Opening and closing connecting mechanism, handrail box and automobile

Abstract

This invention provides an opening and closing connection mechanism, a center console, and an automobile, relating to the field of automotive parts technology. The mechanism includes two transmission components respectively corresponding to two opening and closing elements, which are distributed along a first direction and are closably mounted on a base. Each transmission component includes a transmission wheel and a connecting rod. The two transmission wheels and two connecting rods of the two transmission components are symmetrically arranged along the first direction. The two transmission wheels are rotatably mounted on the base and are connected in a transmission manner with opposite rotation directions. The connecting rod is disposed between the corresponding transmission wheel and the opening / closing element. The connecting rod has a first end close to the corresponding opening / closing element and a second end opposite to the first end. The first end of the connecting rod is used to rotate around a first axis, and the first axis is used to rotate around a fixed axis under the drive of the corresponding opening / closing element. The second end of the connecting rod is rotatably connected to the corresponding transmission wheel around a second axis. The fixed axis, the first axis, the second axis, and the axle of the transmission wheel are parallel to each other.

Description

Technical Field

[0001] This invention relates to the field of automotive parts technology, and more specifically, to an opening and closing connection mechanism, a center console, and an automobile. Background Technology

[0002] Cars are generally equipped with an armrest box, located between the two seats, which provides elbow support for drivers and passengers, improving comfort. Armrest boxes can be single-opening or double-opening. Single-opening armrests include rear-folding armrests, while double-opening armrests include split-opening armrests. Split-opening armrests have two armrests, one on each side, which are rotatably connected to the left and right ends of an armrest mounting base. A locking mechanism and a reset mechanism, such as a return spring, are installed between the armrests and the base. Due to time differences in the unlocking of the locking mechanism and variations in the performance of the return springs, the two armrests may open at different times when the user opens the armrest box, affecting the user experience. Summary of the Invention

[0003] The present invention aims to solve, to some extent, the problem of how to improve the synchronization when two opening and closing parts are opened simultaneously in related technologies.

[0004] To at least partially address at least one aspect of the aforementioned problems, in a first aspect, the present invention provides an opening and closing connection mechanism, comprising a transmission assembly, two transmission assemblies respectively configured to correspond to two opening and closing elements, the two opening and closing elements being distributed along a first direction and closably mounted on a base; each transmission assembly includes a transmission wheel and a connecting rod, the two transmission wheels and the two connecting rods of the two transmission assemblies being symmetrically arranged in the first direction, the two transmission wheels being rotatably mounted on the base, the two transmission wheels being drively connected and rotating in opposite directions;

[0005] The connecting rod is disposed between the corresponding transmission wheel and the opening / closing member. The connecting rod has a first end disposed near the corresponding opening / closing member and a second end disposed opposite to the first end. The first end of the connecting rod is used to rotate around a first axis, and the first axis is used to rotate around a fixed axis under the drive of the corresponding opening / closing member. The second end of the connecting rod is rotatably connected to the corresponding transmission wheel around a second axis. The fixed axis, the first axis, the second axis, and the axle of the transmission wheel are parallel to each other.

[0006] Optionally, the transmission wheel is a gear, and two gears mesh with each other; or, the transmission wheel is a friction wheel, and two friction wheels contact each other.

[0007] Optionally, the two opening and closing components are rotatably connected to the base via two rotating shafts, the plane of symmetry of the two transmission wheels is the plane of symmetry of the two rotating shafts, and the fixed axis is the rotating shaft of the corresponding opening and closing component.

[0008] Optionally, the base includes an end frame located at one end of the axial direction of the rotating shaft, and the transmission wheel is mounted on the outer side of the end frame along the axial direction of the rotating shaft via the wheel axle;

[0009] And / or, at least one of the first shafts is mounted on the corresponding opening / closing element;

[0010] And / or, the transmission assembly further includes a rocker arm, at least one first shaft is correspondingly provided with the rocker arm, one end of the rocker arm is connected to the first end of the connecting rod through the corresponding first shaft, and the other end of the rocker arm is fixedly connected to the corresponding rotating shaft and the opening and closing member;

[0011] When the base includes the end frame and the first shaft is mounted on the corresponding opening and closing member, the end frame is provided with a guide groove coaxial with the rotating shaft corresponding to the first shaft. The first shaft passes through the guide groove and is connected to the first end of the connecting rod. The first shaft is slidably and rotatably connected relative to the guide groove.

[0012] When the base includes the end frame and the transmission assembly includes the swing arm, one end of the rotating shaft corresponding to the swing arm is fixedly connected to the opening and closing member, and the other end passes through the end frame and is fixedly connected to the swing arm.

[0013] Optionally, the transmission wheel is coaxially provided with an arcuate guide groove extending in the circumferential direction. Along the circumferential direction of the transmission wheel, the arcuate guide groove has a first groove end and a second groove end. The second end of the connecting rod is slidably and rotatably connected to the arcuate guide groove through the second shaft.

[0014] When both opening and closing components are in the closed state, the second shaft is located at the first groove end of the corresponding arc guide groove;

[0015] When both opening and closing components are in the closed state, and only one of the opening and closing components moves open, the connecting rod corresponding to the opening and closing component that moves open is linked, and the linked connecting rod keeps the corresponding second shaft at the first groove end and drives the corresponding transmission wheel to rotate in a set direction. The set direction is the direction in which the arc guide groove extends from the second groove end to the first groove end. The two transmission wheels rotate synchronously, keeping the connecting rod corresponding to the opening and closing component in the closed state stationary. The stationary connecting rod moves relative to the corresponding transmission wheel, and causes the corresponding second shaft to move from the first groove end to the second groove end within the corresponding arc guide groove.

[0016] Optionally, when the opening and closing member is in any position, the axis of the corresponding second shaft is located on the same side of the first plane determined by the axis of the corresponding first shaft and the axis of the wheel axle;

[0017] And / or, the arc guide groove has a limiting protrusion on its inner wall at the first groove end. When the second shaft is located at the first groove end, the limiting protrusion abuts against the second shaft, restricting the second shaft from moving along the arc guide groove toward the second groove end and away from the first groove end.

[0018] Optionally, a locking assembly is provided between the base and the opening / closing member, the locking assembly realizing the locking or unlocking of the two opening / closing members;

[0019] And / or, a reset member is provided between the opening / closing member and the base, the reset member being used to drive the opening / closing member to open.

[0020] Optionally, the locking assembly includes two locking structures and two lock hole structures. One of the base and the opening / closing member is provided with the locking structure, and the other of the base and the opening / closing member is provided with the lock hole structure. The opening / closing member is locked in the closed state through the connection between the locking structure and the lock hole structure.

[0021] And / or, the latch assembly includes two unlocking components, which are located on the base and at one end of the opening / closing member along the length direction. The two unlocking components are arranged adjacent to each other and are used to unlock the two opening / closing members respectively.

