b, respectively; the two iron rack support frames 300 are each arranged on an outer side of the left support plate 210a and the right support plate 210b, respectively, and each includes a first rocker arm 310a and a second rocker arm 310b; wherein the upper end of the first rocker arm 310a and the second rocker arm 310b are each hinged to the suspension point A and the suspension point B of the respective support plates, and the lower end of the first rocker arm 310a and the second rocker arm 310b are each hinged to a joint point C and a joint point D of a support element 320. And as in Fig. 3, at least one first iron frame connection point 321, which is arranged on a side of the articulation point C facing away from an iron frame leg, and at least one second iron frame connection point 322, which is arranged on a side of the articulation point D facing an iron frame backrest, are provided on the support element 320.

[0022] In some embodiments, in practical use, different models of left iron frame parts 400a and right iron frame parts 400b can be assembled as needed to form a complete set of sofa iron frame, because a longer, reserved space is provided on the support element 320 on both a side of the hinge point C facing away from the iron frame leg and a side of the hinge point D facing the iron frame backrest.

[0023] Combined with Fig. 1, an approximately inverted trapezoid is formed by suspension point A, suspension point B, articulation point C, and articulation point D, with support element 320 located at the lower portion of the inverted trapezoid, and two support elements 320 each supporting the left iron frame part 400a and the right iron frame part 400b. To ensure the panning stability caused by the deformation of the aforementioned inverted trapezoid structure during a panning operation, in some embodiments, corresponding parameters for the inverted trapezoid structure and the panning operation are defined as follows:

[0024] Fig. 4 shows a schematic view of the pivot mechanism pivoting in the F1 direction, and Fig. 6 shows a schematic view of the swing mechanism swinging in the F1 direction and the F2 direction, where the F1 direction is shown by a solid line, the F2 direction is shown by a dashed line, and the swing angle of the first rocker arm 310a is shown by β.

[0025] The pivot angle β of the first rocker arm 310a is, as in Fig. 4 and Fig. 6, is limited to 10° to 55°, preferably 25 to 50°, and may be more specifically 28°, 34°, 45°, or 48°. A straight-line distance between the suspension point A and the suspension point B is L1, and a straight-line distance between the hinge point C and the hinge point D is L2, where L1:L2 = (12 to 13):(10 to 12). The above values are ratios that can be adjusted depending on actual conditions. To meet the above restrictions, L1 can be limited to 240 to 260 mm and L2 to 200 to 240 mm. By limiting the vertical distances as well as the swing angle β of the first rocker arm 310a, the overall deformation of the inverted trapezoidal structure during swinging can be better controlled, and a more stable swinging state can be achieved.

[0026] With reference to Fig. 4 and Fig. 5, when pivoting the support element 320, the first rocker arm 310a pivots towards the side of the iron frame leg (see arrow direction F1), whereby, when the first rocker arm 310a pivots with maximum amplitude towards the side of the iron frame leg, the maximum angle formed by a connecting line between the joint point C and the joint point D and the horizontal plane is α1. α1 lies in Fig. 4 above the horizontal line and can be defined as a positive value, while α1 in Fig. 5 below the horizontal line and can be defined as a negative value. With reference to Fig. 6 and Fig. 7, the first rocker arm 310a pivots towards the side of the iron frame backrest (see arrow direction F2), whereby the joint point C and the joint point D are moved and these movements of Fig. 6 to Fig. 7, wherein, when the first rocker arm 310a pivots with maximum amplitude toward the side of the iron frame backrest, the maximum angle formed by a line connecting the articulation point C' and the articulation point D' and the horizontal plane is α2, where α2 is above the horizontal line and is defined as a positive value, where α1: α2: L2 = (1° to -4°): (2° to 6°): (200 mm to 240 mm). As can be seen from Fig. As can be seen in Figure 7, the opening directions of α1 and α2 are opposite. α1 and α2 can be converted into the tilt angles of a human sitting posture during a swivel operation. By limiting the above parameters, a better tilt angle can be obtained while sitting, and at least the comfort of adjusting one or more postures of the sofa iron frame, such as sitting posture, TV position, and lying posture, can be ensured.

