Hinge device and refrigeration equipment

Abstract

The utility model provides a hinge device and refrigeration equipment, and the hinge device comprises a fixed hinge part which is used for being fixed on a box body; one end of the connecting rod assembly is movably connected to the fixed hinge piece, and the other end of the connecting rod assembly is used for being connected to a door body; the power assisting mechanism is provided with a rotating end and a force applying end, the rotating end is rotationally connected to the fixed hinge piece, the force applying end is opposite to the rotating end and used for acting on one connecting rod in the connecting rod assembly, the force applying end is provided with a limiting shaft, the fixed hinge piece is provided with a limiting groove, and when the power assisting mechanism rotates around the rotating end, the limiting shaft is driven by the limiting groove to rotate. The limiting shaft moves in the limiting groove; the corresponding power-assisted door closing angle / power-assisted door opening angle and the disengaging angle of the power-assisted mechanism and the connecting rod assembly can be controlled by setting the track and the length of the limiting groove, and the smoothness of door opening and closing is improved.

Description

Technical Field

[0001] The present application relates to the technical field of refrigeration equipment, and in particular to a hinge device and a refrigeration equipment having the hinge device. Background Art

[0002] With the development of society and the gradual improvement of the quality of life, people's demand for the aesthetics of home decoration has become increasingly prominent. It has become popular to embed refrigeration equipment (such as refrigerators) into external environmental parts, such as cabinets, walls, etc., that is, to form embedded refrigeration equipment to achieve a unified home decoration style. However, the door body of traditional refrigeration equipment is set to rotate around a fixed axis to open / close. During the rotation of the door body, the pivot end of the door body will protrude toward the external environmental parts, causing interference with the external environmental parts, affecting the opening of the door body and affecting the use of the refrigeration equipment.

[0003] Some existing refrigeration equipment uses a hinge device with a connecting rod assembly to movably connect the door body to the box body. When the door body is opened relative to the box body, the door body rotates and translates along a preset trajectory under the drive of the connecting rod assembly. The structure is simple and can avoid interference between the door body and external environmental parts.

[0004] On the basis of adopting a hinge device with a connecting rod assembly, since the refrigeration equipment is cooled internally, if the door body is not closed tightly, it is easy to cause the cold air inside the refrigeration equipment to leak, causing the food in the refrigeration equipment to rot, and also waste a lot of electricity. Therefore, it is necessary to set a door closer between the door body and the box body.

[0005] The commonly used door closer structures at this stage are such as the elastic booster device in the Chinese invention patent application No. CN103924854A, and the structure and boosting effect are relatively stable. However, as shown in the Chinese invention patent application No. CN103924854A, the current limit grooves that cooperate with the elastic booster are all set as long straight grooves extending along the deformation direction of the elastic booster. The setting of the long straight grooves makes the general boosting door closing angle smaller. At the same time, before the elastic booster realizes the boosting door closing stage, the user needs to use a large force to compress the spring in the elastic booster, and the stroke of the user's compression of the spring is consistent with the stroke of the spring when the boosting door closing is finally realized, which is inconvenient for the user to operate, and may even cause the door body to rebound and open because the user does not compress the spring in place, affecting the user's experience. Utility Model Content

[0006] The present application provides a hinge device and a refrigeration device having the same.

[0007] In order to achieve the above-mentioned purpose, the technical solution provided by the present application is as follows: a hinge device, comprising:

[0008] A fixed hinge, wherein the fixed hinge is used to be fixed to the box body;

[0009] A connecting rod assembly, one end of which is movably connected to the fixed hinge, and the other end of which is connected to the door body;

[0010] The power-assisting mechanism comprises a rotating end rotatably connected to the fixed hinge component, and a force-applying end opposite to the rotating end and used to act on a connecting rod in the connecting rod assembly, the force-applying end has a limiting shaft, and the fixed hinge component has a limiting groove. When the power-assisting mechanism rotates around the rotating end, the limiting shaft moves in the limiting groove.

[0011] As a further improvement of the present application, the limit groove has a relative starting position and a terminal position. When the connecting rod assembly is in a folded state, the limit shaft is located at the starting position. When the connecting rod assembly switches from the folded state to the unfolded state, the connecting rod assembly drives the limit shaft to move toward the terminal position. From the starting position toward the terminal position, the distance between the limit groove and the rotating end gradually decreases.

[0012] In which, the connecting rod in the connecting rod assembly that acts on the force-applying end has a first rotation axis, and the connecting rod assembly is connected to a protruding block that acts on the force-applying end. When the limit shaft is located at the terminal position, the center of curvature of the abutting surface of the protruding block and the force-applying end is located on the first connecting line between the first rotation axis and the rotation axis of the rotating end or on the side of the first connecting line toward the starting position.

[0013] As a further improvement of the present application, the terminal position has a limiting portion for limiting the limiting axis.

[0014] As a further improvement of the present application, the limit groove has a relative starting position, a terminal position, and a transition position between the starting position and the terminal position; when the connecting rod assembly is in a folded state, the limit shaft is located at the starting position; when the connecting rod assembly switches from the folded state to the unfolded state, the connecting rod assembly drives the limit shaft to move toward the terminal position; from the starting position toward the transition position, the distance between the limit groove and the rotating end gradually decreases; from the transition position toward the terminal position, the distance between the limit groove and the rotating end gradually increases;

[0015] Among them, the connecting rod in the connecting rod assembly that acts on the force-applying end has a first rotation axis, and the connecting rod assembly is connected to a protruding block that acts on the force-applying end. When the limit shaft is located at the transition position, the center of curvature of the abutting surface of the protruding block and the force-applying end is located on the first connecting line between the first rotation axis and the rotation axis of the rotating end.

[0016] As a further improvement of the present application, the connecting rod assembly is connected with a protruding block acting on the force-applying end; a second connecting line is provided between the rotation axis of the rotating end and the center of curvature of the abutting surface of the protruding block and the force-applying end; the connecting rod in the connecting rod assembly acting on the force-applying end has a first rotation axis, and a first connecting line is provided between the first rotation axis and the rotation axis of the rotating end;

[0017] When the connecting rod assembly is in a folded state, an included angle α1 between the first connecting line and the second connecting line is no greater than 60°.

[0018] As a further improvement of the present application, the connecting rod in the connecting rod assembly acting on the force-applying end has a first rotation axis, and a first connecting line is formed between the first rotation axis and the rotation axis of the rotating end; the connecting rod assembly is connected to a protruding block acting on the force-applying end, and a third connecting line is formed between the center of curvature of the abutting surface of the protruding block abutting the force-applying end and the first rotation axis;

[0019] When the connecting rod assembly is in a folded state, an angle α2 between the third connecting line and the first connecting line is not less than 5°.

[0020] As a further improvement of the present application, the connecting rod in the connecting rod assembly that acts on the force-applying end is connected to a protruding block for abutting the force-applying end; a second connecting line is provided between the rotation axis of the rotating end and the center of curvature of the abutting surface of the protruding block and the force-applying end; and the axis of the limiting axis is located on the second connecting line.

[0021] As a further improvement of the present application, the limiting shaft has a first shaft section located in the limiting groove, and the shaft diameter of the first shaft section is smaller than the groove width of the limiting groove;

[0022] When the power-assisting mechanism and the connecting rod assembly are linked to each other, a gap is provided between the first shaft segment and the groove wall of the limiting groove.

[0023] As a further improvement of the present application, the limit groove has a relative starting position and a terminal position. When the connecting rod assembly is in a folded state, the limit shaft is located at the starting position. When the connecting rod assembly switches from the folded state to the unfolded state, the connecting rod assembly drives the limit shaft to move to the terminal position. The limit groove has a first groove wall away from the rotating end.

[0024] The limiting shaft has a first shaft section located in the limiting groove, and the shaft diameter of the first shaft section is smaller than the groove width of the limiting groove. When the power-assisting mechanism and the connecting rod assembly are linked to each other and the limiting shaft moves from a preset position to a terminal position, the gap between the first shaft section and the first groove wall gradually decreases, wherein the preset position is the starting position or the preset position is located between the starting position and the terminal position.

[0025] As a further improvement of the present application, the limit groove has a relative starting position and a terminal position. When the connecting rod assembly is in a folded state, the limit shaft is located at the starting position. When the connecting rod assembly switches from the folded state to the unfolded state, the connecting rod assembly drives the limit shaft to move to the terminal position.

[0026] The fixed hinge is also provided with a first avoidance hole which is connected with the limiting groove at the starting position.

