A hinge locking structure

Abstract

This utility model provides a hinge locking structure, comprising: a connecting assembly including a base and a pin, the base being mounted on a fan body, and the pin being movably connected to the base to allow the pin to slide relative to the base; a first locking element and a second locking element being respectively provided at both ends of the pin; and a rocker arm assembly including a supporting rocker arm and a connecting rod, the supporting rocker arm having a third locking element and a fourth locking element along its length, the third locking element cooperating with the first locking element to form a locking structure, and the fourth locking element cooperating with the second locking element to form a locking structure. This utility model solves the technical problems of existing hinge locking structures in terms of sealing performance, production assembly efficiency, and cost control.

Description

Technical Field

[0001] This utility model relates to the field of door and window hinge technology, and more specifically to a hinge locking structure. Background Technology

[0002] Existing hinge locking structures have certain flaws in their locking design. Some structures achieve locking through only a single locking position, resulting in poor sealing performance between the fan body and the frame, failing to meet adequate sealing requirements. Furthermore, the connection method between the rocker arm assembly and the base is not optimal, leading to insufficient smooth movement of the rocker arm relative to the base. This makes assembly of components difficult and impacts production efficiency. These issues indicate that existing hinge locking structures still have room for improvement in terms of sealing performance and production efficiency, necessitating a superior structural design to address these problems. Utility Model Content

[0003] The purpose of this utility model is to overcome the defects of the prior art and provide a hinge locking structure, which aims to solve the technical problems of the existing hinge locking structure in terms of sealing performance, production and assembly efficiency and cost control.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A hinge locking structure, comprising:

[0006] A connecting assembly includes a base and a pin. The base is used to mount on a fan body, and the pin is movably connected to the base so that the pin slides relative to the base. A first locking element and a second locking element are respectively provided at both ends of the pin.

[0007] A rocker arm assembly includes a supporting rocker arm and a connecting rod. One end of the supporting rocker arm is connected to the base so that the base slides relative to the supporting rocker arm. One end of the connecting rod is hinged to the supporting rocker arm, and the other end is connected to the base so that the supporting rocker arm and the base can be hinged together for opening and closing. The supporting rocker arm is provided with a third locking element and a fourth locking element along its length. The third locking element cooperates with the first locking element to form a locking structure, and the fourth locking element cooperates with the second locking element to form a locking structure.

[0008] A hinge assembly for mounting on a frame and engaging with the support rocker arm for hinged opening and closing.

[0009] In one embodiment, the first locking element is disposed on the side of the pin near the supporting rocker arm, and the third and fourth locking elements are both disposed on the side of the supporting rocker arm near the pin.

[0010] In one embodiment, the first locking element is a first locking point, and the third locking element is a first locking part. The first locking part is provided with a first sliding groove, and the first locking point is slidably connected to the first sliding groove. When the connecting assembly and the rocker arm assembly are closed on the frame, the top end of the first locking point is located inside the first locking part.

[0011] In one embodiment, the second locking element is a second locking part, the second locking part is provided with a second sliding groove, the fourth locking element is a second locking point, the second locking point is slidably connected to the second sliding groove, and when the connecting assembly and the rocker arm assembly are closed on the frame, the top end of the second locking point is located inside the second locking part.

[0012] In one embodiment, the second locking element is a plug-in plate, and the fourth locking element is a third locking part. The third locking part is provided with a third sliding groove, and the plug-in plate is slidably connected to the third sliding groove. When the connecting assembly and the rocker arm assembly are closed on the frame, the plug-in plate is embedded in the third locking part.

[0013] In one embodiment, the extension direction of the plug plate is parallel to the extension direction of the base.

[0014] In one embodiment, the support rocker arm is provided with a mounting groove, and the third locking element is mounted on the mounting groove.

[0015] In one embodiment, the supporting rocker arm is bent upward at the end of the mounting groove away from the connecting assembly to form a support plate, and the other end of the support plate is bent outward along the length direction of the supporting rocker arm to form a rocker arm end plate, so that the supporting rocker arm is stepped; the fourth locking element is provided at the end of the rocker arm end plate away from the support plate.