[0027] With reference to Fig. 6, a straight line distance between the suspension point A and the suspension point B is L1, and a straight line distance between the articulation point C and the articulation point D is L2, where L1:L2 = (240 to 260):(200 to 240). And with reference to Fig. 3 and Fig. 4, when swiveling the support element, there is a height difference between the highest and lowest positions of the hinge point CH1, where L1:L2:H1 = (240 to 260): (200 to 240): (2 to 25). By limiting the above parameters, the swivel height can be controlled during the swivel process while sitting, achieving a smoother swivel experience, thus ensuring at least the comfort of adjusting one or more postures of the sofa iron frame, such as sitting posture, TV posture, and lying posture.

[0028] With further reference to Fig. 6, a linear distance between the suspension point A and the suspension point B is L1, wherein a linear distance between the articulation point C and the articulation point D is L2, where L1:L2 = (240 to 260):(200 to 240); and when pivoting the support element, a pivot value in the front-to-rear direction is L, where the pivot value in the front-to-rear direction L is, in particular, the horizontal distance between the articulation point C, at which the first rocker arm 310a pivots maximally to the leg side, and the articulation point C', at which the first rocker arm 310a pivots maximally to the backrest side. Where L1:L2:L = (240 to 260):(200 to 240):(8 to 85). The front-to-back swing value L corresponds to a distance of the iron frame when swinging in the front-to-back direction.In some embodiments, by limiting the distance between L1 and / or L2 and / or L, the pivot amplitude in the front-to-back direction can be defined, allowing a smoother pivoting experience to be achieved, thereby ensuring at least the comfort of adjusting one or more postures of the sofa frame, such as sitting posture, TV posture, or lying posture. For example, by moving point C forward, the length of L2 can be shortened; that is, the pivot amplitude of L can be adjusted simultaneously. By reducing the pivot amplitude, pivoting becomes smoother.

[0029] With reference to Fig. 8, a straight-line distance between suspension point A and suspension point B is L1, whereby a straight-line distance between articulation point C and articulation point D is L2, and whereby suspension point A and suspension point B are approximately at the same height. Because in a naturally hanging state of the support element, suspension point A and suspension point B are approximately horizontal, a CD connecting line is formed between articulation point C and articulation point D, whereby a vertical distance of H exists between suspension point A and the CD connecting line. Here, L1: L2: H = (240 to 260): (200 to 240): (83 to 120). The above-mentioned value H determines the height of the support element and, in practice, also limits the ground clearance when the iron frame is pivoted. For example, in the naturally hanging state of the support element 320, the vertical distance H can be 90 mm, 112 mm, or 120 mm.As the support element 320 pivots, the vertical distance H changes. In order to maintain the distance between the sofa body and the floor and to ensure the seat height, the value of H in the naturally hanging state of the support element 320 is particularly important.

[0030] As in Fig. 1 and Fig. As shown in Figure 9, in some embodiments, the pivoting mechanism may comprise a drive mechanism 500 whose drive end is pivoted to a drive cross arm 330 arranged between two iron support frames to drive the support element for pivoting. For example, the first rocker arm 310a may be used as the drive arm via the drive cross arm 330, and the second rocker arm 310b may be used as the driven arm. Of course, in some embodiments, the second rocker arm 310b may also be used as the drive arm and the drive cross arm 330 as the driven arm.

[0031] With reference to Fig. 1 shows an optional connection mode of the drive mechanism in which the drive cross arm 330 is mounted between the first rocker arms 310a of the two iron frame support frames 300 and a joint element 510 is arranged between the drive cross arm 330 and the drive end.

[0032] Fig. Figure 1 shows a schematic structure with a drive motor 520, a crank arm 530, and an eccentric wheel 540 as one embodiment. Of course, other embodiments are also feasible. Fig. 1 merely shows a schematic view of an embodiment of the driving method and does not limit the specific embodiment of the pivoting mechanism to the need to use the drive motor 520, the crank arm 530 and the eccentric wheel 540 described above.

