Box door connecting piece

Abstract

A box door connecting piece comprises a connecting base and a hinge base, the connecting base is fixedly installed on a box body, the hinge base is fixedly installed on a box door, the hinge base and the connecting base are hinged through a hinge assembly so as to achieve opening and closing of the box door, and a guide mechanism is further arranged between the hinge base and the connecting base. The guide mechanism comprises a guide rod, one end of the guide rod is movably connected with a guide wheel arranged in the connecting base, the other end of the guide rod extends into the hinge base and is hinged to a pull rod, and the guide wheel slides along the guide rod to limit the opening path of the box door. A limiting hook is arranged at the end of the guide rod, and the guide wheel and the limiting hook are buckled in a matched mode so as to limit hinging of the opening angle of the box door. The beneficial effects of the utility model are that the guide mechanism is arranged to limit the opening path and the opening angle of the box door, so that the use safety of the box door is improved, the box door is prevented from being damaged, and the service life of the box door is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to a door hinge, specifically a box door connecting piece. BACKGROUND

[0002] As an important connecting piece between the box body and the box door, it is mainly used for realizing the opening and closing of the box door through the hinge structure. The traditional box door hinge structure includes a fixed seat fixed on the box body and a hinge seat connected with the box door, and the two are connected through a hinge rod or a hinge piece. The box door swings around the hinge rod or the hinge piece, thereby achieving the purpose of opening and closing the box door.

[0003] In the conventional technology, the hinge rod only has the basic opening and closing operation, and lacks control over the opening path or opening angle of the box door, which may cause the box door to be excessively opened due to external force during opening, thereby causing impact on the box body or other nearby objects, resulting in damage and certain safety hazards. Secondly, the existing hinge structure does not have the function of automatic closing, and the user needs to manually close the box door. In the case of frequent use or holding objects with both hands, the operation is extremely inconvenient, and the use experience is poor. SUMMARY

[0004] The utility model aims at overcoming the shortcomings of the prior art, and provides a box door connecting piece which has the advantages of simple structure, low manufacturing cost, limitation of opening path and opening angle, protection of the box door, high safety, prolongation of service life, automatic door closing for improving operation convenience, and stable and reliable structure.

[0005] The utility model aims at overcoming the shortcomings of the prior art, and provides a box door connecting piece which has the advantages of simple structure, low manufacturing cost, limitation of opening path and opening angle, protection of the box door, high safety, prolongation of service life, automatic door closing for improving operation convenience, and stable and reliable structure.

[0006] The said pull rod is sleeved with a spring, the said pull rod is slidingly installed in the said hinge seat, the said spring drives the said guide rod to reset through the said pull rod, thereby providing power for automatic closing of the box door.

[0007] The end of the limit hook is upwardly curved, and the limit hook and the guide rod body are connected through a circular arc.

[0008] One end of the pull rod is provided with a sliding groove penetrating through the body of the pull rod, a sliding rod is connected in the sliding groove and slides along the sliding groove; the pull rod is hinged to the hinge seat through the sliding rod.

[0009] The other end of the pull rod is connected with a hinge shaft, and the inner end of the guide rod is hinged to the pull rod through the hinge shaft.

[0010] The end face of the pull rod is protruded to form a spring column, one end of the spring is abutted on the sliding rod, the other end of the spring is abutted on the spring column, the spring generates a pushing force to push the guide rod to swing upward to reset and push the box door to be always in a closed state.

[0011] The hinge assembly comprises a hinge piece, the hinge piece is provided with a buckle groove at the bottom of one end, and the connecting seat is buckled in the buckle groove; the other end of the hinge piece is hinged to the hinge seat.

[0012] The utility model discloses the beneficial effect is: 1, simple structure, low production cost, improve market competitiveness. 2, set up the guiding mechanism and limit the opening path and opening angle of box door, improve the use safety of box door, avoid suffering damage, prolong its life. 3, set up the spring and carry out automatic closing operation to box door, promote the operation convenience, ensure the closed state of box door, and the safety is high, and reliable and stable. 4, the guiding mechanism and spring cooperate with each other, and the stress concentration of hinge is dispersed, and the durability and service life of box door connecting piece are improved. 5, the cooperation sliding of guide wheel and guide rod is good, and the mute effect is good, adapts to the use of different box doors, reduces the loss in use, enhances the reliability, ensures that the box door works stably for a long time. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the structure state diagram when the box door is closed in the utility model.

