Hinge structure and packaging box
By using the combination of arc-shaped projections and limiting grooves in the hinge structure, the problem of easy shaking and impact of the box lid of the hinge-type packaging box is solved, and stable closing and opening position limitation is achieved, reducing production costs.
Patent Information
- Application Number
- CN202422061471.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-23
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-08-23
AI Technical Summary
The existing hinged packaging box is prone to shaking or impacting the box body after opening, and the lock design increases production cost and difficulty in closing.
The hinge structure without locks is adopted, and the stable closing and opening position of the box cover is achieved by providing arc-shaped projections and limiting slots in the clamp slot on the rotating shaft.
The box cover can be kept stable and closed without a lock, reducing production costs, avoiding the box cover shaking or impacting the box body, and improving the reliability of use.
Smart Images
Figure CN223174700U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of packaging boxes, in particular to a hinge structure and a packaging box. Background Art
[0002] A hinge-type packaging box is a container that connects the box body and the box cover through a hinge to realize the opening and closing of the box body for packaging or taking out items. At present, most hinges of hinge-type packaging boxes on the market are composed of a rotating shaft fixed on the box body and a rotating part sleeved on the rotating shaft and fixedly connected to the box cover. A corresponding lock is often set at the free end of the box cover to prevent the closed box cover from opening by itself under external impact. For packaging boxes with special shape design requirements, the lock needs to be designed inside, which not only increases the difficulty of closing the packaging box but also raises the production cost of the packaging box. In addition, after such a hinge-type packaging box is opened, the position of the box cover is not easy to fix, and the box cover will rotate relative to the box body until the box cover fits against the side of the box body. During the opening process, it is easy to occur that the box cover impacts the box body because the operator does not hold the box cover firmly, resulting in damage to the box cover or the box body. Summary of the Utility Model
[0003] Based on this, in view of the above deficiencies, it is necessary to provide a hinge structure and a packaging box that can close the box cover without setting a lock and can fix the position of the box cover after it is opened to avoid impacting the box body.
[0004] A hinge structure for connecting the box cover and the box body of a packaging box, comprising a first connecting plate and a second connecting plate rotatably connected to the first connecting plate.
[0005] The first connecting plate includes a first plate body for fixedly connecting to one of the box body and the box cover, two lugs oppositely arranged on the first plate body, and a rotating shaft located between the two lugs and fixedly connected to the two lugs respectively. There is a preset distance between the rotating shaft and the first plate body to form a rotation avoidance space, and the circumferential surface of the rotating shaft has a first rotation position and at least one second rotation position.
[0006] The second connecting plate includes a second plate body for fixedly connecting to the other of the box body and the box cover. A slot extending along the length direction of the rotating shaft and used for installing the rotating shaft is opened on the second plate body near the rotating shaft, and the outer surface of the slot is an arc surface.
[0007] An arc-shaped protrusion extending along the length direction of the rotating shaft is provided on the rotating shaft, and a limiting groove extending along the length direction of the rotating shaft is provided on the inner surface of the slot. Both M and N are positive integers, and at least one of M and N is greater than or equal to two. When M is greater than one, a plurality of the arc-shaped protrusions are arranged in parallel at intervals on the circumferential surface of the rotating shaft. When N is greater than one, a plurality of the limiting grooves are arranged in parallel at intervals on the inner surface of the slot.
[0008] When the second connecting plate rotates to the first rotation position of the rotating shaft, at least one of the arc-shaped protrusions at M is embedded in the corresponding limiting groove, and the box cover and the box body are closed; when the second connecting plate rotates to the second rotation position of the rotating shaft, at least one of the arc-shaped protrusions at M is embedded in the corresponding limiting groove, and the box cover is opened.
[0009] In one embodiment, there is one arc-shaped protrusion provided on the rotating shaft, and two or more limiting grooves are arranged at intervals and in parallel on the inner surface of the card slot.
[0010] In one embodiment, there is one limiting groove provided on the inner surface of the card slot, and two or more arc-shaped protrusions are arranged at intervals and in parallel on the circumferential side surface of the rotating shaft.
[0011] In one embodiment, two or more arc-shaped protrusions are arranged at intervals and in parallel on the circumferential side surface of the rotating shaft, and two or more limiting grooves are arranged at intervals and in parallel on the inner surface of the card slot.