[0033] As in Fig. 9, for example, a linear drive 501 is used, wherein an extended end of the linear drive 501 serves as the drive end, wherein the extended end of the linear drive 501 is also hinged to the drive cross arm 330, wherein a telescopic distance of the linear drive 501 enables a pivoting angle of the first rocker arm 310a of 10° to 55°. The specific extension and retraction mode of the linear drive 501 is indicated by the arrow F3 in Fig. 9. And the first rocker arm pivots as shown by arrow F4.

[0034] With reference to Fig. 1 and Fig. 10, some functionalities of the present embodiment are described using the eccentric wheel as a specific implementation. In some embodiments, the eccentricity of the eccentric wheel 540 correlates positively with the pivoting amplitude of the pivoting support frame. By limiting the eccentricity of the eccentric wheel 540 (the specific parameter limiting the eccentricity is listed in the table below), the pivoting amplitude of the support member 320 can be adjusted to meet the installation and pivoting requirements of various types of electric rocking chair iron frames. Specifically, the suspension point A, the suspension point B, the pivot point C, and the pivot point D form an approximately inverted trapezoid, which, driven by the crank arm 530, enables the support member 320 to support the sofa iron frame and pivot cyclically along an elliptical trajectory, as shown in Fig. 3 to 7.

[0035] With reference to Fig. 6 and Fig. 10, the implementation of the above-mentioned eccentric wheel 540 is reflected as follows: The eccentricity a is the distance between an axis center O of a pivot bearing 550 and an axis center O' of an output shaft of the drive motor 521, wherein the pivot bearing 550 can be arranged concentrically within the eccentric wheel 540, wherein when pivoting the support element, the height difference between the highest and the lowest position of the articulation point C in the support element is H1, and wherein a:H1 = 1:(1 to 2).

[0036] With reference to Fig. 6 and Fig. 10, in some embodiments, it is provided that the eccentricity is a, wherein when pivoting the support element, a pivot value in the front-rear direction for the joint point is CL, and wherein a:L = 1:(3 to 5).

[0037] For example, for different eccentricities, the corresponding values of H1 and L are listed in the following table: Exzentrizität a (mm) H1 (mm) H2 (mm) H3 (mm) L (mm) L3 (mm) L4 (mm) 2,5 2,52 113,72 111,2 9,9 23,65 33,55 5 5,04 114,64 109,6 19,8 18,67 38,47 7,5 7,6 115,35 107,75 29,7 13,67 43,37 10 10,18 115,83 105,65 39,62 8,65 48,27 12,5 12,82 116,1 103,28 49,56 3,6 53,16 15 15,53 116,14 100,61 59,52 (-1,47) 58,05 17,5 18,36 115,97 97,61 69,51 (-6,56) 62,95 20 21,32 115,57 94,25 79,55 (-11,67) 67,88

[0038] In the table above, H2 represents the height difference between point C and point A in Fig. 6 when reaching the lowest point through point C, while H3 represents the height difference between point C and point A in Fig. 6 when reaching the highest point through point C. Height difference H1 = H2 - H3.

[0039] L3 stands for a horizontal movement distance of the joint point C in Fig. 6 relative to the vertical line of suspension point A when articulation point C moves towards the thigh side, i.e., along the F1 direction, until it reaches the stop. L4 represents the horizontal movement distance of point C' relative to the vertical line of suspension point A when articulation point C moves towards the backrest side, i.e., along the F2 direction, until it reaches the stop. The table specifies: if the articulation point is to the right of the vertical line of suspension point A, it is a positive value, such as the value of L3 in the table from 23.65 to 3.6; if the articulation point is to the left of the vertical line of suspension point A, it is a negative value, such as the value from -1.47 to -11.67. Fig. 6, the case where the hinge point is located to the left of the vertical line of the suspension point A is given as an example, where the distance difference between L3 and L4 is defined as the pivot value L=|L4-L3|.

[0040] From the above table, it can be concluded that the range of the height difference H1 corresponds to an eccentricity a between (a, 2a); and that the range of the swing value L corresponds to an eccentricity a between (3a, 5a).