[0027] As a further improvement of the present application, the limiting shaft has a first shaft segment located in the limiting groove, a second shaft segment coaxial with the first shaft segment and located outside the limiting groove, the shaft diameter of the second shaft segment is larger than the shaft diameter of the first shaft segment, and the groove width of the limiting groove is smaller than the shaft diameter of the second shaft segment; the first avoidance hole is an installation hole, and the hole diameter of the installation hole is not smaller than the shaft diameter of the second shaft segment.

[0028] As a further improvement of the present application, the limiting groove is an arc-shaped groove.

[0029] As a further improvement of the present application, the connecting rod in the connecting rod assembly that cooperates with the force-applying end is connected with a protruding block protruding toward the force-applying end, and the force-applying end acts on the protruding block; the abutting surface between the force-applying end and the protruding block is arc-shaped.

[0030] As a further improvement of the present application, the power assist mechanism includes:

[0031] A rotating seat located at the rotating end, wherein the rotating seat is rotatably connected to the fixed hinge member;

[0032] a driving block located at the force-applying end, the driving block being used to act on a connecting rod in the connecting rod assembly, the limiting shaft being arranged on the driving block;

[0033] An elastic member is disposed between the rotating seat and the driving block, and the elastic member is in a compressed state.

[0034] As a further improvement of the present application, the elastic member is a spring, the power assist mechanism further includes a damping rod, one end of the damping rod is connected to the rotating seat, and the other end is connected to the driving block, and the spring is sleeved on the damping rod.

[0035] As a further improvement of the present application, the fixed hinge member includes a fixed plate for fixing to the box body, two connecting plates connected to opposite ends of the fixed plate, the connecting plates are perpendicular to the fixed plate, the power assist mechanism is arranged between the two connecting plates, and the limiting groove is arranged on the connecting plates;

[0036] The limiting shaft comprises a first shaft segment located in the limiting groove, a second shaft segment coaxial with the first shaft segment and located outside the limiting groove, the shaft diameter of the second shaft segment is larger than the shaft diameter of the first shaft segment, the groove width of the limiting groove is smaller than the shaft diameter of the second shaft segment, and the driving block is provided with a through hole for accommodating the second shaft segment.

[0037] As a further improvement of the present application, the connecting rod assembly includes a first connecting rod rotatably connected to the fixed hinge component, and the force-applying end acts on the first connecting rod.

[0038] As a further improvement of the present application, a protruding block protruding toward the force-applying end is connected to the first connecting rod, and the force-applying end acts on the protruding block; the protruding block is detachably connected to the first connecting rod.

[0039] As a further improvement of the present application, the hinge device includes a rotating shaft that rotatably connects the first connecting rod to the fixed hinge component, and the protruding block is sleeved on the rotating shaft; a limiting structure is also provided between the protruding block and the first connecting rod to limit the rotation of the protruding block relative to the first connecting rod.

[0040] As a further improvement of the present application, the connecting rod assembly further includes:

[0041] A second connecting rod, one end of which is rotatably and slidably connected to the fixed hinge, and the other end of which is rotatably connected to the door body, and the second connecting rod intersects with the first connecting rod and is rotatably connected at the intersection;

[0042] A third connecting rod, one end of which is rotatably connected to the door body, and the other end of which is rotatably connected to an end of the first connecting rod away from the fixed hinge.

[0043] As a further improvement of the present application, the fixed hinge is provided with a slide groove matched with the second connecting rod, the second connecting rod has a guide shaft matched with the slide groove, the slide groove has a first end and a second end opposite to each other, when the connecting rod assembly is in a folded state, the guide shaft is located at the first end, and when the connecting rod assembly is gradually unfolded from the folded state, the guide shaft moves along the slide groove toward the second end;

[0044] The fixed hinge also includes a second avoidance hole at the first end which is connected to the slide groove.

[0045] As a further improvement of the present application, the hinge device also includes a movable hinge member for fixing to the door body, and one end of the connecting rod assembly for connecting to the door body is connected to the movable hinge member.

[0046] In order to achieve the above application purpose, the present application also provides a refrigeration device, including a box body, a door body for opening or closing the box body, and the above hinge device.

[0047] Compared with the prior art, the beneficial effects of the present application are as follows: the hinge device in the present application, on the one hand, by arranging the power-assisting mechanism on the fixed hinge part, can improve the stability and reliability of the interaction force between the power-assisting mechanism and the connecting rod assembly, improve the stability of opening and closing the door, and reduce the impact on the overall volume of the refrigerator; on the other hand, by arranging the limiting groove on the fixed hinge part that cooperates with the power-assisting mechanism so that when the force-applying end acts on the connecting rod assembly, the power-assisting mechanism rotates synchronously around the rotating end, and can control the corresponding power-assisting door closing angle / power-assisting door opening angle and the disengagement angle between the power-assisting mechanism and the connecting rod assembly by setting the trajectory and length of the limiting groove, thereby improving the smoothness of opening and closing the door body. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 It is a structural schematic diagram of a refrigeration device in a specific embodiment of the present application after being embedded in a cabinet;

[0049] Figure 2 yes Figure 1 A schematic structural diagram of the hinge device in the first embodiment of the present application (the connecting rod assembly is in a folded state);

[0050] Figure 3 yes Figure 2 An exploded view of the power assist mechanism in FIG.

[0051] Figure 4 yes Figure 2 A schematic diagram of the structure of the fixed hinge member;

[0052] Figure 5 yes Figure 4 A structural schematic diagram of the fixed hinge member at another angle;

[0053] Figure 6 yes Figure 2 A schematic diagram of the structure in which the power-assisting mechanism and the connecting rod assembly are linked;

[0054] Figure 7 yes Figure 2 Structural diagram of the middle hinge device (the straight limit axis of the connecting rod assembly is located at the terminal position of the limit slot);

[0055] Figure 8 yes Figure 2 A schematic diagram of the structure of the hinge device in FIG. 1 (the connecting rod assembly is unfolded until the connecting rod assembly is separated from the power-assisting mechanism);

[0056] Fig. 9 is a structural schematic diagram of the hinge device in the second embodiment of the present application (the connecting rod assembly is in a folded state);

[0057] Fig.10 yes Fig. 9 Structural diagram of the middle hinge device (the straight limit axis of the connecting rod assembly is located at the transition position of the limit groove);

[0058] Fig.11 yes Fig. 9 Structural diagram of the middle hinge device (the straight limit axis of the connecting rod assembly is located at the terminal position of the limit slot);

[0059] Fig.12 yes Fig. 9 A schematic diagram of the structure of the hinge device in FIG. 1 (the connecting rod assembly is unfolded until the connecting rod assembly is separated from the power-assisting mechanism);

[0060] Wherein: 100, refrigeration equipment; 10, 10a hinge device; 1, fixed hinge; 11, 11a limit groove; 111, first groove wall; A, starting position; B, terminal position; C, transition position; 12, limit part; 13, first avoidance hole; 14, fixed plate; 15, connecting plate; 16, slide groove; 17, second avoidance hole; 2, connecting rod assembly; 21, first connecting rod; D, first hinge point; 22, second connecting rod; 221, guide shaft; 23, third connecting rod; 3, power assist mechanism; M, rotation End; N, force-applying end; 31, limiting axis; 311, first axis section; 312, second axis section; 32, rotating seat; 33, driving block; 331, through hole; 332, stop block; 34, spring; 35, damping rod; 4, movable hinge; 5, protruding block; 51, abutting surface; 6, rotating shaft; 7, limiting structure; 20, box body; 30, door body; L1, first connecting line; L2, second connecting line; L3, third connecting line; F1, first direction; F2, second direction; 200, cabinet; E, center of curvature. DETAILED DESCRIPTION

[0061] The following will be combined with the attached Figure 1-12 The specific embodiments shown are used to describe the present application in detail, but these embodiments do not limit the present application, and any structural, methodological, or functional changes made by a person skilled in the art based on these embodiments are all included in the protection scope of the present application.

[0062] Words expressing position and direction described in this application use the side where the door is located when the refrigerator is normally in use as "front", and the direction away from the refrigerator on the pivot side as "outside". For example, in a double-door refrigerator, the movement of one door from the pivot side away from the other door during the opening process is called outward movement, and the movement of one door from the pivot side toward the other door during the opening process is called inward movement.

[0063] The terms first, second, third, etc. in this application are only used to distinguish similar objects and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. In addition, it should be noted that, unless otherwise clearly specified and limited, the terms "disposed", "connected", and "fixed" should be understood in a broad sense. For example, the connection can be a direct connection or an indirect connection through an intermediate medium, and can be a fixed connection, a movable connection, a detachable connection, or an integral connection. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0064] Unless otherwise stated, the term "plurality" means two or more.