[0012] In one embodiment, the first connecting plate further includes a partition plate received in the rotation avoidance space and fixedly connected to the rotating shaft and the first plate body respectively. The partition plate divides the rotation avoidance space into a first rotation insertion area and a second rotation insertion area; a avoidance notch is formed at one side of the card slot corresponding to the partition plate, and the avoidance notch penetrates through the side wall of the card slot and communicates with the inner cavity of the card slot. The avoidance notch divides one side wall of the card slot into a first insertion part and a second insertion part which are arranged at intervals and respectively inserted into the first rotation insertion area and the second rotation insertion area in a one-to-one correspondence; a limiting abutting part is formed on the other side wall of the card slot corresponding to the avoidance notch.
[0013] In one embodiment, an arc-shaped reinforcing part is provided at the connection part of the lug and the rotating shaft.
[0014] In one embodiment, the first plate body is fixedly connected to the box body or the box cover by screws, and the second plate body is fixedly connected to the box body or the box cover by screws.
[0015] In one embodiment, at least one first elastic positioning post for embedding into the card hole on the box body or the box cover is provided at the part of the first plate body cooperating with the box body or the box cover; at least one second elastic positioning post for embedding into the card hole on the box body or the box cover is provided at the part of the second plate body cooperating with the box body or the box cover.
[0016] In one embodiment, a first through hole is formed in the first plate body. The first elastic positioning post includes a first elastic sheet and a first limiting post. One end of the first elastic sheet is fixedly connected to the inner surface of the first through hole, and the first limiting post is fixedly connected to the other end of the first elastic sheet and extends in a direction away from the inner cavity of the first through hole. A second through hole is formed in the second plate body. The second elastic positioning post includes a second elastic sheet and a second limiting post. One end of the second elastic sheet is fixedly connected to the inner surface of the second through hole, and the second limiting post is fixedly connected to the other end of the second elastic sheet and extends in a direction away from the inner cavity of the second through hole.
[0017] The present utility model also discloses a packaging box, which includes the above hinge structure, and the packaging box further includes a box body and a box cover that are hinge-connected through the hinge structure.
[0018] When implementing the hinge structure and the packaging box of the present utility model, by providing an arc-shaped protrusion on the rotating shaft of the first connecting plate and a limiting groove in the clamping groove of the second connecting plate, when the second connecting plate rotates to the first rotation position of the rotating shaft, the box cover and the box body are closed, and at least one arc-shaped protrusion is correspondingly engaged with the limiting groove to realize the limitation of the box cover and the box body, so as to prevent the box cover from shaking or even opening under external impact, and realize the protection of the items in the box. It can ensure the stability of the box cover after closing without setting a corresponding locking structure, reduce the closing difficulty of the packaging box, and its structure is simple. While canceling the locking structure, it reduces the production cost of the packaging box; when the second connecting plate rotates to the second rotation position of the rotating shaft, the box cover is opened, and at least one arc-shaped protrusion is correspondingly engaged with the limiting groove to realize the position limitation of the opened box cover, and it can prevent the box cover from rotating under its own gravity and then impacting the box body, so as to reduce the damage to the box cover and the box body. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 is a schematic structural diagram of the hinge structure in one state in an embodiment of the present utility model;
[0020] Figure 2 is Figure 1 a cross-sectional view of the hinge structure in the shown embodiment;
[0021] Figure 3 is a schematic structural diagram of the hinge structure in another state in an embodiment of the present utility model;
[0022] Figure 4 is Figure 3 a cross-sectional view of the hinge structure in the shown embodiment;
[0023] Figure 5 is an exploded view of the hinge structure in an embodiment of the present utility model;
[0024] Figure 6Structural schematic diagram of the first connecting plate in an embodiment of the present utility model;
[0025] Figure 7 Structural schematic diagram of the second connecting plate in an embodiment of the present utility model;
[0026] Figure 8 Exploded view of the packaging box in an embodiment of the present utility model. Detailed implementation manners
[0027] To make the above objects, features, and advantages of the present utility model more obvious and understandable, the following detailed description of the specific implementation manners of the present utility model is provided in conjunction with the accompanying drawings. Many specific details are set forth in the following description to fully understand the present utility model. However, the present utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.
