Hinge and working machine

Abstract

The present application relates to the technical field of connecting member, and provides a hinge and working machine, the hinge comprising a first fixing part; a second fixing part, which is rotationally connected with the first fixing part and is used for switching the hinge between an open state and a closed state; a first limiting assembly and a second limiting assembly, which are both arranged on the first fixing part; the first limiting assembly is used for limiting the open state; during the process from the open state to the closed state, the second limiting assembly can be self-limited and locked with the second fixing part. The hinge and working machine provided by the present application can self-limit and lock the second limiting assembly with the second fixing part during the process from the open state to the closed state; when the hinge is closed under accidental or non-subjective conditions, the first fixing part starts to rotate and close; when rotating by a certain angle, the second limiting assembly contacts the second fixing part, preventing the first fixing part from continuing to close; at this time, the hinge has the automatic limiting effect of closing, so as to prevent accidental complete closing and avoid danger.

Description

Technical Field

[0001] This invention relates to the field of connecting component technology, and more particularly to a hinge and a working machine. Background Technology

[0002] With the diversified application and development of construction machinery, the structure of construction machinery is becoming more refined, user-friendly, and convenient for operation and maintenance. In current construction machinery, the main body coverings include left and right side doors, rear doors, top covers, and bottom covers. Taking mini excavators as an example, the side doors and rear doors play an important role in the daily inspection and maintenance of mini excavators. According to relevant requirements, the doors and covers that play a maintenance role should be able to be fixed in position after being opened to a predetermined angle.

[0003] In existing technologies, self-locking hinges are typically used to fix the hinge's position when it is open or closed in order to meet the above requirements. However, existing self-locking hinges can only limit the hinge to its position when it is fully open or fully closed. If the hinge closes unexpectedly, it will close completely, which can easily lead to danger. Summary of the Invention

[0004] This invention provides a hinge and a working machine to solve the problem that in the prior art, self-limiting hinges can only achieve limiting when the hinge is fully open or fully closed. However, if the hinge closes unexpectedly, it can easily lead to a dangerous situation.

[0005] This invention provides a hinge, comprising:

[0006] First fastener;

[0007] The second fixing member is rotatably connected to the first fixing member and is used to switch the hinge between the open and closed states.

[0008] The first limiting component and the second limiting component are both disposed on the first fixing member;

[0009] The first limiting component is used to limit the open state;

[0010] During the process of transitioning from the open state to the closed state, before reaching the closed state, the second limiting component can self-lock with the second fixing member.

[0011] According to a hinge provided by the present invention, the second limiting component includes:

[0012] A pair of limiting plates are arranged opposite to each other, and each limiting plate is rotatably connected to the first fixing member at a rotation point;

[0013] The connecting shaft has two ends that are respectively connected to the limiting plate;

[0014] The elastic element has one end connected to the first fixing element at a first connection point, and the other end connected to the side wall of the limiting plate at a second connection point, with the rotation point and the second connection point located on both sides of the first connection point;

[0015] During the transition from the open state to the closed state, the connecting shaft can self-lock with the second fixing member before reaching the closed state.

[0016] According to a hinge provided by the present invention, the second fixing member includes an integrally connected first side plate, a mounting plate and a second side plate. The edge of the second side plate is configured with a first bend, a second bend, a third bend, a fourth bend and a fifth bend that are smoothly connected in sequence. The end of the second bend near the third bend protrudes towards the side near the connecting shaft, so that the connecting shaft can self-lock with the second bend during the process of the open state entering the closed state.

[0017] According to a hinge provided by the present invention, the end of the fourth bend away from the third bend protrudes toward the side closer to the connecting shaft.

[0018] According to a hinge provided by the present invention, a booster mechanism is further included, the booster mechanism comprising:

[0019] A pivot shaft passes through the first fixing member and the second fixing member;

[0020] A torsion spring is sleeved on the rotating shaft, and the torsion spring is located on both sides of the first side plate;

[0021] One end of the torsion spring abuts against the inner side of the first limiting component, and the other end of the torsion spring abuts against the outer side of the first limiting component.

