Hinge and swing door

Abstract

The application discloses a hinge and an opening and closing door. The hinge comprises a rotating piece, a first rotating shaft, a second rotating shaft and a limiting rod. The rotating piece has a first connecting part and a second connecting part. The rotating piece is provided with a containing groove. The first connecting part is rotationally connected with the first rotating shaft. The second connecting part is rotationally connected with the second rotating shaft. The first rotating shaft is provided with a first limiting groove. The second rotating shaft is provided with a second limiting groove. The containing groove is communicated with the first limiting groove and the second limiting groove. The first limiting groove and the second limiting groove are oppositely arranged. The limiting rod is arranged in the containing groove. One end of the limiting rod extends into the first limiting groove. The other end of the limiting rod extends into the second limiting groove. The limiting rod can slide out of the first limiting groove and the second limiting groove. In the length direction of the limiting rod, the cross-sectional area of the limiting rod gradually decreases. The change of the cross section of the limiting rod can reduce the interference between the limiting rod and the groove wall of the first limiting groove or the groove wall of the second limiting groove when the limiting rod rotates with the rotating piece, and the limiting rod is guided.

Description

Technical Field

[0001] This invention relates to the field of hinge technology, and in particular to a hinge and a door for opening and closing. Background Technology

[0002] A hinge with dual axes enables 360-degree rotation of the movable door. The dual axes correspond to the relative rotation between the fixed door and the rotating component, and the relative rotation between the movable door and the rotating component. In related technologies, a limit rod is installed within the rotating component of the hinge to restrict the relative rotation between the fixed door and the hinge, and between the movable door and the hinge, thereby ensuring accurate return of the door to its original position. However, even with the limit rod, there is a chance that the rotation of the pivot will become stuck or jammed during the opening and closing process, affecting the use of the door. Therefore, it is necessary to research and solve this problem. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, the present invention proposes a hinge that can reduce the probability of the pivot sticking or jamming during rotation.

[0004] The present invention also proposes an opening and closing door having the above-mentioned hinge.

[0005] A hinge according to an embodiment of the present invention includes:

[0006] First subject;

[0007] Second subject;

[0008] A rotating assembly includes a rotating component, a first rotating shaft, a second rotating shaft, and a limiting rod. The rotating component has a first connecting portion and a second connecting portion, and the rotating component is provided with a receiving groove. The first connecting portion is rotatably connected to the first rotating shaft, and the second connecting portion is rotatably connected to the second rotating shaft. The first main body is fixedly connected to the first rotating shaft, and the second main body is fixedly connected to the second rotating shaft. The first rotating shaft is provided with a first limiting groove, and the second rotating shaft is provided with a second limiting groove. The two ends of the receiving groove are respectively connected to the first limiting groove and the second limiting groove. The first limiting groove and the second limiting groove are arranged opposite to each other. The minimum distance between the bottom of the first limiting groove and the outer surface of the second rotating shaft is L2, and the minimum distance between the bottom of the second limiting groove and the outer surface of the first rotating shaft is L3.

[0009] The limiting rod is disposed in the receiving groove. The length of the limiting rod is L1. Along the length direction of the limiting rod, one end of the limiting rod extends into the first limiting groove, and the other end of the limiting rod extends into the second limiting groove. Wherein, L1≤L2 and L1≤L3. Along the length direction of the limiting rod, the cross-sectional area of ​​the limiting rod gradually decreases.

[0010] The hinge according to the embodiments of the present invention has at least the following beneficial effects: the cooperation of the first pivot, the second pivot, and the rotating member in the hinge can achieve 180-degree rotation. Therefore, when the hinge is applied to the opening and closing of a door, the limiting rod can restrict the rotation of the other of the first pivot and the rotating member when one of the first pivot and the second pivot rotates, thereby making the return to the closed state of the opening and closing door accurate. Based on this, the cross-sectional area of ​​the limiting rod gradually decreases along its length. This reduces interference with the walls of the first or second limiting groove when the limiting rod rotates with the rotating component. The outer surface of the limiting rod also provides a guiding effect, guiding the rod out of the first limiting groove when it abuts against the wall of the first limiting groove, and guiding it out of the second limiting groove when it abuts against the wall of the second limiting groove. This reduces the likelihood of jamming or stuck during rotation of the first and second rotating shafts, thus reducing the chance of jamming or stuck when the hinge is used in opening and closing doors.

[0011] According to some embodiments of the present invention, the rotating assembly further includes a limiting block disposed in the receiving groove, the limiting block having a limiting hole, the limiting rod being inserted into the limiting hole, and the wall of the limiting hole abutting against the limiting rod.

[0012] According to some embodiments of the present invention, a positioning groove is formed on the inner wall of the receiving groove, and the limiting block is inserted into the positioning groove.

[0013] According to some embodiments of the present invention, the rotating assembly further includes a first elastic element, a second elastic element, a first limiting post, and a second limiting post. The first elastic element and the second elastic element are respectively sleeved on the outer surface of the limiting rod and located at both ends of the limiting block. The first end of the first elastic element and the first end of the second elastic element respectively abut against both ends of the limiting block. The first limiting post and the second limiting post are respectively fixedly connected to both ends of the limiting rod and protrude radially from the outer surface of the limiting rod. The first limiting post abuts against the second end of the first elastic element, and the second limiting post abuts against the second end of the second elastic element.

