A chute multi-link support mechanism

Abstract

The present application relates to the field of multi-link support mechanism, and discloses a sliding groove multi-link support mechanism, which comprises a mounting seat connected to a first mounting base and provided with a guide sliding groove, a hinge assembly comprising a first link, a second link and a third link, first and second ends of the first link are respectively slidably hingedly connected to the guide sliding groove and hingedly connected to a second mounting base to form a first hinge point, the second link is crossly arranged with the first link and is hingedly connected at the cross position to form a second hinge point, first and second ends of the second link are respectively hingedly connected to the mounting seat and a first end of the third link to form a third hinge point, a second end of the third link is hingedly connected to the second mounting base to form a fourth hinge point, and a line connecting the first, second, third and fourth hinge points forms a quadrilateral, a transmission assembly is arranged on the mounting seat and is used for transmission cooperation with the first mounting base, and an elastic assembly is arranged on the mounting seat, and the elastic assembly exerts elastic force on the transmission assembly to enable the second mounting base to maintain its opening and closing state.

Description

Technical Field

[0001] This invention relates to the field of multi-link support mechanisms, and more particularly to a sliding multi-link support mechanism. Background Technology

[0002] Most existing furniture with lift-up doors are equipped with a hovering mechanism, which allows the door to remain at a certain opening angle, improving ease of use. Currently, the mainstream hovering mechanism mostly uses a quadrilateral linkage hinge structure, which achieves door support and hovering through multi-point hinge connections between the hinge and the cabinet / door, combined with elastic components.

[0003] However, in the hinge assembly, the four hinge points of the quadrilateral connecting rod that connects to the door are all fixed on the connecting rod. This causes the force to be concentrated on the fixed hinge points and connecting rod during the opening and closing of the door, resulting in high transmission resistance, difficult opening and closing operation, and low smoothness of movement. Summary of the Invention

[0004] This application provides a multi-link support mechanism for a sliding groove. By configuring the first end of the first link and the guide groove in a sliding hinge connection, the force on the first link is decomposed into a component force along the direction of the guide groove. When the first end of the first link moves along the guide groove, the first component force is effectively decomposed, making the opening and closing process less strenuous.

[0005] The technical solution adopted by this invention to solve its problem is: A chute multi-link support mechanism, comprising: Mounting base, the mounting base being used to connect to the first mounting base, the mounting base being provided with a guide groove; A hinge assembly includes a first link, a second link, and a third link; a first end of the first link is slidably hinged to the guide groove, and a second end of the first link is hinged to a second mounting base to form a first hinge point; the second link is intersected with the first link, and the second link and the first link are hinged at their intersection to form a second hinge point; a first end of the second link is hinged to the mounting base, and a second end of the second link is hinged to the first end of the third link to form a third hinge point; a second end of the third link is hinged to the second mounting base to form a fourth hinge point; the lines connecting the first hinge point, the second hinge point, the third hinge point, and the fourth hinge point form a quadrilateral; A transmission assembly is disposed on the mounting base and is used for transmission engagement with the first mounting base; An elastic component is disposed on the mounting base, and the elastic component acts elastically on the transmission component so that the second mounting base can maintain its open or closed state.

[0006] In some embodiments, the second link includes a first side arm and a second side arm, the first side arm and the second side arm are disposed opposite to each other, and the first link and the third link are disposed between the first side arm and the second side arm; The first side arm and the second side arm are both arranged to cross the first connecting rod. The first end of the first side arm and the first end of the second side arm are both hinged to the mounting base. The second end of the first side arm and the second end of the second side arm are both hinged to the first end of the third connecting rod.

[0007] In some embodiments, the first side arm and / or the second side arm are connected to the first link, and / or the first side arm and / or the second side arm are connected to the third link by a hinge structure; The hinge structure includes a first protrusion, a second protrusion, and a connector. The first protrusion is disposed on the first side arm, and the second protrusion is disposed on the second side arm. The first protrusion and the second protrusion are disposed opposite to each other, and the first protrusion and the second protrusion respectively abut against the opposite sides of the corresponding connecting rod. The connector is used to hinge the first protrusion, the second protrusion, and the corresponding connecting rod.

[0008] In some embodiments, the first side arm and / or the second side arm are partially recessed toward the first connecting rod, such that the first side arm and / or the second side arm form a groove on the side away from the first connecting rod and a protrusion on the side closer to the first connecting rod; The two ends of the connector are respectively fixed in the groove of the first side arm and the groove of the second side arm.

[0009] In some embodiments, the mounting base includes a first cover and a second cover that snap together, with an opening forming a mounting cavity between the first cover and the second cover; The first cover is provided with a first sliding groove, and the second cover is provided with a second sliding groove, the second sliding groove being arranged opposite to the first sliding groove; The first end of the first connecting rod is slidably hinged to the first slide groove and the second slide groove, and the opposite sides of the first end of the first connecting rod respectively abut against the inner wall of the first cover and the inner wall of the second cover. The two opposite sides of the first end of the second connecting rod abut against the inner wall of the first cover and the inner wall of the second cover, respectively.