[0022] According to a hinge provided by the present invention, the second fixing member has a slot for the torsion spring to pass through.

[0023] According to a hinge provided by the present invention, the assist mechanism is provided in a pair, and the pair of rotating shafts respectively pass through the first side plate and the second side plate.

[0024] According to a hinge provided by the present invention, the assist mechanism further includes:

[0025] A torsion spring guide sleeve is sleeved on the outer periphery of the first rotating shaft, and the torsion spring is provided on the outer periphery of the torsion spring guide sleeve;

[0026] An elastic pin is disposed at the end of the first rotating shaft, and the elastic pin passes through the first rotating shaft radially.

[0027] According to a hinge provided by the present invention, the second limiting component further includes:

[0028] The second rotating shaft is rotatably mounted on the first fixing member; and the limiting plate is suspended on the second rotating shaft; and at least one end of the second rotating shaft is provided with a crank handle.

[0029] The present invention also provides a working machine, including the hinge as described in any of the preceding claims.

[0030] The hinge and working machinery provided by the present invention are rotatably connected by a first fixing member and a second fixing member. Both the first limiting component and the second limiting component are disposed on the first fixing member. The first limiting component is used to limit the hinge in the open state, and the second limiting component is used to limit the hinge in the closed state. Moreover, during the process of changing from the open state to the closed state, the second limiting component can self-lock with the second fixing member. When the hinge closes accidentally or unintentionally, the first fixing member begins to rotate to close. When it rotates to a certain angle, the second limiting component contacts the second fixing member and prevents the first fixing member from continuing to close. At this time, the hinge automatically limits the hinge closure to prevent accidental complete closure and avoid danger.

[0031] Furthermore, the second limiting component, comprising a pair of limiting plates, a connecting shaft, and an elastic element, allows the connecting shaft to lock against the edge of the second fixing member during the transition from the open to the closed state. This achieves self-limiting of the first fixing member, automatically limiting its closure when the hinge closes accidentally or unintentionally. Specifically, as the first fixing member begins to rotate and close, the rotating shaft remains in contact with it under the action of the elastic element. When the first fixing member rotates a certain angle, the connecting shaft contacts the second fixing member, preventing further rotation and thus limiting the hinge's closure. When the first fixing member is normally closed, the hinge needs to be closed, and the first fixing member needs to be manually pushed to the unlocked position. Under the action of the elastic element, it passes the second rotating shaft. At this point, the connecting shaft remains in contact with the first fixing member, ensuring the second limiting component remains in the unlocked position without requiring continuous operation of the limiting plates, thus achieving an automatic unlocking retention function.

[0032] Furthermore, through the design of the assist mechanism, the hinge has an assist system for both opening and closing. When the hinge is closing, the first fixed member begins to rotate. When the outer limiting shaft contacts the outer torsion arm of the torsion spring, the torsion spring begins to deform, providing a reaction force. When the hinge is fully closed, the torsion spring provides opening assistance. When the hinge is opening, the first fixed member begins to rotate. When the inner limiting shaft contacts the inner torsion arm of the torsion spring, the torsion spring begins to deform, providing a reaction force. The torsion spring provides closing assistance. Therefore, the hinge has an assist system for both opening and closing, providing assistance during these processes and saving operating force.