[0065] It should be noted that, in the absence of conflict, the specific embodiments and features of the embodiments disclosed in this application can be combined with each other.

[0066] Combination Figures 1 to 8 As shown, the present application provides a hinge device 10 and a refrigeration device 100 having the hinge device 10. Specifically, the refrigeration device 100 includes a box body 20 for storing articles and a door body 30 for opening or closing the box body 20. The hinge device 10 is used to movably connect the door body 30 to the box body 20 so as to realize opening or closing the box body 20 through the door body 30. When the door body 30 is in a closed state, the door body 30 and the box body 20 are jointly enclosed to form a refrigeration space for storing articles. When the door body 30 is in an open state, it is convenient for users to store articles in or take out articles from the box body 20. Of course, it should be noted that the hinge device 10 in the present application is not limited to the above-mentioned refrigeration device 100, but can also be applied to other household products, such as cabinets, wine cabinets, wardrobes, microwave ovens, etc.

[0067] In this embodiment, the hinge device 10 is specifically described by taking the refrigeration device 100 as a built-in refrigerator for embedding in an external environment, the door body 30 is located at the front side of the box body 20, and the door body 30 is a door that rotates left and right. Figure 1 The figure only shows a partial schematic diagram of a refrigeration device 100 embedded in a cabinet 200 in a specific embodiment of the present application, wherein only the cabinet 200 located on one side is shown. It is known that in actual installation, the refrigeration device 100 is completely embedded in the cabinet 200. Of course, it is understandable that the refrigeration device 100 does not necessarily have to be embedded in the cabinet 200, but can also be embedded in other external environment parts such as the wall.

[0068] Of course, it is known that this is not limiting, and the hinge device 10 in the present application can also be applied to the non-embedded refrigeration device 100, or can also be applied to the refrigeration device 100 with the door body 30 located on the upper side of the box body 20.

[0069] Specifically, the hinge device 10 includes a fixed hinge 1 fixed to the box body 20, a connecting rod assembly 2 connected between the fixed hinge 1 and the door body 30, and a power-assisting mechanism 3 provided on the fixed hinge 1. The connecting rod assembly 2 includes a plurality of connecting rods hinged to each other, one end of the connecting rod assembly 2 is movably connected to the fixed hinge 1, and the other end is connected to the door body 30. When the connecting rod assembly 2 is in a folded state, the plurality of connecting rods are close to each other, and at this time, the door body 30 is in a closed state of closing the box body 20; when the connecting rod assembly 2 is in an unfolded state, the plurality of connecting rods are away from each other, and at this time, the door body 30 is in an open state of opening the box body 20.

[0070] During the process of the connecting rod assembly 2 switching between the folded state and the unfolded state, that is, during the process of the door body 30 rotating to open or rotating to close, the power-assisting mechanism 3 is configured to act on one connecting rod in the connecting rod assembly 2 at least at a certain stage, and assist the connecting rod assembly 2 to switch to the folded state or to switch to the unfolded state through the connecting rod. When the power-assisting mechanism 3 can assist the connecting rod assembly 2 to switch to the folded state, the power-assisting mechanism 3 has the function of assisting the door closing; when the power-assisting mechanism 3 can assist the connecting rod assembly 2 to switch to the unfolded state, the power-assisting mechanism 3 has the function of assisting the door opening.

[0071] In the present application, the power-assisting mechanism 3 is arranged on the fixed hinge 1. After the hinge device 10 is installed between the box body 20 and the door body 30, the fixed hinge 1 is far away from the door body 30. Therefore, the possibility of the fixed hinge 1 being deformed by the gravity of the door body 30 is small, thereby improving the stability and reliability of the interaction force between the power-assisting mechanism 3 and the connecting rod assembly 2, and improving the stability of opening and closing the door; on the other hand, compared with the existing method of arranging the power-assisting mechanism 3 on the connecting rod assembly 2, the power-assisting mechanism 3 in the present application and the connecting rods in the connecting rod assembly 2 are arranged side by side in the horizontal direction, and are arranged at a position on the fixed hinge 1 that will not interfere with the connecting rod assembly 2, thereby releasing the space at the connecting rod assembly 2, so that the volume and thickness of each connecting rod in the connecting rod assembly 2 can be made smaller, thereby reducing the overall thickness of the hinge device 10, saving installation space, and greatly reducing the width of the beam on the box body 20 for installing the hinge device 10, thereby reducing the impact on the overall volume of the refrigerator.

[0072] Furthermore, combined with Figure 2 As shown, the power-assisting mechanism 3 has a rotating end M rotatably connected to the fixed hinge 1, and a force-applying end N arranged opposite to the rotating end M and used to act on a connecting rod in the connecting rod assembly 2. The force-applying end N is provided with a limit shaft 31, and the fixed hinge 1 is provided with a limit groove 11. In the process of opening and closing the door body 30, when the power-assisting mechanism 3 is linked with the connecting rod assembly 2, the power-assisting mechanism 3 rotates around the rotating end M, and the limit shaft 31 moves in the limit groove 11. That is, when the force-applying end N acts on the connecting rod assembly 2, the power-assisting mechanism 3 rotates around the rotating end M synchronously. By setting the trajectory and length of the limit groove 11, the corresponding power-assisting door closing angle / power-assisting door opening angle and the disengagement angle of the power-assisting mechanism 3 and the connecting rod assembly 2 can be controlled, thereby improving the smoothness of the user's opening and closing of the door body 30. For example, it can be known that when the disengagement angle is consistent with the assisted door-closing angle, during the user's door closing stage, before the assisted door-closing stage is achieved by the assisted door-closing mechanism 3, the assisted door-closing mechanism 3 will not apply a force to prevent the door from closing, thereby improving the smoothness of opening and closing the door body 30 and the stability of assisted door closing; even if the disengagement angle is set to be greater than the assisted door-closing angle, the closing force and length required to be applied by the user in the assisted door-closing stage before the assisted door-closing stage during the door closing process can be controlled by setting the trajectory and length of the limit groove 11, thereby improving the smoothness of opening and closing the door body 30.

[0073] It should be noted that the above-mentioned power-assisted door closing angle refers to the rotation angle of the door body 30 after the power-assisted mechanism 3 starts to assist the door closing until the door body 30 is in the closed state during the door closing process. The above-mentioned disengagement angle refers to the rotation angle of the door body 30 when the door body 30 rotates open from the closed state to the time when the power-assisted mechanism 3 is disengaged from the connecting rod assembly 2.

[0074] In a specific embodiment, in combination Figure 3 As shown, the power-assisting mechanism 3 includes a rotating seat 32 located at the rotating end M, a driving block 33 located at the force-applying end N, and an elastic member disposed between the rotating seat 32 and the driving block 33. The rotating seat 32 is rotatably connected to the fixed hinge member 1 so that the power-assisting mechanism 3 can rotate around the rotating end M. The driving block 33 is used to act on a connecting rod in the connecting rod assembly 2, and the limiting shaft 31 is disposed on the driving block 33. During the movement of the limiting shaft 31 in the limiting groove 11, the elastic member is in a compressed state, so that, under the action of the elastic restoring force of the elastic member, the driving block 33 can drive the connecting rod in the connecting rod assembly 2 that cooperates with the power-assisting mechanism 3 to achieve power-assisted door closing and / or power-assisted door opening.

[0075] Specifically, the limiting shaft 31 and the driving block 33 can be integrally formed or separately formed.

[0076] It should be noted that when the limit shaft 31 is located at the end of the limit groove 11, the state of the elastic member is not particularly limited, that is, the elastic member can be set to be in a free state or in a compressed state. For example, the limit groove 11 is defined to have a relative starting position A and a terminal position B. When the connecting rod assembly 2 is in a folded state, the limit shaft 31 is located at the starting position A. When the connecting rod assembly 2 switches from the folded state to the unfolded state, the connecting rod assembly 2 drives the limit shaft 31 to move to the terminal position B. When the limit shaft 31 is located at the starting position A, the driving block 33 acts on the connecting rod matched with the power-assisting mechanism 3. At this time, if the elastic member is set to be in a compressed state, the elastic restoring force of the elastic member can achieve the effect of maintaining the folded state of the connecting rod assembly 2, that is, maintaining the closed state of the door body 30, thereby avoiding the door body 30 from being loosely closed and achieving a certain energy-saving effect; when the limit shaft 31 is located at the terminal position B, the power-assisting mechanism 3 is disengaged from the connecting rod assembly 2, and the limit shaft 31 stays at the terminal position B. At this time, if the elastic member is set to be in a compressed state, the elastic restoring force of the elastic member will act on the limit shaft 31, so that the limit shaft 31 is tightly against the terminal position B, thereby avoiding the limit shaft 31 from shaking in the limit groove 11, improving the limiting effect of the terminal position B on the limit shaft 31, and facilitating the stability of the linkage between the power-assisting mechanism 3 and the connecting rod assembly 2.