[0022] In a second aspect, the present invention provides an armrest box, comprising two opening and closing members for forming an armrest, a base for forming a box body, and an opening and closing connection mechanism as described in the first aspect above. The two opening and closing members are distributed along a first direction and are openably and closably mounted on the base. The two transmission components of the opening and closing connection mechanism are provided corresponding to the two opening and closing members.

[0023] Thirdly, the present invention provides an automobile that includes the armrest box as described in the second aspect above.

[0024] Compared to existing technologies, in the opening and closing connection mechanism, armrest box, and automobile of this invention, transmission components are respectively provided for the two opening and closing parts. Each transmission component includes a transmission wheel and a connecting rod. The first end of the connecting rod is configured to rotate around a first axis. The first axis is configured to rotate around a fixed axis under the drive of the corresponding opening and closing part. The first end of the connecting rod is configured to connect to the transmission wheel around a second axis. Since the fixed axis, the first axis, the second axis, and the axle of the transmission wheel are parallel to each other, the portion between the fixed axis and the first axis can be considered as a first connecting rod, and the portion between the axle of the transmission wheel and the second axis can be considered as a second connecting rod. The connecting rod is located between the first and second connecting rods. The portion between the fixed axis and the axle of the transmission wheel forms a fixed connecting rod. The first connecting rod, the connecting rod, the second connecting rod, and the fixed connecting rod together form a four-bar linkage structure. When the opening and closing part performs an opening movement, the corresponding first connecting rod is the driving rod. For any opening position of the opening and closing part, the first connecting rod has a corresponding position, thereby enabling the second... Each connecting rod has a corresponding position, and each corresponding transmission wheel has a corresponding rotational position. Since the movement strokes of the two opening and closing parts are symmetrical, the two transmission wheels and two connecting rods of the two transmission components are also symmetrically arranged. The two transmission wheels are configured to be connected in transmission, and their rotation directions are opposite during transmission. Thus, when the two opening and closing parts are opened simultaneously, the opening motion of the two opening and closing parts is transmitted to the two transmission wheels respectively. The two transmission wheels have a tendency to rotate in opposite directions. At this time, since the two transmission wheels are connected in transmission, the force is transmitted between the two transmission wheels. If the opening speeds of the two opening and closing parts are not consistent, under the resistance of the force transmitted by the two transmission wheels, the rotational speeds of the two transmission wheels in opposite directions remain consistent. This can eliminate the inconsistency of motion caused by the simultaneous opening of the two opening and closing parts to a certain extent, and improve the consistency of the simultaneous opening of the two opening and closing parts. Furthermore, the power transmission from the first shaft to the transmission wheel is realized through the connecting rod in this process. The connecting rod transmission structure is simple, easy to implement, and low in cost. When the opening and closing mechanism is used in the armrest box, for example, when the two opening and closing parts are the left armrest and the right armrest of the armrest box respectively, and the base is set on the body of the armrest box, during the process of opening the left armrest and the right armrest simultaneously, for example, after the left armrest and the right armrest are unlocked, the left armrest and the right armrest are opened respectively by the action of the reset part, such as the reset spring. At this time, the opening movement of the left armrest is transmitted to the left drive wheel, and the opening movement of the right armrest is transmitted to the right drive wheel. Since the left drive wheel and the right drive wheel are connected by transmission, the asynchrony of the opening movements of the left armrest and the right armrest can be eliminated to a certain extent. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the opening and closing connection mechanism used in the armrest box in an embodiment of the present invention;

[0026] Figure 2 This is a schematic diagram of the armrest box structure when both the left and right armrests are in the closed state in an embodiment of the present invention;

[0027] Figure 3 This is a schematic diagram of the armrest box in an embodiment of the present invention, where both the left and right armrests are in the open limit position;

[0028] Figure 4 This is a schematic diagram of the armrest box structure when the left armrest is in the open limit position and the right armrest is in the closed state in an embodiment of the present invention;

[0029] Figure 5 for Figure 3 Another structural diagram of the armrest box shown;

[0030] Figure 6 This is a schematic diagram of a structure in an embodiment of the present invention, showing a reset component provided on the base;

[0031] Figure 7 This is a schematic diagram of the specific structure of the locking structure in an embodiment of the present invention;

[0032] Figure 8 This is a schematic diagram of the transmission component including a rocker arm in another embodiment of the present invention.

[0033] Explanation of reference numerals in the attached figures:

[0034] 10-Drive wheel; 10L-Left drive wheel; 10R-Right drive wheel; 11-Axle; 11L-Left axle; 11R-Right axle; 12-Circular arc guide groove; 13-First groove end; 14-Second groove end; 20-Connecting rod; 20L-Left connecting rod; 20R-Right connecting rod; 21-First shaft; 21L-Left first shaft; 21R-Right first shaft; 22-Second shaft; 22L-Left second shaft; 22R-Right second shaft; 30-Opening / closing element; 30L-Left... Handrail; 30R-Right handrail; 40-Base; 41-End frame; 42-Side frame; 43-Guide groove; 50-Swing arm; 50L-Left swing arm; 50R-Right swing arm; 60-Fixed axis; 61L-Left pivot; 61R-Right pivot; 70-Lock assembly; 71-Lock structure; 711-Lock tongue; 712-Mounting bracket; 713-Converter; 714-Unlocking component; 715-First spring; 80-Reset component; S1-First plane. Detailed Implementation

[0035] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0036] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0037] In the description of this specification, the references to terms such as "embodiment," "one embodiment," "some implementations," "exemplary," and "one implementation," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or implementation is included in at least one embodiment or implementation of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or implementation. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or implementations.

[0038] The terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature.

[0039] In the attached figures, the Z-axis represents the vertical direction, i.e., the up-down position, with the positive direction of the Z-axis (i.e., the direction the arrow points) indicating up and the negative direction indicating down. The X-axis represents the horizontal direction and is designated as the left-right position, with the positive direction of the X-axis (i.e., the direction the arrow points) indicating the right side and the negative direction indicating the left side. The Y-axis represents the front-back position, with the positive direction of the Y-axis (i.e., the direction the arrow points) indicating the front and the negative direction indicating the back. It should be noted that the aforementioned representations of the Z, Y, and X axes are merely for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on the invention.

[0040] like Figure 1 As shown, this embodiment of the invention provides an opening and closing connection mechanism, including two transmission components. The two transmission components are respectively configured to correspond to two opening and closing elements 30. The two opening and closing elements 30 are distributed along a first direction and are openably and closably mounted on a base 40.

[0041] The transmission assembly includes a transmission wheel 10 and a connecting rod 20. The two transmission wheels 10 and the two connecting rods 20 of the two transmission assemblies are symmetrically arranged in a first direction (e.g., symmetrically arranged about a first symmetrical plane). The two transmission wheels 10 are rotatably mounted on the base 40. The two transmission wheels 10 are connected in transmission and rotate in opposite directions.