[0010] In some embodiments, the first end of the third link extends away from its second end to form a buffer mating portion; The multi-link support mechanism of the slideway also includes a buffer assembly, which is used to abut against the buffer mating part during the closing process of the second mounting base.

[0011] In some embodiments, the transmission assembly includes a rotary transmission element, a fourth link, a fifth link, and a sliding element; The rotary transmission component is rotatably mounted on the mounting base, and the rotary transmission component is provided with a driven protrusion; The first end of the fourth link is fixed to the rotary transmission component, the second end of the fourth link is hinged to the first end of the fifth link, and the second end of the fifth link is used to hinge to the second mounting base; The sliding member has a pushing surface, which abuts against the outer peripheral wall of the driven protrusion; the elastic component provides an elastic force to the sliding member to drive the pushing surface to abut against the driven protrusion; the driven protrusion slides against the pushing surface when the rotary transmission member rotates, so as to maintain the second mounting base in its open or closed state through the fourth and fifth links.

[0012] In some embodiments, the fourth link and the fifth link are detachably located outside the mounting base.

[0013] In some embodiments, the mounting base is provided with an arc-shaped through hole; The driven protrusion is provided with a connecting shaft, which is slidably disposed in the arc-shaped through hole, and the free end of the connecting shaft is connected to the first end of the fourth connecting rod.

[0014] In some embodiments, the slider is provided with a limiting recess, and the inner sidewall of the limiting recess includes the pushing surface; The rotary transmission component and the driven protrusion are disposed within the limiting recess.

[0015] In summary, the multi-link support mechanism for sliding grooves provided by this invention has the following technical effects: The first end of the first connecting rod is slidably hinged to the guide groove. That is, the first end of the first connecting rod is hinged to the guide groove and can move along it. In this way, the force acting on the first connecting rod during the opening and closing of the second mounting base can be decomposed into a first component force along the guide groove direction and a second component force perpendicular to the guide groove. Since the first end of the first connecting rod can move along the guide groove during the opening and closing process, the first component force is effectively decomposed. In other words, the guide groove can relieve force on the first connecting rod, thereby reducing the operating resistance during the opening and closing process and making opening and closing more effortless.

[0016] By decomposing the force on the first link through the guide groove, the downward load generated during the opening and closing process is removed in the form of the first component force in the groove, leaving only the second component force that drives the first link to rotate. This prevents the first link from transmitting downward pressure to the second link, which greatly alleviates the problem of the hinge joint between the second link and the mounting base bearing excessive radial force for a long time, leading to damage and breakage of the connection joint, and improves the reliability of the hinge joint between the second link and the mounting base. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a front view of the sliding groove multi-link support mechanism including the mounting base according to an embodiment of the present invention; Figure 2 This is a three-dimensional exploded view of the multi-link support mechanism of the slide groove according to an embodiment of the present invention; Figure 3 A schematic diagram of the hinge assembly and the first and second covers; Figure 4 This is a three-dimensional exploded view of the hinge assembly. Figure 5 This is a schematic diagram of the hinge assembly in its fully open state. Figure 6 This is a structural schematic diagram of the hinge assembly in the supported state; Figure 7 This is a schematic diagram of the hinge assembly in a critically closed state. Figure 8 This is a schematic diagram of the hinge assembly in the closed state; Figure 9 This is a schematic diagram of the rotary transmission component. Figure 10 This is a schematic diagram of the multi-link support mechanism of the slide in the fully open state. Figure 11 This is a schematic diagram of the multi-link support mechanism of the slide in the supported state. Figure 12 This is a schematic diagram of the multi-link support mechanism of the chute in the critical closed state. Figure 13 This is a schematic diagram of the multi-link support mechanism of the slide in the closed state. The meanings of the reference numerals in the attached figures are as follows: 10. Mounting base; 101. Guide groove; 11. First cover; 111. First groove; 12. Second cover; 121. Second groove; 13. Rotary transmission component; 131. Driven protrusion; 132. Connecting shaft; 14. Arc-shaped through hole; 15. Bottom shell; 16. Top cover; 17. Front shell; 20. Hinge assembly; 21. First link; 22. Second link; 221. First side arm; 222. Second side arm; 23. Third link; 231. Buffer mating part; 24. Fourth link; 25. Fifth link; 201. First hinge point; 202. Second hinge point; 203. Third hinge point; 204. Fourth hinge point; 205. Connector; 206. Groove; 207. Protrusion; 30. Sliding component; 31. Limiting recess; 311. Pushing surface; 40. Elastic components; 50. Buffer components; 60. First mounting base; 70. Second mounting base; 71. Connecting seat. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing the invention and its embodiments, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to be constructed and operated in a specific orientation.

[0021] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in certain situations to indicate a dependency or connection. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0022] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0023] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, components, or parts (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, components, or parts. Unless otherwise stated, "a plurality of" means two or more.

