Torque output structure of hinge of mobile terminal having inward-folding flexible screen

Abstract

A torque output structure of a hinge of a mobile terminal having an inward-folding flexible screen, comprising a first torque output mechanism and a second torque output mechanism. The first torque output mechanism provides a self-locking force and an automatic closing function of said mobile terminal in a range from a folded state to a first angle and a self-locking force and an automatic unfolding function of said mobile terminal in a range from a second angle to an unfolded state. The second torque output mechanism provides rotational resistance torque in a hovering working section from a certain angle from the folded state to a certain angle from the unfolded state of said mobile terminal, so that a hovering function of said mobile terminal is achieved; and when the inward-folding flexible screen is in the folded state and the unfolded state, an elastic part of the second torque output mechanism is in a free state. The structure provides good torque output, and the functional requirements of a rotating angle range and closing and unfolding stages of a hinge body are met.

Description

A torque output structure for the hinge of an inward-folding flexible screen mobile terminal Technical Field

[0001] The present invention relates to an inward-folding flexible screen mobile terminal, and in particular to a torque output structure used therein. The flexible screen mobile terminal may be a mobile phone, a laptop computer, etc. Background Art

[0002] For an inward-folding flexible screen mobile terminal, it includes a flexible screen arranged on the inside of the mobile terminal, a left shell and a right shell, and a hinge connecting the left shell and the right shell. A structure that provides torque output is provided in the hinge to realize operational feedback. Some customers may require that the inward-folding flexible screen mobile terminal has a self-locking force when it is in a folded state and a flattened state, and can automatically close and automatically flatten when it is close to the folded state and the flattened state, and provide a hovering function within the rotation angle range of the hinge body, that is, the function of stopping rotation at any time and positioning the current angle at any time. However, the current torque output structure often uses a single friction coil or a friction structure tightened by a disc spring, which makes it difficult to achieve both functions better, especially when the hinge of the flexible screen mobile terminal is made thinner and thinner.

[0003] Summary of the Invention

[0004] The purpose of the present invention is to provide a torque output structure for the hinge of an inward-folding flexible screen mobile terminal, which provides good torque output and meets the functional requirements of the hinge body rotation angle range and the closing and flattening stages. To this end, the present invention adopts the following technical solutions:

[0005] A torque output structure for a hinge of an inward-folding flexible screen mobile terminal, the hinge comprising a left-side motion mechanism, a right-side motion mechanism, and a central keel, wherein the left-side motion mechanism and the right-side motion mechanism are connected to a synchronous reverse motion connection structure, wherein a rotating connecting arm and a housing connecting member slidably connected to the rotating connecting arm are provided in the motion mechanism, wherein the left-side rotating connecting arm and the right-side rotating connecting arm are rotatably connected via a real axis and the central keel, respectively, and the sliding direction of the sliding connection is perpendicular to the real axis; and characterized in that:

[0006] The torque output structure includes a first torque output mechanism and a second torque output mechanism;

[0007] The first torque output mechanism provides the inward-folding flexible screen mobile terminal with a self-locking force and an automatic closing function when folded within a first angle range, and a self-locking force and an automatic flattening function within a second angle range and a flattening range;

[0008] The second torque output mechanism provides a rotational resistance torque in a hovering operation section between the flexible screen mobile terminal being folded at a certain angle and being flattened at a certain angle, thereby realizing a hovering function of the inward-folding flexible screen mobile terminal. In addition, the elastic component of the second torque output mechanism is in a free state when the inward-folding flexible screen is in a folded state and a flattened state.

[0009] Within the folding range to the first angle, the driving torque of the first torque output mechanism in the automatic folding direction is greater than the torque output by the second torque output mechanism; within the second angle to flattening range, the driving torque of the first torque output mechanism in the automatic flattening direction is greater than the torque output by the second torque output mechanism.

[0010] On the basis of adopting the above technical solutions, the present invention may also adopt the following further technical solutions at the same time, or use these further technical solutions in combination:

[0011] The second torque output mechanism outputs the rotational resistance torque between a first rotational angle and a second rotational angle.

[0012] The first torque output mechanism adopts a cam-matching friction structure, including a cam fixed on the middle keel and a matching structure arranged on the rotating connecting arm, and a spring that keeps the two closely matched.