[0014] According to some embodiments of the present invention, the two ends of the limiting rod are respectively provided with through holes, and the first limiting post and the second limiting post are respectively inserted into the through holes with an interference fit.

[0015] According to some embodiments of the present invention, the first limiting groove has a first bottom wall and two opposing first side walls, the two first side walls being respectively connected to opposite sides of the first bottom wall, and the distance between the two opposing first side walls gradually increases along the direction of the first bottom wall toward the opening of the first limiting groove.

[0016] And / or, the second limiting groove has a second bottom wall and two opposing second side walls, the two second side walls being connected to opposite sides of the second bottom wall respectively, and the distance between the two opposing second side walls gradually increases along the direction of the second bottom wall toward the opening of the second limiting groove.

[0017] According to some embodiments of the present invention, the first rotating shaft is further provided with a first abutting portion, the first abutting portion being disposed around the radial outer surface of the first rotating shaft, and the surrounding angle of the first abutting portion around the axis of the first rotating shaft is greater than or equal to 180°. The rotating assembly further includes a first limiting member, the first limiting member being fixed to the rotating member, and the first limiting member being used to abut against the first abutting portion to limit the rotation of the first rotating shaft.

[0018] And / or, the second rotating shaft is further provided with a second abutment portion, the second abutment portion being disposed around the radial outer surface of the second rotating shaft, and the surrounding angle of the second abutment portion around the axis of the second rotating shaft is greater than or equal to 180°. The rotating assembly further includes a second limiting member, the second limiting member being fixed to the rotating member, and the second limiting member being used to abut against the second abutment portion to limit the rotation of the second rotating shaft.

[0019] According to some embodiments of the present invention, a first body is further included, the first body being provided with a third connecting portion and a fourth connecting portion, the third connecting portion being fixedly connected to the first rotating shaft, the fourth connecting portion being used to be fixedly connected to the first door, the rotating assembly further including a spacer, the spacer being fixed to the outer surface of the rotating assembly, the spacer being located between the first connecting portion and the second connecting portion, and the spacer protruding from the outer surface of the rotating assembly along the direction of the third connecting portion toward the fourth connecting portion, the spacer being used to cover the gap between the connection between the first body and the rotating assembly.

[0020] An opening and closing door according to an embodiment of the present invention includes:

[0021] The hinge of this invention embodiment;

[0022] The first door is connected to the first main body;

[0023] The second door is connected to the second main body.

[0024] The opening and closing door according to the embodiments of the present invention has at least the following beneficial effects: by applying the hinges of the embodiments of the present invention, the opening and closing door can achieve 180 degrees of opening and closing inward and outward, and makes the door return to its closed position accurately, and on this basis reduces the probability of the opening and closing door getting stuck or jammed during use.

[0025] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0027] Figure 1 This is a schematic diagram of a hinge according to an embodiment of the present invention;

[0028] Figure 2 for Figure 1 A schematic diagram of the hinge from another perspective;

[0029] Figure 3 for Figure 1 Top view of the hinge in the middle;

[0030] Figure 4 for Figure 3 A sectional view along the center CC;

[0031] Figure 5 for Figure 3 A sectional view along the middle DD;

[0032] Figure 6 This is a schematic diagram of the rotating assembly according to an embodiment of the present invention;

[0033] Figure 7 for Figure 6 A schematic diagram of the first rotating shaft in the process;

[0034] Figure 8 for Figure 7 A sectional view along the middle edge BB;

[0035] Figure 9 This is a cross-sectional view of a rotating assembly according to another embodiment of the present invention;

[0036] Figure 10 This is a partial schematic diagram of the hinge in the closed state according to an embodiment of the present invention;

[0037] Figure 11 This is a partial schematic diagram of the hinge in the closed state according to another embodiment of the present invention;

[0038] Figure 12 This is a partial schematic diagram of the hinge opening process according to an embodiment of the present invention;

[0039] Figure 13 This is a partial schematic diagram of the opening process of a hinge according to another embodiment of the present invention;

[0040] Figure 14 This is a schematic diagram of the closed state of the opening and closing door according to an embodiment of the present invention;

[0041] Figure 15 for Figure 14 A cross-sectional view of the door in its closed state;

[0042] Figure 16 This is a schematic diagram of the open state of the door according to an embodiment of the present invention;

[0043] Figure 17 This is a schematic diagram of the open state of a door according to another embodiment of the present invention.