[0024] The technical solution of the present invention will be further described below with reference to the embodiments and accompanying drawings.

[0025] A multi-link support mechanism for a chute, see [link]. Figures 1-2 It includes a mounting base 10, a hinge assembly 20, a transmission assembly, and a spring assembly 40.

[0026] The mounting base 10 is used to connect to the first mounting base 60. (See also...) Figures 3-8 The mounting base 10 is provided with a guide groove 101. The hinge assembly 20 includes a first link 21, a second link 22, and a third link 23. The first end of the first link 21 is slidably hinged to the guide groove 101, that is, the first end of the first link 21 is hinged to the guide groove 101 and can move along the guide groove 101; the second end of the first link 21 is used to hinge to the second mounting base 70 to form a first hinge point 201. The second link 22 is arranged to cross the first link 21, and the second link 22 and the first link 21 are hinged at their intersection to form a second hinge point 202. The first end of the second link 22 is hinged to the mounting base 10, and the second end of the second link 22 is hinged to the first end of the third link 23 to form a third hinge point 203. The second end of the third link 23 is hinged to the second mounting base 70 to form a fourth hinge point 204. The lines connecting the first hinge point 201, the second hinge point 202, the third hinge point 203, and the fourth hinge point 204 form a quadrilateral. A transmission assembly is provided on the mounting base 10 for transmission engagement with the first mounting base 60. A spring assembly 40 is provided on the mounting base 10, and the spring assembly 40 acts on the transmission assembly to maintain the open / closed state of the second mounting base 70.

[0027] The above multi-link support mechanism forms a stable triangular support structure through the hinged portion between the first end of the first link 21 and the mounting base 10, the hinged portion between the first end of the second link 22 and the mounting base 10, and the second hinge point 202 between the first link 21 and the second link 22. In this way, the overall structure of the hinge assembly 20 has strong stability on the mounting base 10, and thus, the second mounting base 70 hinged to the first link 21 and the third link 23 has strong stability. The first hinge point 201 formed by the first end of the first link 21 and the second mounting base 70, the second hinge point 202 formed by the cross arrangement of the first link 21 and the second link 22, the third hinge point 203 formed by the first end of the third link 23 and the second end of the second link 22, and the fourth hinge point 204 formed by the second end of the third link 23 and the second mounting base 70, the line connecting the four hinge points forms a quadrilateral. During the process of the second mounting base 70 rotating to the open state, the quadrilateral unfolds from the close-fitting and folded state (closed state), gradually becomes a rectangle, and then becomes the close-fitting and folded state (maximum opening angle). Similarly, during the process of the second mounting base 70 rotating to the closed state, the quadrilateral unfolds from the close-fitting and folded state (maximum opening angle), gradually becomes a rectangle, and then becomes the close-fitting and folded state (closed state).

[0028] When the first mounting base 60 rotates from the closed state to the open state, the force acting on the first mounting base 60 is transmitted to the first link 21 and the third link 23, and then to the second link 22. Finally, the first link 21, the second link 22, and the third link 23 rotate as a whole to the open state. During this process, the first end of the first link 21 slides along the guide groove 101. Within a certain range of opening angles, the elastic component 40 acts on the hinge component 20 through the transmission component, enabling the first mounting base 60 to maintain its opening angle.

[0029] Similarly, when the first mounting base 60 rotates from the open state to the closed state, the force acting on the first mounting base 60 causes the first connecting rod 21, the second connecting rod 22, and the third connecting rod 23 to rotate to the closed state. During this process, the first end of the first connecting rod 21 moves in the opposite direction within the slide groove. In the closed state, the elastic component 40 acts on the hinge component 20 through the transmission component, enabling the first mounting base 60 to maintain a stable closed state.

[0030] The above-described quadrilateral overall layout is achieved through the cross arrangement of the first link 21 and the second link 22, and the four hinge points. Simultaneously, the first end of the first link 21 is slidably hinged to the guide groove 101. Ultimately, only three links are used to achieve a stable connection between the hinge assembly 20 and the mounting base 10. This also enables the second mounting base 70 to unfold and close under the quadrilateral link structure. With fewer links, the structure is simpler and more compact compared to structures with four or more links. This greatly alleviates the problem of interference between links affecting the folding effect of the hinge assembly and preventing the second mounting base 70 from closing to the first mounting base 60 in the closed state. In other words, with this solution, the links of the hinge assembly 20 will not significantly affect each other when rotated to the closed state, allowing the second mounting base 70 to rotate to the closed state, resulting in better performance. With fewer connecting rods, the assembly clearance of the connecting rods is relatively larger in the folded state. When machining the connecting rods, the assembly accuracy can be met without high-precision machining. In other words, the machining accuracy requirements and machining equipment requirements of the connecting rods are reduced.