[0028] Please refer to Figure 1 , the present utility model discloses a hinge structure 100 that can close the lid tightly without setting a lock and the position of the lid is fixed after opening to avoid hitting the box body. The hinge structure 100 is used to connect the lid and the box body of the packaging box. The hinge structure 100 includes a first connecting plate 110 and a second connecting plate 120 rotatably connected to the first connecting plate 110. When the hinge structure 100 connects the lid and the box body of the packaging box, the first connecting plate 110 of the hinge structure 100 can be connected to the box body of the packaging box, and the second connecting plate 120 of the hinge structure 100 can be connected to the lid of the packaging box; or the first connecting plate 110 of the hinge structure 100 can be connected to the lid of the packaging box, and the second connecting plate 120 of the hinge structure 100 can be connected to the box body of the packaging box.
[0029] Please further refer to Figure 1-7, the first connecting plate 110 includes a first plate body 111 for fixedly connecting to one of the box body and the box cover, two lugs 112 oppositely arranged on the first plate body 111, and a rotating shaft 113 located between the two lugs 112 and fixedly connected to the two lugs 112 respectively. There is a preset distance between the rotating shaft 113 and the first plate body 111 to form a rotation avoidance space, and the circumferential surface of the rotating shaft 113 has a first rotation position and at least one second rotation position. The second connecting plate 120 includes a second plate body 121 for fixedly connecting to the other of the box body and the box cover. A card slot 122 extending along the length direction of the rotating shaft 113 and used for fitting the rotating shaft 113 is formed at a position adjacent to the rotating shaft 113 on the second plate body 121, and the outer surface of the card slot 122 is an arc surface. It can also be understood that a circular tube extending along the length direction of the rotating shaft 113 is provided on one end face of the second plate body 121 adjacent to the first plate body 111. The outer side surface of the circular tube is fixedly connected to the second plate body 121, and an opening penetrating the inner cavity of the circular tube is formed on one side of the circular tube facing away from the second plate body 121. The opening and the inner cavity of the circular tube together form the card slot 122. By defining the outer surface of the card slot 122 as an arc surface, it can be avoided that during the relative rotation of the first connecting plate 110 and the second connecting plate 120, the outer surface of the card slot 122 interferes with the inner surface of the rotation avoidance space, so as to reduce the difficulty of relative rotation between the first connecting plate 110 and the second connecting plate 120.
[0030] There are M arc-shaped protrusions 114 extending along the length direction of the rotating shaft 113 on the rotating shaft 113, and N limiting grooves 123 extending along the length direction of the rotating shaft 113 are provided on the inner surface of the card slot 122. Both M and N are positive integers, and at least one of M and N is greater than or equal to two. When M is greater than one, multiple arc-shaped protrusions 114 are arranged at intervals and in parallel on the circumferential surface of the rotating shaft 113. When N is greater than one, multiple limiting grooves 123 are arranged at intervals and in parallel on the inner surface of the card slot 122, so that during the relative rotation of the first connecting plate 110 and the second connecting plate 120, the arc-shaped protrusions 114 can rotate to be in concave-convex fit with the preset limiting grooves 123 to achieve limiting. When the second connecting plate 120 rotates to the first rotation position of the rotating shaft 113, at least one of the M arc-shaped protrusions 114 is embedded in the corresponding limiting groove 123, and the box cover and the box body are closed; when the second connecting plate 120 rotates to the second rotation position of the rotating shaft 113, at least one of the M arc-shaped protrusions 114 is embedded in the corresponding limiting groove 123, and the box cover is opened. In this way, when the second connecting plate 120 rotates to the first rotation position and the second rotation position of the rotating shaft 113, there are arc-shaped protrusions 114 engaged with the corresponding limiting grooves 123, realizing the position limitation of the second connecting plate 120 relative to the first connecting plate 110 when rotating to the first rotation position and the second rotation position, avoiding the box cover from shaking or rotating due to external impact when rotating to the first rotation position and the second rotation position, and ensuring the reliability of the opening and closing of the packaging box and the stability of the structure.