[0033] The working machine provided by the present invention has the various advantages described above because it includes the hinge as described above. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0035] Figure 1 This is a side view of the hinge provided by the present invention;

[0036] Figure 2 This is a front view of the hinge provided by the present invention;

[0037] Figure 3 This is an exploded view of the hinge provided by the present invention;

[0038] Figure 4 This is a schematic diagram of the installation structure of the hinge in the closed state provided by the present invention;

[0039] Figure 5 This is a schematic diagram of the installation structure of the hinge in the open state provided by the present invention;

[0040] Figure 6 and Figure 7 This is a schematic diagram of the hinge closing process provided by the present invention;

[0041] Figure 8 and Figure 9 This is a schematic diagram of the hinge opening process provided by the present invention;

[0042] Figure 10 , Figure 11 , Figure 12 and Figure 13 This is a side view of the hinge opening process provided by the present invention;

[0043] Figure 14 This is a schematic diagram of the automatic limiting state when the hinge is accidentally closed, provided by the present invention.

[0044] Figure 15 This is a schematic diagram of the hinge provided by the present invention in its maximum open state;

[0045] Figure 16 and Figure 17 This is a schematic diagram of the hinge provided by the present invention when it has passed the unlock position;

[0046] Figure 18 This is a schematic diagram illustrating the process by which the hinge provided by the present invention continues to rotate and close after exceeding the unlock position;

[0047] Figure label:

[0048] 1. First fixing component; 2. Second fixing component; 3. First limiting component; 4. Second limiting component; 5. Power assist mechanism;

[0049] 21. First side plate; 22. Mounting plate; 23. Second side plate; 231. First bend; 232. Second bend; 233. Third bend; 234. Fourth bend; 235. Fifth bend; 24. Slot;

[0050] 41. Limiting plate; 42. Connecting shaft; 43. Elastic element; 44. Second rotating shaft;

[0051] 51. First pivot; 52. Torsion spring; 53. Torsion spring guide sleeve; 54. Elastic pin; 55. Washer;

[0052] 100. Machine cover; 200. Counterweight body. Detailed Implementation

[0053] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0054] In the description of the embodiments of the present invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0055] The following is combined Figures 1 to 18 The present invention describes a hinge that addresses the shortcomings of existing hinges, which can only achieve a limited angle when the hinge is open and closed, and are prone to danger when the hinge closes unexpectedly.

[0056] like Figure 1-3As shown, a first aspect of the present invention provides a hinge, including a first fixing member 1, a second fixing member 2, a first limiting component 3, and a second limiting component 4. The second fixing member 2 is rotatably connected to the first fixing member 1 to enable the hinge to switch between an open state and a closed state. The first limiting component 3 and the second limiting component 4 are both disposed on the first fixing member 1. The first limiting component 3 is used to limit the hinge in the open state. During the process of transitioning from the open state to the closed state, the second limiting component 4 can self-lock with the second fixing member 2.

[0057] Among them, self-limiting locking can be understood as a device that achieves locking function through its own structure. This locking method usually does not require external operation or adjustment and can automatically adapt to and maintain the locking state.

[0058] like Figure 4 and Figure 5 As shown, the first fixing member 1 is used to connect the machine cover 100, and the second fixing member 2 is used to connect the counterweight body 200. The first fixing member 1 is fixedly connected to the machine cover 100, and the second fixing member 2 is fixedly connected to the counterweight body 200. When the machine cover 100 needs to be opened or closed relative to the counterweight body 200, the corresponding opening and closing states of the first fixing member 1 and the second fixing member 2 are as follows.

[0059] The hinge provided by the present invention, when the hinge closes accidentally or under non-subjective circumstances, the first fixing member 1 begins to rotate and close. When it rotates to a certain angle, the second limiting component 4 contacts the second fixing member 2, preventing the first fixing member 1 from continuing to close. At this time, it plays the role of limiting the hinge closure, so as to prevent accidental complete closure and avoid danger.

[0060] It should be noted that the second limiting component 4 is in the self-limiting locking position with the second fixing member 2 before the hinge enters the closed state. That is, during the process of the hinge moving from the open state to the closed state, before the hinge reaches the fully closed state, the second limiting component 4 can self-limit the second fixing member 2, preventing the first fixing member 1 from continuing to close, thus playing a safety protection role.