[0044] Figure label:

[0045] Rotating assembly 100, rotating component 110, positioning groove 115, receiving groove 120, first connecting part 130, second connecting part 140, first rotating shaft 150, first limiting groove 155, first bottom wall 156, first side wall 157, first supporting part 160, first limiting component 165, second rotating shaft 170, second limiting groove 175, second bottom wall 176, second side wall 177, second supporting part 180, second limiting component 185, cover plate 190;

[0046] Limiting rod 200, first limiting post 210, second limiting post 220, first elastic element 230, second elastic element 240, limiting block 250, limiting hole 260, spacer 270;

[0047] First main body 300, second main body 310, third connecting part 320, fourth connecting part 330;

[0048] Hinge 400;

[0049] 500 for the opening and closing door, 510 for the first door, 520 for the second door, and 530 for the sealing element. Detailed Implementation

[0050] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0051] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0052] In the description of this invention, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0053] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0054] In the description of this invention, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0055] A hinge with dual axes enables 360-degree rotation of the movable door. The dual axes correspond to the relative rotation between the fixed door and the rotating component, and the relative rotation between the movable door and the rotating component, respectively. In related technologies, a limit rod is installed within the rotating component of the hinge to restrict the relative rotation between the fixed door and the hinge, and between the movable door and the hinge, thereby ensuring accurate return of the door to its original position. However, even with the limit rod, the rotation of the pivot may become stuck or jammed during opening and closing, affecting the door's usability. Therefore, this invention proposes a hinge to solve the above problems.

[0056] The hinges and opening / closing doors of embodiments of the present invention are described below with reference to the accompanying drawings.

[0057] It should be noted that, Figure 8 To clearly illustrate the cooperation between the first supporting part 160 and the first limiting member 165, a cross-section of the rotating member 110 is shown here. Figure 15 The arrows in the image indicate the path and direction of the liquid's movement.

[0058] Reference Figures 1 to 7 , Figures 10 to 13 According to an embodiment of the present invention, the hinge 400 includes a first body 300, a second body 310, and a rotating assembly 100. The rotating assembly 100 includes a rotating member 110, a first rotating shaft 150, a second rotating shaft 170, and a limiting rod 200. The rotating member 110 has a first connecting portion 130 and a second connecting portion 140. The first connecting portion 130 is rotatably connected to the first rotating shaft 150, and the second connecting portion 140 is rotatably connected to the second rotating shaft 170. The first body 300 is fixedly connected to the first rotating shaft 150, and the second body 310 is fixedly connected to the second rotating shaft 170. The first rotating shaft 150 and the second rotating shaft 170 are respectively used to fix them to the door. The first rotating shaft 150 is provided with a first limiting groove 155, the second rotating shaft 170 is provided with a second limiting groove 175, and the rotating part 110 is also provided with a receiving groove 120. The two ends of the receiving groove 120 are respectively connected to the first limiting groove 155 and the second limiting groove 175. The first limiting groove 155 and the second limiting groove 175 are arranged opposite to each other. The minimum distance between the bottom of the first limiting groove 155 and the outer surface of the second rotating shaft 170 is L2, and the minimum distance between the bottom of the second limiting groove 175 and the outer surface of the first rotating shaft 150 is L3.

[0059] A limiting rod 200 is disposed within the receiving groove 120. The length of the limiting rod 200 is L1. Along the length direction of the limiting rod 200, one end extends into the first limiting groove 155, and the other end extends into the second limiting groove 175. Wherein, L1≤L2 and L1≤L3, to ensure that the limiting rod 200 can disengage from either the first limiting groove 155 or the second limiting groove 175 during rotation. The limiting rod 200 can restrict the rotation of the other of the first rotating shaft 150 and the rotating member 110 when one of the first rotating shaft 150 and the second rotating shaft 170 rotates. Along the length of the limiting rod 200, the cross-sectional area of ​​the limiting rod 200 gradually decreases. This reduces interference with the walls of the first limiting groove 155 or the second limiting groove 175 when the limiting rod 200 rotates with the rotating component 110. The outer surface of the limiting rod 200 also provides a guiding effect, allowing it to be pushed out of the first limiting groove 155 when it abuts against the wall of the first limiting groove 155, and pushed out of the second limiting groove 175 when it abuts against the wall of the second limiting groove 175. This reduces the likelihood of the first rotating shaft 150 and the second rotating shaft 170 jamming or getting stuck during rotation. Consequently, when the hinge 400 is applied to the opening and closing door 500, the likelihood of the opening and closing door 500 jamming or getting stuck during use is reduced.

[0060] Reference Figures 8 to 13 Taking the second rotating shaft 170 as an example, and the rotating component 110 rotating relative to the second rotating shaft 170, when the rotating component 110 rotates relative to the second rotating shaft 170, the limiting rod 200 abuts against the inner surface of the second limiting groove 175 as the rotating component 110 rotates. Guided by the inclined or curved surface of the limiting rod 200, it disengages from the radial outer surface of the second limiting groove 175 and the second rotating shaft 170. At this time, one end of the limiting rod 200 facing the first rotating shaft 150 is inserted into the first limiting groove 155 under the abutment of the outer surface of the second rotating shaft 170. The limiting rod 200 then connects the first rotating shaft 150 and the rotating component 110. 10. Locking prevents the first rotating shaft 150 from rotating relative to the rotating member 110, ensuring that when the rotating member 110 rotates back to the closed state relative to the second rotating shaft 170, the relative position of the first rotating shaft 150 and the rotating member 110 remains unchanged. This ensures that the relative positional relationship between the first rotating shaft 150, the rotating member 110, and the second rotating shaft 170 is consistent with the initial position when the door is closed. This ensures that when the hinge 400 is applied to the opening and closing door 500, the door returns to its closed position accurately after opening. When the first rotating shaft 150 is fixed, and the rotating component 110 rotates relative to the first rotating shaft 150, the limiting rod 200 is inserted into the second limiting groove 175 as the rotating component 110 rotates to lock the rotating component 110 and the second rotating shaft 170, thereby limiting the rotation between the second rotating shaft 170 and the rotating component 110, and ensuring that when the hinge 400 is applied to the opening and closing door 500, the door returns to the closed state after opening, and the return position is accurate.

