Hidden door opening hinge and box

Abstract

The utility model discloses a hidden door opening hinge. Comprising a base mounted on a fixed structure, a fixed seat which is mounted on a movable door structure and corresponds to the base, a pull rod which is hinged between the base and the fixed seat through two groups of damping rotating shafts, and a connecting rod which is hinged between the base and the fixed seat and forms a triangular structure with the pull rod. The hidden door opening hinge is convenient to install inside, and can be suitable for various box bodies with thicker walls; and due to the multi-connecting-rod structure and multiple turning points, hovering at any position within the range of 0-90 degrees is achieved. The utility model further provides a box which comprises a box body, a box cover and the door opening hinge for connecting the box body and the box cover. According to the box disclosed by the utility model, the hidden door opening hinges are integrally hidden inside, the appearance integrity is good, gaps among the hidden door opening hinges are relatively small, and the attractiveness is relatively high.

Description

Technical Field

[0001] The utility model relates to the technical field of daily necessities, in particular to a concealed door-opening hinge and a box. Background Art

[0002] The connection modes between the box body and the box cover of the existing boxes usually include zipper connection and hinge connection. For the box with zipper connection, one side of the box body and the box cover is sewn and connected together. When used for a long time or used violently, the connection part and the zipper will be damaged, and it is difficult to repair after damage, resulting in great waste. For the box with hinge connection, the box body and the box cover are of a split design and are only connected for opening and closing through the hinge, and the connection is more firm and reliable. When the hinge is damaged, it is easy to repair.

[0003] At present, there are mainly two types of hinge structures for boxes on the market: one is a common hinge. The two sides of this hinge are exposed outside and are respectively fixed on the outer sides of the box body and the box cover, which greatly affects the appearance and cannot increase the damping to achieve the hovering effect. The other is a rotating shaft type hinge. The fixing points are all on the inner sides of the box body and the box cover, but the rotating shaft still needs to be exposed outside, which affects the appearance effect. Moreover, a single rotating shaft cannot achieve a large damping. To increase the damping, it is necessary to increase the outer diameter of the rotating shaft, which has a greater impact on the appearance. Summary of the Invention

[0004] The utility model solves the above problems through the following technical means:

[0005] The utility model provides a concealed door-opening hinge, which comprises a base installed on a fixed structure, a fixed seat installed on a movable door structure and corresponding to the base, a pull rod hinged between the base and the fixed seat through two groups of damping rotating shafts, and a connecting rod hinged between the base and the fixed seat and forming a triangular structure with the pull rod.

[0006] Preferably, the base is a "U" - shaped structure integrally bent from a steel plate, and two vertical plates thereof extend obliquely outward and away from the web in the plane of the vertical plates to form a rotating connection part, and the web is used for installing and fixing with the fixed structure.

[0007] Preferably, the fixed seat is a boss - shaped structure integrally bent from a steel plate, and when installed, the protruding part of the fixed seat is clamped into the movable door structure, and two bottom plates at both ends thereof are used for installing and fixing with the movable door structure.

[0008] Preferably, the pull rod is a rod - shaped structure with a "U" - shaped cross - section integrally bent from a steel plate.

[0009] Preferably, one end of the pull rod is hinged to the ends of the two side plates of the base through the two damping rotating shafts at the turning point d, and the other end of the pull rod is hinged to the two side plates of the fixed seat through the two damping rotating shafts at the turning point c of the two side plates of the fixed seat.

[0010] Preferably, the hinge turning point a of the connecting rod and the base is arranged at the middle position of the base, that is, the turning point a is located obliquely below the turning point d, and the hinge turning point b of the connecting rod and the fixed seat is arranged inside the turning point c.

[0011] The present invention also provides a box, including a box body, a box cover, and an opening hinge as described in the foregoing technical solution for connecting the box body and the box cover.

[0012] Preferably, the box body and the box cover are of a split structure, and the base of the opening hinge is installed inside the box body, and the fixed seat is correspondingly installed inside the box cover.