[0013] The second torque output mechanism is a separate module in the hinge and is installed on the middle keel.

[0014] The module includes two shafts on the same axis as the two real shafts on the left and right sides, respectively. A plurality of disc springs are respectively sleeved on the two shafts as the elastic components. The second torque output mechanism is also provided with a plurality of friction connecting plates and friction pads. The module is also provided with connecting arms on the left and right sides respectively and respectively correspond to the sliding connection housing connectors. The friction connecting plates include a left friction connecting plate and a right friction connecting plate, which are respectively sleeved on the left and right shafts and respectively connected to the left connecting arm and the right connecting arm. The friction pads are simultaneously sleeved on the left and right shafts. The state of the elastic component is controlled by a cam structure.

[0015] The second torque output mechanism includes an axially movable clamping sleeve and a shaft, a diameter-reducing section is provided on the shaft, and the clamping sleeve rotates synchronously with the rotating connecting arm; the diameter-reducing section includes a high torque output section and small diameter sections located at both ends of the high torque output section, the high torque output section corresponds to the hovering working section, the diameter of the diameter-reducing section in the high torque output section is larger than the diameter of the small diameter section, and there is a smooth transition between the high torque output section and the small diameter section; a control mechanism is provided in the middle keel to cause axial sliding of the sleeve when it rotates.

[0016] A control mechanism is provided for the left and right motion mechanisms in the middle keel, so that the axial sliding structure generates axial sliding when rotating.

[0017] The control mechanism adopts a cam structure, and the cam structure is arranged around the axis of the axial sliding structure.

[0018] The synchronous reverse motion connection structure adopts an axial sliding synchronous reverse motion connection structure, and the control mechanism simultaneously controls the axial sliding of the sliding synchronous reverse motion connection structure; the cam structure on the left side of the middle keel and the cam structure on the right side are arranged oppositely, so that in the first axial direction, the synchronous reverse motion connection structure and the axial sliding structure generate a driving force through the cam structure on the left side when rotating, and generate a clearance distance through the cam structure on the right side; in the second axial direction, the synchronous reverse motion connection structure and the axial sliding structure generate a driving force through the cam structure on the right side, and generate a clearance distance through the cam structure on the left side; the first direction and the second direction are opposite.

[0019] The synchronous reverse motion connection structure comprises a left connection structure and a right connection structure, wherein the left connection structure and the right connection structure are respectively sleeved on the real shaft on the same side and are respectively connected to the clamping sleeve on the same side.

[0020] Due to the adoption of the technical solution of the present invention, the first torque output mechanism and the second torque output mechanism of the present invention can work separately and superimpose together without interference, and can provide torque that meets the requirements of self-locking and automatic reset closure and automatic reset flattening in the folded and flattened states within the angle range of the mobile terminal close to folding and the angle range of the mobile terminal close to flattening, respectively, without losing the self-locking and automatic reset functions due to too little force or requiring too much force to move the shell of the mobile terminal. At the same time, it can provide a hovering effect that meets the requirements during the hovering stage. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] FIG1 is a schematic diagram showing an embodiment of a hinge of the present invention viewed from top to bottom when a mobile terminal is in a flat state.

[0022] FIG2 is a schematic diagram of the embodiment shown in FIG1 viewed from bottom to top when the mobile terminal is in a flat state.

[0023] FIG. 3 is an exploded view of the module combined with the first torque output mechanism in the embodiment shown in FIG. 1 .

[0024] FIG. 4 is a schematic diagram of a module combined with a first torque output mechanism in the embodiment shown in FIG. 1 .

[0025] FIG5 is a schematic structural diagram of the hovering module in the embodiment shown in FIG1 .

[0026] Figure 6 is a diagram showing the working process of the hover module.

[0027] FIG7 is a diagram illustrating the working process of the module shown in FIG4 .

[0028] FIG8 is a schematic diagram of the connection structure of the hovering module shown in FIG5 .

[0029] FIG. 9 is a schematic diagram of another embodiment of the hinge of the present invention.

[0030] FIG10 is an exploded view of a portion of the structure of the embodiment shown in FIG9 .

