Folding box hinge structure and folding box

Abstract

The utility model discloses a folding box hinge structure and a folding box. The folding box hinge structure comprises an outer hinge, a hinge shaft and an inner hinge, a mounting hole is formed in the outer hinge; a shaft sleeve is matched in the mounting hole; the hinge shaft is provided with a connecting part and a pivoting part, the connecting part is matched in the shaft sleeve, and the pivoting part is located on one side of the shaft sleeve; the inner hinge is provided with a rotating end and a hinged end opposite to the rotating end, the hinged end is provided with a shaft hole penetrating through the hinged end, the shaft hole is in clearance fit with the pivot joint portion, the inner circumferential wall of the shaft hole is provided with an oil groove in an outward concave mode, the oil groove extends in the circumferential direction of the shaft hole, and the outer wall of the hinged end is further provided with an oil inlet inwards, and the oil inlet is communicated with the oil groove. Due to the fact that the oil groove is formed in the inner circumferential wall of the shaft hole, grease can be stored in the oil groove and prevented from overflowing, the grease can be kept on the inner hinge permanently, sufficient grease is guaranteed to fully lubricate the inner hinge and the hinged shaft, and the long-term good lubricating effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of folding boxes, in particular to a folding box hinge structure and a folding box. Background Art

[0002] The existing hinge structure of a folding box includes an outer hinge, an articulated shaft, and an inner hinge articulated with the outer hinge. The outer hinge has an axial hole, a shaft sleeve is fitted in the shaft hole, an oil nozzle is arranged on the shaft sleeve, the articulated shaft and the shaft sleeve are clearance-matched and an oil passage connected to the oil nozzle is provided, and a through hole is provided at one end of the inner hinge, the through hole is clearance-matched with the articulated shaft, and when lubricating grease is injected into the oil nozzle, the grease flows from the oil nozzle through the oil passage into the through hole to lubricate the articulated shaft and the inner hinge. However, the above structure is prone to grease overflow, resulting in poor lubrication effect. Utility Model Content

[0003] In view of the deficiencies of the prior art, the purpose of the utility model is to provide a folding box hinge structure and a folding box which prevent grease from overflowing and ensure good lubrication effect by arranging an oil groove on the inner peripheral wall of the shaft hole.

[0004] To achieve the above purpose, the embodiment of the utility model adopts the following technical solutions:

[0005] A folding box hinge structure, comprising an outer hinge, a hinge shaft and an inner hinge;

[0006] The outer hinge is provided with a mounting hole, and a shaft sleeve is fitted in the mounting hole;

[0007] The hinge shaft has a connecting portion and a pivoting portion, the connecting portion is fitted in the shaft sleeve, and the pivoting portion is located on one side of the shaft sleeve;

[0008] The inner hinge has a rotating end and a hinged end arranged opposite to the rotating end. The hinged end is provided with an axial hole passing through it. The axial hole and the pivotal portion are clearance-matched. The inner circumferential wall of the axial hole is provided with an oil groove recessed outwardly. The oil groove extends along the circumference of the axial hole. The outer wall of the hinged end is also provided with an oil inlet inwardly, and the oil inlet is connected to the oil groove.

[0009] Furthermore, the shaft hole is rotatably matched with the pivotal portion, and the oil groove is annular.

[0010] Further, the oil groove surrounds the circumference of the shaft hole and extends along the axial direction of the shaft hole to form a spiral shape.

[0011] Furthermore, one end of the connecting portion extends out of the outer side wall of the external hinge and its end face is recessed along the radial direction of the hinge shaft to form a slot, a limiting plate is provided in the slot, the limiting plate extends out of the slot and is fixedly connected to the external hinge, so that the hinge shaft is fixed on the external hinge.

[0012] Furthermore, the slot passes through the connection portion in the radial direction of the hinge shaft, and two ends of the limit plate extend out of the slot from two ends of the slot respectively and are fixedly connected to the outer side wall of the external hinge.

[0013] Furthermore, the outer peripheral wall of the pivotal portion is inwardly recessed to form an annular oil passage, and the oil passage corresponds to the oil groove.

[0014] Furthermore, the outer hinge has two seat plates arranged opposite to each other in the width direction of the folding box, and the two seat plates are respectively provided with a mounting hole passing through them along the width direction of the folding box, and the two mounting holes correspond to each other, and a shaft sleeve is fixed in each mounting hole, and the two ends of the hinge shaft respectively form a connecting part that is clearance-matched with the shaft sleeve, the pivot part is located between the two connecting parts, and the inner hinge is located between the two seat plates.