[0013] Preferably, there are two or more opening hinges, and a plurality of the opening hinges are connected to the same side of the box body and the box cover.

[0014] As can be seen from the above technical solutions, the present invention has the following beneficial effects:

[0015] The hidden opening hinge of the present invention uses the pull rod and the connecting rod that form a triangular structure and are hinged between the base and the fixed seat as an intermediate transition together, increasing the installation space of the hinge, so as to be convenient for installation inside, and can also be applicable to various boxes with relatively thick wall thicknesses; and its structure is simple, with high stability, a multi-link structure, and many turning points. After connecting the pull rod through two groups of damping rotating shafts, it realizes hovering at any position within the range of 0-90°.

[0016] For the box of the present invention, the hidden opening hinge is entirely hidden inside, with good overall appearance. The box body and the box cover do not interfere during the opening and closing process, and the gap between them is relatively small, with high aesthetics. The box cover can achieve the effect of hovering at any position within the range of 0-90° during the opening process, providing an excellent user experience. Description of the Drawings

[0017] Figure 1 is a schematic structural diagram of the hidden opening hinge of the present invention;

[0018] Figure 2 is an assembly schematic diagram of the hidden opening hinge of the present invention;

[0019] Figure 3 is Figure 2 an enlarged view of part A in

[0020] Figure 4 Schematic diagram of the structure when the lid of the box of the present utility model is opened;

[0021] Figure 5 is Figure 4 The enlarged view of part B in

[0022] Such as Figures 1-5 , fixed structure - 1, movable door structure - 2, door opening hinge - 3, base - 31, fixed seat - 32, damping rotating shaft - 33, pull rod - 34, connecting rod - 35, box body - 4, box lid - 5. Specific embodiments

[0023] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0024] The terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "plurality" is two or more.

[0025] Embodiment 1

[0026] Such as Figures 1-3 shown: The concealed door opening hinge described in this embodiment includes a base 31 installed on the fixed structure 1, a fixed seat 32 installed on the movable door structure 2 corresponding to the base 31, a pull rod 34 hinged between the base 31 and the fixed seat 32 through two groups of damping rotating shafts 33, and a connecting rod 35 hinged between the base 31 and the fixed seat 32 and forming a triangular structure with the pull rod 34. Through the common action of the pull rod 34 and the connecting rod 35 forming a triangular structure and hinged between the base 31 and the fixed seat 32, the installation space of the hinge is increased, so that it is convenient to install inside and realize its concealment function. It can also be applied to various box bodies 4 with relatively thick wall thickness, and has a wider application range; and its structure is simple, with high stability, a multi-link structure, and multiple rotation points. After connecting the pull rod 34 through two groups of damping rotating shafts 33, it can hover at any position within the range of 0 - 90°.

[0027] Specifically, the base 31 is a "U"-shaped structure formed by integrally bending a steel plate. The two vertical plates thereof extend obliquely outward and away from the web in the plane of the vertical plates to form a rotating connection portion. During installation, the hinge turning point d of the tie rod 34 and the base 31 just protrudes out of the fixed structure 1. Its web is used for installing and fixing with the fixed structure 1. The fixed seat 32 is a boss-shaped structure formed by integrally bending a steel plate. During installation, the protruding part of the fixed seat 32 is clamped into the movable door structure 2, and then the two bottom plates at both ends thereof are used for installing and fixing with the movable door structure 2. The protruding part of the base 31 provides a rotating space for one end of the tie rod 34 and the connecting rod 35. The internal empty groove of the protruding part of the fixed seat 32 provides a rotating space for the other end of the tie rod 34 and the connecting rod 35, making the overall rotation flexible and the rotation range meet the requirements.

[0028] Specifically, the hinge turning point a of the connecting rod 35 and the base 31 is arranged at the middle position of the base 31, that is, the turning point a is located diagonally below the turning point d. When the above-mentioned door hinge is closed, the hinge turning point b of the connecting rod 35 and the fixed seat 32 is in the position closely adjacent to the inner lower side of the turning point c. In this way, during the rotation process, the connecting rod 35 and the tie rod 34 are always in an independent state and will not collide with each other and affect each other.