[0061] Specifically, the outer surface of the limiting rod 200 is a sloping or arc-shaped curved surface, which guides the movement of the limiting rod 200. The first main body 300 is fixedly connected to the first door 510, and the second main body 310 is fixedly connected to the second door 520, so that the first door 510, the second door 520, and the hinge 400 together form the opening and closing door 500. (Refer to...) Figure 4 The first main body 300 and the first rotating shaft 150, and the second main body 310 and the second rotating shaft 170, can be mutually fixed by pre-tightening bolts. The number of pre-tightening bolts is not limited, as long as the fixation between the first main body 300 and the first rotating shaft 150, and between the second main body 310 and the second rotating shaft 170, is secure. Gaskets can also be provided between the contact surfaces of the first main body 300 and the rotating component 110, and between the second main body 310 and the rotating component 110, to reduce wear during relative rotation between the two components.

[0062] Furthermore, the inner surfaces of the first limiting groove 155 and the second limiting groove 175 can also be provided with elastic pads or elastic adhesive layers, so that when the first rotating shaft 150 and the second rotating shaft 170 rotate to the point where the first limiting groove 155 and the second limiting groove 175 are opposite each other, the limiting rod 200 can pop out of the first limiting groove 155 or the second limiting groove 175, so that the limiting rod 200 is located in a suitable position within the receiving groove 120, avoiding the limiting rod 200 being completely located within the first limiting groove 155 or the second limiting groove 175, thereby affecting the subsequent rotation of the first rotating shaft 150 or the second rotating shaft 170.

[0063] As an improvement to the above scheme, refer to Figure 10 The first limiting groove 155 has a first bottom wall 156 and two opposing first side walls 157. The two first side walls 157 are respectively connected to the opposite sides of the first bottom wall 156. Along the direction of the first bottom wall 156 toward the opening of the first limiting groove 165, the distance between the two opposing first side walls 157 gradually increases, so that when the limiting rod 200 rotates with the rotating member 110, the interference between the limiting rod 200 and the groove wall of the first limiting groove 155 can be further reduced, and the first side walls 157 play a further guiding role, so that when the limiting rod 200 abuts against the first side wall 157, the limiting rod 200 is pushed out of the first limiting groove 155. And / or, the second limiting groove 175 has a second bottom wall 176 and two opposing second side walls 177. The two second side walls 177 are respectively connected to the opposite sides of the second bottom wall 176. Along the direction of the second bottom wall 176 toward the groove opening of the second limiting groove 175, the distance between the two opposing second side walls 177 gradually increases, so that when the limiting rod 200 rotates together with the rotating member 110, the interference between the limiting rod 200 and the groove wall of the second limiting groove 175 can be further reduced, and the second side walls 177 play a further guiding role, so that when the limiting rod 200 abuts against the second side wall 177, the limiting rod 200 is pushed out of the second limiting groove 175. By configuring the grooves in the first sidewall 157 and the second sidewall 177, the probability of the first pivot 150 and the second pivot 170 getting stuck or jammed during rotation can be further reduced. Thus, when the hinge 400 is applied to the door 500, the probability of the door 500 getting stuck or jammed during use can be further reduced.

[0064] Specifically, the first sidewall 157 is set as an inclined surface or an arc surface, and the second sidewall 177 is set as an inclined surface or an arc surface. The inclined surface or arc surface plays a guiding role in the movement of the limiting rod 200.

[0065] As an improvement to the above scheme, referring to Figure 2 and Figure 4The rotating assembly 100 also includes a limiting block 250, which is disposed in the receiving groove 120 and has a limiting hole 260. The limiting rod 200 is inserted into the limiting hole 260. The limiting block 250 can limit the position of the limiting rod 200 in the receiving groove 120 and the direction of movement of the limiting rod 200.

[0066] Specifically, the limiting block 250 can be fixed to the inner surface of the receiving groove 120 by bolt pre-tightening, bonding, or welding. The limiting block 250 can hold the limiting rod 200 in the middle position of the receiving groove 120, and when the limiting rod 200 moves along the length direction, the limiting rod 200 only rubs against the wall of the limiting hole 260. Compared with the friction between the limiting rod 200 and the groove wall of the receiving groove 120, the limiting rod 200 experiences less friction, and the hinge 400 rotates more smoothly. Furthermore, the wall of the limiting hole 260 restricts the radial movement of the limiting rod 200, limiting the movement direction of the limiting rod 200 to the extension direction of the limiting hole 260, thereby ensuring that the limiting rod 200 can enter or exit the first limiting groove 155 at a set position, or ensuring that the limiting rod 200 can enter or exit the second limiting groove 175 at a set position.