[0041] With reference to Fig. 1 to Fig. 4, at least one embodiment further provides a pivoting mechanism which may specifically comprise: a base; a pivoting support frame 200 on the base and having a left support plate 210a and a right support plate 210b, wherein a suspension point A and a suspension point B are provided symmetrically at both upper ends of the left support plate 210a and the right support plate 210b; two iron rack support frames 300, each comprising a first rocker arm 310a and a second rocker arm 310b; wherein the upper end of the first rocker arm 310a and the second rocker arm 310b is hinged to the suspension point A and the suspension point B of the respective support plates, and the lower end of the first rocker arm 310a and the second rocker arm 310b is hinged to a hinge point C and a hinge point B of the respective support plates.a hinge point D of a support element 320; wherein the first rocker arm 310a has a pivot angle of 10° to 55°; and wherein a linear distance between the suspension point A and the suspension point B is L1 and a linear distance between the hinge point C and the hinge point D is L2, where L1:L2 = (240mm to 260mm):(200mm to 240mm). In the present embodiment, the support element 320 can be connected by connecting rods, which are shown in . Fig. 11 are arranged on the bottom of the left iron frame part 400a and the right iron frame part 400b. In the present embodiment, the assignment of the support element 320 is not restricted. Fig. Figure 11 shows a schematic structural view of a swivel mechanism according to another embodiment of the present disclosure, wherein the support member 320 may also be part of the base of the sofa iron frame. Therefore, in some embodiments, whether the support member 320 in the above-described swivel mechanism is part of the sofa iron frame does not constitute an obstacle to the actual implementation of the swivel mechanism.

[0042] With reference to Fig. 1 to Fig. 4, at least one embodiment further provides a pivoting mechanism which may specifically comprise: a left support plate 210a and a right support plate 210b, wherein a suspension point A and a suspension point B are provided at both upper ends of the left and right support plates; a first rocker arm 310a and a second rocker arm 310b, each corresponding to a support plate, and which are connected with their upper end to the suspension point A and the suspension point B, respectively, and with their lower end to a hinge point C and a hinge point D, respectively.a hinge point D of a support member 320, wherein a linear distance between the suspension point A and the suspension point B is L1, and a linear distance between the hinge point C and the hinge point D is L2, where L1:L2 = (240mm to 260mm):(200mm to 240mm); and a drive mechanism 500 that drives the first rocker arm and the second rocker arm to pivot synchronously, wherein the pivot angle of the first rocker arm is 10° to 55°. In the present embodiment, the support member 320 can be connected by connecting rods shown in FIG. Fig. 11 are arranged on the bottom of the left iron frame part 400a and the right iron frame part 400b. In the present embodiment, the assignment of the support element 320 is not restricted.

[0043] Regarding the limitations of the relevant parameters of the approximately inverted trapezoidal structure formed by the suspension point A, the suspension point B, the articulation point C and the articulation point D, reference is made to the descriptions of the above-mentioned embodiments, which are not repeated here.

[0044] In some embodiments, reference is made to the above descriptions for the specific implementation of the drive mechanism 500.

[0045] With reference to Fig. 2 to Fig. 3, at least one embodiment further provides an electric rocking chair including a swing mechanism and a sofa iron frame disposed on the support member 320 and including a left part and a right part (such as the left iron frame part 400a and the right iron frame part 400b), wherein a support end of the left iron frame part and the right iron frame part is each disposed on a corresponding support member.

[0046] In some embodiments, at least two support ends of the left iron frame part and the right iron frame part are each connected to a first iron frame connection point located on a side of the articulation point C facing away from the iron frame leg, and a second iron frame connection point located on a side of the articulation point D facing the iron frame backrest.

[0047] With reference to Fig. 11, the support element 320 can also be part of the base of the sofa iron frame. The support element 320 can therefore, as in Fig. 1 to 10, or as shown in Fig. 11, can be considered as part of the sofa iron frame.

[0048] Since the support member can be provided separately or as part of the sofa iron frame, the iron frame connection point can be adjusted depending on the actual situation. As long as an approximately inverted trapezoid is formed by the suspension point A, the suspension point B, the hinge point C, and the hinge point D, and the support member 320 is located at the lower portion of the inverted trapezoid, the corresponding technical effect of the swivel mechanism according to the invention can be achieved.