[0042] The connecting rod 20 is disposed between the corresponding transmission wheel 10 and the opening / closing member 30. The connecting rod 20 has a first end disposed near the corresponding opening / closing member 30 and a second end disposed opposite to the first end. The first end of the connecting rod 20 is used to rotate around the first shaft 21, and the first shaft 21 is used to rotate around the fixed shaft 60 under the drive of the corresponding opening / closing member 30. The second end of the connecting rod 20 is rotatably connected to the corresponding transmission wheel 10 around the second shaft 22. The fixed shaft 60, the first shaft 21, the second shaft 22 and the wheel axle 11 of the transmission wheel 10 are parallel to each other.

[0043] When the two opening and closing parts 30 open simultaneously, the two opening and closing parts 30 respectively drive the corresponding first shaft 21 to rotate around the corresponding fixed shaft 60. The connecting rod 20 is used to rotate around the corresponding first shaft 21 and second shaft 22 respectively, and drive the corresponding transmission wheel 10 to rotate.

[0044] It should be noted that in this specification, the invention will be illustrated using the example of two opening and closing components 30, namely the left armrest 30L and the right armrest 30R of the armrest box, which are rotatably connected to the base 40 via their respective pivots (specifically, the left pivot 61L and the right pivot 61R), with the base 40 mounted on the armrest box body. In this case, the first plane of symmetry can be the plane of symmetry of the axes of the pivots of the left armrest 30L and the right armrest 30R, that is, the first plane of symmetry is parallel to the YZ plane. However, it should be understood that this is not a limitation without violating the design concept of the invention. The opening and closing connection mechanism can also be used in other situations. For example, the two opening and closing components 30 can be two covers of other components with storage functions, which will not be described in detail later. When the opening and closing components 30 are closed, they cover the accommodating space formed in the base 40, and the opening and closing components 30 are approximately parallel to the horizontal plane. The opening and closing movement of the opening and closing components 30 is an upward flip. It should be understood that the left armrest 30L and the right armrest 30R can be set to armrests with exactly the same width or armrests with different widths. Generally, it is sufficient for their opening movement to be configured to be the same.

[0045] For example, 2 to Figure 5 As shown, the two transmission components are the left transmission component and the right transmission component. The transmission wheel 10, connecting rod 20, first shaft 21, second shaft 22 and wheel axle 11 of the left transmission component are, respectively, the left transmission wheel 10L, left connecting rod 20L, left first shaft 21L, left second shaft 22L and left wheel axle 11L. The transmission wheel 10, connecting rod 20, first shaft 21, second shaft 22 and wheel axle 11 of the right transmission component are, respectively, the right transmission wheel 10R, right connecting rod 20R, right first shaft 21R, right second shaft 22R and right wheel axle 11R.

[0046] Taking the opening motion of the left armrest 30L as an example, as the left armrest 30L rotates, the first shaft 21 rotates around the corresponding fixed axis 60. That is, the left armrest 30L will drive its corresponding left first shaft 21L to move. At this time, for any position of the left armrest 30L, this left first shaft 21L has a position relative to the corresponding fixed axis 60, and the left connecting rod 20L has a position relative to the base 40. For ease of understanding, the part between this left first shaft 21L and the fixed axis 60 can be understood as a connecting rod. The corresponding second shaft 22 (i.e., the left second shaft 21L) The portion between shaft 22L and the wheel axle 11 of the left drive wheel 10L (i.e., left wheel axle 11L) can also be regarded as a connecting rod. The left connecting rod 20L is located between these two connecting rods. The portion between the fixed shaft 60 and the wheel axle 11 of the left drive wheel 10L (i.e., left wheel axle 11L) can be regarded as a fixed connecting rod. Thus, a four-bar linkage is formed between the left connecting rod 20L, the left drive wheel 10L, the base 40 and the corresponding fixed shaft 60. Corresponding to any open position of the left armrest 30L, the four-bar linkage has a corresponding position and posture.

[0047] Two drive wheels 10 are connected by a transmission mechanism. In the absence of other interfering factors, when one drive wheel 10 rotates, the other drive wheel 10 also rotates, allowing the two drive wheels 10 to rotate synchronously in opposite directions. When both the left armrest 30L and the right armrest 30R are opening, the left drive wheel 10L and the right drive wheel 10R rotate in opposite directions and transmit force. The left drive wheel 10L, to a certain extent, hinders the rotation of the right drive wheel 10R, and the right drive wheel 10R, to a certain extent, hinders the rotation of the left drive wheel 10L, thus making the opening movements of the left armrest 30L and the right armrest 30R tend to be synchronized.

[0048] In the alternative scheme where the opening / closing component 30 drives the corresponding first shaft 21 to rotate around the fixed axis 60, the fixed axis 60 is the rotating shaft of the corresponding opening / closing component 30. That is, the fixed axis 60 corresponding to the left transmission component is the rotating shaft of the left armrest 30L, i.e., the left rotating shaft 61L, and the fixed axis 60 corresponding to the right transmission component is the rotating shaft of the right armrest 30R, i.e., the right rotating shaft 61R.

[0049] Taking the left drive assembly and left handrail 30L as an example, during the process of the left handrail 30L rotating to the left and opening, the left handrail 30L drives the first shaft 21 (specifically the left first shaft 21L) to perform circular motion around the left rotation shaft 61L. The structure is simple and practical, simplifying the possible connection structure between the first shaft 21 (specifically the left first shaft 21L) and the left handrail 30L. This case will be used as an example for further explanation.

[0050] The first end of the left connecting rod 20L (the left end in the diagram) rotates around the pivot of the left armrest 30L (specifically, the left pivot 61L) and around the first axis 21 (specifically, the left first axis 21L). The left connecting rod 20L drives the left transmission wheel 10L to rotate, and the left connecting rod 20L rotates relative to the left transmission wheel 10L around the second axis 22 (specifically, the left second axis 22L). At this time, the left wheel axle 11L of the left transmission wheel 10L, the left first axis 21L, the left second axis 22L, and the left pivot 61L of the left armrest 30L are parallel to each other, and each axis extends along the Y-axis direction in the diagram. At this time, for any opening angle of the left armrest 30L, the left first axis 21L has a position relative to the fixed axis 60 (specifically, the left wheel axle 11L), and the left connecting rod 20L has a position relative to the base 40, so that the left transmission wheel 10L has a definite rotation angle. The opening movement of the right armrest 30R is similar and will not be described in detail here.