[0067] Reference Figure 4 When the limiting rod 200 passes through the limiting hole 260, a portion of the bottom of the limiting rod 200 abuts against the wall of the limiting hole 260. When the limiting rod 200 moves along its length, it may protrude more on one side and less on the other side relative to the limiting block 250. The side of the limiting rod 200 that protrudes more tends to tilt downwards. When the tilting tendency is too large, the limiting rod 200 is subjected to uneven force and its movement is unstable. Therefore, the limiting block 250 is positioned between the first rotating shaft 150 and the second rotating shaft 170, which can better maintain the limiting of the limiting rod 200. However, aligning the limiting block 250 during assembly is time-consuming.

[0068] Based on the above issues, further, referring to Figure 5 A positioning groove 115 is formed on the inner wall of the receiving groove 120, and the limiting block 250 is inserted into the positioning groove 115. By providing the positioning groove 115 to position the rotating part 110, the efficiency of assembling the limiting block 250 onto the rotating part 110 can be improved, and the assembly difficulty of the limiting block 250 can be reduced. Specifically, the inner wall of the receiving groove 120 includes the groove bottom and sidewalls constituting the receiving groove 120. The positioning groove 115 can be formed alone on the groove bottom or sidewalls of the receiving groove, or it can be formed on both the groove bottom and sidewalls of the receiving groove 120.

[0069] As an improvement to the above scheme, referring to Figure 4 , Figures 11 to 13The rotating assembly 100 further includes a first elastic element 230, a second elastic element 240, a first limiting post 210, and a second limiting post 220. The first elastic element 230 and the second elastic element 240 are respectively sleeved on the outer surface of the limiting rod 200 and located at both ends of the limiting block 250. The first end of the first elastic element 230 and the first end of the second elastic element 240 respectively abut against both ends of the limiting block 250. The first limiting post 210 and the second limiting post 220 are respectively fixedly connected to both ends of the limiting rod 200 and protrude radially from the outer surface of the limiting rod 200. The first limiting post 210 abuts against the second end of the first elastic element 230, and the second limiting post 220 abuts against the second end of the second elastic element 240. The cooperation of the limiting block 250, the first elastic element 230, the second elastic element 240, the first limiting post 210 and the second limiting post 220 can realize the reset of the limiting rod 200 in the receiving groove 120, thereby reducing the probability that the limiting rod 200 will always be in the first limiting groove 155 or the second limiting groove 175, thus affecting the rotation of the hinge 400.

[0070] Specifically, refer to Figure 11 When the hinge 400 is in the closed state, the first elastic element 230 and the second elastic element 240 are not compressed, and the limiting rod 200 is located at the center position between the first rotating shaft 150 and the second rotating shaft 170. (Refer to...) Figure 12 and Figure 13 When the rotating component 110 rotates relative to the second rotating shaft 170, the limiting rod 200 disengages from the second limiting groove 175 and abuts against the outer surface of the second rotating shaft 170. At this time, as the limiting rod 200 moves towards the first rotating shaft 150 and enters the first limiting groove 155, the second elastic element 240 is compressed by the limiting block 250 and the second limiting post 220. When the hinge 400 subsequently returns to the closed position, the first limiting groove 155 and the second limiting groove 175 are opposite each other, and the limiting rod 200 moves towards the second rotating shaft 170 under the action of the second elastic element 240, stopping its movement after the second elastic element 240 has released its elastic force. Understandably, since the limiting rod 200 has a first elastic element 230 on the other side, when the limiting rod 200 moves excessively in the direction toward the second rotating shaft 170, the first elastic element 230 will also be compressed by the limiting block 250 and the first limiting post 210. The elastic force of the first elastic element 230 will pull the limiting rod 200 back, and the limiting rod 200 will eventually return to its original position. Figure 10 The initial position when the door is closed.

[0071] The first elastic element 230 and the second elastic element 240 can be selected as springs, bellows, or elastic rubber. The first limiting post 210 and the second limiting post 220 can be selected as protruding posts or annular support rings. The first limiting post 210 and the second limiting post 220 can be integrally formed with the first limiting rod 200, or they can be connected to the limiting rod 200 by welding or bonding.

[0072] Furthermore, through holes are provided at both ends of the limiting rod 200, and the first limiting post 210 and the second limiting post 220 are respectively inserted into the through holes with an interference fit. The fit between the first limiting post 210 and the through hole and the fit between the second limiting post 220 and the through hole can achieve a detachable connection, thereby reducing the assembly difficulty of the first elastic element 230 and the second elastic element 240 with the limiting rod 200, and facilitating the removal of the first elastic element 230 and the second elastic element 240 from the limiting rod 200. When the first elastic element 230 and the second elastic element 240 lose their elasticity due to structural fatigue, they can be replaced to continue to maintain the reset function of the limiting rod 200 and extend the service life of the hinge 400.

[0073] On the other hand, the first limiting post 210 and the second limiting post 220 can be configured as threaded posts, and the limiting rod 200 is provided with a radially arranged threaded hole. The threaded post and the threaded hole are detachably connected by a thread, and the engagement between the threaded post and the threaded hole can effectively adjust the length of the threaded post protruding radially along the limiting rod 200. Alternatively, the first limiting post 210 and the second limiting post 220 can be configured as a retaining ring, with an internal thread and the limiting rod 200 having an external thread. The retaining ring and the limiting rod 200 are detachably connected by a thread, and the engagement between the internal thread of the retaining ring and the external thread of the limiting rod 200 can effectively adjust the distance between the retaining ring and the limiting block 250, thereby ensuring that the first elastic element 230 or the second elastic element 240 is abutted and adjusting the amount of compression of the first elastic element 230 and the second elastic element 240. Alternatively, it is also feasible to have buckles on the first limiting post 210 and the second limiting post 220, and a slot on the limiting rod 200, so that a detachable connection can be achieved by snapping.