[0049] In summary, in the swing mechanism and electric rocking chair according to the invention, the suspension point A, the suspension point B, the joint point C, and the joint point D form an approximately inverted trapezoidal structure to limit the swing distance in the front-to-back direction and the movement distance in the height direction. When installing the iron frame in the swing mechanism, the support positions at the bottom of the left iron frame part and the right iron frame part can correspond to the iron frame connection points of the support member, thereby improving the installation compatibility of the iron frame and achieving the same swing effect after installing different iron frames.

[0050] Unless otherwise noted, the terms "about", "approximately", "substantially", etc., used in the above discussion to describe a numerical value represent a deviation of + / - 10% of the value.

[0051] When reference is made herein to a first component being located on a second component, this may mean that the first component may be formed directly on the second component or that a third component may be inserted between the first component and the second component. Furthermore, the thickness of a component may be exaggerated or reduced in the figures to effectively describe the technical content.

[0052] When an element or layer is referred to herein as "lying on," "engaging with," "connected to," "attached to," or "coupled to" another element or layer, the element or layer may be lying on, engaging with, connected to, or coupled to the other element or layer directly or through intervening elements or layers. Conversely, when an element is referred to as "lying directly on," "engaging with," "connected directly to," "attached directly to," or "coupled directly to" another element or layer, there shall be no intervening elements or layers.Other words used to describe the relationship between elements should be interpreted similarly (e.g., "between" versus "directly between," "adjacent" versus "directly adjacent," etc.). As used herein, the term "and / or" includes any combination and all combinations of one or more of the related listed elements.

[0053] Herein, exemplary embodiments of the present disclosure are explained in more detail with reference to the accompanying drawings. As used herein, when expressions such as "at least one of..." precede a list of items, they delimit the entire list of items and not an individual item within the list. For example, the expression "at least one of a, b, and c" is to be understood to include only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.

[0054] The terms used herein describe specific example configurations only and are not intended to be limiting. The singular articles "a," "an," and "the" as used herein may also include the plural forms unless the context clearly indicates otherwise. The terms "comprising," "including," and "having" are inclusive and thus specify the presence of a feature, step, operation, element, and / or component, but do not preclude the presence or addition of one or more additional features, steps, operations, elements, components, and / or combinations thereof.

[0055] Based on the above-described ideal embodiments according to the present invention, a person skilled in the art may make various changes and modifications based on the above description without departing from the technical concept of the present invention. The technical scope of the present invention is not limited to the content of the description and must be determined by the scope of the claims. QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] CN 202422007903.4

[0001] CN 202422205494.9

[0001]