[0014] Figure 2 It is the structure assembly drawing of connecting seat and hinge seat in the utility model.

[0015] Figure 3 It is the internal structure schematic view of hinge seat in the utility model.

[0016] Figure 4 It is the structure assembly drawing of guide rod and pull rod in the utility model.

[0017] Figure 5 It is the structure assembly drawing of hinge assembly and hinge seat in the utility model. DETAILED DESCRIPTION

[0018] The utility model discloses a box door connecting piece, including connecting seat 1 and hinged seat 2, connecting seat 1 fixed mounting is on the box body, hinged seat 2 fixed mounting is on the box door, hinged seat 2 with connecting seat 1 is hinged through the hinge assembly, to realize the opening and closing of box door, still be provided with guiding mechanism between hinged seat 2 with connecting seat 1, the guiding mechanism includes guide rod 4, one end of guide rod 4 with the guide wheel 5 of built-in connecting seat 1 swing connection, the other end of guide rod 4 extends into hinged seat 2 and is hinged with pull rod 6, the guide wheel 5 along guide rod 4 slides to restrict the opening path of box door, the end of guide rod 4 is provided with limit hook 41, the guide wheel 5 is hung with the limit hook 41 cooperation, to restrict the opening angle of box door;

[0019] The pull rod 6 is sleeved with the spring 7, and the pull rod 6 is slidably installed in the hinged seat 2, and the spring 7 drives the guide rod 4 to reset through the pull rod 6, thereby providing power for automatic closing of the box door.

[0020] The end of the limit hook 41 is upwardly curved, and the limit hook and the guide rod 4 body are connected through a circular arc.

[0021] One end of the pull rod 6 is provided with a sliding groove 61 penetrating the body of the pull rod 6, a sliding rod 8 is connected in the sliding groove 61, and the sliding rod 8 slides along the sliding groove 61; the pull rod 6 is hinged to the hinged seat 2 through the sliding rod 8.

[0022] The other end of the pull rod 6 is connected with a hinge shaft 9, and the inner end of the guide rod 4 is hinged to the pull rod 6 through the hinge shaft 9.

[0023] The end surface of the pull rod 6 is protruded to form a spring column 62, one end of the spring 7 is abutted on the sliding rod 8, the other end is abutted and connected to the spring column 62, the spring 7 generates a thrust force, pushes the guide rod 4 to swing upward and reset, and pushes the box door to always be in a closed state.

[0024] The hinge assembly comprises a hinge plate 3, and the hinge plate 3 is provided with a buckle groove 31 at one end of the bottom, and the connecting seat 1 is buckled in the buckle groove 31; the other end of the hinge plate 3 is hinged to the hinged seat 2.

[0025] Working principle: in the closed state of the box door, the connecting seat is fixedly installed on the box body, the hinged seat is fixedly installed on the box door, the hinged seat and the connecting seat are hinged through the hinge assembly, and the box door swings around the hinge assembly to realize the opening and closing purposes.

[0026] Wherein, between the hinge seat and the connecting seat, a guide mechanism is further arranged, one end of the guide rod of the guide mechanism is in pressure connection with the guide wheel built-in installed in the connecting seat, and the other end extends into the hinge seat and is hinged with the pull rod built-in hinged therein. At this time, the spring sheathed and installed on the pull rod is in a natural state or a compressed state, the pulling force generated by the spring is transmitted through the pull rod to drive the guide rod, so that the guide rod always maintains a reset state, ensuring the locking of the box door at this time, avoiding its opening due to external force, and high safety.