[0061] like Figure 3 As shown, the first limiting component 3 includes an inner limiting shaft and an outer limiting shaft, which can be integrally connected. The inner limiting shaft is used to limit the first fixing member 1 and the second fixing member 2 when the component is open. Both the inner and outer limiting shafts are mounted on the first fixing member 1 and can be fixed by welding or by thread. The axes of the inner and outer limiting shafts are perpendicular to the plane of the first fixing member 1 on which they are located, so as to achieve a better limiting effect.

[0062] like Figure 3As shown, in one embodiment of the present invention, the second limiting component 4 may include a limiting plate 41, a connecting shaft 42, and an elastic member 43. The limiting plates 41 are configured as a pair, arranged opposite to each other, and each limiting plate 41 is rotatably connected to the first fixing member 1 at a rotation point. The limiting plate 41 may be a waist-shaped plate. Both ends of the connecting shaft 42 are respectively connected to the limiting plates 41. One end of the elastic member 43 is connected to the first fixing member 1 at a first connection point, and the other end of the elastic member 43 is connected to the side wall of the limiting plate 41 at a second connection point. The rotation point and the second connection point are located on opposite sides of the first connection point. During the transition from the open state to the closed state, the connecting shaft 42 can self-lock with the second fixing member 2. Preferably, the elastic member 43 is a tension spring.

[0063] When the hinge closes unexpectedly and not by design, the first fixing member 1 begins to rotate and close. When it rotates to a certain angle, the connecting shaft 42 contacts the second fixing member 2 under the pulling force of the elastic member 43, preventing the first fixing member 1 from continuing to rotate and close. At this time, it plays the role of limiting the hinge closure, thus enabling the second limiting component 4 to automatically limit the hinge closure.

[0064] like Figure 10-13 As shown, when the hinge is open, the second limiting component 4 is in the closed position. Under the action of the elastic element 43, the connecting shaft 42 is always in contact with the first fixing component 1. When the first fixing component 1 is opened to a certain angle, the connecting shaft 42 will contact the second fixing component 2. Because the force of the elastic element 43 never exceeds the rotation point during the movement of the second limiting component 4, the second limiting component 4 is always in contact with the second fixing component 2. When the first fixing component 1 continues to open to a certain angle, the connecting shaft 42 passes over the second fixing component 2 and continues to be in contact with the first fixing component 1 under the action of the elastic element 43 until the first limiting component 3 contacts the second fixing component 2. At this time, the first fixing component 1 reaches the maximum angle position; that is, the automatic holding function of unlocking can be realized.

[0065] like Figure 9 and Figure 14 As shown, in one embodiment of the present invention, the second fixing member 2 includes a first side plate 21, a mounting plate 22 and a second side plate 23 integrally connected. The edge of the second side plate 23 is configured with a first bend 231, a second bend 232, a third bend 233, a fourth bend 234 and a fifth bend 235 connected smoothly in sequence. The end of the second bend 232 near the third bend 233 protrudes towards the side near the connecting shaft 42, so that the connecting shaft 42 can self-lock with the second bend 232 during the process of entering the closed state from the open state.

[0066] like Figure 14As shown, in one embodiment of the present invention, the end of the fourth bend 234 away from the third bend 233 protrudes toward the side closer to the connecting shaft 42, so as to stabilize the first fixing member 1 and the second fixing member 2 in the closed state.

[0067] The angles and lengths between the first bending portion 231, the second bending portion 232, the third bending portion 233, the fourth bending portion 234, and the fifth bending portion 235 are designed according to actual needs to ensure that the second limiting component 4 can achieve self-locking when it moves from the open state to the closed state. After manual unlocking, it does not need to be held and can remain in the closed state. Moreover, the second limiting component 4 can smoothly transition from the closed state to the open state.

[0068] like Figure 1 As shown, in one embodiment of the present invention, an assist mechanism 5 is also included. The assist mechanism 5 is used to provide opening assistance when the hinge is closed and to provide closing assistance when the hinge is open, so as to reduce the operating force when the hinge is used to open and close a heavy door or machine cover.