Claims

[1] Swivel mechanism, characterized by that it includes: a base; a pivot support frame on the base and having a left support plate and a right support plate, wherein a suspension point A and a suspension point B are provided at both upper ends of the left and right support plates; two iron frame support frames, each arranged on an outer side of the left and right support plates and each comprising a first rocker arm and a second rocker arm; wherein the upper end of the first rocker arm and the second rocker arm are each hinged to the suspension point A and the suspension point B of the respective support plates, and the lower end of the first rocker arm and the second rocker arm are each hinged to a hinge point C and a hinge point D of a support element; and wherein at least one first iron frame connection point, which is arranged on a side of the articulation point C facing away from an iron frame leg, and at least one second iron frame connection point, which is arranged on a side of the articulation point D facing an iron frame backrest, are provided on the support element. [2] Swivel mechanism according to claim 1, characterized by , that the first rocker arm has a pivot angle of 10° to 55°; and that a straight-line distance between the suspension point A and the suspension point B is L1 and a straight-line distance between the joint point C and the joint point D is L2, where L1:L2 = (12 to 13):(10 to 12). [3] Swivel mechanism according to claim 1, characterized by , that when pivoting the support element, the first rocker arm pivots towards the side of the iron frame leg, the maximum angle formed by a line connecting the articulation point C and the articulation point D and the horizontal plane being α1; that the first rocker arm pivots towards the side of the iron frame backrest, the maximum angle formed by a line connecting the articulation point C and the articulation point D and the horizontal plane being α2; and where a straight line distance between the joint point C and the joint point D is L2; where α1: α2: L2 = (1° to -4°): (2° to 6°): (200 mm to 240 mm). [4] Swivel mechanism according to claim 1, characterized by , that a straight-line distance between the suspension point A and the suspension point B is L1, and a straight-line distance between the articulation point C and the articulation point D is L2, where L1:L2 = (240 to 260):(200 to 240); and that when the support element is pivoted there is a height difference between the highest and lowest positions of the articulation point CH1; where L1: L2: H1 = (240 to 260): (200 to 240): (2 to 25). [5] Swivel mechanism according to claim 1, characterized by , that a straight-line distance between the suspension point A and the suspension point B is L1, and a straight-line distance between the articulation point C and the articulation point D is L2, where L1:L2 = (240 to 260):(200 to 240); and that when pivoting the support element, a pivot value in the front-to-back direction for the joint point CL is; where L1: L2: L = (240 to 260): (200 to 240): (8 to 85). [6] Swivel mechanism according to claim 1, characterized by , that a straight-line distance between the suspension point A and the suspension point B is L1 and a straight-line distance between the articulation point C and the articulation point D is L2; and that the suspension point A and the suspension point B are approximately at the same height, whereby in a naturally hanging state of the supporting element the connecting line between the suspension point A or the suspension point B and the articulation point C or the articulation point D has a vertical distance of H; where L1: L2: H= (240 to 260): (200 to 240): (83 to 120). [7] Swivel mechanism according to claim 1, characterized by that it also includes: a drive mechanism, the drive end of which is hinged to a drive cross arm arranged between two iron frame support frames in order to drive the support element to pivot; wherein the drive cross arm is arranged between first rocker arms of the two iron frame support frames, and wherein a joint element is arranged between the drive cross arm and the drive end. [8] Swivel mechanism according to claim 1, characterized by that it also includes: a drive mechanism, the drive end of which is hinged to a drive cross arm arranged between two iron frame support frames in order to drive the support element to pivot; wherein the drive mechanism comprises a drive motor, a crank arm and an eccentric wheel; wherein one end of the crank arm serves as the drive end and the other end is rotatably connected to a drive shaft of the drive motor via the eccentric wheel, and an eccentricity of the eccentric wheel correlates positively with a swivel amplitude of the support element. [9] Swivel mechanism according to claim 8, characterized by , that the eccentricity is a; wherein when pivoting the support element, a height difference between the highest and the lowest position of the articulation point C in the support element is H1; where a:H1 = 1:(1 to 2). [10] Swivel mechanism according to claim 8, characterized by , that the eccentricity is a; wherein when pivoting the support element, a pivot value in the front-to-back direction for the joint point is CL; where a: L = 1:(3 to 5). [11] Swivel mechanism according to claim 1, characterized by that it also includes: a drive mechanism, the drive end of which is hinged to a drive cross arm arranged between two iron frame support frames in order to drive the support element to pivot; wherein the drive mechanism is a linear actuator, with an extended end of the linear actuator serving as the drive end; whereby a telescopic distance of the linear drive enables a pivoting angle of the first rocker arm of 10° to 55°. [12] Swivel mechanism, characterized by that it includes: a base; a pivot support frame on the base and having a left support plate and a right