[0016] In one embodiment, a fixing plate is provided on the upper surface of the base, one end of the fixing plate is fixedly connected to the pin through the first locking element, and a fourth sliding groove is provided on the upper surface of the base. The fixing plate is inserted into the fourth sliding groove, and the fixing plate drives the pin to slide relative to the base along the fourth sliding groove.

[0017] In one embodiment, the base has a sixth sliding groove along its length at the bottom, and a connecting shaft is provided in the sixth sliding groove. One end of the connecting shaft is embedded in the sixth sliding groove, and the other end is rotatably connected to one end of the supporting rocker arm.

[0018] The advantages of this invention compared to existing technologies are as follows: A dual locking effect is achieved through the cooperative arrangement of the connecting component and the rocker arm assembly. The first locking element of the pin cooperates with the third locking element of the supporting rocker arm, and the second locking element cooperates with the fourth locking element, forming two locking structures. This enhances the sealing performance during locking and reduces the problem of insufficient sealing caused by a single locking point. Simultaneously, the sliding connection between the pin and the base, and the hinged connection between the supporting rocker arm and the base via the connecting rod, ensure smooth operation of all components during opening and closing, simplifying the assembly process and improving production assembly efficiency.

[0019] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model, it can be implemented according to the contents of the specification. In order to make the above and other objects, features and advantages of this utility model more obvious and easy to understand, the following are preferred embodiments, which are described in detail below. Attached Figure Description

[0020] Figure 1 A schematic diagram of the overall structure of a hinge locking structure provided by this utility model;

[0021] Figure 2 A schematic diagram of the overall structure of a hinge locking structure in its closed state, provided by this utility model;

[0022] Figure 3 An exploded view of a hinge locking structure provided by this utility model;

[0023] Figure 4 A partial structural diagram of a hinge locking structure provided by this utility model;

[0024] Figure 5 A partial structural diagram of a hinge locking structure provided by this utility model;

[0025] Figure 6 A schematic diagram of the structure of a support rocker arm with a hinge locking structure provided by this utility model;

[0026] Figure 7 A schematic diagram of another embodiment of a hinge locking structure provided by this utility model;

[0027] Figure 8 This is a schematic diagram of the closed state of another embodiment of the hinge locking structure provided by this utility model.

[0028] Figure Labels

[0029] 1. Connecting assembly; 11. Base; 111. Fixing plate; 112. Sixth slide groove; 113. Connecting shaft; 114. Fourth slide groove; 12. Pin; 121. First locking element; 122. Second locking element; 1221. Second slide groove; 2. Rocker arm assembly; 21. Support rocker arm; 211. Third locking element; 2111. First slide groove; 212. Fourth locking element; 2121. Third slide groove; 213. Mounting groove; 214. Support plate; 215. Rocker arm end plate; 22. Connecting rod; 3. Hinge assembly. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0032] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0033] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0034] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0035] See Figures 1 to 8 As shown, this utility model embodiment discloses a hinge locking structure, including:

[0036] The connecting component 1 includes a base 11 and a pin 12. The base 11 is used to be mounted on the fan body, and the pin 12 is movably connected to the base 11 so that the pin 12 slides relative to the base 11. The two ends of the pin 12 are respectively provided with a first locking element 121 and a second locking element 122.

[0037] The rocker arm assembly 2 includes a supporting rocker arm 21 and a connecting rod 22. One end of the supporting rocker arm 21 is connected to the base 11 so that the base 11 slides relative to the supporting rocker arm 21. One end of the connecting rod 22 is hinged to the supporting rocker arm 21, and the other end is connected to the base 11 so that the supporting rocker arm 21 and the base 11 can be hinged to open and close. The supporting rocker arm 21 is provided with a third locking element 211 and a fourth locking element 212 along its length. The third locking element 211 cooperates with the first locking element 121 to form a locking structure, and the fourth locking element 212 cooperates with the second locking element 122 to form a locking structure.

[0038] The hinge assembly 3 is used to be installed on the frame and to cooperate with the support rocker arm 21 to open and close.