[0031] Because a guide groove 101 is provided on the mounting base 10, and the first end of the first connecting rod 21 is slidably hinged to the guide groove 101, that is, the first end of the first connecting rod 21 is hinged to the guide groove 101 and can move along the guide groove 101, the force acting on the first connecting rod 21 during the opening and closing of the second mounting base 70 can be decomposed into a first component force along the direction of the guide groove 101 and a second component force perpendicular to the guide groove 101. Since the first end of the first connecting rod 21 can move along the guide groove 101 during the opening and closing process, the first component force is effectively decomposed. In other words, the guide groove 101 can unload the force on the first connecting rod 21, thereby reducing the operating resistance during the opening and closing process and making opening and closing more effortless.

[0032] It can be seen that the guide groove 101 not only serves as a connecting structure for the first end of the first connecting rod 21 and as one of the supporting structures of the triangular support structure, but more importantly, it also serves as a force-relieving structure to remove the first component force of the first connecting rod 21 along the direction of the guide groove 101 during the opening and closing process, thereby reducing the operating resistance during the opening and closing process and making the opening and closing more effortless.

[0033] In addition, the force on the first link 21 is decomposed by the guide groove 101, and the downward load generated during the opening and closing process is removed in the groove as the first component force, leaving only the second component force that drives the first link 21 to rotate. This prevents the first link 21 from transmitting downward pressure to the second link 22, which greatly alleviates the problem of the hinge part between the second link 22 and the mounting base 10 bearing excessive radial force for a long time, resulting in damage and breakage of the connection part, and improves the reliability of the hinge part between the second link 22 and the mounting base 10.

[0034] In one implementation, the first assembly base is a cabinet, and the second assembly base is a door. Of course, the first assembly base can also be a wall or curtain wall, and the second assembly base can be a window; specific application scenarios will not be listed one by one.

[0035] In this embodiment, the second mounting base 70 is provided with a connecting seat 71, and the first connecting rod 21 and the third connecting rod 23 are connected to the connecting seat 71.

[0036] In one implementation, see Figures 3-4 The second link 22 includes a first side arm 221 and a second side arm 222. The first side arm 221 and the second side arm 222 are arranged opposite to each other and intersect with the first link 21. The first end of the first side arm 221 and the first end of the second side arm 222 are both hinged to the mounting base 10. The second end of the first side arm 221 and the second end of the second side arm 222 are both hinged to the first end of the third link 23. The first link 21 and the third link 23 are located between the first side arm 221 and the second side arm 222 and are held by the first side arm 221 and the second side arm 222. Setting the second link 22 as a double-arm structure to clamp the first link 21 and the third link 23 has two advantages. First, it can effectively improve the overall structural strength of the second link 22. Second, it can improve the overall uniformity of the force on the second link 22, avoiding the problem of uneven force and easy shaking caused by the first link 21 and the third link 23 being connected to only one side of the second link 22. This improves the smoothness of the opening and closing movement of the hinge assembly 20.

[0037] In one embodiment, the first side arm 221 and / or the second side arm 222 are connected to the first connecting rod 21, and / or the first side arm 221 and / or the second side arm 222 are connected to the third connecting rod 23 via a hinged structure. That is, both the first side arm 221 and the second side arm 222 are connected to the first connecting rod 21 via a hinged structure, or only one of the first side arm 221 and the second side arm 222 is connected to the first connecting rod 21 via a hinged structure; similarly, both the first side arm 221 and the second side arm 222 are connected to the third connecting rod 23 via a hinged structure, or only one of the first side arm 221 and the second side arm 222 is connected to the third connecting rod 23 via a hinged structure. In this embodiment, both the first side arm 221 and the second side arm 222 are hinged to the first connecting rod 21, and both the first side arm 221 and the second side arm 222 are hinged to the third connecting rod 23 via a hinged structure. Specifically regarding the hinged structure: The hinge structure includes a first protrusion, a second protrusion, and a connector 205. The first protrusion is located on the first side arm 221, and the second protrusion is located on the second side arm 222. The first protrusion and the second protrusion are arranged opposite to each other, and the first protrusion and the second protrusion abut against the opposite sides of the corresponding connecting rod. The connector 205 is used to hinge the first protrusion, the second protrusion, and the corresponding connecting rod.

[0038] During assembly, the first connecting rod 21 and the third connecting rod 23 are positioned between the first side arm 221 and the second side arm 222. Taking the first connecting rod 21 as an example, the first connecting rod 21 is held by a first protrusion on the first side arm 221 and a second protrusion on the second side arm 222. Simultaneously, the first and second protrusions remain opposite to each other. Finally, the first protrusion, the second protrusion, and the first connecting rod 21 are hinged together by the connector 205. The third connecting rod 23 is also hinged to the first side wall 221 and the second side wall 222 using the same structure.

[0039] By providing a first protrusion on the first side arm 221 and a second protrusion on the second side arm 222, the first and second protrusions are hinged and in contact with the corresponding connecting rods. Compared with the entire side arm contacting the connecting rod, the contact area during the hinge process is reduced, thereby reducing friction and improving the smoothness of rotation between the first side arm 221, the second side arm 222 and the corresponding connecting rod.