[0015] Furthermore, each of the sleeves has a free end and a mounting end relative to the free end away from the inner hinge, the mounting end fits into the mounting hole and its end surface does not extend beyond the outer wall of the seat plate away from the inner hinge, and the oil inlet is provided with an oil nozzle connected thereto.

[0016] The folding box hinge structure of the utility model has an oil groove concavely arranged outwardly on the inner peripheral wall of the shaft hole, so that grease can be stored in the oil groove to prevent grease from overflowing, so that the grease can be permanently retained on the inner hinge, thereby ensuring that there is enough grease to fully lubricate the inner hinge and the hinge shaft, achieving a long-term good lubrication effect. The folding box hinge structure of the utility model is simple and easy to install.

[0017] An embodiment of the utility model further provides a folding box, comprising the folding box hinge structure described in any one of the above embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a side view of the hinge structure of the folding box according to the embodiment of the utility model;

[0019] Figure 2 for Figure 1 A cross-sectional view of

[0020] Figure 3 for Figure 2 A magnified view of the local area A;

[0021] Figure 4 for Figure 3 Another embodiment of the enlarged view. DETAILED DESCRIPTION

[0022] Below, in conjunction with the accompanying drawings and specific implementation methods, the utility model is further described:

[0023] like Figures 1 to 4 As shown, an embodiment of the utility model provides a folding box hinge structure, including an outer hinge 1, a hinge shaft 2 and an inner hinge 3, wherein the inner hinge 3 is rotatably connected to the outer hinge 1 via the hinge shaft 2.

[0024] like Figures 1 to 3 As shown, the outer hinge 1 is provided with a mounting hole 11, and a shaft sleeve 12 is matched in the mounting hole 11. Specifically, the outer hinge 1 has two seat plates 10 arranged opposite to each other in the width direction of the folding box 100, and a receiving space is formed between the two seat plates 10. The two seat plates 10 are respectively provided with a mounting hole 11 penetrating therethrough along the width direction of the folding box 100. The two mounting holes 11 correspond to each other and are coaxial, and a shaft sleeve 12 is fixed in each mounting hole 11. Specifically, each shaft sleeve 12 has a free end 121 and a mounting end 122 away from the inner hinge 3 relative to the free end 121. The free end 121 is located in the receiving space, and the mounting end 122 is matched in the mounting hole 11 and its end surface does not exceed the outer side wall of the seat plate 10 away from the inner hinge 3, so as to form a clearance space.

[0025] like Figures 1 to 3 As shown, the hinge shaft 2 has a connecting portion 21 and a pivoting portion 22, the connecting portion 21 is fitted in the shaft sleeve 12, and the pivoting portion 22 is located on one side of the shaft sleeve 12; specifically, the two ends of the hinge shaft 2 respectively form a connecting portion 21 that is clearance-fitted with the shaft sleeve 12, and the pivoting portion 22 is located between the two connecting portions 21. One end of the connecting portion 21 extends out of the outer wall of the outer hinge 1, and its end surface is recessed along the radial direction of the hinge shaft 2 to form a slot 211, and a limiting plate 212 is provided in the slot 211, and the limiting plate 212 extends out of the slot 211 and is fixedly connected to the outer hinge 1, so that the hinge shaft 2 is fixed to the outer hinge 1. In this embodiment, the slot 211 passes through the connecting portion 21 along the radial direction of the hinge shaft 2, and the two ends of the limiting plate 212 extend from the two ends of the slot 211 to the outside of the slot 211 and are fixedly connected to the outer wall of the outer hinge 1 by screws.

[0026] like Figures 1 to 3As shown, the inner hinge 3 is located between the two seat plates 10 and has a rotating end 31 and a hinge end 32 arranged opposite to the rotating end 31. The hinge end 32 extends into the accommodating space and is provided with an axial hole 321 running through it. The axial hole 321 is clearance-matched with the pivot portion 22. Specifically, the axial hole 321 is rotationally matched with the pivot portion 22. The inner circumferential wall of the axial hole 321 is recessed with an oil groove 3211 outwardly, and the oil groove 3211 extends along the circumference of the axial hole 321. In the present embodiment, the oil groove 3211 is annular. Of course, in other embodiments, the oil groove 3211 may be spiral. Specifically, the oil groove 3211 surrounds the circumference of the axial hole 321 and extends along the axial direction of the axial hole 321 to make it spiral, which can further improve the lubrication effect. The outer wall of the hinge end 32 is also provided with an oil inlet 322 inwardly, and the oil inlet 322 is connected with the oil groove 3211. The oil inlet 322 is provided with an oil nozzle connected thereto. When lubricating grease is injected from the oil nozzle, the grease flows from the oil inlet 322 into the shaft hole 321 to lubricate the inner hinge 3 and the hinge shaft 2. At the same time, the grease is stored in the oil groove 3211. By providing the oil groove 3211 on the inner peripheral arm of the shaft hole 321, the grease can be stored in the oil groove 3211 to prevent the grease from overflowing, so that the grease can be permanently retained on the inner hinge 3, thereby ensuring that there is enough grease to fully lubricate the inner hinge 3 and the hinge shaft 2, achieving a long-term good lubrication effect, and making the hinge structure of the folding box simple, easy to install and process.