[0051] Thus, in this embodiment, transmission components are respectively provided for the two opening / closing members 30. Each transmission component includes a transmission wheel 10 and a connecting rod 20. The first end of the connecting rod 20 is configured to rotate around a first shaft 21. The first shaft 21 is configured to rotate around a fixed shaft 60 under the drive of the corresponding opening / closing member 30. The first end of the connecting rod 20 is configured to connect to the transmission wheel 10 around a second shaft 22. Since the fixed shaft 60, the first shaft 21, the second shaft 22, and the axle 11 of the transmission wheel 10 are parallel to each other, the portion between the fixed shaft 60 and the first shaft 21 can be considered as the first... The link between the axle 11 of the transmission wheel 10 and the second shaft 22 can be considered as the second link. The connecting rod 20 is located between the first and second links. The portion between the fixed shaft 60 and the axle 11 of the transmission wheel 10 forms a fixed link. The first link, connecting rod 20, second link, and fixed link together form a four-bar linkage. When the opening / closing member 30 moves open, the corresponding first link becomes the driving link. For any opening position of the opening / closing member 30, the first link has a corresponding position, and thus the second link also has a corresponding position. Each transmission wheel 10 has a corresponding rotational position. Since the strokes of the two opening / closing elements 30 are symmetrical (their strokes being the same does not necessarily mean their widths must be the same), the two transmission wheels 10 and two connecting rods 20 of the two transmission components are also symmetrically arranged. The two transmission wheels 10 are configured for transmission connection, and their rotation directions are opposite during transmission. Therefore, when both opening / closing elements 30 are opened simultaneously, the opening motion of the two opening / closing elements 30 is transmitted to the two transmission wheels 10 respectively, and both transmission wheels 10 have a tendency to rotate in opposite directions. At this time, Since the two transmission wheels 10 are connected by a transmission, and the force is transmitted between the two transmission wheels 10, if the opening speeds of the two opening and closing parts 30 are inconsistent, the rotational speeds of the two transmission wheels 10 in opposite directions are kept consistent under the resistance of the force transmitted by the two transmission wheels 10. This can eliminate the inconsistency in motion caused by the simultaneous opening of the two opening and closing parts 30 to a certain extent, and improve the consistency of the simultaneous opening of the two opening and closing parts 30. In addition, the power transmission from the first shaft 21 to the transmission wheel 10 is realized through the connecting rod 20 in this process. The linkage transmission structure is simple, easy to implement and low in cost. When the opening and closing connection mechanism is used in the armrest box, for example, when the two opening and closing parts 30 are the left armrest 30L and the right armrest 30R of the armrest box respectively, and the base 40 is set on the box body of the armrest box, during the process of opening the left armrest 30L and the right armrest 30R at the same time, for example, after the left armrest 30L and the right armrest 30R are unlocked, the left armrest 30L and the right armrest 30R are opened respectively by the action of the reset part 80, such as the reset spring. At this time, the opening movement of the left armrest 30L is transmitted to the left drive wheel 10L, and the opening movement of the right armrest 30R is transmitted to the right drive wheel 10R. Since the left drive wheel 10L and the right drive wheel 10R are connected by transmission, the asynchrony of the opening movements of the left armrest 30L and the right armrest 30R can be eliminated to a certain extent.

[0052] Optionally, the transmission wheel 10 is a gear, and the two gears mesh together.

[0053] The two gears are a left gear and a right gear, which have meshing teeth to achieve synchronous rotation. This invention will be described using this as an example later in this specification.

[0054] Taking the left gear as an example, the teeth on it are not limited to being set to surround it; they can be set to fan-shaped teeth, which can be set as needed. This will not be explained in detail here.

[0055] Thus, by setting the transmission wheel 10 as a gear, the meshing of the two gears can ensure the synchronicity of the rotation of the two transmission wheels 10, thereby improving the consistency of the simultaneous opening or closing of the left handrail 30L and the right handrail 30R.

[0056] Of course, in another embodiment, the transmission wheel 10 can also be configured as a friction wheel, with the two friction wheels connected by frictional transmission. This achieves synchronous rotation of the two friction wheels. In this case, the normal pressure between the two friction wheels is set according to actual needs, so that the two friction wheels do not rotate relative to each other when the two opening and closing parts 30 are opened simultaneously (this scheme is not shown).

[0057] like Figure 5 and Figure 6 As shown, optionally, the base 40 includes an end frame 41 located at one end of the shaft axis, and the drive wheel 10 is mounted on the outer side of the end frame 41 along the shaft axis via a wheel axle 11.

[0058] At this time, the inner end of the end frame 41 along the axis of rotation forms the opening of the storage space opened and closed by the opening and closing member 30. By installing the transmission wheel 10 on the outer side of the end frame 41 along the axis of rotation, the movement of the transmission wheel 10 and the like can be avoided from causing interference to the components inside the storage space.

[0059] like Figures 1 to 6 As shown, when the fixed shaft 60 is the rotating shaft of the corresponding opening and closing element 30, in the optional installation method of the first shaft 21, the first shaft 21 can be installed on the corresponding opening and closing element 30.

[0060] It should be understood that the descriptions of the rotation or installation of each shaft in this specification are understood by those skilled in the art to be implemented in the same way and in the same way. For example, the opening / closing member 30 and the connecting rod 20 are rotatably connected by the first shaft 21. The first shaft 21 may be fixed on the opening / closing member 30 and the connecting rod 20 may be rotatably connected to the first shaft 21. Alternatively, the first shaft 21 may be fixed on the connecting rod 20 and the first shaft 21 may be rotatably installed on the opening / closing member 30. Or, the first shaft 21 may be rotatable relative to the opening / closing member 30 and the connecting rod 20 respectively.

[0061] For example, when the base 40 includes an end frame 41 and the first shaft 21 is mounted on the corresponding opening and closing member 30, the end frame 41 is provided with a guide groove 43 coaxial with the rotating shaft corresponding to the first shaft 21. The first shaft 21 passes through the guide groove 43 and is connected to the first end of the connecting rod 20. The first shaft 21 is slidably and rotatably connected relative to the guide groove 43.

[0062] At this time, corresponding to the left handrail 30L and the right handrail 30R, two guide grooves 43 can be respectively provided on the end frame 41. The guide grooves 43 can enhance the stability of the first end movement of the corresponding connecting rod 20. For example, taking the left transmission assembly as an example, the left shaft 21L is installed on the left handrail 30L, and the left shaft 21L passes through the guide groove 43 located on the left side and is connected to the left connecting rod 20L.

[0063] like Figure 8 As shown, when the fixed shaft 60 is the rotating shaft of the corresponding opening and closing element 30, in the optional installation method of the first shaft 21, the transmission assembly also includes a rocker arm 50. At least one first shaft 21 is correspondingly provided with a rocker arm 50. One end of the rocker arm 50 is connected to the first end of the connecting rod 20 through the corresponding first shaft 21, and the other end of the rocker arm 50 is fixedly connected to the corresponding rotating shaft and the opening and closing element 30.