[0040] In one embodiment, both the first side arm 221 and the second side arm 222 are partially recessed towards the first connecting rod 21, forming a groove 206 on the side away from the first connecting rod 21 and a protrusion 207 on the side closer to the first connecting rod 21. The protrusion 207 on the first side arm 221 is the aforementioned first protrusion, and the protrusion 207 on the second side arm 222 is the aforementioned second protrusion. The two ends of the connector 205 are respectively fixed in the groove 206 of the first side arm 221 and the groove 206 of the second side arm 222.

[0041] Grooves 206 are machined into the first side arm 221 and the second side arm 222. On the one hand, this forms the aforementioned protrusion 207, enabling the hinge connection between the first side arm 221, the second side arm 222, and the corresponding connecting rod. On the other hand, after the connector 205 is assembled, both ends can be accommodated within the grooves 206, preventing it from being exposed and interfering with other structures, thus affecting the assembly of the hinge assembly 20. Furthermore, after the ends of the connector 205 are fixed within the grooves 206, they can act as a reinforcing structure to support the groove walls of the grooves 206, preventing the hinge assembly 20 from swaying left and right during use and from squeezing the protrusion 207, causing the protrusion 207 to sink and resulting in a larger gap between the first side arm 221, the second side arm 222, and the connecting rod. This would lead to the hinge assembly 20 and the second assembly base swaying left and right, thus improving the stability and reliability of the hinge assembly 20.

[0042] In this embodiment, the groove 206 and protrusion 207 structures on the first side arm 221 and the second side arm 222 can be manufactured by stamping. The connector 205 can be a rivet, which passes through the first side arm 221, the corresponding connecting rod and the second side arm 222, and its two ends are riveted into the groove 206 and closely attached to the groove wall of the groove 206.

[0043] In one embodiment, the mounting base 10 includes a first cover 11 and a second cover 12 that are fastened together, forming an installation cavity with an opening between the first cover 11 and the second cover 12. The first end of the second connecting rod 22 is connected to the installation cavity through the opening. The first cover 11 is provided with a first sliding groove 111, and the second cover 12 is provided with a second sliding groove 121. The second sliding groove 121 is disposed opposite to the first sliding groove 111, together forming the aforementioned guide groove 101. The first end of the first connecting rod 21 is slidably hinged to the first sliding groove 111 and the second sliding groove 121, and the opposite sides of the first end of the first connecting rod 21 abut against the inner walls of the first cover 11 and the second cover 12, respectively; at the same time, the opposite sides of the first end of the second connecting rod 22 abut against the inner walls of the first cover 11 and the second cover 12, respectively.

[0044] Through the first cover 11 and the second cover 12, the first ends of the first connecting rod 21 and the second connecting rod 22 can be connected to the two covers. After the third connecting rod 23 is connected to the second connecting rod 22, the hinge assembly 20 completes its initial assembly. Subsequent assembly processes only require assembling this structure with other structures. Since the opposite sides of the first ends of the first connecting rod 21 and the first ends of the second connecting rod 22 are in contact with the inner walls of the first cover 11 and the second cover 12, the clamping and limiting effect of the double covers can further constrain the first connecting rod 21 and the second connecting rod 22, preventing these two connecting rods from swaying left and right, and improving the stability of the hinge assembly 20.

[0045] Regarding the connection structure between the first connecting rod 21 and the second connecting rod 22 and the first cover 11 and the second cover 12, specifically: the first end of the first connecting rod 21 is provided with pins extending from its opposite sides. When the first cover 11 and the second cover 12 are closed, the pins on both sides are respectively engaged in the first sliding groove 111 and the second sliding groove 121. Both pins on both sides of the first connecting rod 21 are fitted with annular bodies. The first connecting rod 21 abuts against the inner wall of the corresponding cover through the annular bodies to prevent the first end of the first connecting rod 21 from wobbling left and right (i.e., along the pin axis). Since the first end of the first connecting rod 21 only contacts the corresponding cover through the annular bodies, this is a smaller contact area compared to the first connecting rod 21 located in the mounting cavity, which contacts the inner wall of the cover. This reduces the friction between the first connecting rod 21 and the cover, and improves the smoothness of the rotation of the first connecting rod. The first cover 11 and the second cover 12 are partially recessed to form the groove 206 and protrusion 207 structures described above. The first end of the first side arm 221 and the first end of the second side arm 222 are both connected to the protrusion of the cover by rivets. The connection structure between the second connecting rod 22 and the cover is the same as the hinge structure described above, and will not be described in detail here.

[0046] In one embodiment, the first end of the third link 23 extends away from its second end to form a buffer engagement portion 231. The multi-link support mechanism also includes a buffer assembly 50, which is used to abut against the buffer engagement portion 231 during the closing process of the second mounting base 70. In the final stage of the rotation of the second mounting base 70 from the open state to the closed state, the buffer engagement portion 231 gradually abuts against the buffer assembly 50. Through the buffering, damping, and deceleration effect of the buffer assembly 50, the impact force during the closing process is weakened, which reduces long-term impact wear of the components and also reduces noise caused by impact during closing.