[0039] Specifically, a hinge locking structure in this embodiment includes a connecting component 1, a rocker arm assembly 2, and a hinge assembly 3. The connecting component 1 includes a base 11 and a pin 12. The base 11 is mounted on the fan body, and the pin 12 is movably connected to the base 11 and can slide relative to the base 11. The two ends of the pin 12 are respectively provided with a first locking element 121 and a second locking element 122. The rocker arm assembly 2 includes a supporting rocker arm 21 and a connecting rod 22. One end of the supporting rocker arm 21 is connected to the base 11 and can make the base 11 slide relative to the supporting rocker arm 21. The connecting rod 22 is located between the supporting rocker arm 21 and the base 11, with one end hinged to the supporting rocker arm 21 and the other end connected to the base 11 to realize the hinged opening and closing of the supporting rocker arm 21 and the base 11.

[0040] The supporting rocker arm 21 is provided with a third locking element 211 and a fourth locking element 212 along its length. The third locking element 211 cooperates with the first locking element 121 to form a locking structure, and the fourth locking element 212 cooperates with the second locking element 122 to form a locking structure. The hinge assembly 3 is installed on the frame and cooperates with the supporting rocker arm 21 to open and close. By cooperating with the two sets of locking elements of the connecting assembly 1 and the rocker arm assembly 2, double locking is achieved when the pin 12 slides, improving the airtightness between the fan frame. At the same time, the movable connection of each component reduces the assembly difficulty and manufacturing precision requirements, improves production efficiency and reduces costs. When the connecting assembly 1 and the rocker arm assembly 2 are closed, the pin 12 is driven to slide, causing the first locking element 121 to move and cooperate with the third locking element 211 to lock, and the second locking element 122 to move and cooperate with the fourth locking element 212 to lock, achieving double locking. The hinge assembly 3 cooperates with the supporting rocker arm 21 to achieve smooth opening and closing.

[0041] Furthermore, the support rocker arm 21 is provided with a mounting groove 213, and the third locking element 211 is installed in the mounting groove 213. Specifically, the mounting groove 213 can provide precise installation positioning for the third locking element 211, which facilitates quick determination of the position of the third locking element 211 during production assembly, reduces installation errors, ensures accurate cooperation between the third locking element 211 and the first locking element 121, and improves the stability of the third locking element 211 after installation. When assembling the support rocker arm 21, the third locking element 211 is installed in the mounting groove 213 and fixed. When the pin 12 slides to lock, the third locking element 211 installed in the mounting groove 213 can accurately cooperate with the first locking element 121 to ensure the locking effect.

[0042] Furthermore, the supporting rocker arm 21 is bent upward at the end of the mounting groove 213 away from the connecting assembly 1 to form a support plate 214, and the other end of the support plate 214 is bent outward along the length direction of the supporting rocker arm 21 to form a rocker arm end plate 215, so that the supporting rocker arm 21 is stepped; the fourth locking element 212 is provided at the end of the rocker arm end plate 215 away from the support plate 214.

[0043] Specifically, the support rocker arm 21 is bent upward at the end of the mounting groove 213 away from the connecting component 1 to form a support plate 214. The other end of the support plate 214 is bent outward along the length of the support rocker arm 21 to form a rocker arm end plate 215, so that the support rocker arm 21 is stepped. The fourth locking element 212 is located at the end of the rocker arm end plate 215 away from the support plate 214. The stepped structure can enhance the overall structural strength of the support rocker arm 21 and prevent deformation due to excessive force during opening and closing. At the same time, the setting of the rocker arm end plate 215 provides a suitable installation position for the fourth locking element 212, so that the fourth locking element 212 and the second locking element 122 cooperate more smoothly and avoid motion interference with other components.

[0044] When the supporting rocker arm 21 slides relative to the base 11, the stepped structure provides sufficient space for the movement of each component. The fourth locking element 212 on the rocker arm end plate 215 moves with the supporting rocker arm 21. When the pin 12 slides, the fourth locking element 212 can accurately cooperate with the second locking element 122 to achieve locking. In a more specific implementation, the support plate 214 and the rocker arm end plate 215 are made with the supporting rocker arm 21 using an integral molding process, thereby ensuring structural strength while forming a stepped structure.

[0045] Furthermore, the upper surface of the base 11 is provided with a fixing plate 111, one end of the fixing plate 111 is fixedly connected to the pin 12 through the first locking element 121, the upper surface of the base 11 is provided with a fourth sliding groove 114, the fixing plate 111 is inserted into the fourth sliding groove 114, and the fixing plate 111 drives the pin 12 to slide relative to the base 11 along the fourth sliding groove 114.