support plate, wherein a suspension point A and a suspension point B are provided symmetrically at both upper ends of the left and right support plates; two iron frame support frames, each arranged on an outer side of the left and right support plates and each comprising a first rocker arm and a second rocker arm; wherein the upper end of the first rocker arm and the second rocker arm are each hinged to the suspension point A and the suspension point B of the respective support plates, and the lower end of the first rocker arm and the second rocker arm are each hinged to a hinge point C and a hinge point D of a support element; wherein the first rocker arm has a pivot angle of 10° to 55°; and where a straight line distance between the suspension point A and the suspension point B is L1 and a straight line distance between the joint point C and the joint point D is L2, where L1:L2 = (240mm to 260mm):(200mm to 240mm). [13] Swivel mechanism according to claim 12, characterized by , that when the support element is pivoted, the first rocker arm pivots towards the side of an iron frame leg, the maximum angle formed by a connecting line between the articulation point C and the articulation point D and the horizontal plane being α1, and that the first rocker arm pivots towards the side of an iron frame backrest, the maximum angle formed by a connecting line between the articulation point C and the articulation point D and the horizontal plane being α2; wherein when the support element is pivoted, a height difference between the highest and the lowest position of the articulation point C is H1; wherein when the support element is pivoted, a pivot value in the front-to-back direction for the articulation point is CL; wherein the suspension point A and the suspension point B are approximately at the same height, wherein in a naturally hanging state of the support element, the connecting line between the suspension point A and the articulation point B isthe suspension point B and the articulation point C or the articulation point D have a vertical distance of H;. where: α1:α2:L2= (1° to -4°):(2° to 6°):(200mm to 240mm); or L1:L2:H1= (240 mm to 260 mm):(200 mm to 240 mm):(2 mm to 25 mm); or L1:L2:L= (240mm to 260mm):(200mm to 240mm):(8mm to 85mm); or L1:L2:H= (240mm to 260mm):(200mm to 240mm):(83mm to 120mm). [14] Swivel mechanism according to claim 12, characterized by , that the support element is driven by a drive mechanism for pivoting; wherein the drive mechanism comprises a drive motor, a crank arm and an eccentric wheel; wherein one end of the crank arm serves as the drive end and the other end is rotatably connected to a drive shaft of the drive motor via the eccentric wheel, and an eccentricity of the eccentric wheel correlates positively with a pivoting amplitude of the support element; or that the support element is driven to pivot by a drive mechanism; wherein the drive mechanism is a linear actuator, with an extended end of the linear actuator serving as the drive end; wherein a telescopic distance adjustment of the linear drive corresponds to a pivoting angle of the first rocker arm of 10° to 55°. [15] Swivel mechanism, characterized by that it includes: a left support plate and a right support plate, wherein a suspension point A and a suspension point B are provided at both upper ends of the left and right support plates; a first rocker arm and a second rocker arm, each corresponding to a support plate, which are hinged at their upper end to the suspension point A and the suspension point B, respectively, and at their lower end to a joint point C and a joint point D of a support element, respectively; wherein a linear distance between the suspension point A and the suspension point B is L1 and a linear distance between the joint point C and the joint point D is L2, where L1:L2 = (240 mm to 260 mm):(200 mm to 240 mm); and a drive mechanism that drives the first rocker arm and the second rocker arm so that that they pivot synchronously, with the pivot angle of the first rocker arm being 10° to 55°. [16] Swivel mechanism according to claim 15, characterized by , that when the support element is pivoted, the first rocker arm pivots towards the side of an iron frame leg, the maximum angle formed by a connecting line between the articulation point C and the articulation point D and the horizontal plane being α1, and that the first rocker arm pivots towards the side of an iron frame backrest, the maximum angle formed by a connecting line between the articulation point C and the articulation point D and the horizontal plane being α2; wherein when the support element is pivoted, a height difference between the highest and the lowest position of the articulation point C is H1; wherein when the support element is pivoted, a pivot value in the front-to-back direction for the articulation point is CL; wherein the suspension point A and the suspension point B are approximately at the same height, wherein in a naturally hanging state of the support element, the connecting line between the suspension point A and the articulation point B isthe suspension point B and the articulation point C or the articulation point D have a vertical distance of H;. where: α1:α2:L2= (1° to -4°):(2° to 6°):(200mm to 240mm); or L1:L2:H1= (240 mm to 260 mm):(200 mm to 240 mm):(2 mm to 25 mm); or L1:L2:L= (240mm to 260mm):(200mm to 240mm):(8mm to 85mm); or L1:L2:H= (240mm to 260mm):(200mm to 240mm):(83mm to 120mm). [17] Electric rocking chair, characterized by that it comprises: a swivel mechanism according to any one of claims 1 to 16; and a sofa iron frame arranged on the support member and comprising a left iron frame part and a right iron frame part, wherein a support end of the left iron frame part and the right iron frame part is each arranged on a corresponding support member.

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