[0031] FIG11 is a schematic diagram of the operation of the second torque output mechanism in the embodiment shown in FIG9 during the opening process (or closing process) of the mobile terminal. DETAILED DESCRIPTION

[0032] Refer to the accompanying drawings. The following first introduces that, in this embodiment, the torque output structure of the present invention is applied to a hinge of an inward-folding flexible screen mobile terminal, which includes a motion mechanism on the left and a motion mechanism on the right, a middle keel 300, and a synchronous reverse motion connection structure 4 is connected between the motion mechanism on the left and the motion mechanism on the right. A rotating connecting arm 1 and a housing connector 2 slidably connected to the rotating connecting arm 1 are provided in the motion mechanism. The middle keel is provided with a real axis 301 for the motion mechanism on the left and the motion mechanism on the right, respectively. The rotating connecting arm 1 is rotatably connected to the middle keel 300 through the real axis 301. The sliding direction of the sliding connection, that is, the sliding direction of the housing connector 2 is perpendicular to the real axis 301. The middle keel 300 can be a whole structure, or it can be composed of several sections connected together by connectors.

[0033] The axial positioning of the rotating connecting arm 1 can be achieved by limiting the portion 11 of the rotating connecting arm 1 inserted into the groove 304 formed in the bracket portion of the middle keel 300 for the real shaft 301 to pass through.

[0034] In order to further reduce the thickness of the inward-folding flexible screen mobile terminal, the central keel 300 does not use a virtual shaft structure for the connecting arm and the housing connector 2. Instead, the following structure is adopted, in which an axial sliding member 3 is provided (for example, the main body is in the shape of a block or plate, etc.). The axial sliding member 3 is rotatably connected to the central keel via a real axis. The real axis can be integral with the real axis 301 (in this embodiment, it is integral and numbered 301), or it can be divided into two sections. The axial sliding member 3 rotates synchronously with the rotating connecting arm 1, and the axial sliding member 3 can also slide axially along the real axis 301. A reversing structure is connected between the axial sliding member 3 and the housing connector 2.

[0035] The central keel 300 is provided with a control mechanism for the left and right motion mechanisms, so that the axial sliding structure generates axial sliding during rotation. The control mechanism adopts a cam structure, which is arranged around the axis of the axial sliding structure. The cam structure 61 on the left side of the central keel and the cam structure 62 on the right side are arranged oppositely. Not only are the cam surfaces oriented in opposite directions, but the engagement is also opposite. When the cam structure 61 on the left side engages in an ascending engagement, the cam structure 62 on the right side engages in a descending engagement with the same amplitude. Therefore, in the first axial direction, the synchronous reverse motion connection structure 4 and the axial sliding member 3 generate a driving force through the cam structure 61 on the left side and a clearance distance through the cam structure 62 on the right side when rotating. In the second axial direction, the synchronous reverse motion connection structure 4 and the axial sliding member 3 generate a driving force through the cam structure 62 on the right side and a clearance distance through the cam structure 61 on the left side. The first direction and the second direction are opposite. It is preferred to provide a corresponding matching structure 34 at the end of the sleeve of the axial sliding member 3 to match the cam structure 61 or cam structure 62 on the side. Alternatively, a synchronous reverse motion connection structure 4 can be used to match the cam structure, or a connecting component can be provided for matching.

[0036] In order to further thin the inward folding flexible screen mobile terminal, the synchronous reverse motion connection structure 4 (which can be a slider with a connection part) can be slidably connected to the middle keel 300, and the sliding direction is along the axial direction of the real axis 301. The synchronous reverse motion connection structure 4 is simultaneously sleeved on the real axis 301 of the left motion mechanism and the real axis 301 of the right motion mechanism, or is sleeved on another section of the real axis coaxial with the real axis 301. The synchronous reverse motion connection structure 4 is provided with a left connection structure 41 and a right connection structure 42. The left connection structure 41 and the right connection structure 42 are respectively connected to the axial sliding member 3 in the left motion mechanism and the axial sliding member 3 in the right motion mechanism. This can be that the axial sliding member 3 is provided with a groove 31, and the left connection structure 41 and the right connection structure 42 are stuck in the groove 31. In addition, other forms of abutting connection or connection with the aid of connecting parts can also be adopted.