[0029] More specifically, compensation distances in the width direction are provided at the turning points a and d of the base 31, thereby increasing the distance between the hinge hole and the edge of the base 31, improving the installation strength and extending the service life.

[0030] More specifically, the tie rod 34 is a rod-shaped structure with a "U"-shaped cross-section formed by integrally bending a steel plate. The two side plates at one end of the tie rod 34 are respectively hinged to the ends of the two side plates of the base 31 at the turning point d through two damping rotating shafts 33. The two side plates at the other end of the tie rod 34 are respectively hinged to the turning points c of the two side plates of the fixed seat 32 through two damping rotating shafts 33.

[0031] The concealed door hinge described in this embodiment is applicable not only to various open-door containers, such as open-door boxes, open-door cabinets, etc., but also to in-swing doors.

[0032] Embodiment 2

[0033] Such as Figure 4 、 Figure 5As shown: The box described in this embodiment includes a box body 4, a box cover 5, and a door-opening hinge 3 connecting the box body 4 and the box cover 5 as described in Embodiment 1. The door-opening hinge 3 is entirely hidden inside, with good overall appearance. The box body 4 and the box cover 5 do not interfere with each other during the opening and closing process, and the gap between them is small, with high aesthetic property. The box cover 5 can achieve the effect of hovering at any position within the range of 0 - 90° during the opening process, providing an excellent user experience.

[0034] Specifically, the box body 4 and the box cover 5 are of a split structure, and the base 31 of the door-opening hinge 3 is installed inside the box body 4, and the fixed seat 32 is correspondingly installed inside the box cover 5. Further specifically, there are two or more door-opening hinges 3, preferably two, and multiple door-opening hinges 3 are connected to the same side of the box body 4 and the box cover 5.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A concealed door hinge, characterized in that: It includes a base installed on a fixed structure, a fixed seat installed on a movable door structure and corresponding to the base, a pull rod hinged between the base and the fixed seat through two sets of damping rotating shafts, and a connecting rod hinged between the base and the fixed seat and forming a triangular structure with the pull rod.

2. The concealed door opening hinge according to claim 1, wherein: The base is a "U"-shaped structure integrally bent from a steel plate, and two vertical plates thereof extend obliquely outward and away from the web in the plane of the vertical plate to form a rotating connection part, and its web is used for installing and fixing with the fixed structure.

3. The concealed door hinge according to claim 2, characterized in that: The fixed seat is a boss-shaped structure integrally bent from a steel plate, and when installed, the protruding part of the fixed seat is clamped into the movable door structure, and two bottom plates at its two ends are used for installing and fixing with the movable door structure.

4. The concealed door opening hinge according to claim 3, wherein: The pull rod is a rod-shaped structure with a "U"-shaped cross-section integrally bent from a steel plate.

5. A concealed door hinge according to claim 4, characterized in that: Two side plates at one end of the pull rod are respectively hinged to the ends of two side plates of the base at the rotation point d through the two damping rotating shafts, and two side plates at the other end of the pull rod are respectively hinged to the two side plates of the fixed seat at the rotation point c through the two damping rotating shafts.

6. The concealed door opening hinge according to claim 5, wherein: The hinge point a of the connecting rod and the base is arranged at the middle position of the base, that is, the hinge point a is located obliquely below the hinge point d, and the hinge point b of the connecting rod and the fixed seat is arranged inside the hinge point c.

7. A box, characterized in that: It includes a box body, a box cover, and a hidden door opening hinge as described in any one of claims 1-6 connecting the box body and the box cover.

8. A box according to claim 7, characterized in that: The box body and the box cover are of a split structure, and the base of the hidden door opening hinge is installed inside the box body, and the fixed seat is correspondingly installed inside the box cover.

9. A box according to claim 8, characterized in that: There are two or more door opening hinges, and a plurality of the door opening hinges are connected to the same side of the box body and the box cover.

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