[0027] like Figure 4 As shown, in order to further improve the lubrication effect, an annular oil passage 221 is recessed inwardly on the outer peripheral wall of the pivot portion 22. The oil passage 221 corresponds to the oil groove 3211. The oil passage 221 can store grease, further ensuring that the inner hinge 3 and the articulated shaft 2 have sufficient lubricating grease. Even after a long period of use, a good lubrication effect is maintained, thereby extending the service life of the inner hinge 3 and the articulated shaft 2.

[0028] The folding box hinge structure of the utility model has an oil groove concavely arranged outwardly on the inner peripheral wall of the shaft hole, so that grease can be stored in the oil groove to prevent grease from overflowing, so that the grease can be permanently retained on the inner hinge, thereby ensuring that there is enough grease to fully lubricate the inner hinge and the hinge shaft, achieving a long-term good lubrication effect. The folding box hinge structure of the utility model is simple and easy to install.

[0029] An embodiment of the utility model further provides a folding box, comprising the folding box hinge structure described in any one of the above embodiments.

[0030] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein, and these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. Folding box hinge structure, characterized in that: Including outer hinge, hinge shaft and inner hinge; The outer hinge is provided with a mounting hole, and a shaft sleeve is fitted in the mounting hole; The hinge shaft has a connecting portion and a pivoting portion, the connecting portion is fitted in the shaft sleeve, and the pivoting portion is located on one side of the shaft sleeve; The inner hinge has a rotating end and a hinged end arranged opposite to the rotating end. The hinged end is provided with an axial hole passing through it. The axial hole and the pivotal portion are clearance-matched. The inner circumferential wall of the axial hole is provided with an oil groove recessed outwardly. The oil groove extends along the circumference of the axial hole. The outer wall of the hinged end is also provided with an oil inlet inwardly, and the oil inlet is connected to the oil groove.

2. The folding box hinge structure according to claim 1, characterized in that: The shaft hole is rotatably matched with the pivotal portion, and the oil groove is annular.

3. The folding box hinge structure according to claim 1, characterized in that: The oil groove surrounds the circumference of the shaft hole and extends in the axial direction of the shaft hole to form a spiral shape.

4. The hinge structure of the folding box according to claim 1, characterized in that: One end of the connecting portion extends out of the outer side wall of the external hinge and its end face is recessed along the radial direction of the hinge shaft to form a slot, a limit plate is provided in the slot, the limit plate extends out of the slot and is fixedly connected to the external hinge, so that the hinge shaft is fixed on the external hinge.

5. The folding box hinge structure according to claim 4, characterized in that: The slot passes through the connection portion in the radial direction of the hinge shaft, and two ends of the limiting plate extend out of the slot from two ends of the slot and are fixedly connected to the outer side wall of the outer hinge.

6. The hinge structure of the folding box according to claim 1, characterized in that: The outer peripheral wall of the pivotal portion is inwardly recessed to form an annular oil passage, and the oil passage corresponds to the oil groove.

7. The folding box hinge structure according to claim 1, characterized in that: The outer hinge has two seat plates arranged opposite to each other in the width direction of the folding box, and the two seat plates are respectively provided with a mounting hole passing through them along the width direction of the folding box, and the two mounting holes correspond to each other, and a shaft sleeve is fixed in each mounting hole, and the two ends of the hinge shaft respectively form a connecting part that is clearance-matched with the shaft sleeve, the pivot part is located between the two connecting parts, and the inner hinge is located between the two seat plates.

8. The hinge structure of the folding box according to claim 7, characterized in that: Each of the sleeves has a free end and a mounting end relative to the free end away from the inner hinge. The mounting end fits into the mounting hole and its end surface does not extend beyond the outer wall of the seat plate away from the inner hinge. The oil inlet is provided with an oil nozzle connected thereto.

9. A folding box, characterized in that: The invention comprises the folding box hinge structure according to any one of claims 1 to 8.

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