[0047] The buffer assembly 50 can be a cylinder, hydraulic cylinder, elastic component (such as a spring), etc., and is located inside the mounting base 10.

[0048] In one embodiment, the transmission assembly includes a rotary transmission member 13, a fourth link 24, a fifth link 25, and a sliding member 30. The rotary transmission member 13 is rotatably mounted on the mounting base 10 and has a driven protrusion 131. The first end of the fourth link 24 is fixed to the rotary transmission member 13 and can rotate circumferentially synchronously with the rotary transmission member 13. The second end of the fourth link 24 is hinged to the first end of the fifth link 25, and the second end of the fifth link 25 is hinged to the second mounting base 70, forming a double-link linkage transmission structure. The sliding member 30 is slidably mounted within the mounting base 10 and has a pushing surface 311, which abuts against the outer peripheral wall of the driven protrusion 131. The driven protrusion 131 slides against the pushing surface 311 when the rotary transmission member 13 rotates, so that the second mounting base 70 is maintained in its open / closed state by the fourth link 24 and the fifth link 25.

[0049] During the closing process of the second mounting base 70, or during the opening process to a certain range of opening angle, the second mounting base 70 drives the fifth link 25 to swing, which in turn drives the fourth link 24 to rotate around the rotation axis of the rotary transmission component 13, and the rotary transmission component 13 and the fourth link 24 rotate synchronously. Because the rotary transmission member 13 is provided with a driven protrusion 131, when the rotary transmission member 13 rotates, the driven protrusion 131 rotates around the rotation axis of the rotary transmission member 13. During this process, the driven protrusion 131 slides with the pushing surface 311, that is, the outer peripheral wall of the driven protrusion 131 slides relative to the pushing surface 311 of the slider 30. Furthermore, under the elastic force of the elastic component 40, the pushing surface 311 of the slider 30 can continuously abut against the outer peripheral wall of the driven protrusion 131. Thus, the second mounting base 70 is maintained in its closed state and in its open state within a certain range of opening angles by the fourth link 24 and the fifth link 25, satisfying the usage requirement of the second mounting base 70 to be suspended at any angle within a certain range of opening angles.

[0050] The double-link transmission structure of the fourth link 24 and the fifth link 25 not only cooperates with the rotary transmission component 13 and the elastic component 40 to keep the second mounting base 70 in a stable closed state and an open state with a certain range of opening angles, meeting the hovering requirements after the second mounting base 70 is opened, but also the fourth link 24 and the fifth link 25 further serve as a support structure for the second mounting base 70, assisting the hinge assembly 20 in supporting the second mounting base 70. Compared with the hinge assembly 20 supporting the second mounting base 70 alone, this reduces the load on the hinge assembly 20, avoids the hinge assembly 20 bearing the load alone for a long time, and prevents fatigue damage and breakage at the hinge point, thereby improving the service life of the hinge assembly 20 and the reliability of the multi-link support mechanism.

[0051] It is understood that the term "driven" in the aforementioned driven protrusion 131 refers to the fact that, when maintaining the closed state and the open state, the driven protrusion 131 is abutted by the pushing surface 311 of the sliding member 30, thereby restricting the rotation of the rotary transmission member 13, and consequently restricting the swinging of the fourth link 24 and the fifth link 25, thus maintaining the state of the second mounting base 70. In this process, the driven protrusion 131 is a driven structure relative to the pushing surface 311.

[0052] Specifically, for the aforementioned transmission assembly, the rotary transmission member 13 and the driven protrusion 131 provided on the rotary transmission member 13 form a cam, which is rotatably connected within the mounting base 10. The sliding member 30 has a plate-like structure and is slidably disposed within the mounting base 10, capable of moving along the opening and closing direction of the hinge assembly 20. The sliding member 30 is provided with a limiting recess 31, which can be, for example, a through groove or a blind groove; the inner wall of the limiting recess 31, on the side closer to the hinge assembly 20, is the aforementioned pushing surface 311, which is an arc-shaped surface. One end of the elastic component 40 is connected within the mounting base 10, and the other end of the elastic component 40 is connected to the side of the sliding member 30 away from the hinge assembly 20, so as to apply a continuous pulling force to the sliding member 30. The rotary transmission component 13 is located in the limiting recess 31. Under the elastic force of the elastic component 40, the pushing surface 311 of the limiting recess 31 continuously abuts against the outer peripheral wall of the driven protrusion 131.

[0053] like Figure 10 As shown, the second mounting base 70 rotates to the fully open state. In this state, the first end of the first link 21 is located at the top of the guide groove 101 in the figure, and the center of the driven protrusion 131 is located above the rotation axis of the rotary transmission member 13 in the figure. Under the action of the elastic component 40, the pushing surface 311 of the sliding member 30 continuously abuts against the driven protrusion 131 to the right in the figure, so that the second mounting base 70 maintains its fully open state under the action of the fifth link 25 and the fourth link 24. This state is the first hovering state.