[0064] At this time, the connection between the first shaft 21 and the rotating shaft is formed by the external swing arm 50. There is no need to set up a separate structure for installing the first shaft 21 on the opening and closing part 30. This can reduce the structural requirements of the opening and closing part 30 and reduce the weight of the opening and closing part 30 to a certain extent.

[0065] For example, when the base 40 includes an end frame 41 and the transmission assembly includes a rocker arm 50, one end of the rotating shaft corresponding to the rocker arm 50 is fixedly connected to the opening and closing member 30, and the other end passes through the end frame 41 and is fixedly connected to the rocker arm 50. Figure 8 The diagram shows a configuration with a left swing arm 50L and a right swing arm 50R. For example, one end of the left swing arm 50L is connected to the left connecting rod 20L via a left shaft 21L, and the other end is fixedly connected to the left rotating shaft 61L and the left handrail 30L.

[0066] like Figures 1 to 6 ,and Figure 8 As shown in the above embodiment, optionally, the transmission wheel 10 is provided with a circumferentially extending arcuate guide groove 12 (coaxial with the transmission wheel 10), and along the circumference of the transmission wheel 10, the arcuate guide groove 12 has a first groove end 13 ( Figure 4 (as indicated by the middle label) and the second end 14 of the second groove, the second end of the connecting rod 20 is slidably and rotatably connected to the arc guide groove 12 via the second shaft 22;

[0067] When both opening and closing parts 30 are in the closed state, the second shaft 22 is located at the first groove end 13 of the corresponding arc guide groove 12.

[0068] When both opening / closing elements 30 are in the closed state, and only one opening / closing element 30 is in the opening movement, the connecting rod 20 corresponding to the opening / closing element 30 in the opening movement is linked, and the linked connecting rod 20 keeps the corresponding second shaft 22 in the first groove end 13 and drives the corresponding transmission wheel 10 to rotate in a set direction. The set direction is the direction in which the arc guide groove 12 extends from the second groove end 14 to the first groove end 13. The two transmission wheels 10 rotate synchronously, and the connecting rod 20 corresponding to the opening / closing element 30 in the closed state remains stationary. The stationary connecting rod 20 moves relative to the corresponding transmission wheel 10, and causes the corresponding second shaft 22 to move from the first groove end 13 to the second groove end 14 in the corresponding arc guide groove 12.

[0069] It should be understood that, in addition to the need for the opening movements of the two opening and closing elements 30 to be synchronized, in some cases, there is also a need for individual opening or closing.

[0070] The first mode is defined as when both opening and closing elements 30 are in the closed state and only one opening and closing element 30 is in the opening movement.

[0071] Specifically, by Figure 2 When both opening and closing parts 30 shown are in the closed state, to Figure 4 When the situation changes from one opening / closing element 30 being in the closed state and the other opening / closing element 30 being in the open limit position, that is, when both the left handrail 30L and the right handrail 30R are in the closed state and only the left handrail 30L is in the opening movement, the left handrail 30L drives the corresponding left connecting rod 20L to move, the left drive wheel 10L rotates clockwise, the right drive wheel 10R is connected to the left drive wheel 10L, so the right drive wheel 10R will rotate counterclockwise. Since the first shaft 21 (i.e., the right first shaft 21R) corresponding to the right handrail 30R remains stationary, the right connecting rod 20R will remain stationary. The rotation of the right drive wheel 10R causes the second shaft 22 (i.e., the right second shaft 22R) corresponding to the right handrail 30R to slide and rotate from the first groove end 13 to the second groove end 14 in the arc guide groove 12 on the right drive wheel 10R until the left handrail 30L is in the open limit position. At this time, the right second shaft 22R is located at the second groove end 14 of the right drive wheel 10R.

[0072] In the second mode, when both opening and closing parts 30 are in the open state, and one of the opening and closing parts 30 is in the closing movement, the connecting rod 20 corresponding to the opening and closing part 30 in the open state remains stationary, and the corresponding transmission wheel 10 remains stationary. Thus, the transmission wheel 10 corresponding to the opening and closing part 30 in the closing movement remains stationary, and the connecting rod 20 corresponding to the opening and closing part 30 in the closing movement is linked. Specifically, the connecting rod 20 corresponding to the opening and closing part 30 in the closing state moves relative to the corresponding transmission wheel 10, so that its corresponding second shaft 22 moves from the first groove end 13 to the second groove end 14.

[0073] As Figure 3 When both opening and closing parts 30 shown are in the open state Figure 4 When only one opening / closing element 30 is closed, that is, when both the left handrail 30L and the right handrail 30R are in the open state, and only the right handrail 30R is closing, the right connecting rod 20R corresponding to the right handrail 30R is linked to the right handrail 30R. The right connecting rod 20R moves to the right and tends to drag the right drive wheel 10R to rotate clockwise. However, since the left drive wheel 10L is connected to the right drive wheel 10R, the left drive wheel 10L tends to rotate counterclockwise. At this time, the left second shaft 22L is located in the left drive position. At the first groove end 13 of the arc guide groove 12 of the driving wheel 10L, the left handrail 30L is in the open state, and the left connecting rod 20L corresponding to the left handrail 30L remains stationary. Therefore, the left drive wheel 10L will remain stationary (there may be a small floating movement due to processing errors, etc.), while the right drive wheel 10R remains stationary. The right connecting rod 20R moves with the right handrail 30R, and the second shaft 22 (i.e., the right second shaft 22R) at the left end of the right connecting rod 20R moves from the first groove end 13 to the second groove end 14 in the arc guide groove 12 on the right drive wheel 10R.

[0074] Further analysis combining the first and second modes reveals that if both opening / closing components 30 open simultaneously, and there is a certain time difference between the initial moments of their opening movements—for example, if the left armrest 30L and right armrest 30R are unlocked sequentially with a 0.5-second interval—the left armrest 30L unlocks first. Under the action of, for example, the reset component 80, the left armrest 30L opens first. At this time, the left drive wheel 10L rotates clockwise, and the right drive wheel 10R rotates counterclockwise. Since the right armrest 30R is not unlocked, the right connecting rod 20R remains stationary. The second shaft 22 (i.e., the right second shaft 22R) at the left end of the right connecting rod 20R is guided within the arcuate guide groove 12 on the right drive wheel 10R by the first… The first slot 13 slides towards the second slot 14, unlocking the right handrail 30R after 0.5 seconds. At this time, the right handrail 30R drives the right connecting rod 20R. Because the left handrail 30L needs to drive the left drive wheel 10L and the right drive wheel 10R to rotate synchronously, the opening speed of the left handrail 30L is slower than that of the right handrail 30R. Therefore, the right handrail 30R drives the right connecting rod 20R, causing its left end's second shaft 22 (i.e., the right second shaft 22R) to move towards the first slot 13 within the arc guide groove 12 on the right drive wheel 10R, until the second shaft 22 (i.e., the right second shaft 22R) abuts against the inner wall of the arc guide groove 12 at the first slot 13. Afterward, the left handrail 30L and the right handrail 30R will open at a relatively synchronized speed. The situation where both opening and closing parts 30 close simultaneously is similar and will not be described in detail here.