[0031] In this embodiment, at least one second rotation position is provided on the rotating shaft 113. When the number of second rotation positions is greater than one, by configuring a corresponding number of arc-shaped protrusions 114 on the rotating shaft 113 and a corresponding number of limiting grooves 123 in the clamping groove 122, the position limitation of the box cover at multiple different opening and closing angles can be realized to meet the positioning requirements of the user for the box cover at different opening and closing angles. In addition, in this embodiment, the first connecting plate 110 is entirely made of a rigid plastic material, and the second connecting plate 120 is entirely made of a rigid plastic material, such as made of PVC or PC or PE or PMMA material. Each component on the first connecting plate 110 is made of the same plastic material and integrally formed by an injection molding method, and each component on the second connecting plate 120 is made of the same plastic material and integrally formed by an injection molding method. On the one hand, it can reduce the processing difficulty of the first connecting plate 110 and the second connecting plate 120 and improve the production efficiency of the hinge structure 100. On the other hand, it can avoid the rust problem of the hinge structure 100 caused by processing with metal materials, extend the service life of the hinge structure 100, and the use of a single plastic material is conducive to recycling the discarded hinge structure 100 and reducing material waste. In addition, in this embodiment, a plurality of weight-reducing holes are respectively formed on the first plate body and the second plate body to reduce the weight of the entire hinge structure.
[0032] In one embodiment, there is one arc-shaped protrusion 114 provided on the rotating shaft 113, and two or more limiting grooves 123 are arranged at intervals and in parallel on the inner surface of the clamping groove 122. Preferably, in this embodiment, there is one arc-shaped protrusion 114 provided on the rotating shaft 113, and two limiting grooves 123 are arranged at intervals on the inner surface of the clamping groove 122. In this case, there is only one second rotation position provided on the rotating shaft 113. When the second connecting plate 120 rotates to the first rotation position of the rotating shaft 113, the arc-shaped protrusion 114 on the rotating shaft 113 is in concave-convex fit with one of the limiting grooves 123 in the clamping groove 122 to close the packaging box; when the second connecting plate 120 rotates to the second rotation position of the rotating shaft 113, the arc-shaped protrusion 114 on the rotating shaft 113 is in concave-convex fit with the other limiting groove 123 in the clamping groove 122 to open the packaging box. Of course, according to different needs of users, two or more limiting grooves 123 can also be arranged at intervals on the inner surface of the clamping groove 122 so that the box cover can be fixed at multiple opening and closing angles when opened.
[0033] In another embodiment, a limiting groove 123 is provided on the inner surface of the card slot 122, and two or more arc-shaped protrusions 114 are arranged at intervals and in parallel on the circumferential side surface of the rotating shaft 113. During the relative rotation of the first connecting plate 110 and the second connecting plate 120, the arc-shaped protrusions 114 at different positions on the rotating shaft 113 are sequentially matched with the limiting grooves 123 in the card slot 122, so as to realize the position limitation of the lid at different opening and closing angles. In yet another embodiment, two or more arc-shaped protrusions 114 are arranged at intervals and in parallel on the circumferential side surface of the rotating shaft 113, and two or more limiting grooves 123 are arranged at intervals and in parallel on the inner surface of the card slot 122. In this embodiment, by arranging a plurality of arc-shaped protrusions 114 on the rotating shaft 113 and a plurality of limiting grooves 123 in the card slot 122, while realizing the positioning of the lid at different opening and closing angles, the matching area of the rotational limit between the first connecting plate 110 and the second connecting plate 120 is increased, thereby improving the stability and reliability of the positioning of the lid at different opening and closing angles.
[0034] In one embodiment, the first connecting plate 110 further includes a partition plate 115 received in the rotation avoidance space and fixedly connected to the rotating shaft 113 and the first plate body 111 respectively. The partition plate 115 divides the rotation avoidance space into a first rotation insertion area 116 and a second rotation insertion area 117; a avoidance notch 124 penetrating the side wall of the card slot 122 and communicating with the inner cavity of the card slot 122 is provided on one side of the card slot 122 corresponding to the partition plate 115. The avoidance notch 124 divides one side wall of the card slot 122 into a first insertion part 125 and a second insertion part 126 which are arranged at intervals and inserted into the first rotation insertion area 116 and the second rotation insertion area 117 respectively in a one-to-one correspondence; a limiting abutting part 127 is formed on the other side wall of the card slot 122 corresponding to the avoidance notch 124. By arranging a partition plate 115 in the rotation avoidance space and providing an avoidance notch 124 on one side of the card slot 122, so that a limiting abutting part 127 is formed on the other side of the card slot 122. When the first connecting plate 110 and the second connecting plate 120 rotate relative to each other to a preset angle, the limiting abutting part 127 abuts against the partition plate 115 to limit the further rotation of the first connecting plate 110 and the second connecting plate 120, thereby limiting the maximum rotation angle between the first connecting plate 110 and the second connecting plate 120.