[0037] The reversing mechanism can employ the following structure: it includes a connecting rod 5, whose ends are rotatably connected to the housing connector 2 and the axial slide 3, respectively. As shown in the figure, portion 33 is the portion on the axial slide 3 where the connecting rod 5 connects, and portion 21 is the portion on the housing connector 2 where the connecting rod 5 connects. Furthermore, the reversing mechanism can also include a track groove 32 on the axial slide, with the connecting rod 5 being provided with a pin that engages with the track groove 32.

[0038] The torque output structure of the present invention includes a first torque output mechanism and a second torque output mechanism;

[0039] The first torque output mechanism provides the inward-folding flexible screen mobile terminal with a self-locking force and an automatic closing function when folded to a first angle (35° in this embodiment), and a self-locking force and an automatic flattening function when folded to a second angle (155° in this embodiment).

[0040] The second torque output mechanism provides a rotational resistance torque in a hovering operation section between a certain angle (in this embodiment, the angle close to folding is 20°) and a certain angle (in this embodiment, the angle close to flattening is 150°) away from the flexible screen mobile terminal to realize the hovering function of the inward-folding flexible screen mobile terminal. In addition, when the inward-folding flexible screen is in the folded state and the flattened state, the elastic component 72 of the second torque output mechanism is in a free state.

[0041] Within the folding range to the first angle, the driving torque of the first torque output mechanism in the automatic folding direction is greater than the torque output by the second torque output mechanism; within the second angle to flattening range, the driving torque of the first torque output mechanism in the automatic flattening direction is greater than the torque output by the second torque output mechanism.

[0042] Through the cooperation of the first torque output mechanism and the second torque output mechanism, it is possible to provide a hovering function and a suitable locking force when folding and flattening, and avoid the sense of frustration when switching between different rotation resistance mechanisms.

[0043] The first torque output mechanism can employ a cam-coupling friction structure, comprising a cam 711 fixed to the central keel, a cooperating structure 712 provided on the rotating connecting arm 1, and a spring 713 to maintain a tight fit between the two. The spring 713 can be a wire spring. The first rotational resistance mechanism is sleeved on a shaft, which can be integral with the real shaft 301 (in this embodiment, it is integral and is labeled 301), or divided into two sections.

[0044] In the embodiment shown in FIG1 , the second torque output mechanism is a separate module 103 in the hinge, which is installed on the middle keel. The middle keel can be an integral part of the aforementioned middle keel 300, or it can be two separate parts connected together by a connecting component. The module 103 includes two shafts 721 on the same axis as the two real shafts 301 on the left and right sides, respectively. The two shafts 721 are respectively provided with a plurality of disc springs, which serve as the elastic components 72. The second rotation resistance mechanism is also provided with a plurality of friction connecting plates 722 and friction pads 723, which provide rotation resistance through the friction between them. The separate module is also provided with connecting arms 724 on the left and right sides, respectively, and housing connectors 2A are respectively provided. The housing connector 2A can be integral with the aforementioned housing connector 2, or it can be provided as a separate part. It is separate and effectively becomes a single unit through connection with the mobile terminal housing. The housing connector 2A on the same side is slidably connected to the connecting arm 724 on the same side. The left and right connecting arms 724 rotate synchronously with the left and right rotating connecting arms 1, respectively. The friction connecting plate 722 includes a left friction connecting plate and a right friction connecting plate, which are respectively mounted on the left and right shafts 721 and connected to the left and right connecting arms 724, respectively. The friction pad 723 is mounted on both the left and right shafts 721. The state of the elastic member 72 is controlled by a cam structure, which provides a length of space on the shaft 721 that is greater than the required length for the disc spring in its free state. When in the state between folding and folding, and between flattening and flattening, the cam structure forms a valley-to-peak engagement, and the disc spring 72 is free and uncompressed. The cam structure can be composed of a cam 725 and a cam-cooperating mechanism located on the shaft sleeve 726 of the connecting arm 724.

[0045] The second torque output mechanism can also be implemented by using a combination of a rolled and a non-round shaft. The first torque output mechanism can also be implemented by using a combination of a rolled and a non-round shaft.