[0075] Thus, in this embodiment, this configuration maintains consistency when both opening and closing elements 30 are opened or closed simultaneously, while also satisfying the requirement for any single opening or closing element 30 to open or close, thus meeting various usage needs. For example, only the left armrest 30L can be opened without interfering with the closed state of the right armrest 30R, or only the right armrest 30R can be opened without interfering with the closed state of the left armrest 30L. When both the left armrest 30L and the right armrest 30R are opened simultaneously, their opening movements tend to be synchronized. The structure is simple and highly practical.

[0076] Optionally, when the opening / closing member 30 is in any position, the axis of the corresponding second shaft 22 is located on the same side of the first plane S1 determined by the axis of the corresponding first shaft 21 and wheel axle 11.

[0077] Specifically, the first plane S1 is the plane of the axis of the corresponding first shaft 21 and wheel axle 11. For example Figure 2 In the middle, when both the left armrest 30L and the right armrest 30R are in the closed state, the position of the first plane S1 passing through the axis of the left first axle 21L and the left wheel axle 11L is schematically marked by a thick solid line. At this time, the axis of the left first axle 21L and the left wheel axle 11L is located on the first plane S1, and the axis of the left second axle 22L is located on one side of the first plane S1, such as the upper side.

[0078] Thus, during the movement of the left handrail 30L or the right handrail 30R, the axis of the left second axis 22L is always located on one side of its corresponding first plane S1. The multi-link structure formed by the left handrail 30L will not have a dead point, and its movement stability is high. The axis of the right second axis 22R is always located on one side of its corresponding first plane S1. The multi-link structure formed by the right handrail 30R will not have a dead point, and the movement stability of the left handrail 30L and the right handrail 30R can be determined.

[0079] It should be understood that the axes of the fixed axis 60 and the second axis 22 can be located on the same side of the corresponding first plane S1. In this case, the reference... Figures 2 to 4 The installation structure is relatively compact. However, it is not limited to this. For example, in another embodiment, the fixed axis 60 and the second axis 22 and the axis can be located on different sides of the corresponding first plane S1, which will not be described in detail here.

[0080] Optionally, when the axes of the fixed shaft 60 and the second shaft 22 are located on the same side of the corresponding first plane S1, and when both opening and closing members 30 are in the closed position, the distance between the second shaft 22 and the first plane S1 is within a preset range. When both opening and closing members 30 are in the opening movement, the distance between the second shaft 22 and the first plane S1 gradually increases. Alternatively, it can be understood that the plane defined by the axis of the second shaft 22 and the axis of the wheel axle 11 is the second plane, and the angle between the corresponding first plane S1 and the second plane is the first angle. The first angle is less than or equal to 15°, for example, less than or equal to 10° or 3°. When both opening and closing members 30 are in the opening movement, the first angle gradually increases.

[0081] Optionally, the inner wall of the arc guide groove 12 at the first groove end 13 is provided with a limiting protrusion. When the second shaft 22 is located at the first groove end 13, the limiting protrusion abuts against the second shaft 22, restricting the second shaft 22 from moving along the arc guide groove 12 to the second groove end 14 and disengaging from the first groove end 13.

[0082] It should be understood that when the force exerted by the second shaft 22 relative to the arc guide groove 12 exceeds the limit value, it can disengage from the limiting protrusion and move within the arc guide groove 12 toward the side closer to the second groove end 14.

[0083] In this invention, the rotation angle of the left and right transmission wheels 10R is preferably less than or equal to 90 degrees, for example less than 88° or less than 85°. In this case, even without the limiting protrusion, the transmission wheel 10 can be driven to rotate within the corresponding angle range through the second shaft 22.

[0084] Of course, it should be understood that, further, in the alternative scheme where the opening / closing element 30 drives the corresponding first shaft 21 to rotate around the fixed axis 60, a conversion structure can be provided to convert the rotation of the opening / closing element 30 into the rotation of the first shaft 21 around the fixed axis 60. That is, the fixed axis 60 is not limited to being the rotating shaft of the opening / closing element 30.

[0085] Taking the left transmission assembly and left handrail 30L as examples, the wheel axle 11 of the left transmission wheel 10L (i.e., the left wheel axle 11L), the left first shaft 21L, and the left second shaft 22L can be set to extend along the Z-axis direction. A first bevel gear can be coaxially set on the left handrail 30L. The first bevel gear meshes with the second bevel gear. The axial direction of the second bevel gear extends along the Z-axis direction. A wheel disk is installed at the lower end of the gear shaft of the second bevel gear. The first end of the connecting rod 20 is connected to the wheel disk through the left first shaft 21L. At this time, the rotational motion of the left handrail 30L can be converted into the motion of the left first shaft 21L through the first bevel gear, the second bevel gear, and the wheel disk. At this time, the shaft of the second bevel gear is the fixed shaft 60 (not shown in this scheme diagram).

[0086] However, it should be understood that this is not a limitation. For example, the left armrest 30L and right armrest 30R are not limited to being rotatably connected to the base 40; they can also be configured to slide to the left and right respectively. Of course, in this case, a corresponding structure should be provided so that the movement of the left armrest 30L can be converted into the rotation of the first axis 21 around the fixed axis 60. For example, a crank-slider structure can be used, with the sliding left armrest 30L acting as the slider, and the rotation center of the fixed axis 60 and the crank can be set to coincide. This will not be explained in detail here. In this case, the first plane of symmetry is generally set at the center of the total sliding stroke of the left armrest 30L and right armrest 30R in the left-right direction, and the sliding strokes of the left armrest 30L and right armrest 30R are consistent.

[0087] like Figures 5 to 7 As shown, optionally, a locking assembly 70 is provided between the base 40 and the opening / closing member 30, the locking assembly 70 realizing the locking or unlocking of the two opening / closing members 30.

[0088] Specifically, the latch assembly 70 can lock or unlock the two opening and closing parts 30 respectively. It should be understood that the structural form of the latch assembly 70 is not limited, and it can be touch unlock, button unlock, or push-pull unlock, etc.

[0089] Optionally, the latch assembly 70 includes two unlocking parts 714, which are located on the base 40 and at one end of the opening / closing member 30 along the length direction. The two unlocking parts 714 are arranged adjacent to each other and are used to unlock the two opening / closing members 30 respectively.

[0090] The length direction is generally perpendicular to the first direction. For example, two unlocking components 714 are located at the front end of the base 40, arranged side by side along the left-right direction, and exposed on the upper surface. The two unlocking components 714 are used to unlock the left armrest 30L and the right armrest 30R, respectively. When the left unlocking component 714 is operated, for example by pressing it, the left armrest 30L opens. When the right unlocking component 714 is operated, for example by pressing it, the right armrest 30R opens. When both unlocking components 714 are operated, for example by pressing them, the left armrest 30L and the right armrest 30R open simultaneously.