[0069] like Figure 3 As shown, specifically, the assist mechanism 5 includes a first rotating shaft 51 and a torsion spring 52. The first rotating shaft 51 passes through the first fixing member 1 and the second fixing member 2. The torsion spring 52 is sleeved on the first rotating shaft 51 and is located on both sides of the first side plate 21. One end of the torsion spring 52 abuts against the inner side of the first limiting component 3, and the other end of the torsion spring 52 abuts against the outer side of the first limiting component 3.

[0070] like Figure 3 As shown, in one embodiment of the present invention, the bottom of the first side plate 21 and the second side plate 23 are both provided with slots 24, which are used for the torsion spring 52 to pass through, so that the torsion spring 52 can provide a reaction force.

[0071] like Figure 6 and Figure 7 As shown, during the closing process of the hinge, the first fixing member 1 begins to rotate. When the outer limiting shaft on the first fixing member 1 contacts the outer torsion arm of the torsion spring 52, the torsion spring 52 begins to deform and provide a reaction force. When the hinge is fully closed, the torsion spring 52 provides opening assistance. When the hinge is used to open a heavy door or machine cover, it can reduce the operator's operating force.

[0072] like Figure 8 and Figure 9 As shown, during the opening process of the hinge, the first fixing member 1 begins to rotate. When the inner limiting shaft on the first fixing member 1 contacts the inner torsion arm of the torsion spring, the torsion spring 52 begins to deform and provide a reaction force. When the hinge is fully open, the torsion spring 52 provides closing assistance. When the hinge is used to close a heavy door or machine cover, it can reduce the operator's operating force.

[0073] like Figure 9 As shown, in one embodiment of the present invention, a pair of assisting mechanisms 5 are provided, and the first rotating shafts 51 of the pair of assisting mechanisms 5 respectively pass through the first side plate 21 and the second side plate 23. That is, by means of bidirectional torsion springs, the hinge can provide assistance when opening and closing. Moreover, the two torsion springs arranged symmetrically on the left and right can keep the hinge operation balanced.

[0074] like Figure 3 As shown, in one embodiment of the present invention, the assist mechanism 5 further includes a torsion spring guide sleeve 53 and an elastic pin 54. The torsion spring guide sleeve 53 is sleeved on the outer periphery of the first rotating shaft 51, and a torsion spring 52 is provided on the outer periphery of the torsion spring guide sleeve 53. The torsion spring guide sleeve 53 can reduce the friction of the torsion spring 52 during operation and increase the service life of the torsion spring 52. The elastic pin 54 is provided at the end of the first rotating shaft 51, and the elastic pin 54 passes through the first rotating shaft 51 radially. During the installation of the torsion spring 52, the torsion spring 52 passes through the first rotating shaft 51 from the first end, and a limiting groove is provided at the second end. After the torsion spring 52 is completely sleeved on the first rotating shaft 51, the elastic pin 54 is installed.

[0075] In one embodiment of the present invention, the second limiting component 4 further includes a second rotating shaft 44, which is rotatably mounted on the first fixing member 1; a pair of limiting plates 41 are suspended on the second rotating shaft 44; and at least one end of the second rotating shaft 44 is provided with a crank handle. The above configuration makes it easier for the second limiting component 4 to rotate.

[0076] In summary, as Figure 1-5 As shown, the hinge involved in this invention includes a first fixing member 1, a second fixing member 2, a first limiting component 3, a second limiting component 4, and an assist mechanism 5. The first fixing member 1 can be mounted on the cover 100, and the second fixing member 2 can be mounted on the counterweight body 200. The relative opening and closing of the cover 100 and the counterweight body 200 can be achieved through the first fixing member 1 and the second fixing member 2.

[0077] The first limiting component 3 includes an inner limiting shaft and an outer limiting shaft, and the axes of the inner limiting shaft and the outer limiting shaft can be parallel to the rotation axes of the first fixing member 1 and the second fixing member 2.