[0035] Further, in this embodiment, an arc-shaped reinforcing portion 118 is provided at the connecting portion of the lug 112 and the rotating shaft 113. By providing the arc-shaped reinforcing portion 118, on the one hand, the width of the connecting portion of the lug 112 and the rotating shaft 113 is increased, so that when the thickness of the first connecting plate 110 is small, the installation of the rotating shaft 113 on the lug 112 can still be satisfied; on the other hand, the setting of the arc-shaped reinforcing portion 118 improves the mechanical strength of the connecting portion of the lug 112 and the rotating shaft 113, avoiding the problem that the connecting portion of the lug 112 and the rotating shaft 113 breaks due to excessive force from the first connecting plate 110, so as to extend the service life of the hinge structure 100.
[0036] In one embodiment, the first plate body 111 is fixedly connected to the box body or the box cover by screws, and the second plate body 121 is fixedly connected to the box body or the box cover by screws. In another embodiment, the first plate body 111 is fixedly connected to the box body or the box cover by rivets, and the second plate body 121 is fixedly connected to the box body or the box cover by rivets. In still another embodiment, at least one first elastic positioning post 119 for embedding into the card holes on the box body or the box cover is provided at the portion of the first plate body 111 that cooperates with the box body or the box cover; at least one second elastic positioning post 128 for embedding into the card holes on the box body or the box cover is provided at the portion of the second plate body 121 that cooperates with the box body or the box cover. Further preferably, a first through hole 1111 is formed on the first plate body 111, the first elastic positioning post 119 includes a first elastic piece 1191 and a first limiting post 1192, one end of the first elastic piece 1191 is fixedly connected to the inner surface of the first through hole 1111, and the first limiting post 1192 is fixedly connected to the other end of the first elastic piece 1191 and extends in a direction away from the inner cavity of the first through hole 1111; a second through hole 1211 is formed on the second plate body 121, the second elastic positioning post 128 includes a second elastic piece 1281 and a second limiting post 1282, one end of the second elastic piece 1281 is fixedly connected to the inner surface of the second through hole 1211, and the second limiting post 1282 is fixedly connected to the other end of the second elastic piece 1281 and extends in a direction away from the inner cavity of the second through hole 1211. Thus, during the installation process of the first connecting plate 110, by the extrusion of the first limiting post 1192 by the surface of the box body or the box cover, the first elastic piece 1191 generates elastic deformation, and the first limiting post 1192 is pushed into the first through hole 1111. When the first connecting plate 110 slides relative to the box cover or the box body until the first limiting post 1192 is aligned with the corresponding card hole, the extrusion force on the first limiting post 1192 is released, and the first elastic piece 1191 immediately restores elastic deformation and pushes the first limiting post 1192 into the card hole, realizing the relative position fixation of the first connecting plate 110 and the box body or the box cover. Similarly, the installation method of the second connecting plate 120 on the box cover or the box body is the same as that of the first connecting plate 110 on the box cover or the box body. For the specific installation process of the first connecting plate 110 on the box cover or the box body, reference can be made to the foregoing, and details are not described herein again.
[0037] In combination with Figure 1-8 , the present utility model also discloses a packaging box 10, which includes the above hinge structure 100. The packaging box 10 further includes a box body 200 and a box cover 300 that are hinge-connected through the hinge structure 100. It should be noted that when the hinge structure 100 is connected to the box body 200 and the box cover 300, with the first connecting plate 110 fixed to the box body 200 and the second connecting plate 120 fixed to the box cover 300, the first connecting plate 110 can be fixed either on the inner surface or the outer surface of the box body 200. Of course, a first slot can also be provided at the upper edge of the opening at the top of the box body 200, and the first plate body 111 of the first connecting plate 110 can be inserted into this first slot; the second connecting plate 120 can be fixed either on the inner surface or the outer surface of the box cover 300. Of course, a second slot can also be provided at the edge of the opening at the bottom of the box cover 300, and the second plate body 121 of the second connecting plate 120 can be inserted into this second slot. Conversely, when the first connecting plate 110 is fixed to the box cover 300 and the second connecting plate 120 is fixed to the box body 200, the first connecting plate 110 can be fixed either on the inner surface or the outer surface of the box cover 300, or can also be inserted into the corresponding slot on the box cover 300; the second connecting plate 120 can be fixed either on the inner surface or the outer surface of the box body 200, or can also be inserted into the corresponding slot on the box body 200.