[0091] like Figure 6 and Figure 7 As shown, optionally, the locking assembly 70 includes two locking structures 71 and two lock hole structures. One of the base 40 and the opening / closing member 30 is provided with a locking structure 71, and the other of the base 40 and the opening / closing member 30 is provided with a lock hole structure. The opening / closing member 30 is locked in the closed state through the connection between the locking structure 71 and the lock hole structure.

[0092] For example, the figure shows a case where the locking structure 71 is provided on the base 40, and the left handrail 30L and right handrail 30R are provided with the locking structure 71 (not shown in the figure). The specific structure of the locking structure 71 is not a limitation.

[0093] For example, the latch structure 71 includes a latch 711, a mounting bracket 712, a converter 713, an unlocking component 714, a first spring 715, and a second spring. The latch 711 is rotatably mounted on the mounting bracket 712, which is connected to the base 40. The first spring 715 is a torsion spring and is disposed between the latch 711 and the mounting bracket 712. The latch 711 has a first limit position and a second limit position. In the first limit position, the latch portion of the latch 711 extends into the lock hole structure to lock the corresponding opening and closing component 30. In the second limit position, the latch 711... The locking tongue of component 1 disengages from the lock hole structure to unlock the corresponding opening / closing component 30; the conversion component 713 is movably connected to the mounting bracket 712, the second spring is disposed between the conversion component 713 and the mounting bracket 712, the unlocking component 714 is slidably mounted on the mounting bracket 712, the conversion component 713 is used to convert the pressing motion of the unlocking component 714 into the movement of the locking tongue 711, so that the locking tongue 711 moves from the first limit position to the second limit position. When the pressing of the unlocking component 714 is released, the second spring causes the conversion component 713 to reset, and the first spring 715 causes the locking tongue 711 to reset.

[0094] In this way, one of the locking structures 71 can be operated to unlock the corresponding opening / closing member 30, or both locking structures 71 can be operated simultaneously to unlock both opening / closing members 30 at the same time. Even if there is a short time difference between the operation of the two locking structures 71, the opening movement of the two opening / closing members 30 can be made consistent.

[0095] like Figure 6 As shown, optionally, a reset member 80 is provided between the opening / closing member 30 and the base 40, and the reset member 80 is used to drive the opening / closing member 30 to open.

[0096] The reset element 80 can be configured using relevant technologies. For example, when the opening / closing element 30 is rotatably connected to the base 40, the reset element 80 may include a torsion spring. When the opening / closing element 30 closes, the elastic potential energy of the torsion spring increases; when the opening / closing element 30 opens, the elastic potential energy of the torsion spring decreases. The base 40 may include side frames 42 located in the left-right direction, with torsion springs respectively installed on the left and right side frames 42 for opening the left armrest 30L and the right armrest 30R.

[0097] In this way, the opening of the corresponding opening and closing member 30 can be driven by the reset member 80, which is simple in structure and highly practical. In addition, even if there is a performance difference between the reset members 80 corresponding to the two opening and closing members 30, the synchronicity of their movements can be ensured when the two opening and closing members 30 open at the same time.

[0098] It should be understood that the pivots of the left armrest 30L and the right armrest 30R can be configured as separate structures or as a single unit. Taking the left pivot 61L as an example, it can include two pivots, one of which is located near the front end and mounted on a support frame on the side frame 42. The support frame is located on the top surface of the side frame 42. The position of the pivot should allow sufficient space on the top surface of the side frame 42 for the left armrest 30L to rotate. The other left pivot 61L, located near the rear end, is mounted on the end frame 41 located at the rear end. Further details will not be provided here.

[0099] Optionally, when the opening / closing member 30 is rotatably connected to the base 40 and the reset member 80 is located at the set end in the length direction of the opening / closing member 30, a transmission component is provided at least at one end of the opening / closing member 30 that is far away from the set end in the length direction.

[0100] For example, Figure 5 In the middle, the locking assembly 70 is located at the front end of the base 40, the reset member 80 is set near the front end of the base 40, and the transmission wheel 10 of the transmission assembly is installed on the end frame 41 at the rear end of the base 40.

[0101] It should be understood that when the opening / closing member 30 is provided with only one reset member 80 and is located near the end of the opening / closing member 30, such as the front end, and the opening / closing member 30 is relatively long, the movement of the front and rear ends of the opening / closing member 30 may have poor synchronization or even the rear end may get stuck.

[0102] In this embodiment, by setting a transmission component at the rear end, on the one hand, the resistance of the opening and closing member 30 when it is opened is increased, so as to avoid the opening and closing member 30 having too little resistance when it is opened, which would cause the front end of the opening and closing member 30 to rotate too much faster than the rear end and affect the synchronization of the front and rear ends. On the other hand, the transmission component is equivalent to increasing the contact surface between the opening and closing member 30 and the base 40 when they rotate relative to each other, thereby making the rotation of the opening and closing member 30 more stable and improving the synchronization of the front and rear ends.

[0103] A limiting structure can be installed on the end frame 41 to limit the maximum swing amplitude of the connecting rod 20. For example, it can limit the opening limit position of the opening / closing member 30. Further details are omitted here.

[0104] Another embodiment of the present invention provides an armrest box, which includes two opening and closing members 30 for forming an armrest, a base 40 for forming a box body, and an opening and closing connection mechanism as described in the above embodiment. The two opening and closing members 30 are distributed along a first direction and are openably and closably mounted on the base 40. The two transmission components of the opening and closing connection mechanism are provided corresponding to the two opening and closing members 30.

[0105] Preferably, the first direction is consistent with the left and right direction, and the left armrest 30L and the right armrest 30R are rotatably connected to the base 40. The base 40 is sufficient to form at least part of the body of the armrest box, which will not be described in detail here.

[0106] The base 40 and the locking assembly 70 and reset member 80 of the armrest box can adopt the structure described in the above-described embodiment of the opening and closing connection mechanism, and will not be described in detail here.

[0107] The left armrest 30L and the right armrest 30R are generally designed as multi-component structures, which can employ relevant technologies, but will not be described in detail here.

[0108] Another embodiment of the present invention provides a vehicle sub-instrument panel, which includes the armrest box as described in the above embodiment.

[0109] Another embodiment of the present invention provides an automobile that includes an armrest box as described in the above embodiment.

[0110] While the present invention has been disclosed above, its scope of protection is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the scope of protection of the present invention.