[0074] During use, since the receiving groove 120 is exposed to the outside environment, when the limiting block 250 is not securely fixed or its pre-tightening weakens with use, the limiting block 250, the first elastic element 230, and the second elastic element 240 may detach from the receiving groove 120 with the movement of the first rotating shaft 150 or the second rotating shaft 170. Furthermore, the first elastic element 230 and the second elastic element 240 are directly exposed to the outside environment and are easily exposed to external liquids or gases, potentially accelerating the oxidation rate of the first elastic element 230 and the second elastic element 240, thereby affecting their elasticity. To address the above problems, this embodiment also provides an improvement: the rotating assembly 100 further includes a cover plate 190, which is fixed to the rotating component 110 and covers the receiving groove 120. By sealing the receiving groove 120 with the cover plate 190, the inner surface of the cover plate 190 and the receiving groove 120 can jointly define the receiving cavity, thereby placing the limiting rod 200, the limiting block 250, the first elastic element 230 and the second elastic element 240 inside the rotating member 110 and preventing them from directly contacting the outside, which is beneficial to extending the service life of the hinge 400.

[0075] Specifically, the cover plate 190 and the rotating component 110 can be detachably connected by bolts or other pre-tightening components, or they can be fixedly connected by bonding or welding. The cover plate 190 can directly abut against the limiting block 250, thereby pressing the limiting block 250 against the inner surface of the receiving groove 120 and fixing the limiting block 250. With the rotating component 110 having a positioning groove 115, the cover plate 190 abuts against the limiting block 250, pressing the limiting block 250 against the positioning groove 115, thereby fixing the limiting block 250. The limiting block 250 does not need to be fixedly connected to the rotating component 110 by other means.

[0076] Embodiments of the present invention also provide a hinge 400, see reference Figure 5 , Figure 7 , Figure 8 and Figure 9The first rotating shaft 150 is further provided with a first abutting portion 160, which is arranged around the radial outer surface of the first rotating shaft 150, and the angle of the first abutting portion 160 around the axis of the first rotating shaft 150 is greater than or equal to 180°. The rotating assembly 100 also includes a first limiting member 165, which is fixed to the rotating member 110 and is used to abut against the first abutting portion 160 to limit the rotation of the first rotating shaft 150; and Alternatively, the second rotating shaft 170 may also be provided with a second abutment portion 180, which is disposed around the radial outer surface of the second rotating shaft 170, and the angle of the second abutment portion 180 around the axis of the second rotating shaft 170 is greater than or equal to 180°. The rotating assembly 100 may also include a second limiting member 185, which is fixed to the rotating member 110 and is used to abut against the second abutment portion 180 to limit the rotation of the second rotating shaft 170. The cooperation between the first limiting member 165 and the first abutting part 160 can limit the rotation angle of the first rotating shaft 150 relative to the rotating member 110 to within 180°. The cooperation between the second limiting member 185 and the second abutting part 180 can limit the rotation angle of the second rotating shaft 170 relative to the rotating member 110 to within 180°. This limits the rotation angle of the first door 510 and the second door 520 when the hinge 400 is applied to the opening and closing door 500, and reduces the probability of the first door 510 and the second door 520 colliding with each other due to excessive rotation.

[0077] Specifically, the first limiting member 165 and the second limiting member 185 can be bolts, with corresponding threaded holes on the outer surface of the rotating member 110. The first limiting member 165 and the second limiting member 185 are threadedly connected to the rotating member 110 and screwed into the interior of the rotating member 110, so that the first limiting member 165 abuts against the outer surface of the first rotating shaft 150, and the second limiting member 185 abuts against the outer surface of the second rotating shaft 170. The first abutting part 160 can be a protrusion along the radial direction of the first rotating shaft 150. When the first rotating shaft 150 rotates until the protrusion abuts against the first limiting member 165, the rotation of the first rotating shaft 150 is restricted. The first abutting part 160 can also be defined by providing an annular groove on the first rotating shaft 150, the annular groove surrounding the circumference of the first rotating shaft 150, and the surrounding angle around the axis of the first rotating shaft 150 is less than or equal to 180°. When an annular groove is provided, the first limiting member 165 can move within the annular groove. When the first rotating shaft 150 rotates to the point where the first limiting member 165 abuts against the groove wall, the rotation of the first rotating shaft 150 is restricted. The second limiting member 185 and the second abutting part 180 are configured in the same way as the first limiting member 165 and the first abutting part 160, and will not be described again here.

[0078] It is understandable that by adjusting the circumferential angle of the first abutment 160 along the axis of the first pivot 150 and the circumferential angle of the second abutment 180 along the axis of the second pivot 170, the overall opening and closing angle of the door 500 can be customized. For example, referring to... Figure 8 The rotating component 110 in the figure can rotate 180 degrees relative to the first rotating shaft 150; see reference. Figure 9 The rotating part 110 in the figure can rotate 90 degrees relative to the first rotating shaft 150. By adjusting the first supporting part 160 and the second supporting part 180, the opening and closing of the door 500 at different angles can be realized.