[0077] In a specific embodiment, the elastic member is a spring 34, and the power-assisting mechanism 3 further includes a damping rod 35, one end of the damping rod 35 is connected to the rotating seat 32, and the other end is connected to the driving block 33, and the spring 34 is sleeved on the damping rod 35, and one end of the spring 34 abuts against the rotating seat 32, and the other end abuts against the driving block 33. The stability of the elastic deformation of the elastic member can be improved, and the elastic member will not produce skew except in the direction of elastic deformation, thereby improving the stability of the force of the power-assisting mechanism 3. Of course, it is not limited to this.

[0078] Furthermore, the connecting rod assembly 2 is connected to a protruding block 5 that acts on the force-applying end N, that is, the connecting rod in the connecting rod assembly 2 that acts on the force-applying end N is connected to a protruding block 5 for abutting against the force-applying end N, that is, the protruding block 5 and the driving block 33 abut against each other to realize the linkage between the power-assisting mechanism 3 and the connecting rod assembly 2.

[0079] Specifically, it is defined that the connecting rod in the connecting rod assembly 2 that acts on the force-applying end N has a first rotation axis, and a first connecting line L1 is defined between the first rotation axis and the rotation axis of the rotating end M. At the same time, it is defined that a second connecting line L2 is defined between the rotation axis of the rotating end M and the curvature center E of the abutting surface 51 of the protruding block 5 abutting the force-applying end N, and a third connecting line L3 is defined between the curvature center E of the abutting surface 51 of the protruding block 5 abutting the force-applying end N and the first rotation axis.

[0080] It should be noted that the first rotation axis mentioned above can be a physical rotation axis or a virtual rotation axis. For example, when the connecting rod in the connecting rod assembly 2 that acts on the force-applying end N is a rotating rod that is simply rotatably connected to the fixed hinge 1, the first rotation axis is the physical rotation axis of the rotating rod; when the connecting rod in the connecting rod assembly 2 that acts on the force-applying end N is a sliding rod that is rotatably and slidably connected to the fixed hinge 1, the first rotation axis is the virtual rotation axis of the sliding rod.

[0081] It is known that when the center of curvature E of the abutting surface 51 of the protruding block 5 abutting against the force-applying end N is located on the first connecting line L1, the protruding block 5 is at a dead point. When the center of curvature E of the abutting surface 51 of the protruding block 5 abutting against the force-applying end N is located on the side of the first connecting line L1 toward the starting position A, if there is no external force, under the thrust of the power-assisting mechanism 3, the limit shaft 31 has a tendency to move toward the starting position A, which will make the protruding block 5 have a tendency to move toward the direction of the box body 20, and can drive the connecting rod assembly 2 to switch to the folded state, which can realize power-assisted door closing when closing the door, and on the contrary, when opening the door, it will exert a certain effect of preventing the door from opening. force; when the curvature center E of the abutting surface 51 where the protruding block 5 abuts against the force-applying end N is located on the side of the first connecting line L1 away from the starting position A, if there is no external force, under the action of the thrust of the power-assisting mechanism 3, the limit shaft 31 has a tendency to move away from the starting position A, that is, the protruding block 5 has a tendency to move away from the box body 20, which can drive the connecting rod assembly 2 to continue to expand, that is, it can realize power-assisted door opening when opening the door, and correspondingly, when closing the door, a certain force will be applied to prevent the door from closing.

[0082] In a specific embodiment, the abutting surface 51 of the protruding block 5 abutting against the force end N is in an arc shape, that is, the abutting surface 51 of the driving block 33 abutting against the protruding block 5 is in an arc shape. It is possible to improve the smoothness of the cooperation between the protruding block 5 and the driving block 33, thereby further improving the smoothness of opening and closing the door. It is known that at this time, the center of curvature E of the abutting surface 51 of the protruding block 5 abutting against the force end N refers to the center of the circle where the abutting surface 51 is located. During the entire process of the protruding block 5 abutting against the driving block 33, the center of curvature E of the abutting surface 51 of the protruding block 5 abutting against the force end N is the center of the circle, that is, the center of curvature E of the abutting surface 51 of the protruding block 5 abutting against the force end N remains unchanged. Of course, this is not limited to this. In other embodiments, the abutment surface 51 between the driving block 33 and the protruding block 5 may also be a non-circular arc. In this case, during the entire process of the abutment between the protruding block 5 and the driving block 33, the abutment surface 51 between the protruding block 5 and the force-applying end N will change, and the corresponding curvature center E of the abutment surface 51 will also be different.

[0083] It is known that in the embodiment where the contact surface 51 of the protruding block 5 and the force-applying end N is arc-shaped, the second connecting line L2 refers to the connecting line connecting the rotation axis of the rotating end M and the center of the circle where the contact surface 51 is located.

[0084] In a specific embodiment, the axis of the limit shaft 31 is located on the second connecting line L2, that is, the rotation axis of the rotating end M, the axis of the limit shaft 31, and the curvature center E of the contact surface 51 of the protruding block 5 and the force-applying end N are located on the same straight line, that is, the deformation direction of the elastic member and the curvature center E of the contact surface 51 are located on the same straight line, which can improve the effect of the elastic member / boosting mechanism 3 on the protruding block 5 and avoid the dispersion of the force of the elastic member / boosting mechanism 3 on the protruding block 5. Of course, this is not limited to this. In other embodiments, the axis of the limit shaft 31 can also be set not to be located on the second connecting line L2, with a certain amount of misalignment.

[0085] Combination Figure 7As shown, in the first embodiment of the present application, when the limit shaft 31 is located at the terminal position B, the curvature center E of the contact surface 51 of the protruding block 5 and the force-applying end N is located on the first connecting line L1 between the first rotation axis and the rotation axis of the rotation end M or on the side of the first connecting line L1 toward the starting position A. At this time, the above-mentioned disengagement angle is consistent with the power-assisted door closing angle. After the user closes the door until the protruding block 5 contacts the power-assisted mechanism 3, the power-assisted mechanism 3 immediately applies a force to assist the door closing to the protruding block 5, and does not first apply a force to prevent the door from closing, which can improve the smoothness of opening and closing the door body 30 and the stability of the power-assisted door closing.

[0086] It can be known that, in the embodiment where the axis center of the limit shaft 31 is located on the second connecting line L2, the above-mentioned: when the limit shaft 31 is located at the terminal position B, the center of curvature E of the abutting surface 51 of the protruding block 5 abutting against the force-applying end N is located on the first connecting line L1 or on the side of the first connecting line L1 toward the starting position A, can be understood as the terminal position B being located on the first connecting line L1 or on the side of the first connecting line L1 toward the starting position A.

[0087] Specifically, from the starting position A toward the terminal position B, the distance between the limiting groove 11 and the rotating end M gradually decreases. Figure 2 , Figure 7 As shown, at the initial stage of the link assembly 2 unfolding from the folded state, that is, at the initial stage of the door body 30 rotating and opening from the closed state, the protruding block 5 abuts against the force-applying end N, that is, the protruding block 5 abuts against the driving block 33 to drive the limiting shaft 31 to move along the limiting groove 11 to the terminal position B, and the power assist mechanism 3 rotates around the rotating end M. During this process, the distance between the limiting shaft 31 and the rotating end M is continuously reduced, and the elastic member is continuously compressed. When the limiting shaft 31 is at the terminal position B, the elastic member reaches the maximum compression stroke. It can be understood that at this stage, the power assist mechanism 3 will provide a certain force to prevent the door from opening. Figure 8As shown, when the connecting rod assembly 2 continues to rotate and unfold, the connecting rod assembly 2 is disengaged from the power-assisting mechanism 3, and the corresponding door body is mainly driven to open by the connecting rod assembly 2 in the later stage. Correspondingly, when the connecting rod assembly 2 is gradually folded from the unfolded state until the protruding block 5 contacts the force-applying end N, that is, the door body 30 rotates and closes from the open state until the protruding block 5 contacts the force-applying end N, at this time, even if the user releases the door body 30, under the push of the elastic restoring force of the elastic member, the limit shaft 31 has a tendency to move toward the starting position A, driving the protruding block 5 to move toward the direction of the box body 20, driving the connecting rod assembly 2 to switch to the folded state, when the limit shaft 31 is located at the starting position A, the connecting rod assembly 2 is in the folded state, and the door body 30 is in the closed state, realizing power-assisted door closing, that is, in this embodiment, in the door closing stage, when the limit shaft 31 moves in the limit groove 11, the power-assisting mechanism 3 has the function of power-assisted door closing.