[0046] Specifically, a fixing plate 111 is provided on the upper surface of the base 11. One end of the fixing plate 111 is fixedly connected to the pin 12 via a first locking element 121. A fourth sliding groove 114 is provided on the upper surface of the base 11. The fixing plate 111 is inserted into the fourth sliding groove 114. The fixing plate 111 drives the pin 12 to slide relative to the base 11 along the fourth sliding groove 114. The fixing plate 111, inserted into the fourth sliding groove 114 of the base 11, provides a clear guide for the sliding of the fixing plate 111, ensuring that the fixing plate 111 drives the pin 12 to move in a predetermined direction, avoiding deviation during the sliding process. This ensures that the first locking element 121 and the second locking element 122 can accurately cooperate with the corresponding locking elements, improving the accuracy and reliability of locking. At the same time, this structure simplifies the cooperation relationship between components through the fixed connection between the fixing plate 111 and the pin 12 and the cooperation with the sliding groove of the base 11, which helps to reduce the assembly difficulty. When locking is required, the fixing plate 111 slides along the fourth sliding groove 114 on the upper surface of the base 11 under external force. Since one end of the fixing plate 111 is fixedly connected to the pin 12 through the first locking element 121, the sliding of the fixing plate 111 will drive the pin 12 to move synchronously, so that the pin 12 slides relative to the base 11 along with the fixing plate 111. This causes the first locking element 121 to move and cooperate with the third locking element 211, and the second locking element 122 to move and cooperate with the fourth locking element 212, ultimately achieving double locking and improving the airtightness between the fan frames.

[0047] Furthermore, the base 11 has a sixth sliding groove 112 along its length at the bottom, and a connecting shaft 113 is provided in the sixth sliding groove 112. One end of the connecting shaft 113 is embedded in the sixth sliding groove 112, and the other end is rotatably connected to one end of the supporting rocker arm 21.

[0048] Specifically, when the connecting component 1 moves in the closing direction, the base 11 rotates around the support rocker arm 21 based on the rotation direction of the connecting shaft 113. At the same time, the base 11 slides along the sixth slide groove 112 based on the connecting shaft 113, thereby adapting to the connection length of the transmission component.

[0049] In one embodiment, the first locking element 121 is disposed on the side of the pin 12 near the support rocker arm 21, and the third locking element 211 and the fourth locking element 212 are both disposed on the side of the support rocker arm 21 near the pin 12.

[0050] Specifically, the first locking element 121 is disposed on the side of the pin 12 near the supporting rocker arm 21, and the third locking element 211 and the fourth locking element 212 are both disposed on the side of the supporting rocker arm 21 near the pin 12. By disposing the first locking element 121 and the third locking element 211, and the second locking element 122 and the fourth locking element 212 on opposite surfaces, each locking element can directly engage with the pin 12 when it slides, reducing spatial interference during engagement, improving the accuracy and stability of locking, and thus enhancing the sealing effect. When locking is required, the pin 12 slides relative to the base 11. Since the first locking element 121, the third locking element 211, and the fourth locking element 212 are on opposite surfaces, each locking element can be accurately aligned during the sliding process, smoothly achieving the engagement and locking of the first locking element 121 and the third locking element 211, and the second locking element 122 and the fourth locking element 212.

[0051] Furthermore, the first locking element 121 is a first locking point, and the third locking element 211 is a first locking part. The first locking part is provided with a first sliding groove 2111, and the first locking point is slidably connected to the first sliding groove 2111. When the connecting assembly 1 and the rocker arm assembly 2 are closed on the frame, the top end of the first locking point is located inside the first locking part.