[0079] When the hinge 400 is used in a relatively humid environment or where liquids splash, such as a bathroom, the hinge door 500 needs to be waterproofed to prevent moisture or liquid from flowing from one side of the hinge door 500 to the opposite side. Based on the above problems, embodiments of the present invention also propose an improvement, referring to... Figure 5 and Figure 15 The first body 300 of the hinge 400 is provided with a third connecting portion 320 and a fourth connecting portion 330. The third connecting portion 320 is fixedly connected to the first rotating shaft 150, and the fourth connecting portion 330 is used to fixally connect to the first door 510. The rotating assembly 100 also includes a spacer 270, which is fixed to the outer surface of the rotating member 110. The spacer 270 is located between the first connecting portion 130 and the second connecting portion 140, and protrudes from the outer surface of the rotating member 110 along the direction from the third connecting portion 320 toward the fourth connecting portion 330. By providing the spacer 270, the gap between the connection between the first body 300 and the rotating member 110 is covered, thereby reducing the probability of liquid seeping out from the gap between the connection between the first body 300 and the rotating member 110. Furthermore, when the first door 510 rotates relative to the second door 520, there is a certain probability that the first door 510 will have rigid friction or collision with the second body 310 during the rotation process. The spacer 270 can separate the first door 510 and the rotating member 110 by a certain distance, thereby reducing the probability of the first door 510 having rigid friction or collision with the second body 310.

[0080] Specifically, refer to Figure 15The arrows in the diagram indicate the direction of liquid flow. To ensure relative rotation between the rotating component 110 and the first main body 300, a certain gap is usually reserved between the rotating connection points of the first main body 300 and the rotating component 110 to avoid interference. Liquid has a certain probability of seeping out from the gap between the first main body 300 and the rotating component 110. The spacer 270 blocks the gap, thereby reducing the probability of liquid seeping from one side of the opening / closing door 500 to the other. The spacer 270 can be fixed to the rotating component 110 by bolts or other pre-tightening components, or it can be fixed by welding, bonding, or other methods. Alternatively, the spacer 270 can be integrally formed onto the rotating component 110.

[0081] Reference Figures 14 to 17 According to an embodiment of the present invention, the hinged door 500 includes a hinge 400, a first door 510, and a second door 520. The hinge 400 further includes a first body 300 and a second body 310. The first body 300 is fixedly connected to a first pivot 150, and the second body 310 is fixedly connected to a second pivot 170. The first door 510 is connected to the first body 300, and the second door 520 is connected to the second body 310. By applying the hinge 400 of this embodiment, the hinged door 500 can achieve 180-degree opening and closing inwards and outwards, and ensures accurate return to its closed position, thereby reducing the probability of the hinged door 500 jamming or getting stuck during use.

[0082] Specifically, the first door 510 is connected to the first main body 300 along the side of the first connecting portion 130 facing the second connecting portion 140, and the second door 520 is connected to the second main body 310 along the side of the second connecting portion 140 facing the first connecting portion 130. This ensures that when the door 500 is closed, the first door 510 and the second door 520 are as close to each other as possible to a straight line, thereby reducing the space occupied by the door 500. Furthermore, when the first door 510 and the second door 520 rotate relative to each other to open the door, the probability of collision between the first door 510 and the second door 520 is reduced because the first main body 300 or the second main body 310 will separate the two doors.

[0083] As an improvement to the above scheme, refer to Figure 15 The opening and closing door 500 also includes a sealing element 530, which is fixed to the side of the second door 520 facing the first door 510. The sealing element 530 abuts against the rotating member 110 and the first door 510 at the same time. The sealing element 530 is used to close the gap between the second door 520 and the rotating member 110, as well as the gap between the first door 510 and the second door 520, thereby improving the sealing performance of the opening and closing door 500.

[0084] To ensure the airtightness of the hinged door 500 when used in environments containing liquids, such as bathrooms, the gap between the first door 510 and the second door 520 needs to be sealed when the door 500 is closed. Therefore, a sealing element 530 is provided on the second door 520 to abut and seal the gap between the first door 510 and the second door 520 and the gap between the second door 520 and the rotating member 110 when the door is closed. However, a certain gap will still exist between the rotating member 110 and the first door 510, and the gap between the first body 300 and the first connecting part 130 is connected to the gap between the rotating member 110 and the first door 510. Therefore, there is still a possibility of water leakage.

[0085] Furthermore, the spacer 270 abuts against the rotating member 110 and the first body 300, thereby sealing the gap between the first body 300 and the first connecting part 130, reducing the probability of liquid seeping from the gap, and thus cooperating with the seal 530 to further improve the sealing performance of the opening and closing door 500, reducing the probability of liquid seeping from one side of the opening and closing door 500 to the opposite side.

[0086] Specifically, the first main body 300 is provided with a third connecting portion 320 and a fourth connecting portion 330. The third connecting portion 320 is fixedly connected to the first rotating shaft 150, and the fourth connecting portion 330 is fixedly connected to the first door 510. The rotating assembly 100 also includes a spacer 270, which is fixed to the outer surface of the rotating member 110. The spacer 270 is located between the first connecting portion 130 and the second connecting portion 140. The spacer 270 protrudes from the outer surface of the rotating member 110 along the direction from the third connecting portion 320 toward the fourth connecting portion 330, and the spacer 270 abuts against the first door 510. The sealing member 530 seals the gap between the second main body 310 and the second connecting portion 140, and the spacer 270 seals the gap between the first main body 300 and the first connecting portion 130.