[0088] Furthermore, the terminal position B has a limiting portion 12; after the force-applying end N is separated from the connecting rod assembly 2, the limiting shaft 31 is limited to the limiting portion 12. Thus, it is possible to prevent the limiting shaft 31 from moving toward the starting position A under the elastic restoring force of the elastic member after the force-applying end N is separated from the connecting rod assembly 2, resulting in the protruding block 5 being unable to engage with the force-applying end N when closing the door, causing the power-assisting mechanism 3 to fail.

[0089] In a specific embodiment, the limiting groove 11 has a first groove wall 111 away from the rotating end M, and the first groove wall 111 corresponding to the terminal position B is configured to be deflected in a direction away from the rotating end M, and the limiting portion 12 is a deflected section of the first groove wall 111 corresponding to the terminal position B. After the force-applying end N is separated from the connecting rod assembly 2, the limiting shaft 31 abuts against the deflected section to prevent the limiting shaft 31 from moving toward the starting position A under the elastic restoring force of the elastic member, resulting in the protruding block 5 being unable to engage with the force-applying end N when the door is closed, resulting in failure of the power-assisting mechanism 3.

[0090] Specifically, the deflection segment may be a straight segment that forms a certain angle with other segments of the first groove wall 111 , such as a straight segment extending along the front-to-back direction; or may be an arc segment that matches the limiting axis 31 .

[0091] Furthermore, the limiting groove 11 is an arc-shaped groove, which can improve the smoothness of the movement of the limiting shaft 31 along the limiting groove 11, thereby further improving the smoothness of opening and closing the door body 30.

[0092] Combination Figures 9 to 12The figure shows the hinge device 10a in the second embodiment of the present application. The difference between the second embodiment of the present application and the first embodiment is that when the limit shaft 31 is located at the terminal position B, the center of curvature E of the contact surface 51 of the protruding block 5 and the force-applying end N is located on the side of the first connecting line L1 away from the initial position. At this time, corresponding to the above-mentioned situation where the disengagement angle is greater than the power-assisted door closing angle, that is, in the process of closing the door before the power-assisted door closing stage, the power-assisted mechanism 3 will apply a force to prevent the door from closing, and in the process of opening the door, the power-assisted mechanism 3 will apply a certain force to assist the door opening, so as to achieve power-assisted door opening.

[0093] Specifically, combined Fig.10 As shown, the limiting groove 11a also has a transition position C between the starting position A and the terminal position B. When the limiting shaft 31 is located at the transition position C, the curvature center E of the contact surface 51 of the protruding block 5 and the force-applying end N is located on the first connecting line L1. Definition: The limiting groove 11 includes a first groove section located between the starting position A and the transition position C, and a second groove section located between the transition position C and the terminal position B. From the starting position A toward the transition position C, the distance between the first groove section and the rotating end M gradually decreases, and from the transition position C toward the terminal position B, the distance between the second groove section and the rotating end M gradually increases.

[0094] Combination Figure 9-10 As shown, when the connecting rod assembly 2 is unfolded from the folded state, that is, when the door body 30 is rotated to open from the closed state, the protruding block 5 abuts against the force-applying end N, that is, the protruding block 5 abuts against the driving block 33 to drive the limiting shaft 31 to move along the first groove section from the starting position A to the transition position C, and the power-assisting mechanism 3 rotates around the rotating end M. During this process, the distance between the limiting shaft 31 and the rotating end M is continuously reduced, and the elastic member is continuously compressed. When the limiting shaft 31 is located at the transition position C, the elastic member reaches the maximum compression stroke. It can be understood that at this stage, the power-assisting mechanism 3 will provide a certain force to prevent the door from opening. Figure 10-11 As shown, after the door body 30 continues to rotate and open until the protruding block 5 drives the limit shaft 31 to switch from the transition position C to the second slot section, the boost mechanism 3 rotates and pushes the protruding block 5 to move away from the box body 20 under the drive of the elastic restoring force of the elastic member, thus achieving the function of boosting the door opening. Fig.11As shown, when the limit shaft 31 is located at the terminal position B and continues to rotate to open the door body, the power-assisting mechanism 3 is disengaged from the connecting rod assembly 2. It can be known that in this embodiment, after the power-assisting mechanism 3 is disengaged from the connecting rod assembly 2, the force applied by the power-assisting mechanism 3 to the limit groove 11 has a component force in the direction away from the starting position A. Therefore, in the absence of external force, the limit shaft 31 will not move toward the starting position A, and the limit shaft 31 can be limited at the terminal position B without the need to additionally set the limit portion 12.

[0095] Correspondingly, when the connecting rod assembly 2 gradually folds from the expanded state until the protruding block 5 contacts the force-applying end N, that is, when the door body 30 rotates closed until the protruding block 5 contacts the force-applying end N and continues to rotate closed, the limit shaft 31 moves along the second groove section toward the transition position C, and the distance between the limit shaft 31 and the rotating end M continues to decrease, and the elastic member is continuously compressed. When the limit shaft 31 is located at the transition position C, the elastic member reaches the maximum compression stroke. At this stage, the power assist mechanism 3 will apply a certain force to the connecting rod assembly 2 to prevent the door from closing. After the door body 30 continues to close until the limit shaft 31 enters the first groove section from the transition position C, the limit shaft 31 tends to move toward the starting position A under the push of the elastic restoring force of the elastic member, driving the protruding block 5 to move toward the direction of the box body 20, and driving the connecting rod assembly 2 to switch to the folded state. When the limit shaft 31 is located at the starting position A, the connecting rod assembly 2 is in the folded state, and the door body 30 is in the closed state, thereby realizing power-assisted door closing.

[0096] Specifically, the trajectory and length of the second groove segment can be controlled to control the closing force and length required by the user to be applied by the power assist mechanism 3 during the door closing stage, that is, the door opening angle of the power assist mechanism 3 during the door opening stage can be controlled to improve the smoothness of opening and closing the door body 30.

[0097] The second embodiment of the present application is the same as the first embodiment except for the above differences, and will not be described in detail here.

[0098] Furthermore, the driving block 33 further includes a stopper block 332 protruding toward the protruding block 5, and the stopper block 332 is located on the side of the protruding block 5 facing the box body 20. Therefore, in the door opening stage, the stopper block 332 will not limit the separation between the protruding block 5 and the driving block 33; in the door closing stage, the stopper block 332 can prevent the protruding block 5 from being separated from the driving block 33, thereby improving the stability of the cooperation between the power-assisting mechanism 3 and the protruding block 5.

[0099] Furthermore, the length of the second connecting line L2 is greater than the length of the third connecting line L3, so that the elastic member can obtain sufficient elastic compression, thereby improving the assisting effect and assisting stability of the assisting mechanism 3.

[0100] Furthermore, combined with Figure 6 As shown, when the connecting rod assembly 2 is in the folded state, that is, when the door body 30 is in the closed state, the angle α1 between the first connecting line L1 and the second connecting line L2 is not greater than 60°. It can be known that the size of the angle α1 can control the force arm of the power-assisted door closing force applied by the power-assisted mechanism 3 to the connecting rod assembly 2. The larger the angle α1, the larger the force arm of the power-assisted door closing force applied by the power-assisted mechanism 3 to the connecting rod assembly 2, and a larger power-assisted door closing torque can be obtained to achieve large-load power-assisted door closing.

[0101] Furthermore, when the connecting rod assembly 2 is in the folded state, that is, when the door body 30 is in the closed state, the angle α2 between the third connecting line L3 and the first connecting line L1 is not less than 5°. It can be seen that the size of the angle α2 can control the power-assisted door closing angle of the power-assisted mechanism 3. The larger the angle α2, the larger the corresponding power-assisted door closing angle.

[0102] Further, the limiting shaft 31 has a first shaft section 311 located in the limiting groove 11, and the shaft diameter of the first shaft section 311 is smaller than the groove width of the limiting groove 11. When the power-assisting mechanism 3 and the connecting rod assembly 2 are linked to each other, there is a gap between the first shaft section 311 and the groove wall of the limiting groove 11, that is, the difference between the distance between the first rotation axis and the axis of the first shaft section 311 and the distance between the first rotation axis and the limiting groove 11 is greater than the shaft radius of the first shaft section 311, and the difference between the distance between the rotation axis of the rotating end M and the axis of the first shaft section 311 and the distance between the rotation axis of the rotating end M and the limiting groove 11 is greater than the shaft radius of the first shaft section 311. Therefore, in the stage of the power-assisting mechanism 3 and the connecting rod assembly 2 being linked to each other, there is no contact between the limiting shaft 31 and the groove wall of the limiting groove 11, and the force of the power-assisting mechanism 3 is fully applied to the connecting rod assembly 2, thereby improving the power-assisting effect of the power-assisting mechanism 3. It can be known that only when the limit shaft 31 is located at the terminal position B and the connecting rod assembly 2 is disengaged from the power-assisting mechanism 3, the first shaft segment 311 will be supported against the groove wall of the limit groove 11 at the terminal position B under the action of the elastic restoring force of the elastic member, that is, it will contact the groove wall of the limit groove 11.