[0027] In the process of opening the box door, the box door rotates around the hinge point of the hinge piece, and the hinge seat swings relative to the hinge seat. At this time, the guide rod moves following the swing of the hinge seat, and the guide wheel slides along the guide rod to guide and limit the opening path of the box door, avoiding random opening and swinging, and improving the stability and safety of the box door during opening.

[0028] When the box door is opened to a certain angle, the limiting hook and buckle of the guide wheel and the guide rod are connected, which limits the continuous sliding of the guide wheel, thereby preventing the box door from being further opened, limiting the opening angle of the box door, and accurately controlling the maximum opening angle of the box door to avoid damage to the box door or other objects caused by excessive opening. The limit hook and the guide rod are connected through a circular arc transition, which not only enhances the strength of the hook connection, but also increases the wear resistance of the limit hook, prolonging its service life.

[0029] Further, in the process of opening the box door, the guide rod pulls the pull rod, and the sheathed spring is subjected to a pulling force to generate a spring force. The spring force is stored and provides a door closing power for subsequent door closing operation, avoiding the inconvenience caused by traditional manual door closing. The box door can be automatically closed, improving the operation convenience of the box door, and being suitable for frequent use or holding objects.

[0030] Further, the end of the pull rod is inserted with a sliding rod, which can slide along the sliding groove of the pull rod. The sliding rod and the sliding groove cooperate to slide, not only limiting the movement stroke of the pull rod, but also guiding the movement trajectory of the pull rod, improving the accurate movement of the guide rod and the pull rod, and ensuring the long-term stable opening and closing function of the box door, so it can be widely promoted.

[0031] The above shows and describes the basic principles and main features of the present application and the advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application.

Claims

1. A box door connecting piece, comprising a connecting seat (1) and a hinged seat (2), the connecting seat (1) is fixedly installed on a box body, the hinged seat (2) is fixedly installed on a box door, the hinged seat (2) is hinged with the connecting seat (1) through a hinge assembly to realize the opening and closing of the box door, characterized in that: The hinge seat (2) and the connecting seat (1) are further provided with a guide mechanism, the guide mechanism comprises a guide rod (4), one end of the guide rod (4) is movably connected with a guide wheel (5) built in the connecting seat (1), the other end of the guide rod (4) extends into the hinge seat (2) and is hingedly connected with a pull rod (6), the guide wheel (5) slides along the guide rod (4) to limit the opening path of the box door; the end of the guide rod (4) is provided with a limiting hook (41), the limiting hook (41) cooperates with the guide wheel (5) to limit the opening angle of the box door. The pull rod (6) is sleeved with a spring (7), the pull rod (6) is slidably installed in the hinge seat (2), the spring (7) drives the guide rod (4) to reset through the pull rod (6), thereby providing the power for the automatic closing of the box door.

2. A box door connector according to claim 1, characterized in that: The end of the limiting hook (41) is upwardly arranged, and the limiting hook (41) and the guide rod (4) are connected through a circular arc transition.

3. A box door connector according to claim 1, wherein: One end of the pull rod (6) is provided with a sliding groove (61) penetrating the body of the pull rod (6), a sliding rod (8) is connected in the sliding groove (61), and the sliding rod (8) slides along the sliding groove (61); the pull rod (6) is hingedly connected to the hinge seat (2) through the sliding rod (8).

4. A box door connector according to claim 1, wherein: The other end of the pull rod (6) is connected with a hinge shaft (9), and the inner end of the guide rod (4) is hingedly connected with the pull rod (6) through the hinge shaft (9).

5. A bin door connector according to claim 3, wherein: The end surface of the pull rod (6) is protruded to form a spring column (62), one end of the spring (7) is abutted on the sliding rod (8), and the other end is abutted on the spring column (62), the spring (7) generates a thrust force, the guide rod (4) is pushed to reset, and the box door is always in a closed state.

6. A box door connector according to claim 1, wherein: The hinge assembly comprises a hinge plate (3), one end of the hinge plate (3) is provided with a buckle groove (31) with an open bottom, and the connecting seat (1) is buckled in the buckle groove (31); the other end of the hinge plate (3) is hingedly connected with the hinge seat (2).

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