[0078] The second limiting assembly 4 includes a limiting plate 41, a connecting shaft 42, an elastic element 43, and a second rotating shaft. A pair of limiting plates 41 are arranged opposite to each other, and each limiting plate 41 is rotatably connected to the first fixing member 1 at a rotation point; both ends of the connecting shaft 42 are respectively connected to the limiting plates 41; one end of the elastic element 43 is connected to the first fixing member 1 at a first connection point, and the other end of the elastic element 43 is connected to the side wall of the limiting plate 41 at a second connection point, and the rotation point and the second connection point are located on both sides of the first connection point. During the process of the hinge moving from the open to the closed state, the connecting shaft 42 can self-lock with the second fixing member.

[0079] The assist mechanism 5 includes a first rotating shaft 51 and a torsion spring 52. The first rotating shaft 51 passes through the first fixing member 1 and the second fixing member 2. The torsion spring 52 is sleeved on the first rotating shaft 51. The torsion spring 52 is a bidirectional torsion spring located on both sides of the first side plate 21. One end of the torsion spring 52 abuts against the inner limiting shaft, and the other end of the torsion spring 52 abuts against the outer limiting shaft.

[0080] like Figures 6-7 As shown, during the closing process of the hinge, the first fixing member 1 begins to rotate. When the outer limiting shaft on the first fixing member 1 contacts the outer torsion arm of the torsion spring 52, the torsion spring 52 begins to deform and provide a reaction force. When the hinge is fully closed, the torsion spring 52 provides opening assistance. When the hinge is used to open a heavy door or machine cover, it can reduce the operator's operating force.

[0081] like Figures 8-9 As shown, during the opening process of the hinge, the first fixing member 1 begins to rotate. When the inner limiting shaft on the first fixing member contacts the inner torsion arm of the torsion spring, the torsion spring 52 begins to deform and provide a reaction force. When the hinge is fully open, the torsion spring 52 provides closing assistance. When the hinge is used to close a heavy door or machine cover, it can reduce the operator's operating force.

[0082] like Figure 10-13 As shown, when the hinge is open, the second limiting component 4 is in the closed position. Under the action of the elastic element 43, the connecting shaft 42 is always in contact with the first fixing component 1. When the first fixing component 1 is opened to a certain angle, the connecting shaft 42 will contact the second fixing component 2. Because the force of the elastic element 43 never exceeds the first connection point during the movement of the second limiting component 4, the second limiting component 4 is always in contact with the second fixing component 2. When the first fixing component 1 continues to open to a certain angle, the connecting shaft 42 passes over the second fixing component 2 and continues to be in contact with the first fixing component 1 under the action of the elastic element 43 until the first limiting component 3 contacts the second fixing component 2. At this time, the first fixing component 1 reaches the maximum angle position.

[0083] like Figure 14As shown, when the hinge closes unexpectedly and not under subjective circumstances, the first fixing member 1 begins to rotate and close. When it rotates to a certain angle, the connecting shaft 42 contacts the second fixing member 2 under the pulling force of the elastic member 43, preventing the first fixing member 1 from continuing to rotate and close. At this time, it plays the role of limiting the hinge closure.

[0084] like Figure 15-17 As shown, when the hinge is in its fully open position, i.e., when the hinge is in the open state, the first fixing member 1 is always open at its maximum angle under the influence of the center of gravity of the machine cover. In this position, there is a gap between the connecting shaft 42 and the second fixing member 2. When it is necessary to close the hinge to close the machine cover, the second limiting component 4 needs to be manually pushed to the unlocked position. The force of the elastic member 43 exceeds the second rotating shaft 44 of the limiting plate 41. Under this force, the connecting shaft 42 is always in contact with the other side of the first fixing member 1, thus keeping the second limiting component 4 in the unlocked position without requiring the operator to continuously operate the second limiting component 4.