[0103] It should be noted that the distance between the first rotation axis and the limit groove 11 in this article refers to the distance between the first rotation axis and the groove wall on the side of the limit groove 11 close to the first rotation axis; similarly, the distance between the rotation axis of the rotating end M and the limit groove 11 in this article refers to the distance between the rotation axis of the rotating end M and the groove wall on the side of the limit groove 11 close to the rotating end M.

[0104] Further, during the mutual linkage between the power-assisting mechanism 3 and the connecting rod assembly 2, and during the movement of the limit shaft 31 from the preset position to the terminal position B, the gap between the first shaft segment 311 and the first groove wall 111 gradually decreases, wherein the preset position is the starting position A or the preset position is between the starting position A and the terminal position B. That is, during the mutual linkage between the power-assisting mechanism 3 and the connecting rod assembly 2, the difference between the distance from the first rotation axis to the axis of the first shaft segment 311 and the distance from the first rotation axis to the second groove segment gradually decreases from the preset position toward the terminal position, thereby reducing the size of the gap between the first shaft segment 311 and the first groove wall 111 when the power-assisting mechanism 3 is separated from the connecting rod assembly 2, and preventing the first shaft segment 311 from hitting the first groove wall 111 under the elastic restoring force of the elastic member after the power-assisting mechanism 3 is separated from the connecting rod assembly 2, resulting in noise or damage to the first shaft segment 311.

[0105] It is known that when the preset position is the starting position A, that is, when the power-assisting mechanism 3 and the connecting rod assembly 2 are linked to each other, and the limit shaft 31 moves from the starting position A to the terminal position B, the gap between the first shaft segment 311 and the first groove wall 111 gradually decreases. When the preset position is not the starting position A, but is located at a position between the starting position A and the terminal position B, it is known that when the power-assisting mechanism 3 and the connecting rod assembly 2 are linked to each other, and the limit shaft 31 moves from the starting position A to the preset position, the gap between the first shaft segment 311 and the first groove wall 111 can be set to be constant or change without a specific rule; when the limit shaft 31 moves from the preset position toward the terminal position B, the gap between the first shaft segment 311 and the first groove wall 111 gradually decreases.

[0106] In a specific embodiment, during the process in which the power-assisting mechanism 3 and the connecting rod assembly 2 are linked to each other and the limiting shaft 31 moves from the preset position to the terminal position B, the gap between the first shaft segment 311 and the first groove wall 111 is gradually reduced to 0, that is, during the process in which the connecting rod assembly 2 drives the limiting shaft 31 to move toward the terminal position B, there is a gap greater than 0 between the first shaft segment 311 and the groove wall of the limiting groove 11, and they will not contact each other, until the connecting rod assembly 2 drives the limiting shaft 31 to move to the first shaft segment 311 at the terminal position B, the first shaft segment 311 will be close to the first groove wall 111, at this time, under the action of the elastic restoring force of the elastic member, the first shaft segment 311 is held against the groove wall at the terminal position B, that is, it contacts the groove wall of the limiting groove 11, so that the protruding block 5 can be naturally separated from the force-applying end N of the power-assisting mechanism 3 without generating noise. Of course, this is not limited to this.

[0107] Furthermore, the fixed hinge 1 is provided with a first avoidance hole 13 in communication with the limit groove 11 at the starting position A. Thus, after the limit shaft 31 moves from the terminal position B to the starting position A, the limit shaft 31 will not hit the fixed hinge 1, thereby avoiding noise or damage to the limit shaft 31.

[0108] In a specific embodiment, the limiting shaft 31 further includes a second shaft section 312 coaxial with the first shaft section 311 and located outside the limiting groove 11, the shaft diameter of the second shaft section 312 is larger than the shaft diameter of the first shaft section 311, and the groove width of the limiting groove 11 is smaller than the shaft diameter of the second shaft section 312; the first avoidance hole 13 is a mounting hole, and the hole diameter of the mounting hole is not smaller than the shaft diameter of the second shaft section 312. Therefore, the limiting shaft 31 can be installed from the mounting hole, that is, the second groove section 312 is passed through the mounting hole, and after the installation is completed, the limiting shaft 31 is moved to the starting position, and under the cooperation of the second shaft section 312 and the limiting groove 11, the limiting shaft 31 can be limited to move along its axial direction, thereby improving the stability of the cooperation between the limiting shaft 31 and the limiting groove 11.

[0109] Specifically, the fixed hinge component 1 includes a fixed plate 14 for fixing to the box body 20, and two connecting plates 15 connected to the opposite ends of the fixed plate 14, and the connecting plates 15 are perpendicular to the fixed plate 14, that is, the fixed hinge component 1 is a double-layer structure with a U-shaped cross-section, which can improve the strength of the hinge device 10.

[0110] The power-assisting mechanism 3 is disposed between the two connecting plates 15 , and the power-assisting mechanism 3 can be disposed in a hidden manner, thereby improving the overall appearance of the hinge device 10 .

[0111] Specifically, the two connecting plates 15 are provided with the limiting grooves 11, the driving block 33 is provided with a through hole 331 for accommodating the second shaft segment 312, and the limiting shaft 31 includes the second shaft segment 312 and two first shaft segments 311 provided at opposite ends of the second shaft segment 312. That is, the limiting shaft 31 and the driving block 33 are detachably connected. When installing the power-assisting mechanism 3, first place the power-assisting mechanism 3 between the two connecting plates 15, and rotate the rotating end M to connect to the two connecting plates 15; then, align the through hole 331 on the driving block 33 with the first avoiding hole 13, and insert the limiting shaft 31 from the outside of the fixed hinge 1 into the first avoiding hole 13 and the through hole 331, so that the second shaft section 312 is located in the through hole 331, and the two first shaft sections 311 are respectively located in the corresponding first avoiding holes 13; finally, rotate the power-assisting mechanism 3 so that the two first shaft sections 311 respectively enter the corresponding limiting grooves 11, which is easy to install; and, at this time, because the shaft diameter of the second shaft section 312 is larger than the groove width of the limiting groove 11, the opposite ends of the second shaft end 312 are respectively abutted on the two connecting plates 15, which can limit the axial movement of the limiting shaft 31 relative to the limiting groove 11 along its axial direction, thereby improving the stability of the cooperation between the limiting shaft 31 and the limiting groove 11.

[0112] In a specific embodiment, the connecting rod assembly 2 includes a first connecting rod 21 rotatably connected to the fixed hinge 1, and the force-applying end N is configured to act on the first connecting rod 21, that is, the protruding block 5 is connected to the first connecting rod 21. In this way, since the position of one end of the first connecting rod 21 relative to the fixed hinge 1 does not change and is located in the fixed hinge 1, it can better cooperate with the power-assisting mechanism 3 for linkage. By applying a force to the first connecting rod 21 through the force-applying end N of the power-assisting mechanism 3, the entire connecting rod assembly 2 can be driven to move through the first connecting rod 21, thereby providing the entire connecting rod assembly 2 with an auxiliary force when folding, so as to facilitate the closing of the door body 30 and prevent the door body 30 from opening by itself.

[0113] It can be known that when the force-applying end N is set to act on the first connecting rod 21 rotatably connected to the fixed hinge 1, the first rotation axis of the connecting rod in the above-mentioned connecting rod assembly 2 that acts on the force-applying end N refers to the first hinge point D of the first connecting rod 21 on the fixed hinge 1.

[0114] Furthermore, the protruding block 5 is detachably connected to the first connecting rod 21 , which can simplify the preparation of the first connecting rod 21 and improve the versatility of the hinge device 10 .

[0115] Specifically, the hinge device 10 includes a rotating shaft 6 that rotatably connects the first connecting rod 21 to the fixed hinge component 1, and the protruding block 5 is sleeved on the rotating shaft 6; a limiting structure 7 is also provided between the protruding block 5 and the first connecting rod 21 to limit the rotation of the protruding block 5 relative to the first connecting rod 21, which is easy to assemble.

[0116] In a specific implementation, the limiting structure 7 can be configured as a concave-convex structure that cooperates with each other, or can also be configured as a riveted structure that is riveted to each other.