[0038] When the first connecting plate 110 and the second connecting plate 120 are simultaneously and correspondingly arranged on the outer surface of the box cover 300 and the outer surface of the box body 200, or simultaneously and correspondingly arranged on the inner surface of the box cover 300 and the inner surface of the box body 200, and when the first plate body 111 and the second plate body 121 are in the same plane, the box cover 300 and the box body 200 are closed; when one of the first connecting plate 110 and the second connecting plate 120 is fixed on the inner surface of the box body 200 and the other is fixed on the outer surface of the box cover 300, or one of the first connecting plate 110 and the second connecting plate 120 is fixed on the outer surface of the box body 200 and the other is fixed on the inner surface of the box cover 300, when the first plate body 111 and the second plate body 121 are perpendicular, the box cover 300 and the box body 200 are closed. Preferably, in this embodiment, the first connecting plate 110 is fixed on the outer surface of the box body 200, the second connecting plate 120 is fixed on the outer surface of the box cover 300, and the outer surface of the box body 200 is provided with a first installation groove 210 having a C-shaped cross-section. A first insertion hole 220 communicating with the inner cavity of the box body 200 and corresponding to the first elastic positioning post 119 is formed in the first installation groove 210; the outer surface of the box cover 300 is provided with a second installation groove 310 having a C-shaped cross-section. A second insertion hole 320 communicating with the inner cavity of the box cover 300 and corresponding to the second elastic positioning post 128 is formed in the second installation groove 310. Thus, in the case where the first connecting plate 110 and the second connecting plate 120 are rotatably connected, the first plate body 111 is inserted into the first installation groove 210, and the first elastic positioning post 119 is embedded in the first insertion hole 220. The second plate body 121 is inserted into the second installation groove 310, and the second elastic positioning post 128 is embedded in the second insertion hole 320, thereby realizing the connection of the hinge structure 100 with the box body 200 and the box cover 300, and further realizing the hinge connection between the box body 200 and the box cover 300.
[0039] Implement the hinge structure 100 and the packaging box 10 of the present utility model. By providing an arc-shaped protrusion 114 on the rotating shaft 113 of the first connecting plate 110 and a limiting groove 123 in the card slot 122 of the second connecting plate 120, when the second connecting plate 120 rotates to the first rotation position of the rotating shaft 113, the box cover 300 and the box body 200 are closed, and at least one arc-shaped protrusion 114 is correspondingly engaged with the limiting groove 123 to realize the limitation of the box cover 300 and the box body 200, so as to prevent the box cover 300 from shaking or even opening under external impact, and realize the protection of the items in the box. It can ensure the stability of the box cover 300 after closing without setting a corresponding locking structure, reduce the closing difficulty of the packaging box 10, and its structure is simple. While canceling the locking structure, it reduces the production cost of the packaging box 10; when the second connecting plate 120 rotates to the second rotation position of the rotating shaft 113, the box cover 300 is opened, and at least one arc-shaped protrusion 114 is correspondingly engaged with the limiting groove 123 to realize the position limitation of the opened box cover 300, and it can prevent the impact on the box body 200 caused by the rotation of the box cover 300 under its own gravity, so as to reduce the damage to the box cover 300 and the box body 200.
[0040] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.
[0041] The above-described embodiments only represent several implementation manners of the present utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the utility model patent shall be subject to the appended claims.