[0054] like Figure 11 As shown, the second mounting base 70 rotates a certain angle in the closing direction, but remains in a hovering state; this hovering state is the second hovering state. During the rotation from the first hovering state to the second hovering state, the first end of the first connecting rod 21 moves along the lower side of the guide groove 101 shown in the figure. Simultaneously, the included angle between the fifth connecting rod 25 and the fourth connecting rod 24 decreases, and the fourth connecting rod 24 rotates counterclockwise, driving the rotary transmission member 13 and the driven protrusion 131 to rotate counterclockwise. During the rotation of the driven protrusion 131, its outer peripheral wall pushes the sliding member 30 to the left side shown in the figure, stretching the elastic component 40. Similar to the fully open state, at this time, the center of the driven protrusion 131 is located above the rotation axis of the rotary transmission member 13 shown in the figure, and under the action of the elastic component 40, it can maintain this second hovering state.

[0055] like Figure 12 As shown, the second mounting base 70 continues to rotate in the closing direction. At this time, the first end of the first connecting rod 21 moves along the lower side of the guide groove 101 shown in the figure. Simultaneously, the included angle between the fifth connecting rod 25 and the fourth connecting rod 24 decreases, and the fourth connecting rod 24 rotates counterclockwise, driving the rotary transmission member 13 and the driven protrusion 131 to rotate counterclockwise. During the rotation of the driven protrusion 131, its outer peripheral wall continues to push the sliding member 30 to the left in the figure, and the elastic component 40 is further stretched. In this state, the center of the driven protrusion 131 and the rotation axis of the rotary transmission member 13 are located on the same horizontal line in the figure, and the second mounting base 70 is in a critical state. The range between the critical state and the fully open state of the second mounting base 70 is the aforementioned certain range of opening angles, within which the second mounting base 70 can be in a suspended state.

[0056] like Figure 13 As shown, the second mounting base 70 continues to rotate in the closing direction until the first end of the first link 21 slides to the lower end of the guide groove 101 shown in the figure. At the same time, the fifth link 25 and the fourth link 24 completely retract, so that the second mounting base 70 is in a closed state. During the rotation to the closed state, the elastic force of the elastic component 40 continuously pushes the outer peripheral wall of the driven protrusion 131 to the right side shown in the figure. This elastic force not only assists in pushing the second mounting base 70 to close, allowing the user to push the second mounting base 70 to close with relatively less force, making the operation easier, but also ensures that the second mounting base 70 is in a stable closed state.

[0057] As the second mounting base 70 rotates sequentially from the first hovering state to the second hovering state, the critical state, and the closed state, the hinge assembly 20 also rotates and retracts accordingly.

[0058] In one embodiment, the elastic assembly 40 includes multiple springs arranged side by side, all of which are connected to the mounting base 10 via a connecting block, and the other end of all the springs is connected to the slider 30.

[0059] In one embodiment, the fourth link 24 and the fifth link 25 are detachably disposed outside the mounting base 10. The two links are arranged integrally in the outer area of ​​the mounting base 10. With this arrangement, the manufacturer can disassemble the two links as needed, avoiding the situation where the two links are connected to the mounting base 10 and protrude outside the mounting base 10 in a closed state, resulting in a large overall space occupation and reduced space utilization during transportation.

[0060] In one embodiment, the mounting base 10 further includes a bottom shell 15, a top cover 16, and a front shell 17. The top cover 16 is detachably connected (by screws, snap-fit, etc.) to the bottom shell 15, forming an installation space between the bottom shell 15 and the top cover 16. The aforementioned rotary transmission component 13, sliding component 30, and elastic component 40 are disposed within this installation space. The top cover 16 has clearance holes at positions opposite to the rotary transmission component 13 and opposite to the elastic component 40. Thus, after the top cover 16 is connected to the bottom shell 15, it can both restrict the rotary transmission component 13, sliding component 30, and elastic component 40, and allow for clearance through the clearance holes. The front shell 17 is detachably connected to the outside of the top cover 16 to cover the structures exposed through the clearance holes.

[0061] In one embodiment, the mounting base 10 is provided with an arc-shaped through hole 14, specifically, the faceplate 17 is provided with an arc-shaped through hole 14, the curvature of which is adapted to the rotation trajectory of the rotary transmission component 13. A connecting shaft 132 is provided on the driven protrusion 131, and the connecting shaft 132 is slidably disposed within the arc-shaped through hole 14, with its free end fixedly connected to the first end of the fourth connecting rod 24. By relying on the arc-shaped through hole 14 to limit the stroke of the connecting shaft 132, the rotation angle range of the rotary transmission component 13 can be precisely constrained, preventing excessive rotation from causing the connecting rod to bend or the structure to jam, while simultaneously improving the motion guidance during the transmission process.