[0046] The inward-folding flexible screen mobile terminal used in the present invention is provided with a flexible screen arranged on the inner side of the mobile terminal, a left shell and a right shell, and a hinge connecting the left shell and the right shell, and the hinge adopts the above-mentioned hinge. The hinge can be composed of a plurality of modules, among which there are a connection and synchronization module and a hovering module (i.e., the module 103 that plays the above-mentioned role). The connection and synchronization modules can be provided in a group at each end, respectively labeled 101 and 102, and the hovering module is provided between the two modules. The connection and synchronization modules are both provided with the above-mentioned rotating connecting arm 1, the housing connecting part 2, the axial sliding part 3, the reversing structure and the synchronous reverse motion connecting structure 4, and a first torque output mechanism is provided. The second torque output mechanism can also be combined in the following modules 101 and 102, and the first torque output mechanism is provided in the module 103.

[0047] 9-11 , the second torque output mechanism may also adopt the following implementation manner: comprising an axially movable clamping sleeve 73 and a shaft, a reducing section being provided on the shaft, the clamping sleeve 73 rotating synchronously with the rotating connecting arm 1; the reducing section comprising a high torque output section 303 and small diameter sections 302 located at both ends of the high torque output section 303, the high torque output section 303 corresponding to the hovering working section, the diameter of the reducing section in the high torque output section is larger than the diameter of the small diameter section, and there is a smooth transition between the high torque output section 303 and the small diameter section 302; in the small diameter section, the clamping sleeve 73 may just fit with the shaft clearance and is basically not deformed, while in the high torque output section 303, the clamping sleeve 73 is interference fit with it, the clamping sleeve 73 is in a large elastic deformation, and the shaft on which the reducing section is provided may be the real shaft 301B on the same side.

[0048] The clamping sleeve 73 can be combined with the axial sliding member 3B to serve as a sleeve connecting the axial sliding structure to the real shaft. With the axial sliding member serving as a connecting arm, the aforementioned control mechanism can simultaneously control the axial sliding generated by the rotation of the axial sliding structure and the axial sliding of the clamping sleeve 73. In the aforementioned embodiment, the mating structure 34 provided at the end of the sleeve of the axial sliding member 3 can also be provided at the end of the clamping sleeve 73.

[0049] In the present invention, the real shaft 301 and the middle keel 300 can be fixedly connected so that the shaft cannot rotate or rotatably connected, and fixed connection is preferred.

[0050] In addition, the structure of the present invention can also be applied to the hinge between the connecting arm of the middle keel 300 with a virtual rotating shaft structure and the casing connecting part 2. This only requires separately configuring the connecting arm of the second torque output mechanism so that it is slidably connected to the casing connecting part (or casing).

[0051] The above description is only a specific embodiment of the present invention, but the structural features of the present invention are not limited thereto. Any changes or modifications made by any technician in this field within the field of the present invention are included in the protection scope of the present invention.

[0052] It should be noted that the terms "including" and "having" and any variations thereof in the specification and claims of the present invention and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "installed", "set", "provided with", "connected", "connected", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0053] In the description of the present invention, it should be understood that terms such as "one end," "the other end," "outer side," "inner side," "horizontal," "end," "length," "outer end," "left," and "right" indicate positions or locations based on those shown in the accompanying drawings. These terms are intended solely to facilitate and simplify the description of the present invention and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. The terms "first" and "second" are used solely for brevity and are not intended to indicate or imply relative importance.

Claims

1. A torque output structure of an inward folding flexible screen mobile terminal hinge, the hinge comprising a left motion mechanism and a right motion mechanism, and a middle keel, the left motion mechanism and the right motion mechanism are connected with a synchronous reverse motion connection structure, a rotating connecting arm and a housing connecting member slidably connected to the rotating connecting arm are provided in the motion mechanism, the left rotating connecting arm and the right rotating connecting arm are rotatably connected through a real axis and the middle keel respectively, and the sliding direction of the sliding connection is perpendicular to the real axis; characterized in that: The torque output structure includes a first torque output mechanism and a second torque output mechanism; The first torque output mechanism provides the inward-folding flexible screen mobile terminal with a self-locking force and an automatic closing function when folded within a first angle range, and a self-locking force and an automatic flattening function within a second angle range and within a flattening range; The second torque output mechanism provides a rotational resistance torque in a hovering working section between the flexible screen mobile terminal being folded at a certain angle and being flattened at a certain angle, thereby realizing a hovering function of the inward-folding flexible screen mobile terminal, and the elastic component of the second torque output mechanism is in a free state when the inward-folding flexible screen is in a folded state and a flattened state; In the folding range to the first angle, the driving torque of the first torque output mechanism in the automatic folding direction is greater than the torque output by the second torque output mechanism; in the flattening range from the second angle, the driving torque of the first torque output mechanism in the automatic flattening direction is greater than the torque output by the second torque output mechanism.