[0117] Furthermore, the fixed hinge 1 is also provided with a slide groove 16, and the connecting rod assembly 2 also includes a second connecting rod 22 rotatably and slidably connected in the slide groove 16, and a third connecting rod 23 connecting the door body 30 and the first connecting rod 21, the first connecting rod 21 intersects with the second connecting rod 22 and is rotatably connected at the intersection, the other end of the second connecting rod 22 is used for rotatably connecting to the door body 30, one end of the third connecting rod 23 is used for rotatably connecting to the door body 30, and the other end is rotatably connected to the end of the first connecting rod 21 away from the fixed hinge 1. In the process of the door body 30 rotating relative to the box body 20, the connecting rod assembly 2 moves along the slide groove 16, so that the door body 30 moves according to a preset trajectory, thereby avoiding interference with external environmental parts.

[0118] Furthermore, the hinge device 10 further includes a movable hinge 4 for fixing to the door body 30, and one end of the connecting rod assembly 2 for connecting to the door body 30 is connected to the movable hinge 4. That is, the third connecting rod 23 and the second connecting rod 22 are both rotatably connected to the movable hinge 4. The modular arrangement of the hinge device 10 is conducive to the assembly between the hinge device 10 and the door body 30, and is also conducive to further improving the strength of the hinge device 10.

[0119] The side where the end of the door body 30 in the refrigeration device 100 rotates relative to the box body 20 is defined as the pivot end side. When the door body 30 is in a closed state, the direction from the center of the door body 30 away from the box body 20 is the first direction F1, and the direction from the center of the door body 30 toward the pivot end side is the second direction F2. It can be seen that the above-mentioned definitions of the pivot end side, the first direction F1, and the second direction F2 are also applicable to the hinge device 10. Specifically, the side where the end of the movable hinge 4 in the hinge device 10 rotates relative to the fixed hinge 1 is the pivot end side. When the movable hinge 4 is in a closed state, that is, when the connecting rod assembly 2 is in a folded state, the direction from the center of the movable hinge 4 away from the fixed hinge 1 is the first direction F1, and the direction from the center of the movable hinge 4 toward the pivot end side is the second direction F2.

[0120] Specifically, the first direction F1 is the forward direction away from the box body 20 / fixed hinge 1. When the pivot end side is the left end side, the second direction F2 is the direction from right to left, and when the pivot end side is the right end side, the second direction F2 is the direction from left to right. In short, the second direction F2 is the outward direction toward the pivot end side.

[0121] In a specific embodiment, the second connecting rod 22 has a guide shaft 221 that is rotatably and slidably connected to the slide groove 16. The slide groove 16 is located on a side of the hinge point between the first connecting rod 21 and the fixed hinge 1 away from the pivot end, and the slide groove 16 has a first end and a second end opposite to each other. When the connecting rod assembly 2 is in a folded state, the guide shaft 221 is located at the first end. When the connecting rod assembly 2 is gradually unfolded from the folded state, the guide shaft 221 moves along the slide groove 16 toward the second end to drive the door body 30 to translate according to a preset trajectory.

[0122] Specifically, from the first end toward the second end, the extending direction of the slide slot 16 has directional components of the first direction F1 and the second direction F2. Therefore, when the connecting rod assembly 2 is gradually unfolded from the folded state, the movable hinge 4 moves along the first direction F1 and the second direction F2 at the same time, that is, when the door body 30 is rotated to open, the translation direction of the door body 30 has directional components of the first direction F1 and the second direction F2 at the same time. On the one hand, during the opening process of the door body 30, the door body 30 moves forward along the first direction F1 toward the direction away from the box body 20, so that the pivot end of the door body 30 located on the pivot end side gradually moves to the front side of the wall / cabinet located on the pivot end side, thereby avoiding interference with the wall / cabinet located on the pivot end side during the opening process of the door body 30, so that the door body 30 can be adapted to a variety of application scenarios, such as the application scenario of a built-in refrigerator, and at the same time, the maximum opening angle of the door body 30 can be increased; on the other hand, during the opening process of the door body 30, the door body 30 simultaneously moves outward along the second direction F2 away from the box body 20, which can increase the opening degree of the door body 30, avoid the door body 30 blocking the extraction of shelves / drawers in the box body 20, and affect the extraction of shelves / drawers in the box body 20, so as to facilitate users to check and take items in the box body 20.

[0123] Furthermore, the fixed hinge component 1 also includes a second avoidance hole 17 connected to the slide groove 16 at the first end, so that when the guide shaft 221 moves to the first end, the guide shaft 221 will not collide with the fixed hinge component 1, thereby avoiding noise and preventing damage to the guide shaft 221.

[0124] Specifically, the second avoidance hole 17 can also be set as a mounting hole of the guide shaft 221. In this case, the structure of the guide shaft 221 can be set with reference to the limit shaft 31. Of course, it is not limited to this.

[0125] To summarize, the hinge device 10 in the present application, on the one hand, by arranging the power-assisting mechanism 3 on the fixed hinge part 1, can improve the stability and reliability of the interaction force between the power-assisting mechanism 3 and the connecting rod assembly 2, improve the stability of opening and closing the door, and reduce the impact on the overall volume of the refrigerator; on the other hand, by arranging the limiting groove 11 on the fixed hinge part 1 that cooperates with the power-assisting mechanism 3 so that when the force-applying end N acts on the connecting rod assembly 2, the power-assisting mechanism 3 rotates synchronously around the rotating end M, and by setting the trajectory and length of the limiting groove 11, the corresponding power-assisting door closing angle / power-assisting door opening angle and the disengagement angle between the power-assisting mechanism 3 and the connecting rod assembly 2 can be controlled, thereby improving the smoothness of opening and closing the door body 30.

[0126] The above embodiments are only used to illustrate the technical solutions of the present application and are not intended to limit the present application. Although the present application is described in detail with reference to the preferred embodiments, for example, if the technologies in different embodiments can be used in a superimposed manner to achieve corresponding effects at the same time, the solutions are also within the protection scope of the present application. It should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. A hinge device (10), characterized in that: include: A fixed hinge member (1) for fixing to a box body (20); A connecting rod assembly (2), one end of the connecting rod assembly (2) is movably connected to the fixed hinge member (1), and the other end is used to be connected to the door body (30); A power-assisting mechanism (3), the power-assisting mechanism (3) comprising a rotating end (M) rotatably connected to the fixed hinge component (1), and a force-applying end (N) opposite to the rotating end (M) and used to act on a connecting rod in the connecting rod assembly (2), the force-applying end (N) having a limiting axis (31), and the fixed hinge component (1) having a limiting groove (11), and when the power-assisting mechanism (3) rotates around the rotating end (M), the limiting axis (31) moves in the limiting groove (11).

2. The hinge device (10) according to claim 1, characterized in that: The limiting groove (11) has a relative starting position (A) and a terminal position (B); when the connecting rod assembly (2) is in a folded state, the limiting shaft (31) is located at the starting position (A); when the connecting rod assembly (2) switches from the folded state to the unfolded state, the connecting rod assembly (2) drives the limiting shaft (31) to move toward the terminal position (B); and in the direction from the starting position (A) toward the terminal position (B), the distance between the limiting groove (11) and the rotating end (M) gradually decreases; In which, the connecting rod in the connecting rod assembly (2) that acts on the force-applying end (N) has a first rotation axis, and the connecting rod assembly (2) is connected to a protruding block (5) that acts on the force-applying end (N). When the limit shaft (31) is located at the terminal position (B), the curvature center (E) of the abutment surface (51) of the protruding block (5) abutting against the force-applying end (N) is located on the first connecting line (L1) between the first rotation axis and the rotation axis of the rotating end (M) or on the side of the first connecting line (L1) toward the starting position (A).

3. The hinge device (10) according to claim 2, characterized in that: The terminal position (B) has a limiting portion (12) for limiting the limiting axis (31).

4. The hinge device (10) according to claim 1, characterized in that: The limiting groove (11) has a starting position (A), a terminal position (B), and a transition position (C) between the starting position (A) and the terminal position (B); when the connecting rod assembly (2) is in a folded state, the limiting shaft (31) is located at the starting position (A); when the connecting rod assembly (2) switches from the folded state to the unfolded state, the limiting shaft (31) moves toward the terminal position (B); from the starting position (A) toward the transition position (C), the distance between the limiting groove (11) and the rotating end (M) gradually decreases; from the transition position (C) toward the terminal position (B), the distance between the limiting groove (11) and the rotating end (M) gradually increases; In which, the connecting rod in the connecting rod assembly (2) that acts on the force-applying end (N) has a first rotation axis, and the connecting rod assembly (2) is connected to a protruding block (5) that acts on the force-applying end (N). When the limit shaft (31) is located at the transition position (C), the curvature center (E) of the abutment surface (51) of the protruding block (5) abutting against the force-applying end (N) is located on the first connecting line (L1) between the first rotation axis and the rotation axis of the rotating end (M).