[0052] Specifically, the first locking element 121 is the first locking point, and the third locking element 211 is the first locking part. The first locking part is provided with a first sliding groove 2111, and the first locking point is slidably connected to the first sliding groove 2111. When the connecting assembly 1 and the rocker arm assembly 2 are closed on the frame, the top of the first locking point is located inside the first locking part. The first sliding groove 2111 provides sliding guidance for the first locking point, ensuring that when the pin 12 slides, the first locking point can move along a predetermined trajectory. The structure in which the top of the first locking point is located inside the first locking part enhances the stability after locking, reduces loosening, and improves sealing performance. When the connecting assembly 1 and the rocker arm assembly 2 are closed, they drive the pin 12 to slide. The first locking point slides along the first sliding groove 2111 of the first locking part with the pin 12 until the top of the first locking point is completely inserted into the first locking part, realizing the locking of the first locking element 121 and the third locking element 211. It can be understood that the first sliding groove 2111 is an open groove, which means a groove that is open at least one end.

[0053] Further, see Figures 1 to 6As shown, the second locking element 122 is the second locking part, and the second locking part is provided with a second sliding groove 1221. The fourth locking element 212 is the second locking point, and the second locking point is slidably connected to the second sliding groove 1221. When the connecting assembly 1 and the rocker arm assembly 2 are closed on the frame, the top end of the second locking point is located inside the second locking part.

[0054] Specifically, the second locking element 122 is a second locking part, which has a second sliding groove 1221. The fourth locking element 212 is a second locking point, which is slidably connected to the second sliding groove 1221. When the connecting assembly 1 and the rocker arm assembly 2 are closed on the frame, the top of the second locking point is located inside the second locking part. The cooperation between the second sliding groove 1221 and the second locking point provides another guide for the sliding of the pin 12, forming a double lock with the cooperation of the first locking element 121 and the third locking element 211, further improving the reliability of the lock and the airtightness between the fan and the frame. When the pin 12 is slid, the second locking point slides along the second sliding groove 1221 of the second locking part with the movement of the supporting rocker arm 21. When the connecting assembly 1 and the rocker arm assembly 2 are fully closed, the top of the second locking point enters the second locking part, achieving double locking together with the locking structure of the first locking point and the first locking part. It can be understood that the second sliding groove 1221 is an open groove, which means a groove that is open at least one end.

[0055] See Figures 7 to 8 The diagram shows a structural schematic of another specific embodiment of the hinge locking structure of this utility model. In this embodiment, the second locking element 122 is a plug-in plate, the fourth locking element 212 is a third locking part, the third locking part is provided with a third sliding groove 2121, the plug-in plate is slidably connected to the third sliding groove 2121, and when the connecting assembly 1 and the rocker arm assembly 2 are closed on the frame, the plug-in plate is embedded in the third locking part.

[0056] Specifically, the second locking element 122 is a plug-in plate, and the fourth locking element 212 is a third locking part. The third locking part is provided with a third sliding groove 2121, and the plug-in plate is slidably connected to the third sliding groove 2121. When the connecting assembly 1 and the rocker arm assembly 2 are closed on the frame, the plug-in plate is embedded in the third locking part. The sliding fit between the plug-in plate and the third sliding groove 2121 can provide stable guidance when the pin 12 slides, and the structure of the plug-in plate embedded in the third locking part can increase the locking contact area, enhance the tightness of the lock, and improve the airtightness between the fan frame. When the connecting assembly 1 and the rocker arm assembly 2 are closed, the pin 12 is driven to slide, and the plug-in plate slides along the third sliding groove 2121 of the third locking part with the pin 12 until the plug-in plate is completely embedded in the third locking part, realizing the locking of the second locking element 122 and the fourth locking element 212. It is understandable that the third groove 2121 is an open groove, which means a groove that is open at least one end.

[0057] Furthermore, the extension direction of the plug plate is parallel to the extension direction of the base 11.

[0058] Specifically, in this embodiment, the plug plate is a flat plate. When the pin 12 is moved, the plug plate enters the third slide groove 2121 in parallel and locks, which is convenient and quick.

[0059] In summary, the hinge locking structure of this utility model achieves double locking through the cooperation of the connecting component 1 and the rocker arm component 2. The first locking element 121 of the pin 12 and the third locking element 211, the second locking element 122 and the fourth locking element 212 of the supporting rocker arm 21 respectively form a locking structure, achieving double locking point locking when the pin 12 slides, significantly improving the airtightness between the fan frame and effectively solving the problem of insufficient sealing. The base 11 and the supporting rocker arm 21 are connected by the sixth sliding groove 112 and the connecting shaft 113, guided by the insertion of the fixing plate 111 and the fourth sliding groove 114 of the base 11, and the coordinated movement of the multi-link in the hinge component 3, ensuring smooth cooperation of each component during opening and closing, reducing motion interference, ensuring precise alignment of the locking elements, simplifying the production assembly process, and improving assembly efficiency. The stepped structure of the supporting rocker arm 21 enhances the overall strength, and the setting of the mounting groove 213 improves the installation accuracy of the locking elements. The overall structure is reasonably designed and has a wide range of applications. While improving sealing performance, it also optimizes the user experience and balances performance improvement with cost control.