Claims
1. A hinge structure for connecting the lid and the body of a packaging box, comprising a first connecting plate and a second connecting plate rotatably connected to the first connecting plate, characterized in that the first connecting plate includes a first plate body for fixedly connecting to one of the body and the lid of the box, two lugs oppositely arranged on the first plate body, and a rotating shaft located between the two lugs and fixedly connected to the two lugs respectively. There is a preset distance between the rotating shaft and the first plate body to form a rotation avoidance space, and the circumferential side surface of the rotating shaft has a first rotation position and at least one second rotation position; the second connecting plate includes a second plate body for fixedly connecting to the other of the body and the lid of the box. A card slot extending along the length direction of the rotating shaft and for fitting the rotating shaft is formed near the rotating shaft on the second plate body, and the outer surface of the card slot is an arc surface; The rotating shaft is provided with M arc-shaped protrusions extending along the length direction of the rotating shaft, and the inner surface of the card slot is provided with N limiting grooves extending along the length direction of the rotating shaft. Both M and N are positive integers, and at least one of M and N is greater than or equal to two; when M is greater than one, the multiple arc-shaped protrusions are arranged at intervals and in parallel on the circumferential side surface of the rotating shaft, and when N is greater than one, the multiple limiting grooves are arranged at intervals and in parallel on the inner surface of the card slot; When the second connecting plate rotates to the first rotation position of the rotating shaft, at least one of the M arc-shaped protrusions is embedded in the corresponding limiting groove, and the lid and the body of the box are closed; When the second connecting plate rotates to the second rotation position of the rotating shaft, at least one of the M arc-shaped protrusions is embedded in the corresponding limiting groove, and the lid of the box is opened.
2. The hinge structure according to claim 1, wherein There is one arc-shaped protrusion on the rotating shaft, and two or more limiting grooves are arranged at intervals and in parallel on the inner surface of the card slot.
3. The hinge structure according to claim 1, characterized in that, There is one limiting groove on the inner surface of the card slot, and two or more arc-shaped protrusions are arranged at intervals and in parallel on the circumferential side surface of the rotating shaft.
4. The hinge structure according to claim 1, characterized in that, Two or more arc-shaped protrusions are arranged at intervals and in parallel on the circumferential side surface of the rotating shaft, and two or more limiting grooves are arranged at intervals and in parallel on the inner surface of the card slot.
5. The hinge structure according to any one of claims 2-4, characterized in that, The first connecting plate further includes a partition plate received in the rotation avoidance space and fixedly connected to the rotating shaft and the first plate body respectively. The partition plate divides the rotation avoidance space into a first rotation insertion area and a second rotation insertion area; A avoidance notch is formed on one side of the card slot corresponding to the partition plate, penetrating the side wall of the card slot and communicating with the inner cavity of the card slot. The avoidance notch divides one side wall of the card slot into a first insertion part and a second insertion part which are arranged at intervals and respectively inserted into the first rotation insertion area and the second rotation insertion area; A limiting abutting part is formed on the other side wall of the card slot corresponding to the avoidance notch.
6. The hinge structure according to claim 5, characterized in that, An arc-shaped strengthening part is provided at the connecting part of the lug and the rotating shaft.
7. The hinge structure according to claim 1, wherein The first plate body is fixedly connected to the body or the lid of the box by screws, and the second plate body is fixedly connected to the body or the lid of the box by screws.
8. The hinge structure according to claim 1, characterized in that At least one first elastic positioning post for embedding into the card hole on the body or the lid of the box is provided at the part of the first plate body cooperating with the body or the lid of the box; At least one second elastic positioning post for embedding into the card hole on the body or the lid of the box is provided at the part of the second plate body cooperating with the body or the lid of the box.
9. The hinge structure according to claim 8, wherein A first through hole is formed in the first plate body. The first elastic positioning post includes a first elastic sheet and a first limiting post. One end of the first elastic sheet is fixedly connected to the inner surface of the first through hole, and the first limiting post is fixedly connected to the other end of the first elastic sheet and extends in a direction away from the inner cavity of the first through hole. A second through hole is formed in the second plate body. The second elastic positioning post includes a second elastic sheet and a second limiting post. One end of the second elastic sheet is fixedly connected to the inner surface of the second through hole, and the second limiting post is fixedly connected to the other end of the second elastic sheet and extends in a direction away from the inner cavity of the second through hole.
10. A packaging box, characterized in that, It includes the hinge structure according to any one of claims 1-9, and further includes a box body and a box cover hinge-connected through the hinge structure.