5. The hinge device (10) according to claim 1, characterized in that: The connecting rod assembly (2) is connected to a protruding block (5) that acts on the force-applying end (N); a second connecting line (L2) is provided between the rotation axis of the rotating end (M) and the curvature center (E) of the abutting surface (51) of the protruding block (5) and the force-applying end (N); the connecting rod in the connecting rod assembly (2) that acts on the force-applying end (N) has a first rotation axis, and a first connecting line (L1) is provided between the first rotation axis and the rotation axis of the rotating end (M); When the connecting rod assembly (2) is in a folded state, the included angle α1 between the first connecting line (L1) and the second connecting line (L2) is no greater than 60°.

6. The hinge device (10) according to claim 1, characterized in that: The connecting rod in the connecting rod assembly (2) that acts on the force-applying end (N) has a first rotation axis, and a first connecting line (L1) is formed between the first rotation axis and the rotation axis of the rotating end (M); the connecting rod assembly (2) is connected to a protruding block (5) that acts on the force-applying end (N), and a third connecting line (L3) is formed between the center of curvature (E) of the contact surface (51) of the protruding block (5) that abuts against the force-applying end (N) and the first rotation axis; When the connecting rod assembly (2) is in a folded state, the included angle α2 between the third connecting line (L3) and the first connecting line (L1) is not less than 5°.

7. The hinge device (10) according to claim 1, characterized in that: The connecting rod assembly (2) is connected to a protruding block (5) that acts on the force-applying end (N); a second connecting line (L2) is provided between the rotation axis of the rotating end (M) and the curvature center (E) of the abutting surface (51) of the protruding block (5) and the force-applying end (N); and the axis of the limiting axis (31) is located on the second connecting line (L2).

8. The hinge device (10) according to claim 1, characterized in that: The limiting shaft (31) comprises a first shaft section (311) located in the limiting groove (11), and the shaft diameter of the first shaft section (311) is smaller than the groove width of the limiting groove (11); When the power-assisting mechanism (3) and the connecting rod assembly (2) are linked to each other, a gap exists between the first shaft section (311) and the groove wall of the limiting groove (11).

9. The hinge device (10) according to claim 1, characterized in that: The limiting groove (11) has a relative starting position (A) and a terminal position (B); when the connecting rod assembly (2) is in a folded state, the limiting shaft (31) is located at the starting position (A); when the connecting rod assembly (2) switches from the folded state to the unfolded state, the connecting rod assembly (2) drives the limiting shaft (31) to move toward the terminal position (B); the limiting groove (11) has a first groove wall (111) away from the rotating end (M); The limiting shaft (31) has a first shaft section (311) located in the limiting groove (11), and the shaft diameter of the first shaft section (311) is smaller than the groove width of the limiting groove (11). When the power-assisting mechanism (3) and the connecting rod assembly (2) are linked to each other and the limiting shaft (31) moves from a preset position to a terminal position (B), the gap between the first shaft section (311) and the first groove wall (111) gradually decreases, wherein the preset position is the starting position (A) or the preset position is between the starting position (A) and the terminal position (B).

10. The hinge device (10) according to claim 1, characterized in that: The limiting groove (11) has a relative starting position (A) and a terminal position (B); when the connecting rod assembly (2) is in a folded state, the limiting shaft (31) is located at the starting position (A); when the connecting rod assembly (2) switches from the folded state to the unfolded state, the connecting rod assembly (2) drives the limiting shaft (31) to move toward the terminal position (B); The fixed hinge component (1) is also provided with a first avoidance hole (13) which is connected to the limiting groove (11) at the starting position (A).

11. The hinge device (10) according to claim 10, characterized in that: The limiting shaft (31) comprises a first shaft section (311) located in the limiting groove (11), and a second shaft section (312) coaxial with the first shaft section (311) and located outside the limiting groove (11), the shaft diameter of the second shaft section (312) is larger than the shaft diameter of the first shaft section (311), and the groove width of the limiting groove (11) is smaller than the shaft diameter of the second shaft section (312); the first avoiding hole (13) is a mounting hole, and the hole diameter of the mounting hole is not smaller than the shaft diameter of the second shaft section (312).

12. The hinge device (10) according to claim 1, characterized in that: The limiting groove (11) is an arc-shaped groove.

13. The hinge device (10) according to any one of claims 1 to 12, characterized in that: The connecting rod assembly (2) is connected to a protruding block (5) that matches the force-applying end (N), and the force-applying end (N) acts on the protruding block (5); the abutting surface (51) between the force-applying end (N) and the protruding block (5) is in an arc shape.

14. The hinge device (10) according to any one of claims 1 to 12, characterized in that: The power assist mechanism (3) comprises: A rotating seat (32) located at the rotating end (M), wherein the rotating seat (32) is rotatably connected to the fixed hinge member (1); a driving block (33) located at the force-applying end (N), the driving block (33) being used to act on a connecting rod in the connecting rod assembly (2), and the limiting shaft (31) being arranged on the driving block (33); a damping rod (35), one end of the damping rod (35) being connected to the rotating seat (32) and the other end of the damping rod (35) being connected to the driving block (33); A spring (34), wherein the spring (34) is sleeved on the damping rod (35), and the spring (34) is in a compressed state.

15. The hinge device (10) according to claim 14, characterized in that: The fixed hinge member (1) comprises a fixed plate (14) for fixing to a box body (20), two connecting plates (15) connected to opposite ends of the fixed plate (14), the connecting plates (15) being perpendicular to the fixed plate (14), the assist mechanism (3) being arranged between the two connecting plates (15), and the limiting groove (11) being arranged on the connecting plates (15); The limiting shaft (31) comprises a first shaft section (311) located in the limiting groove (11), and a second shaft section (312) coaxial with the first shaft section (311) and located outside the limiting groove (11); the shaft diameter of the second shaft section (312) is greater than the shaft diameter of the first shaft section (311); the groove width of the limiting groove (11) is smaller than the shaft diameter of the second shaft section (312); and the driving block (33) is provided with a through hole (331) for accommodating the second shaft section (312).

16. The hinge device (10) according to any one of claims 1 to 12, characterized in that: The connecting rod assembly (2) comprises a first connecting rod (21) rotatably connected to the fixed hinge component (1), and the force-applying end (N) acts on the first connecting rod (21).

17. The hinge device (10) according to claim 16, characterized in that: The first connecting rod (21) is connected to a protruding block (5) that acts on the force-applying end (N), and the protruding block (5) is detachably connected to the first connecting rod (21).

18. The hinge device (10) according to claim 17, characterized in that: The hinge device (10) comprises a rotating shaft (6) for rotatably connecting the first connecting rod (21) to the fixed hinge member (1), and the protruding block (5) is sleeved on the rotating shaft (6); a limiting structure (7) is also provided between the protruding block (5) and the first connecting rod (21) for limiting the rotation of the protruding block (5) relative to the first connecting rod (21).

19. The hinge device (10) according to claim 16, characterized in that: The connecting rod assembly (2) further comprises: a second connecting rod (22), one end of the second connecting rod (22) being rotatably and slidingly connected to the fixed hinge (1), and the other end of the second connecting rod (22) being rotatably connected to the door body (30), the second connecting rod (22) intersecting with the first connecting rod (21) and being rotatably connected at the intersection; A third connecting rod (23), one end of which is rotatably connected to the door body (30) and the other end of which is rotatably connected to the first connecting rod (21).

20. The hinge device (10) according to claim 19, characterized in that: The fixed hinge member (1) is provided with a slide groove (16) matched with the second connecting rod (22); the second connecting rod (22) has a guide shaft (221) located in the slide groove (16); the slide groove (16) has a first end and a second end opposite to each other; when the connecting rod assembly (2) is in a folded state, the guide shaft (221) is located at the first end; The fixed hinge component (1) further comprises a second avoidance hole (17) at the first end which is in communication with the slide groove (16).

21. The hinge device (10) according to claim 1, characterized in that: The hinge device (10) further comprises a movable hinge member (4) for fixing to the door body (30), and one end of the connecting rod assembly (2) for connecting to the door body (30) is connected to the movable hinge member (4).

22. A refrigeration device (100), comprising a box (20) and a door (30) for opening or closing the box (20), characterized in that: The refrigeration device (100) further comprises a hinge device (10) according to any one of claims 1 to 21.

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