[0085] like Figure 18 As shown, when the first fixing member 1 continues to rotate and close, the connecting shaft 42 contacts the second fixing member 2. Under the reaction force of the contact, the second limiting component 4 will return to the initial closed position.

[0086] The working machinery provided by the present invention is described below. The working machinery described below can be referred to in correspondence with the hinge described above.

[0087] A second aspect of the present invention provides a working machine including the hinge described above.

[0088] The working machine provided by the present invention includes the hinge as described above, and uses the force of the tension spring to enable the second limiting component to automatically limit and unlock and maintain itself; in addition, it uses a bidirectional torsion spring to provide bidirectional opening and closing assistance.

[0089] In embodiments of the present invention, the type of working machinery is not a limitation; for example, the working machinery can be an excavator, crane, loader, etc. In other words, as long as the working machinery can use the hinge of the present invention, it is acceptable.

[0090] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0091] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention according to the specific circumstances.

[0092] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "method," "specific method," or "some methods," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or method is included in at least one embodiment or method of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or method. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or methods. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or methods described in this specification, as well as the features of different embodiments or methods.

[0093] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A hinge, characterized in that, include: First fastener; The second fixing member is rotatably connected to the first fixing member and is used to switch the hinge between the open and closed states. The first limiting component and the second limiting component are both disposed on the first fixing member; The first limiting component is used to limit the open state; During the process of transitioning from the open state to the closed state, before reaching the closed state, the second limiting component can self-lock with the second fixing member; The second limiting component includes: A pair of limiting plates are arranged opposite to each other, and each limiting plate is rotatably connected to the first fixing member at a rotation point; The connecting shaft has two ends that are respectively connected to the limiting plate; The elastic element has one end connected to the first fixing element at a first connection point, and the other end connected to the side wall of the limiting plate at a second connection point, with the rotation point and the second connection point located on both sides of the first connection point; During the process of transitioning from the open state to the closed state, before reaching the closed state, the connecting shaft can self-lock with the second fixing member; The second fastener includes an integrally connected first side plate, mounting plate, and second side plate. The edge of the second side plate is configured with a first bend, a second bend, a third bend, a fourth bend, and a fifth bend that are smoothly connected in sequence. The end of the second bend near the third bend protrudes towards the side near the connecting shaft, so that the connecting shaft can self-lock with the second bend during the process of moving from the open state to the closed state.

2. The hinge according to claim 1, characterized in that, The end of the fourth bend away from the third bend protrudes toward the side closer to the connecting shaft.

3. The hinge according to claim 2, characterized in that, It also includes support organizations, which include: A first rotating shaft passes through the first fixing member and the second fixing member; A torsion spring is sleeved on the first rotating shaft, and the torsion spring is located on both sides of the first side plate; One end of the torsion spring abuts against the inner side of the first limiting component, and the other end of the torsion spring abuts against the outer side of the first limiting component.

4. The hinge according to claim 3, characterized in that, Both the first side plate and the second side plate have slots at their bottoms for the torsion spring to pass through.

5. The hinge according to claim 3, characterized in that, The assist mechanism is provided in a pair, and the pair of first rotating shafts respectively pass through the first side plate and the second side plate.

6. The hinge according to claim 3, characterized in that, The assisting mechanisms also include: A torsion spring guide sleeve is sleeved on the outer periphery of the first rotating shaft, and the torsion spring is provided on the outer periphery of the torsion spring guide sleeve; An elastic pin is disposed at the end of the first rotating shaft, and the elastic pin passes through the first rotating shaft radially.

7. The hinge according to claim 1, characterized in that, The second limiting component also includes: The second rotating shaft is rotatably mounted on the first fixing member; a pair of limiting plates are suspended on the second rotating shaft; and at least one end of the second rotating shaft is provided with a crank handle.

8. A type of operating machinery, characterized in that, Includes the hinge as described in any one of claims 1 to 7.

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