Claims

1. An opening and closing connection mechanism, characterized in that, The system includes two transmission components, each corresponding to one of the two opening / closing members (30). The two opening / closing members (30) are distributed along a first direction and are rotatably mounted on a base (40). Each transmission component includes a transmission wheel (10) and a connecting rod (20). The two transmission wheels (10) and the two connecting rods (20) of the two transmission components are symmetrically arranged in the first direction. The two transmission wheels (10) are rotatably mounted on the base (40). The two transmission wheels (10) are connected in a transmission manner and rotate in opposite directions. The connecting rod (20) is disposed between the corresponding transmission wheel (10) and the opening / closing member (30). The connecting rod (20) has a first end disposed near the corresponding opening / closing member (30) and a second end disposed opposite to the first end. The first end of the connecting rod (20) is used to rotate around a first shaft (21), and the first shaft (21) is used to rotate around a fixed shaft (60) under the drive of the corresponding opening / closing member (30). The second end of the connecting rod (20) is rotatably connected to the corresponding transmission wheel (10) around a second shaft (22). The fixed shaft (60) is mounted on the base (40). The fixed shaft (60), the first shaft (21), the second shaft (22), and the axle (11) of the transmission wheel (10) are parallel to each other. Among them, the two opening and closing parts (30) are rotatably connected to the base (40) through two rotating shafts respectively, the symmetry plane of the two transmission wheels (10) is the symmetry plane of the two rotating shafts, and the opening and closing part (30) is configured to drive the first shaft (21) to rotate around the fixed axis (60) by rotation, and the fixed axis (60) is the rotating shaft of the corresponding opening and closing part (30); Alternatively, the transmission assembly includes a crank-slider structure, with two opening and closing members (30) slidably mounted on the base (40) along the first direction. The opening and closing members (30) are configured to convert the sliding motion of the opening and closing members (30) into the rotation of the first shaft (21) about the fixed axis (60) via the crank-slider structure. The fixed axis (60) is located at the rotation center of the crank of the crank-slider structure.

2. The opening and closing connection mechanism as described in claim 1, characterized in that, The transmission wheel (10) is a gear, and two gears mesh with each other; or, the transmission wheel (10) is a friction wheel, and two friction wheels contact each other.

3. The opening and closing connection mechanism as described in claim 1, characterized in that, When the opening / closing element (30) is configured to drive the first shaft (21) to rotate about the fixed shaft (60) by rotation; The base (40) includes an end frame (41) located at one end of the shaft axis, and the transmission wheel (10) is mounted on the outside of the end frame (41) along the shaft axis via the axle (11). And / or, at least one of the first shafts (21) is mounted on the corresponding opening / closing element (30); And / or, the transmission assembly further includes a rocker arm (50), at least one first shaft (21) is correspondingly provided with the rocker arm (50), one end of the rocker arm (50) is connected to the first end of the connecting rod (20) through the corresponding first shaft (21), and the other end of the rocker arm (50) is fixedly connected to the corresponding rotating shaft and the opening and closing member (30); When the base (40) includes the end frame (41) and the first shaft (21) is mounted on the corresponding opening and closing member (30), the end frame (41) is provided with a guide groove (43) coaxial with the rotating shaft corresponding to the first shaft (21), the first shaft (21) passes through the guide groove (43) and is connected to the first end of the connecting rod (20), and the first shaft (21) is slidably and rotatably connected relative to the guide groove (43); When the base (40) includes the end frame (41) and the transmission assembly includes the swing rod (50), one end of the rotating shaft corresponding to the swing rod (50) is fixedly connected to the opening and closing member (30), and the other end passes through the end frame (41) and is fixedly connected to the swing rod (50).

4. The opening and closing connection mechanism as described in any one of claims 1 to 3, characterized in that, The transmission wheel (10) is coaxially provided with an arc guide groove (12) extending in the circumferential direction. Along the circumferential direction of the transmission wheel (10), the arc guide groove (12) has a first groove end (13) and a second groove end (14). The second end of the connecting rod (20) is slidably and rotatably connected to the arc guide groove (12) through the second shaft (22). When both opening and closing elements (30) are in the closed state, the second shaft (22) is located at the first groove end (13) of the corresponding arc guide groove (12). When both opening and closing elements (30) are in the closed state and only one opening and closing element (30) is in the opening movement, the connecting rod (20) corresponding to the opening and closing element (30) in the opening movement is linked, and the linked connecting rod (20) causes the corresponding second shaft (22) to remain at the first groove end (13) and drives the corresponding transmission wheel (10) to rotate in a set direction. The set direction is the direction in which the arc guide groove (12) extends from the second groove end (14) to the first groove end (13). The two transmission wheels (10) rotate synchronously, keeping the connecting rod (20) corresponding to the opening and closing element (30) in the closed state stationary. The stationary connecting rod (20) moves relative to the corresponding transmission wheel (10), and causes the corresponding second shaft (22) to move from the first groove end (13) to the second groove end (14) in the corresponding arc guide groove (12).

5. The opening and closing connection mechanism as described in claim 4, characterized in that, When the opening / closing member (30) is in any position, the axis of the corresponding second shaft (22) is located on the same side of the first plane (S1) determined by the axis of the corresponding first shaft (21) and the wheel axle (11); And / or, the arc guide groove (12) is provided with a limiting protrusion on the inner wall at the first groove end (13). When the second shaft (22) is located at the first groove end (13), the limiting protrusion abuts against the second shaft (22), restricting the second shaft (22) from moving along the arc guide groove (12) toward the second groove end (14) and away from the first groove end (13).

6. The opening and closing connection mechanism as described in any one of claims 1 to 3, characterized in that, A locking assembly (70) is provided between the base (40) and the opening / closing member (30), and the locking assembly (70) locks or unlocks the two opening / closing members (30); And / or, a reset member (80) is provided between the opening / closing member (30) and the base (40), the reset member (80) being used to drive the opening / closing member (30) to open.

7. The opening and closing connection mechanism as described in claim 6, characterized in that, The latch assembly (70) includes two latch structures (71) and two lock hole structures. The latch structure (71) is provided on one of the base (40) and the opening / closing member (30), and the lock hole structure is provided on the other of the base (40) and the opening / closing member (30). The opening / closing member (30) is locked in the closed state by the connection between the latch structure (71) and the lock hole structure. And / or, the latch assembly (70) includes two unlocking components (714), which are located on the base (40) and at one end of the opening / closing member (30) along the length direction. The two unlocking components (714) are arranged adjacent to each other and are used to unlock the two opening / closing members (30) respectively.

8. An armrest box, characterized in that, It includes two opening and closing elements (30) for forming a handrail, a base (40) for forming a housing, and an opening and closing connection mechanism as described in any one of claims 1 to 7, wherein the two opening and closing elements (30) are distributed along a first direction and are openably and closably mounted on the base (40), and two transmission components of the opening and closing connection mechanism are provided corresponding to the two opening and closing elements (30).

9. A car, characterized in that, Including the armrest box as described in claim 8.

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