[0087] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments, and various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention. Furthermore, the embodiments of the present invention and the features thereof can be combined with each other unless otherwise specified.

Claims

1. A hinge, characterized in that, include: First subject; Second subject; A rotating assembly includes a rotating component, a first rotating shaft, a second rotating shaft, and a limiting rod. The rotating component has a first connecting portion and a second connecting portion, and the rotating component is provided with a receiving groove. The first connecting portion is rotatably connected to the first rotating shaft, and the second connecting portion is rotatably connected to the second rotating shaft. The first main body is fixedly connected to the first rotating shaft, and the second main body is fixedly connected to the second rotating shaft. The first rotating shaft is provided with a first limiting groove, and the second rotating shaft is provided with a second limiting groove. The two ends of the receiving groove are respectively connected to the first limiting groove and the second limiting groove. The first limiting groove and the second limiting groove are arranged opposite to each other. The minimum distance between the bottom of the first limiting groove and the outer surface of the second rotating shaft is L2, and the minimum distance between the bottom of the second limiting groove and the outer surface of the first rotating shaft is L3. The limiting rod is disposed in the receiving groove. The length of the limiting rod is L1. Along the length direction of the limiting rod, one end of the limiting rod extends into the first limiting groove, and the other end of the limiting rod extends into the second limiting groove. Wherein, L1≤L2 and L1≤L3. Along the length direction of the limiting rod, the cross-sectional area of ​​the limiting rod gradually decreases.

2. The hinge according to claim 1, characterized in that, The rotating assembly further includes a limiting block disposed in the receiving groove. The limiting block has a limiting hole, and the limiting rod is inserted into the limiting hole, with the hole wall of the limiting hole abutting against the limiting rod.

3. The hinge according to claim 2, characterized in that, A positioning groove is formed on the inner wall of the receiving groove, and the limiting block is inserted into the positioning groove.

4. The hinge according to claim 2, characterized in that, The rotating assembly further includes a first elastic element, a second elastic element, a first limiting post, and a second limiting post. The first elastic element and the second elastic element are respectively sleeved on the outer surface of the limiting rod and located at both ends of the limiting block. The first end of the first elastic element and the first end of the second elastic element respectively abut against both ends of the limiting block. The first limiting post and the second limiting post are respectively fixedly connected to both ends of the limiting rod and protrude radially from the outer surface of the limiting rod. The first limiting post abuts against the second end of the first elastic element, and the second limiting post abuts against the second end of the second elastic element.

5. The hinge according to claim 4, characterized in that, The limiting rod has through holes at both ends, and the first limiting post and the second limiting post are respectively inserted into the through holes with an interference fit.

6. The hinge according to claim 1, characterized in that, The first limiting groove has a first bottom wall and two opposing first side walls. The two first side walls are respectively connected to opposite sides of the first bottom wall. Along the direction of the first bottom wall toward the opening of the first limiting groove, the distance between the two opposing first side walls gradually increases. And / or, the second limiting groove has a second bottom wall and two opposing second side walls, the two second side walls being connected to opposite sides of the second bottom wall respectively, and the distance between the two opposing second side walls gradually increases along the direction of the second bottom wall toward the opening of the second limiting groove.

7. The hinge according to claim 1, characterized in that, The rotating assembly further includes a cover plate, which is fixed to the rotating component and covers the receiving groove.

8. The hinge according to claim 1, characterized in that, The first rotating shaft is further provided with a first abutting part, which is arranged around the radial outer surface of the first rotating shaft, and the surrounding angle of the first abutting part around the axis of the first rotating shaft is greater than or equal to 180°. The rotating assembly further includes a first limiting member, which is fixed to the rotating member and is used to abut against the first abutting part to limit the rotation of the first rotating shaft. And / or, the second rotating shaft is further provided with a second abutment portion, the second abutment portion being disposed around the radial outer surface of the second rotating shaft, and the surrounding angle of the second abutment portion around the axis of the second rotating shaft is greater than or equal to 180°. The rotating assembly further includes a second limiting member, the second limiting member being fixed to the rotating member, and the second limiting member being used to abut against the second abutment portion to limit the rotation of the second rotating shaft.

9. The hinge according to claim 1, characterized in that, The first main body is provided with a third connecting part and a fourth connecting part. The third connecting part is fixedly connected to the first rotating shaft, and the fourth connecting part is used to be fixedly connected to the first door. The rotating assembly also includes a spacer. The spacer is fixed to the outer surface of the rotating assembly. The spacer is located between the first connecting part and the second connecting part, and the spacer protrudes from the outer surface of the rotating assembly along the direction of the third connecting part toward the fourth connecting part. The spacer is used to cover the gap between the connection between the first main body and the rotating assembly.

10. A hinged door, characterized in that, include: The hinge according to any one of claims 1 to 9; The first door is connected to the first main body; The second door is connected to the second main body.

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