[0062] The technical means disclosed in this invention are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this invention, and these improvements and modifications are also considered within the scope of protection of this invention.

Claims

1. A multi-link support mechanism with a sliding groove, characterized in that, include: Mounting base, the mounting base being used to connect to the first mounting base, the mounting base being provided with a guide groove; A hinge assembly includes a first link, a second link, and a third link; a first end of the first link is slidably hinged to the guide groove, and a second end of the first link is hinged to a second mounting base to form a first hinge point; the second link is intersected with the first link, and the second link and the first link are hinged at their intersection to form a second hinge point; a first end of the second link is hinged to the mounting base, and a second end of the second link is hinged to the first end of the third link to form a third hinge point; a second end of the third link is hinged to the second mounting base to form a fourth hinge point; the lines connecting the first hinge point, the second hinge point, the third hinge point, and the fourth hinge point form a quadrilateral; A transmission assembly is disposed on the mounting base and is used for transmission engagement with the first mounting base; An elastic component is provided on the mounting base, and the elastic force of the elastic component acts on the transmission component so that the second mounting base can maintain its open or closed state.

2. The multi-link support mechanism of the slide groove according to claim 1, characterized in that: The second link includes a first side arm and a second side arm, the first side arm and the second side arm are arranged opposite to each other, and the first link and the third link are arranged between the first side arm and the second side arm; The first side arm and the second side arm are both arranged to cross the first connecting rod. The first end of the first side arm and the first end of the second side arm are both hinged to the mounting base. The second end of the first side arm and the second end of the second side arm are both hinged to the first end of the third connecting rod.

3. The multi-link support mechanism of the slide groove according to claim 2, characterized in that: The first side arm and the second side arm are connected to the first link, and / or the first side arm and the second side arm are connected to the third link by a hinge structure; The hinge structure includes a first protrusion, a second protrusion, and a connector. The first protrusion is disposed on the first side arm, and the second protrusion is disposed on the second side arm. The first protrusion and the second protrusion are disposed opposite to each other, and the first protrusion and the second protrusion respectively abut against the opposite sides of the corresponding connecting rod. The connector is used to hinge the first protrusion, the second protrusion, and the corresponding connecting rod.

4. The multi-link support mechanism of the slide groove according to claim 3, characterized in that: The first side arm and / or the second side arm are partially recessed toward the first connecting rod, so that the first side arm and / or the second side arm form a groove on the side away from the first connecting rod and a protrusion on the side close to the first connecting rod; The two ends of the connector are respectively fixed in the groove of the first side arm and the groove of the second side arm.

5. The multi-link support mechanism for the slide groove according to claim 1, characterized in that: The mounting base includes a first cover and a second cover that are snapped together, with an opening forming a mounting cavity between the first cover and the second cover; The first cover is provided with a first sliding groove, and the second cover is provided with a second sliding groove, the second sliding groove being arranged opposite to the first sliding groove; The first end of the first connecting rod is slidably hinged to the first slide groove and the second slide groove, and the opposite sides of the first end of the first connecting rod respectively abut against the inner wall of the first cover and the inner wall of the second cover. The two opposite sides of the first end of the second connecting rod abut against the inner wall of the first cover and the inner wall of the second cover, respectively.

6. The multi-link support mechanism of the slide groove according to claim 1, characterized in that: The first end of the third link extends away from its second end to form a buffer mating part; The multi-link support mechanism of the slideway also includes a buffer assembly, which is used to abut against the buffer mating part during the closing process of the second mounting base.

7. The multi-link support mechanism of the slide groove according to claim 1, characterized in that: The transmission assembly includes a rotary transmission component, a fourth link, a fifth link, and a sliding component; The rotary transmission component is rotatably mounted on the mounting base, and the rotary transmission component is provided with a driven protrusion; The first end of the fourth link is fixed to the rotary transmission component, the second end of the fourth link is hinged to the first end of the fifth link, and the second end of the fifth link is used to hinge to the second mounting base; The sliding member has a pushing surface, which abuts against the outer peripheral wall of the driven protrusion; the elastic component provides an elastic force to the sliding member to drive the pushing surface to abut against the driven protrusion; the driven protrusion slides against the pushing surface when the rotary transmission member rotates, so as to maintain the second mounting base in its open or closed state through the fourth and fifth links.

8. The multi-link support mechanism of the slide groove according to claim 7, characterized in that: The fourth and fifth links are detachably located outside the mounting base.

9. The multi-link support mechanism of the slide groove according to claim 8, characterized in that: The mounting base is provided with an arc-shaped through hole; The driven protrusion is provided with a connecting shaft, which is slidably disposed in the arc-shaped through hole, and the free end of the connecting shaft is connected to the first end of the fourth connecting rod.

10. The multi-link support mechanism of the slide groove according to claim 7, characterized in that: The slider is provided with a limiting recess, and the inner sidewall of the limiting recess includes the pushing surface; The rotary transmission component and the driven protrusion are disposed within the limiting recess.

Images