[0060] The above examples are merely illustrative of the technical content of this utility model to facilitate reader understanding, but do not imply that the implementation of this utility model is limited to these embodiments. Any technical extensions or re-creations made based on this utility model are protected by this utility model. The scope of protection of this utility model is defined by the claims.

Claims

1. A hinge locking structure, characterized in that, include: A connecting assembly includes a base and a pin. The base is used to mount on a fan body, and the pin is movably connected to the base so that the pin slides relative to the base. A first locking element and a second locking element are respectively provided at both ends of the pin. A rocker arm assembly includes a supporting rocker arm and a connecting rod. One end of the supporting rocker arm is connected to the base so that the base slides relative to the supporting rocker arm. One end of the connecting rod is hinged to the supporting rocker arm, and the other end is connected to the base so that the supporting rocker arm and the base can be hinged together for opening and closing. The supporting rocker arm is provided with a third locking element and a fourth locking element along its length. The third locking element cooperates with the first locking element to form a locking structure, and the fourth locking element cooperates with the second locking element to form a locking structure. A hinge assembly for mounting on a frame and engaging with the support rocker arm for hinged opening and closing.

2. The hinge locking structure according to claim 1, characterized in that, The first locking element is disposed on the side of the pin near the supporting rocker arm, and the third and fourth locking elements are both disposed on the side of the supporting rocker arm near the pin.

3. The hinge locking structure according to claim 2, characterized in that, The first locking element is a first locking point, and the third locking element is a first locking part. The first locking part is provided with a first sliding groove, and the first locking point is slidably connected to the first sliding groove. When the connecting assembly and the rocker arm assembly are closed on the frame, the top end of the first locking point is located inside the first locking part.

4. The hinge locking structure according to claim 3, characterized in that, The second locking element is a second locking part, and the second locking part is provided with a second sliding groove. The fourth locking element is a second locking point, and the second locking point is slidably connected to the second sliding groove. When the connecting assembly and the rocker arm assembly are closed on the frame, the top end of the second locking point is located inside the second locking part.

5. A hinge locking structure according to claim 3, characterized in that, The second locking element is a plug-in plate, and the fourth locking element is a third locking part. The third locking part is provided with a third sliding groove, and the plug-in plate is slidably connected to the third sliding groove. When the connecting assembly and the rocker arm assembly are closed on the frame, the plug-in plate is embedded in the third locking part.

6. A hinge locking structure according to claim 5, characterized in that, The extension direction of the plug plate is parallel to the extension direction of the base.

7. The hinge locking structure according to claim 1, characterized in that, The support rocker arm is provided with a mounting groove, and the third locking element is installed on the mounting groove.

8. A hinge locking structure according to claim 7, characterized in that, The supporting rocker arm is bent upward at the end of the mounting groove away from the connecting assembly to form a support plate, and the other end of the support plate is bent outward along the length direction of the supporting rocker arm to form a rocker arm end plate, so that the supporting rocker arm is stepped; the fourth locking element is provided at the end of the rocker arm end plate away from the support plate.

9. A hinge locking structure according to claim 1, characterized in that, The upper surface of the base is provided with a fixing plate. One end of the fixing plate is fixedly connected to the pin through the first locking element. The upper surface of the base is provided with a fourth sliding groove. The fixing plate is inserted into the fourth sliding groove. The fixing plate drives the pin to slide relative to the base along the fourth sliding groove.

10. A hinge locking structure according to claim 1, characterized in that, The base has a sixth sliding groove along its length at the bottom. A connecting shaft is provided in the sixth sliding groove. One end of the connecting shaft is embedded in the sixth sliding groove, and the other end is rotatably connected to one end of the supporting rocker arm.

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