2. The torque output structure of the hinge of the inward folding flexible screen mobile terminal according to claim 1, characterized in that The second torque output mechanism outputs the rotational resistance torque between a first rotational angle and a second rotational angle.

3. The torque output structure of the hinge of the inward folding flexible screen mobile terminal according to claim 1, characterized in that The first torque output mechanism adopts a cam-matching friction structure, including a cam fixed on the middle keel and a matching structure arranged on the rotating connecting arm, and a spring to keep the two closely matched.

4. The torque output structure of the hinge of the inward folding flexible screen mobile terminal according to claim 1, characterized in that The second torque output mechanism is a separate module in the hinge and is installed on the middle keel.

5. The torque output structure of the hinge of the inward folding flexible screen mobile terminal according to claim 4, characterized in that The module includes two shafts on the same axis as the two real shafts on the left and right sides, and a plurality of disc springs are respectively sleeved on the two shafts as the elastic components. The second torque output mechanism is also provided with a plurality of friction connecting plates and friction pads. The module is also provided with connecting arms on the left and right sides respectively and respectively correspond to the sliding connection housing connecting parts. The friction connecting plates include friction connecting plates on the left and right sides, which are respectively sleeved on the shafts on the left and right sides and are respectively connected to the connecting arms on the left and right sides. The friction pads are simultaneously sleeved on the shafts on the left and right sides, and the state of the elastic component is controlled by the cam structure.

6. The torque output structure of the hinge of the inward folding flexible screen mobile terminal according to claim 1, characterized in that The second torque output mechanism comprises an axially movable clamping sleeve and a shaft, a diameter-reducing section is arranged on the shaft, and the clamping sleeve rotates synchronously with the rotating connecting arm; the diameter-reducing section comprises a high torque output section and small diameter sections located at both ends of the high torque output section, the high torque output section corresponds to the hovering working section, the diameter of the diameter-reducing section in the high torque output section is larger than the diameter of the small diameter section, and there is a smooth transition between the high torque output section and the small diameter section; A control mechanism is arranged in the middle keel to enable the shaft sleeve to slide axially when it rotates.

7. The torque output structure of the hinge of the inward folding flexible screen mobile terminal according to claim 6, characterized in that A control mechanism is provided for the left movement mechanism and the right movement mechanism in the middle keel, so that the axial sliding structure generates axial sliding when rotating.

8. The torque output structure of the hinge of the inward folding flexible screen mobile terminal according to claim 7, characterized in that The control mechanism adopts a cam structure, and the cam structure is arranged around the axis of the axial sliding structure.

9. The torque output structure of the hinge of the inward folding flexible screen mobile terminal according to claim 8, characterized in that The synchronous reverse motion connection structure adopts an axial sliding synchronous reverse motion connection structure, and the control mechanism simultaneously controls the axial sliding of the sliding synchronous reverse motion connection structure; The cam structure on the left side of the middle keel is arranged opposite to the cam structure on the right side, so that in the first axial direction, the synchronous reverse motion connection structure and the axial sliding structure generate a driving force through the cam structure on the left side when rotating, and generate a clearance distance through the cam structure on the right side; in the second axial direction, the synchronous reverse motion connection structure and the axial sliding structure generate a driving force through the cam structure on the right side, and generate a clearance distance through the cam structure on the left side. The cam structure on the side generates a clearance distance; the first direction and the second direction are opposite.

10. The torque output structure of the hinge of the inward folding flexible screen mobile terminal according to claim 9, characterized in that The synchronous reverse motion connection structure comprises a left connection structure and a right connection structure, wherein the left connection structure and the right connection structure are respectively sleeved on the real shaft on the same side and are respectively connected to the clamping sleeve on the same side.

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